Materials Literature
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Temperature and intensity dependence of steady state photoconductivity is studied in amorphous thin films of Ge22Se68Bi 10 prepared by vacuum evaporation. Photoconductivity increases exponentially with temperature between 310 K and 410 K and no maxima is found in this temperature range. The ratio Iph/ Id is about 6 at…
During the spring (H-04/82: october 11-27, 1982)carried out by the Fishery Research Vessel "Dr.E.Holmberg", the distribution of temperature, salinity, nutrients concentration and photosynthetic pigments were studied at the "Rio de la Plata" maritime front. The presence of Sub-Tropical coastal waters in only station di…
Abstract This article sets out to describe and account for the chemical and physical consequences of the presence of gross disorder in solids. Knowledge of the structure of such disordered materials is an obvious prerequisite to a further understanding of other properties and behavior, and our current knowledge of the…
Polymeric materials, although they are not volatile themselves, may be analysed by gas chromatography (GC) through the use of analytical pyrolysis. Because the fragmentation pattern produced by heating is reproducible, the pyrolysates provide much information about the original macromolecule of which they were a part.…
In order to evaluate formability of silhouette, drape coefficient obtained from circular specimen has been used.In this study, drape cofficient of lady's dress fabrics which are used mainly for one-piece dress or blouse is measured by FRL drape meter.And relationship between drapability and mechanical properties of fa…
Iridium(II) octaethylporphyrin dimer, [Ir(OEP)]2, has been prepared by photolysis of (OEP)IrCH3 in C6D6 solvent, and found to undergo alkene insertion and oxidative addition of alkyl C–H bonds.
Mixed uranium-plutonium monocarbide (MC) with a controlled amount of mixed sesquicarbide (M2C3) will be used as driver fuel for the first time in the world in the fast breeder test reactor (FBTR) at Kalpakkam, India. The mixed-carbide fuel for the FBTR has been developed on the basis of indigenous resources of plutoni…
The single-crystal X-ray structure of K4H2[P2W21O71(OH2)3]·28H2O [space group P63/mmc, a= 16.295(2), c= 19.771(5)Å, and Z= 2; Mo radiation, R= 0.037 for 1 042 unique data] has been determined and the 183W n.m.r. spectrum of the anion in H2O–D20 has been recorded. The anion has true point symmetry C2v but occupies a D3…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMixed-metal gold clusters. Synthesis and x-ray structural characterization of [Au5Re(H)4(PPh3)7](PF6)2 and [Au3Rh(H)(CO)(PPh3)5](PF6)Paul D. Boyle, Brian J. Johnson, Angela Buehler, and Louis H. PignoletCite this: Inorg. Chem. 1986, 25, 1, 5–7Publication Date (Print):January…
Volume 10 addresses materials characterization from an engineering perspective, describing the capabilities and limitations of various analytical tools and what they reveal about the composition, structure, and state of engineering materials. It examines optical metallography, electron microscopy, diffraction, chromat…
Plastics: microstructure, properties, and applications , Plastics: microstructure, properties, and applications , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
The basicity and Cu(II) ion complexation of polymers containing amino acid residues, carrying a tertiary amino group in the main chain and a carboxylic group as the side-chain substituent, have been studied in aqueous solution by potentiometric, viscosimetric, and spectrophotometric techniques. Both protonation consta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiamagnetic anisotropy of organometallic moieties: .chi. values for M(CO)3 (M = Cr, Mo, W) and for ferroceneMichael J. McGlinchey, Robert C. Burns, Roger Hofer, Siden Top, and Gerard JaouenCite this: Organometallics 1986, 5, 1, 104–109Publication Date (Print):January 1, 1986…
A dental adhesive resin containing 4-META was bonded to three different surface states, an as-polished surface and two oxidized surfaces, of a 70 mass % Co-Cr alloy. The surface structure of the alloys was analyzed by ESCA and reflection electron diffraction. The relationship between the bonding strength and surface s…
Hydrazinium lanthanide complexes of formula N2H5Ln(SO4)2·H2O, where Ln = La, Ce, Pr, Nd, or Sm, have been prepared and investigated by means of i.r. and electronic spectroscopy, thermal analysis, and magnetic susceptibility measurements. The crystal structure of the neodymium compound has been determined by convention…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSupported platinum, palladium, and rhodium catalystsRobert L. Burwell Jr.Cite this: Langmuir 1986, 2, 1, 2–11Publication Date (Print):January 1, 1986Publication History Published online1 May 2002Published inissue 1 January 1986https://pubs.acs.org/doi/10.1021/la00067a001http…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of polymer structure and incorporated salt species on ionic conductivity of polymer complexes formed by aliphatic polyester and alkali metal thiocyanateMasayoshi Watanabe, Masahiro Rikukawa, Kohei Sanui, and Naoya OgataCite this: Macromolecules 1986, 19, 1, 188–192Pu…
The production of an exopolysaccharide (mucin) by some Staphylococcus epidermidis strains facilitates bacterial adhesion to prosthetic vascular grafts and may play an important role in adherence-mediated growth. An in vitro model was developed to measure the differential adherence of mucin-producing (RP-12) and nonmuc…
Description STP 927 presents findings on the durability of mechanically jointed structures. Specifically, this publication contains basic and applied research covering bridge structures, airframes, adhesive bonding, welding and metallic, and composite materials.
The dielectric relaxation of glycerol and n-propyl alcohol in the supercooled liquid state has been investigated at frequencies from 5 Hz to 13 MHz and at pressures up to 1 GPa. The high-pressure dielectric cell and the measurement procedures are described in detail. A significant broadening of the loss peak is observ…