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Showing papers by "Utsunomiya University published in 1974"



Journal ArticleDOI
TL;DR: In this paper, the emission spectra of sulfur in two modifications (zinc-blende and wurtzite structures) of ZnS and CdS are obtained with a two-crystal spectrometer.
Abstract: The $K\ensuremath{\beta}$ emission spectra of sulfur in $\ensuremath{\alpha}\ensuremath{-}\mathrm{MnS}$, FeS, CoS, NiS, and CuS, and in two modifications (zinc-blende and wurtzite structures) of ZnS and CdS are obtained with a two-crystal spectrometer. The spectra of FeS, CoS, and NiS consist of a broad band and are alike. The spectra from the modifications of ZnS and CdS are similar to each other. The spectrum of CuS consists of two prominent peaks and it is discussed in relation to the sulfur $K\ensuremath{\beta}$ emission spectra from $\ensuremath{\alpha}\ensuremath{-}\mathrm{sulfur}$ and NiS. The $K\ensuremath{\beta}$ emission bands of ZnS and CdS are comparatively narrow, while those of the other metal sulfides are very wide. Results are evaluated by comparing the $K\ensuremath{\beta}$ emission spectra of these metal sulfides with the $\mathrm{sulfur}\ensuremath{-}K$ absorption spectra and with the energy-band structures.

56 citations


Journal ArticleDOI
TL;DR: In this article, the authors investigated the temperature dependence of absorption band shape for transitions to the Jahn-Teller coupled states using a simple model by Longuet-Higgins et al.
Abstract: Temperature dependence of absorption band shape for transitions to the Jahn-Teller coupled states is investigated quantum mechanically using a simple model by Longuet-Higgins et al. It is found that a band shape for weak coupling which has a single band at low temperatures splits into two bands with increasing temperature. Comparing the results with those calculated by semiclassical method, it is shown that a quantum mechanical band shape reduces to a semiclassical one in strong and high temperature.

11 citations




Journal ArticleDOI
TL;DR: In this article, the results of an experimental study on a back-diffusion type ion source, which can be operated in any kind of gas at a pressure from 10 -6 to 10 -3 Torr, are described.
Abstract: The results of our experimental study on a back-diffusion type ion source, which can be operated in any kind of gas at a pressure from 10 -6 to 10 -3 Torr, are described. The source produces monoenergetic ions with a controllable kinetic energy from a few tens to several hundreds eV and density up to several times 10 7 cm -3 . The monoenergetic ions are neutralized by thermal electrons emitted from cathodes and hardly diverge during their run. They are available for the calibration of energy analyzers, experiments on collision processes of ions with atoms and so forth.

2 citations


Journal ArticleDOI
TL;DR: In this article, the main urinary peptides were roughly fractionated by combined columns of cation and anion exchange resins, and the peptides eluted from each column were further fractionated using a combination of various ion exchange resin and DEAF-cellulose column chromatography, paper chromatography and other methods.
Abstract: Urinary peptides were roughly fractionated by combined columns of cation and anion exchange resins, and the peptides eluted from each column were further fractionated by a combination of various ion exchange resins and DEAF-cellulose column chromatography, paper chromatography and other methods. From the fractions adsorbed on cation exchange resin, 13 homogeneous peptides could be isolated, and from the ones adsorbed on anion exchange resin, 8 glycopeptides could be found. Their amino acid compositions were analyzed. Although some fractions remain univestigated, an outline of the whole aspect of main urinary peptides has been clarified by this study.

2 citations


Journal ArticleDOI
TL;DR: In this paper, a comparison between two pulp refining methods, low consistency refining and high consistency refining, has been made, and the results show that the low consistency method has proven to damages and shortens the fibres, while the high consistency method loosens the fibre structure and makes it flexible with a minimum of fibre damages.
Abstract: There exist two kinds of methods for pulp refining ; that is, the low consistency refining and the high consistency refining. The low consistency refining method (LCR) has been conventionally used, but it has proved to damages and shortens the fibres. On the other hand, the high consistency refining (HCR) loosens the fibre structure and makes it flexible with a minimum of fibre damages, despite of the fact that HCR method requires more power in order to produce papers of maximum strength. This paper presents comparisons between these two methods from the following points of view. (1) Comparison of paper formation measured by the Bata-Radiograph method. (2) Comparison of the microstructure of the fibre by the scanning electron micrographs. (3) Comparison of dry paper physical properties. Our experiments have demonstrated the following. (1) The scanning electron micrographs of paper produced by each different rifining method show different shapes of fibre : In LCR method the outer layer of the fibre is removed in the lumpy shape, while external fibrillation of the HCR fibre is seen extensively and the fibre surface becomes fuzzy. (2) The paper formation by LCR method becomes poorer with high beaten pulp and the paper formation by HCR method grows better with high beaten pulp on the contrary to our expectation. (3) Uniform refining is a most necessary to obtain paper of good formation.

2 citations





Journal ArticleDOI
TL;DR: It is evident from these results that the induction of this type of fatty liver is due mainly to the triglyceride synthesis by both the fatty acid synthesis and the transesterification of fatty acid.
Abstract: Lipogenesis in the fatty liver of rat, which was induced by feeding an amino acid unbalanced diet containing 8% casein supplemented with 0.3% dl-methionine, has been studied by measuring the incorporation of glycerol-1-14C, palmitate-1-14C, citrate-1,5-14C, pyruvate-1-14C and pyruvate-2-14C into various lipid fractions and 14CO2 during in vitro incubation of liver slices.The total radioactivity of liver lipid per 100 g of the body and the incorporation of each substrate into triglyceride in the lipid were significantly higher in the imbalance group than the control group. Conversion of each substrate to 14CO2 was not imparied in the imbalance group.It is evident from these results that the induction of this type of fatty liver is due mainly to the triglyceride synthesis by both the fatty acid synthesis and the transesterification of fatty acid.These results are considered to support the previous assumption in which acetate-1-14C was used as a precursor.

Proceedings ArticleDOI
01 Oct 1974
TL;DR: In this paper, nonuniformity in insulating paper has drawn particular interest as an indispensable factor in order to clarify the dielectric breakdown mechanism in oil-impregnated paper.
Abstract: Nonuniformity in insulating paper has drawn our particular interest as an indispensable factor in order to clarify the dielectric breakdown mechanism in oil-impregnated paper.