Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract Superhydrophobicity can be used for many applications that require non‐adhesive and water‐repellent surfaces. A successful design of superhydrophobic surfaces requires a correct assessment of the surface roughness effect on wetting. Roughness is an important property in surface mechanics, physics, chemistry,…
Living plants transport substantial amounts of organic material into the soil. This process, called rhizodeposition, provides the substrate for the rhizospheric microbial community. In this study, a laboratory-scale sediment microbial fuel cell, of which the anode is positioned in the rhizosphere of the rice plants, i…
Abstract Polymeric waste materials should be considered resources for the manufacture of new products through recycling processes, with a similar status to virgin fossil‐based plastics and biopolymers from renewable resources. Several efforts can be made to achieve this qualitative quantum leap in plastics recycling,…
The present work brings together the concepts of defect chemistry and photoelectrochemistry in order to consider TiO 2 -based photosensitive oxide semiconductors as photocatalysts for water purification. This paper reports the most recent progress in the defect chemistry of TiO 2 and its solid solutions with aliovalen…
Van der Waals complexes are formed by almost all neutral molecules, which begs the question as to what is so special about the interaction between parallel stacks of arenes. The term π–π stacking interactions should primarily be used as a structural descriptor for unsaturated systems. Genuine π–π interactions are caus…
Summary Two recent papers describe the molecular mechanism by which the activity of GlnR, the repressor of the glutamine synthetase operon in Bacillus subtilis, is stimulated by glutamine‐bound (i.e. feedback‐inhibited) glutamine synthetase (FBI‐GS). Remarkably, FBI‐GS acts as a molecular chaperone to stabilize the as…
The transformation of a chiral antiferroelectric liquid crystal in an electric field was calculated. Minimization of the free energy was performed with respect to both the phase and the modulus of the two-component order parameter. Competition between the electric field, which favors a planar structure, and chirality…
Abstract Single crystalline ZnO film is grown on GaN/sapphire (0001) substrate by molecular beam epitaxy. Ga2O3 is introduced into the ZnO/GaN heterostructure intentionally by oxygen-plasma pre-exposure on the GaN surface prior to ZnO growth. The crystalline orientation and interfacial microstructure are characterized…
It has been widely expected that higher carbon content in ternary compounds ${\text{BC}}_{x}\text{N}$, which crystallize in cubic diamond structure, would lead to increased strength and hardness. This notion was derived from calculated elastic parameters and empirical hardness formulas based on structural and electron…
Abstract Raman spectra of poly methyl methacrylate (PMMA) in contact with compressed CO2 were measured, to investigate effects of CO2 sorption on structure of the PMMA chain. The solubility and diffusivity of CO2 in PMMA were estimated from temporal variations of intensities of CO2 peaks. The PMMA structure was analyz…
Abstract We have demonstrated that uniform and continuous poly(2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid) (PAMPS) tubular core‐shell nanostructures containing linear features of ferritin nanoparticles can be directly fabricated using two immiscible solutions employing coaxial electrospinning. By adjusting the conc…
When composite materials produce a crack, their fibrous position will form bridges, moreover the crack usually propagates in the modality of asymmetrical self-similarity. In this paper an asymmetrical self-similar dynamic crack model of bridging fiber pull-out in unidirectional composite materials is built. Analytical…
Abstract A Electrosynthesis of conducting poly(3-methylpyrrole) (P3MPy) and poly(3-methylpyrrole-2,6-dimethyl-β-cyclodextrin) (poly(3MPy-β-DMCD)) films on a gold electrode in acetonitrile electrolyte solution containing lithium perchlorate has been carried out by potential cycling. Products were characterized with cyc…
The oligomerization of a carbohydrate derived lactone (tetra-O-acetyl-D-gluconolactone) is reported. The novel oligoester is used as a macroinitiator for lactide ring-opening polymerization.
Abstract In this paper we evaluate the correlation between UV light absorption of SOG (spin‐on glass) low dielectric constant (low‐k) films and chemical changes induced by an excimer UV source at several wavelengths: 172 nm, 222 nm, and 308 nm. Low‐k absorption in the UV range was measured by nitrogen purged UV ellips…
In this study, a novel kind of calcium phosphate-mineralized chitosan/alginate microscapsules was prepared through a bio-inspired process for efficient encapsulation of yeast alcohol dehydrogenase (YADH). In this biomimetic process, when Ca 2+ -containing chitosan droplets were added into phosphate-containing solution…
BACKGROUND: Plants, fungi, bacteria and the apicomplexan parasite Plasmodium falciparum are able to synthesize vitamin B6 de novo, whereas mammals depend upon the uptake of this essential nutrient from their diet. The active form of vitamin B6 is pyridoxal 5-phosphate (PLP). For its synthesis two enzymes, Pdx1 and Pdx…
A single-step, nonaqueous, solventless, facile chemical reaction is carried out to synthesize a WSe 2 nanoparticles/carbon nanotubes [WSe 2 /C] composite at moderate temperature. The use of highly toxic H 2 Se gas is avoided, reacting elemental selenium powder with W(CO) 6 at 750 °C under their autogenic pressure in a…
The compulsory-ordered ternary catalytic mechanism for two-substrate two-product enzymes is analyzed to account for binding of inhibitors to each of the four enzyme states and to maintain the relationship between the kinetic constants and the reaction equilibrium constant. The developed quasi-steady flux expression is…
Abstract We report a new approach of reactive spinning to fabricate thermosetting cyanate ester micro‐scale diameter fibers with aligned single walled carbon nanotubes (SWNTs). The composite fibers were produced by first dispersing the SWNTs (1 wt %) in cyanate ester (CE) via solvent blending, followed by pre‐polymeri…