Materials Literature
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At present, there are no published data on catabolic pathways of N-heterocyclic compounds, in which all carbon atoms carry a substituent. We identified the genetic locus and characterized key reactions in the aerobic degradation of tetramethylpyrazine in Rhodococcus jostii strain TMP1. By comparing protein expression…
Abstract The cohesive laws (CLs) have been investigated by means of direct and inverse methods concerning wood bonded joints under pure mode I. The experimental results were obtained by tests with double cantilever beam. The direct method is based on the differentiation of the relation between strain energy release ra…
Undoped and Mn doped SnO 2 nanowires, nanobelts, and microplates have been grown by a thermal evaporation method that enables the morphology and the Mn content in the structures to be controlled. The structural and morphological characterization was carried out by scanning and transmission electron microscopy (SEM and…
Escherichia coli is used as a model organism for elucidation of menaquinone biosynthesis, for which a hydrolytic step from 1,4-dihydroxy-2-naphthoyl-coenzyme A (DHNA-CoA) to 1,4-dihydroxy-2-naphthoate is still unaccounted for. Recently, a hotdog fold thioesterase has been shown to catalyze this conversion in phylloqui…
Hybrid nanoparticles with multiple functions are of great interest in biomedical diagnostics, therapies, and theranostics but typically require complex multistep chemical synthesis. Here we demonstrate a general physical method to create multifunctional hybrid materials through aerosol-phase graphene encapsulation of…
A series of [H3O]+[LnL4]−·nH2O complexes (n = 1–3, Ln = Nd, (1), Sm (2), Eu (3), Tb (4); HL = 3-methyl-1-phenyl-4-formylpyrazole-5-one) were synthesized and characterized. The structures of the SmIII and EuIII complexes were investigated by X-ray diffraction. The isostructutal crystalls 2 and 3 consist the tetrakis [L…
A biodegradable fibrous tube was fabricated by electrospinning method using a combination of Poly(lactic-co-glycolic acid) (PLGA) and gelatin dissolved in trifluoroethanol (TFE). Different ratios of the two polymers (PLGA/Gelatin: 1/9, 3/7, 5/5) were used for electrospinning to determine the optimum condition appropri…
We describe here the facile synthesis (in two-steps) of green light emitting phenol polymer with an azomethine side group. For this purpose, hydroxy functionalized-Schiff base monomer , HPMBT , was obtained by condensation of 2,3,4-trihydroxybenzaldehyde with 2-aminophenol. Subsequent oxidation of the monomer in alkal…
A facile solution-phase route was developed to synthesize a family of monodisperse Cu2Ge(S(3-x)Se(x)) alloyed nanocrystals (NCs) with controlled composition across the entire range (0 ≤ x ≤ 3). The band gaps of the resultant NCs can be engineered by tuning the compositions with a nearly linear relationship between the…
We report the use of liquid crystal (LC)-in-water emulsions for the synthesis of either spherical or non-spherical particles with chemically distinct domains located at the poles of the particles. The approach involves the localization of solid colloids at topological defects that form predictably at surfaces of water…
Covalent or noncovalent linked polymers with stimuli-responsive properties have been well researched as a kind of advanced functional materials. However, little effort has been devoted to establishing a bridge for switching between covalent polymers and noncovalent polymers. Actually, such unitive system is promising…
A highly efficient nuclear transformation method was established for the pennate diatom Phaeodactylum tricornutum using an electroporation system that drives multi-sequence pulses to introduce foreign DNAs into the cells. By optimizing pulse conditions, the diatom cells can be transformed without removing rigid silica…
The problem of finding the elastic strains arising due to the converse flexoelectric effect is solved for a case of uniformly polarized ball of isotropic dielectric material. The strains occurs due to the fact that, as shown in a previous paper, in presence of flexoelectricity elastic boundary condition has non-classi…
The present research work is focused on the effect of activation procedure on the hydrogen absorption-desorption properties of new rare earth transition metal compound based on Sm(Co0.6Fe0.2Zr0.16B0.04)7.5 composition. Crystal structure and composition is always connected to the maximum capacity of the intermetallic h…
采用共沉淀法制备了Cu/Zn/ZrO2催化剂,并以稀土元素镨（Pr）为助剂添加不同含量对其进行改性。通过XRD、H2-TPR、CO2-TPD等表征手段考察了稀土助剂Pr2O3的含量对Cu/Zn/ZrO2催化剂结构的影响。在固定床连续流动反应装置上考察了5种助剂含量改性的Cu/Zn/ZrO2催化剂对CO2加氢合成甲醇反应的催化性能。结果表明：加入稀土助剂后,催化剂的表面碱性明显增强,有效地促进了活性组分的分散,稳定了催化剂的活性中心。当Pr2O3的含量为3%时,Cu/Zn/ZrO2催化剂催化活性最佳。
Matter in extreme conditions belongs to Warm Dense Matter regime which lays between dense plasma regime and condensed matter. This regime is still not well known, indeed it is very complex to generate such plasma in the laboratory to get experimental data and validate models. The goal of this thesis is to study electr…
Ce projet de recherche mené en collaboration avec le CTP (Centre Technique du papier) a eu comme objectif de mettre en place une stratégie de greffage de polymères sur des fibres de cellulose via Chimie Click dans l eau et dans des conditions douces et respectueuses de l environnement afin de conférer de nouvelles pro…
Modifications chimiques "Green" et innovantes de fibres de cellulose Ce projet de recherche mené en collaboration avec le CTP (Centre Technique du papier) a eu comme objectif de mettre en place une stratégie de greffage de polymères sur des fibres de cellulose via « Chimie Click » dans l’eau et dans des conditions dou…
Dans les années 2000, les matériaux de conversion sont apparus comme une alternative intéressante aux matériaux d'insertion actuellement utilisés dans les batteries Li-ion. Ils réagissent avec le lithium pour former une électrode constituée de nanoparticules métalliques encapsulées dans une matrice lithiée. Pour compr…
Cette thèse a été consacrée à la mise au point de deux systèmes d'administration destinés à la voie orale, pour deux molécules différentes.Dans la première partie, des microparticules (MPs) à base de xylane et d'Eudragit® S-100 ont été produites pour encapsuler l’acide 5-aminosalicylique et permettre son absorption au…