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- 저자 : S.W. Yeh (검색결과 30 건)
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Lim, H. G.,Yeh, S. W.,Kug, J. S.,Park, Y. G.,Park, J. H.,Park, R.,Song, C. K. Springer-International 2016 Climate dynamics Vol.46 No.11
<P>In order to examine the threshold of the volcanic forcing that leads to the El Nino-like warming, we analyze a millennium ERIK simulation (AD 1000-1850) forced by three external forcings including greenhouse gases, solar forcing and volcanic eruptions using the ECHO-G coupled climate model. It is found that there exists a threshold of the volcanic forcing above 15 W/m(2) to lead the El Nino-like warming in the climate model. When the volcanic forcing is above this threshold forcing, then the intensity of the Inter-tropical Convergence Zone (ITCZ) is weakened and its position is shifted to the south. This might be associated with the processes of less evaporation in the subtropical cloudless region by a cooling due to the reduction of net surface shortwave radiation. Concurrently, a weakening of ITCZ is associated with a weakening of the trade winds and the subsequent Bjerknes feedback causes El Nino-like warming. Therefore, El Nino-like warming events can occur when volcanic eruption is above threshold forcing, implying that there exists a certain level of radiative forcing change which is capable of changing the state of tropical Pacific sea surface temperature. The last millennium simulation of Paleoclimate Modeling Intercomparison Project Phase 3 climate models also indicates that there may exist a threshold forcing to lead the El Nino-like warming, which has been also discussed in the present study.</P>
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忠南錦江流域住民의 絲狀蟲에 關한 疫學的 調査硏究(第1報)
金鍾煥,沈雲澤,李泰淑,芮旻海,崔東河,朴元學 충남대학교 의과대학 지역사회의학연구소 1974 충남의대잡지 Vol.1 No.1
During June to November 1974, a survey of 1,749 (male 907, female 842) inhabitants for filariasis was made in several areas, Chung Cheong-nam Do, and the results are summerized as follows; 1. The positive rate of microfilaria was 0.17 per cent from Gongju(2 cases) and Ganggyeong(1 case), however no positive case of microfilaria was found in the inhabitants of Seosan area. 2. The microfilaria in per 20 cmm of blood showed lower density and it was about four worms. 3. 301 households in the surveyed areas were subjected for the survey releated with filariasis by the questionnaire. The family member of 172(57.1%) households showed 5 to 8 persons, agriculture 68.4%, and 71.8% of households lived more than 20 years in the same village. 4. 56.9% of household showed the protection from the mosquito biting with mosquito net or insecticides spray and 49.8% of residents knew the "Sudung-dari" dialet for elephantiasis, however some of them were missunderstood the cause of elephantiasis.
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金鍾煥,沈雲澤,李泰淑,芮旻海,崔東河,朴元學 충남대학교 의과대학 지역사회의학연구소 1975 충남의대잡지 Vol.2 No.1
A study on morphology and periodicity of microfilariae was carried out in the area surveyed, Chung Cheong-nam Do. 1. The measurements of microfilariae from the Giemsa stanined thick film were made; and they showed that body length was 186.0(156-245)μ, maximum width 5.0(4-6)μ, and cephalic space length by width 1.5:1, per cent distance from anterior end to: cephalic space 4.21, nervering 22.87, excretory pore 31.35, excretory cell 38.85, G_1 cell 53.77, anal pore 82.04, from the last nucleus of posterior end to : the last 2nd nucleus 2.56, and the posterior body nucleus 4.69μ, respectively. 2. The periodicity of the micofilaria counts in peripheral blood of a man was observed, and it was found that the characteristic nocturnal periodicity was seen from in the case. The peak of microfilaria counts showed between 12 p.m. and 4 a.m. 3. When stained with Giemsa solution, 15.9% of microfilariae shed their sheath. As a result of the above findings the microfilariae might be identified Brugia malayi.
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