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EFFECT OF AGE ON THE LEVEL OF SERUM ALKALINE PHOSPHATASE ACTIVITY OF JAPANESE BLACK STEERS
Sekine, J.,Udagawa, K.,Morita, Z.,Oura, R. Asian Australasian Association of Animal Productio 1989 Animal Bioscience Vol.2 No.2
The level of serum alkaline phosphatase activity was determined in 7 Japanese Black steers at different ages. The isoenzyme activity of non-bone origin was estimated using a heat-inactivation technique. The activity of serum alkaline phosphatase (SALP, K-A unit) decreased as age (AGE, mo.) increased: SALP = 14.15 - 0.17 (${\pm}\;0.03$) AGE, r = -0.81, P<0.01, $S.E.\;{\pm}\;0.28$. The variation of the activity was greater in younger age than the older. The temperature of $58^{\circ}C$ for the treatment of heat inactivation of bovine serum appeared to be suitable. The percentage of heat inactivated enzyme activity negatively correlated with age and positively with the level of serum alkaline phosphatase activity. The activity of SALP of non-bone origin was inferred to stay at about constant level irrespective of age and that of bone origin decreased with age.
New Defect Control for Extremely Long-Lived Widegap-White Light Emitting Diodes
K. Ando,Y. Hashimoto,K. Kanzaki,S. Ohashi,Y. Morita,T. Abe,H. Kasada,M. Adachi 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5
A new current pulse-width control for long-lived ZnSe-white LEDs is presented. Using the defect controlling technique together with high quality ZnSe white LED, it is proved that bright ZnSe white LEDs have exhibited long device life-time exceeding 20000 hrs for its in practical use. It is also evidenced that the present current pulse-width control is not limited in the ZnSe system, but very effective for other widegap semiconductor bright and long-live light emitting devices of GaN and ZnO.
Morita, Makiko,Yin, Guang,Yoshimitsu, Shin-Ichiro,Ohnaka, Keizo,Toyomura, Kengo,Kono, Suminori,Ueki, Takashi,Tanaka, Masao,Kakeji, Yoshihiro,Maehara, Yoshihiko,Okamura, Takeshi,Ikejiri, Koji,Futami, K Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.11
One-carbon metabolism plays an important role in colorectal carcinogenesis. Meta-analyses have suggested protective associations of folate and vitamin $B_6$ intakes with colorectal cancer primarily based on studies in Caucasians, and genetic polymorphisms pertaining to the folate metabolism have been a matter of interest. Less investigated are the roles of methionine synthase (MTR) and thymidylate synthetase (TS) polymorphisms in colorectal carcinogenesis. In a study of 816 cases and 815 community controls in Japan, we investigated associations of dietary intakes of folate, methionine, vitamin $B_2$, vitamin $B_6$, and vitamin $B_{12}$ with colorectal cancer risk. The associations with MTR 2756A>G, MTRR 66A>G, and TSER repeat polymorphism were examined in 685 cases and 778 controls. Methionine and vitamin $B_{12}$ intakes were inversely associated with colorectal cancer risk, but the associations were totally confounded by dietary calcium and n-3 fatty acids. The other nutrients showed no association with the risk even without adjustment for calcium and n-3 fatty acids. The TSER 2R allele was dose-dependently associated with an increased risk. The MTR and MTRR polymorphisms were unrelated to colorectal cancer risk. There was no measurable gene-gene or gene-nutrient interaction, but increased risk associated with the TSER 2R allele seemed to be confined to individuals with high folate status. This study does not support protective associations for folate and vitamin $B_6$. The TSER 2R allele may confer an increased risk of colorectal cancer. The role of the TSER polymorphism in colorectal carcinogenesis may differ by ethnicity.
Characteristics of Beam Attenuation in the High Temperature Plasma with High-Z Discharge in LHD
katsunori Ikeda,K. Tsumori,K. Nagaoka,M. Osakabe,O. Kaneko,S. Morita,Y. Oka,Y. Takeiri 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
Behavior in attenuation of a high-energy neutral beam has been investigated by visible spectroscopy in the Large Helical Device (LHD). The measurement system consists of optical fibers, a spectrometer and an ICCD detector. A spectrum of beam emission is clearly observed by the Doppler effect. In order to increase the ion-heating power, we have adopted a high-Z discharge with argon gas. An ion temperature of 13.5 keV ± 2 keV is achieved by the injection of a neutral beam power of 10.5 MW. We have observed the behavior of the neutral beam emission in the high-temperature plasma. The intensity of the beam emission in the argon discharge is lower than that in the hydrogen discharge when the ion temperature increases. After the maximum ion temperature, the intensity of the beam emission increases as the electron density increases. This behavior is similar to the hydrogen discharge. It is indicated that the particle configuration of the plasma has changed. This result will contribute to the monitoring of the neutral beam absorption in fusion plasma.
N.Kishi,K.Morita 한국물리학회 2003 Current Applied Physics Vol.3 No.1
The composition and atomic arrangement of the Si(111)-3p.3p-Sb surface have been studied by means of co-axial impactcollision ion scattering spectroscopy combined with low energy electron diraction, Auger electron spectroscopy and Rutherfordbackscattering spectrometry techniques. It is found that the Sb/Si(11) surface forms the3p.3pstructure at a coverage of 0.90ML, which is determined by RBS. The azimuthal angle scan is also found to show prominent focussing peaks at. 12. around the(112) planes at a polar angle of 13.$ . . . 6 . 0 . . . . 3p.3p-Sb surface forms thetrimer centered at the T4 site and the spacing of SbSb in the trimer is 2:8 . 0:05 .AA.. 2002 Elsevier Science B.V. All rights reserved.
Kim, B.N.,Hiraga, K.,Morita, K.,Yoshida, H.,Sakka, Y.,Park, Y.J. Elsevier Science 2013 ACTA MATERIALIA Vol.61 No.18
A grain-boundary sliding model is developed to characterize the shrinkage behavior of pores in the intermediate stage of sintering under compressive hydrostatic pressure. From an analysis of the relative sliding between grains, the bulk viscosity, densification rate and the shrinkage rate of pores are predicted for a dense matrix polycrystal containing spherical pores. Comparison with a continuum model shows that whereas the densification behavior in the present discrete model approaches the prediction of the continuum model for large pores, the occurrence of grain-boundary sliding is limited and the deviation from the continuum model increases significantly for small pores. It is also shown that the grain-size dependence of the densification rate observed experimentally is consistent with the model prediction and verifies the validity of the present model in the intermediate sintering stage.