Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract Platinum particles were prepared by reducing the hydrogen hexachloroplatinate extracted in organic solvents from an aqueous solution by these extractants:dioctadecyldimethylammonium chloride(DDAC), trioctylmethylammonium chloride(TMAC), and trioctylphosphine oxide(TOPO). The extraction ratio of platinum(IV) i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExperimental study and kinetic modeling of propene oxidation in a jet stirred flow reactorP. Dagaut, M. Cathonnet, and J. C. BoettnerCite this: J. Phys. Chem. 1988, 92, 3, 661–671Publication Date (Print):February 1, 1988Publication History Published online1 May 2002Published…
Abstract Using the concept of filler coating, a study has been made of the morphology and mechanical properties of polypropylene/talc/elastomer composites with a series of polar components as added elastomers. Both impact strength and stiffness of the blends were better than those of polypropylene homopolymer. Most of…
Metallographic and fractographic observations of crack growth in pure magnesium in dry air, aqueous, and liquid alkali metal environments are described. Crack growth in dry air at ambient temperatures was macroscopically brittle and occurred parallel to {101¯ X} planes or along grain boundaries, but fracture surfaces…
A historical cohort mortality study was conducted among 6,781 white male employees from a nuclear weapons materials fabrication plant for the years 1947-1979. Exposures of greatest concern are alpha and gamma radiation emanating primarily from insoluble uranium compounds. Among monitored workers, the mean cumulative a…
We present x-ray diffraction measurements of freely suspended single-orientation columnar-phase strands of 2,3,7,8,12,13-hexa(-n-tetradecanoyloxy)truxene [(${\mathrm{C}}_{13}$${\mathrm{H}}_{27}$COO${)}_{6}$-TX] which show a dramatic difference between the ordering of the rigid, planar central cores and the flexible hy…
A field isolate of Desulfovibrio desulfuricans was grown in defined medium in a two-stage continuous culture apparatus with different concentrations of phosphate in the feed medium. The first state (V1) was operated as a conventional chemostat (D = 0.045 h) that was limited in energy source (lactate) or phosphate. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMorphology control of binary polymer mixtures by spinodal decomposition and crystallization. 2. Further studies on PP/EPRNobuyuki Inaba, Takeshi Yamada, Shyunichi Suzuki, and Takeji HashimotoCite this: Macromolecules 1988, 21, 2, 407–414Publication Date (Print):February 1, 1…
Several addition compounds of the amino acid betaine and inorganic acids were found in the last years to possess structural, ferroelastic, ferroelectric or antiferroelectric phase transitions. As well commensurate as incommensurate phases are observed. The materials are betaine phosphate (antiferroelectric), betaine a…
<div class="htmlview paragraph">A transient three-dimensional model has been developed to simulate the thermal and conversion characteristics of nonadiabatic monolithic converters operating under flow maldistribution conditions. The model accounts for convective heat and mass transport, gas-solid heat and mass t…
A shear‐lag analysis is presented for estimating sliding friction stress at fiber‐matrix interfaces in ceramic‐matrix composites using the single‐fiber push‐out test. The analysis includes an approximate correction for the increased interfacial compression and, therefore, the interfacial friction stress arising from t…
Abstract In alkali chlorides heavily doped with Cu + ions, CuCl microcrystals of different sizes are grown under different heat treatments. Their size and shape are studied using small‐angle X‐ray scattering. A clear correlation is established between the microcrystal size and the blue shift of the exciton luminescenc…
The recent discovery of ``chevron'' structured smectic-C (SC) layers in surface-stabilized ferroelectric liquid-crystal (SSFLC) cells [T. P. Rieker, N. A. Clark, G. S. Smith, D. S. Parmar, E. B. Sirota, and C. R. Safinya, Phys. Rev. Lett. 59, 2568 (1987)] enables the understanding of many commonly observed features of…
The main purpose of this report is to present an analysis of the ballistic behavior of the fragment-simulating projectile (FSP)-nylon cloth system. For a set of V c determinations, plots of V r versus V s can be adequately represented by hyperbolas. The energy lost by an FSP after complete passage through a nylon ball…
Auf äußerst milde Weise stabilisiert ist Borabenzol 3 im matrixisolierten Borabenzol-Stickstoff-Addukt 4, das sich IR-spektroskopisch nachweisen ließ. Generell gilt, daß Boraarene und Boraethene nur zu fassen sind, wenn die Elektronenlücke am Bor durch einen Donor gefüllt ist. 4 bildet sich via 3 bei der Blitzpyrolyse…
Abstract The position and broadening of the Raman band associated with the phosphate symmetric stretching vibration in hydroxyapatite are simulated using a simple inter‐ and intra‐ionic potential. The results are compared with experimental values. This comparison was made as a function of the incorporation of carbonat…
Abstract The influence of flow velocity and particle size on the deposition of suspended alumina particles onto heat transfer surfaces was measured with two fouling probes, namely, a heated cylindrical rod in an annulus and a coiled wire in crossflow. Additionally, the response of the fouled probes to such changes as…
Single-crystal diffraction data have been recorded for a very small crystal of dimensions 8 x 18 × 175 ~rn 3. From these data the structure of piperazine silicate (EU 19) has been determined and refined to R = 0.094 for 490 observed reflections. Data collection for such a crystal has been made practicable by the high…
The solid-state structures of the linear-chain semiconductors K4[Pt2(P2O5H2)4X]•nH2O (X = Cl, Br, I), abbreviated Pt2Cl, Pt2Br, and Pt2I, have been studied. The X-ray crystal structures of Pt2Cl at 300 and 22 K and of Pt2Br at 19 K are reported. These structures show that Pt2Cl is a composite of alternating units of P…
Gradient-index rod lenses with a parabolic-index profile have been fabricated by a double Na-Ag ion-exchange process, and their optical characteristics have been evaluated. The numerical aperture and minimum focused spot diameter of the 2-mm diam rod lens were 0.58 and 2.5 microm for lambda = 0.63 microm, respectively…