Materials Literature
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Abstract A series of titanium silicate glasses along the composition joins TiO 2 -SiO 2 , TiO 2 -Na 2 SiO 3 , TiO 2 -K 2 SiO 3 and TiO 2 -CaSiO 3 , has been examined using oxygen K -edge X-ray absorption near edge structure spectroscopy (XANES) confined to the near-surface region. Sharp pre-edge features in the spectr…
Using a first-principles plane-wave pseudopotential method, the geometric and electronic structures of ${\mathrm{Ti}}_{2}\mathrm{Al}X$ $(X=V,$ Nb, or Ta) are investigated. The supercells of ${\mathrm{Ti}}_{2}\mathrm{Al}X$ are constructed by replacing certain Ti atoms in ${\ensuremath{\alpha}}_{2}\ensuremath{-}{\mathrm…
The flux of fatty acids toward beta-oxidation was analyzed in Saccharomyces cerevisiae by monitoring polyhydroxyalkanoate synthesis in the peroxisome from the polymerization, by a bacterial polyhydroxyalkanoate synthase, of the beta-oxidation intermediates 3-hydroxyacyl-CoAs. Synthesis of polyhydroxyalkanoate was depe…
The untreated and 2%aqueous NaOH treated bamboo fibers (Dendrocalamus strictus) were coated with epoxy, unsaturated polyester (UP) and their blends. The chemical resistance of these fibers to acetic acid, nitric acid, hydrochloric acid, sodium hydroxide, ammonium hydroxide, sodium carbonate, benzene, toluene, carbon t…
We have carried out a study on the supramolecular liquid crystal organisation shown by LC dendrimers. This study has allowed us to draw interesting conclusions about the molecular plasticity of this type of dendromesogens and even to predict the mesogenic behaviour of higher generations of homologous dendrimers or sim…
Ohmic contacts with low contact resistivity were formed on phosphorus-doped n -type {111} diamond thin films grown by microwave-plasma chemical-vapor deposition. Heavily-doped diamond layers were selectively grown on a diamond substrate by covering a part of substrate surface with a titanium/gold layer. Gold contacts…
In this report, we describe a laser-latex combination system that enables membrane-impermeable molecules to penetrate cell membranes. Laser light (Q-switched Nd:YAG laser, 532.5 nm) was used to irradiate a mixture of commercial latex particles (blue dyed, 1 micro m in diameter) and mouse fibrosarcoma (Meth-A) cells. A…
We studied theoretically the interaction of simple aliphatic amines with carboxylated zigzag and armchair single-walled carbon nanotube (SWNT) models. We used single-level MM+ molecular mechanics and the AM1 semiempirical method to study noncovalent interactions. To study the model amidation reaction with methylamine,…
ABSTRACT: Films based on whey protein isolate (WPI) were formed using compression molding. Compression molded films could be formed using 30% to 50% moisture content or glycerol content WPI at 104 °C to 160 °C for 2 min. Films made from water‐WPI mixtures were brittle and insoluble and had water‐vapor permeability val…
Thin homogeneous films of the Prussian blue analogues with idealized formulas KFe III [Fe II (CN) 6 ], KNi II [Fe III (CN) 6 ], CsNi II [Cr III (CN) 6 ], and KCr II [Cr III (CN) 6 ] have been prepared through the sequential adsorption of the appropriate metal ions and hexacyanometalate complexes onto hydrophobic surfa…
In this review, the control of size and shape of inorganic nanocrystals via colloidal solution is discussed. The nanocrystals are organized in 2D and 3D superlattices with formation of ‘supra’ crystals in fcc structure. Physical properties of nanocrystals organized in mesoscopic scale are neither those of the isolated…
Fully dense, doped ZnO varistors were prepared using an easy two‐stage pressureless‐sintering method at temperatures as low as 825°C, with a grain size of ∼0.5 μm. After the highly nonohmic ZnO varistors were sintered, their fine microstructure consisted of uniformly sized grains, small spinel grains with partially di…
Nanometric ammonium aluminum carbonate hydroxide (AACH) with a particle size less than 5 nm was produced from ammonium aluminum sulfate and ammonium hydrocarbonate under an optimized adding condition, and phase transformations of the AACH on heating and the effect of α‐Al 2 O 3 seeding on the transformation kinetics w…
Abstract The size of quaternary <mml:math xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mnf="http://cambridge.org/core/manifest" xmlns:cup="http://contentservices.cambridge.org" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:m="http://cambridge.org/core/metadata" xmlns:core="http://cambridge.org/core" xmlns:c…
Abstract The soot combustion process promoted by some of the most promising diesel particulate combustion catalysts (Cs 2 O·V 2 O 5 , Cs 4 V 2 O 7 , CsVO 3 ) is discussed on the grounds of a theoretical analysis and an experimental test campaign involving reaction runs in microreactors (either in isothermal or in temp…
We show that finite-size scaling techniques can be employed to study the glass transition. Our results follow from the postulate of a diverging dynamical correlation length at the glass transition whose physical manifestation is the presence of dynamical heterogeneities. We introduce a parameter B(T,L) whose temperatu…
We present the circuit equivalent of the Landau-Khalatnikov dynamical ferroelectric model. The differential equation for hysteretic behavior is subject to numerical computer simulations. The size and shape of the simulated hysteretic loops depend strongly on the frequency and the amplitude of the driving electric fiel…
This study investigates the influence of cyclic tensile strain, applied to fully contracted fibroblast-seeded collagen constructs. The constructs were preloaded to either 2 or 10 mN. The preloaded constructs were subsequently subjected to a further 10% cyclic strain (0-10%) at 1 Hz, using a triangular waveform, or wer…
Abstract DTPA‐bisamide derivatives with alkyl chains containing 14, 16 and 18 carbon atoms were synthesized and complexes of various trivalent lanthanide ions (Ln = Gd, La, Pr, Eu) were formed. Variable temperature proton NMR spectroscopy of paramagnetic praseodymium( III ) and europium( III ) complexes revealed that…
Galactokinase plays a key role in normal galactose metabolism by catalyzing the ATP-dependent phosphorylation of alpha-D-galactose to galactose 1-phosphate. In humans, mutations in the galactokinase gene can lead to the diseased state referred to as Type II galactosemia. Here we describe the three-dimensional structur…