Materials Literature
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The optical constants n and k of Inconel alloy films are presented for film thicknesses between 200 and 900 Å for the visible and near infrared spectrum. Values of n and k were determined from ellipsometric measurements and, separately, from reflection and transmission measurements at normal and oblique incidence. Res…
Methods and instrumentation are desnibed for determining the frictional properties of continuous filament textile yarns over a wide speed range and for the measurement of antistatic properties. The effect of guide and fiber surface roughness and speed on friction are presented. A discussion of the stick-slip phenomeno…
The existence range of the one-dimensional long-period ordered alloy Cu 3 Pt (L1 2- s ) on the equilibrium diagram has been determined by X-ray diffraction, single crystal specimens having been prepared and quenched at various temperatures. As the result it has become clear that there occurs a two-step transition L1 2…
<div class="htmlview paragraph">The dent resistance of cold-rolled low-carbon steel sheets is shown to be proportional to the product of the yield strength and the square of the thickness. However, the yield-strength value used in this relation must be the yield strength appropriate to the strain rate of the par…
Knoop hardness is examined as a function of indenter orientation on the (0001), {10 0} and {11 0} surfaces of TiB 2 , ZrB 2 and HfB 2 . The hardness of the two kinds of prismatic planes and the hardness anisotropy of each plane are higher than those of the basal plane in TiB 2 . The hardness of the basal plane tends t…
The effect of varying electron concentration on the magnetic ordering in the ternary intermetallic compounds DyCo3−xNix, DyFe3−xNix, HoCo3−xNix, HoFe3−xNix, with 0&lt;x&lt;3, has been investigated by saturation magnetization studies. The results show a filling of the Co and Fe bands and also a polarization of…
The structure of the mineral kernite has been reinvestigated, using a new set of accurate X-ray diffractometer data. The conventional least-squares refinement leads to a final value of R.(F) of 3.6 percent (R(F) = 3.4Vo). Determination of the net atomic charges with the Extended L-shell (ELS) method gives partial posi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSodium-sulfur system. II. Polysulfides of sodiumDjong-Gie OeiCite this: Inorg. Chem. 1973, 12, 2, 438–441Publication Date (Print):February 1, 1973Publication History Published online1 May 2002Published inissue 1 February 1973https://pubs.acs.org/doi/10.1021/ic50120a039https:…
Interfacial reactions and enhanced wetting or spreading of Na 2 Fe x Si 2 O 5+x and Na 2–2x Fe x Si 2 O 5 glasses on substrates of high‐purity (Marz) and commercial (Armco) iron were observed at 1000°C at low partial pressures of O 2 and Na. Reactivity increased with increasing O/Si ratio in the glass, with the purity…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSodium-sulfur system. I. Differential thermal analysisDjong-Gie OeiCite this: Inorg. Chem. 1973, 12, 2, 435–437Publication Date (Print):February 1, 1973Publication History Published online1 May 2002Published inissue 1 February 1973https://pubs.acs.org/doi/10.1021/ic50120a038…
The crystal structures of clinohumite [Mgs.rzFeo.ooMno.oeTio.ozCao.oor(SiOe)rFr.orHo.gaoo,osi a:4.jMt(2);b:10. 2501(5);c:t3.663 5(3)A; d:100.786(2);P2 t/blandtitanocli nohumite [Mgz a:Fer orMno o;Tio rrcao oor(Sior)aoHr.oroo.goi a : 4.7451(8); b : 10.288(2); c : 13.709(3)A; a = 101.00(2).; P2tlblhave been refined by t…
The existence of anionic conductivity in halogen‐containing lead silicate glasses was proved by Tubandt tests and electron microprobe examinations. Direct‐current volume resistivities, loss tangents, and dielectric constants are reported for analogous glasses containing F − , Cl − , Br − , and I − and compared to thos…
Cultures of human diploid fibroblasts were labeled with radioactive proline and glycine, and the precursor of collagen (procollagen) in cells and medium was characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. A covalently assembled molecule with the composition (pro alpha1)(2).pro alpha2 (appro…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the reaction of amine complexes of cobalt(II) protoporphyrin IX dimethyl ester with oxygen. Evidence for hydrogen bonding with coordinated oxygenDennis V. Stynes, H. Cleary. Stynes, James A. Ibers, and Brian R. JamesCite this: J. Am. Chem. Soc. 1973, 95, 4, 1142–…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic absorption spectrum of nitrate ion and boron trihalidesH. J. Maria, J. R. McDonald, and S. P. McGlynnCite this: J. Am. Chem. Soc. 1973, 95, 4, 1050–1056Publication Date (Print):February 1, 1973Publication History Published online1 May 2002Published inissue 1 Febru…
Measurements of the angular dependence of the upper critical field ${H}_{c2}$ in the transition metal dichalcogenides Ta${\mathrm{S}}_{2}$, Ta${\mathrm{S}}_{2}$-(pyridine), Ta${\mathrm{S}}_{1}$${\mathrm{Se}}_{1}$, Ta${\mathrm{S}}_{1}$${\mathrm{Se}}_{1}$-(pyridine), Ta${\mathrm{S}}_{1.2}$${\mathrm{Se}}_{0.8}$, and Ta${…
Abstract Three protein kinases were separated from bovine epididymal spermatozoa by using DEAE-Sephadex ion exchange chromatography and Sephadex G-100 gel filtration. The molecular weights of these three kinases were estimated to be 120,000, 78,000 and 56,000 by the use of Sephadex G-100 gel filtration. The activity o…
Dislocation lines with variable Burgers vectors can exist in glasses and there is now experimental evidence for this, especially in metallic glasses. The kinematics and dynamics of their motion is discussed. It is suggested that dilatance at the core of a moving dislocation determines the viscous drag that acts on it…
The n-particle space of a configuration interaction (CI) calculation, spanned by configuration state functions (CSF's), is partitioned into subspaces defined, relative to a set of zeroth-order CSF's, by the type of orbital excitation and by the lowest order of the Rayleigh-Schrödinger perturbative correction contribut…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of particle growth. I. Ammonium nitrate from the ammonia-ozone reactionR. G. De Pena, Kenneth Olszyna, and Julian HeicklenCite this: J. Phys. Chem. 1973, 77, 4, 438–443Publication Date (Print):February 1, 1973Publication History Published online1 May 2002Published i…