Materials Literature
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Effective Hamiltonians for LaFeAsO and LaFePO are derived from the downfolding scheme based on first-principles calculations and provide insights for newly discovered superconductivity in the family of LnFeAsO$_{1-x}$F$_x$, Ln = La, Ce, Pr, Nd, Sm, and Gd. Extended Hubbard Hamiltonians for five maximally localized Wan…
In the magnetic Eden model (MEM), particles have a spin and grow in contact with a thermal bath. Although Ising-like interactions affect the growth dynamics, deposited spins are frozen and not allowed to flip. This review article focuses on recent developments and future prospects, such as spontaneous switching phenom…
Abstract The Paternò–Büchi reactions of tetrahydrobenzofuranols with benzophenone were investigated to reveal site- and stereoselectivity in oxetane formation reactions. Both selectivities were found to be largely dependent on the reaction temperature. The trans selectivity increased with a decrease in temperature, an…
Two forms of alpha 1 acid glycoprotein (orosomucoid) have been studied using small-angle neutron and X-ray scattering techniques; in one form all the five glycan chains were biantennary, while in the other they were either triantennary or tetraantennary. The radius of gyration RG was found to be sensitive to salt for…
A method is reported for the modification of lipids in situ in chloroplast membrane by which a homogeneous, water-soluble catalyst Pd(QS)2 (QS, sulphonated alizarine; C14H6O7NaS) is incorporated into the thylakoids of isolated chloroplast. The catalyst itself did not affect the photosynthetic activity but caused an ex…
The Thermage system is a radiofrequency (RF) device designed to treat human skin. The Thermage ThermaCool TC™ is a noninvasive, nonablative, nonlaser system that combines cryogen cooling and radiofrequency (RF) energy to volumetrically heat dermal and subdermal tissue. Thermage treatment causes collagen contraction re…
In the title compound, [Cu(C(8)F(4)O(4))(C(5)H(5)N)(3)](n), the Cu(II) atom, lying on a twofold rotation axis, is five-coordinated by two O atoms from two tetra-fluoro-terephthalate ligands and three N atoms from three pyridine ligands in a distorted trigonal-bipyramidal geometry. Adjacent Cu(II) atoms are connected v…
Abstract The surface of diamond powder (DP) was sulfonated via a covalent modification method using 1,3-propanesultone, for the fabrication of a new class of solid acid material. X-ray photoelectron spectroscopy (XPS) and diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy studies confirmed successful…
Superparamagnetic nanocomposite particles composed of maghemite nanocrystal (ca.15 nm) and deposited Pt nanoclusters (ca. 2.5 nm) were synthesized by a low temperature catalytic method. The magnetic properties of iron oxides species can be easily tuned with different redox atmosphere in the presence of Pt nanoclusters…
The term "acetate switch" refers to the transition from acetate production (dissimilation) to acetate utilization (assimilation).Best studied with the enteric bacterium Escherichia coli, the acetate switch takes place as cells deplete their environment of acetate-producing (acetogenic) carbon sources, such as D-glucos…
Three types of metamorphic titanite have been noted in a metarodingite pod within the tectonized and serpentinized peridotite portion of the Penjwin ophiolite sequence within the Iraqi Zagros Thrust Zone (IZTZ), northeastern Iraq. Type I metamorphic titanite occurs as subhedral to anhedral finegrained disseminated cry…
Alkylketene dimers (AKDs) and triglyceride waxes form fractal surfaces spontaneously and show super water-repellent property. Spontaneous formation of fractal structures on their surfaces takes place when the meta-stable crystalline phase of the waxes transforms to the thermodynamically stable form of crystal. The tri…
The role of charge and surface modification in the toxicity of CNT is investigated. Two-photon confocal microscopy, Raman microscopy and Lactate Dehydrogenase (LDH) assay are employed to study the effect of CNT on Rat glioma cell line (C6 cells) and rat alveolar macrophage continuous cell line (AM 11). Two-photon conf…
The adsorption of CO on the two terminations, p(2 × 2) and (√3 × √3) R30°, of the bulk Pt 3 Sn(111) alloy is studied by high pressure polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS). The influence of O 2 is also investigated. While no differences are observed when CO is chemisorbed alone…
This work investigated the effects of an in-cylinder active thermo-atmosphere environment (ATAE) on the diesel engine combustion and emissions in a single-cylinder diesel engine. Port-fuel injection of n -heptane was used to prepare the lean fuel/air mixture, and active radicals and heat release were found during the…
The coordination geometry of the Cu atom in the title compound, [CuI(C(7)H(8)N(2)S)(C(18)H(15)P)(2)], is distorted tetra-hedral; it is coordinated by two triphenyl-phosphine P atoms, one S atom from N-phenyl-thio-urea (ptu) and one I atom. The crystal structure is stabilized by intra- and inter-molecular N-H⋯I and N-H…
We present here in vitro antioxidant and in vivo antiulcer activities of the chloroform insoluble fraction of defatted ethanolic extract of whole plant of A. sessilis (CIAE). Antioxidant activity was determined by three in vitro methods-DPPH and H2O2 radical scavenging and reducing power. To study the antiulcer activi…
Recent advances in high-resolution solid-state NMR enabled us to resolve the previously unknown details of atomic configurations around quadrupolar nuclides such as O ( 17 O, spin 5/2) and aluminum ( 27 Al, spin 5/2) in phyllosilicates. Here, we report the 17 O 1D and 2D NMR (MAS and MQMAS) spectra of synthetic kaolin…
Gallium-bridged diiron complex Cp*(dppe)FeGaFe(CO) 4 ( 2, Cp* = η-C 5 Me 5, dppe = Ph 2 CH 2 CH 2 PPh 2 ) did not react with [PPN]Cl, DMAP (4- N, N -dimethylaminopyridine), and bpy (2,2′-bipyridine); however, reaction of 2 with HCl caused Ga−Fe(CO) 4 bond fission to give Cp*(dppe)FeGaCl 2 ( 4 ). The Ga−Fe(CO) 4 bond c…
Complementary techniques, including nitrogen adsorption, small-angle X-ray scattering (SAXS), and atomic force microscopy (AFM), have been utilized to characterize the surface features of highly microporous carbon materials prepared from highly aromatic polymers. Nitrogen adsorption measurement interpreted by BET, DR,…