Materials Literature
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The crystal structures of [Cu2(bdpdz)Br4]·2CH3CN 1, [Cu2(bdpdz)Cl3(H2O)]Cl·3.5H2O 2 and [Cu2(bdpdz)2][ClO4]43 were determined by X-ray analysis, where bdpdz, represents the binucleating ligand 3,6-bis(di-2-pyridylmethyl)pyridazine, formed by the reaction of 3,6-dichloropyridazine and di-2-pyridylmethyllithium. Compoun…
Abstract Fission gas behavior of UO2 fuel pellets with controlled microstructure irradiated to 23 GWd/t in a test reactor has been studied by using a postirradiation annealing experiment. Four types of fuel pellets with or without additives were examined : (1) un-doped standard (grain size: 16/μm), (2) un-doped large…
Abstract A series of photochromic 6′-nitro-3-octadecylspirobenzoselenazolinobenzopyrans have been newly prepared and their solution structures of the colored form have been confirmed as 3-octadecylbenzoselenazolenium-2-trans-1′-cis-(5′-nitrostyryl-2′-oxide) by selective partial deuteration and NMR techniques. Photochr…
The binding free energy difference for the Gly-169-->Ala-169 (G169A) mutation in subtilism BPN' complexed with a tripeptide substrate analogue is explored using the thermodynamic integration approach. The structure of the mutant enzyme-substrate complex obtained from free energy simulation is in good agreement with ex…
A two-dimensional model of the mechanical properties of textiles is constructed, and the relations between model parameters and model behaviour are studied. The influence of the number of bonding sites in the model on stress-strain curves, on the CPU time consumption, and on the stability of model outputs is described…
A one-dimensional constitutive model for the thermomechanical behavior of shape memory alloys is developed based on previous work by Liang and Tanaka. An internal variable approach is used to derive a comprehensive constitutive law for shape memory alloy materials from first principles without the assumption of consta…
Factors determining the magnitude of critical current density, at which Zn began to deposit from impurityfree electrowinning bath, were studied on the basis of extra-overpotentials peculiar to hydrogen evolution. Electrochemical condition, which permitted codeposition of electrochemically less noble Zn with more noble…
Clothing pressures were measured in relation to the covered area at the waist for waistnipper and waistband at a reduction rate of 2.5%. A sensory test was carried out on subjects in relation to the clothing pressure. Clothing pressures at the waist line (W. L) for the waistband, for which the area covered at the wais…
An in situ Fourier-transform infrared study is presented for the spectral region from 250 to 1400 cm–1. Using supported samples the changes for the infrared-active lattice modes after protonation are studied for zeolites A, X, L, ZK-5, mordenite and for zeolites Y with Si : Al ratios from 2.4 to 40.Protonation of the…
The gene nprM encoding the calcium-dependent extracellular proteinase from Bacillus megaterium ATCC 14581 was cloned in the vector pBR322 and expressed in Escherichia coli HB101. The DNA sequence of the cloned 3.7 kb fragment revealed only one open reading frame consisting of 1686 bp with a coding capacity of 562 amin…
Conducting polymers are extensively used against electromagnetic interference. Unusually high electromagnetic shielding efficiency has been observed for inherently conducting polymer-coated metal/polymer composites.
Electron energy-loss spectrometry enables the detection of Li and Be via the K ion- ization edges. However, the detection and quantification of these low energy edges present several problems, like low edge-to-background ratios, problems with background extrapolations, overlapping of edges and multiple scattering in c…
Alkaloids 1-4 from Cynanchum vincetoxicum (asclepiadaceae) (Scheme 1) do not have affinity to the oestrogen receptor but they inhibit the growth of the hormone-independent mammary carcinoma cells MDA-MB-231 (Fig. 1) and bind to nucleosides and nucleotides (Table 1). Intercalation was not observed.
Oxygen plasma treatment as a surface functionalization technique is discussed. Oxygen-containing functionalities were introduced on the surface of high- (HDPE) and low-density polyethylene (LDPE) by glow discharge. The number of surface hydroxyl groups was increased by a post-discharge wet treatment in a reducing solu…
A theory is presented for the variation of the polydispersity index measured in a dynamic light scattering experiment performed on a suspension of aggregating colloidal particles. The analytical forms of this index, calculated by cumulants analysis, are described for various models of colloidal aggregation and numeric…
A carbon soot formed by arc evaporation and activated by heating under carbon dioxide is found to have a surprisingly high internal micropore volume (> 0.25 ml g–1) and an apparent BET surface area of ca. 700 m2 g–1, a large proportion of the pores are ca.⩽5 Å; transmission electron microscopy shows a highly disordere…
Potentiometric and calorimetric data for the complexation of lanthanide(III) cations by the neutral nitrogen-donor ligands diethylenetriamine or triethylenetetramine in anhydrous dimethyl sulfoxide at 25 °C and in an ionic medium of 0.1 mol dm–3 NEt4ClO4 have been obtained. All the complexes are strongly enthalpy stab…
Antonius Herry Cahyana, Yoshihiro Shuto, Yoshiro Kinoshita; Antioxidative Activity of Porphyrin Derivatives, Bioscience, Biotechnology, and Biochemistry, V
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface structure determination of thin films of benzimidazole on copper using surface enhanced Raman spectroscopyMary L. Lewis, Lars Ledung, and Keith T. CarronCite this: Langmuir 1993, 9, 1, 186–191Publication Date (Print):January 1, 1993Publication History Published onlin…
The room‐ and high‐temperature mechanical properties or a high‐strength, sintered silicon carbide were evaluated Room‐temperature strength was measured in four‐point bending. The room‐temperature fracture toughness was determined using a precracked single‐edge‐notched beam (SENB) bridge indentation technique. The high…