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 influence of the metal-dielectric junction on the electric field distribution along the solid insulator-vacuum interface is analyzed in detail in two widely used electrode-insulator geometries: (1) a cylindrical solid insulator with metal inserts at both ends and (2) a cylindrical solid insulator placed in recesse…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrostatic potentials and relative bond strengths of some nitro- and nitrosoacetylene derivativesPeter Politzer and Ruth Bar-AdonCite this: J. Am. Chem. Soc. 1987, 109, 12, 3529–3534Publication Date (Print):June 1, 1987Publication History Published online1 May 2002Publish…
Clostridium sporogenes was grown on alanine, glycine and alanine + glycine in pure culture and in syntrophic cultures with methanogens. Batch and continuous pure cultures of C. sporogenes grew only poorly on alanine as the sole amino acid, due to an elevated hydrogen partial pressure and converted alanine to acetate,…
Abstract Morphology and mechanical properties of blends of plasticized poly(vinyl chloride) (PVC) and thermoplastic copolyester elastomer (Hytrel 40D) have been studied with special reference to the effect of blend ratios. Morphology of the blends indicates that the Hytrel phase is dispersed as domains in the continuo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMethyl viologen neutral MV. 1. Preparation and some propertiesM. MohammadCite this: J. Org. Chem. 1987, 52, 13, 2779–2782Publication Date (Print):June 1, 1987Publication History Published online1 May 2002Published inissue 1 June 1987https://pubs.acs.org/doi/10.1021/jo00389a0…
Pitting corrosion resistance of 13% Cr steel, duplex stainless steel, and high Ni austenitic stainless alloys for Oil Country Tubular Goods (OCTG) has been examined by electrochemical measurements in a high temperature, high pressure autoclave, simulating well conditions. Each steel shows the pitting potential in the…
IRAS (infrared reflection absorption spectroscopy) has been employed to study the isotopic mixing reaction: 13C16O(a)+12C18O(a)→13C18O(a)+12C16O(a) on Ni(111) with preadsorbed K adatoms. Under high temperature conditions (T>450 K) where the isotopically mixed CO is being desorbed, it has been shown that the iso…
Euctectoid decomposition of cubic ( c ) ZrO 2 in MgO‐partially‐stabilized ZrO 2 (Mg‐PSZ) has been studied using optical, scanning electron, and transmission electron microscopy. Alloys containing from 8.1 to 18.6 mol% MgO were decomposed by annealing between 1100° and 1300°C for times up to 16 h. The eutectoid product…
Nineteen 4-hydroxy- and 4-methoxy-2-pyrones related to elasnin (I) have been assayed for in vitro inhibition of human sputum elastase (HSE), porcine pancreatic elastase, alpha-chymotrypsin, and trypsin. Inhibition is reported as Ki and Ki'; percentage inhibition was dependent on [S] in a number of cases, making it uns…
The effect on corrosion of composition and microstructure in a series of FeCr-10%Ni alloys with increasing chromium content has been investigated in reducing acids. In the range of 25 to 35% Cr, a wide variation exists in the relative amounts of ferrite and austenite. In reducing acids (H2SO4 and HCl), preferential at…
Multilamellar liposomes were prepared from dipalmitoyl phosphatidylcholine or egg lecithin in combination with cholesterol and either dicetyl phosphate or stearylamine. The size and charge of the colloidal preparations were characterized before labelling with [111In]8-hydroxyquinoline. Freshly labelled liposomes were…
A new theory of dynamic correlations in a strongly coupled, classical one-component plasma (OCP) is developed within the generalized viscoelastic formalism. Fully convergent kinetic equations for the strongly coupled OCP are thereby derived with the aid of a fluctuation-theoretic formulation of the collision integrals…
A series of approximately 150 tests were conducted on ceramic targets struck by cylindro-conical hard-steel projectiles at normal incidence up to velocities of about 1000 m/s. The primary objective was the determination of the effect of layering and the delineation of the ballistic limit of various combinations. In ad…
The main results of the theory of seignette-magnetism are presented. The data on crystalline structure, phase transitions and the properties of more than 70 different seignette-magnetic compounds are reported. Some experimental data on the interaction between dielectric and magnetic properties of seignette-magnets are…
The nucleotide sequence of a 2.9-kilobase Bacillus subtilis DNA fragment containing the entire coding region of aspartokinase II and adjacent chromosomal regions (Bondaryk, R. P., and Paulus, H. (1985a) J. Biol. Chem. 260, 585-591) has been determined. The results confirmed the earlier prediction that the two subunits…
Abstract Untaxial tension tests to the yield point were performed on polypropylene as a function of temperature from 22 to 143°C at a strain rate of 2 min −1 . At 22, 42, and 71°C, measurements were also made at strain rates from 0.02 to 8 min −1 . Yield energy was found to be a linear function of temperature extrapol…
The insulation strength of solid dielectric spacers, sand wiched between electrodes and stressed by dc voltage, can be influenced by surface charges building up during voltage application. The measurement of these trapped charges is diffi cult during the charge accumulation process, but may be car ried out by means of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntrinsically electrically conducting poly(metal tetrathiooxalates)John R. Reynolds, James C. W. Chien, and C. Peter LillyaCite this: Macromolecules 1987, 20, 6, 1184–1191Publication Date (Print):June 1, 1987Publication History Published online1 May 2002Published inissue 1 J…
Water adsorption and surface conductivity on ceramic substrates are important parameters in the electrochemical corrosion of thin-film metallizations and the associated growth of dendrites in humid environments. The adsorption of water provides the necessary electrolyte through which ion migration and electrochemical…
Reactor physics tests at initial startup and after refuelings are performed to verify the nuclear design and to assure safe operation. Analog computers and instruments are widely used for the acquisition of data, and these data are reduced by hand. These conventional procedures, however, require much time and labor. S…