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。
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactive Groups on Polymer-Covered Electrodes. 2. Functionalized Thiophene Polymers by Electrochemical Polymerization and Their Application as Polymeric ReagentsH.-P. Welzel, G. Kossmehl, J. Schneider, and W. PliethCite this: Macromolecules 1995, 28, 16, 5575–5580Publication…
Silicon carbide has good oxidation resistance, due to the formation of a protective silica layer. Although amorphous silica is an excellent oxygen barrier, it is very sensitive to impurity elements, which affect its viscosity, oxygen diffusivity, and crystallization kinetics. This paper compares the oxidation rates of…
Two hydrophilic and two hydrophobic fumed silicas of different characteristics were added to solvent-based polyurethane adhesives (PU). IR spectroscopy, contact angle measurements and rheology (viscosity measurements, determination of viscoelastic properties) were used to monitor the variation of properties of PU adhe…
Abstract From a synthetic perspective, divergent dendrimer syntheses are often presented as idealized hyperbranched growth processes leading to perfect dendritic structures. Experimentally it has been found that in addition to ideal structures, varying amounts of structural errors are produced at each growth stage (ge…
Profiles of the back-scattered electron intensity within electron channelling contrast images of dislocations have been calculated using a two-beam dynamical diffraction model and a simple treatment of multiple scattering. Within this diffraction model, the full displacement field was used, for a dislocation in an iso…
Abstract Protein adsorption is the net result of various types of interaction between the different components present in the system, i.e. the sorbent surface, the protein(s), the solvent and any other solutes such as low molecular weight electrolyte. In this paper methods and techniques will be discussed to study the…
The growth and osmoregulation of Chaetoceros muelleri Lemmermann (Bacillariophyceae) were investigated as a function of salinity. This centric diatom grew well over a wide range of salinity and required concentrations of NaCl above 10 mM for growth. Using gas chromatography- mass spectroscopy (GC-MS) analysis of cell…
Abstract Naturally occurring materials like rubber predate the development of science and engineering as we know it today. Historically, rubber and more generally elastomers, known as a class of high polymers, are versatile and useful materials. Rubber is still an elastomer of choice for many engineering applications.…
The paper analyses the mechanism of breakdown of phase-to-ground and phase-to-phase air insulation in the presence of large conducting floating objects, under critical switching impulse stress. A new physical modelling approach is introduced which involves determination of the potential of the floating object by charg…
We outline a practical algorithm for the solution of liquid-state integral equations for fluids of fully anisotropic rigid molecules requiring three Euler angles for their configurational description and leading to pair functions of five angular variables. The method is suitable for all potentials. We illustrate the t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAromatic Polyamides and Polyimides with Benzoxazole or Benzothiazole Pendent Groups Prepared from 5-(2-Benzoxazole)- or 5-(2-Benzothiazole)-1,3-phenylenediamineJohn A. MikroyannidisCite this: Macromolecules 1995, 28, 15, 5177–5183Publication Date (Print):July 1, 1995Publicat…
The results of the mode coupling theory (MCT) for the slow relaxation processes in a liquid of hard spheres close to the liquid to glass transition are discussed. It is also shown that the MCT makes quantitative statements about the glassy structure, the relaxation processes in an intermediate time window and the fina…
The ligand 4-Cl-2,6-bis(benzimidazol-2′-yl)-pyridine(Cl-bzimpy;H2L) acts as a bidentate when coordinated with transition metal ions and the complex [Fe(Cl-bzimpy)2](ClO4)2 was isolated as a solid. The protonation constants (logK). The free ligand and the complex were evaluated in 30:70 (v/v) H2O:EtOH at room temperatu…
We present a theoretical investigation of the band lineups between crystalline and amorphous silicon, based on the first-principles pseudopotential method and the model-solid theory. We find that the offsets are very sensitive to the hydrogen content of the material; the valence-band offset for a junction with unhydro…
Biological structures have evolved to fit their purpose and a discussion is given of the materials and engineering reasons for their success. The contrast is made between traditional engineering's extraction of maximum benefit from choice of materials and Nature's extraction of maximum benefit from structural shapes m…
Silicon carbide (SiC) fibers were synthesized by the pyrolysis of radiation‐cured polycarbosilane (PCS) fibers. The pyrolytic reaction was analyzed through free radicals by electron spin resonance (ESR). Free radicals on Si and C atoms were produced in the pyrolysis, and their yield as a function of reaction temperatu…
We have deposited ZnO:Al films with state-of-the-art electro-optical properties by reactive magnetron sputtering from a zinc target. Films with resistivities of 5×10−4 Ω cm, good optical properties over the visible and near infrared, and with good uniformity are routinely produced. Resistivities down to 1.7×10−4 Ω cm…
Temperature dependence of outgassing was measured for differently surface treated type 316L stainless steel chambers in the temperature range of 25–330 °C. Based on the temperature dependence and outgassing characteristics of major outgassing species, the mechanism of outgassing from the stainless steel surface is dis…
An algorithm is described for the computation of the saturation characteristics of three-phase delta-connected transformers from measured V/sub rms/-I/sub rms/ curves and no-load losses at rated frequency. For these transformers, positive sequence excitation tests are usually carried out with the delta connection clos…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnusual Interaction of Ag+ with an Organopalladium Crown Ether. Synthesis and Structures of [PdCl(L)] and [Pd(H2O)(L)(Ag)][CF3SO3]2 (L = 5,8,11-Trioxa-2,14-dithia-[15]-m-cyclophane)James E. Kickham and Stephen J. LoebCite this: Organometallics 1995, 14, 7, 3584–3587Publicati…