Materials Literature
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Protein kinase activities and cyclic AMP binding capacity were investigated in human peripheral blood cells from leukemic patients and normal controls. Using [gamma 32P] ATP as phosphoryldonor, the phosphorylating activities were not found to be significantly different in either normal or leukemic cells when measured…
ABSTRACT A method for the statistical analysis of thermal process calculations is presented. First, an analysis is made of some of the uncertainties involved in thermal death time and heat penetration experiments. That information is then used to evaluate the consequences on process lethality calculations. A method is…
This paper discusses the two-dimensional problem of the diffraction of magnetoelastic shear waves by a rigid strip in an infinite elastic perfect conductor. This problem is reduced to a system of dual integral equations of which the solution provides the diffracted field. The method of steepest descent has been used i…
The high cost and lengthy preparation time of conventional ceramic bend-bar strength specimens is holding back the development of sintered silicon nitride ceramics having good high–temperature properties. The equipment now available for high–temperature sintering enables discs of high–strength sintered silicon nitride…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal-support effects on hydrogen and carbon monoxide heats of adsorption on titania-supported platinumM. A. Vannice, L. C. Hasselbring, and B. SenCite this: J. Phys. Chem. 1985, 89, 14, 2972–2973Publication Date (Print):July 1, 1985Publication History Published online1 May…
NMR measurements of 197 Au in Fe and FCC Co alloys with 0.1 at.% Au have been made using powdered specimens in zero external magnetic field at 1.7K. Electric quadrupole splitting has been found in the spectra. The spacing between the quadrupole-split component lines of FeAu alloy, Delta nu Q , has been determined by t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, structure, and magnetic properties of an asymmetric .mu.3-oxotriiron(III) complex: a new type of {Fe3O}7+ coreSergiu M. Gorun and Stephen J. LippardCite this: J. Am. Chem. Soc. 1985, 107, 15, 4568–4570Publication Date (Print):July 1, 1985Publication History Publis…
The stress‐optical coefficients of RO‐Pz05 glasses (R = Mg, Ca, Sr, Ba, and Zn) were measured, and the photoelasticity mechanisms were analyzed based on the equation expressing the relation among the photoelastic constants, the elastic moduli, and the refractive index of glasses. No simple relation was found between t…
Using the Pulsed-Sphere Method, the leakage spectra from hollow Be spheres of 4.5, 13.8 and 19.9 cm thickness have been measured. The predicted copious production of epithermal and thermal neutrons from the 13.8 and 19.9 cm spherical shells has been verified. A quantitative comparison of measured and calculated time-o…
The structure of (n-C13H27NH3)2ZnCl4 consits of two-dimensional layers of alkylamonium chains stacked alternately with layers of isolated ZnCl4 terrahedra. Consecutive layers are linked by H-bonds between the N and Cl atoms. In the temperature range from 20 to 50[ddot]C, five different phases could be identified, four…
Abstract Surface base property of magnesium oxide can be modified by the addition of metal ion. The addition of metal ion with larger ionic radius than Mg2+ causes the increase of the amount of surface base site, whereas the addition of metal ion with smaller ionic radius than Mg2+ shows not to be effective.
Zirconium alloy components can fail by hydride cracking if they contain large flaws and are highly stressed. If cracking in such components is suspected, crack growth can be minimized by following two simple operating rules: <list list-type="simple"><list-item>—components should be heated up from at least 30 K below a…
We have measured the magnetic field directly inside a thin, circular, parallel-plate capacitor as it is being charged. We find that this field varies linearly with distance from the axis, as is to be expected if a uniform displacement current flows between the plates. The measured slope of B vs r agrees with predictio…
Abstract : A need to exists to keep aircraft operators and maintenance personnel aware of the science and technology of corrosion as it applies to aircraft structures. This handbook provides information on the aircraft operating environment, corrosion theory, common airframe materials and their response to corrosion,…
Abstract It has been demonstrated that the number of particles of glass transferred to fabric is dependent upon fabric type and particle size but that the loss of particles is primarily determined by particle size.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDirect determination of nonradiative relaxation rates in nonfluorescent metallophthalocyaninesR. R. Millard and B. I. GreeneCite this: J. Phys. Chem. 1985, 89, 14, 2976–2978Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of methyl and hydride derivatives of permethylvanadocene and their reactions with carbon monoxideCalvin J. Curtis, James C. Smart, and John L. RobbinsCite this: Organometallics 1985, 4, 7, 1283–1286Publication Date (Print):July 1, 1985Publication History Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElimination reactions of .alpha.,.beta.-dihydroxysilanes: stereospecific synthesis of silyl enol ethers from vinylsilanesPaul F. Hudrlik, Anne M. Hudrlik, and Ashok K. KulkarniCite this: J. Am. Chem. Soc. 1985, 107, 14, 4260–4264Publication Date (Print):July 1, 1985Publicati…
The transformation of spherical alumina powders precipitated from an aluminum sulfate solution was studied using a combination of X‐ray diffraction and transmission electron microscopy. Particles calcined at 900°C consisted of poly‐crystalline γ‐alumina which transformed to essentially single‐crystal a‐alumina on furt…
P atrick , S heila & H olding , A.J. 1985. The effect of bacteria on the solubilization of silica in diatom frustules. Journal of Applied Bacteriology 59 , 7–16. Natural bacterial populations in samples of water from Loch Leven and Lough Neagh increased the rate of solubilization of frustule silica from an axenic…