Materials Literature
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The effect of prior cold work of 0 to 60% on subsequent sensitization of Type 304 stainless steel at 660 C was studied from anodic polarization scans in 1N HClO4 + 0.2N NaCl and 0.5M H2SO4 + 0.01 M KSCN solutions and from SCC behavior in room temperature 1N H2SO4 at 150mVSHE at a strain rate of 10−6 sec−1. Small amoun…
The DNA sequence orgainzation of the protein encoding region of the gene for silk fibroin has been analyzed. The accompanying paper (Manningm R. F., and Gage, L. P. (1980) J. Biol. Chem. 255, 9451-9457) shows that the total length of the gene, and its protein, as well as the pattern of restriction sites in the gene is…
Both the magnitude and the sense of the Burgers vector have been determined exactly from the number of the terminating thickness fringes at the exit of a dislocation from a wedge-shaped foil. Thickness fringes in foils of A1-Mg or Fe-Mn alloys were examined under weak-beam conditions in a 1 MV electron microscope for…
Least-squares refinements of the structure of low albite from Amelia, Virginia with three-dimensional neutron and X-ray diffraction intensity data sets yield weighted R factors of 0.024 and 0.035, respectively, with anisotropic thermal models. The two methods result in es-sentially identical positional parameters, tho…
Magnesium hydride, of potential use for reversible storage of hydrogen , has now been synthesized by a method proceeding under mild conditions and which can be performed on a large scale. Especially active catalysts are obtained by reaction of anthracenemagnesium with halides of chromium, titanium, or iron in THF. The…
A new allotrope of selenium has been found. X-ray analysis has revealed that the new form consists of hexameric molecules, Se 6 , with symmetry D 3d . It has been ascertained by rotational and Weissenberg methods that the crystal has a rhombohedral unit cell with lattice parameters in hexagonal axes, a =11.362±0.001 A…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
Abstract 1,2,4,5‐Tetracyanobenzene reacts under mild conditions with anionic reagents not to polymer but to low molecular weight, high substituted phthalocyanines: 2,3,9,10,16,17,23,24‐octacyanophthalocyanine ( 3a ) and tetrakis(1‐imino‐3‐propoxyisoindolo)porphyrazine ( 3b ). 3a is saponified to the octacarboxyphthalo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn efficient photocathode for semiconductor liquid junction cells: 9.4% solar conversion efficiency with p-InP/VCl3-VCl2-HCl/CA. Heller, B. Miller, H. J. Lewerenz, and K. J. BachmannCite this: J. Am. Chem. Soc. 1980, 102, 21, 6555–6556Publication Date (Print):October 8, 1980…
The addition of a small amount of molybdenum to amorphous Fe‐Cr‐B alloys improves the corrosion resistance in hydrochloric acid. In particular, amorphous alloys containing 5 atomic percent or more molybdenum passivate spontaneously even in , showing no pitting by anodic polarization. However, an excess addition of mol…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallization Kinetics from MSMPR CrystallizersJohn Garside and Mukund B. ShahCite this: Ind. Eng. Chem. Process Des. Dev. 1980, 19, 4, 509–514Publication Date (Print):October 1, 1980Publication History Published online1 May 2002Published inissue 1 October 1980https://pubs…
Abstract Samples containing allophane with molar Al/Si ratios from 1.0 to 2.0 have been examined by infrared spectroscopy, X-ray fluorescence, and phosphate adsorption methods. The infrared spectra of allophane with Al/Si ratios close to 2.0 showed that the wall of the allophane spherules is made up of imogolite struc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTImidazolate complexes of iron and manganese tetraphenylporphyrinsJohn T. Landrum, K. Hatano, W. Robert Scheidt, and Christopher A. ReedCite this: J. Am. Chem. Soc. 1980, 102, 22, 6729–6735Publication Date (Print):October 15, 1980Publication History Published online1 May 2002…
Anodic polarization measurements made in Hanks' physiological solution at 37 degrees C and a pH of 7.4 show titanium materials to be the most passive of the following metals: titanium, Ti-6A1-4V, Ti-Ni (memory alloy), MP35N (Co-Ni-Cr-Mo), Co-Cr-Mo, 316L stainless steel, and nickel. The influence of the amino acids, cy…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymerized vesiclesSteven L. Regen, Bronislaw Czech, and Alok SinghCite this: J. Am. Chem. Soc. 1980, 102, 21, 6638–6640Publication Date (Print):October 8, 1980Publication History Published online1 May 2002Published inissue 8 October 1980https://pubs.acs.org/doi/10.1021/ja0…
The temperature variations of the refractive indices of LiYF4, YLF, have been measured in the visible region of the spectrum. The temperature variation at 0.546 μm are −0.67×10−6/°C and −2.30×10−6/°C for the ordinary and extraordinary refractive indices, respectively. A Sellmeier equation was fit to more extensive roo…
Abstract The Raman spectra of the low temperature phase single crystal of KHSO 4 and of polycrystalline KDSO 4 have been investigated at 300 and 90 K. Infrared spectra of polycrystalline samples have been recorded for compaison in the 4000 to 30 cm −1 range. An assignment of bands due to internal vibrations to their s…
The magnetostriction constant and saturation magnetization at room temperature are measured for iron-based amorphous alloys containing various kinds of metalloid and metal atoms, except Co and Ni. The data show that the magnetostriction constant is proportional to the square of the saturation magnetization for these a…
Abstract In the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene or 1,5-diazabicyclo[4.3.0]non-5-ene, metal-free phthalocyanine was obtained by heating phthalonitrile in alcohols. Addition of a copper(II) salt in the reaction gave copper phthalocyanine in a good yield.
This paper describes the development of a high-speed torsional testing machine and results obtained on the strain-rate dependent strength of copper at large shear strains. Test techniques and data obtained are intended to be useful in applications such as ballistics and machining. For copper, the results indicate posi…