Refinement of the crystal structure of arsenolite, AS2O3
As2O3, cubic, Fd (3) over barm (No. 227), a = 11.07343(5) Angstrom, V = 1357.8 Angstrom(3), Z = 16, R(P) = 0.056, wR(P) = 0.073, R(I) = 0.068, T = 295 K.
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Detailed Structural Characterizations of SBA‐15 and MCM‐41 Mesoporous Silicas on a High‐Resolution Transmission Electron Microscope
Abstract Using high‐resolution transmission electronic micrograph (HR‐TEM) observation, one can clearly see the pore geometry of the MCM‐41 and SBA‐15 mesoporous silicas to determine that their pore shapes are hexagonal and round, respectively. With the perpendicular orientations of the nanochannels to the electron be…
Synergistic inhibition of carbon steel corrosion by sodium tungstate and sodium silicate in neutral aqueous media
Tungstate inhibitors are seldom used alone in open recirculating cooling water systems due to their low oxidising ability and high cost. The objective of the present work was to develop efficient synergistic inhibitor combinations comprising sodium silicate and very low concentration of sodium tungstate, keeping in vi…
Solid Solubility and Precipitation in a Single‐Crystal Alumina–Zirconia System
Solid solubility was examined in Zr‐doped sapphire and Al‐doped yttria‐stabilized zirconia (YSZ) single crystals from 1200° to 1600°C. Specimens were fabricated via ion implantation of single crystals, followed by annealing in air. Secondary ion mass spectroscopy (SIMS) was used to quantify solute redistribution durin…
Iron (II) Phosphate (Fe3(PO4)2 by XPS
The XPS spectra of ferrous phosphate were collected with a VSW HA150 using monochromatic Al Kα x-radiation. Monochromatic radiation provides a distinct clarity to the rich peak structure in the valence band of ferrous phosphate due to the absence of interfering x-ray satellites from the intense O 2s region. The valenc…
The Characterization of a New Pale Blue Corrosion Product Found on Copper Alloy Artifacts
A new pale blue corrosion product has been found on copper alloy artifacts in the collections of a number of institutions. The corrosion product has been characterized using X-ray powder diffraction, X-ray photoelectron spectroscopy, wavelength X-ray dispersive spectroscopy and Raman microspectroscopy. The corrosion p…
Ability of some Norwegian soils to supply grass with potassium (K) ‐ soil analyses as predictors of K supply from soil
Abstract. Uptake in grass crops of ammonium acetate lactate extractable K (K AL ) and reserve K (interlayer K + structural K) in soil was studied in 16 field experiments at different locations on a range of mineral soil types in Norway. The K uptake from soil, both from K AL and reserve K, was considerable, often even…
Electrical insulation characteristics of cold dielectric high temperature superconducting cable
For the optimization of electrical insulation design for high temperature superconducting (HTS) cable, evaluation of electrical insulation characteristics especially for butt gap of LN/sub 2/ impregnated cold dielectric (CD) which consists of the wrapped tape insulation impregnated with LN/sub 2/ plays an important ro…
Analysis of membrane stereochemistry with homology modeling of sn-glycerol-1-phosphate dehydrogenase
Different enantiomeric isomers, sn-glycerol-1-phosphate and sn-glycerol-3-phosphate, are used as the glycerophosphate backbones of phospholipids in the cellular membranes of Archaea and the remaining two kingdoms, respectively. In Archaea, sn-glycerol-1-phosphate dehydrogenase is involved in the generation of sn-glyce…
Quantitative analysis of mineralized white Portland clinkers: The structure of Fluorellestadite
Fluorellestadite, Ca 10 (SiO 4 ) 3 (SO 4 ) 3 F 2 , has been synthesized as single phase. This compound crystallizes in the apatite type structure, s.g. P6 3 /m, with parameters a =9.4417(1) Å, c =6.9396(1) Å and V =535.76(1) Å 3 . The refinement of its crystal structure converged to R WP =12.33% and R F =4.58%. The at…
Fabrication of Flexible Distributed Feedback Laser Using Photoinduced Surface Relief Grating on Azo-Polymer Film as a Template
An all-polymer flexible distributed feedback (DFB) laser has been fabricated using a photoinduced surface relief grating (SRG) on an azo-polymer film as a template. The holographically induced SRG on the azo-polymer was transferred onto a flexible film of a UV-curable photopolymer. Optically pumped mirrorless DFB lase…
Molecular Dynamics Study of Hypothetical Silicon Nanotubes Using the Tersoff Potential
We have performed classical molecular dynamics simulations for hypothetical silicon nanotubes using the Tersoff potential. Our investigation presented a systematic study about the thermal behavior of hypothetical silicon nanotubes and showed the difficulty in producing silicon nanotubes or graphitelike sheets. However…
Aluminum Nitride Prepared by Nitridation of Aluminum Oxide Precursors
Aluminum nitride (AlN) powders were prepared from the oxide precursors aluminum nitrate, aluminum hydroxide, aluminum 2‐ethyl‐hexanoate, and aluminum isopropoxide (i.e., Al(NO 3 ) 3 , Al(OH) 3 , Al(OH)(O 2 CCH(C 2 H 5 )(C 4 H 9 )) 2 , and Al(OCH(CH 3 ) 2 ) 3 ). Pyrolyses were performed in flowing dry NH 3 and N 2 at 1…
A Systematical Method for Suppressing Ferroresonance at Neutral-Grounded Substations
At neutral-grounded substations, ferroresonance may happen upon switching a circuit breaker or disconnector due to the saturated magnetizing characteristics of the bus PT. A systematical method is presented to analyze and suppress the phenomenon. The scheme for suppressing the ferroresonance is to insert resistance, m…
Effects of temperature and strain rate on the tensile behavior of unfilled and talc‐filled polypropylene. Part II: Constitutive equation
Abstract Based on the experimental results presented in Part I of this research, a three parameter nonlinear constitutive model has been proposed to describe the strain rate and temperature dependent tensile behaviors of unfilled and talc‐filled polypropylene. One of the parameters is the elastic modulus. The other tw…
Magnetic phase diagram of the Bi1-x CaxMnO3 manganites
The magnetic and elastic properties of the Bi1-x CaxMnO3 manganites are studied. The phase transformations revealed are ferromagnet-spin glass (x≥0.15) and spin glass-charge-ordered antiferromagnet (x≥0.25). The ferromagnetic state is characterized by ordering of the Mn3+ d x 2-y orbitals. It is suggested that thespin…
Spectroimmunochemistry Using Colloidal Gold Bioconjugates
Using surface-enhanced infrared absorption (SEIRA) spectroscopy of dry films of colloidal gold (CG) bioconjugates with protein A, it is shown that certain characteristic bands of the protein (e.g., amide I, amide II and some other vibration modes) are essentially affected by the metal surface. Thus, the method may be…
Raw Materials for Low-Activation Concrete Neutron Shields
Concrete surrounding a nuclear reactor accumulates radioisotopes induced by neutron reactions during operation, and this concrete still remains to an enormous degree as radioactive waste after decommissioning. The disposal of such activated concrete is very costly and requires strict supervision. Hence, there has been…
Gadolinium-Ethoxybenzyl-Diethylenetriamine-Pentaacetic Acid Interaction With Clinical Drugs in Rats
RATIONALE AND OBJECTIVES: To investigate whether the hepatic enhancement characteristics of Gd-EOB-DTPA are influenced by the preapplication of a variety of commonly used clinical pharmaceuticals (eg, antibiotics, antineoplastic drugs, corticosteroids, antiarrhythmia drugs, antianxiety drugs, scopolamine, and xanthine…
AGE RELATED CHANGES IN POULTRY BREAST MEAT COLLAGEN PYRIDINOLINE AND TEXTURE
Pyridwotine (PYR), a mature collagen crosslink, -was measured in Ross hen breast meat, Pectoralis major, age ranging from 20 to 540 days and its concentration varied between 0.009 to 0.101 mol/mol collagen, respectively. PYR concentration was inversely related to collagen solubility in muscle homogenates (P>0.05) and…