Materials Literature
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Mycobacterium tuberculosis contains multiple versions of the accA and accD genes that encode the alpha- and beta-subunits of at least three distinct multi-functional acyl-CoA carboxylase complexes. Because of its proposed involvement in pathogenic M. tuberculosis survival, the high-resolution crystal structure of the…
In the title complex, [Co(μ-NCS)2(μ-C6H7NO)]n, both the thiocyanate and 4-methylpyridine N-oxide ligands coordinate to the CoII atom as bridging ligands, forming a two-dimensional sheet structure. There is a non-classical C—H⋯S hydrogen bond in the sheet.
Abstract The aim of this study was to investigate whether starch and poly(vinyl alcohol) could be compatible in a powder for coating. Free films of a mixture of the polymers were produced by casting and investigated with respect to their mechanical properties and moisture uptake. The moisture uptake was substantially…
A general expression is proposed for the peak profile produced by a system of simple-shape crystalline domains (sphere, cube, tetrahedron, octahedron) whose size is dispersed according to a gamma distribution. The analytical expression obtained is particularly suited to “on the fly” pattern simulation or profile fitti…
The crystal architecture, magnetic properties, and thermodynamic properties of [n-butylferrocene][Ni(mnt)2] (1), [tert-butylferrocene][Ni(mnt)2] (2), [1,1'-diethylferrocene][Ni(mnt)2] (3), and [1,1'-diisopropylferrocene][Ni(mnt)2] (4) were investigated (mnt=maleonitriledithiolate). These complexes exhibit a unique sup…
Without intervention, it has been found that surface-initiated photoiniferter-mediated photopolymerization (SI-PMP) of methyl methacrylate suffers from irreversible termination, which leads to cessation of polymerization. These irreversible termination reactions were successfully reduced by preaddition of tetraethylth…
This article describes development of a simple and convenient method to provide stable low-surface-energy coatings on organic surfaces, by designing and synthesizing a surface-reactive molecule 4-azido-N-dodecylbenzamide, which bears an azide group as the reactive surface anchor and an alkyl chain as the hydrophobic t…
The paper describes a number of studies relating to the retention of marine salts on atmospheric corrosion test plates and the cleaning of such salts in field exposures. Data from three separate field studies are presented. In each study, instrumented zinc plates were openly exposed to the atmosphere. Plates were expo…
We have experimentally fabricated Ge-nanocrystals (ncs) metal-oxide-semiconductor field-effect transistors (MOSFETs) with significant capacitance–voltage hysteresis window, threshold voltage shift and good retention. The Ge-ncs/SiO 2 system has a good charge storage capability with a charge loss of 12.5% after 10 year…
Abstract The catalytic partial oxidation (CPO) of C 1 through C 16 normal alkanes is examined on Pt and Rh‐coated α‐Al 2 O 3 ceramic foam supports. New data for heavy liquid fuels (≥ C 6 ) are combined with previously reported data for lighter hydrocarbons to explore the effects of reactant fuel molecular weight, cata…
We have investigated the stability of various hydrogenated single-walled carbon nanotubes. We find that the storage capacity of hydrogen depends significantly on the diameters of carbon nanotubes. Full hydrogen coverage can be reached for nanotubes with small size, while for nanotubes with large size, the saturation c…
Effective pair potentials v ( r ) between hard-sphere colloids and the centers of mass of self-avoiding polymer coils are determined in the low-density limit by Monte Carlo sampling of polymer conformations, over a wide range of size ratios λ = R c / R g, where R c and R g are the colloid and polymer radii. In the pro…
Implantable, biocompatible and biodegradable devices bearing an anticancer drug can provide promising local therapy to patients with malignant disorders. With the aim of treating brain tumors, especially gliomas, a membranous sheet containing doxorubicin was produced by co-polymerization to poly(D,L-lactide-co-glycoli…
A high-pressure technique is introduced which allows a continuous variation of the inclusion size in liquid crystal colloids. We use a nematic liquid crystal host into which micrometer-sized gas bubbles are injected. By applying hydrostatic pressures, the diameter of these gas bubbles can be continuously decreased via…
The crystal structure of La 2 SiO 5 was refined from laboratory X-ray powder diffraction data (CuK α 1 ) using the Rietveld method. The crystal structure is monoclinic (space group P 2 1 ∕ c , Z =4) with lattice dimensions a =0.93320(2) nm, b =0.75088(1) nm, c =0.70332(1) nm, β =108.679(1)°, and V =0.46687(1) nm 3 . T…
Abstract Hydrophobic organic montmorillonite (OMMT) which exists as stable dispersions in cyclohexane has been prepared by the combined modification of quaternary ammonium salts and coupling agents, and polybutadiene (PB)/OMMT nanocomposites (NCs) were successfully synthesized by in situ living anionic polymerization.…
One of the primary objectives in the design of protein inhibitors is to shape the three-dimensional structures of small molecules to be complementary to the binding site of a target protein. In the course of our efforts to discover potent inhibitors of Bcl-2 family proteins, we found a unique folded conformation adopt…
Weak depletion gels with particle radii of ∼200–500 nm have been reported to display a time-dependent settling behaviour where an initially space spanning gel displays a catastrophic collapse after a characteristic period of time, defined as the delay time. Several experiments suggest that thermally activated particle…
To know the accurate relationship between pore size and the pressure of capillary condensation or evaporation and also to elucidate the pore-connectivity effects on adsorption hysteresis and pore criticality for the ordered mesoporous silicas (MCM-48 and KIT-6) with bicontinuous gyroid structure, we carried out X-ray…
Rigidity transitions that separate elastic phases in glasses are studied in the case where the local structure is not fully determined from the macroscopic concentration. It is shown that the location of the rigidity transitions, and the intermediate phase that separates flexible from stressed rigid glasses, depend cr…