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 width of symmetrical, threefold stacking‐fault nodes in a Cu‐13–43 at. % Al alloy has been measured as a function of node character by means of weak‐beam electron microscopy. The stacking‐fault energy (γ) has been determined independently of the measurement of the width of single, straight, dissociated dislocation…
Summary Total, dithionite-extractable (‘free’) and oxalate-extractable (amorphous) Fe as Fe 2 O 3 forms were determined in eight Nigerian soil profiles selected to include four major parent materials and different drainage conditions. Total Fe ranged from 1·98 to 15·01 % Fe 2 O 3 , the average contents being 4·40, 8·6…
Abstract Light scattering and viscometric studies have been carried out on dilute solutions of a polybenzimidazole in N , N ‐dimethylacetamide. The data, which span the molecular weight range 2.9 ≦ 10 −4 M w ≦ 23.3, and the temperature range 290 ≦ T / K ≦343, yield the dependence of the mean‐square radius of gyration…
Empirical fits to data are obtained which determine the backscattered electron coefficient for films of arbitrary thickness and electrons of normal incidence over the energy range 20–53 keV for the elements Al, Cu, Ag, Au, and Bi. From this is derived a ’’universal’’ fit which describes with reasonable accuracy the ba…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron delocalization in 2,4,6-tris(1,3-dithiol-2-ylidene)-1,3,5-cyclohexanetrione and 2,4,6-tris(1,3-dithiolan-2-ylidene)-1,3,5-cyclohexanetrioneMichio Kimura, William H. Watson, and Juzo NakayamaCite this: J. Org. Chem. 1980, 45, 18, 3719–3721Publication Date (Print):Aug…
The Experimental Breeder Reactor II Mark-II metallic-driver-fuel element has been irradiated to high burnup to assess element lifetime and performance reliability. The elements breached at 10 at.% burnup or greater. This increase in burnup potential compared to its predecessor, the Mark-IA (limited to a burnup of 3 at…
Using a tape casting process, lamellar heterogeneous devices comprised of layers of a commercial soft ferroelectric (modified PZT) and an antiferroelectric (modified PZSnT) were produced. Such devices were found to behave in a similar way to that of a transpolarizer and to effectively stabilize the polarization in the…
Zero magnetostriction compositions in the (FeaCo1−a−bNib)100−y(Si0.4B0. 6)y system in the range 20⩽y⩽30 and 0⩽b⩽0.6, the resultant magnetic properties, and the crystallization temperatures were systematically studied as functions of Ni content (b) and metalloid content ( y). The iron content (a=0.058−0.11) decreases w…
(1980). Origin of accessory moissanite. International Geology Review: Vol. 22, No. 8, pp. 961-970.
Low temperature specific heat of the itinerant electron antiferromagnetic Cr 1- x V x alloys was measured in the temperature range between 1.4 and 5.0 K. The V concentration dependence of the linear specific heat coefficient is interpreted in terms of two contributions, the effect of spin fluctuations and the variatio…
Abstract The compounds SrZn 2 As 2 , SrCd 2 As 2 , and YbMnCuP 2 have been prepared and their structures determined. They are isotypic and crystallize trigonally in a CaAl 2 Si 2 -type structure (space group P3̄m 1) with the lattice constants: SrZn 2 As 2 a = 422,3(1) pm, c = 726,8(1) pm, SrCd 2 As 2 a = 445,2(1) pm,…
ABSTRACT Young’s moduli (E) in bending and extension were measured for selected contour feather shafts from the chicken (Gallus domesticus), turkey (Meleagris gallopavo), ring-necked pheasant (Phasianus colchicus) and herring gull (Larusargentalas). These were treated mechanically as tapering beams. In extension, E ra…
Laser-induced-fluorescence-band-narrowing and time-resolved-spectroscopy techniques are extended to measure the inequivalent sites in the spectroscopic properties of $^{3}P_{1}$ and $^{3}P_{0}$ excited states of the ${\mathrm{Bi}}^{3+}$ ion in germanate glass. Under excitation of the $^{3}P_{1}$ components, at 4 K, th…
The existence of peripheral ring currents in the dianion and the tetraanion of (1) is manifested in the NMR spectra. In the case of (1), the dianion, and the tetraanion, H-3 (outer) absorbs at δ = 7.37, 9.26, and 4.48, respectively, and H-4 (inner) at 7.37, −7.07 (!), and 12.76, respectively. From the viewpoint of bon…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of some .pi.-bonded diazo complexes of nickel(0), platinum(0), and ruthenium(0): molecular structure of Ru(CO)2(N2C5Cl4)(P(C6H5)3)2.CH2Cl2K. Dahl Schramm and James A. IbersCite this: Inorg. Chem. 1980, 19, 8, 2441–2448Publication Date (Print):A…
A study has been made of the morphogenetic properties of anterior and posterior skin from the lower forelimb of the axolotl. The basic experiment consisted of a graft of a half cuff of skin from a donor to a host limb followed by a 2-week healing period, amputation through the graft, and a study of the resulting regen…
Thermal stresses in chemical vapor deposited (CVD) vitreous silicate and phosphosilicate glass (PSG) films on Si substrates are measured in situ from room temperature (RT) to 900 °C. As-deposited films grown at one atmospheric (APCVD) and lower pressures (LPCVD) are found to be inherently under a tensile and compressi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEntropy, enthalpy, and side arm porphyrins. 1. Thermodynamics of axial ligand competition between 3-picoline and a series of 3-pyridyl ligands covalently attached to zinc tetraphenylporphyrinF. Ann Walker and Mabry BensonCite this: J. Am. Chem. Soc. 1980, 102, 17, 5530–5538P…
The corrosion of mild steel in kraft chemical pulping equipment has been investigated by laboratory electrochemical testing in relevant caustic solutions. Potentiostatic polarization curves were obtained in alkaline electrolytes with additions of sulfur containing compounds known to exist in process liquors. By observ…
Taichi Usui, Katsuko Asari, Takashi Mizuno; Isolation of Highly Purified “Fucoidan” from Eisenia bicyclis and Its Anticoagulant and Antitumor Activities, A