Materials Literature
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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…
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…
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…
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…
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…
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…
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 (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…
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…
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…
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…
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…
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…
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…
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…
The paper presents an investigation on the use of partial discharge (PD) as a means to study the development of leakage current (LC) on silicone rubber insulators in a salt-fog chamber. Simultaneous measurements of LC and PD on dead-end type silicone rubber insulators exposed to different combinations of electrical st…
Abstract Ideally ordered hole array structures in anodic porous alumina were prepared by pretexturing Al using a nanoindentation apparatus equipped with a scanning probe microscope. The shallow concaves formed by the nanoindentation initiated hole development, and guided the growth of holes during the anodization. Hol…
A new germanate glass‐ceramic material in the BaO‐Ga 2 O 3 ‐GeO 2 system is developed for infrared (IR) dome and window applications. This glass‐ceramic material has a grain size of ∼0.2–0.5 μm and is transparent in the 3–5 μm IR region. Glass ceramization results in 40% improvement in hardness, 65% increase in elasti…
Polycrystalline Ti2SnC was prepared by a novel solid-liquid reaction synthesis and simultaneous densification method using elemental Ti, Sn and graphite as starting materials. The method is a one-step process and it provides the advantages of simultaneous synthesis and densification. The microstructure evolution durin…
In this short communication we describe some software techniques for electron energy-loss spectrum measurement. We prepared DigitalMicrograph (Gatan) scripts for multiple spectrum acquisitions, quasi-simultaneous acquisition of low-loss and core-loss spectra, energy drift correction, and other operations. Narrow zero-…