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。
The corrosion behavior of phosphatized zinc (Zn)-electroplated steel coated with epoxy films of different thicknesses was studied using electrochemical impedance spectroscopy (EIS), the breakpoint frequency method, potentiodynamic measurements, and the faradaic distortion method. The trends with time of the coatings’…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of the Enantioselective Dihydroxylation of Olefins by OsO4 in the Presence of Chiral BasesAchim Veldkamp and Gernot FrenkingCite this: J. Am. Chem. Soc. 1994, 116, 11, 4937–4946Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Publi…
This is the first of a set of articles on protein adsorption on low-temperature isotropic carbon (LTIC), a reputed blood compatible material. Surface-induced conformational changes of albumin, fibrinogen, and some small proteins were measured by differential scanning calorimetry (DSC) on LTIC powders and colloidal sil…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInclusion Complexes and Guest-Induced Color Changes of pH-Indicator-Modified .beta.-CyclodextrinsTetsuo Kuwabara, Asao Nakamura, Akihiko Ueno, and Fujio TodaCite this: J. Phys. Chem. 1994, 98, 25, 6297–6303Publication Date (Print):June 1, 1994Publication History Published on…
We report on dc-magnetization measurements on high-quality single crystals of the organic superconductors \ensuremath{\kappa}-(BEDT-TTF${)}_{2}$ Cu(NCS${)}_{2}$ and \ensuremath{\kappa}-(BEDT-TTF${)}_{2}$Cu[N(CN${)}_{2}$]Br for fields parallel and perpendicular to the conducting planes. For H perpendicular to the plane…
Amorphous carbon films prepared by filtered cathodic arc deposition have been studied by electron-energy-loss spectroscopy. It is shown nitrogen concentrations in the film of up to 30at.% can be controllably introduced. For nitrogen concentrations of up to 2–3 at.% the films are primarily sp3 bonded, whilst films with…
Abstract Poly(vinyl chloride) compounds offer a wide range of properties from elastomeric to rigid. For this reason they are well suited for many extrusion applications. However, many processors shy away from PVC because of its challenging process‐ability: PVC is shear sensitive, susceptible to thermal degradation, an…
We propose and study a method that self-consistently solves for the current and voltage distributions in random fuse network problems using lattice Green's functions. The method solves for the current distribution by only keeping track of the defect bonds and can treat networks with two extreme types of defects: insul…
Abstract The thermal properties of uniformly random poly(butylene adipate/isophthalate) copolyesters of various composition and different molecular weight were investigated by means of differential scanning calorimetry. All copolymers were partially crystalline, and the main effect of copolymerization was a lowering i…
Electrical conductivity is studied in two component composites, one of which is insulating polymer (nylon6, nylon66) in fibers coated with conducting polypyrrole and the other, polyethylene in spheres without coating. Conductivity is enhanced by more than 15 orders of magnitude when the concentration of polypyrrole-co…
Metal-insulator-semiconductor (MIS) structures of heavily doped ( 6–7×10 18 cm -3 ) epitaxial diamond were prepared, which include highly polarizable BaTiO 3 insulator films. They were characterized by capacitance-voltage ( C-V ) and electron-beam-induced-current (EBIC) measurements. Despite the presence of background…
Abstract Poly[(2,4‐dichloro‐6‐ethoxy‐s‐triazine)‐alt‐(bisphenol A)] (T‐BPA), a polymer with interesting mechanical and thermal properties, was synthesized by phase transfer catalysed interfacial polycondensation. The reaction conditions for the synthesis of T‐BPA were investigated and optimized. The influence of sever…
Highly-dense spherical particles of thorium-based oxides, ThO2 and (Th, U)O2, prepared by the sol-gel method were subjected to dissolution with nitric acid containing 0–0.05 mol/l NaF at high temperatures above 120°C. The dissolution rate depended upon temperature, fluoride concentration and UO2 content. High-temperat…
The corrosion resistance of molybdenum, molybdenum disilicide, and a SiC (p) /Al 2 O 3 composite to molten soda‐lime‐silicate glass was studied. The ASTM‐C621–84 corrosion test method was modified because of inherent inaccuracies in the method and Si attack of platinum crucibles. Specimen‐glass interfacial regions wer…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface Analysis: X-ray Photoelectron Spectroscopy and Auger Electron SpectroscopyNoel H. Turner and John A. SchreifelsCite this: Anal. Chem. 1994, 66, 12, 163–185Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Published inissue 1 June 1994…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAb Initio Crystal Structure Determination of VO(H2PO2)2.cntdot.H2O from X-ray and Neutron Powder Diffraction Data. A Monodimensional Vanadium(IV) HypophosphiteA. Le Bail, M. D. Marcos, and P. AmorosCite this: Inorg. Chem. 1994, 33, 12, 2607–2613Publication Date (Print):June…
Abstract Poly( N ‐vinyl‐2‐pyrrolidone) (PVP) was blended with poly[styrene‐ co ‐(4‐hydroxytyrene)] (PSH) which was obtained from the random copolymer poly[styrene‐ co ‐(4‐acetoxystyrene)] (PSA). The miscibility of PVP/PSH blends in a composition 1 : 1 by weight was evaluated by differential scanning calorimetry (DSC),…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Percolation View of Novolak Dissolution. 3. Dissolution InhibitionHsiao-Yi Shih, Tung-Feng Yeh, Arnost Reiser, Ralph R. Dammel, Hans J. Merrem, and Gerhard PawlowskiCite this: Macromolecules 1994, 27, 12, 3330–3336Publication Date (Print):June 1, 1994Publication History Pu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of .alpha.- and .beta.-Silicon Atoms on the Free Energies of C-H Homolysis and HeterolysisM. J. Bausch and Yong GongCite this: J. Am. Chem. Soc. 1994, 116, 13, 5963–5964Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Published iniss…
The 0.02M strontium chloride (SrCl2) and 0.05M citric acid solution (Sr‐citrate) was developed for the simultaneous determination of availability indices for plant nutrients from soils. The objective of this study was to compare the Sr‐citrate extracting solution with water, 0.002M SrCl2, 0.1M barium chloride (BaCl2),…