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。
Self-assembling of synthesized novel biodegradable hyperbranched amphiphilic poly(ethylene glycol)-polyethylenimine-poly(epsilon-benzyloxycarbonyl-l-lysine) (PEG-PEI-PLys(Z)) in aqueous media is studied. In aqueous media, PLys(Z) is the hydrophobic segment, with PEG and PEI as the hydrophilic segments. It will self-as…
Optically active poly(diphenylacetylene) derivatives, poly(4-(( S )-2-methoxyoctyloxy)diphenylacetylene) ( poly-1 ), poly(4-(( S )-2-triethylsiloxyoctyloxy)diphenylacetylene) ( poly - 2 ), and poly(4-(( S )-2-hydoxyoctyloxy)diphenylacetylene) ( poly - 3 ), were successfully synthesized and were examined about their ch…
Normal pressure modifications and tentative high-pressure phases of the nitridosilicates MSiN(2) with M = Be, Mg, or Ca have been thoroughly studied by density functional methods. At ambient pressure, BeSiN(2) and MgSiN(2) exhibit an ordered wurtzite variant derived from idealized filled β-cristobalite by a C1-type di…
Purpose In this paper, the contribution of dynamic loading, needle and fabric, and the bobbin thread interaction on the changes in the tensile properties of the needle thread are to be investigated. Design/methodology/approach Tensile properties of the needle thread have been studied at four sewing stages, namely befo…
The present study describes experiments carried out to analyze the effects of superficial treatment on the thermal performance of needlepunched nonwoven sisal fiber used as thermal insulation material. Nonwovens with gramature 1300–1400 g/m2 “in natura” and treated (2% w/w sodium hydroxide) were used to the thermal in…
We report measurements of the excitation energy dependence of the fluorescence intermittency of single CdSe/ZnS core/shell nanocrystals (NCs), using two different sizes of NCs and three different excitation energies. The lowest excitation energy corresponds to exciting the smaller size NC at its optical band gap, so w…
The thermodynamic properties and the surface phase diagram of O/Ni(111) have been calculated from Metropolis and Wang-Landau Monte Carlo simulations based on lateral interactions derived from density-functional theory (DFT) calculations. The DFT energies were mapped onto an Ising-like Hamiltonian according to the clus…
Results on morphological, structural, thermal, tensile mechanical and chemical characterization of Attalea funifera piassava fiber have been presented by different research groups. In particular, a paper by Elzubair et al. (2007 Elzubair, A., Bonelli, C. M. C., Suarez, J. C. M. and Mano, E. B. 2007. Morphological, str…
The spin dynamics in ${[{\text{TbPc}}_{2}]}^{0}$ and ${[{\text{DyPc}}_{2}]}^{0}$ single-molecule magnets have been investigated by means of muon and nuclear spin-lattice relaxation rate measurements. The correlation time for the spin fluctuations was found to be close to 0.1 ms already at 50 K, about 2 orders of magni…
First-principles pseudopotential calculations by means of the local density approximation (LDA) within density-functional theory (DFT) are carried out to investigate the negative pressure induced ferroelectric phase transition in rutile TiO(2) in the range of -25 to 25 GPa. The softening behavior of the A(2u)(TO) mode…
TiO 2 photo-catalytic coatings were deposited using three different thermal spray techniques, namely, flame, plasma and high velocity oxy-fuel (HVOF). TiO 2 nanopowders were used as feedstock. X-ray diffraction analysis and scanning electron microscopy were used to study the deposited TiO 2 coating. It was concluded t…
Abstract BACKGROUND: Blocked isocyanate‐functionalized polyolefins have great potential for use in semicrystalline polymer blends to obtain toughened polymers. In this study, poly(butylene terephthalate) (PBT) was blended with allyl N ‐[2‐methyl‐4‐(2‐oxohexahydroazepine‐1‐carboxamido)phenyl] carbamate‐functionalized p…
A new and efficient system for the selective recovery of platinum ions from conventional cheap transition metal mixtures was developed. We found that the selone is reactive toward the conventional acids. Mesoporous silica functionalized by reaction of selone showed excellent selectivity to platinum ions among various…
A multitime probing of density fluctuations is introduced to investigate hidden time scales of heterogeneous dynamics in glass-forming liquids. Molecular-dynamics simulations for simple glass-forming liquids are performed and a three-time correlation function is numerically calculated for general time intervals. It is…
Abstract In this paper, the influence of mesh sensitivity on the fracture predictions during penetration and perforation of hardened blunt-nose cylindrical steel projectiles in plates of Weldox 460E, Weldox 700E, and Weldox 900E steel has been studied. The main objective is to try to describe the experimentally obtain…
The production of porous materials together with their associated applications using cheap precursors demonstrates the potential of a “ chimie douce ” based on carbohydrates and their hydrothermal decomposition products to replace same of the standard organic monomers, fulfilling the today's requirements towards green…
This paper describes the synthesis and physicochemical characterization of novel metal-free phthalocyanines Pc(SO 2 R) 8, bearing eight peripheral alkylsulfonyl substituents. The key synthetic step is the efficient eightfold oxidation of sulfanyl (SR) into sulfonyl (SO 2 R) functions in the precursor Pc(SR) 8 . Quantu…
We consider the classical motion of a massless quasiparticle in a magnetic field and under a weak electromagnetic radiation with the frequency $\ensuremath{\omega}$. Due to the nonparabolic linear energy dispersion, the particle responds not only at the frequency $\ensuremath{\omega}$ but generates a broad frequency s…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTA Direct Function Relationship between Isotacticity and Melting Temperature of Multiblock Stereocopolymer Poly(rac-lactide)Nobuyoshi Nomura*, Jun Hasegawa, and Ryohei IshiiView Author Information Laboratory of Polymer Chemistry, Graduate School of Bioagricultural Sciences, E1-1…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…