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Presentation of immersed surface-links by marked graph diagrams
Kamada, Seiichi,Kawauchi, Akio,Kim, Jieon,Lee, Sang Youl World Scientific Publishing Company 2018 Journal of knot theory and its ramifications Vol.27 No.10
<P>It is well known that surface-links in <TEX>$ 4$</TEX>-space can be presented by diagrams on the plane of <TEX>$ 4$</TEX>-valent spatial graphs with makers on the vertices, called marked graph diagrams. In this paper, we extend the method of presenting surface-links by marked graph diagrams to presenting immersed surface-links. We also give some moves on marked graph diagrams that preserve the ambient isotopy classes of their presenting immersed surface-links.</P>
Kamada Hachiro,Matsui Yoshitaka 아세아·태평양축산학회 2023 Animal Bioscience Vol.36 No.9
Objective: We aimed to determine the effects of 12-oxoeicosatetraenoic acid (12-KETE)- induced placenta release on the performance of mother cows (milk yield, ovarian function, and blood plasma biochemical properties). Methods: Experimental treatments were as follows: i) natural delivery including natural placental release (control cows); ii) induced calf delivery with placental retention (RP cows); and iii) induced calf delivery and 12-KETE-induced placental release (KE cows). Delivery in pregnant KE cows was induced with dexamethasone and prostaglandin. These cows were injected with 12-KETE after calf discharge, resulting in the release of the fetal placenta. RP cows were not treated with 12-KETE after inducing delivery, resulting in placental retention. Results: The milk yield in RP cows during the first 50 days after delivery was significantly lower than that in control cows (p<0.05), whereas KE cows exhibited a similar milk yield to that of control cows. The postpartum plasma progesterone levels of control cows increased 14 days after delivery on average; however, its increase was delayed by 10 days in RP cows. Meanwhile, the 12-KETE treatment (KE cows) brought the timing of progesterone increase forward to the normal level (control cows). Among the 20 biochemical parameters examined, the total cholesterol levels in blood plasma 14 days after delivery were lower in RP cows than that in the other two treatment groups (control cows and KE cows) (p<0.05). In addition, the plasma level of haptoglobin tended to be low in cows that discharged their placentas shortly after delivery. Conclusion: These findings indicate that 12-KETE treatment can alleviate the disorder caused by placental retention.
Kamada Shinobu,심남훈,이은방,윤종휘,김상운 해양환경안전학회 2010 해양환경안전학회 학술발표대회 논문집 Vol.2010 No.11
원유, 화학물 등 위험화물의 해상운송 증가로 인하여 해양오염사고의 개연성이 높아짐에 따라 다양한 방제대책 수립이 되고 있다. 본 연구에서는 선제적 대응태세의 강화를 목적으로 해양오염 대응태세를 종합 평가 시스템을 설계하기 위한 기초연구로 평가모듈을 설계하였 다. 전략대응태세 평가와 현장대응태세 평가를 위한 공통평가지표와 개별지표를 설정하여 방제기관 및 방제지원·협력기관을 정성적, 정량적으로 평가할 수 방안을 제안하였다.
Kamada Shinobu,이은방,윤종휘,심남훈,이경희 해양환경안전학회 2011 해양환경안전학회 학술발표대회 논문집 Vol.2011 No.06
오염물질의 유출에 의한 해양오염사고에 대응하기 위하여 각 국가는 방제체제를 구축하고 있다. 방제체제 구축을 위하여 대 비해야 하는 방제능력 목표치가 국가마다 설정되어 있지만 그 산정방법에 차이점이 많기 때문에, 앞으로 국가간에 국제적인 해양오 염 대응체제를 구축하려고 할 때 방재능력이라는 중요한 요소가 공통적이 아니라는 것은 문제가 크다고 할 수 있다. 이 연구는 국가간에 연결된 국제적인 방제체제를 구축하기 위하여 다양화된 방제능력을 표준적인 정량치로 통일시킬 수 있는 표준상식을 설계하는 것을 도모하는 것이다.
Selenium Status of Soil, Herbage and Beef Cattle in Southern Thailand
Kamada, H.,Nishimura, K.,Krongyuti, P.,Sukkasame, P.,Phoengpong, N.,Intramanee, S. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.6
The selenium status of beef cattle in the southern part of Thailand and the selenium concentration of soil and herbage consumed by those animals were investigated. Samples were collected from three areas with different soil types, namely, sandy soil, peat soil and laterite soil. The selenium concentration of soil, herbage and blood plasma showed a similar tendency; the values of laterite soil were higher than those of the other two areas. However, the selenium concentration of herbage of each pasture was lower than the NRC requirement, and that of blood plasma was not in the sufficient level. These data suggested that beef cattle raised in these areas were in the chronic selenium deficiency. We concluded that selenium supplementation is needed for the increase of animal productivity in the southern part of Thailand.
Kamada Shinobu,이은방,윤종휘,심남훈,이경희 해양환경안전학회 2011 해양환경안전학회 학술발표대회 논문집 Vol.2011 No.06
방제활동에는 기상, 기름의 성상 등 여러 요인이 고려되어야 성공적인 방제활동을 수행할 수 있다. 추계학술발표에서는 자연적 환경요소와 상황에 적합한 방제방법의 설정에 관한 기초 연구 내용을 발표하고자 한다.