New Nonlinear Optical Chromophore: Synthesis, Structures, and Optical Limiting Effect of Transition-Metal Clusters (n-Bu4N)3[WM3Br4S4] (M = Cu and Ag)
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Azo Polymers for Reversible Optical Storage. 4. Cooperative Motion of Rigid Groups in Semicrystalline Polymers
Polarized light induces a preferred orientation of azobenzene groups through photochemical trans-cis-trans processes. Stronger orientation tendencies exist if the azo-containing polymers are crystalline or liquid crystalline and the cooperative reorientation of nonactive mesogens of similar shape has been demonstrated…
Depolarized-light-scattering study of orthoterphenyl and comparison with the mode-coupling model
The dynamics of the molecular glass-forming liquid orthoterphenyl above the glass-transition temperature was studied combining several experimental techniques: depolarized Raman, depolarized Rayleigh-Brillouin light scattering, and photon correlation spectroscopy in the temperature range from 250 to 440 K. The combine…
Thermodynamics of fluids in quenched disordered matrices
Using the replica method, we derive the thermodynamic relations for a fluid in equilibrium with a quenched porous matrix. In particular, the appropriate Gibbs–Duhem equation is obtained as well as the equivalence between grand canonical and canonical ensembles. The exact compressiblity and virial equations are derived…
Mechanism of Apparent .pi.-Allyl Rotation in (.pi.-Allyl)palladium Complexes with Bidentate Nitrogen Ligands
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of Apparent .pi.-Allyl Rotation in (.pi.-Allyl)palladium Complexes with Bidentate Nitrogen LigandsAdolf Gogoll, Joergen Oernebro, Helena Grennberg, and Jan-E. BaeckvallCite this: J. Am. Chem. Soc. 1994, 116, 8, 3631–3632Publication Date (Print):April 1, 1994Publica…
Calcium Concentration Dependence of the Intergranular Film Thickness in Silicon Nitride
High‐resolution electron microscopy and nano‐beam analytical electron microscopy have been used to characterize both the intergranular silicate film thickness and its local composition in a series of high‐purity Si 3 N 4 ceramics doped with 0–450 at. ppm Ca. Calcium was detected at both two‐grain junctions and triple…
Ferro- and Ferrimagnetic Ordering in a Two-Dimensional Network Formed by Manganese(II) and 1,3,5-Tris[p-(N-tert-butyl-N-oxyamino)phenyl]benzene
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFerro- and Ferrimagnetic Ordering in a Two-Dimensional Network Formed by Manganese(II) and 1,3,5-Tris[p-(N-tert-butyl-N-oxyamino)phenyl]benzeneKatsuya Inoue and Hiizu IwamuraCite this: J. Am. Chem. Soc. 1994, 116, 7, 3173–3174Publication Date (Print):April 1, 1994Publication…
Densities, Viscosities, Speeds of Sound, and Water Solubilities of Some Polypropylene Glycol Ether Derivatives in the Temperature Range 273.15-323.15 K
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDensities, Viscosities, Speeds of Sound, and Water Solubilities of Some Polypropylene Glycol Ether Derivatives in the Temperature Range 273.15-323.15 KJohn P. Idoux, Cynthia K. McCurry, and Tejraj M. AminabhaviCite this: J. Chem. Eng. Data 1994, 39, 2, 261–265Publication Dat…
Application of diamond-like carbon film as protection and antireflection coatings of ZnS elements
In the present study, the rf plasma chemical vapor deposition technique is applied to directly deposit a diamond-like carbon (DLC) film onto a zinc sulfide (ZnS) substrate with excellent adhesion. Great attention is paid to the investigation of the correlation between the deposition process parameters and the structur…
Development of detection and diagnostic techniques for partial discharges in GIS
This paper describes detection and diagnostic techniques for partial discharges in gas insulated substations (GIS). Partial-discharge current waveforms of SF/sub 6/ gas and external noise characteristics of actual substations were investigated, and a measuring system having sensors in GIS and employing frequency range…
Boron Chemical Shifts in B6O
The XPS spectrum of the boron suboxide, B6O, is reported. The spectra were obtained on a powder sample that was prepared and characterized at the Diamond Technology Center, Norton Company. It was characterized with x-ray diffraction and was prepared by established methods. The B 1s peak is split into two components of…
Mixed-Oxide Fuel Fabrication Technology and Experience at the Belgonucléaire and CFCa Plants and Further Developments for the MELOX Plant
Plutonium recycling in light water reactors (LWRs) has progressively become a fact. Over 200 t of mixedoxide (MOX) fuel have been produced in the COGEMA and BELGONUCLÉAIRE plants in the last 7 yr. Fuel loaded in European reactors—mainly MIMAS fuel—is presenting satisfactory in-core behavior and performance.Fuel fabric…
Synthesis and Characterization of Porphyrin-Sugar Carbon Conjugates
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Characterization of Porphyrin-Sugar Carbon ConjugatesGiovanni Casiraghi, Mara Cornia, Franca Zanardi, Gloria Rassu, Enzio Ragg, and Rita BortoliniCite this: J. Org. Chem. 1994, 59, 7, 1801–1808Publication Date (Print):April 1, 1994Publication History Published…
Characterization of an Activated Alumina Claus Catalyst by XPS
In this study, the surface composition of a fresh, commercial, alumina Claus catalyst (Alcoa S-100) was examined by x-ray photoelectron spectroscopy (XPS). This article presents the main XPS core lines and the valence band spectra obtained for the Claus catalyst. The electronic record includes the Al 2p, Al 2s, O 1s,…
AgO XPS Spectra
XPS data have been obtained from a pressed AgO powder sample obtained from AESAR. Obtaining high-quality XPS data from a single oxide state is difficult because multiple oxide states, hydroxides, and other contaminants are usually present. The AgO sample was annealed in vacuum at 100°C for 30 min to reduce the amounts…
Detailed modeling of eddy current effects for transformer transients
A detailed time domain model for the eddy current losses in the windings of a transformer is presented. The basic elements for the derivation of the model are the turns which may be combined into sections. The model is expressed as an R-matrix. Its diagonal elements were fitted using a series Foster circuit while for…
A New Crevice Corrosion Testing Method and its Use in the Investigation of Oil Stain
A new electrochemical method was developed to investigate crevice corrosion and its inhibitors. A wire beam electrode was used to allow electrochemical parameters to be measured directly from the crevice area. As an example, oil stain was investigated using this method.
7000 high‐eficiency cells for a dream
Abstract This paper reports on the fabrication of high‐eficiency back‐side contact silicon solar cells in large volume for the '93 World Solar Challenge. the cells were used exclusively on the winning car, the Dream, made by Honda R&D Company, Ltd. the cell efficiencies were between 20% and 22% (AMI.5G, 25°C) (G =…
Crystal structure refinement of lithiophorite
AssrRAcr A single-crystal X-ray diffraction study of lithiophorite [(Al,Li)MnO,(OH)r] revealed that the structure is trigonal (R3m), not monoclinic as previously reported, and yielded unit-cell parameters a: 2.9247(4), c:28.169(6) A. fne study confirmed that the structure consists of alternately stacked layers of Mn-O…
Solid-State Synthesis and Characterization of Silver Vanadium Oxide for Use as a Cathode Material for Lithium Batteries
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-State Synthesis and Characterization of Silver Vanadium Oxide for Use as a Cathode Material for Lithium BatteriesRandolph A. Leising and Esther Sans TakeuchiCite this: Chem. Mater. 1994, 6, 4, 489–495Publication Date (Print):April 1, 1994Publication History Published o…