Materials Literature
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The Ras enzyme mediates critical signaling pathways in cell proliferation and development by transitioning between GTP- (active) and GDP-bound (inactive) states. Many cancers are linked to specific Ras mutations affecting its conformational switching between active and inactive states. A detailed understanding of the…
Os estudos da capacidade de adsorção de metais pesados em um solo podem ser empregados para avaliar a contribuição deste na contaminação de águas superficiais e subterrâneas. Este trabalho teve por objetivo estudar a adequação dos modelos de Langmuir e de Freundlich para descrever a adsorção de cobre em Latossolo Verm…
Protein-protein docking is a method for predicting the protein complex structure from monomeric protein structures. Because protein structural information has been increased and the application field has been expanded to more difficult ones such as interactome prediction, a faster protein-protein docking method has be…
We present a geometry-based, sampling based method to explore conformational pathways in medium and large proteins which undergo large-scale conformational transitions. In a past work we developed a coarse-grained geometry-based method that was able to trace large-scale conformational motions in proteins using residue…
In proteins, certain amino acids may play a critical role in determining their structure and function. Examples include flexible regions which allow domain motions, and highly conserved residues on functional interfaces which play a role in binding and interaction with other proteins. Detecting these regions facilitat…
In this study, lignin recovered from a biorefinery waste stream was used to modify a clay saponite to form a lignin–clay nanohybrid. Approximately 32 wt % of lignin was associated into a lignin–clay nanohybrid, which could be well dispersed into an organophilic monomer phase. This nanohybrid was then encapsulated into…
Traditional applications of clay mineral mainly revolved around cosmetics and industrial products, but their scope of application is continuously expanding into pharmaceutics including drug delivery and tissue engineering. The interest in clays amongst the scientific community has increased dramatically in recent year…
Secondary structure element (SSE) identification from volumetric protein density maps is critical for de-novo backbone structure derivation in electron cryo-microscopy (cryoEM). Although multiple methods have been developed to detect SSE from the density maps, accurate detection either need use intervention or careful…
We present an evolutionary stochastic search algorithm to obtain a discrete representation of the protein energy surface in terms of an ensemble of conformations representing local minima. This objective is of primary importance in protein structure modeling, whether the goal is to obtain a broad view of potentially d…
Nanostructured and mesoporous cobalt oxide (Co3O4) nanowire in flower-like arrangements have been directly grown over flexible carbon cloth collectors using solvothermal synthesis for supercapacitor applications. Changes in the morphology and porosity of the nanowire assemblies have been induced by manipulating the ca…
By comparing the grain sizes under different nucleation conditions, the different nucleation mechanisms were investigated. The primitive nuclei origin at some specific interface, and subsequently disperse into the bulk melt with melt flow. The survival probability of nuclei decides the nuclei density in bulk melt, and…
AbstractThe structural evolution of multi-walled carbon nanotubes (MWCNTs) following magnetic nanoparticle incorporation represents a critical stage in the development of functional carbon-based nanocomposites. Understanding how magnetic phases interact with graphitic nanotube architectures is essential for optimizing…
La résolution analytique du problème de la stabilité d’une suspension solide (particules rigides de forme sphérique) dans le système de Taylor-Couette cylindrique a été menée. On s’est basé sur les travaux de Ali and Lueptow (2002) pour formuler les équations régissant la stabilité de l’écoulement dans le cadre d’une…
Vaterite particles containing aminopropyl-functionalized silsesquioxane (SiV) were prepared as osteogenic devices for bone regeneration. The Si xV particles (x = 0, 2.6 and 4.9 wt%) were synthesized by reacting a slurry of calcium hydroxide with carbon dioxide gas in the presence of γ-aminopropyltriethoxysilane (APTES…
Abstract : Stimuli responsive nanostructures constructed from rigid-flexible block molecules hold great promise for fabrication of intelligent nanodevices, nanoelectronics, and nanobiomaterials. One typical feature of rod amphiphiles is their unique anisotropic molecular shape and strong aggregation tendency through p…
【背景・目的】近年、高分子化学およびナノ粒子技術の発展により、病巣への標的化技術が発展してきた。本研究では、微小腫瘍の検出を目指し、長い血中滞留性および腫瘍への受動的集積性を有する中空ナノ粒子PICsome (Anraku et al: Chem Comm. 2011、他) に、臨床でも使用され高い造影効果を持つ超常磁性酸化鉄微粒子 (SPIO) を封入したSPIO-Cy5-PICsomeを開発し、腫瘍集積性と微小腫瘍検出に関する評価を行った。【対象・方法】SPIO-Cy5-PICsomeは、電荷の異なる2種類の高分子により形成されたPICsome内に、SPIO (Resovist®、 富士フィルムRIファーマ)を封入したナノ粒子…
We investigate the efficiency of electrical manipulation on two-dimensional topological insulators by considering a lateral potential superlattice on the system. The electronic states under various conditions are examined carefully. It is found that the dispersion of the mini-band and the electron distribution in the…
We investigated the cuprous oxide (Cu2 O), which is a promising material for use in NQR - thermometers and pressure meters. Recordings were conducted using continuous wave marginal oscillator with Zeeman modulation method. Minimum weight substances that observed with good signal / noise ratio was about 200 mg.
ISIS Graphene Physique Chimie Pourquoi le graphene est-il si etonnant ? Why Graphene is Amazing La structure electronique inhabituelle de graphene permet de produire des effets quantiques coherents remarquables, meme a la temperature ambiante : ce materieu ouvre la porte a de nouvelles applications dans l'electronique…
The asymmetric unit of the title compound, [Ir(C9H7)(C2H4)2], consists of two independent molecules. The bonding between iridium and the five-membered ring of the indenyl ligand shows the usual asymmetry associated with the typical ring slippage responsible for the enhanced activity of indenyl metal compounds when com…