Materials Literature
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La vitamine B6 est d'une importance primordiale dans tous les organismes et agit, sous la forme de phosphate de pyridoxal (PPL), comme cofacteur pour de nombreuses enzymes métaboliques. La principale voie menant à la biosynthèse de la vitamine B6 fut récemment étudiée et implique deux enzymes, PDX1 et PDX2 pour la pro…
As petroleum resources are finite, it is imperative to use them wisely in energy conversion applications and, at the same time, develop alternative energy sources. Biomass is one of the renewable energy sources that can be used to partially replace fossil fuels. Biomass-based fuels can be produced domestically and can…
Electrophoretic deposition has emerged as a versatile and precisely tunable approach for the rapid deposition of conformal thin films of colloidal nanocrystals. The electrophoretic deposition of phosphor particles has assumed special significance in recent years as a commercially viable means toward the fabrication of…
The efficacy of stripping solvents is based on inducing cohesive and adhesive failure in coatings via swelling and bond breakage. In this study, the performance of stripping solvents methylene chloride (CH2Cl2) and methylene chloride-phenol (CH2Cl2-Ph, 19:1 blend) on a cured epoxy-amine coating was evaluated by examin…
A 2+1 dimensional PDE traveling wave model describing spatial-lateral dynamics of edge-emitting broad area semiconductor devices is considered. A numerical scheme based on a split-step Fourier method is presented and implemented on a parallel compute cluster. Simulations of the model equations are used for optimizing…
The prediction of ductile fracture occurrence in hot forging processes is one of the main industrial issues, which needs damage models that have to be on one hand accurate and easily calibrated, but also easy enough to be industrially implemented an utilized. Tensile testing formability characterization, although expe…
Evaporation induced self-assembly is an established method for producing close-packed two-dimensional sphere masks on hydrophilic surfaces such as glass. In sphere lithography, gold or silver is deposited over sphere masks to generate a film-over-nanospheres or a nanoprism array that can be used as a sensing surface i…
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Fatigue is the one of the main contributors to problems related to structural safety of civil and marine structures. Life-cycle management (LCM) techniques considering various uncertainties can be used to predict the safe service life of fatigue sensitive structures, plan for their future inspections and support the d…
Self-assembled gold (Au) nanoparticles (NPs) were synthesized in micelle surface cavities of a L121 block polymer in the presence of zwitterionic (viz. DPS, TPS, and HPS) and sugar surfactants (OG and DDM) in aqueous phase at 70 °C by using the surface cavities of L121 as reducing sites for converting Au(III) into Au(…
Remarkably little is known about metal-to-ligand charge transfer (MLCT) excited-state relaxation pathways for the ruthenium polypyridyl compounds commonly utilized in dye-sensitized solar cells. Herein, we report variable-temperature photoluminescence studies of compounds of the general type cis-Ru(LL)(2)(X)(2), where…
The H/D exchange process in the imidazolium-based room temperature ionic liquids (RTILs) 1-decyl-3-methyl-imidazolium bromide- and chloride ([C₁₀mim][Br] and [C₁₀mim][Cl]) in D₂O solutions of various concentrations was studied applying ¹H, ¹³C NMR, and Raman spectroscopy. The time dependencies of integral intensities…
A series of surface-modified expanded poly(tetrafluoroethylene) membranes showed varied levels of in vitro macrophage proinflammatory response. Membranes containing a mixture of phosphate and hydroxyl groups (as determined by X-ray photoelectron spectroscopy analysis) stimulate greater macrophage activation than sampl…
Self-assembly of amyloid nanofiber is associated with functional and pathological processes such as in neurodegenerative diseases. Despite intensive studies, stochastic nature of the process has made it difficult to elucidate molecular mechanisms for the key amyloid nucleation. Here, we investigated the amyloid nuclea…
Este trabalho apresenta um metodo para a caracterizacao das lesoes de pele, a partir das caracteristicas da regra ABCD (assimetria, borda, cor e diâmetro) e analise de textura. As caracteristicas ABCD sao obtidas de acordo com o dermatologista e a textura das imagens e definida pela sua dimensao fractal, por meio do m…
Over the past decade, there has been much controversy regarding the microscopic mechanism by which the π-electron-rich carbon nanomaterials such as graphene and carbon nanotubes can be dispersed in ionic liquids. Through a combination of a quantum mechanical calculation on the level of density functional theory, an ex…
We report highly bright and efficient red, green, and blue quantum dot (QD) based light-emitting diodes (QLEDs) by using an inverted device structure with solution-processed ZnO nanoparticles as the electron injection layer and by optimizing energy levels with the organic hole transport layer.
Hot forging dies experience during service excessive cyclic thermo-mechanical, tribological as well as chemical loads. These loads occur in a repeated manner and may cause premature fatigue failure of the forming tools and thus lead to an interruption of the production process. Die failures due to fatigue crack initia…
Studied the mechanism and kinetics of tungsten oxide recovery blue hydrogen and tungsten powder with options for unit surface for production of high quality tungsten wire.
The problem of determining the elastoplastic properties of a prismatic bar from the given relation from experiment between torsional moment MT and angle of twist per unit of rod’s length θ is investigated as inverse problem. Proposed method of solution of inverse problem is based on solution of some sequences of direc…