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。
Summary The chemical, mineralogical, and textural changes involved in the weathering of basalt have been traced through various stages from fresh rock (which has a cation exchange capacity of 10 meq/100 g due to the presence of a swelling chlorite mineral) to reddened basaltic rubble consisting of interstratified mont…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStability, electronic spectra, and structure of the copper(II) chloride complexes in N,N-dimethylformamideMax Elleb, Jean Meullemeestre, Marie Jose Schwing-Weill, and Francois VierlingCite this: Inorg. Chem. 1980, 19, 9, 2699–2704Publication Date (Print):September 1, 1980Pub…
The effect of gamma irradiation on the release of the soluble and insoluble corrosion products was investigated with carbon steel and austenitic Type 304 stainless steel at high temperature using a small experimental loop. It was found that gamma radiation enhances the release rates of insoluble corrosion products (cr…
This study was conducted to determine the properties of selected Andosols from northeastern Japan and the factors affecting the root growth of burdock, Arctium lappa cv. Takinogawa; barley, Hordeum vulgare cv. Norin-24; and orchard grass Dactylis glomerata cv. Kitamidori grown on these soils in a greenhouse. According…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFunctional Polymers in the Generation of Colloidal Dispersions of Amorphous SeleniumThomas W. Smith and Richard A. CheathamCite this: Macromolecules 1980, 13, 5, 1203–1207Publication Date (Print):September 1, 1980Publication History Published online1 May 2002Published inissu…
Electrochemistry of tetra(aminophenyl)porphyrin covalently attached to glassy carbon and then cobalt‐metallated, was investigated in DMSO and CH 3 CN solvents in the presence of pyridine. Shifts in formal potential were used to measure complex stability constants and coordination number for the pyridine complexes of t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolybdoarsinate heteropoly complexes. Structure of the hydrogen tetramolybdodimethylarsinate(2-) anion by x-ray and neutron diffractionK. M. Barkigia, L. M. Rajkovic-Blazer, M. T. Pope, E. Prince, and C. O. QuicksallCite this: Inorg. Chem. 1980, 19, 9, 2531–2537Publication D…
Ultrasonic absorption measurements in the range 0.5--56 MHz, and measurements of velocity at 8.87 MHz, were made in collagen suspensions in which molecular integrity was preserved, in a range of concentrations 0.07--0.7% by weight, at 10 and 20 degrees C. Absorption and velocity values, per unit concentration, exhibit…
Charge localization in Ti4O7 and Fe3O4 and the respective insulating states are discussed. It is concluded that the ground state in both systems is bipolaronic. The concept of such a bipolaron is discussed and the importance of elastic interaction between two localized electrons as the dominant interaction in such sys…
Abstract The techniques of density, birefringence, and wide X‐ray diffraction were employed to characterize the microstructure of injection molded polyethylene parts. Generally, maximum crystallinity (density) occurs at the center of the molding, while the minimum crystallinity occurs near the surface. Higher densitie…
UNLABELLED: An animal model was developed to study the histology and collagen chemistry of healing cortical bone. A hole was cut through the cortex of the mid-shaft of the humerus of the adult chicken, which allowed for repair at a mechanically stable site. After one to two weeks the collagen of the repair tissue, whi…
A three dimensional finite element formulation and algorithm for the solution of 3-d magnetic fields was developed. The method is presented here with applications to determination of local flux densities in a 3-d field pattern, as well as global energy calculations of an air cored coil. The results compare well with c…
Summary The maghemitization process, by which magnetic minerals with spinel structure become progressively oxidized but remain single phase spinels, seems to be an important feature of submarine weathering. Whether the process takes place by the minerals acquiring oxygen from the sea-water or by the sea-water leaching…
Intermediatry steps in cellulose synthesis in Acetobacter xylinum were studied with resting cells and particulate-membranous preparations of the wild-type strain and of a celluloseless mutant. Exogenously supplied [1-14C]glucose was rapidly converted by resting cells of both types into glucose 6-phosphate, glucose 1-p…
Abstract EPR of Cu(H 2 O) pseudo Jahn‐Teller (JT) centres in dia‐ and paramagnetic Tutton salt crystals A 2 M(SO 4 ) 2 . 6H 2 O (I) with A = Rb, Cs, NH 4 and M=Zn, Cu and K 2 M(ZrF 6 ) 2 . 6H 2 O (II) crystals in the temperature range 300 to 4.2 K at frequencies 9.5 and 37 GHz is studied. The dynamic JT nature of Cu(H…
Abstract Proton conductivity is an outstanding feature of Al(OH) 3 , Mg(OH) 2 , and Ca(OH) 2 powders between room temperature and their respective dehydration temperatures. It can be measured by using Pd‐black electrodes in H 2 either by d.c. conductivity measurements, applying high injection voltages (> 10 4 V/cm)…
Abstract A prevalent view is that the red clayey parent material (terra rossa) of Crider and associated soils is a residual product from solution of limestone in the karst of southern Indiana. The sharp, abrupt contact between terra rossa and limestone provides no evidence to support the concept of a residual origin f…
Abstract Europium(III) chelates of dibenzoylmethane (DBM) ( 1 ) and β‐diketone‐containing polymers, i.e., poly( p ‐benzoylacetylstyrene) ( 2 ) and poly(aryl β‐diketone) ( 3 ), were prepared. In the polymer 2 the β‐diketone moiety is attached to the phenyl ring, and for polymer 3 the β‐diketone group is incorporated in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Morphological Properties of a Triblock Copolymer of the ABC TypeYuhshuh Matsushita, Haruhisa Choshi, Teruo Fujimoto, and Mitsuru NagasawaCite this: Macromolecules 1980, 13, 5, 1053–1058Publication Date (Print):September 1, 1980Publication History Published on…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Motion in Polycarbonate and Modified PolycarbonatesT. R. Steger, Jacob Schaefer, E. O. Stejskal, and R. A. McKayCite this: Macromolecules 1980, 13, 5, 1127–1132Publication Date (Print):September 1, 1980Publication History Published online1 May 2002Published inissue…