Vincenzo G. Albano、Paolo Chini、Gíanfranco Ciani 等 5 位作者1980-01-01Journal of the Chemical Society Dalton Transactions
The title complex crystallizes in the triclinic space group P with unit-cell dimensions a= 12.17(1), b= 13.28(1), c= 8.67(1)Å, α= 97.78(8)°, β= 89.93(8)°, γ= 98.93(8)°, and Z= 2. The structure has been solved from X-ray single-crystal counter data and refined by least-squares calculations to R= 0.07 for 1 689 signific…
Organometallic Complex Synthesis and CatalysisMetal complexes synthesis and propertiesMagnetism in coordination complexes
J. A. Kittrick1980-01-01Soil Science Society of America Journal
Abstract A major drawback of mineral stability determinations by the solubility method has been that oftentimes years are required to reach equilibrium. Minimum equilibration times require that minimum amounts of solution be equilibrated with maximum amounts of mineral. Thus, about 10 ml of solution was displaced from…
Soil and Unsaturated FlowClay minerals and soil interactionsIron oxide chemistry and applications
K. Nakamura、K. Sekiguchi1980-01-01Marine Ecology Progress Series
Mating behavior and oviposition in the pycnogonid Pt-opallene longiceps (Bi'hm) were observed in the laboratory. The female collects the eggs laid and transfers them to the male. The male forms bracelet-like egg masses and cames them on its ovigerous legs until hatching. The processes of copulation and oviposition are…
Diatoms and Algae Research
J A Nowell、J. B. Pawley1980-01-01PubMed
Methods for preparing experimental animal tissues for the scanning electron microscope (SEM) have evolved from so many sources, with such lack of standardization that interpretation of the results is difficult, and inter-investigation comparisons usually impossible. To distinguish the surface changes inherent in any p…
Electron and X-Ray Spectroscopy TechniquesAnimal testing and alternatives
Joel Bernstein、Bernard S. Green、Miriam Rejtö1980-01-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-state photooligomerization of an extended chiral bifunctional monomer, (+)-2,4:3,5-di-O-methylene-D-mannitol 1,6-di-trans-cinnamateJoel Bernstein, Bernard S. Green, and Miriam RejtoCite this: J. Am. Chem. Soc. 1980, 102, 1, 323–328Publication Date (Print):January 1, 19…
Carbohydrate Chemistry and SynthesisChemical Synthesis and AnalysisPhotochromic and Fluorescence Chemistry
Jehane Ragaï、K. S. W. Sing、Raouf Sh. Mikhail1980-01-01Journal of Chemical Technology & Biotechnology
Abstract Titania gels were prepared by oxidation of precipitates of hydrous Ti III oxide obtained at different pH values from aqueous titanous chloride by the addition of ammonia. The gels were dried at 110–120°C (383–393 K) and their surface properties were characterised by nitrogen adsorption at 196°C (77 K). The ni…
Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisAerogels and thermal insulation
M. Aguilar、C. Gonzalo、G. Godefroy1980-01-01Ferroelectrics
The luminescence emission under X-ray and ultraviolet (UV) excitation of BaTiO3 crystals (obtained by different methods and with various amount of iron doping) has been obtained in a wide temperature range. The temperature dependence of the half-width, position of the maximum and emission intensity of the various band…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhotorefractive and Nonlinear Optics
Nevenka Bresciani–Pahor、Mario Calligaris、G. Nardin 等 6 位作者1980-01-01Journal of the Chemical Society Dalton Transactions
The crystal structure of a natural calcium heulandite (Ca)heu and a partially silver-exchanged heulandite (Ag,Ca)heu is reported. The monoclinic crystals, space group C2/m, have cell parameters a= 17.672(6), b= 17.930(6), c= 7.443(4)Å, β= 116.5(1)°, Z= 1, and formula Ca3.1Na1.1K0.1Al7.6Si28.5O72·24H2O (from electron m…
Crystal Structures and PropertiesClay minerals and soil interactionsMineralogy and Gemology Studies
L. A. Marusak、L. N. Mulay1980-01-01Physical review. B, Condensed matter
The variation of the periodicity along the $C$ axis (${N}^{\ensuremath{'}}C$) as a function of temperature in ${\mathrm{Fe}}_{9}$${\mathrm{S}}_{10}$, where ${N}^{\ensuremath{'}}$ varies between 5 and 1 over the range 300-600 K, has been investigated. The antiferromagnetic to ferrimagnetic ($\ensuremath{\lambda}$) phas…
Microstructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsMagnetic Properties of Alloys
G. D. Danilatos1980-01-01Scanning
Abstract A new detection configuration for the Scanning Electron Microscope (SEM) has been devised, which allows the imaging of the surfaces of a specimen in the open room, i.e., at atmospheric pressure. Such a device gives rise to a new microscope: the Atmospheric Scanning Electron Microscope (ASEM). In this configur…
X-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy TechniquesPhotocathodes and Microchannel Plates
Alexis Lycourghiotis、C. Defossé、Francis Delannay 等 4 位作者1980-01-01Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases
The effect of preparation method, calcination temperature and sodium content on the dispersion of molybdenum on the surface of γ-Al2O3, as well as on the kind of molybdenum species formed thereon, has been studied using diffuse reflectance spectroscopy (d.r.s), X-ray powder analysis (X.r.), X-ray photoelectron spectro…
Catalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesAdvanced Materials Characterization Techniques
Paul D. Benya1980-01-01Kidney & Blood Pressure Research
Primary cultures of rabbit corneal endothelial cells were labeled with proline and the medium proteins were fractionated by sedimentation through sucrose density gradients. A new collagen, endothelial cell (EC) collagen, was completely separated from type IV collagen without denaturation by this technique. Sodium dode…
Proteoglycans and glycosaminoglycans researchCorneal Surgery and TreatmentsCollagen: Extraction and Characterization
M. Miljak、B. Korin、J. R. Cooper 等 5 位作者1980-01-01Journal de physique
We report magnetic susceptibility (χs) data from 2.6 to 300 K for ten quasi one-dimensional organic conductors, most of which obey the law χs = AT-α with α ≃ 0.7 below about 20 K. Results for irradiated TTF-TCNQ and other évidence indicate that such behaviour can occur for a small concentration of unpaired spins at th…
Physics of Superconductivity and MagnetismAdvanced Condensed Matter PhysicsOrganic and Molecular Conductors Research
N. Mermilliod、L. Zuppiroli、Bertrand François1980-01-01Journal de physique
A measurement of the thermal conductivity and the specific heat of pure and iodine doped samples of polyacetylene (CH)x are presented here. The thermal conductivity of pure (CH)x is about 75 mW/cm . K at room temperature and decreases monotonically to 1.6 mW/cm . K at 25 K. The specific heat dependence with temperatur…
Advanced Battery Materials and TechnologiesIonic liquids properties and applicationsConducting polymers and applications
J.A. Turnbull1980-01-01Radiation Effects
The paper reviews the existing experimental evidence for irradiation induced re-solution and also possible explanations for the mechanism. The importance of re-solution is considered with regard to intragranular bubbles and the accumulation of gas on grain boundaries. It is concluded that re-solution is most effective…
Nuclear reactor physics and engineeringRadioactive element chemistry and processingNuclear Materials and Properties
G. Marwaha、Nafa Singh、V. K. Mathur1980-01-01Radiation Effects
Thermoluminescence spectra of CaS:Bi dosimeter have been recorded for the two glow peaks occuring at 60°C and 200°C. Due to the presence of two groups of traps, retrapping mechanism has been investigated in order to get the best performance out of this dosimeter. The effect of annealing, storage and pre-heating on the…
Luminescence Properties of Advanced MaterialsPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallography
Gin‐ya Adachi、Katsuhiko Tomokiyo、Kenji Sorita 等 4 位作者1980-01-01Journal of the Chemical Society Chemical Communications
Divalent europium complexes with crown ethers give a remarkably intense, blue emission under u.v. radiation.
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesNanocluster Synthesis and Applications
J. J. Benattar、F. Moussa、M. Lambert1980-01-01Journal de physique
The smectic F phase of TBPA is characterized by a stacking of weakly coupled pseudo-hexagonal layers. A careful analysis of the shape of the Debye-Scherrer lines enables a comparison to the theoretical predictions concerning the structure of 2d systems : a correlation length of about 250 A has been found within the la…
Liquid Crystal Research AdvancementsNonlinear Dynamics and Pattern Formation
W. H. Madhusudan、Krishnaswamy Jagannathan、Parthasarathy Ganguly 等 4 位作者1980-01-01Journal of the Chemical Society Dalton Transactions
Rare-earth trioxocobaltates(III), Ln[CoO3], with Ln = Pr, Nd, Tb, Dy, and Yb exhibit low-spin to high-spin transitions of cobalt characterised by a maximum in the Δχ–1 against temperature plots where Δχ is the cobalt contribution to the magnetic susceptibility. The susceptibility behaviour is distinct from that of La[…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics
R. W. Munn、R. Silbey1980-01-01Molecular crystals and liquid crystals
A general theory of exciton (and electron) transport in perfect molecular crystals is discussed. The emphasis is on qualitative results and the elucidation of the effect of exciton and phonon bandwidth on the scattering of excitons and on transport. Various microscopic models are discussed in this light.
Perovskite Materials and ApplicationsMolecular Junctions and NanostructuresOrganic and Molecular Conductors Research