Materials Literature
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The reaction of oxamidrazone with sulfur dichloride affords 4,4′-bis(1,2,3,5-dithiadiazolium) dichloride, which can be reduced with triphenylantimony to the corresponding bis(1,2,3,5-dithiadiazolyl) diradical; the solid state structure and transport properties of the dimer [S2N2CCN2S2]2are reported.
Linstead macrocyclisation of 2,3-bis(dimethylamino)2(Z)-butenedinitrile gives [2,3,7,8,12,13,17,18-octakis(dimethylamino)porphyrazato]magnesium(II) and the title seco-porphyrazine, the structure of which is established by an X-ray crystallographic study.
Methanol extracts of four poly(etherurethane urea) (PEUU) materials were analyzed using Gel Permeation Chromatography (GPC). The additives in the materials were Santowhite powder at 1 wt% and Methacrol 2138 F at 5 wt% loading levels. One-to-two wt% of the original PEUU films was extractable with methanol. The extracta…
A new green complex of indium(III)[In(C48H24N13)] has been synthesised in crystalline form from the reaction of indium with 1,2-dicyanobenzene under a low nitrogen pressure at about 210 °C. It crystallizes in the triclinic system, space group P with Z= 2 in a unit cell of dimensions a= 11.693(2), b= 12.408(3), c= 15.9…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWork of adhesion between water and substituted aromatic hydrocarbonsH. Yildirim ErbilCite this: Langmuir 1994, 10, 1, 286–290Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 January 1994https://pubs.acs.org/doi/10.1021…
The glass transition is a kinetic phenomenon caused by the inability of the liquid structure to equilibrate on an experimental timescale at sufficiently low temperatures. This results in changes during heating or cooling in the temperature dependence of macroscopic properties such as volume, enthalpy, dielectric const…
The chemistry of the aqueous solution, surface chemistry of zirconium oxide (ZrO2), and the physical structure of the corrosion film have to be considered for an understanding of the mechanism of corrosion of zirconium alloys in aqueous solutions. Based on information available in all these areas, we are proposing a m…
Both synthetic and biological materials have been used for smoothing wrinkle lines and depressed scars. Injectable fillers provide a convenient and easy alternative to surgical methods to treat dermal defects. Optimally, injectable fillers augmenting dermal tissue should exhibit properties similar to the dermal collag…
The precipitation of barium sulfate from aqueous solutions at 35°C has been studied by a spontaneous precipitation technique. A variety of polymeric and non-polymeric inhibitors such as poly(acrylic acids) (MW 800 to 20,000), poly(maleic acid), poly(acrylamide), poly(2acrylamide 2-methyl-propanesulfonic acid), poly(di…
Cu–Zn–Co–Al mixed oxides with different Cu : Zn : Co : Al atomic ratios have been obtained by thermal treatment of hydroxycarbonate precursors at different temperatures (623, 723, 823 and 973 K in air). The characterization has been performed by X-ray powder diffraction (XRPD), diffuse reflectance spectroscopy (DRS),…
Abstract Potassium replenishment capacity of eight soil series with varying illite content of their clay fraction were studied at their minimal exchangeable K through green house experiments. Higher minimal K levels were found in soils with high initial K status. Maximum K uptake values were associated with high minim…
Time-averaged structure-factor restraints have been used in two molecular dynamics refinement schemes to define ensembles of conformations for myoglobin that fit the experimentally measured Bragg scattering from P6 crystals. The geometries of the structures have been maintained to the same currently acceptable limits…
A new nitronyl–nitroxide radical, 2-(p-dimethylaminophenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, hereafter denoted NIT(p-NMe2)Ph, has been synthesized. It crystallizes in the P21/c, space group, with a= 15.742(2)Å, b= 10.875(4)Å, c= 19.011(5)Å and β= 113.26(2)°, the asymmetric unit containing two independent…
We studied the liposome formulation characteristics of eight new lipophilic antitumour agents that have demonstrated a broad spectrum of antitumour activity in preclinical in vitro and in vivo screening models. Multilamellar vesicles were prepared by using standard evaporation/hydration methods. The drug to lipid weig…
The evolution of a one-dimensional Ising model with Glauber dynamics and an extrinsic energy barrier, submitted to continuous cooling and heating processes, is studied. The model is shown to exhibit many of the properties observed in real glasses. Under slow cooling, the dependence of the residual energy on the coolin…
In this study, Mg-10mass%Gd or Dy-2 or 3mass%Nd alloys containing zirconium as a grain refinement agent were melted for the purpose of further improvements of various properties. Aging characteristics and tensile properties up to 350°C of these alloys were investigated. Hardness at peak-aging becomes higher by the add…
Sintered bodies of BaM2O4 (M: La, Nd, Sm, Gd, Ho or Y) with CaFe2O4-related structure were synthesized by sintering BaCO3-M2O3 mixtures. The temperature dependence of oxygen ionic conductivity and the relationship between the ionic radius of M3+ ions in B sites and the crystal structure of BaM2O4 were investigated. Th…
This paper provides a method for evaluating three lumped equivalent capacitances which take into account the physical effects of stray capacitances in two coupled inductors. Capacitance evaluation is performed in two steps: (i) initially, the resistance and leakage inductance of each winding, together with the magneti…
The direct analysis of dissolved spent nuclear fuel by inductively coupled plasma mass spectrometry (ICP-MS) allows the elemental and isotopic composition of the irradiated fuel to be determined without any chemical separation. A qualitative evaluation was carried out on the effects of fission, β-decay and neutron-cap…
The variation of the linear electro-optic effect in (-)-2-(α-methylbenzylamino)-5-nitropyridine with the wavelength of the incident light at room temperature has been measured. The reduced half-wave voltages have been found to have the values 2.1, 2.8, and 6.0 kV at 488, 514.5, and 632.8 nm respectively and the corres…