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。
Almost all mineralized tissues contain proteins that are unusually acidic. As they are also often intimately associated with the mineral phase, they are thought to fulfill important functions in controlling mineral formation. Relatively little is known about these important proteins, because their acidic nature causes…
A series of gold nanoparticles were examined for uptake and acute toxicity in human leukemia cells. The nanoparticles (average diameter=18 nm), which possessed various surface modifiers, were not toxic to cells during continuous exposure for three days. Citrate-capped nanoparticles were further examined for their cell…
The electronic structures, dielectric functions, complex refractive indices and absorption spectra for a perfect PbWO 4 (PWO) crystal and the PWO crystals containing lead vacancy V Pb 2− have been calculated using a full-potential (linearized) augmented plane-wave (LAPW) + local orbitals (LO) method with the lattice s…
Diamond single crystals were synthesized in the presence of Ni–Mn catalyst under high temperature and high pressure (HPHT). A thin metal film covering on as-grown diamond formed during diamond growth was examined using transmission electron microscopy. It was shown that phase compositions of the region near the as-gro…
Replacement of expensive duplex stainless steel and conventional carbon steel by a new generation of supermartensitic stainless steel has been taken into account since the last decade in order to meet the technical-economical challenge for transportation flowlines of unprocessed oil and gas products in offshore techno…
Abstract To replace zinc in PVC stabilized formulations and generate a Heavy Metal Free System (HMFS), different costabilizers (i.e., 6‐amino‐1,3 dimethyluracil (Uracil), sodium tetraborate (Borax), sodium phenyl phosphinate (SPP), and NPPD ( N ‐phenyl‐3‐acetylpyrrolidin‐2,4‐dione), and their combinations) were tested…
A range of uranium oxide-based catalysts, derived from UO2(NO3)2.6H2O and UCl4 precursors, and supported on gamma-Al2O3, SiO2 and mesoporous H1SiO2, have been synthesized and then characterized using the following methods: isothermal nitrogen adsorption/desorption measurements, diffuse reflectance infrared spectroscop…
Magnetic properties and temperature dependence of electrical transport properties of rare-earth-metal Dy-doped GaN thin film are experimentally studied with a superconducting quantum interference device magnetometer and van der Pauw method. It was found that this thin nitride film has both semiconductor properties and…
We study theoretically the structure of sliding grafted polymer layers, or SGP layers. These interfacial structures are built by attaching each polymer to the substrate with a ringlike molecule such as cyclodextrins. Such a topological grafting mode allows the chains to freely slide along the attachment point. Escape…
Ultrathin La(0.8)Ca(0.2)MnO(3) films have been measured in a field-effect geometry. The gate electric field produces a significant ambipolar decrease in resistance at low temperatures. This is attributed to the development of a pseudogap in the density of states and the coupling of localized charge to strain. Within a…
Abstract Chiral conducting polyaniline, which was prepared electrochemically from (+) and (−) camphorsulfonic acid, was utilized for the enantiomeric detection of phenylalanine in neutral phosphate buffer solution. Following electropolymerization the polymer films were dedoped in aqueous ammonia and subsequently shown…
Abstract Uncompatibilized and compatibilized blends of poly(ethylene terephthalate) (PET) and high‐density polyethylene (HDPE) (50:50 PET/HDPE) have been prepared and characterized. A commercial grade of ethylene/methacrylic acid copolymer was used as compatibilizing agent and added to the blends in two different prop…
Abstract The nature of negative thermal expansion in the layer plane of the layered semiconductor TlGaSe 2 has been investigated. It is shown that, in contrast to other crystals with a layered structure in which negative linear expansion is observed, the nature of the negative thermal expansion in TlGaSe 2 crystals is…
The effect of Na-Oleate on the agglomeration of calcium carbonate was investigated. Oleate is determined by Infrared spectroscopy. In order to detect the amount of Oleate adsorbed on the calcium carbonate crystals, the differential thermal analysis method was used. The agglomerate size and zeta potential were investig…
The metastable liquid–liquid phase separation in undercooled Fe–Co–Cu ternary alloy melts ( X Cu = 0.10–0.84; X Co : X Fe = 1:3, 1:1 and 3:1) is investigated by differential thermal analysis in combination with glass fluxing technique. In almost every case, the undercooling of the homogeneous alloy melt was sufficient…
Dendrons with a fluorescent probe in a specific location have been synthesized and characterized. Accessibility of guest molecules to each of these layers was then analyzed using an intermolecular photoinduced electron-transfer process. Comparisons of the accessibility among each layer of the dendron and among the gen…
Nanocrystalline silicon films were prepared by pulsed-laser ablation in high-purity He, Ar or Ne gas at room temperature under a deposition pressure of 10 Pa. The Raman and X-ray diffraction spectra indicate that the films are nanocrystalline. Scanning electron microscopy images show that Ar or Ne gas, compared to He…
Local environments of solutes in $\ensuremath{\beta}$- and spinel ${\mathrm{Si}}_{6\ensuremath{-}z}{\mathrm{Al}}_{z}{\mathrm{O}}_{z}{\mathrm{N}}_{8\ensuremath{-}z}$ are investigated by means of Al $K$ x-ray absorption near-edge structure. The experimental spectra are found to be the same throughout the wide solubility…
Water soluble polymer anticancer conjugates can improve the pharmacokinetics of covalently bound drugs by limiting cellular uptake to the endocytic route, thus prolonging plasma circulation time and consequently facilitating tumor targeting by the enhanced permeability and retention (EPR) effect. Many of the first gen…
A series of donor−spacer−acceptor molecules, 4-{[ n -(4-stilbazoyl)]alkyloxy}benzoic acid, where n is the number of carbon atoms in alkyloxy chain and equals to 6, 8, 10, and 12, respectively, for 6a − d, were synthesized. The molecular “complexes” formed by identical 6a − d molecules generated hydrogen-bonded liquid-…