Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
It is well known that the intermetallic compound ${\mathrm{DyAl}}_{2}$ is ferromagnetic and exhibits a change in the easy direction of magnetization from 〈100〉 to 〈111〉, for a critical applied magnetic field in the 〈111〉 direction. Using a simple model which includes the crystalline electric field and the exchange int…
Direct and indirect anion exchange methods have been used to intercalate a [ZnII2–CrIII] lamellar double hydroxide (LDH), with [Cu(nta)]− and [Ni(nta)]− (nta = nitrilotriacetate). For the direct method, a solution of the pre-formed complexes was used to intercalate the LDH while for the indirect method the anionic nta…
The synthesis and characterisation of lanthanide complexes of mono- and tetra-amide β-cyclodextrin derivatives of 1,4,7,10-tetraazacyclododecane tetraacetate (DOTA) are reported. Luminescence and relaxivity measurements confirm that the Eu, Tb and Gd complexes of the eight-coordinate mono-amide ligand possess one boun…
The synthesis, X-ray structure, and EPR measurements of the integer-spin linear-chain antiferromagnet [Ni(ox)(dmiz)2] (where ox = C2O4(2-) and dmiz = 1,2-dimethylimidazole) are presented. The sign and size of the single-ion zero field splitting (Zfs) of the divalent Ni have been determined by high field/high-frequency…
A new simple and rapid polycondensation reaction of 4,4′-carbonyl-bis(phthaloyl-L-alanine)diacid chloride [N,N ′-(4,4′-carbonyldiphthaloyl)]bisalanine diacid chloride with several diphenols, such as bisphenol-A, phenolphthalein, 1,8-dihydroxyanthraquinone, 4,4′-dihydroxybiphenyl, 1,5-dihydroxynaphthalene and hydroquin…
A day in the life of a hard-sphere suspension (Wilson C K Poon). Light scattering and rheology of complex fluids far from equilibrium (David J Pine). Polymer physics: from basic concepts to modern developments (Alexei Khokhlov). Rheology of linear and branched polymers (Tom McLeish). Introduction to colloidal systems…
An increase in the frequency of fuel degradation following a primary breach in boiling water reactor (BWR) rods was observed during the late-1980s and early 1990s; these rods were often found to contain axial splits. Several failed rods containing splits have been returned to the Vallecitos Nuclear Center (VNC) for po…
Phenylenediamines, 4-aminophenol and 1,4-hydroquinone were polymerized via the catalysis of horseradish peroxidase in dioxane at ambient conditions by using hydrogen peroxide as the oxidant. Polymers formed in good yields are black powders soluble in dimethylformamide and dimethylsulfoxide. Several factors influencing…
Zircaloy-4 cladding has been oxidized in autoclave at 633 K with various chemistry conditions ([Li+] = 0, 10, 70, 700 ppm and [B] = 0, 650 ppm as boric acid) to quantify the effect of lithium hydroxide and boric acid on the oxidation kinetics and to provide oxide films that have been analyzed by SIMS, SEM, and RAMAN s…
The adsorption and desorption behavior of protein human serum albumin (HSA) on magnetic polymer particles covered by thermosensitive polymers was investigated. The results showed that adsorption was dependent mainly on the properties of the particle surface. By increasing the temperature, particles deswelled and were…
A surface silyl modification and surfactant removal of acid-synthesized mesoporous silica process in a single step is investigated; the surfactant–silyl exchange process allows a large amount of surface attachments of silane.
The crystal chemistry of the Sm3+ to Sm2+ reduction in tetraborate lattices was investigated. In crystalline SrB4O7 in air it is mainly Sm2+ that is incorporated from a melt or glass containing predominantly Sm3+. For the process in air, a reduction and pick-up mechanism is assumed to take place at the crystal/nutrien…
SrAl2O4 phosphor excited with fluorescent light or sunlight, has been recently reported to be a long-lasting afterglow (AG) phenomenon. However, the AG mechanism has not been clarified yet. In this study, the long-lasting AG mechanism of SrAl2O4 phosphors doped with Eu and/or Dy, was investigated on the basis of AG, p…
Changes in the elemental composition of the diatom Asterionella formosa within mixed phytoplankton samples were determined over the spring bloom period using energy dispersive X-ray microanalysis. Using a 10 kV electron microprobe, X-ray information from the top 1-2 µm of the cell revealed overall mean concentrations…
Various molar ratios of 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) and para-substituted meso-tetraphenylporphyrins (H2T(4-X)PP, X = H, Cl, CH3, CH(CH3)2, OCH3) in dichloromethane at room temperature in several days always afforded (DDQ)2H2T(4-X)PP molecular complexes as the sole products. The very close correspondence…
Poly(ethylene terephthalate)/copoly(succinic anhydride/ethylene oxide) copolymers, (PET/PES copolymers) were synthesized by the transreaction between PET and PES and characterized with GPC, 1H NMR, and DSC. Most of the copolymers obtained were random copolymers. The films cast of these copolymers were transparent. The…
Poly(ester urethane) (PU) with functional groups (amide, hydroxyl, carboxyl) on surfaces were prepared by grafting monomers such as acrylamide (AAm), hydroxyethyl acrylate (HEA), and methacrylic acid (MAA) onto the PU membranes. Grafting copolymerization was carried out by the combined use of photooxidization and UV i…
Cytocompatible polyurethane (PU) surface was prepared by photo-grafting 2-hydroxyethyl acrylate (HEA) onto the membrane surface. Graft polymerization was conducted by combining the use of the photo-oxidation and irradiation grafting. PU membrane was photo-oxidized to introduce the hydroperoxide groups onto the surface…
The adsorption of methane on Zn-exchanged zeolites was studied theoretically by density functional theory (DFT). Diverse types of active sites were employed, such as: a Zn(II) cation, which was placed on different rings (4T and 5T), a ZnO (in a tetramer configuration) cluster and a [Zn–O–Zn]2+ dimer complex. The Zn(II…
A series of copper containing mesoporous silicas has been prepared at room temperature using tetramethylorthosilicate as the source of silicon, a quaternary ammonium chloride salt as organic template surfactant and copper complexes obtained from organofunctional silicon molecules as ligands. Using this synthetic route…