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。
Dielectric properties of relaxor ferroelectrics are characterized by giant and temperature-insensitive dielectric constants and large frequency dependence (dielectric relaxation), and therefore useful for high permittivity capacitors. Relaxor ferroelectrics also reveal superior characteristics in electrostriction and…
Abstract Layer charge is recognized as the single most important characteristic of 2:1 phyllosilicates. It indicates a mineral's capacity to retain cations and to adsorb water and various polar organic molecules. The affinity of organic-clays for sorption of organic contaminants in aqueous systems is now attracting co…
A rapid, direct nitridation process for the manufacture of sinterable aluminum nitride (A1N) powder was developed at the pilot scale. Atomized aluminum metal and nitrogen gas were heated and reacted rapidly to synthesize A1N while they passed through the reaction zone of a transport flow reactor. The heated walls of t…
Initial clinical studies with doxorubicin entrapped in the bilayer of phosphatidylglycerol-rich liposomes were hindered by the avid reticuloendothelial system (RES) uptake and by drug leakage from circulating liposomes. In contrast, recent tests of a doxorubicin formulation of polyethyleneglycol-coated liposomes (Doxi…
We describe the preparation and characterisation of colloidal dispersions of polypyrrole–silica nanocomposite particles. These nanocomposites have been characterised in terms of their particle size and chemical composition by a wide range of experimental techniques, including transmission electron microscopy, disc cen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGlass transitions of polymers with compressed fluid diluents: type II and III behaviorP. D. Condo, D. R. Paul, and K. P. JohnstonCite this: Macromolecules 1994, 27, 2, 365–371Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydroxylated nylons based on unprotected esterified D-glucaric acid by simple condensation reactionsD. E. Kiely, L. Chen, and T. H. LinCite this: J. Am. Chem. Soc. 1994, 116, 2, 571–578Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Publ…
Supported reagents have been widely used in organic synthesis for some 25 years and their importance is likely to increase as a result of new environmental legislation and the drive towards clean technology. While many supported reagents are stoichiometric in reactions the successful development of genuinely catalytic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComputation and management of chemical properties in CACTVS: An extensible networked approach toward modularity and compatibilityWolf Dietrich Ihlenfeldt, Yoshimasa Takahashi, Hidetsugu Abe, and S. SasakiCite this: J. Chem. Inf. Comput. Sci. 1994, 34, 1, 109–116Publication D…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA study of leucoemeraldine and effect of redox reactions on molecular weight of chemically prepared polyanilineYen Wei, Kesyin F. Hsueh, and Guang Way JangCite this: Macromolecules 1994, 27, 2, 518–525Publication Date (Print):January 1, 1994Publication History Published onli…
Results of a study performed to obtain a better understanding of the material characteristics responsible for hydrophobicity recovery leading to a high wet surface resistance in silicone rubbers used for outdoor HV insulation, are reported. The samples were obtained from new and artificially aged HV insulators using H…
A method was developed to identify compensating changes between residues at positions in a multiple sequence alignment. (For example, one position might always contain a positively charged residue when the other is negatively charged and vice versa.) A correlation-based method was used to measure the compensation foun…
The first series of organometallic silicon dendritic macromolecules, containing a controlled number of redox-active centres, are synthesized and characterized.
Abstract The preferred XPS methodology for measurement of SiO 2 film thickness on polished silicon surfaces is discussed. A precise measurement of the photoelectron attenuation length was made using nuclear reaction analysis (NRA) to calibrate the film thicknesses. Anodic oxide films on Si, which are very reproducible…
An infrared study of CeO2 is presented which allows discrimination of the bands due to residual carbonaceous impurities from the bands arising from multiphonon absorption and electronic transitions induced by atomic defects. CO adsorption experiments show the presence of coordinatively unsaturated (cus) Ce3+ or Ce4+ s…
Space charge distribution was measured, applying an electric field of >1 MV/cm to 3 mm thick XLPE cable insulation. Improving the conventional pulse electro-acoustic method, a new method was developed to measure space charge when applying HV to cables. Under high field, hetero charges were formed soon after voltage ap…
The hypothesis is suggested describing the molecular mechanism of protective action of poly(ethylene glycol) on liposomes in vivo on the basis of polymer properties in solvent. The protective layer of polymer on the liposome surface is considered as a “cloud” of possible conformations of macromolecules. If polymer is…
Recycled newspaper fibers (ONP) are potentially outstanding nonabrasive reinforcing fibers with high specific properties. In this study, a high energy thermokinetic mixer was used to mix these fibers in a polypropylene (PP) matrix, and the blends were then injection molded in order to observe the tensile and impact st…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnionic ring-opening oligomerization and polymerization of silicon-bridged [1]ferrocenophanes: Characterization of short-chain models for poly(ferrocenylsilane) high polymersRon Rulkens, Alan J. Lough, and Ian MannersCite this: J. Am. Chem. Soc. 1994, 116, 2, 797–798Publicat…
The attachment and growth of human endothelial cells and fibroblasts was studied on polymer surfaces fabricated by the polymerization of volatile amine and amide compounds in a low pressure gas plasma, and by the treatment of various surfaces in ammonia plasmas, which served to increase the nitrogen content of the sur…