Plastics : microstructure, properties and applications
Plastics: microstructure, properties, and applications , Plastics: microstructure, properties, and applications , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
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Acid-base and metal ion complex formation properties of polymers containing amino acid residues
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…
Diamagnetic anisotropy of organometallic moieties: .chi. values for M(CO)3 (M = Cr, Mo, W) and for ferrocene
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…
The Adhesion Mechanism of Dental Adhesive Resin to the Alloy
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 as a ligand: structural, thermal, spectroscopic, and magnetic studies of hydrazinium lanthanide di-sulphate monohydrates; crystal structure of the neodymium compound
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…
Supported platinum, palladium, and rhodium catalysts
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…
Effects of polymer structure and incorporated salt species on ionic conductivity of polymer complexes formed by aliphatic polyester and alkali metal thiocyanate
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…
Mucin Production by Staphylococcus epidermidis
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…
Fatigue in Mechanically Fastened Composite and Metallic Joints
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.
Dielectric relaxation of glycerol and n-propyl alcohol at high pressure
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…
Pentaco-ordinate silicon compounds in synthesis: chemo- and stereo-selective reduction of carbonyl compounds using trialkoxy-substituted silanes and alkali metal alkoxides
Carbonyl compounds are reduced with trialkoxy-substituted silane to the corresponding alcohols chemo- and stereo-selectively in the presence of alkali metal alkoxide under mild conditions; reduction occurs very smoothly by using an alkoxide derived from pinacol as a bidentate ligand.
Effects of dose and vesicle size on the pharmacokinetics of liposomes.
The blood concentration and urinary excretion after intravenous injection of liposomes containing 3H-inulin at three dose levels were examined in rats. A pharmacokinetic model for the dose dependency is postulated based on the results. The effects of vesicle size were also examined and the biological disposition was s…
Preparation, crystal structure, magnetic properties, and chemical reactions of a hexanuclear mixed valence manganese carboxylate
The antiferromagnetic mixed valence manganese complex [Mn6O2(Me3CCO2H)4(Me3CCO2)10] has been prepared by the reaction of MnCO3 with pivalic acid in toluene, and its molecular structure, determined by X-ray methods, comprises the new polynuclear cluster grouping of two tetrahedral oxygen-centred tetramanganeses cluster…
Novel transition metal-containing nematic and smectic liquid crystals
A new class of metal-containing liquid crystals, comprising a mesogenic organic ligand (nitrile or amine) co-ordinated to Pd, Pt, Rh, and Au, have been prepared and characterised.
Improvement of Edge Delamination Strength of Composite Laminates Using Adhesive Layers
A thin but tough adhesive inner layer placed in laminates at the proper interface has been found to give improved delamination strength. Static tension tests of laminates with (±302/˙903/∓302)T and (±35/0/90)s layups of graphite/epoxy show that the added adhesive inner layer effectively suppresses delamination until f…
Theoretical study of the influence of strain rate and temperature on the maximum strength of perfectly ordered and oriented polyethylene
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical study of the influence of strain rate and temperature on the maximum strength of perfectly ordered and oriented polyethyleneYves Termonia, Paul Meakin, and Paul SmithCite this: Macromolecules 1986, 19, 1, 154–159Publication Date (Print):January 1, 1986Publication…
Petrologic and geochemical comparison of the blueschist and greenschist units of the Catalina Schist terrane, southern California
In the Catalina Schist terrane, a nappe of blueschist facies melange is overlain by one of isoclinally-folded greenschist facies rocks. The blueschist unit contains meta-graywacke, metashale, metaconglomerate, greenstone, quartz schist, blueschist, and eclogite blocks in a fine-grained, schistose matrix which probably…
Synthesis of new ferroelectric liquid crystals and their novel ferroelectricity
A new type of ferroelectric liquid crystal, the 4′-alkoxybiphenyl-4-yl (2S,3S)-3-methyl-2-halogenopentanoates, has been synthesized; these compounds possess novel ferroelectricity, with spontaneous polarization and dielectric constant larger than 10–7 C/cm2 and 6000, respectively.
The Structure of Liquid N-Methylformamide by Means of X-Ray Diffraction and Ab Initio LCGO–MO–SCF Calculations
Abstract The liquid structure of N-methylformamide (NMF) has been investigated by the X-ray diffraction method and the ab initio MO-SCF method. The structure parameters within a molecule were obtained as follows: C=O : 122(1) pm, C(methyl)–N : 145(2) pm, C(carbonyl)–N : 134(2) pm, N···O : 222(4) pm, C(methyl)···O : 27…
Diffuse interface between polymers: Structure and kinetics
Abstract The interfacial structure and diffusion kinetics of two compatible polymers, poly(methyl methacrylate) and poly(vinylidene fluoride) are studied in the melt. The interdiffusion rates of the two components are found to be unequal, giving unequal diffusion coefficients, a net mass flow across the interface, and…