Materials Literature
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The utilization by Escherichia coli K12 of raffinose as sole carbon source depends on a new raffinose transport system, an invertase and an alpha-galactosidase specified by the Raf-plasmid D1021. The alpha-galactosidase was purified to homogeneity from a mutant strain with constitutive synthesis of the enzyme. alpha-G…
この論文は国立情報学研究所の電子図書館事業により電子化されました。
The phase diagram, growth processes of extended-chain crystal and high pressure phase, and the temperature dependency of lattice parameter in polyethylene have been studied under high pressure up to 6000 kg/cm 2 using a new high pressure X-ray diffraction apparatus. The high pressure phase diagram obtained by micro-DT…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structure of zirconium monochloride. A novel phase containing metal-metal bonded sheetsDouglas G. Adolphson and John D. CorbettCite this: Inorg. Chem. 1976, 15, 8, 1820–1823Publication Date (Print):August 1, 1976Publication History Published online1 May 2002Published…
Integrated high-frequency transistors (f/SUB T/>3 GHz) with an arsenic implanted polysil emitter have been investigated. The results are compared with data of bipolar transistors made with the conventional planar technique. It is shown that better emitter efficiency higher current carrying capability, and improved emi…
A complete individualization of cotton tufts produced in an opening room is not easy, and hence the tuft weight distribution can be largely influenced by the technique used for tuft separation. Various research workers have arrived at different types of tuft weight frequency distribution. The present study describes a…
Abstract Magnetization measurements of polycrystalline NdCo 2 are reported as a function of temperature (4.2 to 200 K) and magnetic field (0.2 to 26 koe). Anomalies in the temperature dependence of the magnetization are attributed to a [110] to [100] spin rotation around 40 K. Single‐ion crystal field calculations whi…
An anomalous longitudinal magnetoresistance which decreases with increasing magnetic field in an appropriate specimen geometry has been investigated for semimetals. An intuitive explanation of this phenomenon is given in terms of geometry of inhomogeneous currents under the influence of a magnetic field. Experimental…
The isotropic and anisotropic 19F NMR shifts for Yb3+ doped into alkaline earth fluorides is calculated using a covalent model for the spin transfer. The good agreement between theory and experiment is strong evidence for the covalent model being the correct model in the case of Yb3+. The calculations reveal that the…
The electrochemical behavior of sulfur and sulfide in molten NaAlCl 4 saturated with NaCl has been investigated at different temperatures and with different electrode materials. In melts containing sulfur one reduction and one oxidation wave are seen at tungsten and glassy carbon electrodes. At platinum two reduction…
1. Desmosine and isodesmosine were separated by ion-exchange and paper chromatography, after acid hydrolysis of purified elastin from beef ligamentum nuchae. The fractions obtained by ion-exchange chromatography were clearly mixtures of related compounds. The desmosine fraction could be resolved into seven compounds a…
Crystal data of three compounds in the system SeO2–CuO have been determined from X-ray single-crystal and powder studies. CuSe2O5 is monoclinic, space group Cc or C2/c, with a = 12.254 (5), b = 4.858 (3), c = 7.960 (3) Å, β = 110.7 (1)°, Z = 4. CuSeO3 is monoclinic, space group P21/c, with a = 7.718 (2), b = 8.266 (3)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransition metal ions in high formal oxidation states. Structural characterization of the nickel and copper complexes of the 1,1-dicarboethoxy-2,2-ethylenedithiolate ligandD. Coucouvanis, F. J. Hollander, and M. L. CafferyCite this: Inorg. Chem. 1976, 15, 8, 1853–1860Publica…
An examination has been made of the effects of carbon, nitrogen, molybdenum, titanium, and niobium on the occurrence of 485°C embrittlement in 25%Cr ferritic stainless steels. All these alloying additions increase the rate of precipitation, as measured by the rate of age hardening. In general the tensile strength and…
Heat capacity of BaTiO 3 has been measured in the vicinity of the ferroelectric-to-paraelectric transition temperature by using both the crystal grown by the top-seeded solution technique and that grown by the flux method. It is found that the temperature dependence of the heat capacity over a rather wide temperature…
Abstract The gelatin film is stretched more 100% over 75% relative humidity, while the dried gelatin extended only several percent. In this experiment the gelatin film was stretched in a solution of water and ethanol. The sample was extended to 650% of its initial length when ethanol/water was 1.5(w/w) at 30°C. The wi…
A review is given of the use of tolyltriazole (also called tolutriazole, but more strictly 4-, 5-, or 6-methyl-1 H-benzotriazole) as an inhibitor for copper and brass in a variety of corrosive environments. The effect of a pretreatment with an aqueous solution of tolyltriazole was not as effective as one with benzotri…
Gallium is a metal that literally melts in your hand. It has low toxicity, near-zero vapor pressure, and a viscosity similar to water. Despite possessing a surface tension larger than any other liquid (near room temperature), gallium can form nonspherical ...Read More
Abstract In Cu‐doped ZnO crystals the Fermi level is varied by additional donor doping (In or H) in the energy range 0 to 250 meV below the bottom of the conduction band. The results of optical absorption and electrical conductivity measurements carried out in these crystals can be explained by using the model in whic…
Abstract Die wasserfreien Tetrathioantimonate von K + , NH 4 + und Na + kristallisieren kubisch im (NH 4 ) 3 SbS 4 ‐Typ, während bei den bisher bekannten Alkalitetrathioarsenaten und ‐phosphaten der (NH 4 ) 3 AsS 4 ‐Typ beobachtet wird. Die Ausbildung der beiden unterschiedlichen Strukturtypen wird auf Packungseffekte…