Structure and viscosity of molten borates and phosphates
Viscosity measurements of molten borates and phosphates compared with theory of silicate slag ion activity
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Viscosity measurements of molten borates and phosphates compared with theory of silicate slag ion activity
A Xanthomonas oryzae pv. oryzae gene with sequence similarity to an Escherichia coli phosphate-binding protein gene (phoS) produces a periplasmic protein of apparent M(r) 35,000 when expressed in E. coli. Amino terminal sequencing revealed that a signal peptide is removed during transport to the periplasm in E. coli.
Modified metal phosphates for thermal-control surfaces investigating stability to ultraviolet, thermal and vacuum environments
Organic phosphate compound synthesis, purification and use in detection of enzymatic activity in soils by fluorescence after biological oxidation
Optical properties of phosphate coatings for thermal control
Zirconium phosphate membranes for intermediate temperature hydrogen-oxygen fuel cells
Catalytic hydrolysis of phosphate ester bonds by proteinoids /thermal polymers of amino acids/, discussing effects of enzyme inhibitors on reaction
Electrocaloric effect from 78-130 K on crystalline potassium dihydrogen phosphate, showing quadratic dependence on applied field /and polarization/ in paraelectric phase
Purification and properties of diphosphopyridine nucleotide-linked glycerol 3-phosphate dehydrogenases from chicken breast muscle and liver
Calcium phosphate crystals precipitation from nutrient gel to determine role of gelatinous ground substance in calcification
Adenosine phosphates hydrolysis in solutions containing Ca ions and in synthetic seawater, investigating living systems energy transfer and prebiological evolution
Structural and functional properties of phosphates in biochemical reactions, discussing linkages
P32 labeled organic phosphate esters in water extracts of soil
Effects of dimethyl-dichlorovinyl phosphate and sodium chloride solution on stress corrosion cracking of aluminum and steel
Urea-inorganic phosphate mixtures as prebiotic nucleoside phosphorylating agents
Hydrogen atoms trapped in gamma irradiated calcium phosphates, studying radiation yields, electron paramagnetic resonance line widths, dose saturation and relaxation
The use of potassium dideuterium phosphate (DKDP) light valves for optical data processing is discussed. The operating principles and structure of optically and electron beam addressed DKDPs are compared, and specifications for both devices given. Optically addressed DKDPs are capable of higher resolution and contrast, but both systems represent viable real time spatial light modulators adaptable to optical processing. Examples of real time data processing performed by the DKDPs include: image addition and subtraction; reduction of noise introduced by scattered light in recording media; reconstruction of computer generated and acoustic holograms; reconstruction of synthetic aperture radar data; retrieval of three-dimensional information in X-ray diagnoses; radar signal processing and display; and optical pattern recognition and correlation of images, which has applications for missile guidance systems.
The isotopic compositions of uranium and lead in Ca-Al-rich inclusions from the Allende chondrite and in whitlockite from the St. Severin chondrite and the Angra dos Reis achondrite are reported. Isoptopic analysis of acid soluble fractions of the Allende inclusions and the meteoritic whitlockite, which show isotopic anomalies in other elements, reveals U-235/U-238 ratios from 1/137.6 to 1/138.3, within 20 per mil of normal terrestrial U abundances. The Pb isotopic compositions of five coarse-grained Allende inclusions give a mean Pb-207/Pb-206 model age of 4.559 + or - 0.015 AE, in agreement with the U results. Pb isotope ratios of two fine-grained inclusions and a coarse-grained inclusion with strong mass fractionation and some nonlinear isotopic anomalies indicate that the U-Pb systems of these inclusions have evolved differently from the rest of Allende. Th/U abundance ratios in the Allende inclusions and meteoritic phosphate are found to range from 3.8 to 96, presumably indicating an optimal case for Cm/U fractionation, although the normal U concentrations do not support claims of abundant live Cm-247 or Cm-247/U-238 fractionation at the time of meteorite formation, in contrast to previous results. A limiting Cm-247/U-235 ratio of 0.004 at the time of meteorite formation is calculated which implies that the last major r process contribution at the protosolar nebula was approximately 100 million years prior to Al-26 formation and injection.