재해시 비상시스템의 기능과 정보

Katayama,Tauneo 한국화재소방학회 1990 한국화재소방학회논문지 Vol.4 No.2

재해시 비상시스템의 기능과 정보

Katayama, Tauneo 한국화재소방학회 1990 한국화재소방학회논문지 Vol.4 No.2

Bacterial degradation of thiocyanate contained in waste water from a coke-oven factory

Katayama, Yoko 嶺南大學校 環境問題硏究所 1995 環境硏究 Vol.14 No.2

Thiocyanate-assimilating bacterium, Thiobacillus thioparus, was isolated from activated sludge used for the treatment of thiocyanate contained in waste water from coke-oven factory. When grown in the presence of thiocyanate, a pure culture of T. thioparus was found to hydrolyze thiocyanate to carbonyl sulfide(COS). The maximum amount of COS detected in the head space of a sealed flask was 2.2 μmol which represented 0.2% of total thiocyanate. COS was incorporated into the cells during further incubation, and could not be detected in the head space. Activated sludge for the treatment of thiocyanate, which contained T. thioparus as a thiocyanate degrading bacterium, also showed emission followed by disappearance of COS in the head space when incubated with thiocyanate. These results provide evidence for the biogenic origin of COS which may play an important role in the formation of sulfate aerosol in the stratosphere and the greenhouse effect.

災害時 非常시스템의 機能과 情報

Katayama, Tsuneo 社團法人 韓國火災學會 1990 한국화재소방학회논문지 Vol.4 No.2

Angiotensin I-converting Enzyme Inhibitory Activities of Porcine Skeletal Muscle Proteins Following Enzyme Digestion

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.

The influence of horizontal cephalic rotation on the deviation of mandibular position

Katayama, Naoto,Koide, Kaoru,Koide, Katsuyoshi,Mizuhashi, Fumi The Korean Academy of Prosthodonitics 2018 The Journal of Advanced Prosthodontics Vol.10 No.6

PURPOSE. When performing an occlusal procedure, it is recommended that the patient should be sitting straight with the head in a natural position. An inappropriate mandibular position caused by an incorrect occlusal record registration or occlusal adjustment can result in damaged teeth and cause functional disorders in muscles and temporomandibular joints. The purpose of this study was to clarify the influence of horizontal cephalic rotation on mandibular position by investigating the three-dimensional positions of condylar and incisal points. MATERIALS AND METHODS. A three-dimensional jaw movement measurement device with six degrees of freedom (the WinJaw System) was used to measure condylar and incisal points. The subjects were asked to sit straight with the head in a natural position. The subjects were then instructed to rotate their head horizontally $0^{\circ}$, $10^{\circ}$, $20^{\circ}$, $30^{\circ}$, $40^{\circ}$, $50^{\circ}$and $60^{\circ}$ in the right or left direction. RESULTS. The results indicated that horizontal cephalic rotation made the condyle on the rotating side shift forward, downward, and toward the inside, and the condyle on the counter rotating side shift backward, upward, and toward the outside. Significant differences in deviations were found for angles of rotation higher than $20^{\circ}$. The incisal point shifted in the forward and counterrotating directions, and significant differences were found for angles of rotation higher than $20^{\circ}$. CONCLUSION. The mandibular position was altered by horizontal cephalic rotations of more than $20^{\circ}$. It is essential to consider the possibility of deviation of the mandibular position during occlusal procedures.

Hydrodynamic Forces Acting on Porpoising Craft at High-Speed

Katayama, Toru,Ikeda, Yoshiho The Society of Naval Architects of Korea 1999 Journal of ship and ocean technology Vol.3 No.2

An experimental investigation on hydrodynamic forces acting on a porpoising craft at high advanced speeds up to Froude numbers Fn=6.0(Fn=U\ulcorner:Lo\ulcorner denote overall length of ship) in calm water is performed. Captive model tests and forced motion tests are carried out to measure the hydrodynamic forces. The results show that significant nonlinear effects for motion amplitudes appear in the restoring, the added mass and the damping coefficients. The experimental results are compared with the results of a prediction method of the hydrodynamic forces include the nonlinear effects, and show a good agreement with them. A simulation using the predicted hydrodynamic forces in a nonlinear motion equation is carried out to obtain the porpoising motion of a craft in calm water. The calculated results are in fairly good agreement with experimental ones.

Immunophenotype Characterization for Swine Selected Line, Which is Resistant for the Mycoplasma Pneumonia

Katayama, Masafumi,Fukuda, Tomokazu,Okamuara, Toshihiro,Suda, Yoshihito,Suzuki, Eisaku,Uenishi, Hirohide,Suzuki, Keiichi Asian Australasian Association of Animal Productio 2011 Animal Bioscience Vol.24 No.7

Mycoplasma Pneumonia of swine (MPS) decreases the daily growth of pigs, and, co-infection with a virus sometimes causes severe pneumonia. Genetic selection of pigs resistant to the pulmonary MPS lesion might solve the economic loss due to MPS in animal production. Here, we examined the immunophenotype of Landrace line (Miyagino L2), genetically selected to reduce the incidence of pulmonary MPS lesion for 5 generations in Miyagi Prefecture Animal Industry Experiment Station. Although this line is expected to be resistant to the pulmonary MPS lesion, the biological characteristics of its immune function are not clear. We investigated details of the immunorelated phenotype of Miyagino L2 at the hematological and molecular biological level, including cytokine expression, and compared the results with that of non-genetically selected Landrace. Miyagino L2 showed decreased antigen-specific IgG and IgM production and increased CD8-positive T-cell population, and high levels of cortisol concentration, suggesting that the MPS-resistant phenotype is associated these immunological differences. Additionally, T-cell CD4 expression was highly correlated with the MPS expected breeding value. Although the detailed mechanisms underlying this high correlation remain unknown, our result suggested that the genetic selection of the expression level of CD4 might be useful to improve MPS resistance in pig production.

Revealing the Essence of Joseon Dynasty Porcelain

Katayama Mabi Curator, Museum of Oriental Ceramics, Osaka The Korea Foundation 2006 Koreana (English) Vol.20 No.4

對馬,北部九州地域と高麗陶磁

Katayama Mabi 東亞大學校附設 石堂傳統文化硏究院 2008 石堂論叢 Vol.0 No.40

일본 북부 구주 지역은 선사시대부터 한국과 밀접한 관계를 맺어왔다. 도자사적 관점으로 볼 때 11세기 중반부터 14세기 말까지 중세기에는 청자와 무유도기를 중심으로 활발한 교류가 있었던 것을 알 수 있다. 이러한 북부 구주에서 출토된 고려 도자의 흐름은 4기로 구분할 수 있다. 첫째, 11세기 후반으로 여일간의 정식 국교 회복과 더불어 고려 도자가 북부구주지역으로 처음으로 들어왔다. 둘째, 12세기 전반으로 양질 청자와 더불어 조질 청자의 양이 많아지면서 민간 교류가 더욱 활발해졌다. 셋째, 12세기 후반에서 14세기 전반으로 일본 도시부에서 고려 청자의 위상이 높아짐에 따라 하카타(博多)에서 고려 도자의 출토량이 급격히 줄어들었다. 넷째, 14세기 후반으로 왜구나 중국 명나라의 해금정책을 배경으로 고려도자의 수입량이 늘어나는 양상을 볼 수 있다. 이러한 북부 구주 지역 출토 고려 도자에서는 고대와 달리 확실한 미적 가치 기준과 공식적 무역 체제의 정립을 엿볼 수 있다. 이것은 다른 일본 내륙부 지방에서 찾아보기 어려운 것으로 북부 구주는 여일교역의 흔적을 그대로 말해주고 있다고 하겠다. The relationship between northern Kyushu (Japan) and Korea had been very kin from pre-history era. Goryeo pottery excavated from northern Kyushu area proved to be helpful for understanding trade between Goryeo and Japan in Medieval era. This kind of Goryeo pottery will be presented in four periods. Second half of the 11th century: After official trade started between Goryeo and Japan, Goryeo pottery begin to appear archeological site in North Kyushu area. First half of the 12th century: With increasing of private trade between Goryeo and Japan, not only high quality celadons but also low quality celadons begin to increased. Second half of the 12th century to first half of the 14th century: Despite of Japanese aristocracy in Kyoto, Kamakura regarded Goryeo celadon as high-quality articles, imported Goreyo pottery passed away from northern Kyushu. Second half of the 14th century: Due to Ming-period ban on private trade and invadion of Japanese pirate, imported Goreyo pottery in norhern Kyushu increased again. Imported Goryeo pottery in northern Kyushu show the standard of aesthetic values and system of official trade in medieval Japan. Such changing process can be seemed not other area in Japan only northern Kyushu.