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。
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExchange coupling in copper dimers with purine ligandsD. Sonnenfroh and R. W. KreilickCite this: Inorg. Chem. 1980, 19, 5, 1259–1262Publication Date (Print):May 1, 1980Publication History Published online1 May 2002Published inissue 1 May 1980https://pubs.acs.org/doi/10.1021/…
The ESR spectra of tetragonal-octahedral dichlorotetrakis(pyridine)- and dichlorotetrakis(pyrazole)cobalt(II) have been recorded. The former yields 811 = 3.33 and g, = 4.46, and the latter yields gl = 2.14, gz = 4.55, and g3 = 5.83. The g values of tetragonal-octahedral complexes are related to the bonding abilities o…
An analytical model of the satellite photosheath is obtained in the presence of spacecraft charging. The combined potential is described by a combination of monopole and dipole contributions. This simple monopole‐dipole model predicts the saddle point behavior found in computer simulations. Applications to daylight ch…
The chemical potential μ and the kinetics of the nearest-neighbour-site-exclusion simple-cubic lattice gas have been investigated using the Monte Carlo method. The existence of a second-order phase transition at a reduced density of 0-43 and with μ/kT = 0.06 has been verified. It is shown that the Haven ratio, the rat…
SUMMARY The growth of individuals from a copper‐tolerant and a non‐tolerant population of Ectocarpus siliculosus (Dillw.) Lyngbye, in media containing copper (0.10 mg 1 ‐1 ), cobalt (0.10 mg 1 ‐1 ), zinc (0.25 mg 1 ‐1 ) or cadmium (1.50 mg 1 ‐1 ) was measured using a wet wt method. The copper‐tolerant population was f…
Abstract The ability of adsorbing iodine in different organic solutions by chitosan was studied by sorption isotherm measurements. The ability was found to be larger in polar solvents than in nonpolar solvents. The form of the chitosan samples, such as film, powder, and flake, had no influence on the adsorption behavi…
Esters in the homologous series 4-alkoxyphenyl 4'-alkylbenzoates, 1a, have been synthesized with both straight and methyl-branched R-groups from C3-C6, plus n-C9 and n-C10 and with straight chain R'O-groups = C1-C8, C10, C12, C14 and C16. The mesophase transitions and properties were studied by hot-stage microscopy; D…
Thalassiosira oestrupii (Ostenfeld) Hasle was studied from the southern Indian Ocean, Wed-dell Sea, and northern Atlantic Ocean. It has the longer extension of the strutted process inwards, with three small columnar supports. A single strutted process near the central areola is 2-3 areolae away from the single labiate…
Abstract One hundred years ago, Edison succeeded in preparing carbon fibers for his incandescent lamp bulb by thermal decomposition of natural polymeric fibers. Ten years ago, progress reports about “Novel Forms of Carbon” predicted outstanding properties and promising new applications for the carbonization products o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoemission studies of electron localization at very low excess energiesH. Neff, J. K. Sass, H. J. Lewerenz, and H. IbachCite this: J. Phys. Chem. 1980, 84, 10, 1135–1139Publication Date (Print):May 1, 1980Publication History Published online1 May 2002Published inissue 1 M…
A novel recording process for the formation of phase volume holograms at up to 1500 cycles/mm is described. The term silver halide (sensitized) gelatin or SHG denotes an all-gelatin phase material, which records the initial image information through photon absorption by the silver halide. Our process uses a reversal b…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and physical properties of hexakis(isothiocyanato)technetate(III) and -(IV) complexes. Structure of the [Tc(NCS)6]3- ionH. S. Trop, A. Davison, A. G. Jones, M. A. Davis, D. J. Szalda, and S. J. LippardCite this: Inorg. Chem. 1980, 19, 5, 1105–1110Publication Date (…
A new design technique for multilayer reflectors is presented It is useful when slight absorption by one or both of the coating materials limits the performance of the reflector. The basic procedure is to add layers to a given substrate or multilayer system one pair at a time. The thickness of each layer is chosen to…
Abstract Coating of polyethylene (PE), poly(vinyl fluoride) (PVF), poly(tetrafluoroethylene) (PTFE), and poly(vinyl chloride) (PVC) films with flow discharge‐polymerized acetylene was investigated. The influence of glow discharge experimental conditions on the nature of the coated layer, the films' wettability, surfac…
The extended muffin tin orbitals technique was applied to study electronic properties of polyethylene (PE), polytetrafluoroethylene (PTFE), and polyacetylene (PA). The computed optical gap is 9 and 6.2 eV, respectively, for PE and PTFE whereas it is 1.2 to 1.7 eV for PA depending on the isomeric forms. Three dimension…
Gas phase x-ray photoelectron spectra of some transition metal acetylacetonates, M(AcAc)2, (M=Co,Ni,Cu) are reported. The metal 2p, 3s, and 3p core levels and the O 1s and C 1s binding energies have been obtained. Satellites were observed to higher binding energies from the metal 2p, 3s, and 3p levels and the O 1s lev…
The evolution of the electron emission of impregnated cathodes has been measured over many thousands of hours of operation at various temperatures in diodes and traveling-wave tubes. Certain physical methods were used to investigate the correlation between these results and the mechanisms of cathode operation: X-ray f…
Glass-ceramics which have played an ever increasing role in science and technology in the last two decades are the most widely used representative of a new type of partly crystalline or semi-amorphous materials. They can be prepared by induced crystallization of glass-forming melts. Part 1 (which appeared in the prece…
Abstract Graft copolymerization of methyl methacrylate (MMA) was carried out on both defatted and bleached jute fibers using ceric ammonium sulfate (CAS) as the initiator. In order to obtain the optimum condition for grafting, the effects of initiator concentrations, temperature, time of reaction, lignin content of ju…
Finite element (FE) numerical simulation was employed for studying the influence of geometrical factors on the rate of leveling of a triangular surface profile during anodic dissolution in ECM at constant interelectrode gap under conditions of primary current distribution. Theoretical results were verified experimenta…