@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 {1878, title = { Exergetic sustainability and economic analysis of hybrid solar-biomass dryer integrated with copper tubing as heat exchanger }, journal = {HELIYON}, volume = {6}, year = {2020}, abstract = {

The aim of this study is to present a new hybrid solar-biomass dryer and carry out thermal analysis based on energy and exergo-sustainability analysis considering all the available exergy stream of solar radiation, air stream through the collector, and exergy of the moisture in the product. The research also presented the environmental impact and economic analysis of using the dryer. Performance evaluations show that at collector efficiency of 20.81\%-21.89 \%, the developed solar dryers can save between 10-21hrs of drying time in drying 5 mm thick plantain slices to 15 \% moisture content from initial moisture content of 66 \% w.b when compared to drying under the open sun. The improvement potential ranged from 0.036 to 20.6W while the waste exergy ratios and sustainability index ranged from 0.38-0.55 and 2.3-6.11 respectively. Application of the solar dryers can save between 44-3074 of CO2 entering the atmosphere per year while 2.94 to 205.43$ could also be saved at 10-100\% rate of usage when compared to diesel fired dryer. The total energy consumption for drying ranges between 5.52 and 35.47 MJ, while the specific energy consumption ranged from 4.3 to 26.2 kWh/kg. The exergy efficiency ranges from 5.6-95.13 \% during the sunshine hours.

}, author = {M.C. NDUKWU and M. SIMO-TAGNE and F.I. ABAM and O.S. ONWUKA and S. PRINCE and L. BENNAMOUN} } @article {1856, title = { Mining the Biosynthetic Potential for Specialized Metabolism of a Streptomyces Soil Community }, journal = { ANTIBIOTICS-BASEL }, volume = {9}, year = {2020}, pages = {271}, abstract = {

The diversity and distribution of specialized metabolite gene clusters within a community of bacteria living in the same soil habitat are poorly documented. Here we analyzed the genomes of 8 Streptomyces isolated at micro-scale from a forest soil that belong to the same species or to different species. The results reveal high levels of diversity, with a total of 261 biosynthesis gene clusters (BGCs) encoding metabolites such as terpenes, polyketides (PKs), non-ribosomal peptides (NRPs) and ribosomally synthesized and post-translationally modified peptides (RiPPs) with potential bioactivities. A significant part of these BGCs (n = 53) were unique to only one strain when only 5 were common to all strains. The metabolites belong to very diverse chemical families and revealed that a large diversity of metabolites can potentially be produced in the community. Although that analysis of the global metabolome using GC-MS revealed that most of the metabolites were shared between the strains, they exhibited a specific metabolic pattern. We also observed that the presence of these accessory pathways might result from frequent loss and gain of genes (horizontal transfer), showing that the potential of metabolite production is a dynamic phenomenon in the community. Sampling Streptomyces at the community level constitutes a good frame to discover new biosynthetic pathways and it appears as a promising reservoir for the discovery of new bioactive compounds.

}, url = {https://hal.univ-lorraine.fr/hal-02619232}, author = {M. NICAULT and A.R. TIDJANI and A. GAUTHIER and S. DUMARCAY and E. GELHAYE and C. BONTEMPS and P. LEBLOND} } @article {1862, title = { Numerical analysis and validation of a natural convection mix-mode solar dryer for drying red chilli under variable conditions }, journal = { RENEWABLE ENERGY }, volume = {151}, year = {2020}, pages = {659-673}, abstract = {

The objective of this paper is to model a natural convection mix-mode solar dryer (NCMMSD) for drying agricultural products in an environment with short sunshine duration. The solar dryer was used to dry red chilli and was operating under the climate of the coastal area of South Eastern Nigeria characterized by low solar radiation intensity with a short duration of sunshine hours. The model took into consideration the thermophysical properties of the drying air and dried red chilli. The simultaneous heat and mass transfer equations were solved using the fourth-order Runge-Kutha method. The numerical solution allows for the determination of temperature and relative humidity of drying air at different points within the dryer as well as the moisture profile of the dried product. The experimental values of moisture ratios, temperature, and relative humidity during the mix-mode solar drying process with and without NaCl were used to validate the proposed model. Numerical simulation results were in close agreement with experimental results. The present model can serve as good reference bases to explain the drying phenomenon of mix-mode solar drying of other agricultural products when necessary thermophysical properties of these products are known. Using this model, the potential of mitigating gross fossil (coal) CO2 in Africa is annually estimated to 1280148 tons of CO2.

}, url = {https://hal.archives-ouvertes.fr/hal-02521198/}, author = {M. SIMO-TAGNE and M.C. NDUKWU and A. ZOULALIAN and L. BENNAMOUN and F. KIFANI-SAHBAN and Y. ROGAUME} } @article {1812, title = { African tree bark exudate extracts as biohardeners of fully biosourced thermoset tannin adhesives for wood panels }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {132}, year = {2019}, pages = {253-268}, abstract = {

A totally \"bio\" hardener derived from the exudate extract of the African trees Vachellia nilotica and Senegalia senegal was investigated. It hardened a maritime pine tannin resin without any obvious presence of an aldehyde thus obtaining a completely \"bio\" adhesive for wood panels. MALDI-ToF and CP MAS C-13 NMR analysis indicated that the hardeners cross-linking species was 2,5-dihydroxymethyl furan linked onto carbohydrate chains. The hydroxymethyl furan moieties reacted both after detachment from the carbohydrate chains but also with carbohydrate chains still attached. The carbohydrates too were then involved as part of the binder. The gel times were slower than what was obtainable with paraformaldehyde but sufficiently fast to possibly be of industrial significance.

}, author = {B. NDIWE and A. PIZZI and B. TIBI and R. DANWE and N. KONAI and S. AMIROU} } @article {1823, title = { Improvement of Modified Wood Properties with Addition of Chestnut Tannins in Lactic Acid-Based Treatments }, journal = { JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY }, volume = {39}, year = {2019}, pages = {124-135}, abstract = {

Wood modification treatments based on lactic acid oligomers (OLA) and monomers (LA) enhance beech dimensional stability (up to 70\%) and biological resistance (less than 3\% weight loss according to EN113). Chestnut wood tannins natural biological activity might improve the modified wood durability with milder curing conditions. Treatment consisted of the impregnation of monomers or oligomers mixtures followed by curing (140 degrees C/160 degrees C for 48h). Tannins addition is almost inconsequential with oligomeric-based treatment but improved the monomeric-based treatment. In this case, modified wood biological resistance and product persistence were increased. OLA impregnated wood cured at 160 degrees C was always the best performing treatment regarding dimensional stability and durability, but the addition of tannins in LA systems conferred promising properties to wood allowing simplification of the modification process.

}, author = {C. GROSSE and M. NOEL and M.F. THEVENON and P. GERARDIN} } @article {1786, title = { Modelling and numerical simulation of hygrothermal transfer through a building wall for locations subjected to outdoor conditions in Sub-Saharan Africa }, journal = { JOURNAL OF BUILDING ENGINEERING }, volume = {26}, year = {2019}, abstract = {

In the building sector, the improvement of the heat and mass insulation of the walls can reduce the values of the global energy demand and the CO2 emission. A coupled one-dimensional heat and mass transfer model through a building wall was proposed in this study. The governing equations integrate the influences of Dufour and Soret effects and are numerically resolved using FORTRAN 90 and finite difference method in Crank-Nicolson scheme. Gauss-Seidel relaxation iteration method is used in order to generate the numerical solutions. The accuracy of the model was evaluated with experimental data on wooden wall and concrete wall from literature. A very satisfactory agreement is noted between the numerical predictions, experimental observations and physical phenomenon obtained. The model was further used to simulate the hygrothermal transfer through five tropical woods used as building walls in sub-Saharan African region after integration of outdoor conditions. These five woods have densities ranging from 430 to 800 kg/m(3) and the conditions of the interior air were fixed to maintain a comfortable state for the occupants. Twelve towns located within latitudes 4.33 degrees S to 12.37 degrees N in Sub - Saharan Africa were used to discuss the results given by the model. At the end, influences of anatomical direction, tropical wood types, wall thickness, latitudes of the locations and solar radiation on evolutions of temperature and moisture content in the wall are studied. Our results showed that these parameters have significant effects on temperature and moisture content propagation within the wall. Using a wooden wall of 5 cm thickness, it is possible to reduce significantly the effect of the exterior heat.

}, url = {https://hal.archives-ouvertes.fr/hal-02521709/}, author = {M. SIMO-TAGNE and M.C. NDUKWU and Y. ROGAUME} } @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 {1784, title = { Optimizing Chemical Wood Modification with Oligomeric Lactic Acid by Screening of Processing Conditions }, journal = { JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY }, volume = {39}, year = {2019}, pages = {385-398}, abstract = {

When exposed to moisture, wood undergoes swelling and is susceptible to fungal degradation. Chemical modification via oligomeric lactic acid (OLA) treatment has been found to be a promising environmentally friendly solution to this disadvantage. In this study, wood was impregnated with OLA and then variously heat treated to polymerize the OLA in situ. The effect of curing temperature and time on OLA polymerization has been determined chemically. Dimensional stability was examined by water immersion and hygroscopicity measurements and biological decay resistance also evaluated. OLA impregnation followed by heat treatment enhanced wood properties. OLA cure at 160 degrees C for 48 h resulted in treated wood with greater dimensional stability and biological resistance.

}, author = {C. GROSSE and W.J. GRIGSBY and M. NOEL and A. TREU and M.F. THEVENON and P. GERARDIN} } @article {1787, title = { Particleboard bonded with bio-hardeners of tannin adhesives }, journal = { EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS }, volume = {77}, year = {2019}, pages = {1221-1223}, abstract = {

A totally bio hardener acting with an unusual and new hardening mechanism derived from the exudate extract of the African trees Vachellia nilotica and Senegalia senegal was used to harden a maritime pine tannin resin without any aldehyde obtaining a completely bio adhesive for interior particleboard. For a density and pH given, the internal bond (IB) values increased simultaneously with the rate of bio-hardener. The optimal dry IB values (0.63 MPa) were obtained with 15\% of bio-hardener solids. The low IB value (0.38 MPa) was obtained with 6\% of bio-hardener solids. The IB of panels manufactured with UF as hardener are slightly higher than those using the above bio-hardeners.

}, author = {B. NDIWE and A. PIZZI and R. DANWE and B. TIBI and N. KONAI and S. AMIROU} } @article {1744, title = { Confinement device to assess dynamic crushability of wood material }, journal = { PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE }, volume = {232}, year = {2018}, pages = {1418-1432}, abstract = {

Cellular materials such as wood are widely and advantageously used as shock absorbers in various transport applications. The design and manufacturing of structures made of these materials require the knowledge of their dynamic compressive properties at various strain rates and stress states. Therefore, it is challenging to conduct dynamic multiaxial stress state experiments and especially on split-Hopkinson pressure bar apparatus where stress hardening increases as a function of velocity. This paper presents the so-called verification and validation methodology for confining solutions dedicated to impact on viscoelastic split-Hopkinson pressure bar system with large diameter bars. The method is a hybrid approach combining finite element analysis and an original experimental validation. Based on finite element results, particular attention is given to the mass, the material and the geometry to minimize the confining device influence on the propagation of elastic waves and thus on the material response of the tested specimens. It is essential to avoid spurious reflected waves at the new interfaces of the system in order to ensure the validity of the experimentation. The numerically predicted solutions are experimentally validated and preliminary results in the context of dynamic loadings using wood material are presented.

}, author = {J. WOUTS and G. HAUGOU and M. OUDJENE and H. NACEUR and D. COUTELLIER} } @article {1742, title = { Influence of Water and Humidity on Wood Modification with Lactic Acid }, journal = { JOURNAL OF RENEWABLE MATERIALS }, volume = {6}, year = {2018}, pages = {259-269}, abstract = {

Impregnation of dry wood with pure lactic acid oligomers (OLAs) followed by heat treatment confers promising properties to wood because of OLA\&$\#$39;s good diffusion, in-situ polymerization and persistence in cell walls. Treatment provides drastic reduction of the equilibrium moisture content, high dimensional stability and good durability. The presence of water during treatment has been evaluated. Curing of OLA impregnated dry wood in humid atmosphere leads to a strong and global degradation of the material. OLA treatment of wet wood only impacts the water leaching rate negatively. Treatment of dry wood with OLA diluted in water additionally decreases the biological resistance and is not efficient for decreasing hygroscopicity. Treatment of dry wood with lactic acid solution leads to a lower polymerization level but confers good properties.

}, author = {C. GROSSE and M. NOEL and M.F. THEVENON and L. RAUTKARI and P. GERARDIN} } @article {1715, title = { Inhibition of fungi with wood extractives and natural durability of five Cameroonian wood species }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {123}, year = {2018}, pages = {183-191}, abstract = {

The natural durability of five Cameroonians wood samples was evaluated using the European standard EN 350-1 with a slight modification. The capacity of extracts to inhibit the fungal growth was evaluated at different concentrations with propiconazole (a commercial fungicide for wood) as standard. Scanning Electron Microscopy (SEM) of wood blocks was carried out before and after extraction in different solvents. Unextracted and extracted wood blocks were exposed to fungal attack, with beech as a reference wood. Results showed that mass losses of non-extracted samples ranged from 0.1 to 59\% and those of extracted samples from 3\% to 40\%. Before extraction, all wood samples under study were classified as very resistant to fungi attack (class 1) with respect to the standard. After extraction, some of the wood samples became vulnerable to fungal attack. Movingui, padouk, and tali became less resistant to fungi attack (class 3). The SEM of wood revealed that the extractives were removed from the fibres. The effect of extractives on fungal growth showed that extracts weakly inhibited fungal growth up to concentrations of 250 mu g/mL but extracts of tali and movingui totally inhibited fungal growth at a concentration of 500 mu g/mL.

}, url = {https://hal.archives-ouvertes.fr/hal-01972727}, author = {J.B.S. TCHINDA and M.K. NDIKONTAR and A.D.F. BELINGA and S. MOUNGUENGUI and J.M. NJANKOUO and S. DUMARCAY and P. GERARDIN} } @article {1658, title = { Chemical composition of some plantation wood species (Eucalyptus saligna, Cupressus lusitanica and Eucalyptus paniculata) and assessment of compatibility with plaster }, journal = { JOURNAL OF THE INDIAN ACADEMY OF WOOD SCIENCE }, volume = {14}, year = {2017}, pages = {146-153}, abstract = {

The aim of this work was to evaluate the chemical composition of some plantation wood and the assessment of their compatibility with plaster. A quantitative analysis of the chemical composition each of the species (Eucalyptus saligna, Cupressus lusitanica and Eucalyptus paniculata) was carried out, followed by chemical compatibility evaluation using different types of wood particles. The quantitative analyses were carried out on wood powder of size between 0.27 and 0.30 mm. The results obtained were 2.4, 3.4 and 1.6\% for ethanol-benzene extract (E-AB ); 2.6, 3.2 and 2.4\% for hot water extract (E-E); 12.4, 21.6 and 12.1\% for 1\% sodium hydroxide extract (E-s); 48.6, 48.4 and 40.4\% for cellulose content (C); 34.8, 34.3 and 36.3\% for lignin content (L); then 0.1, 0.6, 0.3\% for ash content (C-E) respectively of E. saligna, C. lusitanica and E. paniculata. Chemical compatibility C-A was measured from hydration temperature curves as a function of time using the area method. The results showed that compatibility C-A decreased from 100 to 68\% as the wood content in the composite increased up to 15\% for all species and types of particles used. At this minimum value, the species was still considered as highly compatible in accordance with literature. Although compatibility is good, it decreased in the order E. paniculata followed by E. saligna and then C. lusitanica, the least compatible due to the inhibiting action of extractives.

}, author = {D.V.C. YOUMSSI and Y.D.M. BAMPEL and J.M. NJANKOUO and J.B.S. TCHINDA and M.K. NDIKONTAR} } @article {1695, title = { The effect of soda bagasse lignin modified by ionic liquids on properties of the urea-formaldehyde resin as a wood adhesive }, journal = { JOURNAL OF ADHESION }, volume = {93}, year = {2017}, pages = {914-925}, abstract = {

The aim of this research was to investigate the influence of lignin modified by ionic liquids on physical and mechanical properties of plywood panels bonded with the urea-formaldehyde (UF) resin. For this purpose, soda bagasse lignin was modified by the 1-ethyl-3-methylimidazolium acetate ([Emim][OAc]) ionic liquid and then the various contents of unmodified and modified lignins (10, 15, and 20\%) were added at pH=7 instead of second urea during the UF resin synthesis. The physicochemical properties of the prepared resins as well as the water absorption, shear strength, and formaldehyde emission of the plywood panels made with these adhesives were measured according to standard methods. According to Fourier Transform Infrared (FTIR) Spectrometry, by treatment of lignin, the C=O, C-C, and C-H bonds decrease while the content of the C-N bond dramatically increases. Based on the finding of this research, the performance of soda bagasse lignin in UF resins dramatically improves by modification by ILs; as the resins with modified lignin yielded lower formaldehyde emission and water absorption when compared to those made from unmodified lignin and commercial UF adhesives, respectively. The shear strength as well as wood failure percentages are lower for the panels produced with modified lignin than for the panels produced with UF resins alone.

}, url = {https://hal.univ-lorraine.fr/hal-01599537}, author = {H. YOUNESI-KORDKHEILI and A. PIZZI and A. HONARBAKHSH-RAOUF and F. NEMATI} } @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 {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 {1654, title = { Reduction of Formaldehyde Emission from Particleboard by Phenolated Kraft Lignin }, journal = { JOURNAL OF ADHESION }, volume = {92}, year = {2016}, pages = {485-497}, abstract = {

The aim of this study was the reduction of formaldehyde emission from particleboard by phenolated Kraft lignin. For this purpose, the lignin was extracted from black liquor and then modified by phenolation. During the urea formaldehyde (UF) resin synthesis different proportions of unmodified and phenolated Kraft lignins (10\%, 15\%, and 20\%) were added at pH = 7 instead of the second urea. Physicochemical properties and structural changes of resins so prepared, as well as the internal bond (IB) strength and formaldehyde emission associated with the panels bonded with them were measured according to standard methods. The Fourier transform infrared (FTIR) analysis of lignin indicated that the content of O-H bonds increased in phenolated lignin while the aliphatic ethers C-O bonds decreased markedly in the modified lignin. Since both synthesis of UF resins and lignin phenolation are carried out under acid conditions, phenolation is an interesting way of modifying lignin for use in wood adhesive. The panels bonded with these resins showed significantly lower formaldehyde emission compared to commercial UF adhesives. The UF resin with 20\% phenolated lignin exhibited less formaldehyde release without significant differences in internal bond strength and physicochemical properties compared to an unmodified UF resin. XRD analysis results indicated that addition of phenolated lignin decreased the crystallinity of the hardened UF resins.

}, url = {https://hal.archives-ouvertes.fr/hal-01599783}, author = {H. YOUNESI-KORDKHEILI and A. PIZZI and G. NIYATZADE} } @article {1628, title = { Total phenolic and lignin contents, phytochemical screening, antioxidant and fungal inhibition properties of the heartwood extractives of ten Congo Basin tree species }, journal = { ANNALS OF FOREST SCIENCE }, volume = {73}, year = {2016}, pages = {287-296}, abstract = {

Content and type of extractives vary considerably among woody species in the Congo Basin tropical forest. They influence the natural durability of wood with respect to fungal and insect degradation. Species containing higher amounts of extractives and Klason lignin were generally less susceptible to fungal colonization. Phenolic extractives with large anti-fungal and high antioxidant activities were the main chemical family of compounds extracted from the tested species, which suggests a potential chemical valorization of these extractives.

Several woody species from the Congo Basin are known for their natural durability, but the causes of this natural durability are not always fully elucidated. This is particularly the case for the resistance to white rotting fungi decay.

The chemical composition as well as the antioxidant activity of the heartwood extractives of several species were quantified and correlated to the ability of different fungi to colonize wood sawdusts in order to better understand their decay resistance.

The chemical screening of extracts was conducted using colorimetric methods. The quantity of lignin, extracts and total phenolic compounds, as well as antioxidant activities were determined. Extracted and unextracted heartwood sawdusts were exposed to two white rot fungi to assess the effect of extractives on their colonization.

Extractives and lignin contents ranged from 2.7 to 16.0 \% and from 26.5 to 35.9 \%, respectively. Antioxidant activity was directly connected to total phenolic contents. The phytochemical screening revealed the presence of different chemical groups in all extracts. Resistance to fungi was correlated to the amount of extractives and in most cases to the lignin content.

Phenolic compounds associated with antioxidant activities influenced the natural resistance of heartwood.

}, url = {https://hal.univ-lorraine.fr/LERMAB-UL/hal-01532273}, author = {S. MOUNGUENGUI and J.B.S. TCHINDA and M.K. NDIKONTAR and S. DUMARCAY and C. ATTEKE and D. PERRIN and E. GELHAYE and P. GERARDIN} } @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 {1253, title = {Lophira Lanceolata seed oil extraction method (ancestral or modern) modifies the properties of the oil}, journal = {Ind. Crops \& Prod.}, year = {2015}, month = {2015}, author = {G. NONVIHO and C. PARIS and L. MUNIGLIA and D. SOHOUNHLOUE and N. BROSSE} } @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 {1412, title = {Reduction Formaldehyde Emission from Particleboard by Phenolated Kraft Lignin}, journal = {J. Adhesion. }, volume = {92(6)}, year = {2015}, pages = {485-497}, author = {YOUNESI-KORDKHEILI, H. and PIZZI, A. and NYIATZADE, G.} } @article {1163, title = {An aqueous extract of Limoniastrum guyonianum gall induces anti-tumor effect in melanoma-injected mice via modulation of the immune response. }, journal = {Food and Chemical Toxicology}, year = {2014}, month = {04/2014}, author = {M. KRIFA and I. SKANDRANI and A. PIZZI and N. NASR and Z. GHEDIRA and N. MUSTAPHA and K. GHEDIRA and L. CHEKIR-GHEDIRA} } @article {1246, title = {Composition of Lophira lanceolata and Carapa procera seed oils. }, journal = {Research Journal of Chemical Sciences}, volume = {4}, year = {2014}, month = {2014}, chapter = {57}, author = {G. NONVIHO and C. PARIS and L. MUNIGLIA and P. SESSOU and P. AGBANGNAN and N. BROSSE and D. SOHOUNLOUE} } @article {997, title = {Discoloration and biodegradation of two dyes by white-rot fungi Perreniporia tephropora MUCL 47500 isolated in Gabon}, journal = {Int.J.Curr.Microbiol.App.Sci}, volume = {3}, year = {2014}, month = {2014}, chapter = {731-741}, author = {MOUNGUENGUI, S. and ATTEKE, C. and SAHA-TCHINDA, J-B. and NDIKONTAR, M-K. and DUMARCAY, S. and GERARDIN, P.} } @article {1193, title = {Improving urea Formaldehyde Resin properties by glyoxalated Soda Bagasse lignin.}, journal = {Eur. J. Wood \& Wood products}, year = {2014}, month = {2014}, author = {H. YOUNESI and S.K. NAJAFI and R. BERHOOZ and A. PIZZI} } @article {1013, title = {Study of the feasibility of a natural dye on cellulosic textile supports by red padouk (Pterocarpus soyauxii) and yellow movingui (Distemonanthus benthamianus) extracts. }, journal = {Industrial Crops and Products}, volume = {60}, year = {2014}, month = {2014}, chapter = {291-297}, author = {SAHA-TCHINDA, J-B. and PETRISSANS, A. and MOLINA, S. and NDIKONTAR, M-K. and MOUGUENGUI, S. and DUMARCAY, S. and GERARDIN, P.} } @article {621, title = { Antioxidant activities, total phenolic contents and chemical compositions of extracts from four Cameroonian woods: padouk (Pterocarpus soyauxii Taubb), tali (Erythrophleum suaveolens), moabi (Baillonella toxisperma), and movingui }, journal = {Industrial Crops and Products}, volume = {41}, year = {2013}, month = {2013}, chapter = {71-77}, author = {J.B. T SAHA and D. ABIA and S. DUMARCAY and M-K. NDIKONTAR and P. GERARDIN and N. J. NGAMVENG and D. 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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 {663, title = {Fabrication and mechanical analysis of mimosa tannin and commercial flax fibers biocomposites. }, journal = {Journal of Adhesion Science and Technology}, volume = {27}, year = {2013}, month = {2013}, chapter = {2204-2218}, author = {A. SAUGET and A. NICOLLIN and A. PIZZI} } @article {687, title = {Fast pressing composite using tannin-furfuryl alcohol resin and vegetal fibers reinforcement}, journal = { J.Renewable Mat.}, volume = {1}, year = {2013}, month = {2013}, chapter = {311-316}, author = {A. NICOLLIN and X. LI and P. GIRODS and A. PIZZI and Y. ROGAUME} } @article {616, title = {Formaldehyde and VOCs emissions from bio-particleboards}, journal = {Journal of Adhesion Science and Technology}, volume = {27}, year = {2013}, month = {2013}, chapter = {748-762}, author = {P. NAVARETTE and Z. KEBBI and F. MICHENOT and J. LEMONON and C. ROGAUME and E. MASSON and Y. ROGAUME and A. PIZZI} } @article {632, title = {Lightweight tannin foam/composites sandwich panels and the coldset tannin adhesive to assemble them}, journal = {Ind.Crops \& Prod}, volume = {43}, year = {2013}, month = {2013}, chapter = {255-260}, author = {X. ZHOU and A. PIZZI and A. SAUGET and A. NICOLLIN and X. LI and A. CELZARD and H. PASCH and K. RODE} } @article {675, title = {MALDI-TOF and 13C NMR analysis of a renewable resource additive {\textendash} Thermoplastic acetylated tannins}, journal = {Ind. Crops \& Prod.}, volume = {49}, year = {2013}, month = {2013}, chapter = {851-857}, author = {A. NICOLLIN and X. ZHOU and A. PIZZI and W.J. GRIGSBY and K. 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DELMOTTE} } @article {722, title = {An experimental study and a numerical simulation of the turbulent flow under the vortex finder of a cyclone separator.}, journal = { Journal of Applied Fluid Mechanics}, volume = {4}, year = {2011}, month = {2011}, chapter = {69-75}, author = {TALBI, K. and NEMOUCHI, Z. and DONNOT, A. and BELGHAR, N.} } @article {1420, title = {Extraction, characterization and utilization of organosolv Miscanthus lignin for the conception of resin for wood adhesives,}, journal = {Adh. Sci. 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