The Space Dependence of Reactor Noise-II Calculations
"The Space Dependence of Reactor Noise-II Calculations." Nuclear Science and Engineering, 39(3), pp. 413–414
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72. Mitteilung über Flechteninhaltsstoffe
Decarboxyschizopelt-Säure liefert bei der Entmethylierung mit Bortribromid Di-O-desmethyl-decarboxyschizopelt-Säure, die eine positive Gibbssche Reaktion zeigt. Daraus folgt für Schizopeltsäure Struktur 1 (1.6-Dimethoxy-3.8-dimethyl-7-methoxycarbonyl-dibenzofuran-4-carbonsäure).
Effect of Time on Infrared Spectra of Epoxy Pyrolyzates
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Time on Infrared Spectra of Epoxy PyrolyzatesEugene CerceoCite this: Ind. Eng. Chem. Prod. Res. Dev. 1970, 9, 1, 96–100Publication Date (Print):March 1, 1970Publication History Published online1 May 2002Published inissue 1 March 1970https://pubs.acs.org/doi/10.1021…
Raman Spectra of Vitreous B_2O_3 and of Some B_2O_3-Bi_2O_3-Al_2O_3 Glasses
Raman spectra, with polarizations, are given for a series of B2O3–Bi2O3–Al2O3 glasses in the composition range 0–96 wt% Bi2O3. The spectra of the mixed glasses are different from that of B2O3 except at the lowest Bi2O3 concentration. The low-wavenumber region of the mixed glasses changes in a systematic fashion, with…
Response of an Elastic Half Space to Uniformly Moving Circular Surface Load
The problem of a uniformly moving circular surface load of a general orientation on an elastic half space for two types of load distribution, viz., “uniform” and “hemispherical,” is considered. The solutions have been obtained in integral form. The displacements on the surface of the half space, in the case in which t…
Catalytic Synthesis of Lactic Acid from Acetaldehyde, Carbon Monoxide, and Water
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic Synthesis of Lactic Acid from Acetaldehyde, Carbon Monoxide, and WaterS. K. Bhattacharyya, S. K. Palit, and A. R. DasCite this: Ind. Eng. Chem. Prod. Res. Dev. 1970, 9, 1, 92–95Publication Date (Print):March 1, 1970Publication History Published online1 May 2002Publ…
Kinetics of Oxidation of Natural Organic Material in Clays
The kinetics of burnout of natural organic matter in building clays were investigated. The results indicate that burnout occurs in two stages for extruded bodies. The temperature dependence of the reaction rate during the first stage was the same as that for the diffusivity of an O 2 /CO/CO 2 gas mixture. It is, there…
Absolute thermoelectric power and resistivity of Cr[sbnd]V and Cr[sbnd]Mn alloys
The absolute thermoelectric power S and the electrical resistivity p of polycrystalline samples were determined between 80°K and 580°K for Cr[sbnd]V alloys with up to 77 at. % V and between 300° and 750°K for Cr[sbnd]Mn alloys with up to 10 at. % Mn respectively. S of all alloys is positive. The resistivity and the th…
Molecular engineering in the design of microwave ferrimagnetic garnets
Recent advances in the study of microwave ferrites and garnets have resulted in a better understanding of the relationship between magnetic properties and the fundamental crystal structure. This article presents a review of the way in which the crystal structure of microwave garnets may be designed in order to realize…
EPR of O2 Impurity in Solid N2
The EPR spectrum of O2 impurity in solid N2 has been observed at K band and at X band. The results are consistent with the specific-heat results for this system and indicate that the Σ3 state is split in zero field by 105 ± 15 GHz. A small temperature-dependent splitting of the upper doublet is indicated by the result…
Copolymers of Starch and Polyacrylonitrile. Influence of Granule Swelling on Copolymer Composition under Various Reaction Conditions
Molecular weights and grafting frequencies of graft copolymers prepared with ferrous ammonium sulfate-hydrogen peroxide initiation showed a dependence on granule swelling similar to that found with ceric ammonium nitrate (increased swelling of starch granules decreased the number of grafted polyacrylonitrile chains an…
Silk-Like Fiber K-6 (Chinon)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilk-Like Fiber K-6 (Chinon)S. MorimotoCite this: Ind. Eng. Chem. 1970, 62, 3, 23–32Publication Date (Print):March 1, 1970Publication History Published online1 May 2002Published inissue 1 March 1970https://pubs.acs.org/doi/10.1021/ie50723a006https://doi.org/10.1021/ie50723a0…
Neutron damage in molybdenum irradiated at high temperatures
Transmission electron microscopy has been used to characterize the microstructure of polycrystalline molybdenum irradiated at elevated temperatures (> 0·3T m). Irradiation at 700°c produces dislocation loops within the grains and denuded zones along grain boundaries, while irradiation at 1000°c results in generally lo…
The symmetry properties of the ND1 absorption centre in electron- irradiated diamond
The ND1 centre is produced in natural and synthetic diamond by primary radiation damage, but only occurs in strength when substantial concentrations of nitrogen are present in the lattice. The optical absorption associated with this centre consists of a sharp no-phonon line at 3.149 ev (80 degrees K) and phonon-assist…
Ultrastructural and histochemical studies on the epithelium revestment layer in the tube feet of the starfish Asterina stellifera
Abstract The “cuticle,” which revests the starfish tube foot, has been studied by electron microscopy and the findings correlated with histochemical observations. The “cuticle” is composed by two distinct zones; an outer zone including numerous microvilli, which extend from the inner zone into and through a fibrillar…
The Impact Between a Rigid Sphere and a Thin Layer
A simple model is presented for studying the impact between a rigid sphere and a thin layer of relatively soft material supported on a rigid substrate. By assuming that the major loss of energy during impact is due to the plastic deformation of the layer, an approximate analysis is made for computing the energy loss f…
Sharp-Line Luminescence ofRe4+in Cubic Single Crystals ofCs2ZrCl6andCs2HfCl6
Sharp-line luminescence has been observed for ${\mathrm{Re}}^{4+}$ ($5{d}^{3}$) in single crystals of ${\mathrm{Cs}}_{2}$Zr${\mathrm{Cl}}_{6}$ and ${\mathrm{Cs}}_{2}$Hf${\mathrm{Cl}}_{6}$ at low temperature. Well-resolved vibronic structure is seen, forming nearly perfect mirror symmetry between emission and absorptio…
Optical Absorption Spectrum of ErCrO3
We present a study of the optical absorption spectrum of ErCrO3 as a function of temperature and magnetic field. Three types of processes are observed: (1) creation of a Cr+3 R-line exciton, (2) excitation of the Kramers-split Er+3 single-ion states, and (3) the simultaneous excitation of a Cr+3 exciton and a spin-fli…
Moessbauer spectra of tin complexes of phthalocyanine and tetraarylporphines
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMoessbauer spectra of tin complexes of phthalocyanine and tetraarylporphinesMary O'Rourke and Brother Columba CurranCite this: J. Am. Chem. Soc. 1970, 92, 6, 1501–1505Publication Date (Print):March 1, 1970Publication History Published online1 May 2002Published inissue 1 Marc…
Ceric Ion Initiated Graft Polymerization onto Poly(vinyl Alcohol)
This paper describes the kinetics of the ceric ion-initiated graft co-polymerization of vinyl acetate-acrylonitrile to poly(vinyl alcohol). The graft copolymerization rate Rp was found to be first order with respect to the total concentration of the comonomer mixture [M], the concentration of vinyl alcohol repeating u…