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Katsuhiro Hayashi,Tetsutaro Yahata,Ryota Muramoto,Norio Yamamoto,Akihiko Takeuchi,Shinji Miwa,Takashi Higuchi,Kensaku Abe,Yuta Taniguchi,Hisaki Aiba,Yoshihiro Araki,Hiroyuki Tsuchiya 대한재활의학회 2018 Annals of Rehabilitation Medicine Vol.42 No.3
Objective To analyze patient characteristics of cancer rehabilitation and outcomes at our hospital.Methods This retrospective study analyzed 580 patients, who underwent cancer rehabilitation at our hospital and rehabilitation outcome after therapy were investigated. The relationship between the initial Barthel index and discharge outcomes was investigated, with a special focus on cancer patients with bone metastasis. The Barthel index and performance status (Eastern Cooperative Oncology Group) before and after rehabilitation were analyzed, and threshold value of home discharge was calculated from a receiver operating characteristic curve (ROC). General criteria for home discharge from our hospital included independence in performing basic activities of daily living such as bathing, feeding, and toileting or availability of home support from a family member/caregiver.Results The outcomes after rehabilitation among all the patients were as follows: discharge home 59%, death 13%, and others 27%. Statistical differences were observed between the initial and final values of the Barthel index in patients with bone metastasis, who could be discharged home (p=0.012). ROC analysis of the initial Barthel index for predicting home discharge revealed a threshold value of 60, sensitivity of 0.76, and specificity of 0.72.Conclusion The patients with bone metastasis had a lower rate of home discharge and a higher rate of mortality than all the study patients who underwent cancer rehabilitation at our hospital. It is proposed that at the time of initiation of rehabilitation for patients with bone metastasis, an initial Barthel index lower than 60 might predict a worse outcome than home discharge.
Efficiency and stability of an open sky network
Katsuhiro Yamaguchi,Masashi Yamamoto,Yuichiro Yoshida 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.8
North America, Europe, and Asia are three largest regional blocks in the global aviation. EU has liberalized its aviation market within the region, following the north America. However, Asia is still left behind, and most of the markets in the region are still governed by bilateral air service agreements. This paper shows that, any pair of countries with an exclusive bilateral air-service agreement has no incentive to open their market to the third country; and yet that a comprehensive multilateral air service agreement within the entire region improves the welfare of all countries in the region.
Lee, Eun-Jung,Kim, Yun-Ji,Lee, Nam-Hyouck,Hong, Seok-In,Yamamoto, Katsuhiro John Wiley Sons, Ltd. 2007 Journal of the Science of Food and Agriculture Vol.87 No.1
<P>Hydrostatic pressure (HP) and heat treatments of myofibrillar proteins have both been shown to induce protein denaturation, but different gel formation properties result from these treatments. To characterise differences in the properties of proteins resulting from HP or heat treatment, Ca- and Mg-ATPase activities (ATP, adenosine triphosphate) and protein solubility in 0.1 and 0.6 mol L<SUP>−1</SUP> KCl buffers (pH 7) were evaluated in this study. The inactivation rate of Ca-ATPase of myofibrillar proteins (Mf) induced by HP was slower than that of Mg-ATPase at each of the tested pressures. However, the inactivation rate of Ca-ATPase induced by heating was faster than that of Mg-ATPase at each of the tested temperatures. The level of soluble proteins in Mf suspension induced by HP in 0.1 mol L<SUP>−1</SUP> KCl buffer increased with increasing pressure up to 400 MPa and then decreased slightly at 500 MPa. However, the level of soluble proteins in Mf suspension induced by heat treatment in 0.1 mol L<SUP>−1</SUP> KCl buffer increased with increasing temperature up to 55°C. According to the results of sodium dodecyl sulfate polyacrylamide gel electrophoresis, the levels of soluble myosin heavy chain and actin in Mf suspension induced by HP in 0.6 mol L<SUP>−1</SUP> KCl buffer decreased simultaneously at pressures higher than 300 MPa. The level of soluble MHC in 0.6 mol L<SUP>−1</SUP> KCl buffer decreased gradually with increasing temperature, but there were no changes in the level of soluble actin in 0.6 mol L<SUP>−1</SUP> KCl buffer with increasing temperature up to 50°C. These results showed that the mechanism of HP-induced protein denaturation was different from the mechanism underlying heat-induced protein denaturation. Copyright © 2006 Society of Chemical Industry</P>
Effects of Hydrostatic Pressure on Myofibrillar Protein Extracted from Bovine Semitendinosus
Lee. Eun-Jung,Kim. Yun-Ji,Lee. Nam-Hyouck,Yamamoto. Katsuhiro 한국축산식품학회 2004 심포지움 및 학술발표회 Vol.- No.33
To investigate hydrostatic pressure (HP) effect on myofibrillar protein (Mf) extracted from bovine Semitendinosus muscle, Ca- and Mg-ATPase activities to evaluate denaturation of myosin and actin, and soluble protein contents were observed. In Mf treated with 100 MPa for 5 min was not observed denaturation of myosin and actin. In Mf treated with 200 MPa for 5 min, denaturation of myosin and actin were observed but inactivation rate was low (0.0136 min〈sup〉-1〈/sup〉 ). Inactivation rate of myosin and actin was dramatically increased above 300 MPa treatment. However denaturation of myosin and actin was not that critical with duration time. By increasing pressure size, the amount of myosin and actin in soluble protein eluted in 20 mM potassium phosphate buffer (pH 7.0) containing 0.6 M NaCl were decreased. SDS-PAGE of soluble protein released from Mf suspension in 0.1 M NaCl buffer (pH 7.0) showed that low molecular weight proteins (15~ 36 KDa) were released by HP treatment above 200 MPa. From the results, denaturation of myosin and actin, and release of light molecule proteins of Mf were observed by HP treatment over 200 MPa.
Mitsuru UESAKA,Atsushi FUKASAWA,Fumito SAKAMOTO,Haruyuki OGINO,Junji URAKAWA,Katsuhiro DOBASHI,Kazutaka TAKAO,Mitsuo AKEMOTO,Tomohiko YAMAMOTO,Toshinobu MIYOSHI,Toshiyasu HIGO 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.1
A Compton scattering X-ray source consisting of an X-band (11.424 GHz) electron linear accelerator (linac) and Q-switched Nd:YAG laser is currently under construction. Monochromatic hard X-rays are required for a variety of medical and biological applications. The new hard X-ray source produces monochromatic X-rays via collision between a 35-MeV multi-bunch (104 bunches in a 1 μs RF pulse) electron beam and 1.4 J/10 ns (532 nm) Nd:YAG laser beam. The linac uses an X-band 3.5-cell thermionic cathode RF gun and an alpha magnet as an injector. The thermionic cathode RF gun is the first of its kind and can generate a high current (2 μA) and a multi-bunch 2-MeV electron beam. To increase the efficiency of the X-ray yield, a laser pulse circulation system is adopted, that can increase the X-ray intensity by up to 50 times. This scheme can produce monochromatic tunable X-rays (10 40 keV) with intensities of 108 109 photons/sec. In addition, the X-ray energy can be changed rapidly over 40 ms by two different wavelength lasers (YAG fundamental (1064 nm), 2nd harmonic (532 nm)) and an optical switch. This quick energy change is very important for living specimens and is very difficult to achieve in light sources such as a large SR (Synchrotron Radiation) source. The system can be used for dual-energy X-ray CT and subtraction X-ray CT to determine the 3D distribution of the atomic number density and electron density, and specified atomic distribution, respectively. In this paper, we describe the details of the system, report on experiments on the X-band thermionic cathode RF gun, and discuss applications of monochromatic X-rays.?
이은정,오세욱,Nam-Hyouck Lee,Young-Ho Kim,이동언,Katsuhiro Yamamoto,김윤지 한국축산식품학회 2009 한국축산식품학회지 Vol.29 No.3
In order to reduce the increased hardness of beef bulgogi due to hydrostatic pressure (HP), kiwifruit (Actinidia chinensis) was applied. To understand the changes of shear force in beef bulgogi with kiwifruit induced by HP, changes in chemical properties of myofibril (Mf) with 10% kiwifruit induced by HP were investigated. From the SDS-PAGE patterns of Mf with 10% kiwifruit, there was an observed increase in the degradation of myosin heavy chain (MHC) by HP (300-500 MPa) to that by 0.1 MPa. This result indicates that HP may enhance enzyme action from a kiwifruit for the degradation of MHC, and the similar phenomenon occurred in the beef bulgogi with kiwifruit induced by HP. The shear force of beef bulgogi without a kiwifruit induced by 400 and 500 MPa significantly increased compared to that by 0.1 MPa (p<0.05). However, in the beef bulgogi with 10% or 20% kiwifruit, the shear force induced by 400 or 500 MPa was similar or slightly lower than that by 0.1 MPa. Consequently, adding kiwifruit to bulgogi could reduce the hardness of HP-induced beef bulgogi due to the enzyme action in the kiwifruit accelerated by HP.