Materials Literature
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The aim of this study was to investigate the interfacial shear strength between ice and rubbers. Different rubber materials containing only a polymer and curing agent (peroxide) were tested with regard to surface wettability and interfacial shear strength. The effect of different grades and amounts of carbon black fil…
Zircaloy-4, in three different metallurgical forms (stress relieved, recrystallized, and β-quenched), was oxidized at 400°C, in steam, up to 95 days. For each sample, the fraction of tetragonal zirconia was measured by X-ray diffraction and Raman spectroscopy. These two techniques show the presence of several zones co…
A Ca(2+)-calmodulin dependent histone 3 kinase was partially purified from a low salt (150 mM NaCl) nuclear extract of mouse leukemia cells by calmodulin-Sepharose affinity chromatography. In vitro, the kinase activity transferred gamma-phosphate from ATP to histone 3 to form an acid-labile and alkaline-stable linkage…
The methods for producing magnesium are briefly described and its alloying behaviour is discussed with particular reference to the roles of individual alloying elements. Cast and wrought alloys are considered separately and particular attention is paid to microstructure–property relationships and corrosion behaviour.…
Fourier transform infrared matrix measurements carried out in conjunction with ab initio calculations reported in a companion paper by Rittby have resulted in the first identification of two fundamental vibrations, the C=C stretching mode ν3(σu)=1955.2 cm−1, and the Si–C stretching mode ν4(σu)=898.9 cm−1, of the SiC3S…
Abstract
Structural data derived from X-ray powder diffraction and EXAFS spectroscopy are presented for iodosylbenzene (PhIO) and the imido analogue, PhINSO2-4-Me-C6H4, which indicate that these compounds are polymeric in the solid state.
In a Ti–15V–3Cr–3Sn–3Al alloy, the internal structure of {332}〈113〉 deformation twins formed by weak rolling at 77 K was studied by means of transmission electron microscopy. {332}〈113〉 deformation twins accompany very characteristic dislocation loops attached to the twin/matrix interface in the matrix. Inside the twi…
A magnesium–manganese hydroxycarbonate with the hydrotalcite structure has been synthesized by coprecipitation from aqueous solutions of Mg2+ and Mn2+. According to temperature-programmed reduction data, 84% of the manganese is oxidized to Mn3+ during synthesis. Fourier-transform infrared spectroscopy, powder X-ray di…
The effect of water-soluble plasticizers viz propylene glycol (PG), glycerol and polyethylene glycol 600 (PEG) on the morphology and water resistance of polyvinyl alcohol (PVA) films was investigated. Polyvinyl alcohol films were cast from aqueous solutions, and their morphology studied using differential scanning cal…
The main sign characterizing brown ring disease (BRD) in Manila clam Ruditapesphilippinarum is a brown conchiolin deposit on the inner surface of the shell. Different stages of deposit formation and of the shell repair process were examined by means of binocular microscopy. The surface area of the deposit was quantrfi…
Three copper(I) complexes with phenazine (phz), [{Cu2(µ-X)2(µ-phz)}∞](X = l 1, Br 2 or Cl 3) were synthesized and their molecular structures and packing determined by single-crystal X-ray diffraction methods. The copper atoms of the Cu2I2 rhomboid in 1 are bridged by phz molecules to give an infinite linear chain and…
The crystal structure of NaY(MoO4)2 has been determined from powder X-ray diffraction data [space group I41/a, Z= 2, a= 5.19890(5)Å, c= 11.3299(1)Å]. The Na and Y atoms are disordered over the eight-coordinate sites of a scheelite structure. The crystal structure of Na5Y(MoO4)4 has been determined from single-crystal…
By measuring the surface pressure–area isotherm at an air-water interface, an ion-exchange adduct of synthetic saponite with trimethylstearylammonium cation has been revealed to form a monolayer which is transferred on a hydrophobic glass plate as an oriented multilayer film.
Strict self-assembly of complementary dianionic and dicationic tetrahydrogen bond donors and acceptors leading to infinite molecular chains in the solid state is achieved in aqueous solution using both directionally controlled hydrogen bonding and ion-pairing electrostatic interactions.
Intermetallic precipitates are known to play a critical role in the oxidation process of Zircaloys. Since under irradiation they undergo structural changes, a specific study was conducted to analyze whether these transformations modify the oxidation behavior of the Zircaloy-4. Oxidation kinetics in autoclave were meas…
Abstract
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnionic ring-opening polymerization of macrocyclic estersRyoji Nomura, Akiko Ueno, and Takeshi EndoCite this: Macromolecules 1994, 27, 2, 620–621Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 January 1994https://pubs…
The pressure-driven flow of a periodic suspension of two-dimensional viscous drops in a channel that is bounded by two parallel plane walls is studied numerically using the method of interfacial dynamics, which is an improved version of the boundary integral method. The viscosity of the drops is assumed to be equal to…
The synthesis of new metal-free and nickel(II) phthalocyanines substituted with four alkylthio groups SR (R = dodecyl or hexadecyl) is described. The new compounds have been characterized by elemental analyses, and IR, 1H NMR and UV/VIS spectroscopy. The thio donors co-ordinate to AgI and PdII to give 2: 1 metal–nicke…