Materials Literature
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The computer systems for planning and management of reactor decommissioning were developed for effective implementation of a decommissioning project. The systems are intended to be applied to construction of work breakdown structures and estimation of manpower needs, worker doses, etc. based on the unit productivity a…
Residues 1--10 of porcine fructose-1,6-bisphosphatase (FBPase) are poorly ordered or are in different conformations, sensitive to the state of ligation of the enzyme. Deletion of the first 10 residues of FBPase reduces k(cat) by 30-fold and Mg(2+) affinity by 20-fold and eliminates cooperativity in Mg(2+) activation.…
The present work was initiated to measure and compare tensile strengths (i.e., spall thresholds) of five different types/varieties of silicon carbide materials. Two of these materials were sintered, and the remaining three were hot-pressed. Three types of silicon carbides (one sintered by Sohio and. the other two hot-…
A comparison on the molecular heterogeneity of two whole metallocene short-chain branched polyethylenes (SCBPEs) with different hexene comonomer (butyl branching) content and their Cross-Fractionated (CF) fractions has been made. As elucidated by differential scanning calorimetry (DSC) thermal segregation experiments…
We report the results obtained from the studies of cholesteric gratings doped with a dichroic guest-host dye, G206. First, a dye-doped planar cholesteric texture was switched to a fingerprint texture. Using the pump (Ar + laser)–probe (He–Ne laser) technique, we then studied the diffraction characteristics of the Rama…
The temperature effect upon infrared-to-visible frequency upconversion fluorescence emission in off-resonance infrared excited Yb3+-sensitized rare-earth doped optical glasses is theoretically and experimentally investigated. We have examined samples of Er3+/Yb3+-codoped Ga2S3:La2O3 chalcogenide glasses and germanosil…
The as-deposited stress of typical high-reflectance extreme ultraviolet (EUV) Mo/Si multilayer mirrors is measured to be approximately ?410±10 MPa (compressive). These multilayers are deposited with dc magnetron sputtering and have near-normal incidence (5 deg) reflectances of 67.2±0.1% around 13.2 nm. The effect of b…
The syntheses of various squarylium dyes are reviewed in this paper. Possible applications of these dyes are also discussed, including their electrochromic, electroluminescence, electrophotographic and metal ion sensing properties.
In this paper a continuum description of deformable magnetized material including long‐range magnetic forces and magnetostriction is presented. Herein, magnetostriction and long‐range forces on the one hand, and magnetization and deformation on the other hand are considered simultaneously. Therefore, neither a strict…
The flow of liquid through foam confined in vertical tubes was investigated by measuring the velocity vf of the liquid front forced down by gravity for various flow rates Q. The power law relating the velocity to flow rate of the incoming liquid (vf
Plastic deformation can be applied to the processing or forming of semi-crystalline polymers. This work concerns the drawing of polypropylene (PP) sheets in order to modify their thermo-mechanical properties. PP sheets were rolled at 110°C to induce molecular orientation. A stable drawing process was carried out exper…
Tritium release behavior from Flibe (Li2BeF4) a potential liquid tritium breeding material was investigated. The main chemical form of tritium-containing species in Flibe was controlled to HT or TF by H2 partial pressure and F− potential in an in-pile experimental system. The release rate coefficients of HT and HF, an…
Nanocrystalline ZnS:Pb2+ is synthesised via a precipitation method. The influence of the particle size on the luminescence of nanocrystalline ZnS:Pb2+ is studied. Depending on the excitation wavelength, nanocrystalline ZnS:Pb2+ shows a very broad white (λexc = 380 nm) or red emission (λexc = 480 nm). The red and white…
Single-crystal magnetization, heat capacity and neutron diffraction studies of the bimetallic regular chain Mn II Ni II (NO 2 ) 4 (en) 2 (en = ethylenediamine) are presented. This compound exhibits ferromagnetic interactions between the Mn and Ni ions within the chains. The onset of long-range antiferromagnetic orderi…
Abstract Transmission electron microscope-analytical electron microscope analyses have been carried out on secondary minerals from pillow basalts with various degrees of alteration from the Juan de Fuca Ridge (ODP Leg 168). The electron microscopic data indicate that the alteration products consist mainly of phyllosil…
Polarized extended X-ray absorption fine structure spectroscopy (P-EXAFS) was used to study the sorption mechanism of Ni on the aluminous hydrous silicate montmorillonite at high ionic strength (0.3 M NaClO4), pH 8 and a Ni concentration of 0.66 mM. Highly textured self-supporting clay films were obtained by slowly fi…
To investigate the substitution of Ti 4+ for Si 4+ on tetrahedral sites in clinopyroxene, a series of Ti- bearing clinopyroxene compositions was synthesized in the system CaO-MgO-SiO 2 -TiO 2 (CMST) at pressures from 1 atm to 2 GPa and temperatures from 800 to 1200 °C. Along the join CaMgSi 2 O 6 (diopside)-CaMgTiSiO…
A covalently linked ultrathin multilayer film was fabricated from 2-nitro-N-methyl-diphenylamine-4-diazonium-formaldehyde resin (NDR) and phenol-formaldehyde resin (PR) in methanol in-situ. The UV-vis, XRD, AFM and FTIR show that this multilayer is of high regularity, smoothness and stability.
We report atomic resolution imaging of Cu-planar precipitates in aged Al-Cu alloys, known as Guinier-Preston (GP) zones, by high-angle annular detector dark-field scanning transmission electron microscopy. Single layered GP-I zones as small as 2 nm in length were resolved among densely populated GP-I zones, whereas do…
The experimental data on the optical and chiro-optical properties of crystals with the sillenite structure Bi12 M xO20 ± δ (M= elements of II–VIII groups) have been reviewed. The relations between the changes in the chemical composition, the crystal structure of Bi12 M xO20 ± δ compounds, absorption, circular dichrois…