@article {1876, title = { Advanced materials for energy harvesting, storage, sensing and environmental engineering }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {88}, year = {2020}, author = {M. EL-JOUAD and R. BENNACER and M. EL-GANAOUI and J.M. NUNZI} } @article {1874, title = { Building incorporated bio-based materials: Experimental and numerical study }, journal = { JOURNAL OF BUILDING ENGINEERING }, volume = {28}, year = {2020}, abstract = {

In building environments, several research on dynamic moisture storage in hygroscopic building materials has improved interest in moisture buffering capacity of bio-based materials and demonstrated the potential of these materials to improve thermal comfort and buildings energy consumption. This paper presents an investigation, which aims to compare the hygroscopic behavior of different bio-based materials to identify their hygric proprieties. For this, an experimental facility is used to measure the moisture buffer value (MBV) for different categories of building materials. Thereafter, a dynamic simulation has been carried out by using TRNSYS software in order to evaluate heating and cooling loads. The results showed that the wood-cement composite still has excellent moisture regulator when compared to wood panels or fibrous materials. It has a buffer capacity superior to 3 [g/m(2).\% RH] very close to that of wood fiber panels. The simulation results of the different cases showed that the insulation reduces significantly total energy demand, but it does not lead heat evacuation in the summer season. Thus, from this study, it can be concluded that a natural ventilation mechanism is recommended to improve energy efficiency in the building.

}, author = {F. MNASRI and S. BAHRIA and M.E.A. SLIMANI and O. LAHOUCINE and M. EL-GANAOUI} } @article {1863, title = { Magnetohydrodynamic natural convection of hybrid nanofluid in a porous enclosure: numerical analysis of the entropy generation }, journal = { JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY }, year = {2020}, abstract = {

The effect on the entropy production and MHD convection of the hybrid nanofluid Al2O3-Cu/water (water with Cu and Al2O3 nanoparticles) in a porous square enclosure is studied numerically via Galerkin finite element method. The enclosure used for flow and natural convection analysis is subjected to sinusoidal varying temperatures at the boundaries. Calculations were performed for specific parameters of the Rayleigh number (Ra = 10(3)-10(6)), porosity ratio (epsilon = 0.1-0.9), Darcy number (Da = 10(-5)-10(-2)), Hartmann number (Ha = 0-100) and nanoparticles concentration (phi = 0-0.08). The numerical results are presented by velocity profiles, isotherms, streamlines, and Nusselt number. They indicate that the isotherms subject to estimation variations under Ha boost from 0 to 100 as Ra enhances. At high Ha, the conduction transfer mechanism is more obvious. Also, it is seen that the convective heat transfer becomes stronger with the enhancement of the Ra while it detracts with the rise in Ha. Due to the Ra increase, the flow cell becomes stronger. For Ra = 10(6) and higher Hartmann numbers, the isotherms remain constant which is an indication of convection predominance.

}, author = {Z. ABDEL-NOUR and A. AISSA and F. MEBAREK-OUDINA and A.M. RASHAD and H.M. ALI and M. SAHNOUN and M. EL-GANAOUI} } @article {1873, title = { Natural durability of four Tunisian Eucalyptus spp. and their respective compositions in extractives }, journal = {HOLZFORSCHUNG}, volume = {74}, year = {2020}, pages = {260-274}, abstract = {

Eucalyptus trees have been adapted to the Tunisian climate. Now, they need to be economically valued. Tunisian Eucalyptus have great technological properties allowing us to use them as wooden material. However, there is large variability in the natural durability between heartwood Eucalyptus spp. The wood sustainability assessment provides reliable parameters to predict the service life of wood-based products. This study aimed to evaluate the wood deterioration of four North Tunisian fast-growing Eucalyptus spp. (Eucalyptus maidenii, Eucalyptus saligna, Eucalyptus camaldulensis and Eucalyptus gomphocephala) exposed to basidiomycetes (Coniophora puteana and Trametes versicolor) and termite (Reticulitermes flavipes) attacks. Among the four Eucalyptus woods, Eucalyptus gomphocephala presents the highest decay and termite resistance. The four Eucalyptus wood species are classified as very durable against fungal degradation and durable against termite attacks, expect for Eucalyptus saligna which is classified as sensible against termites. The natural durability of Eucalyptus seems to be mainly caused by extractives, and a lot of compounds are involved. Antifungal and anti-termite properties of these compounds were put in perspective with the natural durability of wood. Gas chromatography-mass spectrometry (GC-MS) analyses highlighted that Eucalyptus durability is mostly governed by gallic acid, fatty acid glycerides, fatty acid esters, phenolic compounds, sitosterol, catechin and ellagic acid.

}, author = {M.T. ELAIEB and S. BEN-AYED and S. DUMARCAY and B.D.H. DE-FARIA and M.F. THEVENON and P. GERARDIN and K. CANDELIER} } @article {1881, title = { Numerical study of the melting and resolidification of the substrate during the impact of a ceramic droplet in a plasma spraying process star }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {88}, year = {2020}, abstract = {

The substrate melting can significantly improve the properties of plasma spray coatings. Indeed the adhesion of the projected particles to the substrate can be ameliorated by the substrate melting. In this article, a numerical model is developed to study the dynamics of fluids and heat transfer with liquid/solid phase change during impact of a fully melted alumina particle on an aluminum solid substrate, taking into account of the substrate melting. The model is based on solving the Navier-Stokes and energy equations with liquid / solid phase change. These equations are coupled with the fluid of volume method (VOF), to follow the free surface of the particle during its spreading and solidification. The finite volume method is used to discretize the equations in a 2D axisymmetric domain. A comparison with the published experimental results was carried out to validate this numerical model. Simulations were performed for different initial droplet diameters to study its effect on droplet spreading as well as on substrate melting. It has been observed that the substrate melting begins before the droplet spreads completely; the substrate melting reaches its maximum when the droplet is close to its total solidification. Droplet spreading and substrate melting are more important for large sizes droplets.

}, author = {M. DRIOUCHE and T. REZOUG and M. EL-GANAOUI} } @article {1887, title = { Pressure-Driven Gas Flows in Micro Channels with a Slip Boundary: A Numerical Investigation }, journal = { FDMP-FLUID DYNAMICS \& MATERIALS PROCESSING }, volume = {16}, year = {2020}, pages = {147-159}, abstract = {

In this paper, flow of slightly rarefied compressible nitrogen in microchannels has been investigated numerically for low values of Reynolds and Mach numbers. The 2D governing equations were solved using Finite Element Method with first-order slip boundary conditions ( Comsol Multiphysics software). A validation was performed by comparing with similar configuration from the literature. It was found that our model can accurately predict the pressure driven flow in microchannels. Several interesting findings are reported about the Relative pressure, longitudinal velocity, Mach number, effect of gas rarefaction and flow rate.

}, author = {A. AISSA and M.E.A. SLIMANI and F. MEBAREK-OUDINA and R. FARES and A. ZAIM and L. KOLSI and M. SAHNOUN and M. EL-GANAOUI} } @article {1879, title = { Relationships between chemical composition and decay durability of Coula edulis Baill as an alternative wood species in Gabon }, journal = { WOOD SCIENCE AND TECHNOLOGY }, volume = {54}, year = {2020}, pages = {329-348}, abstract = {

The general objective of this work was to evaluate the quality of the little-known tropical woods of the Congo Basin, particularly Coula edulis, while looking for new biocidal products. The natural durability of the hazel tree of Gabon Coula edulis versus basidiomycete fungi was evaluated with native and extracted samples of heartwood against brown rot (Rhodonia placenta and Coniophora puteana) and white rot (Trametes versicolor and Pycnoporus sanguineus) fungi. The results showed that non-extracted samples were more durable. Fungal growth inhibition tests using different concentrations of extractives confirmed the fungicidal effects. Percentage of the different wood polymers and GC-MS analysis of wood extractives were carried out to examine correlations between durability and wood chemistry. Natural durability of Coula edulis could be explained by the unusually high lignin content and the presence of high amounts of polyphenols like gallic and ellagic acids and tannins. Coula edulis could therefore be a local alternative to help alleviate wood shortages in Gabon.

}, author = {C.S.A.B. BOPENGA and S. DUMARCAY and P.E. ENGONGA and P. GERARDIN} } @article {1883, title = { Some flow patterns within ventilation strategy coupled to energy efficiency }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {88}, year = {2020}, abstract = {

Energy and buildings are increasingly becoming subjects for investigations, especially for the indoor air quality domain coupled to energy demand. The physics of fluids flowing inside enclosures bring basic models to understand and build better schemes. This paper is devoted to studying ventilation strategies in regards to Indoor Air Quality (IAQ) and energy efficiency in floor refreshing houses. A room model is considered in a simplified level, as a cavity heated on the external sidewall and cooled on the bottom ground surface. The external air injector is at variable positions and interacting with the needed cooling power; the air quality (mixing ability) and thermal comfort are also studied. The cooling efficiency inside the considered volume and the average air temperature are analyzed for a given temperature difference characterizing the natural convection level (Rayleigh number, Ra = 10(6)) and a horizontal ventilation (moderate Reynolds number Re = 10(2)). An obtained complex flow structure indicates that the natural convection and the forced flow (ventilation) act directly on the resulting patterns, mixing ability, heat exchange which in a straight line affect the thermal comfort and in fine the energy cost (cooling requirement).

}, author = {S. MORSLI and R. BENNACER and M. EL-GANAOUI and H. RAMENAH and A. CARMASOL} } @article {1844, title = { Toward the cottonization of hemp fibers by steam explosion. Flame-retardant fibers }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {151}, year = {2020}, abstract = {

The goal is to produce cottonized hemp fibers with improved thermal stability. It was first found that the fine hemp fibers produced from technical non-retted hemp fibers by steam explosion exhibited an enhanced thermal stability. An efficient and low-cost process was developed using a mixture of urea/etidronic acid in aqueous solution in order to achieve a high phosphorus content and produce flame retardant fibers by chemical grafting. ICP, P-31 and C-13 NMR, SEM, thermogravimetric, Pyrolysis-Combustion Flow Calorimetry analyses and a flame test were used to characterize the grafted fibers. Fibers modified with relatively high P and N contents have been produced (approximate to 6 wt \% and approximate to 4 wt \% respectively) but lower grafting rates (P approximate to 0.5 \% and N approximate to 0.35 \%) are sufficient to produce non-flammable fibers. A synergistic effect between N and P has been proposed to induce the formation of a stable char.

}, url = {https://hal.univ-lorraine.fr/LERMAB-UL/hal-02676818}, author = {M. MOUSSA and R. EL-HAGE and R. SONNIER and L. CHRUSCIEL and I. ZIEGLER-DEVIN and N. BROSSE} } @article {1794, title = { Assessment of hygrothermal behavior of newly straw-rape concrete material in various conditions }, journal = { HEAT AND MASS TRANSFER }, volume = {55}, year = {2019}, pages = {2785-2796}, abstract = {

This article focuses on study of hygrothermal behavior of building made of new bio-concrete based on straw-rape. The assessment was conducted using a numerical study, performed using a coupled heat and mass transfer model which takes into account the temperature dependence of the moisture retention curve. The model consists on coupling of envelope model with mono-zone building ambient air model which takes into account ventilation, occupants production and internal inertia in term of thermal and moisture buffering. The model of building envelope was validated by comparison against experimental data carried out on real scale wall. The results reveal that considering moisture retention curve as a temperature-dependent property leads to better prediction of the relative humidity variation in the material, whereas it has weak influence on temperature variations. However, the overall isothermal model may be enough to predict the temperature and relative humidity variations of the indoor ambient air of building. Results have showed good contribution of the internal thermal inertia to reduce temperature variation of the ambient air of building. In addition, simulations highlighted strong capacity, of the straw-rape concrete, to damp the high variations of outdoor relative humidity for all considered climates, especially in desert climate. This effect conduces to avoid accumulation of moisture in the material thus it may rise the life service of the wall.

}, url = {https://hal.archives-ouvertes.fr/hal-02350660}, author = {M. RAHIM and R. DJEDJIG and O. DOUZANE and T. LANGLET and M. EL-GANAOUI} } @article {1838, title = {The Effect of the Fin Length on the Solidification Process in a Rectangular Enclosure with Internal Fins}, journal = { FDMP-FLUID DYNAMICS \& MATERIALS PROCESSING }, volume = {15}, year = {2019}, pages = {125-137}, abstract = {

The aim of the proposed work is to study the solidification process within a rectangular enclosure provided with three internal rectangular fins attached to the left vertical wall of the cavity. This latest is filled with a phase change material (PCM), initially liquid, at a temperature above its melting temperature. The solidification process was initiated by cooling the left wall and fins to a temperature lower than the melting temperature. In order to study and examine the thermal behavior and thermal performance of the proposed system, a mathematical model, based on the conservation equations of mass, momentum and energy was developed. The governing equations and their associated boundary and initial conditions were next adimensionalyzed. Therefore, several controlling parameters were appeared. The volume control method was used to discretize the equations. The resulting algebraic equations were solved iteratively. Numerical investigations were carried out to study and examine the effect of the dimensionless fin length on the hydrodynamic and thermal fields of the flow, the dimensionless heat flux, the solidified mass fraction and the dimensionless time of complete solidification.

}, url = {http://tsp.techscience.com//uploads/attached/file/20190617/20190617075402_53703.pdf}, author = {L. KHATRA and H. EL-QARNIA and M. EL-GANAOUI} } @article {1789, title = { Experimental investigations on adhesive free laminated oak timber beams and timber-to-timber joints assembled using thermo-mechanically compressed wood dowels }, journal = { CONSTRUCTION AND BUILDING MATERIALS }, volume = {222}, year = {2019}, pages = {288-299}, abstract = {

This paper presents an experimental investigation on a novel adhesive free engineered Wood Products (AFEWPs) as an alternative to the conventional glued EWPs which have a high degree of petrochemicals. The research outcomes demonstrate the feasibility of using compressed wood dowels (CWD) as a joint element, to connect timber laminates and members as well as to substitute for adhesives and metallic fasteners. The paper describes the production of thermo-mechanically compressed wood dowels as well as the manufacturing of the dowelled timber specimens. The strength and stiffness properties of CWD are characterized based on three-point bending tests and compared to the values obtained from uncompressed wood specimens. After that, the paper discusses the relative mechanical performances of three-layer dowelled oak beams subjected to four-point bending, in comparison to their conventional glued counterparts. Finally, the paper shows results obtained from double shear push-out tests under both monotonic and cyclic loadings, using two wood species, namely spruce and oak. The obtained results show clearly the potential of thermo-mechanically compressed wood dowel, as a joint fastener, for load bearing capacity.

}, url = {https://hal.archives-ouvertes.fr/hal-02521217}, author = {I. EL-HOUJEYRI and V.D. THI and M. OUDJENE and M. KHELIFA and Y. ROGAUME and A. SOTAYO and Z. GUAN} } @article {1832, title = { Integration of the PCM with intra-ventilation for improved thermal and inertial characteristics of the building envelope }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {84}, year = {2019}, abstract = {

Several solutions based on phase change materials (PCM) are used for the thermal regulation of buildings. In this study, a combination of the inertial effect of PCM and intra-ventilation regulation is proposed. The purpose is to increase the thermal inertia of the building envelope leading to a fast passive and active cooling of the indoor environment. The principle of the solution is the use of a polymer-stabilized paraffin in external walls integrating ventilation pipes. For that, an experimental study of a hollow concrete block with PCM and ventilation tubes is conducted to test its thermal response. Gathered to this part, a 3D numerical model is developed under COMSOL Multiphysics (R). The obtained simulation results are in good agreement with the experimental data. A parametric study is then performed including its actual characteristics against several conditions; it is revealed that the use of PCM gathered to the ventilation tubes enhances the thermal phase shift. It is stated that the forced ventilation through the tubes makes it possible to manage the energy and contribute to the renewal of the air.

}, url = {https://hal.archives-ouvertes.fr/hal-02076663}, author = {A. LAAOUATNI and M. MARTAJI and R. BENNACER and M. EL-OMARI and L. BIN and M. EL-GANAOUI and A. Merabtine} } @article {1841, title = { Lignin-Based Carbon Nanofibers as Electrodes for Vanadium Redox Couple Electrochemistry }, journal = {NANOMATERIALS}, volume = {9}, year = {2019}, abstract = {

Three different types of lignin (kraft, organosolv and phosphoric acid lignin) were characterized and tested as precursors of electrospun nanofibers. Polyethylene oxide (PEO) was added as a plasticizer and dimethyl formamide (DMF) employed as a solvent. It was found that the molecular weight of lignin was the key parameter to understand the differences of the mechanical stability of the resultant fiber mats. In the case of kraft lignin (KL), the influence of some changes in the synthetic process was also tested: applied voltage, pretreatment in air or not, and the addition of a small amount of Ketjen black. After pyrolysis in nitrogen flow, the obtained carbon nanofibers (CNFs) were characterized by different techniques to analyze their differences in morphology and surface chemistry. Vanadium electrochemistry in 3M sulfuric acid was used to evaluate the different CNFs. All fibers allowed electrochemical reactions, but we observed that the oxidation of V(II) to V(III) was very sensitive to the nature of the raw material. Materials prepared from kraft and phosphorus lignin showed the best performances. Nevertheless, when 1 wt.\% of Ketjen black was added to KL during the electrospinning, the electrochemical performance of the sample was significantly improved and all targeted reactions for an all-vanadium redox flow battery were observed. Therefore, in this work, we demonstrated that CNFs obtained by the electrospinning of lignin can be employed as electrodes for vanadium electrochemistry, and their properties can be tuned to improve their electrochemical properties.

}, url = {https://hal.univ-lorraine.fr/hal-02125947}, author = {J.F. VIVO-VILCHES and A. CELZARD and V. FIERRO and I. ZIEGLER-DEVIN and N. BROSSE and A. DUFOUR and M. ETIENNE} } @article {1775, title = { Magnetic field impact on nanofluid convective flow in a vented trapezoidal cavity using Buongiorno{\textquoteright}s mathematical model }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {88}, year = {2019}, abstract = {

Numerical study for the effect of an external magnetic field on the mixed convection of Al2O3-water Newtonian nanofluid in a right-angle vented trapezoidal cavity was performed using the finite volume method. The non-homogeneous Buongiorno model is applied for numerical description of the dynamic phenomena inside the cavity. The nanofluid, with low temperature and high concentration, enters the cavity through the upper open border, and is evacuated through opening placed at the right end of the bottom wall. The cavity is heated from the inclined wall, while the remainder walls are adiabatic and impermeable to both the base fluid and nanoparticles. After validation of the model, the analysis was carried out for a wide range of Hartmann number (0 \<= Ha \<= 100) and nanoparticles volume fraction (0 \<= phi(0) \<= 0.06). The flow behavior as well as the temperature and nanoparticles distribution shows a particular sensitivity to the variations of both the Hartmann number and the nanofluid concentration. The domination of conduction mechanism at high Hartmann numbers reflects the significant effect of Brownian diffusion which tends to uniform the distribution of nanoparticles in the domain. The average Nusselt number which increases with the nanoparticles addition, depends strongly on the Hartmann number. Finally, a correlation predicting the average Nusselt number within such geometry as a function of the considered parameters is proposed.

}, author = {M. BENZEMA and Y.K. BENKAHLA and A. BOUDIAF and S.E. OUYAHIA and M. EL-GANAOUI} } @article {1776, title = { Modelling the hygrothermal behaviour of cement-bonded wood composite panels as permanent formwork }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {142}, year = {2019}, abstract = {

This paper reports on the hygrothermal behaviour of a new bio-based composite building material, based on recycled wood fibres used as eco-aggregate within a cementitious matrix. A coupled heat and moisture transfer was established through the material and resolved numerically with a model developed herein. Relative humidity and temperature were chosen as driving potentials. The hygric and thermal properties of the material were analysed and then used as input parameters in the model. The accuracy of the latter was verified by comparing the simulation results with experimental hygrothermal tests, from which the moisture buffering value (MBV) could be determined. The MBV showed that the wood-cement composite material might contribute to improve the indoor thermal comfort and be relevant for low-energy building design.

}, url = {https://hal.univ-lorraine.fr/LERMAB-UL/hal-02357702}, author = {M. LI and V. NICOLAS and M. KHELIFA and M. EL-GANAOUI and V. FIERRO and A. CELZARD} } @article {1834, title = { Morphological Approach for Nonlinear Flow and Heat Transfer in Complex Bio-Composite Material }, journal = { HEAT TRANSFER ENGINEERING }, volume = {40}, year = {2019}, pages = {1486-1497}, abstract = {

The bio-based materials have experienced in recent years a relevant evolution in construction and for many building applications. Despite the efforts to develop new solutions to achieve the objectives of numerical characterizations a few researches in this area have been carried out using a heterogeneous wood-cement composite. This study is based on a constructive approach using the finite volume method in order to generate a numerical model capable of reproducing;the equivalent transfer properties of a wood-cement composite. The challenge is to understand, design, and control this multiphase inhornogeneous structure and predict transfers and flows within the community in order to achieve an optimal functionality. Experimental measurements and microscopic characterization using X-ray microtomography were performed to compare and demonstrate the method validation. The comparative results demonstrate a less than 100\% deviation between the measurements and the simulations of the equivalent thermal properties. Thus, thermal conductivity and permeability, under different medium configurations, were characterized. Therefore, it was observed that these properties depend strongly on the porosity and the pore distribution in the continuous phase. Moreover, these two parameters are highly dependent on cement percentages in the structure.

}, author = {R.C. DEPTULSKI and F. MNASRI and M. EL-GANAOUI and R. BENNACER} } @article {1804, title = { Second law analysis of MHD mixed convection heat transfer in a vented irregular cavity filled with Ag-MgO/water hybrid nanofluid }, journal = { JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY }, volume = {137}, year = {2019}, pages = {1113-1132}, abstract = {

The present paper investigates numerically the effect of an external magnetic field on heat transfer and entropy generation of Ag-MgO (50:50vol\%)/water hybrid nanofluid flow in a partially heated irregular ventilated cavity. A finite-volume FORTRAN code has been written to solve the governing partial differential equations. New empirical correlations specifically dedicated to predict the dynamic viscosity and the thermal conductivity of the considered hybrid nanofluid were employed. After validation of model, the analysis has been done for a wide range of Reynolds number (10?Re?600), Hartmann number (0?Ha?80) and total nanoparticle volume fraction (0?phi?0.02). The results are presented in terms of streamlines, isotherms and isentropic lines as well as the average Nusselt number (Nu(m)), the average entropy generation (S-gen,(m)) and the Bejan number (Be-avg). The criterion =S-gen,(m)/Nu(m) is adopted to discuss the thermal performances of the system. The results reveal that the intensification of the magnetic field tends to attenuate the heat transfer convection and to reduce the thickness of the thermal boundary layer, close to the active walls. Globally, adding nanoparticles to the base fluid improves the heat transfer but increases the total entropy generation.

}, author = {M. BENZEMA and Y.K. BENKAHLA and N. LABSI and S.E. OUYAHIA and M. EL-GANAOUI} } @article {1830, title = { Some Insights on Unsteady Double Diffusive Natural Convection of Porous Medium in Vertical Open-Ended Cylinder }, journal = { ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING }, volume = {44}, year = {2019}, pages = {1379-1392}, abstract = {

The work presented in this paper deals with combined heat and mass transfer by natural convection in porous media. The aim is to investigate numerically the effect of control parameters on the flow behavior as well as the enhancement of heat transfer in vertical porous enclosure. The side wall temperature is periodic function of time which is the case in several physical problems. The Darcy\&$\#$39;s flow model coupled with the energy and mass equations is considered. The numerical results show that the flow\&$\#$39;s behavior is strongly dependent on the buoyancy ratio values. Three types of flows take place: chimney, reversal and top aspiration flow. Further, the effect of buoyancy ratio (N) at which the different flow types occur is significantly influenced by the values of control parameters. The relative heat transfer enhancement between constant and periodical wall temperature is profoundly affected by thermal Rayleigh number (Ra), buoyancy ratio and dimensionless amplitude (XA). In the case of opposing double diffusive flow, the relative difference becomes to the favor of the stationary case for high Ra and XA.

}, author = {N. HIMRANE and D.E. AMEZIANI and M. EL-GANAOUI and H. RAGUEB} } @article {1831, title = { Structural response of cement-bonded wood composite panels as permanent formwork }, journal = { COMPOSITE STRUCTURES }, volume = {209}, year = {2019}, pages = {13-22}, abstract = {

Bio-sourced materials combined with a cementitious matrix offer an interesting alternative to traditional construction materials. To contribute to their wider acceptance by the sustainable construction market, an investigation into the use of wood-cement composite panels as stay-in-place or permanent formwork is presented. As individual panels, the mechanical performance was evaluated through three point bending tests. But, as part of the formwork system, their overall structural performance was evaluated through finite element simulation under the action of lateral pressure exerted by the concrete in a liquid state. The Concrete Damage Plasticity Model (CPDM) available in the Abaqus code is adapted and used to model the mechanical behaviour of the wood-cement composite. The obtained results show wood-cement composite panels offer a promising alternative for the development of a lightweight permanent formwork system, that can contribute to the thermal and acoustic comfort of green buildings.

}, author = {M. LI and M. KHELIFA and A. KHENNANE and M. EL-GANAOUI} } @article {1822, title = { Thermal building control using active ventilated block integrating phase change material }, journal = { ENERGY AND BUILDINGS }, volume = {187}, year = {2019}, pages = {50-63}, abstract = {

In the context of improving energy efficiency and thermal comfort in the building, the use of phase change materials (PCMs) is one of the suggested solutions. The proposed integration solutions concern the building envelope as well as the applications related to its operation. The study of the incorporation of PCM in the walls of the building was the subject of numerous works. However, the antisymmetric character of storing/recovering energy management in the walls is less controlled and do not fit the optimal conditions. In this study, a solution based on the direct integration of a stabilized PCM (gel) in an envelope including ventilation channels, was proposed to overcome this problem of antisymmetry storing/recovering and fitting with different fixed ambient conditions. The final aim is to develop the optimization strategy of a wall combining the heavy inertia offered by the PCM, intra-ventilation control and the contribution to air renewal energy demand.

In this context, an experimental study of a concrete block system is conducted to test the thermal response of this configuration by the application of cyclic solicitations. The comprehension of this integrated constructive solution essentially passes by the possession of validated numerical tools. For this, two models have been developed. The first model using the electrical-thermal analogy, based on an RC equivalence, is distinguished by its relative simplicity and weak time computing demand. Each of these two factors, R and C summarise the system properties and has a direct influence on the building transient simulations over a year. The second one is based on direct numerical simulation DNS of the energy and fluid flow equations using commercial code COMSOL Multiphysics. Such DNS is time consuming and could not be used to simulate over a year but aims only to validate the first RC circuit approach. A comparison of these two models with the idealised experimental data was carried out and allowed the validation of the thermal behaviour of the solution based on the integration of the PCM with core ventilation.

}, author = {A. LAAOUATNI and N. MARTAJ and R. BENNACER and M. LACHI and M. EL-OMARI and M. EL-GANAOUI} } @article {1839, title = { Water resistance improvement by polyethyleneimine of tannin-furfuryl alcohol adhesives }, journal = { INTERNATIONAL WOOD PRODUCTS JOURNAL }, volume = {10}, year = {2019}, pages = {16-21}, abstract = {

In this research furfuryl alcohol (FA) and polyethyleneimine (PEI) in different ratio were added to a tannin based adhesive in order to improve its moisture resistance. In order to characterize the functional groups involved, Fourier-transform infrared spectroscopy (FTIR) was used. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to study the thermal behaviour of the formulations. FTIR spectroscopy indicated the reaction of quebracho tannin with FA and PEI. The results of the TGA showed that the added FA and PEI increased the resistance to thermal degradation. DSC analysis showed that the added FA and PEI reduced the heat absorption peak. According to the tensile shear strength of the formulations, the adhesive formulation T-1 F-0.75 P-20 (mixing proportion: Tannin 1, FA 0.75, PEI 20\%) was able to satisfy the standards requirements (BS 1204-2) as a moisture resistant adhesive. Furthermore, this formulation presented the best tensile shear tests results and the least number of delaminated samples.

}, author = {Y. SHIRMOHAMMADLI and P. MORADPOUR and A. ABDULKHANI and D. EFHAMISISI and A. PIZZI} } @article {1710, title = { Computational Simulation of Entropy Generation in a Combustion Chamber Using a Single Burner }, journal = {ENTROPY}, volume = {20}, year = {2018}, abstract = {

In this study, we examine the behavior of a propane diffusion flame with air in a burner; the computational investigations are achieved for each case employing the Fluent package. The graphs generated illustrate the influence of flow parameters, the effects of the oxygen percentage in the air, and the effects of the equivalence ratio phi on the entropy generation, the temperature gradients, and the Bejan number. The obtained results show that incorporation of hydrogen with propane reduced both temperature and carbon monoxide emission.

}, author = {S. MORSLI and A. SABEUR and M. EL-GANAOUI and H. RAMENAH} } @article {1718, title = { Effect of aligned and misaligned ventilation opening affecting energy demand and air quality in buildings }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {83}, year = {2018}, abstract = {

This work focuses on a horizontally ventilated cavity filled with air, heated on one side wall and cooled on the floor surface. Therefore, this study has been carried out for a convective loop induced for a fixed Rayleigh number Ra= 10(6) and horizontal ventilation (moderate Reynolds number Re= 100) where the injection is either in cooperating or opposing to the convective loop. The study undertaken concerns different opening position in order to analyze the energy efficiency of such ventilation and the corresponding indoor air quality. The results obtained indicate that the natural convection and the forced flow (ventilation) play an important role in the flow structure and the mixing ability, the heat exchange (cooling need) and the temperature comfort. The optimum ventilating position is a compromise in order to minimize the cooling demand, keep the mixing ability and reduce the temperature heterogeneity.

}, url = {https://hal.archives-ouvertes.fr/hal-02076687}, author = {S. MORSLI and H. RAMENAH and M. EL-GANAOUI and R. BENNACER} } @article {1719, title = { Modelling of heat transfer through permanent formwork panels exposed to high temperatures }, journal = { CONSTRUCTION AND BUILDING MATERIALS }, volume = {185}, year = {2018}, pages = {166-174}, abstract = {

A small-scale fire test was performed on a wood-cement panel intended as a permanent formwork. The tested panel was subjected on one side to a uniform heat flux of about 6 kW/m(2). Measurements of the temperature profiles were recorded with thermocouples embedded in the sample. The density and its variation with temperature were obtained by taking weight measurements. The thermal conductivity of the wood-cement composite at room temperature was determined using the hot plate method. Its variation with temperature and that of the specific heat were determined using analytical and numerical approaches. Using the obtained data, a pyrolysis model, implemented in Abaqus, was developed to simulate the effect of heat in the panel. The validation of the model is carried out by simulating charring tests. The model provided reasonable predictions for the thickness of the charred layer and the temperatures profiles across the depth of the panel. The model can supplement the testing of small laboratory samples to characterise the fire performance of these panels, and hence help establish their certification for use in sustainable construction.

}, author = {M. LI and A. KHENNANE and B. BRANDELET and M. EL-GANAOUI and M. KHELIFA and Y. ROGAUME} } @article {1722, title = { Numerical simulation of fire integrity resistance of full-scale gypsum-faced cross-laminated timber wall }, journal = { INTERNATIONAL JOURNAL OF THERMAL SCIENCES }, volume = {132}, year = {2018}, pages = {96-103}, abstract = {

Fire design requires three fire resistance criteria, namely integrity, insulation and load-bearing. In particular, repartition wall systems used in residential and commercial buildings are required to provide certification of insulation and integrity fire resistance and have to be analysed in the context of the characteristic time scales of a fire. This paper presents a numerical methodology to simulate the fire integrity resistance of full-scale timber based wall systems exposed to fire. The main contribution of this paper, with regard to the existing literature, is the presence of cross-laminated timber (CLT) panel in the central part of the wall system, where the pyrolysis of timber was modelled explicitly in the energy balance equation system. For this end, a user-subroutine, called UMATHT, is developed and successfully implemented in the Abaqus finite element code for thermal analysis. The falling off of the gypsum boards under fire was considered implicitly in the FE model based on experimental observations. The obtained results show clearly the need to take into account explicitly the cracks and falling off of the gypsum boards for an appropriate prediction of the integrity fire resistance in order to reduce expensive experimental procedures.

}, url = {https://hal.archives-ouvertes.fr/hal-02521730/}, author = {V.D. THI and M. KHELIFA and M. OUDJENE and M. EL-GANAOUI and Y. ROGAUME} } @article {1762, title = { REVIEW OF MODELING AND SIMULATION OF VOID FORMATION IN LIQUID COMPOSITE MOLDING }, journal = { COMPOSITES-MECHANICS COMPUTATIONS APPLICATIONS }, volume = {9}, year = {2018}, pages = {51-93}, abstract = {

Liquid composite molding (LCM) processes are being used in manufacturing near-net-shape, geometrically complex composite parts. One of the current obstacles to a larger scale application of these processes is the formation of defects such as voids during resin injection. To reach aeronautic requirements or short injection cycles in the automotive industry, entrapped air in the final part before curing has to remain as low as possible. Air entrapment will depend on the fibrous structure and on the injection parameters, or more precisely on the fluid pressure and the flow front orientation with respect to the fibrous direction. A key parameter for production of structural composite parts is air entrapment, since high void content could lead to mechanical softening, early failure, or part rejection. The quantitative simulation of the void formation is important for proper design and selection of material and processing parameters to minimize such voids in the composite materials. Despite several advancements in voidage predictions via modeling and simulations, the void formation mechanisms in RTM and similar processes are still not fully understood. In this study, a review of current approaches to modeling and simulation of void formation and unsaturated flow in the liquid composite molding process is presented. We examine modeling efforts considering all the mechanisms involved such as void formation and transport, bubble compression, and gas dissolution. In particular, the capillary number is identified as a key parameter for void formation and transport. The influence of voids on the global resin flow is also investigated and a state-of-the-art is presented.

}, author = {A. SAAD and A. ECHCHELH and M. HATTABI and M. EL-GANAOUI} } @article {1768, title = { Small to large scale mixed turbulent convection: buildings application }, journal = { INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT \& FLUID FLOW }, volume = {28}, year = {2018}, pages = {188-205}, abstract = {

The use of natural ventilation by large openings to maintain thermal comfort conditions in the premises is a concept that is perfectly integrated into the traditional architecture of countries in the Mediterranean region or in tropical climates. In a temperate climate where the architecture is not usually designed to respond to the use of natural ventilation is seasonal and is done at the initiative of the occupants by making changes in the design of their doors. The European interest in natural ventilation, as a passive building air- conditioning technology, is increasing and has been the subject of a research program commissioned by the European Community. In this work, the authors consider a part of a housing compound as a refreshing floor. This floor is maintained at a constant cold temperature, the one vertical wall at hot temperature and other surfaces are adiabatic. Various scenarios are considered for this work. Mixed convection for different boundary conditions and different configurations is carried out. In addition, an airflow is injected through a window and extracted on the opposite window. Classical conclusion and transitional value on Richardson number have been completed by the new thermal configuration with nonsymmetric thermal conditions. The complex 3D flow structure is more obvious when one of the two flows (ventilation or natural convection) dominates. However, the induced heat transfer is less sensitive to the added ventilation. In this study, the authors consider a part of a housing compound as a refreshing floor. This floor is maintained at a constant cold temperature, the one vertical wall at hot temperature and other surfaces are adiabatic.

}, url = {https://hal.archives-ouvertes.fr/hal-01724258}, author = {S. MORSLI and M. BOUSSOUFI and A. SABEUR and M. EL-GANAOUI and R. BENNACER} } @article {1708, title = { Tannins as a sustainable raw material for green chemistry: A review }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {126}, year = {2018}, pages = {316-332}, abstract = {

Tannins as herbal extracts are a good alternative for green chemistry. They are found aplenty in some plant species and can be extracted by simple methods. The tannins main feature and advantage is their phenolic structure which is very similar to synthetic phenols. Another key feature of tannins is their actions as antioxidants. The use of tannins is often connected to one of these features. They are now actively used in leather tanning, adhesive making (especially wood adhesives), fisheries, beverages manufacturing, animal feed and many others. Considerable amounts of research has also been recently conducted on the possibility of using tannins in the manufacture of biosourced foams, wood preservatives, corrosion inhibitors, polyurethane surface coatings, epoxy adhesives, binders for Teflon coatings and etc. This paper deals with different uses of tannins and with the latest research which has been done on this subject.

}, author = {Y. SHIRMOHAMMADLI and D. EFHAMISISI and A. PIZZI} } @article {1763, title = { Thermal energy and economic analysis of a PCM-enhanced household envelope considering different climate zones in Morocco }, journal = { INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY }, volume = {37}, year = {2018}, pages = {515-532}, abstract = {

This study investigates the thermal energy potentials and economic feasibility of an air-conditioned family household-integrated phase change material (PCM) considering different climate zones in Morocco. A simulation-based optimisation was carried out in order to define the optimal design of a PCM-enhanced household envelope for thermal energy effectiveness and cost-effectiveness of predefined candidate solutions. The optimisation methodology is based on coupling Energyplus (R) as a dynamic simulation tool and GenOpt (R) as an optimisation tool. Considering the obtained optimum design strategies, a thermal energy and economic analysis are carried out to investigate PCMs integration feasibility in the Moroccan constructions. The results show that the PCM-integrated household envelope allows minimising the cooling/heating thermal energy demand vs. a reference household without PCM. While for the cost-effectiveness optimisation, it has been deduced that the economic feasibility is stilling insufficient under the actual PCM market conditions. The optimal design parameters results are also analysed.

}, author = {Y. KHARBOUCH and A. MIMET and M. EL-GANAOUI and L. OUHSAINE} } @article {1712, title = { Thermal performance investigation of a PCM-enhanced wall/roof in northern Morocco }, journal = { BUILDING SIMULATION }, volume = {11}, year = {2018}, pages = {1083-1093}, abstract = {

Energy efficiency improvement in building sector has become a real challenge in Morocco, especially in the northern region evolving a rapid urban growth. In this context, using the phase change materials (PCM) in the construction is presented as one of the promising solutions to enhance the thermal behaviour of building envelope. This work aims to investigate the thermal performance of a PCM integrated external wall and roof under the summer climate conditions of northern Morocco. Dynamic thermal characterization methodology is adopted through the calculation of decrement factor (DF) and time lag (TL) parameters. For that, a one-dimensional numerical model based on resistance-capacitance (RC) approach is developed and implicitly solved to simulate the heat transfer process through a wall/roof structure. The model is validated through a new small-scale experimental device. Different qualities of PCM, regarding its peak phase change temperature, have been evaluated. Moreover, the PCM layer emplacement within the wall/roof structure was evaluated considering two possible configurations. The obtained results show a significative enhancement of the thermal performance of different wall facades and roof through the use of the suitable PCM quality. An appropriate selection of PCM layer emplacement yields an evidenced enhancement in the case of the roof. As for the walls, the integration of PCM from the interior side increase the TL period but has a negative impact on the DF parameter.

}, author = {Y. KHARBOUCH and L. OUHSAINE and A. MIMET and M. EL-GANAOUI} } @article {1661, title = { Competition between the lid driven and the natural convection of nanofluids taking into consideration the Soret effect }, journal = { INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER }, volume = {114}, year = {2017}, pages = {1341-1349}, abstract = {

Natural convection, in a shallow horizontal cavity filled with a nanofluid, is studied. The flow is driven by Lid driven convection (LDC). External applied constant heat fluxes on the bottom wall of the cavity is applied, whereas the vertical walls are subjected to variable heat fluxes. The nanofluid concentration is treated as heterogeneous mixtures with a weak solutal diffusivity. A modified formulation taking into account the physical properties (thermal conductivity, viscosity) versus on nanofluids type and concentration and the spatial heterogeneous concentration induced by the Soret effect is presented. The induced nanofluid heterogeneity can affect the heat transfer. The heat transfer increases with increase of the boundary motion. The analytical solution, based on parallel flow approximation, is found to be in good agreement with numerical solution. The existence of both natural and anti-natural flows is demonstrated. Indeed, the subcritical Rayleigh number for the onset of instability tends to disappear when the supercritical threshold is largely affected.

}, author = {F.S. OUESLATI and R. BENNACER and M. EL-GANAOUI and A. EL-CAFSI} } @article {1675, title = { Finite element analysis of heat transfer through timber elements exposed to fire }, journal = { ENGINEERING STRUCTURES }, volume = {143}, year = {2017}, pages = {11-21}, abstract = {

Since timber is a combustible material, its safe use in construction will depend on a proper knowledge and modelling of the physical and chemical reactions involved in the pyrolysis, that affect the temperature growth and thus the performance of timber in fire. Based on the comprehensive one-dimensional analytical models of the pyrolysis available in the literature, it is required to implement a predictive FE model via a user-defined subroutine in the dedicated commercial software in order to describe more closely the real physical phenomena that undergo timber exposed to fire. This paper presents the implementation of the UMATHT subroutine in the Abaqus software. The obtained results showed a fairly good agreement with experimental ones from the literature. However, at this stage of the study the pyrolysis is taken into account implicitly in the developed UMATHT through gradually modified thermo-physical properties of the timber, as commonly adopted in the published literature. Work is now in progress to implement explicitly the different reactions of the pyrolysis in the developed UMATHT.

}, url = {https://hal.archives-ouvertes.fr/hal-02521755/}, author = {V.D. THI and M. KHELIFA and M. OUDJENE and M. EL-GANAOUI and Y. ROGAUME} } @article {1682, title = { Moisture sorption isotherms and thermodynamic properties of Oak wood (Quercus robur and Quercus canariensis): optimization of the processing parameters }, journal = { HEAT AND MASS TRANSFER }, volume = {53}, year = {2017}, pages = {1541-1552}, abstract = {

The aim of this paper was to determine the moisture desorption isotherms and essentials thermodynamic properties of two Oak wood varieties. Desorption isotherms were measured using a static gravimetric method at 50, 60, 70 and 80 degrees C within the range of 5-90 \% relative humidity. The equilibrium moisture content decreased with increasing temperature and decreased with decreasing relative humidity at a constant temperature. The \&$\#$39;Thermodynamic\&$\#$39; sorption equation was found to be the best for describing the experimental moisture sorption isotherms of woods within the range of temperature and water activity investigated. The Fiber saturation point, deduced from the \&$\#$39;Thermodynamic\&$\#$39; model parameters, depends on the temperature and varying from 22.6 to 54.4 (\% kg water/kg dry matter). Isosteric heat of desorption and differential entropy were calculated by applying Clausius-Clapeyron equation to the desorption data fitted by the \&$\#$39;Thermodynamic\&$\#$39; model. The isosteric heat of desorption and the differential entropy decreased with increasing moisture content according to an exponential law equation and varying from 2.03 to 31.14 kJ/mol and from 73.98 to 4.34 J/(mol K), respectively. The linear relationship between differential enthalpy and entropy satisfied the enthalpy-entropy compensation theory. The sign of Gibbs free energy was found to be positive (+283 J/mol) and (+97 J/mol) for Quercus robur and Quercus canariensis, respectively. The isokinetic temperature was found to be greater than the harmonic temperature. Based on the enthalpy-entropy compensation theory, it could be concluded that the moisture desorption isotherm of Oak wood is a non-spontaneous and enthalpy-controlled process.

}, author = {R. BAHAR and S. AZZOUZ and R. REMOND and S. OUERTANI and M.T. ELAIEB and M.A. EL-CAFCI} } @article {1699, title = { NUMERICAL ANALYSIS OF HEAT, AIR, AND MOISTURE TRANSFERS IN A WOODEN BUILDING MATERIAL }, journal = { THERMAL SCIENCE }, volume = {21}, year = {2017}, pages = {785-795}, abstract = {

The present paper aims to predict the hygrothermal behavior of massive wood panel considered as bio-based building material. In this context, we developed a macroscopic model coupled no linear heat, air, and moisture transfers that incorporates simultaneously the effect of thermal diffusion and infiltration phenomenon on the building material. The model inputs parameters were evaluated experimentally according to the recognized standards of material\&$\#$39;s characterization. Therefore, numerous series of hygrothermal calculation were carried out on the 1-D and 2-D configuration in order to assess the dimensionless effect on such wooden material. Two types of boundary conditions were considered and examined. The first are at the material scale of wood drying process. The second type of conditions is at the wall scale, where the conditions of the building ambiance are considered. Moreover, the model sensitivity to the driving potentials coupling and to the parameters variability was considered and examined. It has been found that the coupling in the model had a remarkable impact on both kinetics of temperature and moisture content.

}, url = {https://hal.archives-ouvertes.fr/hal-01684849}, author = {F. MNASRI and K. ABAHRI and M. EL-GANAOUI and R. BENNACER and S. GABSI} } @article {1678, title = { Numerical investigation of heat and momentum transfer to particles in high temperature thermal spraying }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {78}, year = {2017}, abstract = {

Numerical analysis has been performed on the motion of a spherical particle injected into high temperature thermal plasma flows in order to disclose the mechanisms of heat transfer enhancement and to establish reliable correlations for heat transfer between the plasma gas and the particle. In terms of fluid dynamics occurring, the Navier-Stokes equations were solved for Ar-H-2 mixture plasma gas in a two-dimensional system by finite element method (FEM). Computational simulation was undertaken to model the correlations for fine spherical particles in Ar 25\%-H-2 75\% as plasma gas from 1100 to 9100 K at atmospheric pressure. Our results reveal the general consensus of Nusselt number, followed by increasing deviations as the temperature increases. Additionally, a comparison between our data and the predictions of other published correlations are given.

}, author = {A. AISSA and M. EL-GANAOUI and M. SAHNOUN} } @article {1698, title = { A numerical study of indoor air quality in a ventilated room using different strategies of ventilation }, journal = { MECHANICS \& INDUSTRY }, volume = {18}, year = {2017}, abstract = {

This study aimed to numerically investigate the air flow and contaminant dispersion in a ventilated room. The URANS equations supplemented with energy and concentration equations are solved using the scStream code. We are targeting primarily the ventilation effectiveness (epsilon(c)) and the index of indoor air quality (I-IAQ). Different displacement and mixing ventilation modes are investigated in isothermal conditions. The ventilation flow rate is 50 m(3). h(-1) Here, our ultimate aim is to suggest an effective ventilation that can ensure a good indoor air quality. The RNG k - epsilon model was adopted to handle the turbulence. CFD simulations were systematically checked, whenever possible, through available results. The simulation results indicate that the ventilation effectiveness to remove a contaminant and the index of indoor air quality are substantially influenced by the ventilation mode and the location of inlet and outlet air. From this study, it appears that the air flow and contaminant dispersion in a ventilated room can be typically predicted or evaluated by computer simulations.

}, author = {L. KOUFI and Z. YOUNSI and Y. CHERIF and H. NAJI and M. EL-GANAOUI} } @article {1687, title = { Tannin-boron complex as a preservative for 3-ply beech plywoods designed for humid conditions }, journal = { HOLZFORSCHUNG }, volume = {71}, year = {2017}, pages = {249-258}, abstract = {

Boric acid (BA) effectively controls wood-rotting fungi and termite attack but is readily leached out in outdoor exposure. A newly developed tannin-boron (TB) complex has been investigated to reduce BA leaching and to preserve beech plywood from biological attack. Wood veneers were impregnated with different TB solutions and then bonded with a melamine urea formaldehyde (MUF) adhesive for bond class 2 applications. The formation of a solid hydrophobic TB network on the veneer surfaces partially decreased the tensile shear strength of plywood but the prepared panels met the requirements for bond class 2. The plywood samples made from veneers treated with only BA solutions showed fair resistance against white rot fungus and termite attack, but the durability decreased even after mild leaching tests. The panels made of treated veneers with TB formulations showed instead a high resistance against biological attack after mild leaching and to some extent after severe leaching tests. This depended on the concentration of tannin and BA in the solutions. Favorable results were obtained with 20\% tannin in the formulation. The results of the termites feeding choice test were more positive than those obtained by a forced feeding test. The control samples were attacked faster and showed higher weight loss when alternative samples included TB formulations.

}, author = {D. EFHAMISISI and M.F. THEVENON and Y. HAMZEH and A. PIZZI and A. KARIMI and K. POURTAHMASI} } @article {1705, title = { Thermal effects of an innovative green wall on building energy performance }, journal = { MECHANICS \& INDUSTRY }, volume = {18}, year = {2017}, abstract = {

Green walls and green roofs are innovative construction technologies involving the use environmentally friendly materials. In addition to their aesthetical and environmental benefits, green walls have significant thermal effects on buildings and heat islands within high-density urban areas. In this paper, we study the impact of an innovative green wall system on building energy performance. These green walls have specific composition and particular geometry that can lead to higher thermal performances and therefore more significant impact on building energy performance. The development, validation and prior integration of a hygrothermal green wall model in a transient building simulation tool make possible the assessment of the energy performance of buildings when covered by green walls. The used model was adapted to be the particular forms and composition of the studied green walls. In parallel, this type of green walls has been installed on a one tenth building mockup to be experimented. The aim of the experiment is to measure the thermal effects and to calibrate some parameters of the numerical model. The results highlight the thermal benefits of this kind of green walls in summer condition. They reduce annual energy demand of building up to 37\% for hot climates.

}, url = {https://hal.archives-ouvertes.fr/hal-02113149/}, author = {R. DJEDJIG and M. EL-GANAOUI and R. BELARBI and R. BENNACER} } @article {1662, title = { USING A PARAMETRIC STUDY TO ANALYSE THE PERFORMANCE OF WOOD SOLAR DRYERS WITH GLAZED WALLS }, journal = { MADERAS-CIENCIA Y TECNOLOGIA }, volume = {19}, year = {2017}, pages = {463-470}, abstract = {

Parameters characterizing wood and air were studied in order to analyze the performance of a wood solar dryer functioning under Moroccan climate. A mathematical model based on the climate data of Rabat city was used to investigate theoretically the wood drying process. Two wood speciesthuya (Tetraclinis articulate) and pine (Pinus pinaster)-were examined in the present study. The results obtained by computer simulations are in good agreement with the experimental values. Furthermore, our findings indicate that the use of a global mass transfer coefficient for low temperature convective and homogenous drying conditions allows the influence of the principal operating parameters (wood thickness, wood density, air temperature, air velocity and ventilation mode) on the drying time to be estimated with great accuracy. Analyses pertaining to the two studied wood species revealed that(1) pine dries more quickly than thuya, (2) the drying process is faster in the summer relative to other seasons, (3) increasing the air velocity by 100\% results in a 20\% reduction in the drying time, and (4) continued ventilation reduces the drying time by 43\%.

}, author = {N. BEKKIOUI and A. ZOULALIAN and A. HAKAM and H. EZ-ZAHRAOUY} } @article {1697, title = { Wind effect on full-scale design of heliostat with torque tube }, journal = { MECHANICS \& INDUSTRY }, volume = {18}, year = {2017}, abstract = {

Despite the importance of designing support structures for solar collectors, very little reliable work has been done to investigate the forces of the wind on heliostats of solar tower at real scale. Wind loads on heliostats are usually determined at low-speed wind tunnels scale, where the design full-scale Reynolds number cannot be reached. In the present study, measured data are used to validate the simulations at wind tunnel scale. Thereafter, by using the same method, three-dimensional numerical simulations of turbulent wind flow around a big heliostat of solar tower are performed. The obtained numerical results are presented for several elevation angles at normal operation and stow position. The results revealed that the known stow position (when the backside of the heliostat is facing the ground) is not the optimum position (other optimum elevation angles are discovered) especially with high wind speed, and the effect of torque tube is significant on heliostat mean wind loads.

}, author = {M. MAMMAR and S. DJOUIMAA and A. HAMIDAT and S. BAHRIA and M. EL-GANAOUI} } @article {1642, title = { Finite element modelling of the pyrolysis of wet wood subjected to fire }, journal = { FIRE SAFETY JOURNAL }, volume = {81}, year = {2016}, pages = {85-96}, abstract = {

The modelling of the pyrolysis of wet wood provides more realistic fire scenarios for structural fire design by taking into account variable thermal properties of wood which are beyond the scope of conventional structural fire design codes. The proposed numerical methodology has been written in MATLAB environment. A 2D nonlinear finite element analysis (FEA) is performed to model the pyrolysis of wet wood subjected to high temperature. The varying of thermal proprieties of wood are discussed from the point of view of changes of structure and chemical composition under fire condition. The validity of the model is established by comparing the predicted results with results from fire resistance tests presented in literature. Qualitatively, the model provides good agreement with the experimental data. It is shown that the model can handle layers of a wooden composite structure. Temperature profiles at different points in the wood sample and the two-dimensional charring depth of Laminated Veneer Lumber (LVL) panels are calculated and compared with experimental data.

}, url = {https://hal.archives-ouvertes.fr/hal-01599583}, author = {V.D. THI and M. KHELIFA and M. EL-GANAOUI and Y. ROGAUME} } @article {1636, title = { In Vitro and In Vivo Anti-Melanoma Effects of Pituranthos tortuosus Essential Oil Via Inhibition of FAK and Src Activities }, journal = { JOURNAL OF CELLULAR BIOCHEMISTRY }, volume = {117}, year = {2016}, pages = {1167-1175}, abstract = {

A large number of plants used in traditional medicines have been shown to possess antitumor activities. The aims of this study were to evaluate any anticancer effect of the essential oil (EO) extracted from P. tortuosus against B16F10 melanoma cancer cells in vitro as well as in vivo. In vitro, EO was shown to induce apoptosis and to inhibit migration and invasion processes. Further investigation revealed that EO decreased focal adhesion and invadopodia formation which was accompanied by a drastic downregulation of FAK, Src, ERK, p130Cas and paxillin. Moreover, EO treatment decreased the expression level of p190RhoGAP, and Grb2, which impair cell migration and actin assembly. Mice bearing the melanoma cells were used to confirm any in vivo effectiveness of the EO as an anti-tumor promoting agent. In mice dosed with 100 mg EO/kg/d (for 27 days), tumor weight was inhibited by 98\% compared to that in mice that did not receive the product. In conclusion, these data suggested to us that an EO of P. tortuosus could evolve to be a potential medicinal resource for use in the treatment of cancers.

}, url = {https://hal.univ-lorraine.fr/hal-01598421}, author = {M. KRIFA and S.E. EL-MESHRI and N. BENTOUATI and A. PIZZI and E. SICK and L. CHEKIR-GHEDIRA and P. RONDE} } @article {1635, title = { Induced Tannin Adhesive by Boric Acid Addition and Its Effect on Bonding Quality and Biological Performance of Poplar Plywood }, journal = { ACS SUSTAINABLE CHEMISTRY \& ENGINEERING }, volume = {4}, year = {2016}, pages = {2734-2740}, abstract = {

Quebracho tannin wood adhesive in a non formaldehyde approach has a low hardening rate and needs more pressing time than formaldehyde-based wood adhesives during wood composites production. In this study, boric acid (BA) was used to increase autocondensation rate of tannin to make poplar plywood. The main ingredients of the adhesives included quebracho tannin, NaOH, hexamine, BA and polymeric isocyanate (PMDI). Thermomechanical analysis of without BA adhesives showed that maximum modulus of elasticity increased with increasing the initial tannin concentration from 40\% to 50\% (w/w), whereas no significant effect has been found by adding PMDI. Moreover, the addition of BA lowered time and temperature of hardening and increased modulus of elasticity of the adhesive. Also, tensile shear strength increased significantly with increasing the tannin concentration and the BA content (from 2\% to 4\%). Interestingly, applied BA in the glueline not only improved bonding quality of the panels but also provided good preservative performance against fungal attack even after mild leaching test.

}, author = {D. EFHAMISISI and M.F. THEVENON and Y. HAMZEH and A.N. KARIMI and A. PIZZI and K. POURTAHMASI} } @article {1630, title = { Melting of nanoparticle-enhanced phase change material inside an enclosure heated by laminar heat transfer fluid flow }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {74}, year = {2016}, abstract = {

The proposed work presents a numerical investigation of the melting of a phase change material (PCM: Paraffin wax P116) dispersed with nanoparticles (Al2O3) in a latent heat storage unit (LHSU). The latter is composed of a number of vertical and identical slabs of nano-enhanced phase change material (NEPCM) separated by rectangular channels through which passes heat transfer fluid (HTF: water). A mathematical model based on the conservation equations of mass, momentum and energy has been developed. The resulting equations are discretized using the finite volume approach. The numerical model has been validated by experimental and numerical results published in literature. Numerical investigations have been conducted to evaluate the effects of the volumetric fraction of nanoparticles, HTF mass flow rate and inlet temperature on the latent heat storage unit\&$\#$39;s thermal behaviour and performance. Modelling results show that the volumetric fraction, HTF mass flow rate and inlet temperature need to be designed to achieve a significant improvement in thermal performance.

}, author = {R. ELBAHJAOUI and H. EL-QARNIA and M. EL-GANAOUI} } @article {1615, title = { Mild hydroxypropylation of polyflavonoids obtained under pilot-plant scale }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {87}, year = {2016}, pages = {350-362}, abstract = {

Condensed tannins from pine (Pinus radiata), mimosa (Acacia mearnsii), and quebracho (Schinopsis lorenzii) were modified with propylene oxide (PO) via a mild derivatization (20 degrees C, 24 h). The hydroxypropylation to three PO/C-15 ratio (1, 2, 3) produced polyphenolic derivatives in reasonable yields (60-90\%). Evidense of modification was described by functional group analysis, and tannin biological properties (binding-, and antioxidant-capacity). Isolated products were characterized by physicochemical methods (solubility test, molecular weight distribution, and thermal analysis). H-1 NMR provided evidence of strong structure-properties relationship in function of the A-ring type, and C -\> C linkage features. Pine tannin fractions exhibited the best PO-uptake. Acetoxy signal intensity of acetylated derivatives revealed that mimosa and quebracho tannins are less reactive polyflavonoids toward hydroxypropylation at room temperature. Thermal behavior, solubility, and antioxidant-, and binding-capacity were affected by the modification. However, pine tannins behavior differ from those highly purified polyflavonoids.

}, author = {D.E. GARCIA and C.A. FUENTEALBA and J.P. SALAZAR and M.A. PEREZ and D. ESCOBAR and A. PIZZI} } @article {1633, title = { Numerical damage prediction in dowel connections of wooden structures }, journal = { MATERIALS AND STRUCTURES }, volume = {49}, year = {2016}, pages = {1829-1840}, abstract = {

The behaviour of timber connections is very complex because of the interaction between brittle and ductile failure modes that develop within the contact areas between the timber and the dowel. Simulating this behaviour numerically requires the use of multidimensional failure criteria as well as the use of coupled constitutive equations accounting for both non-linear isotropic hardening and isotropic ductile damage. Such a formulation is proposed in the present work and implemented within a Vumat user-defined subroutine in Abaqus/Explicit. The model is used to simulate the behaviour of a double shear timber steel connection. Good agreement was found between the FE results and experimental ones, which showed the good capability of the model to predict the onset of ductile damage and growth. It was found that failure results from ductile defects initiation, growth and propagation inside narrow shear bands wherein the plastic strain is highly localised.

}, url = {https://hal.archives-ouvertes.fr/hal-01294587}, author = {M. KHELIFA and A. KHENNANE and M. EL-GANAOUI and A. CELZARD} } @article {1602, title = { Parametric study of solar heating and cooling systems in different climates of Algeria - A comparison between conventional and high-energy-performance buildings }, journal = {ENERGY}, volume = {113}, year = {2016}, pages = {521-535}, abstract = {

Parametric optimization using dynamic simulation of a solar thermal system for producing hot water, space heating and cooling was developed. The system layouts include a single-effect absorption chiller activated by heat generated by flat plate solar collectors and stored in a solar storage tank. Two construction types were compared; the first is the typical construction in Algeria (low thermal mass with U-values of 1.25 W/m(2)K, single glazing), which represents the majority in the country, while the second is a High-Energy-Performance building (with U-values of 0.35 W/m(2)K, double glazing), representing the pilot project called ECO-BAT. Three of Algeria\&$\#$39;s regions were considered to evaluate the climatic effect of solar systems integration. Algiers represents the coastal region; Djelfa, the highlands region; Tamanrasset, the Sahara region. In parametric study, two solar collectors\&$\#$39; field parameters were analysed, including the surface area and the tilt angle. The results indicated that building loads are significantly reduced (12\%, 44\% and 22\% for Algiers, Djelfa and Tamanrasset, respectively). The solar energy contribution is more than 60\% for all cases, a significant contribution for an efficient building. In all cases, we observed that the solar fraction reaches more than 45\% when the optimum parameters of the solar system are selected.

}, author = {S. BAHRIA and M. AMIRAT and A. HAMIDAT and M. EL-GANAOUI and M.E. SLIMANI} } @article {1610, title = { Performance of silica gel-water solar adsorption cooling system }, journal = { CASE STUDIES IN THERMAL ENGINEERING }, volume = {8}, year = {2016}, pages = {337-345}, abstract = {

The technology of cold production by adsorption is an effective way of heat conversion. It can significantly improve energy efficiency and reduce environmental pollution. For this purpose, an experimental platform has been developed combining an internal combustion gas engine (cogenerator), a refrigerating adsorption machine, thermal solar collectors and wooden construction split in two compartment, a cold one conditioned by cooling ceilings and a hot one conditioned by heating floors. The platform is completely instrumented. We developed a simulation model that is confronted to experimental measurements. This paper deals with numerical study of refrigeration systems with silica gel / water pair with SIMULINK. The results include the total solar radiation, the temperature profiles of hot, cooling and chilled water in addition to Temperature profiles of cogenerator and room.

}, author = {G. NAJEH and G. SLIMANE and M. SOUAD and B. RIAD and M. EL-GANAOUI} } @article {1650, title = { PERMEABILITY IDENTIFICATION FOR A FIBER-REINFORCED COMPOSITE BY INVERSE ANALYSIS }, journal = { COMPOSITES-MECHANICS COMPUTATIONS APPLICATIONS }, volume = {7}, year = {2016}, pages = {81-93}, abstract = {

The permeability of textile reinforcements is a crucial input to the simulation of a composite material process. In this paper, we present an accurate simulation approach for identifying fiber reinforcement permeability in the resin transfer moulding (RTM) process. The Gauss-Newton-Levenberg-Marquardt method was utilized to identify the permeabilities of fibrous reinforcement. Knowing the boundary conditions, the permeability can be deduced from pressure values at some given positions through the part. Starting from the initial estimate of permeability, the inverse method begins by solving the direct problem. The solution gives the pressure field everywhere in a composite sample. The calculated pressure field is then compared with an analytical pressure based on a criterion. The permeability is modified iteratively so as to minimize this criterion until the desired accuracy is achieved. A comparison between experimental and the computed parameters is used as convergence criteria in the iterative inverse technique, and good agreement is found.

}, author = {A. SAAD and A. ECHCHELH and M. HATTABI and M. EL-GANAOUI and M. AHD} } @article {1632, title = { Physical incorporation of particles in a porous media: a path to a smart wood }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {74}, year = {2016}, abstract = {

The aim of this work is to develop a functional wood incorporating, in its surface, physical and chemical properties that meet society demand. For instance: fire resistance, magnetic electrical conduction (metal-wood particles), antibacterial reaction (copper-wood), anti-pollution (zeolite-wood), dry coloring, reflective effects (minerals-wood). As part of the research on wooden materials, the technique of \"JAZOLTHOP(1)\" driving micrometric particles before combining them and moving in supersonic speeds was used in the framework of enriching a wooden substrate. Various tests were conducted on two wooden materials (fir and ash tree) submitted to four typologies of particles (steel shot, garnet, corundum and glass beads). The surfaces of the test samples were machined beforehand for a use of conventional smooth quality, thus defining a reference surface before incorporation. The enriched samples were characterized by using two optical techniques; firstly a surface technique through macroscopy Leica 110X ZP, then a volume technique through tomography(2). Subsequently, volume simulations (wood-inclusions) were implemented to study the thermal transfer. The obtained results showcase the existence of certain set conditions to reach the critical fluency of incorporation and to localize the enrichment on a parallel plan to the sample surface. The results show also the influence of particles concentration and the kind of the chosen wood on the final composite matrix/particle media.

}, author = {A. ZERRIAA and M. EL-GANAOUI and C. GERARDIN and A. TAZIBT and S. GABSI} } @article {1649, title = { Scrutiny of spray jet and impact characteristics under dispersion effects of powder injection parameters in APS process }, journal = { INTERNATIONAL JOURNAL OF THERMAL SCIENCES }, volume = {100}, year = {2016}, pages = {229-239}, abstract = {

This study aims to analyse axisymmetric turbulent argon plasma jet charged with particle/droplet stream and its impact characteristics during atmospheric spraying process. The governing partial differential equations are solved using a double population lattice Boltzmann (LB) numerical model (D2Q9-D2Q4) coupled LES turbulence model. The powder dynamics and heating were modeled using a Lagrangian plasma particles interaction model. A validation of the developed LB model on argon plasma jet was done, leading to credible results and the focus was thus mainly made on the plasma particle exchanges during the powder journey in argon plasma. The effects of injection conditions on the spray stream of molten particles and the particles impacting conditions (velocity, temperature, melting rate, ...) are carried out for four selected operating parameters, i.e. particle diameter, injection velocity, injection position (along injector section) and the injection angle at the injector exit. It has been observed that the LB method is a powerful tool for investigating plasma jet flows. It was concluded through the tracking model of the micro-sized particles that the present LB-based results agree well with the FD-based results and that the spray stream depends strongly on the studied injections conditions. Besides, the splashing phenomenon is found to be a rule governing particle/droplet impact behaviors.

}, author = {R. DJEBALI and M. EL-GANAOUI and A. JAOUABI and B. PATEYRON} } @article {1631, title = { Thermofluid effect on energy storage in fluidized bed reactor }, journal = { EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS }, volume = {74}, year = {2016}, abstract = {

The development of innovative systems of heat storage is imperative to improve the efficiency of the existing systems used in the thermal solar energy applications. Several techniques were developed and realized in this context. The technology of the sand fluidized bed (sandTES) offers a promising alternative to the current state-of-the-art of the heat storage systems, such as fixed bed using a storage materials, as sand, ceramic, and stones, etc. Indeed, the use of the fluidization technique allows an effective heat transfer to the solid particles. With the sand, an important capacity of storage is obtained by an economic and ecological material [N. Mahfoudi, A. Moummi, M. El Ganaoui, Appl. Mech. Mater. 621, 214 (2014); N. Mahfoudi, A. Khachkouch, A. Moummi B. Benhaoua, M. El Ganaoui, Mech. Ind. 16, 411 (2015); N. Mahfoudi, A. Moummi, M. El Ganaoui, F. Mnasri, K. M. Aboudou, 3(e) Colloque internationale Francophone d\&$\#$39; energetique et mecanique, Comores, 2014, p. 91]. This paper presents a CFD simulation of the hydrodynamics and the thermal transient behavior of a fluidized bed reactor of sand, to determine the characteristics of storage. The simulation shows a symmetry breaking that occurs and gave way to chaotic transient generation of bubble formation after 3 s. Furthermore, the predicted average temperature of the solid phase (sand) increases gradually versus the time with a gain of 1 degrees C in an interval of 10 s.

}, author = {N. MAHFOUDI and M. EL-GANAOUI and A. MOUMMI} } @article {1646, title = { Wood machining with a focus on French research in the last 50 years }, journal = { ANNALS OF FOREST SCIENCE }, volume = {73}, year = {2016}, pages = {163-184}, abstract = {

Context Woodcutting is a very old technology but scientific research is scarce on the subject. In the last 50 years, much work on basic mechanisms as well as on industrial processes has been done in France.

Aims The specific nature of wood introduces strong differences between wood and metal cutting processes. The paper focuses on French teams\&$\#$39; contributions.

Results The basic aspects of the tool-material interaction for different basic modes in woodcutting are highlighted. In primary conversion such as sawing, veneer cutting or green wood chipping, huge progress comes from automation and the possibility of linking the process to log and product quality through new sensors. In secondary processing, much has been done on the links between the cutting process, surface qualification and the properties of these surfaces for further processing, such as gluing or coating. Tool wear depends on the cutting process, timber quality and species. Trade-offs are required in tool technology and coating technologies may improve tool life.

Conclusion A large amount of knowledge and innovation has come from 50 years of worldwide research effort, with France being particularly active in this period. The transfer of skills from metals cutting industry was often a key, but much is needed to move closer to both metal cutting sector and woodcutting skills among craftsmen.

}, url = {https://hal.univ-lorraine.fr/LERMAB-UL/hal-01135156}, author = {B. THIBAUT and L. DENAUD and R. COLLET and R. MARCHAL and J. BEAUCHENE and F. MOTHE and P.J. MEAUSOONE and P. MARTIN and P. LARRICQ and F. EYMA} } @article {1574, title = { Analytical and numerical solution to the convection problem in a shallow cavity filled with two immiscible superposed fluids }, journal = { INTERNATIONAL JOURNAL OF THERMAL SCIENCES }, volume = {90}, year = {2015}, pages = {303-310}, abstract = {

Natural convection, in a shallow horizontal cavity filled with two layers immiscible fluids, is studied both numeric and analytic. The horizontal walls of the enclosure are heated by the bottom and cooled by the upper by a uniform heat fluxes while the verticals one are subject to heat fluxes of variable intensity. The analytical solution, based on the parallel flow approximation, is found to be in good agreement with a numerical solution. The existence of both natural and antinatural flows is demonstrated. Indeed, the critical Rayleigh number for the onset of motion is dependent on the side heating intensity. In the case where the upper fluid is more viscous than the bottom one, multiple solutions are possible as well as the a steady states in a range of ratio of the viscosity of the fluids. The fact that one of the two fluids is more heat conductive, affect not only heat transfer generated but also the intensity of flows and the existence of the third cell where we found several solutions. The present model yields explicitly the flow patterns and Nusselt numbers in terms of the governing parameters of the problem.

}, url = {https://hal.univ-lorraine.fr/hal-01597079}, author = {F.S. OUESLATI and R. BENNACER and M. EL-GANAOUI} } @article {1568, title = { Characterization of Miscanthus pyrolysis by DRIFTs, UV Raman spectroscopy and mass spectrometry }, journal = { JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS }, volume = {113}, year = {2015}, pages = {402-411}, abstract = {

The aim of this work was to identify and quantify the chemical and structural modifications occurring during the pyrolysis of Miscanthus x giganteus. Miscanthus was pyrolyzed at slow heating rate (5 K/min) in the temperature range 200-400 degrees C. The biochars were then characterized by combining diffuse reflectance infrared Fourier transform spectrometry (DRIFTs) and Ultraviolet Raman spectrometry (UV Raman). In addition, the quantification of the functional groups remained on the biochars was conducted by temperature programmed desorption-mass spectrometer (TPD-MS) analysis.

DRIFT analysis showed that the decrease in the hydroxyl and C-H stretching bands and the evolution of the carboxyl vibration peak mainly occur between 300 and 350 degrees C. The evolution of the main markers (H2O, CO, CO2, CH4, and H-2) of the functional groups presents in the biochars as analyzed by TPD-MS is consistent with the spectroscopic analysis. It shows two peaks. The first one in the temperature range of 200-380 degrees C was explained by the loss of the main O- and H- containing groups and to the main primary volatile compounds. The second step (above 380 degrees C) can be interpreted by the rearrangement of the aromatic rings in the polycyclic structure.

}, url = {https://hal.archives-ouvertes.fr/hal-01230722}, author = {Y. ELMAY and Y. LE-BRECH and L. DELMOTTE and A. DUFOUR and N. BROSSE and R. GADIOU} } @article {1561, title = { Comparison of the impact of different extraction methods on polyphenols yields and tannins extracted from Moroccan Acacia mollissima barks }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {70}, year = {2015}, pages = {245-252}, abstract = {

The performance of three techniques, conventional maceration at room temperature, infusion and microwave assisted extraction, was evaluated to extract polyphenols, condensed and hydrolysable tannins from Moroccan barks of Acacia mollissima. A comparison of these methods was performed using colorimetric assays. For each technique, the effect of extraction conditions on the yield extracts was evaluated. The variables studied are: solvent nature, barks ages, time extraction, power extraction and heat interaction with solvent nature and barks ages. This study proved that the choice of solvent extraction was a relation of the extraction method used and the extractible nature (polyphenols, condensed or hydrolysable tannins). Methanol was the best solvent to extract tannin and polyphenols using maceration at room temperature, and ethanol was the best for infusion at 60 degrees C. Microwave was more selective to extract polyphenols and tannins under extraction solvent used. Highest polyphenols contents was obtained using methanol. For condensed and hydrolysable tannins, the highest were obtained using water. The polyphenols contents extracted using maceration was closed to the yield obtained with microwave, 354 mg GAE/g bark, 442 mg GAE/g bark, respectively. This study proved the pertinence of traditional methods to extract polyphenols and tannins compared to the new extraction method (microwave). The best polyphenols yields, condensed and hydrolysable tannins were obtained by microwave followed by the yield obtained by maceration and finally the yield obtained by infusion.

}, url = {https://hal.univ-lorraine.fr/hal-01595994}, author = {R. NAIMA and M. OUMAM and H. HANNACHE and A. SESBOU and B. CHARRIER and A. PIZZI and F.C. EL-BOUHTOURY} } @article {1585, title = { Design and characterization of a portable heat storage facility }, journal = { MECHANICS \& INDUSTRY }, volume = {16}, year = {2015}, abstract = {

This paper deals with the experimental investigation of transient behavior and thermal storage capability of a sensible heat storage unit. The former is designed to store solar energy by using sand as a storage medium. A cubic unit has been designed employing three configurations of embedded charging tubes to study the performances of the system. The storage material used in this experimentation (sand) has been characterized by its, grain size, density, and heat capacity. Performances of the thermal storage bed (including charging time, energy stored rate, charging energy efficiency) have been evaluated for selecting the storage material. From our experiments, we found that the number of charging tubes affects significantly the storage performances.

}, author = {N. MAHFOUDI and A. KHACHKOUCH and A. MOUMMI and B. BENHAOUA and M. EL-GANAOUI} } @article {1570, title = { Flavonoid tannins linked to long carbohydrate chains - MALDI-TOF analysis of the tannin extract of the African locust bean shells }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {67}, year = {2015}, pages = {25-32}, abstract = {

Nere (Parkia biglobosa) or African locust bean tree tannins have been extracted in two different ways: (i) by an artisanal maceration method and (ii) by a commercial-like extraction in presence of bisulfite. The type of oligomers obtained in the two cases were rather different. Mostly polyphenolic oligomers are present in the case of the commercial like extraction, while for the artisanal maceration technique the unusual presence of long carbohydrate residues attached to the flavonoids were obtained. MALDI-TOF analysis showed short flavonoid oligomers linked to chains presenting up to 22 carbohydrate residues. Some stilbenes were also noticed in the extracts. These differences in the extracts obtained by different methods indicates that an extraction procedure needs to be chosen according to the final use the tannin extract is destined to.

}, url = {https://hal.univ-lorraine.fr/hal-01598433}, author = {S. DROVOU and A. PIZZI and C. LACOSTE and J.Z. ZHANG and S. ABDULLA and F.M. EL-MARZOUKI} } @article {1398, title = {Heat treatment of Tunisian soft wood species: effect on the durability, chemical modifications and mechanical properties.}, journal = {Maderas-Cienc Tecnol}, volume = {17(4)}, year = {2015}, pages = {699 - 710}, author = {M. ELAIEB and K. CANDELIER and A. PETRISSANS and S. DUMARCAY and P. GERARDIN and M. PETRISSANS} } @article {1586, title = { Hyperbranched Poly(amidoamine)s as Additives for Urea Formaldehyde Resin and Their Application in Particleboard Fabrication }, journal = { BIORESOURCES }, volume = {10}, year = {2015}, pages = {782-792}, abstract = {

Three types of hyperbranched poly(amidoamine)s (PAMAMs), namely HB(MA-EDA)1, HB(MA-EDA)3, and HB(MA-DETA)1.2, were synthesized and used as modifiers for urea-formaldehyde (UF) resin. Particleboards bonded with these modified UF resins were fabricated and evaluated. The results showed that these PAMAMs caused some adverse effects on UF resin performance. The main problems of PAMAMs were their high buffer capacity and high pH values, which are attributed to the peripheral amino groups at the terminals, both of which had a serious negative influence on UF resin curing. These findings were supported by the gel time measurements in parallel with a predictive investigation on the resins using thermomechanical analysis (TMA). The gel time was prolonged, and the maximum modulus of elasticity (MOE) values decreased with the addition of HB(MA-EDA)3. The use of a strong acid curing agent (HCOOH) could reduce the gel time into a normal range; however the performance of the corresponding particleboards still deteriorated. Therefore, these PAMAMs are considered not suitable for the modification of UF resin when applied as final additives. Beyond all expectations, the modified UF resin that employed very finite amounts of HB(MA-EDA)1 as a pH regulator instead of NaOH yielded a considerable upgrade in performance of the produced particleboards.

}, url = {https://hal.archives-ouvertes.fr/hal-01598426/}, author = {J.Z. ZHANG and S. AMIROU and H.A. ESSAWY and A. PIZZI and Q. GAO and J.Z. LI} } @article {1563, title = { Immunomodulatory and anticancer effects of Pituranthos tortuosus essential oil }, journal = { TUMOR BIOLOGY }, volume = {36}, year = {2015}, pages = {5165-5170}, abstract = {

Many studies have been performed to assess potential utility of natural products as immunomodulants to enhance antitumor activity in situ. In this study, an essential oil (EO) from the aerial parts of Pituranthos tortuosus was prepared using hydrodistillation, its composition was characterized, and its immunomodulatory potential was assessed. The results indicated that the EO contained sabinene, a-pinene, limonene, and terpinen-4-ol as major constituents. EO was also found to be able to significantly promote lipopolysaccharide (LPS)-stimulated splenocyte proliferation, suggestive of a potential for activation of B cells and enhanced humoral immune responses in hosts given this product. Effects of EO on cell proliferation and apoptosis were also investigated in B16F10 melanoma cells. EO-induced tumor cell growth inhibition was associated with characteristic apoptotic changes in the cells, including nuclear condensation. In conclusion, these data suggested to us that an EO of P. tortuosus could evolve to be a potential medicinal resource for use in the treatment of cancers.

}, url = {https://hal.univ-lorraine.fr/hal-01598446}, author = {M. KRIFA and H. EL-MEKDAD and N. BENTOUATI and A. PIZZI and K. GHEDIRA and M. HAMMAMI and S.E. EL-MESHRI and L. CHEKIR-GHEDIRA} } @article {1589, title = { Improving urea formaldehyde resin properties by glyoxalated soda bagasse lignin }, journal = { EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS }, volume = {73}, year = {2015}, pages = {77-85}, abstract = {

The aim of this research was a reduction of formaldehyde emission and the improvement of the water resistance of urea formaldehyde (UF) resins by incorporating glyoxalated soda bagasse lignin. For this purpose, various contents of unmodified and glyoxalated lignins (10, 15 and 20 \%) were added at pH = 7 instead of second urea during the UF resin synthesis. The properties of the resins as well as water absorption, shear strength, and formaldehyde emission of plywood panels made with these adhesives were measured. Among all the resins synthesized, the resin yielding the best results (based on formaldehyde emission and gelation time as well as water absorption, mechanical strength, and formaldehyde content of the associated panels) was selected, and its properties were further analyzed by Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectrometry (FTIR), and X-ray Diffractometry (XRD). The lignin based resins yielded good shear strength of the plywood panels, passing comfortably relevant international standard specifications; the panels also showed lower formaldehyde emission and water absorption when compared to commercial UF adhesives. Based on these findings, it was attempted to improve the performance of soda bagasse lignin in UF resins by glyoxalation. The UF resin containing 15 \% glyoxalated lignin (GLUF15) still exhibited less water absorption and formaldehyde release without significant differences in shear strength and physicochemical properties compared to the UF resin control. DSC analysis indicated that in comparison to UF resin the curing process of GLUF resin shifted to lower temperatures. According to the FTIR spectra, by addition of lignin the proportion of C-N bond in methylene linkages decreases when urea is partly replaced by lignin or glyoxalated lignin. XRD analysis indicated that the crystallinity of the UF resins decreased with addition of glyoxalated lignin.

}, url = {https://hal.archives-ouvertes.fr/hal-01597471}, author = {H. YOUNESI-KORDKHEILI and S. KAZEMI-NAJAFI and R.B. ESHKIKI and A. PIZZI} } @article {1415, title = {The influence of heat and chemical treatments of beech wood on the shear strength of welded and UF bonded specimens, }, journal = {Eur. J. Wood Prod. }, volume = {73}, year = {2015}, chapter = {685-687}, author = {ZIGON, J. and PIZZI, A. and ZHANG, H. and SEGA, B. and COP, M. and {\v S}ERNEK, M.} } @article {1566, title = { Isocyanate free condensed tannin-based polyurethanes }, journal = { EUROPEAN POLYMER JOURNAL }, volume = {67}, year = {2015}, pages = {513-526}, abstract = {

Condensed flavonoid tannins from Maritime Pine (Pious pinaster), Mimosa (Acacia mearnsii), and Radiata Pine barks, and Quebracho (Schinopsis lorentzii and balansae) wood, were first reacted with dimethyl carbonate. Then hexamethylenediamine was added to these mixtures to form urethane linkages. The resulting materials were analyzed by Fourier transform infrared (FTIR) spectroscopy, matrix assisted laser desorption ionization time of flight (MALDI-TOF) mass spectrometry, gel permeation chromatography (GPC), and thermogravimetric analysis (TGA). Finally the resulting analysis indicated that the products obtained are polyurethanes. Initial wood coating applications tests were carried out under conditions of higher temperature and some pressure, and the contact angle of the surface coatings so prepared was measured.

}, author = {M. THEBAULT and A. PIZZI and H.A. ESSAWY and A. BARHOUM and G. VAN-ASSCHE} } @article {1248, title = {Low-pressure superheated steam drying of a porous media and the inversion temperature.}, journal = {Drying Technology: an International Journal}, volume = {33}, year = {2015}, month = {2015}, chapter = {111}, url = {https://hal.univ-lorraine.fr/hal-01599789}, author = {S. MESSAI and J. SGHAIER and L. CHRUSCIEL and M. EL-GANAOUI and S. GABSI} } @article {1550, title = {MHD mixed convection and entropy generation of a nanofluid in a vertical porous channel}, journal = { COMPUTERS \& FLUIDS }, volume = {121}, year = {2015}, pages = {164-179}, abstract = {

A numerical study of entropy generation and MHD mixed convection flow of a nanofluid in a vertical porous channel is made. The left plate is thermally insulated, whereas four discrete heat sources dissipating a uniform heat flux are mounted on the right wall which is adiabatic elsewhere. Both assisting and opposing flows are considered. The Darcy-Brinkman-Forchheimer model with the Boussinesq approximation is adopted and the finite volume method is used to solve the governing equations with the appropriate boundary conditions. The influence of the magnetic field strength (Hartmann number), Joule heating effect (Eckert number), buoyancy force intensity (Richardson number), nanoparticles volume fraction, as well as porous medium permeability (Darcy number) on velocity profiles, isotherms, isentropic lines, global Nusselt number and total entropy generation are analyzed. The results showed an enhancement on heat transfer rate by using a porous medium, a nanofluid, a magnetic field without taking into account the Joule heating and when mixed convection is assisted. Globally, entropy generation increases with the parameters cited above.

}, url = {https://hal.univ-lorraine.fr/hal-01599798}, author = {I. FERSADOU and H. KAHALERRAS and M. EL-GANAOUI} } @article {1583, title = { NUMERICAL INVESTIGATION OF HEAT TRANSFER DURING SOLIDIFICATION IN A RECTANGULAR ENCLOSURE WITH INTERNALLY HORIZONTAL PARTIAL FINS}, journal = { COMPUTATIONAL THERMAL SCIENCES }, volume = {7}, year = {2015}, pages = {293-312}, abstract = {

The paper aims to investigate numerically the thermal and flow characteristics of an internally finned rectangular enclosure during the solidification process of a superheated phase change material (PCM). This work is motivated by the need to intensify heat transfer and accelerate the discharge process in latent heat storage units. A mathematical model is developed and a fixed-grid enthalpy formulation is adopted for modeling the solidification process coupling with convection-conduction heat transfer. The finite volume method was used for discretization. The obtained numerical results are compared with experimental and numerical ones found in the literature and reasonable agreement is obtained. Numerical investigations were carried out to evaluate the effects of the aspect ratios of the rectangular enclosure, A, and fins, A(f), on the heat transfer enhancement, by keeping the mass of the PCM and fins constant. Solutions are obtained for aspect ratios A (ranging from 3 to 8) and A(f) (ranging from 2.69 to 13.89). A comparative study of finned and unfinned enclosures shows clearly that introducing fins weakens the undesirable natural convection, improves the nondimensional rate of heat extraction, and assures rapid solidification. Results indicate that for an aspect ratio A = 4 and in the range of the aspect ratio A(f) explored in this study, the nondimensional solidification time is reduced by 17.74\%. The results also reveal that for a fin aspect ratio of A(f) = 5, the nondimensional solidification time is reduced by 49.48\% when the aspect ratio of the enclosure, A, varies from 3 to 8.

}, url = {https://hal.univ-lorraine.fr/hal-01599785}, author = {L. KHATRA and H. EL-QARNIA and M. EL-GANAOUI and E. LAKHAL} } @article {1260, title = {Numerical modelling of 3D dowelled timber joints using advanced fully coupled hydro-mechanical constitutive equations }, journal = {Mechanics and Industry}, year = {2015}, author = {M. KHELIFA and A. KHENNANE and M. EL-GANAOUI and A. CELZARD} } @article {1594, title = { Numerical Simulation of Entropy Generation in Hydrogen-Air Burner }, journal = { FDMP-FLUID DYNAMICS \& MATERIALS PROCESSING }, volume = {11}, year = {2015}, pages = {342-353}, abstract = {

The aim of this work is the numerical simulation of the combustion of hydrogen with air in a burner and the numerical solution of local entropy generation rate in the combustion chamber. The effects of equivalence ratio phi and oxygen percentage. on combustion and entropy generation rates are studied for different f(ranging from 0 to 1.0) and. values (ranging from 10 to 30\%). The predictions show that the increase of f (or the decrease of.) reduces notably the reaction rate levels. The equations of continuity, of energy and momentum are solved by volume finite using commercial code CFD Fluent, the effects of turbulence will be modeled by the RNG-K-epsilon model, on the other hand the generation of the entropy will be introduced in post-processing.

}, author = {S. MORSLI and A. SABEUR and M. EL-GANAOUI} } @article {1587, title = { NUMERICAL STUDY OF THE SPREADING AND SOLIDIFICATION OF A MOLTEN PARTICLE IMPACTING ONTO A RIGID SUBSTRATE UNDER PLASMA SPRAYING CONDITIONS }, journal = { THERMAL SCIENCE }, volume = {19}, year = {2015}, pages = {277-284}, abstract = {

This paper deals with simulation of the spreading and solidification of a fully molten particle impacting onto a preheated substrate under traditional plasma spraying conditions. The multiphase problem governing equations of mass, momentum and energy conservation taking into account heat transfer by conduction, convection, and phase change are solved by using a finite element approach. The interface between molten particle and surrounding air, is tracked using the Level Set method. The effect of the Reynolds number on the droplet spreading and solidification, using a wide range of impact velocities (40-250 m/s), is reported. A new correlation that predicts the final spread factor of splat as a function of Reynolds number is obtained. Thermal contact resistance, viscous dissipation, wettability and surface tension forces effects are taken into account.

}, url = {https://hal.univ-lorraine.fr/LERMAB-UL/hal-01592092}, author = {S. OUKACH and H. HAMDI and M. EL-GANAOUI and B. PATEYRON} } @article {1571, title = { Pine (P. pinaster) and quebracho (S. lorentzii) tannin-based foams as green acoustic absorbers }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {67}, year = {2015}, pages = {70-73}, abstract = {

Open cells structure tannin-furanic foams prepared using two different types of tannins have been shown to give good sound absorption/acoustic insulation characteristics at medium and high frequencies (1000-4000 Hz) with coefficients of acoustic absorption of 0.85-0.97. Their acoustic absorption coefficient was lower 0.40-0.60 at lower frequencies (250-500 Hz). Compared with commercial foams, tannin-furanic foams have the same typical behavior of light porous materials. The more open-cell is the material the better is its sound absorption. Thicker samples absorb better at medium frequencies for all types of porous material tested.

}, url = {https://hal.archives-ouvertes.fr/hal-01294760}, author = {C. LACOSTE and M.C. BASSO and A. PIZZI and A. CELZARD and E.E. EBANG and N. GALLON and B. CHARRIER} } @article {1584, title = { RANZ AND MARSHALL CORRELATIONS LIMITS ON HEAT FLOW BETWEEN A SPHERE AND ITS SURROUNDING GAS AT HIGH TEMPERATURE }, journal = { THERMAL SCIENCE }, volume = {19}, year = {2015}, pages = {1521-1528}, abstract = {

Direct numerical simulations for axisymmetric plasma jet are developed to investigate particle plasma spraying process. In this paper we study the plasma jet and we focus mainly on the plasma-particle exchanges. Finite element analysis employing COMSOL multiphysics software is used in this simulation. Finally, comparisons are made with the numerically observed particle Nusselt\&$\#$39;s numbers and theoretically predicted Nusselt\&$\#$39;s numbers based on the Ranz and Marshall correlation. The results agree well with those obtained previously.

}, url = {https://hal.univ-lorraine.fr/LERMAB-UL/hal-01599788}, author = {A. AISSA and M. ABDELOUAHAB and A. NOUREDDINE and M. EL-GANAOUI and B. PATEYRON} } @article {1391, title = {Utilisation of hydrophilic/ hydrophobic poly(amidoamine)s as additives for melamine-urea-formaldehyde (MUF) adhesives and consequent application in particleboard fabrication,}, journal = {Polymers Adv. Technol. }, year = {2015}, pages = { 2255-2264 }, author = {S. AMIROU and J. ZHANG and H. ESSAWY and A. PIZZI and A. ZERIZER and L. DELMOTTE} } @article {1393, title = {Utilization of temperature kinetic as prediction{\textquoteright}s way of a method to predict treatment intensity and corresponding wood properties of thermally modified}, journal = {Maderas-Cienc Tecnol}, year = {2015}, month = {17(2) /2015}, pages = {253-262}, author = {K. CANDELIER and S. HANNOUZ and M. ELAIEB and R. COLLET and S. DUMARCAY and A. PETRISSANS and P. GERARDIN} } @article {1259, title = {Wood machining with a focus on French research in the last 50 years}, journal = {Annals of Forest Science}, volume = {72}, year = {2015}, author = {B. THIBAULT and L. DENAUD and R. COLLET and R. MARCHAL and J. BEAUCHENE and F. MOTHE and P. MARTIN and P.J. MEAUSOONE and P. LARRICQ and F. EYMA} } @article {1191, title = {Accelerated autocondensation of quebracho tannin by boric acid to make poplar plywood. }, journal = {J. Forest and Wood Products (Iran)}, year = {2014}, month = {2014}, author = {D. EFHAMISISI and Y. HAMZEH and M.F. THEVENON and A. KARIMI and A. PIZZI and K. POURTAHMASI} } @article {1290, title = {Analytical and numerical solution to the convection problem in a shallow cavity filled with two immiscible superposed fluids}, journal = {International Journal of Thermal Sciences}, volume = {90}, year = {2014}, month = {2014}, chapter = {303}, author = {S. FAKHREDDINE and S. OUESLATI and R. BANNACER and M. EL-GANAOUI} } @article {1243, title = {Comparison of 1D and 2D models predicting a packed bed drying }, journal = {Int. J. Multisci. Des Optim. }, volume = {5}, year = {2014}, month = {2014}, author = {S. MESSAI and M. EL-GANAOUI and J. SGHAIER and L. CHRUSCIEL and S. GABSI} } @article {1288, title = {Effect of double thermal modulation on heat transfer in a square cavity heated from bellow}, journal = {Engineering Solid Mechanics}, volume = {2}, year = {2014}, month = {2014}, chapter = {139}, author = {A. AKHIATE and A. SEMMA and M. EL-GANAOUI and A. ANOUAR} } @article {1198, title = {Effect of some hyperbranched poly(amidoamine)s as additives for urea formaldehyde (UF) resin before their application in particleboards fabrication. }, journal = {BioRessources}, volume = {10}, year = {2014}, month = {2014}, chapter = {782}, author = {J. ZHANG and S. AMIROU and A. PIZZI and Q. GAO and H. ESSAWY and J. LI} } @article {1223, title = {Energy Tri-generation : combined gas cogeneration/Solar Cooling}, journal = {International Journal of Thermal and Environmental Engineering}, volume = {7}, year = {2014}, month = {2014}, chapter = {79}, author = {BENELMIR, R. and N. GHILEN and M. EL-GANAOUI and D. DESCIEUX and S. GABSI} } @article {1292, title = {The identification of effective thermal conductivity for fibrous reinforcement composite by inverse method}, journal = {Journal of Reinforced Plastics and Composites}, volume = {33}, year = {2014}, month = {2014}, chapter = {2183}, author = {A. SAAD and A. ECHCHELH and M. HATTABI and M. EL-GANAOUI} } @article {1231, title = {Influence of thermal treatment and impregnation on the durability of wood colour.}, journal = {Journal of Forestry Products and Industries}, volume = {3}, year = {2014}, month = {2014}, chapter = {42}, author = {I. EL-BAKALI and S. YAGI and M. HAMZAH and B. GEORGE and A. MERLIN and X. DEGLISE} } @article {1196, title = {Isocyanate free condensed tannin-based polyurethanes}, journal = {European Polym. J.}, year = {2014}, month = {10/2014}, author = {M. THEBAULT and A. PIZZI and H. ESSAWY and A. BAROUM and G. VAN-ASSCHE} } @article {1294, title = {Numerical investigation of diffusion turbulent propane/air flame}, journal = {Energy, Environment, Biology and Biomedicine}, year = {2014}, month = {2014}, author = {S. MORSLI and M. EL-GANAOUI and A. SABEUR-BENDEHINA} } @article {1293, title = {Numerical simulation of vertical Bridgman solidification of CdZnTe}, journal = {International Journal for Simulation and Multidisciplinary Design Optimization}, volume = {A23}, year = {2014}, month = {2014}, author = {H. JAMAI and B. PATEYRON and H. SAMMOUDA and M. EL-GANAOUI} } @article {1291, title = {Sand as a heat storage media for a solar application : simumation results}, journal = {Applied Mechanics and Materials}, volume = {621}, year = {2014}, month = {2014}, chapter = {214}, author = {N. MAHFOUDI and A. MOUMMI and M. EL-GANAOUI} } @article {1158, title = {Second generation of dendritic poly(amidoaldehyde) as modifying components of melamine-urea-formaldehyde (MUF) adhesive: subsequent use in particleboard production. }, journal = {J. Polymer Research}, volume = {21}, year = {2014}, author = {X. ZHOU and H.A. ESSAWY and A. PIZZI and J. ZHANG and H. PASCH and G. DU} } @article {1295, title = {Simulation of hydrogen absorption in a magnesium hybride tank}, journal = {Fluid Dynamics \& Materials Processing}, volume = {10}, year = {2014}, month = {2014}, chapter = {149}, author = {K. LAHMER and R. BESSA{\"I}H and A. SCIPIONI and M. EL-GANAOUI} } @article {1289, title = {Technology Platform ENERBAT {\textendash} Gas cogeneration, Solar heating and cooling.}, journal = {International Journal of Thermal \& Environmental Engineering}, volume = {7}, year = {2014}, month = {2014}, chapter = {79}, author = {BENELMIR, R. and N. GHILEN and M. EL-GANAOUI and D. DESCIEUX and S. GABSI} } @article {1179, title = {Utilization of hydrophilic/hydrophobic Hyperbranched Poly(amidoamines)s additives fort melamine urea formaldehyde (MUF) adhesives.}, journal = {Polymer Composites}, year = {2014}, month = {2014}, author = {S. AMIROU and J. ZHANG and A. PIZZI and H. ESSAWY and A. ZERIZER and J. LI and L. DELMOTTE} } @article {394, title = {Comparative study of conductometric glucose biosensor based on gold and on magnetic nanoparticles}, volume = {33}, number = {1}, year = {2013}, pages = {298-303}, publisher = {Materials Science and Engineering C}, author = {VERDEL, W. and NOUIRA, W. and MAAREF, A. and ELAISSARI, H. and SIADAT, M.} } @article {1281, title = {From the guest editors of part one analytical methods to non-linear heat transfer and diffusion.}, journal = {Thermal Science}, volume = {17}, year = {2013}, month = {2013}, chapter = {9}, author = {J. HRISTOV and M. EL-GANAOUI} } @article {649, title = {An investigation in thermochemical changes in Canadian hardwood species during wood welding. }, journal = {European J.Wood \& Wood Prod.}, volume = {71}, year = {2013}, month = {2013}, chapter = {245-257}, author = {B. BELLEVILLE and T. STEVANOVIC and A. CLOUTIER and A. PIZZI and M. PRADO and S. ERAKOVIC and P. DIOUF and M. ROYER} } @article {1280, title = {A lattice Boltzmann based investigation of powder in-flight characteristics during APS process, Part II : Effects of parameter dispersions at powder injection. }, journal = {Surface \& Coatings Technology}, volume = {220}, year = {2013}, month = {2013}, chapter = {157}, author = {R. DJEBALI and B. PATEYRON and M. EL-GANAOUI} } @article {1285, title = {Modeling of nonlinear wooedn columns reinforced by carbon fiber}, journal = {M{\'e}canique \& Industries}, volume = {14}, year = {2013}, month = {2013}, chapter = {219}, author = {F. BENTAYEB and I. TAVAKOLI-GHEYNANI and M. EL-GANAOUI and A. BOUALIA and M. KHELIFA} } @article {1287, title = {A new model for the simulation and improvement of resin transfer molding process}, journal = {Process research on Precision Instrument and Machinery}, volume = {2}, year = {2013}, month = {2013}, author = {A. SAAD and A. ECHCHELH and M. HATTABI and M. EL-GANAOUI} } @article {1283, title = {Numerical study of the spreading and solidification of a molten particle impacting onto a rigid substrate under plasma spraying conditions}, journal = {Thermal Science}, year = {2013}, month = {2013}, author = {S. OUKACH and H. HAMDI and M. EL-GANAOUI and B. PATEYRON} } @article {683, title = {Poly(amidoamine)s dendrimers of different generations as components of melamine urea formaldehyde (MUF) adhesives used for particleboards production: What are the positive implications?}, journal = {J.Polymer Res.}, volume = {20}, year = {2013}, month = {2013}, chapter = {267-280}, author = {X. ZHOU and H. ESSAWY and A. PIZZI and X. LI and H. PASCH and N. PRETORIUS and G. DU} } @article {1286, title = {Pseudo-bond graph model for the analysis of the thermal behavior of buildings thermal science.}, journal = {Journal of Thermal Science}, volume = {17}, year = {2013}, month = {2013}, chapter = {723}, author = {A. Merabtine and R. Benelmir and M. EL-GANAOUI} } @article {600, title = {A supramolecular hydrogel based on an original pseudopeptidic catanionic surfactant New Journal of Chemistry.}, journal = { New Journal. Chem.}, volume = {37}, year = {2013}, month = {2013}, chapter = {559-562}, author = {C. GERARDIN-CHARBONNIER and F. OBOUNOU-AKONG and A. PASC and M. EMO} } @article {1284, title = {Thermal impedance estimations by semi-derivatives and semi-integrals 1-D semi-infinite cases}, journal = {Thermal Science}, volume = {17}, year = {2013}, month = {2013}, chapter = {581}, author = {J. HRISTOV and M. EL-GANAOUI} } @article {1282, title = {Thermo-mechanical modeling of the splat formation in plasma spray conditions}, journal = {Physical and Chemical News}, volume = {67}, year = {2013}, month = {2013}, chapter = {113}, author = {S. OUKACH and H. HAMDI and M. EL-GANAOUI and B. PATEYRON} } @article {636, title = {Upgrading of MUF Wood Adhesives for Particleboard by Highly-Branched Polymers}, journal = {J.Adh.Sci.Technol}, volume = {27}, year = {2013}, month = {2013}, chapter = {1058-1068}, author = {X. ZHOU and H. ESSAWY and A. PIZZI and X. LI and K. RODE and G. DU} } @article {1276, title = {A 2D LATTICE Boltzmann full analysis of MHD convective heat transfer in saturated porous square enclosure}, journal = {CMES Tech. Science Press}, volume = {84}, year = {2012}, month = {2012}, chapter = {499}, author = {R. DJEBALI and M. EL-GANAOUI and T. NAFFOUTI} } @article {1279, title = {Analytical and innovative solutions for heat transfer problems involving phase change and interfaces. }, journal = {Comptes Rendus M{\'e}canique}, volume = {340}, year = {2012}, month = {2012}, chapter = {463}, author = {M. EL-GANAOUI and J. HRISTOV and M. LACROIX} } @article {1271, title = {Analytical and Numerical solutions for natural convection in a shallow cavity filled with two immiscible fluids : shear stress action}, journal = {Numerical Heat Transfer}, volume = {62}, year = {2012}, month = {2012}, chapter = {605}, author = {OUESLATI, F.S. and BENNACER, R. and SAMMOUDA, H. and El-GANAOUI, M.} } @article {1278, title = {Analytical computation of transient heat transfer and macro-constriction resistance applied to thermal spraying processes}, journal = {Comptes Rendus M{\'e}canique}, volume = {340}, year = {2012}, month = {2012}, chapter = {536}, author = {N. LARAQI and M. EL-GANAOUI} } @article {1275, title = {On the aptitude of the lattice Blotzmann approach for the treatment of the transient heat transfer with crack resistance}, journal = {Comptes Rendus M{\'e}canique}, volume = {340}, year = {2012}, month = {2012}, chapter = {518}, author = {El-GANAOUI, M. and ADDAKIRI, S. and SEMMA, E.} } @article {583, title = {Effect of the pre-treatment severity on the antioxidant properties of ethanol organosolv Miscanthus x giganteus lignin}, journal = {Natural Resources}, volume = {3}, year = {2012}, month = {2012}, chapter = {29-34}, author = {R. ELHAGE and D. PERRIN and N. BROSSE} } @article {1277, title = {Effect of thermal contact resistance on alumina molten particle impacting onto a metal substrate.}, journal = {Defect and Diffusion forum}, volume = {326-328}, year = {2012}, month = {2012}, chapter = {482}, author = {S. OUKACH and B. PATEYRON and H. HAMDI and M. EL-GANAOUI} } @article {584, title = {Fluidisation de particules de bois en lit mixte~: faisabilit{\'e} et contr{\^o}le du proc{\'e}d{\'e}}, journal = {Mechanics \& Industry}, volume = {13}, year = {2012}, month = {2012}, chapter = {69-76}, author = {J.L. TANGUIER and R. Benelmir and M. EL-GANAOUI} } @article {1273, title = {A lattice Boltzman based investigation of powder in-flight characteristics during APS process, Part I : Modelling and Validation}, journal = {Progress in Computational Fluid Dynamics}, volume = {12}, year = {2012}, month = {2012}, chapter = {270}, author = {DJEBALI, R. and PATEYRON, B. and El-GANAOUI, M.} } @article {1150, title = {Modification of tannin based rigid foams using oligomers of a hyperbranched poly(amine-ester).}, journal = {J. Polymer research}, year = {2012}, month = {2012}, author = {X. LI and H. ESSAWY and A. PIZZI and L. DELMOTTE and K. RODE and D. LE NOUEN and V. FIERRO and A. CELZARD} } @article {1269, title = {Numerical simulation and analysis of flow in resin transfer molding process}, journal = {Fluid Dynamics \& Materials Processing}, volume = {8}, year = {2012}, month = {2012}, chapter = {277}, author = {SAAD, A. and ECHCHELH, A. and HATTABI, M. and El-GANAOUI, M.} } @article {1270, title = {Numerical simulation of thickness variation effect on resin transfer molding process}, journal = {Polymer Composites}, volume = {33}, year = {2012}, month = {2012}, chapter = {10}, author = {SAAD, A. and ECHCHELH, A. and HATTABI, M. and El-GANAOUI, M.} } @article {1272, title = {Prandtl number signature on flow Patterns of electrically conducting fluid in square enclosure.}, journal = {CMES: Computer Modeling in Engineering \& Sciences}, volume = {8}, year = {2012}, month = {2012}, chapter = {293}, author = {DJEBALI, R. and El-GANAOUI, M. and PATEYRON, B.} } @article {562, title = {Wood peeling process monitoring: a comparison of signal processing method to estimate veneer average lathe check frequency}, journal = {European Journal of Wood and Wood Products}, volume = {70}, year = {2012}, month = {2012}, chapter = {253-261}, author = {L-E. DENAUD and L. BL{\'E}RON and F. EYMA and R. MARCHAL} } @article {730, title = {Assessment and computational improvement of thermal lattice Boltzmann models based Benchmark computations.}, journal = {CMES: Computer Modeling in Engineering \& Science}, volume = {71}, year = {2011}, month = {2011}, chapter = {179-202}, author = {R. DJEBALI and M. EL-GANAOUI} } @article {709, title = {Extraction, characterization and utilization of Organosolv Miscanthus lignin for the conception of environmentally friendly mixed tannin/lignin wood resins}, journal = {Journal of Adhesion Science and Technology}, volume = {25}, year = {2011}, month = {2011}, chapter = {1549-1560}, author = {ELHAGE, R. and BROSSE, N. and NAVARRETE, P and PIZZI, A} } @article {1421, title = {Extraction de la lignine de Miscanthus x Giganteus pour la production d{\textquoteright}adh{\'e}sifs pour le mat{\'e}riau bois,}, journal = {Materiaux \& Techniques }, volume = {99}, year = {2011}, chapter = {463-469}, author = {EL-HAGE, R and NAVARRETE, P. and PIZZI, A. and BROSSE, N.} } @article {726, title = {A fast computational model to the simulation of non-isothermal mold filling process in resin transfer molding}, journal = { Polymer composites}, volume = {32}, year = {2011}, month = {2011}, chapter = {857-868}, author = {S.A. ECHCHELH and M. HATTABI and M. ELGANAOUI} } @article {727, title = {An improved computational method for non isothermal resin transfer moulding simulation}, journal = {Thermal Science}, volume = {15}, year = {2011}, month = {2011}, chapter = {275-289}, author = {S.A. ECHCHELH and M. HATTABI and M. EL-GANAOUI} } @article {729, title = {Improvement of a flow tracking method applied to resin transfer moulding simulation}, journal = {Phys. Chem. News}, volume = {57}, year = {2011}, month = {2011}, chapter = {85-94}, author = {S.A. ECHCHELH and M. HATTABI and M. EL-GANAOUI} } @article {1429, title = {Limitation of XPS for analysis of wood species containing high amounts of lipophilic extractives}, journal = {Wood Sci. Technol.}, volume = {45}, year = {2011}, chapter = {369-382}, author = {NGUILA-INARI, G. and PETRISSANS, M. and DUMARCAY, S. and LAMBERT, J. and EHRHARDT, J.J. and {\v S}ERNEK, M. and GERARDIN, P.} } @article {716, title = {Limitation of XPS for analysis of wood species containing high amounts of lipophilic extractives}, journal = { Wood Science and Technology}, volume = {45}, year = {2011}, month = {2011}, chapter = {369-382}, author = {NGUILA-INARI, G. and PETRISSANS, M. and DUMARCAY, S. and LAMBERT, J. and EHRHARDT, J.J. and GERARDIN, P. and M. SERNEK} } @article {719, title = {New type of anhydrous organic electrolyte based on carboxylic acid functional triazole as model system}, journal = {Synthetic Metals}, volume = {161}, year = {2011}, month = {2011}, chapter = {665-669}, author = {TURK, M. and COSGUN, S. and {\"U}N{\"U}G{\"U}RELIK, S. and ERDEMI, H. and GERARDIN-CHARBONNIER, C. and BOZKURT, A.} } @article {728, title = {Numerical study for the effect of the srength and the direction of a static magnetic field on the transient double-diffusive flow in liquid phase during an alloy solidification}, journal = {Defect and Diffusion}, volume = {297-301}, year = {2011}, month = {2011}, chapter = {97-104}, author = {F. MECHIGHEL and B. PATEYRON and M. KADJA and M. ELGANAOUI and S. DOST} } @article {710, title = {Removal of Cu2+ from aqueous solutions by adsorption on chemically modified cellulosic supports.}, journal = {Particulate Science and Technology}, volume = {29}, year = {2011}, month = {2011}, chapter = {320-332}, author = {ELBARIJI, S. and PETRISSANS, A. and ELAMINE, M. and OUZAOUIT, K. and KABLI, H. and ALBOURINE, A. and GERARDIN, P.} } @article {1419, title = {Removal of Cu2+ from aqueous solutions by adsorption on chemically modified cellulosic supports}, journal = {Science and Technology}, volume = {29}, year = {2011}, chapter = {320-332}, author = {ELBARIJI, S. and PETRISSANS, A. and ELAMINE, M. and OUZAOUIT, K. and KABLI, H. and ALBOURINE, A. and GERARDIN, P.} } @article {1418, title = {A Screening Study of Natural Color of Wood from Different Geographical Regions}, journal = {Research Journal of Forestry}, volume = {5}, year = {2011}, chapter = {162-168}, author = {EL-BAKALI, S. and YAGI, S. and MERLIN, A. and DEGLISE, X.} } @article {731, title = {Simulation and modeling of turbulent plasma jet based on axisymetric LBGK model}, journal = {Defect and Diffusion Forum}, volume = {312-315}, year = {2011}, month = {2011}, chapter = {1167-1171}, author = {R. DJEBALI and M. EL-GANAOUI and B. PATEYRON and H. SAMMOUDA} } @article {1229, title = {Study of Natural Colour of wood form different geographical regions}, journal = {Research Journal of Forestry}, volume = {5}, year = {2011}, month = {2011}, chapter = {162}, author = {I. EL-BAKALI and S. YAGI and A. MERLIN and X. DEGLISE} } @article {734, title = {Dilute Sulphuric Acid and Ethanol Organosolv Pretreatment of Miscanthus x Giganteus}, journal = {Cellulose Chemistry and Technology}, volume = {44}, year = {2010}, month = {2010}, chapter = {71-78}, author = {BROSSE, N. and ELHAGE, R. and SANNIGRAHI, P. and RAGAUSKAS, A.} } @article {740, title = {Effect of Autohydrolysis of Miscanthus x giganteus on Lignin Structure and Organosolv Delignification.}, journal = { Bioressource Technology}, volume = {101}, year = {2010}, month = {2010}, chapter = {9321-9329}, author = {ELHAGE, R. and CHRUSCIEL, L. and DESHARNAIS, L. and BROSSE, N.} } @article {737, title = {Proton conductivity properties of acid doped fluoroalkylated 1,2,3-triazole.}, journal = {Journal of Fluorine Chemistry}, volume = {131}, year = {2010}, month = {2010}, chapter = {776-779}, author = {COSGUN, S. and {\c C}ELIK, S.{\"U}. and {\"O}ZDEN, S. and T{\"U}YS{\"U}Z, S. and BOZKURT, A. and GERARDIN-CHARBONNIER, C.} } @article {742, title = {Regulation of adhesion behavior of murine macrophage using supported lipid membranes displaying tunable mannose domains.}, journal = {Journal of Physics Condensed Matter}, volume = {22}, year = {2010}, month = {2010}, author = {KAINDL, T. and OELKE, J. and PASC, A. and KAUFMANN, S. and KONOVALOV, O.V. and FUNARI, S.S. and ENGEL, U. and TANAKA, M.} } @article {843, title = {Characterization of milled wood lignin and ethanol organosolv lignin from Miscanthus}, journal = {Polymer Degradation and Stability}, volume = {94}, year = {2009}, month = {2009}, chapter = {1632-1638}, author = {ELHAGE, R. and BROSSE, N. and CHRUSCIEL, L. and SANCHEZ, C. and SANNIGRAHI, P. and RAGAUSKAS, A.} } @article {838, title = {Influence of heat treatment on antioxidant properties and colour stability of beech and spruce wood and their extractives}, journal = {Wood science and technology}, volume = {43}, year = {2009}, month = {2009}, chapter = {69-83}, author = {AHAJI, A. and DIOUF, P.N. and ALOUI, F. and ELBAKALI, I. and PERRIN, D. and MERLIN, A. and GEORGE, B.} } @article {924, title = {Bonding performance of heat-treated wood with structural adhesives}, journal = {Holz als Roh- und Werkstoff}, volume = {66}, year = {2008}, month = {2008}, chapter = {173-180}, author = {{\v S}ERNEK, M. and BOONSTRA, M. and PIZZI, A. and DESPRES, A. and GERARDIN, P.} } @article {949, title = {Enzymatic acylation of flavonoids: Effect of the nature of the substrate, origin of lipase, and operating conditions on conversion yield and regioselectivity}, journal = {J. 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