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Katayama, K.,Fuchu, H.,Sakata, A.,Kawahara, S.,Yamauchi, K.,Kawamura, Y.,Muguruma, M. Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.3
Inhibitory activities against angiotensin I-converting enzyme (ACE) of enzymatic hydrolysates of porcine skeletal muscle proteins were investigated. Myosin B, myosin, actin, tropomyosin, troponin and water-soluble proteins extracted from pork loin were digested by eight kinds of proteases, including pepsin, $\alpha$-chymotrypsin, and trypsin. After digestion, hydrolysates produced from all proteins showed ACE inhibitory activities, and the peptic hydrolysate showed the strongest activity. In the case of myosin B, the molar concentration of peptic hydrolysate required to inhibit 50% of the activity increased gradually as digestion proceeded. The hydrolysates produced by sequential digestion with pepsin and $\alpha$-chymotrypsin, pepsin and trypsin or pepsin and pancreatin showed weaker activities than those by pepsin alone, suggesting that ACE inhibitory peptides from peptic digestion might lose their active sequences after digestion by the second protease. However, the hydrolysates produced by sequential digestion showed stronger activities than those by $\alpha$-chymotrypsin, trypsin or pancreatin alone. These results suggested that the hydrolysates of porcine meat were able to show ACE inhibitory activity, even if they were digested in vivo, and that pork might be a useful source of physiologically functional factors.
Katayama, K.,Chin, K.B.,Yoshihara, S.,Muguruma, M. Asian Australasian Association of Animal Productio 2006 Animal Bioscience Vol.19 No.1
Microbial transglutaminase (MTGase) was investigated to determine whether it was an effective binding agent for the processing of low-quality pork loins. MTGase especially promoted the coagulation of myosin heavy chain (MHC). However, the effect of MTGase on MHC from low-quality meat was less than that from the normal meat when the reaction time was not enough. The breaking strength of the heat-induced gel made of myosin B from low-quality meat with MTGase was lower than that of normal meat. Sausage made with low-quality meat with MTGase did not exhibit improved hardness, as compared to that made with normal meat. Results of this study indicated that use of low-quality meat in the manufacture of sausage was feasible to get textural property equal to that of normal meat sausage, when a half or more of the raw material was normal meat and MTGase was used in the sausage.
Phthalate Levels in Beverages in Japan and Korea
Yano, K.,Hirosawa, N.,Sakamoto, Y.,Katayama, H.,Moriguchi, T.,Joung, K. E.,Sheen, Y. Y.,Asaoka, K. 梨花女子大學校 藥學硏究所 2002 藥學硏究論文集 Vol.- No.11
Considerable number of endocrine disruptors (7 compounds) are known today (Japan Environmental Agency, 1998). Among them, phthalates are considered to be in most abundance in our environment. The production of phthalates in Japan was 474 thousand tones in 1998 (Kasozai Kogyo Kai, 1999), around 56% of which was di(2-ethylhexyl)phthalate (DEHP) uesd mainly as plasticizers in polyvinyl chloride (PVC) production, is widely used in PVC, nitrocellulose polyvinyl acetate, painting inks, adhesives and lacquers. PVC contains up to 40% phthalates by weight wuthout covalently binding to other ingredients in the PVC(Needham et al., 2000). Thus, significant amounts of DEHP and DBP are easily released from the plastics into the environment during production, used and disposal, resulting in the pollution of food air, water, soil and homes.
Suzuki, T.,Bhang, H.,Franklin, G.,Gomikawa, K.,Hayano, R.S.,Hayashi, T.,Ishikawa, K.,Ishimoto, S.,Itahashi, K.,Iwasaki, M.,Katayama, T.,Kondo, Y.,Matsuda, Y.,Nakamura, T.,Okada, S.,Outa, H.,Quinn, B. Elsevier 2004 Physics letters: B Vol.597 No.3
<P><B>Abstract</B></P><P>We have measured the proton energy distribution from the <SUP>4</SUP>He(stopped <SUP>K−</SUP>,p) reaction by means of time-of-flight. A mono-energetic peak was observed, which is interpreted as the formation of a new kind of neutral tribaryon S<SUP>0</SUP>(3115) with isospin T=1 and strangeness S=−1. The mass and width of the state were deduced to be 3117.0−4.4+1.5MeV/<SUP>c2</SUP> and <21MeV/<SUP>c2</SUP>, respectively. The state mainly decays into ΣNN.</P>
Progress in R&D of coated conductor in M-PACC project
Izumi, T.,Ibi, A.,Nakaoka, K.,Taneda, T.,Yoshida, T.,Takagi, Y.,Nakamura, T.,Machi, T.,Katayama, K.,Sakai, N.,Yoshizumi, M.,Koizumi, T.,Kimura, K.,Kato, T.,Kiss, T.,Shiohara, Y. The Korea Institute of Applied Superconductivity a 2014 한국초전도저온공학회논문지 Vol.16 No.2
The five-year national project in Japan for R&D of coated conductors and applications, named as the Materials and Power Applications of Coated Conductors (M-PACC) project, was finished at the end of FY2013. The project consists of four sub-themes as cable, transformer, SMES and coated conductors. In the theme of coated conductors, the fabrication process had been developed to satisfy the requirements from the applications such as in-field $I_c$ performance, low AC loss in the long tapes etc. Through the project, the remarkable progress was achieved as follows; a high in-field minimum $I_c$ value over 54A/cm-width under 3T at 77K was realized in a 200m long EuBCO tape with artificial pinning centers of $BaHfO_3$ by the pulsed laser deposition (PLD) technique on the IBAD template. On the other hand, the AC loss reduction was confirmed in the tapes fabricated by both PLD and the metal organic deposition (MOD) techniques by scribing 100m tapes into 10-filamments. Additionally, the mechanism of the delamination phenomenon was systematically investigated and the strength was improved by eliminating the origins of the weak points in the films. Through the development, all targeted goals were accomplished and the several results were appreciated as a world champion data.
Computational Nano-Materials Design for II-VI Compound Semiconductor-Based Spintronics
H. Katayama-Yoshida,K. Sato,T. Fukushima,M. Toyoda,H. Kizaki,Van An Dinh,P. H. Dederichs 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.1
Based on the state-of-the-art ab-initio electronic structure calculation by using the Korringa-Kohn-Rostoker coherent-potential approximation (KKR-CPA) method with the local density approximation (LDA) and self-interaction corrected LDA (SIC-LDA) to go beyond the LDA, we propose a unified physical picture of 3d transition-metal-doped dilute-magnetic-semiconductors (DMS) in II-VI compound semiconductors, such as ZnO, ZnS, ZnSe and ZnTe. Zener's double-exchange interaction and super-exchange interaction mechanisms are competing in the magnetism of II-VI DMS. In a homogeneous system, the electronic structure calculated by using the SIC-LDA and the Curie temperature (TC) in a Monte Carlo simulation with the LDA is in good agreement with the experimental data of photoemission spectroscopy and the experimental value of TC. In a inhomogeneous system, we propose the three-dimensional Dairiseki phase and the one-dimensional Konbu phasecaused by spinodal nano-decomposition. These are responsible for the high-TC (or TB) phases in the DMS. We design the growth position and control the shape of nano-magnets by using self-organization. Based on the state-of-the-art ab-initio electronic structure calculation by using the Korringa-Kohn-Rostoker coherent-potential approximation (KKR-CPA) method with the local density approximation (LDA) and self-interaction corrected LDA (SIC-LDA) to go beyond the LDA, we propose a unified physical picture of 3d transition-metal-doped dilute-magnetic-semiconductors (DMS) in II-VI compound semiconductors, such as ZnO, ZnS, ZnSe and ZnTe. Zener's double-exchange interaction and super-exchange interaction mechanisms are competing in the magnetism of II-VI DMS. In a homogeneous system, the electronic structure calculated by using the SIC-LDA and the Curie temperature (TC) in a Monte Carlo simulation with the LDA is in good agreement with the experimental data of photoemission spectroscopy and the experimental value of TC. In a inhomogeneous system, we propose the three-dimensional Dairiseki phase and the one-dimensional Konbu phasecaused by spinodal nano-decomposition. These are responsible for the high-TC (or TB) phases in the DMS. We design the growth position and control the shape of nano-magnets by using self-organization.
Design of the Advanced Metadata Service System with AMGA for the Belle II Experiment
S. Ahn,K. Cho,S. Hwang,J. Kim,H. Jang,B. K. Kim,H. Yoon,J. Yu,Z. Drasal,T. Hara,Y. Iida,R. Itoh,G. Iwai,N. Katayama,Y. Kawai,S. Nishida,T. Sasaki,Y. Watase,R. Fruhwirth,W. Mitaroff,R. Grzymkowski,M. S 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.4
The Belle II experiment is expected to produce 50 times more data than the existing Belle experiment. Such huge data production requires not only scalability with respect to the storage service but also scalability regarding the metadata service. There has already been a metadata service at the Belle experiment, but it is not proper for the Belle II experiment because it has scalability problems and it is not intended to be used in a distributed grid environment. To deal with these issues, we designed an advanced metadata service system based on AMGA, which provides efficient and scalable metadata searching. We have built testbed sites to test the correctness, performance and scalability of the advanced metadata service system, and it has been proved to be able to provide efficient metadata searching for the Belle II experiment.