Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature-dependent changes in the structure of the amorphous domains of semicrystalline polymersMarc L. MansfieldCite this: Macromolecules 1987, 20, 6, 1384–1393Publication Date (Print):June 1, 1987Publication History Published online1 May 2002Published inissue 1 June 198…
Electrical breakdown strength of paper-oil insulation samples was meas ured under dc, ac and pulsating voltages. The latter was obtained by superimposing ac upon dc voltage and provides an attractive method for a simultaneous testing and assessment of the state of insulation of the various parts of HV apparatus in ser…
Three different alloys of AISI Type 444 (18Cr–2Mo) ferritic stainless steel, stabilized to different levels with titanium and/or niobium, were melted as welds or weld simulations with deliberate additions of nitrogen to the argon shielding gas in order to simulate the effects of accidental contamination by nitrogen du…
The following fifteen reference patterns of boride, silicide and oxide ceramics represent the first group of ceramic phases measured at the National Bureau of Standards under the project “High Quality Reference Patterns and Total Digital Powder Patterns of Technologically Important Ceramic Phases”. The support and int…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelective steroid chlorinations directed by attached pyridine ester templatesRonald Breslow, Michael Brandl, Juergen Hunger, and Alan D. AdamsCite this: J. Am. Chem. Soc. 1987, 109, 12, 3799–3801Publication Date (Print):June 1, 1987Publication History Published online1 May 2…
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…