Materials Literature
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A series of stereospecifically assembled configurational chiral heterometal dinuclear 3d–4f complexes (Λ-Δ)-[(acac)2Cr(ox)Ln(HBpz3)2] (acac− = acetylacetonate, ox2− = oxalate, HBpz3− = hydrotris(pyrazol-1-yl)borate; Ln(III) = La, Nd, Sm, Ho, Er and Tm: (Λ-Δ)-Cr(ox)Ln, where (Λ-Δ) implies the absolute configuration aro…
The dc conductivity and thermo-electric power of a-Se 80x In x (x = 5, 10, 15, 20, 30) and a-Se 80x Ge 20 In x (x = 0, 5, 10, 15, 20) thin films are reported in the present work. The free-charge-carrier concentration is calculated with the help of dc conductivity and thermo-electric power measurements. The calculate…
The aim of this study was to investigate the effects of three steroidal glycosides (SG-100, SG-280, and SG-460) obtained from Polygonatum odoratum (Mill.) Druce. on insulin secretion, insulin action, and relative glucose uptake in various tissues of 90% pancreatectomized male Sprague-Dawley rats. One of the compounds…
Abstract Results from ab initio Hartree–Fock and gradient‐corrected density functional theory calculations of formic acid interactions with ZnO (10 1 0) surfaces are reported. Surface relaxation is found to affect equilibrium geometries and adsorption energies significantly. Large variations in adsorption energy with…
A new transition metal thioantimonate(III) with composition Mn 2 (H 2 N(CH 2 ) 2 NH 2 )Sb 2 S 5 has been synthesised under solvothermal conditions. Two trigonal SbSb 3 pyramids and two octahedrally coordinated Mn atoms are interconnected to form Mn 2 SbS 4 heterocubanes as secondary building units (SBU’s). The SBU’s a…
The amphiphilic 5,11,17,23-tetrakis(1,1,3,3-tetramethylbutyl)-25,26,27,28-tetra(carboxymethoxy)calix[4]arene, 1, forms stable monolayers at the air–water interface which can be employed as supramolecular templates for induced calcite crystallization. Uniform, (012) oriented CaCO3 (calcite) single crystals grow underne…
In order to achieve low temperature superplasticity at relatively high strain rate in magnesium alloys, Mg–10 mass%Li–1 mass%Zn (LZ101) α+β two phase alloy was subjected to ECAE (Equal Channel Angular Extrusion) processing and tensile tests of the obtained specimens of the alloy were carried out to investigate the sup…
Crystals of (Cl2C3NS)(ClC2NS2), an isothiazolyl-substituted 1,2,3-dithiazolyl radical, consist of evenly spaced, slipped pi-stacks; magnetic and conductivity measurements indicate the material is a Mott insulator with sigma RT = 2 x 10(-7) S cm-1.
Two new carbonato-bridged copper complexes with different nuclearity have been synthesized and structurally characterized through X-ray diffraction analyses: the tetranuclear complex [CuII4(μ4-CO3)(μ-Cl)2(dpt)4](ClO4)4·3 MeOH, 2·3MeOH and the trinuclear [CuII3(μ3-CO3)(ClO4)2(dpt)3(OH2)](ClO4)2·H2O, 3·H2O (dpt is bis(3…
Nano-scale finite element approach was used to predict the mechanical properties of carbon nanotubes. The unit-cell isolation scheme was same as that from Eric Seather [1], and nothing was assumed to exist inside any nanotube. Arm-chair, zigzag and chiral type of nanotubes with different radii were discussed in detail…
A series of random poly(ester amide)s with different chemical compositions and derived from sebacoyl dichloride, 1,6-hexanediamine and 1,6-hexanediol was synthesized and characterized. In addition, a poly(ester amide) with equal ratio of 1,12-dodecanediamine and 1,12-dodecanediol units was prepared. All these poly(est…
The nor-clerodane diterpene trans-crotonin isolated from the bark of Croton cajucara BENTH. was investigated for its ability to prevent the formation of gastric-mucosa ulceration in different experimental models in mice. The results obtained from crotonin were compared with those obtained with another diterpene, DHC (…
The evaluation methods of the delayed fracture properties of high strength steels and the methods which improve the delayed fracture resistance of steels have been reviewed. The evaluation method which is crucial for the development of steels with high strength has yet to be authorized. However, a new evaluating metho…
We synthesised a series of linear bis(triarylamine) species whose triarylamine redox centres have different local redox potentials which were tuned by substituents in the para-position. The mixed-valence (MV) radical cations of these systems were generated and investigated in situ by UV/Vis/NIR spectroelectrochemistry…
The temperature dependence of the X- and Q-band EPR spectra of Cs(2)[Zn(H(2)O)(6)](ZrF(6))(2) containing approximately 1% Cu(2+) is reported. All three molecular g-values vary with temperature, and their behavior is interpreted using a model in which the potential surface of the Jahn-Teller distorted Cu(H(2)O)(6)(2+)…
A unique nonwoven 3D fabric-forming process, designed to bind a set of linear yarns that is arrayed in either uniaxial or multiaxial orientation, was identified, characterised and termed noobing five years ago. The produced 3D fabric, usually intended for composite materials application, is layerless and comprises cri…
The perovskite-type compounds Ba2LnReO6 (Ln = Y, Nd, Sm–Lu) have been synthesized. Powder X-ray diffraction measurements and Rietveld analysis show that they are monoclinic with space group P21/n and that Ln3+ and Re5+ ions are structurally ordered. Anomalies are found in their magnetic susceptibility and specific hea…
Numerical methods to predict the solubility of anthracene in mixed solvents have been proposed. A minimum number of 3 solubility data points in sub-binary solvents has been employed to calculate the solvent-solute interaction terms of a well established colsolvency model, i.e. the combined nearly ideal binary solvent/…
Recently, a new class of copolymers, so-called protein-like copolymers has been predicted theoretically by computer simulation. In these copolymers, the conformation of the copolymer determines the exposure of certain comonomer units to the outer solution. Depending on the conformation, copolymer molecules with essent…
We have shown for the first time experimentally that the O2 and O4 sites of uracil have different proton affinities, and as implied in previous computational studies, the O4 is more basic and would be energetically preferred in an orotate ribose 5'-monophosphate decarboxylase catalysis mechanism involving proton trans…