Materials Literature
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The temperature-composition phase diagram for the GeSe-GeTe system was determined between 25 and 675°C using high temperature X-ray powder diffraction techniques (1). The orthorhombic phase extends from 100 to 92 ± 3 mol% GeSe and is stable below 651 ± 5°C. For compositions between 86 ± 3 and 58 ± 3 mol% GeSe a hexago…
The purpose of this study is to develop high strength nickel-base single crystal alloys for gas turbine blades.
Tetrathiafulvalene (ttf) reacts with SnX4(X = Cl or Br) in MeCN to give [ttf]2[SnX6]. The corresponding tetramethyltetraselenafulvalene (tmtsf) salt also is obtained as an acetonitrile solvate, [tmtsf]2[SnCl6]·MeCN, by the reaction of tmtsf with SnCl4 in MeCN. On the other hand, electrocrystallization of ttf and tmtsf…
Thermal effects on tensile strengths of advanced composite systems have been determined for exposure times of 100 to 50,000 hours (5.7 years). Exposures were conducted at both ambient and reduced pressures at two temperatures for each composite. At the completion of the various aging periods, specimens were removed fr…
In the complex [Os(BH4)H3{P(c-C5H9)3}2](c-C5H9= cyclo-C5H9), prepared quantitatively from the reaction of [OsH6{P(c-C5H9)3}2] with BH3·thf, (thf = tetrahydrofuran), the tetrahydroborate ligand is bound to the metal by two bridging hydrogen atoms which, at 90 °C, exchange rapidly only with the hydride ligands on osmium.
ABSTRACT TESTS were carried out to define the effects on airflow resistance of adding various percentages of various sizes of fines to whole corn kernels. The relationship between clean corn multiplier and percentage fines was defined for seven size grades of fines. Effect of fines on fan power requirements for aerati…
X 537.312.62 . . , . . 1. 415 2. (TMTSF) 2 X (BEDT -TTF)X 416 ) (TMTSFUX 416 ) (BEDT -TTF)X 419 3. 419 ) 419 ) () 423 4. 425 5. 426 6. ( ) 431 7. 433 435 1.
The new compound Ba 5 (GaS 4 ) 2 crystallizes in the orthorhombic system (space group: Cmca) with lattice constants a = 2249.4(12) pm, b = 1214.6(8) pm, c = 1188.7(8) pm. In the structure there are isolated GaS 4 5- -tetrahedra. According to stoichiometry and structure this compound belongs to the complex salts, and i…
(2-Nitro-5,10,15,20-tetraphenylporphyrinato)copper(II)(1) reacts with sodium benzylate or sodium methoxide in dimethylformamide by a novel aromatic nucleophilic substitution-nucleophilic addition sequence in which hydrogen is the leaving group to give the corresponding 2,2-dialkoxy-3-dihydroporphyrins which are effici…
Experiments have been performed to investigate the effect of cooled-plate characteristic on frost formation under the condition of forced convection. Two kinds of plates having the different contact angles to water, were utilized. Special attention was focused on the incipient phenomena of the effect of the plate cont…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal cracking of kerosineCarl E. Van Camp, Paul S. Van Damme, and Gilbert F. FromentCite this: Ind. Eng. Chem. Process Des. Dev. 1984, 23, 1, 155–162Publication Date (Print):January 1, 1984Publication History Published online1 May 2002Published inissue 1 January 1984https…
The tight binding calculation of the orbital magnetic susceptibility in Graphite Intercalation Compounds is reexamined to account for the different behaviour of Donor and Acceptor Compounds. The two dimensional tight binding model for π electrons treating symmetrically valence and conduction bands cannot explain exper…
A new device has been developed to measure the heat transfer properties of apparel fabrics and is reported in this paper with some examples of an application of this device. The basic functions of this device are as follows : (1) Detection of the heat absorption by a fabric ; This absorption starts just after the touc…
We have examined the relationship between surfactant structure and the sensation of tightness which ordinarily occurs on facial skin a few minutes after face washing. Most anionic surfactants cause various degrees of skin tightness, the order being, TEA-lauryl phosphate < potassium myristate = TEA-cocoyl glutamate < s…
The crystal structure of Sr-gehlenite Sr 2 Al 2 SiO 7 is tetragonal with space group P [unk]2 1 m , a = 7.820(1), c = 5.264(1) Å, Z = 2 and D x = 3.821 g · cm −1 , and was refined to R = 3.6% using 345 non-equivalent reflections. This compound is confirmed to be isotypic with gehlenite Ca 2 Al 2 SiO 7 . In this Sr-geh…
A range of diquaternary salts of 4,4′-bipyridine and 3,8-phenanthroline were prepared and subsequently screened using electrochemical and spectroscopic techniques. It was determined that the stability of the radical film deposited on cathodic reduction of aqueous solutions of these salts may be strongly influenced by…
MgO–NiO solid solutions can be reduced by H2 in two steps: in the first (temperature range 673–1093 K) mainly the Ni2+ ions located on the surface are involved, while in the second (T > 1093 K) those located in the bulk are also reduced.The dimensions of the Ni particles formed during the reduction process increase wi…
Transport coefficients measurements (electrical conductivity, Hall effect, thermoelectric power) have been performed on monocrystalline MoTe2 samples in a wide temperature range (77-700 K). The samples were prepared by a based Te flux method. Experimentals results are interpreted on the basis of a p-type semi-conducto…
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A new macrocyclic N-bridged species of formula [PcFe–N–FePc](Pc = phthalocyaninato anion, C32H16N82–) has been prepared by reaction of PcFe with NaN3 in α-chloronaphthalene and structurally and electronically characterized by i.r., visible, X-Ray powder, and e.s.r. measurements: one-electron oxidation leads to the cat…