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SENDA, Tetsuya ; TAKAHASHl, Chiori ; UEMATSU, Susumu ; AMADA, Shigeyasu
概要:
application/pdf<br />Journal Article<br />The frictional behavior of alumina ceramics was investigated at various temper
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atures up to 1200℃. The coefficient of friction decreased with increasing temperature and this dependence became more pronounced as higher contact pressure was applled. Wear loss at room temperature could be interpreted as beingcaused by one of two different behavior modes which have a rate difference of anorder of magnitude. At temperatures higher than 800℃, the wear loss was far less than that at lower temperatures and a smooth, flat friction surface, which is probably responsible for both the low friction coefficient and the small wear loss, was observed.
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| 2.
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TABEI, Katsu'ine ; SHIRAI, Hiroyuki ; TAKAKUSAGI, Fumio
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application/pdf<br />Journal Article<br />Using the moire-schlieren method for symmetric and asymmetric flow fields, density distributions of underexpanded free jets of air from circular and square nozzles have been measured.
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Experimental moire image data of the flows, which show integrated light deflection across the flow, were converted to an internal density distribution by the numerical inverting method. The experiment was performed systematically by changing the pressure ratio across the nozzles from 4 to 13. It was found that the density profiles measured in the expanded free jets from a circular nozzle agreed well with other experimental results, and that those for a square nozzle were much more complex than for a circular nozzle. In spite of the large difference in such profiles, the density variations along the flow axis for both nozzles were very similar to each other.
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| 3.
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Saito, Atsuko
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application/pdf<br />Departmental Bulletin Paper<br />Twenty college students were collected on campus In U.S.A.; Ten students were non-smokers and another ten students were smokers. The effectiveness of biofeedback training (hand
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warming training) with autogenic phrases was compared between non-smokers and smokers in measuring blood pressure, muscle tension, and finger temperature. And also these variables were compared after training and smoking in the smoking group. Fifteen minutes hand warming training was used as a treatment. The training took 30 minutes for non-smokers and fifty minutes for smokers. Smokers smoked a single cigarette after the training, and blood pressure, muscle tension, and finger temperature were observed. In the comparison of blood pressure and muscle tension between non-smokers and smokers, there was no significant difference. But finger temperature was higher in nonsmokers than smokers after the training (t=3.954, .001 significance level). Within smoking group, blood pressure was not significantly changed, but muscle tension (t=2.671 and .05 significance level) and finger temperature (t=3.713, .01 significance level) were observed significant effects after smoking. The smokers seemed to become more relaxed after smoking that resulted in increased finger temperature and decreased muscle tension. According to Finnerty and Linde, smoking tend to lower blood pressure for certain people because they reduce stress by smoking. In this study, there was not significant reduction in blood pressure in the smoking group, but all smokers lowered either systolic or diastolic blood pressure in some degree after they smoked.
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Tomaru, Tadashi
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application/pdf<br />Departmental Bulletin Paper<br />In present paper we consider the weight of 2-dimensional quasihomogeneous hypersurface singularities which are resolved by a smooth algebraic curve. Further we consider the
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structures of the graded affine rings associated with those singularities.
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Takezawa, Sanzo
概要:
application/pdf<br />Departmental Bulletin Paper<br />The absorption bands of H_2, B"-X(4,0), D"-X(2,0) and 7pπ -X(1,0),
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observed around about 803 A, are investigated by using the high resolution spectrum with the reciprocal dispersion 0.6cm-1. This wavelength region is corresponding to the first ionization energy of H_2. Its spectrum are fairly complicate, because of overlapping or masking with many Rydberg bands, of which belong to high members of npσ -X and npπ -X. In this work, the previous line assignments of these bands are examined in detail and are partly modified under the assumption of the perturbation between 7pπ -X(v=1) and 5pπ D"(v=1) bands. The previously observed photoionization peak near the R(0) line of B"-X(4,0) band, 124 354.8cm^<-1> has been 2.7cm^<-1> less to be assigned as the Q(1) line of 7pπ -X(1,0); the J=1 level, 124 473.3cm^<-1>, is below the autoionizing level, 124 476.0cm^<-1> (H_a^+, v=0, J=1). In absorption the R(0) line of B"-X is just superimposed by the Q(1) line of 7pπ -X(1,0) band. This problem is interpreted by consideration of the rotational perturbation. For persuasive interpretation of this localized perturbation, the reliable energy levels and electronic potential curves are essential. The R-K-R potentials require the precise molecular constants for the construction. The rotational and vibrational constants of the three states are evaluated and discussed in this work.
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| 6.
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Uemiya, Hideyuki
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application/pdf<br />Departmental Bulletin Paper<br />Formation of the central nervous system is described. Protocerebrum consists of three pairs of ganglia (Lobes 1-3). Deutocerebrum is derived from the antennal, and the tritocerebrum
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from the intercalary ganglia. The lobe 3 of the protocerebrum is regarded as the ganglion of the preantennal segment. The tritocerebrum retains the original postoral position throughout the life cycle. The ventral nerve cord consists of ten pairs of ganglia deriving from the mandibular to the fourth abdominal segments. The metathoracic and four abdominal ganglia fuse to form a synganglion during embryogenesis.
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Sato, Kumiko ; Yamaguchi, Haruyasu ; Kano, Shigeyuki ; Suzuki, Mamoru
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application/pdf<br />Departmental Bulletin Paper<br />The authors developed a new practical method for the measurement of malaria antibodies which met the requirements needed for large-scale malaria assessment in the tropics. The new
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method, ABC-ELISA has used the avidin biotin peroxidase complex system for the amplification of the ordinary ELISA substrate reactions in malaria serological tests. The ABC-ELISA was more sensitive than the ordinary ELISA through the use of the ABC system. This allowed the resulting color spots on the dried plate wells to be read clearly with the naked eye. The method was able to differentiate well malaria patients with recent past history from subjects. The sera from malaria patients were examined using three kinds of sero-immunological methods: ABC-ELISA, fluorescence enzyme linked immunosorbent assay (fluorescence-ELISA), and indirect fluorescent antibody technique (IFAT). An excellent correlation between the ABC-ELISA and IFAT titers was obtained; a correlation coefficient being 0.923. ABC-ELISA titers also correlated well with fluorescence-ELISA titers; the correlation coefficient being 0.962. The lyophilization of the malaria antigen preserved the antigen activity without inducing any nonspecific reaction. These results suggest that the ABC-ELISA is useful for assessing malaria survey in tropical endemic areas, because the test can be carried out without using major electrical equipment.
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Ito, Yoshikazu Z. ; Futawatari, Tamae ; Arai, Michiko
概要:
application/pdf<br />Departmental Bulletin Paper<br />The synthesis of protein by the prostate of immature rats cultured
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in Nutrient mixture Ham F10, was strongly inhibited by high concentrations (10^<-4>M) of testosterone. At concentrations between 10^<-6>M to 10^<-8>M, androgens increased the synthesis of protein. There was a noticeable increase of protein synthesis as measured by the incorporation of labeled leucine into the protein fraction of the organ, with the addition of 5α androstane-3 α, 17β -diol to the organ culture.
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Shihara, Yasufumi ; Kitani, Yasuharu ; Takahashi, Shigeru ; Miyamoto, Masanori ; Ohnishi, Naoki ; Kodama, Masahisa
概要:
application/pdf<br />Departmental Bulletin Paper<br />Skin potential activities (SPA) were used to assess the degree of sympathetic blockade after stellate ganglion block (SGB). The SPA were recorded bilaterally from the palmar thenar
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eminences in four outpatients before and after SGB. Before the SGB, the skin potential responses (SPR) on both sides were synchronous and their amplitudes were almost the same. After SGB, the SPR amplitude on the blocked side gradually fell from 1-2 minutes. Before SGB, the skin potential levels (SPL) on both sides were parallel and the lateral difference was constant. About 1-2 minutes after SGB, the SPL on the blocked side began to fall and then reached a stationary level 5 minutes after SGB. SPA variations due to factors other than peripheral blockade can be cancelled by bilateral recording. Thus, the net SPL decrease on the blocked side compared with that on the non-blocked side was proved to be a useful index for continuous, quantitative monitoring of the sympathetic blockade by the SGB.
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