Materials Literature
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The high-pressure structures of magnesium (Mg) have been extensively explored through our newly developed particle swarm optimization algorithm on crystal structural prediction. Two structures with face-centered cubic (fcc) and simple hexagonal (sh) symmetries are discovered to be stable at 456−756 GPa and above 756 G…
Silicon nanowires (SiNWs), as a novel one-dimensional semiconducting nanomaterial, are attracting increasing interest in recent years. The synthesis of SiNWs with in situ grown silver nanoparticles (AgNPs) (SiNWs@AgNPs) is reported and the highly effective and long-term antibacterial activity of this novel nanostructu…
A facile and sustainable synthesis of hollow carbonaceous nanospheres is presented, offering a scalable and multifunctional route to the generation of useful nanocontainers, which critically possess the stability not offered by polymeric equivalents and functionality not afforded by other nanocarbons. Carbonization te…
The adsorption of neutral (poly)-aromatic, antiaromatic, and more generally π-conjugated systems on graphene is studied as a prototypical case of π−π stacking. To account for dispersive interactions, we compare the recent van der Waals density functional (vdw-DF) with three semiempirical corrections to density functio…
Different stoichiometric configurations of graphane and graphene fluoride are investigated within density-functional theory. Their structural and electronic properties are compared, and we indicate the similarities and differences among the various configurations. Large differences between graphane and graphene fluori…
The present study demonstrates an eco-friendly and low cost protocol for synthesis of silver nanoparticles using the cell-free filtrate of Aspergillus flavus NJP08 when supplied with aqueous silver (Ag+) ions. Identification of the fungal isolate was based on nuclear ribosomal DNA internal transcribed spacer (ITS) ide…
Metal nanocrystals with highly branched morphologies are an exciting new class of nanomaterials owing to their unique structures, physicochemical properties, and great potential as catalysts, sensing materials, and building blocks for nanoscale devices. Various strategies have recently been developed for the solution-…
On the basis of their unique electrical and mechanical properties, carbon nanotubes (CNTs) have attracted great attention in recent years. A diverse array of methods has been developed to modify CNTs and to assemble them into devices. On the basis of these innovations, many applications that include the use of CNTs ha…
CeO(2)/TiO(2) and CeO(2)-WO(3)/TiO(2) catalysts prepared by impregnation method assisted with ultrasonic energy were investigated on the selective catalytic reduction (SCR) of NO(x) (NO and NO(2)) by NH(3). The catalytic activity of 10% CeO(2)/TiO(2) (CeTi) was greatly enhanced by the addition of 6% WO(3) in the broad…
Ansatze der Systembiologie bieten durch die Nutzung genomweiter in silico Analysen in Verbindung mit molekulargenetischen Stammverbesserungen einen vollstandigeren Blick auf die L-Lysin Bildung. Ein kurzlich erstelltes genomweites metabolisches Modell von C. glutamicum (Kjeldsen 2009) wurde weiter optimiert und vervol…
Le contexte d étude est celui de la Compatibilité ÉlectroMagnétique (CEM). L objectif de la CEM est, comme son nom l indique, d assurer la compatibilité entre une source de perturbation électromagnétique et un système électronique victime. Or, la prédiction de ces niveaux de perturbation ne peut pas s effectuer à l ai…
Avec l’évolution rapide des techniques de nanofabrication et les besoins croissants d’intégration et d’utilisation à moindre cout énergétique, l’étude et la manipulation de résonances électromagnétiques d’objets de faibles dimensions représentent des enjeux cruciaux. Un des objectifs de ce travail de thèse a donc été…
Le choix de la filière SFR (Sodium Fast Reactor : Réacteurs à neutrons rapides refroidis par du sodium liquide), par la France conduit à la réalisation d’un prototype de quatrième génération nommé ASTRID. Le développement de ce type de réacteurs présente plusieurs défis, en particulier du point de vue de l’amélioratio…
As zeólitas têm recebido grande atenção acadêmica e industrial devido às suas características ácidas e estruturais. A estrutura da zeólita pode ser utilizada para conduzir uma reação catalítica na direção do produto desejado, evitando assim reações paralelas. Porém, essa mesma estrutura cria restrições difusivas com r…
Within the quick nano-fabrication techniques evolution and the increasing needs in low space and energy opto-electronic functions on-chip integration, studies and control of electromagnetic resonances of sub-micrometric objects are crucial issues. One aim of this work was then to improve our knowledge of the light-mat…
Chemistry poses many unique information technology challenges - one of the most important comes from the need to support its graphical language for chemical structures. A chemical structure editor plays the pivotal role of allowing a chemist to communicate with a cheminformatics back-end using this graphical language.
This volume of the "Journal of Biomimetics, Biomaterials and Biomedical Engineering" covers topical issue of biomimetic approach to the development of modern means of a wide range of industrial applications, the new solutions in the field of biomedical engineering and of pharmacological practice and also illuminates t…
International audience
Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.
Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.