Materials Literature
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Abstract The chemical, physical, and mineralogical properties of Sable and Darmstadt soils were studied to determine the value of solum and subsolum material as mediums for plant growth. Sable silty clay loam from western Illinois has nearly ideal physical and chemical properties for plant growth, while the more weath…
X-ray phototelectron spectroscopy was used to determine the binding energies of the core electrons in Ag- or Cu-doped amorphous As 2 Se 3 films. Chemical shifts of the constituent elements indicate the electron transfer from Ag or Cu to As and Se upon doping. Charged defects are induced to As-Se bonds. The mechanism o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLiquidus temperatures in the calcium carbonate-calcium hydroxide-calcium oxide and calcium carbonate-calcium sulfate-calcium sulfide ternary systems. 1M. C. Fuerstenau, C. M. Shen, and B. R. PalmerCite this: Ind. Eng. Chem. Process Des. Dev. 1981, 20, 3, 441–443Publication D…
Abstract The microstructure of both GR and NR is comprised of cis -polyisoprene units, resulting in a physicochemical similarity between the two rubbers. However, the processing and vulcanizate properties of guayule and NR differ when the former is substituted in standard NR formulations. Since GR and NR do not contai…
The equilibrium oxygen pressures of Mn‐Zn ferrites with various oxygen/metal ratios were obtained at 1000° to 1400°C. The method used is the dependence of the lattice constant on oxygen content obtained in Mn ferrites and the relation between oxygen content and the equilibrium oxygen pressure found in Mn and Ni ferrit…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTungsten(V)-oxo and tungsten(VI)-dioxo complexes with oxygen, nitrogen, and sulfur ligands. Electrochemical, infrared, and electron paramagnetic resonance studiesC. A. Rice, P. M. H. Kroneck, and J. T. SpenceCite this: Inorg. Chem. 1981, 20, 7, 1996–2000Publication Date (Pri…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSteroidal Sapogenins From Leaves of Cordyline SpeciesGerald Blunden, Jaffer A. Jaffer, Kenneth Jewers, and William J. GriffinCite this: J. Nat. Prod. 1981, 44, 4, 441–447Publication Date (Print):July 1, 1981Publication History Published online1 July 2004Published inissue 1 J…
ABSTRACT Transmission electron microscopy studies of protein foams revealed the presence of a layer of cross‐linked polypeptides at the surface of the film enveloping an air inclusion. Scanning electron microscopic examination of a whipped solution with high levels of ovomucin and without lysozyme showed that the prot…
The efficacy of the microelectrode cycle life index in predicting the influence of expander on the pasted electrode performance was carried out from the simultaneous testing of four lignosulfonate expanders by the microelectrode and pasted electrode. Expander was included in the test solution for the microelectrode an…
Many postulated nuclear reactor accidents result in dryout or film boiling within the nuclear core. To minimize fuel rod damage and potential rod failure, safe or lower cladding fuel temperatures must be reestablished by encouraging coolant-cladding contact. This process is commonly referred to as quenching or rewetti…
The diffusion equation for an illuminated Schottky barrier is solved for a finite lifetime of photoinjected minority carriers within the barrier. The general solutions are related to parabolic cylinder functions when diffusivity and mobility are constant. These solutions are subject to the usual boundary conditions th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly(phenylquinoxalines) containing phenylethynyl groupsP. M. HergenrotherCite this: Macromolecules 1981, 14, 4, 898–904Publication Date (Print):July 1, 1981Publication History Published online1 May 2002Published inissue 1 July 1981https://pubs.acs.org/doi/10.1021/ma50005a00…
Abstract Die drawing, a new process for the production of oriented thermoplastic rods with an ultrahigh modulus of elasticity, involves drawing an isotropic workpiece through a converging die at temperatures below the polymer melting point. Die drawing of polypropylene is described, but the process is applicable to an…
The combination of an inner layer of nacre and an outer layer of simple prisms is thought to be phylogenetically the oldest molluscan shell type. Although nacre is very strong it is not as widely used as crossed‐lamellar shell. Factors other than tensile strength or modulus of elasticity, such as resistance to abrasio…
Abstract AgBO 2 wurde durch Feststoffreaktion der binären Komponenten unter Anwendung von erhöhtem Sauerstoffdruck [p(O 2 ) = 2 kbar] dargestellt. Die Kristallstruktur von AgBO 2 (Raumgruppe Pbcn; a = 844,1(2); b = 868,0(1); c = 1974,1(5) pm) zeigt, daß ein BO 2 ‐Isopolyanion vorliegt, in dem Bor zu gleichen Teilen te…
The solar absorption properties of thin composite films of coevaporated Pt and Al2O3, formed with a graded composition-depth profile, are compared to those of an identical film overcoated with a microscopically textured layer of SiOx. The composition grade of the metal-dielectric composite and the surface texturing of…
Abstract The thermal diffusivity and conductivity of the isotropic and drawn samples of five semicrystalline polymers—nylon 6, poly(ethylene terephthalate), poly(butylene terephthalate), polybutene‐1, and poly(4‐methylpentene‐1)—were measured by the flash method over the temperature range 100–350 K. The temperature de…
ABSTRACT Breading losses from poor adhesion of coating to food products is a major concern in the battered and breaded foods industry. The primary aim of this study was to determine effects of protein and gum sources and amounts on the adhesion of a commercial breading mix to poultry skin. Protein sources used were wh…
When excited by the 6471-\AA{} line from a krypton laser, blue and uv fluorescence has been observed in La${\mathrm{F}}_{3}$: ${\mathrm{Tm}}^{3+}$ at room temperature. The main emission features have been identified as originating from the $^{1}D_{2}$ and $^{1}G_{4}$ levels, reached by a stepwise excitation process. A…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLow-temperature EPR studies of highly anisotropic low-spin (protoporphyrinato)iron(III) complexesCatharina T. Migita and Masamoto IwaizumiCite this: J. Am. Chem. Soc. 1981, 103, 15, 4378–4381Publication Date (Print):July 1, 1981Publication History Published online1 May 2002P…