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Sechman, A.,Shimada, K.,Saito, N.,Ieda, T.,Ono, T. Asian Australasian Association of Animal Productio 1996 Animal Bioscience Vol.9 No.1
The present study was conducted to investigate the role of thyroid hormones in the regulation of gene expression of calbindin-$D_{28k}$ (CaBP-D28K) in the chicken. By employing slot blot and RIA analyses, levels of CABP-D28K mRNA and CaBP-D28K protein in the intestine, kidney, cerebellum and liver were measured 6 and 12 h after i.m. injection of 1, 25-dihydroxyvitamin $D_3$ [1, 25 $(OH)_2D_3$; 250 ng/chick] and 3, 5, 3'-triiodothyronine ($T_3$; 500 ng/chick) in one-day-old chicks. The abundant messages of CaBP-D28K mRNA were detected in the intestine, kidney and cerebellum while there was little message in the liver. After 1, 25 $(OH)_2D_3$ treatment (6 + 12 hours), levels of CaBP-D28K mRNA increased in the intestine, but there was no change in the mRNA levels in the kidney and cerebellum. Although $T_3$ alone had no effect on CaBP-D28K mRNA levels, simultaneous administration of $T_3$ enhanced the 1, 25 $(OH)_2D_3$ effect of levels of CaBP-D28K mRNA in the intestine both 6 and 12 h post-treatment, and in the kidney 12 h post-treatment. At a protein level, co-treatment with 1, 25 $(OH)_2D_3$ and $T_3$ elicited a significant increase in CaBP-D28K expression in the intestine 12 h post-treatment, as compared to treatment with only 1, 25 $(OH)_2D_3$, whereas no differences were observed in the CaBP-D28K protein levels in the kidney and cerebellum. These results suggest that thyroid hormones may play a synergistic role with 1, 25 $(OH)_2D_3$ for CaBP-D28K gene expression in the intestine and kidney in chicks.
THE SPIN REORIENTATION AND THE MAGNETIC ANISOTROPY IN R₂Fe17-xMxCy (R=Er, Tm, M=Al, Ga)
K.Ohno,T.Urakabe,M.Agata,T.Saito,K.Shinagawa,T.Tsushima 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.5
In order to consider the change of the magnetic anisotropy energy by the Al or Ga substitution for Fe, spin reorientation temperature T_(SR) and Curie temperature Tc in R₂Fe_(17-x)Mx, (R=Er, Tm, M=Al, Ga) have been studied both experimentally and theoretically. As a result, T_(SR) and Tc for R₂Fe_(17-x)Al_x, shift toward higher temperature side with x (0≤x≤2.0). The ΔTc, the difference of the Tc's between Er₂Fe_(17-x)Al_x, and Tm₂Fe_(17-x)Al_x, is always about 10 K independent of Al-content. But in the case of Ga substitution, the ΔTc increases with Ga-content ; especially, the ΔTc for x=2.0 is 43 K. This value of the ΔTc is not explained by only the difference of the de Gennes fator G between Er³+ and Tm³+, but it is thought that the values of J_(ErFe) and J_(TmFe) themselves are not equal. (J_(AB): the exchange interaction between A and B.)
Measurement of theB¯→Xsγbranching fraction with a sum of exclusive decays
Saito, T.,Ishikawa, A.,Yamamoto, H.,Abdesselam, A.,Adachi, I.,Aihara, H.,Al Said, S.,Arinstein, K.,Asner, D. M.,Aushev, T.,Ayad, R.,Bakich, A. M.,Bansal, V.,Bhuyan, B.,Bobrov, A.,Bondar, A.,Bonvicini, American Physical Society 2015 PHYSICAL REVIEW D - Vol.91 No.5
Effect of Liquid Properties on Atomization Characteristics of Liquid Jet across Sheet-Like Air Flow
( T. Yamaguchi ),( T. Okabe ),( M. Shirota ),( T. Inamura ),( M. Daikoku ),( T. Soma ),( Y. Saito ),( Y. Matsushita ),( H. Aoki ),( J. Fukuno ) 한국액체미립화학회 2017 한국액체미립화학회 학술강연회 논문집 Vol.2017 No.-
A rotary bell-cup atomizer is widely used in the automotive spray painting. The characteristics of this painting is known as high quality finish, high coating efficiency and relatively homogeneous droplet production. The atomizer causes the ligament breakup by the shaping air blowing from the rear of the bell cup. The shaping air carries the generated droplets to the target. In the industrial painting, many paints of different physical properties are used. However, few studies have focused on the effects of physical properties of paint on the atomization characteristics such as the spray angle and the droplet trajectory. The objective of this study is to experimentally clarify the effect of the physical properties of paint on the atomization characteristics. In the experiment, liquid jet (assuming the ligament of paint) was broken up by sheet-like air flow. The experimental conditions such as the air velocity, the liquid density, viscosity and surface tension were varied. The droplet diameter and velocity were quantitatively measured by Particle Tracking Velocimetry (PTV) using double-pulsed Nd: YAG laser with a diffuser as a back light. The breakup point of the liquid jet was measured by image processing method. The experimental results showed that the decrease of surface tension and viscosity produces the finer droplets that are easily carried by the air flow, which results in the increases in the spray angle. This is because the decrease of restoring force and viscous damping due to the decrease of surface tension and liquid viscosity, respectively, promotes the deformation of liquid column, and increases the occurrence frequency of a bag-shaped breakup. We also revealed that the liquid viscosity and surface tension affect droplet trajectory and the range of spray angle.
Namioka, T.,Saito, A.,Inoue, Y.,Park, Y.,Min, T.j.,Roh, S.a.,Yoshikawa, K. Applied Science Publishers 2011 APPLIED ENERGY Vol.88 No.6
Operating conditions for low-temperature pyrolysis and steam reforming of plastics over a ruthenium catalyst were investigated. In the range studied, the highest gas and lowest coke fractions for polystyrene (PS) with a 60gh<SUP>-1</SUP> scale, continuous-feed, two-stage gasifier were obtained with a pyrolyzer temperature of 673K, steam reforming temperature of 903K, and weight hourly space velocity (WHSV) of 0.10g-sample g-catalyst<SUP>-1</SUP>h<SUP>-1</SUP>. These operating conditions are consistent with optimum conditions reported previously for polypropylene. Our results indicate that at around 903K, the activity of the ruthenium catalyst was high enough to minimize the difference between the rates of the steam reforming reactions of the pyrolysates from polystyrene and polypropylene. The proposed system thus has the flexibility to compensate for differences in chemical structures of municipal waste plastics. In addition, the steam reforming temperature was about 200K lower than the temperature used in a conventional Ni-catalyzed process for the production of hydrogen. Low-temperature steam reforming allows for lower thermal input to the steam reformer, which results in an increase in thermal efficiency in the proposed process employing a Ru catalyst. Because low-temperature steam reforming can be also expected to reduce thermal degradation rates of the catalyst, the pyrolysis-steam reforming process with a Ru catalyst has the potential for use in small-scale production of hydrogen-rich gas from waste plastics that can be used for power generation.
EFFECTS OF OZONATION AND CHLORINATION ON VIABILITY AND INFECTIVITY OF CRYPTOSPORIDIUM PARVUM OOCYSTS
Hirata, T.,Chikuma, D.,Shimura, A.,Hashimoto, A.,Motoyama, N.,Takahashi, K.,Moniwa,T.,Kaneko, M.,Saito, S.,Maede, S. 嶺南大學校 環境問題硏究所 1999 環境硏究 Vol.19 No.1
ABSTRACT Experimental studies on ozonation and chlorination were conducted to determine capacity for inactivating Cryptosporidium parvum oocysts in batch modes at pH 7, 20℃. In both experiments, the log reduction of animal infectivity was linear and clearly decreased as disinfectant CT product increased. However, the curve of reduction in viability determined by both in vitro excystation assay and DAPI/PI permeability assay exhibited a shoulder. The CT products of ozone per 1 log reduction in infectivity were 3 mg·min/L for 0.5 mg/L and 1.5mg·min/L for 0.3 mg/L, while viability determined by in vitro excystation was reduced by only 0.2 logs for the CT product of 3 mg·min/L. In the chlorination experiment, the reduction of animal infectiviry was up to 3 logs for the CT product of 2,700 mg·min/L, while reduction of viability was smaller at 0.16 logs in in vitro excystation and 0.04 logs in DAPI/PI permeability (in PI exclusion)for the same CT product. The CT product of free chlorine per 1 log reduction in infectivity was estimated to be in the range of 800 to 900 mg·min/L Experimental studies on ozonation and chlorination were conducted to determine capacity for inactivating Cryptosporidium parvum oocysts in batch modes at pH 7, 20℃. In both experiments, the log reduction of animal infectivity was linear and clearly decreased as disinfectant CT product increased. However, the curve of reduction in viability determined by both in vitro excystation assay and DAPI/PI permeability assay exhibited a shoulder. The CT products of ozone per 1 log reduction in infectivity were 3 mg·min/L for 0.5 mg/L and 1.5 mg·min/L for 0.3 mg/L, while viability determined by in vitro excystation was reduced by only 0.2 logs far the CT product of 3 mg·min/L. In the chlorination experiment, the reduction of animal infectivity was up to 3 logs for the CT product of 2,700 mg·min/L, while reduction of viability was smaller at 0.16 logs in in vitro excystation and 0.04 logs in DAPI/PI permeability (in PI exclusion) far the same CT product. The CT product of free chlorine per 1 log reduction in infectivity was estimated to be in the range of 800 to 900 mg·min/L.
Fine Impedance Matching by Use of Liquid Stub Tuners in ICRF Experiment on LHD
kenji Saito,C. Takahashi,H. Takeuchi,J. G. Kwak,J. S. Yoon,M. Yokota,R. Kumazawa,T. Seki,T. Mutoh,Y. P. Zhao 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
An impedance-matching system with liquid stub tuners was developed for high-power, long-pulse ICRF injection in LHD. In order to predict the optimum liquid heights, a loading resistance and an effective length were calculated. We used a complex reflection coefficient measured at a directional coupler attached to the outlet of an oscillator. The effective length changed, as well as the loading resistance, when the plasma condition was changed. Moreover, the effective length changed during long-pulse ICRF injection. By using the loading resistance and the effective length, the liquid heights for impedance matching were calculated and the reflected power was reduced in discharges having similar plasma parameters. Application of this method to real-time feedback control for long-pulse discharges is now being prepared.