Materials Literature
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ABSTRACT The relationship between surface tension and foamability of protein solutions was examined. Proteins including egg albumin, soybean protein, casein, milk whey protein and gelatin were used. Foamability was expressed as “foaming power” which corresponded to the ratio of gas volume to the liquid volume in the f…
Sn 2S 3 is orthorhombic with Pnma, a=8.878 (2), b=3.751 (1), c=14.020 (3) Aring, Z=4, Dm=4.87, Dx=4.75 Mg m -3, Mr=333.6, mu(Mo Kalpha)=11.8 mm -1, and the final R=0.04 for 1335 observed X-ray data. The crystal structure was redetermined using a crystal of improved quality and a diffractometer and applying corrections…
The concept of MDO structures (structures of maximum degree of order) is explained in detail and defined. This concept corresponds closely to the concepts of standard, simple or regular polytypes, it seems, however, to be more adequate for complicated examples. MDO polytypes consisting of equivalent OD layers are trea…
Abstract Metal phthalocyanine oligomers that possess peripheral carboxylic acid groups were prepared by the reaction of pyromellitic dianhydride, a metal salt, urea, and a catalyst. These materials have blue to purple colors with a metallic luster and are soluble in sulfuric acid, dimethylsulfoxide, dimethylformamide,…
Cellulose-negative mutants of Acetobacter xylinum have been isolated. Chemical mutagenesis induced a high frequency of such mutants without significant cell killing. Cellulose synthesis could be activated phenotypically in the majority of the mutants by antibiotics that block RNA or protein synthesis. Therefore these…
A dislocation model for the smectic-$A$---nematic transition is mapped onto a peculiar sort of anistropic superconductor, which is then studied using a momentum-shell renormalization group. The elastic constants behave according to the helium analog, while the specific heat displays an inverted $\ensuremath{\lambda}$…
Abstract The permeability ( P ) of cellulose nitrate (CN)/poly(ethylene glycol) (PEG) blend membranes for N 2 , O 2 , and CO 2 has been measured as a function of film composition. The system CN/PEG‐300 showed excellent miscibility, and films of the composition from 100/0 to 50/50 could be used for permeability measure…
Abstract Blood samples obtained from 130 putrefied bodies were studied for endogenous ethanol (postmortem neoformation). An objective method of establishing the degree of putrefaction was developed and correlated with the determined ethanol concentration. The ethanol concentration of the vitreous humor was found to be…
The organic compound 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) has previously been observed to undergo a large increase in conductivity on irradiation with energetic particle beams. In this letter, we describe the electrical characteristics of novel rectifying junctions employing unirradiated PTCDA vapor de…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and characterization of heteropolytungstates containing group 3a elementsFrans Zonnevijlle, Claude M. Tourne, and Gilbert F. TourneCite this: Inorg. Chem. 1982, 21, 7, 2742–2750Publication Date (Print):July 1, 1982Publication History Published online1 May 2002Pub…
"Nuclear and Radiochemistry." Nuclear Science and Engineering, 81(3), pp. 483–484
A model of the electrochemical conditions in a static crack has been developed for steel in the active state based on the steady‐state mass transport of species by diffusion and ion migration. The main reactions considered were anodic dissolution, hydrolysis of ferrous ions, and cathodic reduction of hydrogen ions and…
Abstract The mechanical properties of binary blends of high‐density polyethylene and polypropylene are quite good compared to those for blends of some other immiscible pairs. The property relationships observed depend strongly on the process used to fabricate the blends as shown by comparisons of specimens made by inj…
Abstract The cellulose/lithium chloride/dimethylacetamide (DMAc) and cellulose/lithium chloride/ N ‐methyl‐2‐pyrroilidinone (NMP) solutions were investigated by 13 C NMR spectroscopy. Well‐resolved spectra were obtained for both solutions and indicated that cellulose was present in these systems in the form of underiv…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and characterization of iron(III)- and rhodium(III)-containing heteropolytungstates. Identification of novel oxo-bridged iron(III) dimersFrans Zonnevijlle, Claude M. Tourne, and Gilbert F. TourneCite this: Inorg. Chem. 1982, 21, 7, 2751–2757Publication Date (Prin…
Summary A simplified method to calculate CaCO3 saturation is developed using only commonly measured field parameters. The calculated saturation index, Is, and pH values are accurate at high temperatures and pressures in brines and are compared with less sophisticated and more complex calculations. The final forms of I…
During constant‐rate heating to 350°C in concentrated NaOH solutions, cubic ZrO 2 crystallized at ∼120°C from hydrated amorphous ZrO 2 ; these One cubic ZrO 2 particles abruptly changed into needlelike monoclinic ZrO 2 single crystals at 300°C. Crystallization and phase transformation were studied by XRD, TEM, and EPM…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of the mechanism of copolymerization of styrene and acrylonitrileD. J. T. Hill, J. H. O'Donnell, and P. W. O'SullivanCite this: Macromolecules 1982, 15, 4, 960–966Publication Date (Print):July 1, 1982Publication History Published online1 May 2002Published inissue 1…
The visible and near ultraviolet absorption spectra have been measured for thin films of H2Pc [C32H18N8], MgPc, FePc, CoPc, CuPc, and ZnPc. Magnesium and iron phthalocyanine have very different absorption spectra. For most of the phthalocyanines, structure of magnitude 0.21 eV is seen on the visible and Soret bands. A…
Seven types of corrosion and precorrosion of painted metals are reviewed: blistering, early rusting, flash rusting, anodic undermining, filiform corrosion, cathodic delamination, and wet adhesion. The importance of the nature of the interfacial region between the coating and the metal is emphasized. Ten unsolved probl…