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2000년-2009년 광주 광역시 지역의 급성설사환자의 분변에서 분리한 살모넬라 균주에서의 항생제 내성률 조사
김태순,김민지,김선희,서진종,기혜영,정재근,김은선,문용운,하동룡,김민경,임숙경,남향미,Kim, Tae Sun,Kim, Min Ji,Kim, Sun Hee,Seo, Jin-Jong,Kee, Hye Young,Chung, Jae Keun,Kim, Eun Sun,Moon, Yong Woon,Ha, Dong Ryong,Kim, Min Kyeong,Lim, Suk The Microbiological Society of Korea 2013 미생물학회지 Vol.49 No.2
지난 2000년부터 2009년까지 10년간 광주광역시 지역의 급성설사환자로부터 분리한 총 596개의 살모넬라균주에 대하여 총 16종의 항생제에 대한 감수성 검사를 실시한 결과, 내성빈도가 가장 높았던 약제는 ampicillin (43%), tetracycline (35.9%), nalidixic acid (31.5%), 그리고 chloramphenicol (26.2%) 순으로 나타났다. 혈청형 간에 항생제 내성률에 차이가 있었는데 S. Enteritidis와 S. Typhimurium이 각각 가장 높은 내성률을 보인 약제는 ampicillin (51.1%)과 tetracycline (77.9%)이었다. 총 89가지 내성패턴이 관찰되었으며, 26% (155/596)의 살모넬라 분리주는 검사한 16가지 약제에 모두 감수성을 보였다. 약 21% (127/596) 및 15% (87/596)의 분리주는 각각 한 개 및 두 개의 약제에 내성을 나타냈다. 그 외의 살모넬라 분리주(227/596, 38%)는 세가지 이상의 약제에 내성을 나타냈다(다제내성균). 다제내성균이 가장 높은 비율로 나타난 혈청형은 S. Paratyphi B (76.5%), S. Typhimurium (58.2%), 그리고 S. Enteritidis (40.2%)의 순이었다. 가장 흔한 다제내성패턴은 ampicillin-chloramphenicol-nalidixic acid-ticarcillin (36/227, 15.8%)이었으며 이러한 패턴을 보였던 다제내성균의 대부분(35/36, 97.2%)이 S. Enteritidis이었다. Antibiotic susceptibility was examined for 596 Salmonella isolates from patients with acute gastroenteritis during 2000-2009 in Gwangju area in South Korea. Of 16 antibiotics tested, ampicillin resistance (43%) was the most commonly observed resistance among the 596 Salmonella sp. isolates, followed by tetracycline (35.9%), nalidixic acid (31.5%), and chloramphenicol (26.2%). Antibiotic resistance varied among serotypes: The highest resistance of S. Enteritidis and S. Typhimurium was to ampicillin (51.1%) and tetracycline (77.9%), respectively. A total of 89 resistance patterns were observed, and 26% (155/596) of Salmonella isolates were susceptible to all antibiotics tested in this study. About 21% (127/596) and 15% (87/596) of the isolates were resistant to one and two antibiotics, respectively. The rest of Salmonella isolates (227/596, 38%) were resistant to three or more antibiotic agents. The highest multi-drug resistance (MDR) was observed in serotype S. Paratyphi B (76.5%), followed by S. Typhimurium (58.2%), and S. Enteritidis (40.2%). The most common resistance pattern of MDR isolates was ampicillin-chloramphenicol-nalidixic acid-ticarcillin (36/227, 15.8%), most of which (35/36, 97.2%) were S. Enteritidis.
Effect of Organic and Inorganic Zinc Sources on Zinc Availability under Flooded Soil Condition
김태순,김재성,한강완,Kim, Tae-Soon,Kim, Jae-Sung,Han, Kang-Wan 한국토양비료학회 1981 한국토양비료학회지 Vol.13 No.3
In order to evaluate effectiveness of zinc source on uptake of zinc by rice plant, a pot experiment carried out using ZnEDTA and $ZnSO_4$ in a glasshouse. The results obtained were summarized as follows: The effectiveness of zinc source on uptake of zinc by rice plants was different with different soil. Namely ZnEDTA was more efficient than $ZnSO_4$ in increasing yield of zinc and concentration of zinc in the plant grown on Jecheon calcareous soil. In case of Keumgok acid soil, however, no superiority of ZnEDTA treatment was found. The plant growing status of ZnEDTA treated calcareous soil was also shown that larger number of tillers per hill, bigger height of the plant and good yield of dry matter production than those of the plant grown on $ZnSO_4$ treatment. Regardless of the zinc source, smaller number of tillers per hill, shorter height of the plant, and the lowest yield of dry matter were shown in the treatment of zinc and straw mixed with both soils. It seemed that more applied zinc was to be fixed by the straw application resulting in poor zinc yield. The extent of the zinc fixation showed markedly in Jecheon calcareous soil. 아연비료로서 ZnEDTA와 $ZnSO_4$의 유효도를 평가하기 위해서 수도의 아연흡수 실험을 시도했다. 수도의 아연흡수에 있어서 급원별(給源別) 아연 유효도는 토양에 따라서 차이(差異)가 있었다. pH가 높은 제천(提川) 석회암질(石灰岩質) 토양에서는 ZnEDTA가 $ZnSO_4$보다 수도체아연 농도(濃度)와 아연 흡수량(吸收量)을 증가시키는데 더 유효했다. 그러나 산성(酸性)인 금곡토양의 경우도 ZnEDTA의 유효성이 인정(認定)되지 않았다. ZnEDTA를 처리(處理)한 제천(提川) 석회암질(石灰岩質) 토양에서 생육(生育)한 수도는 $ZnSO_4$ 처리구 수도보다 분얼수와 초장(草丈)이 컸고 건물생산량(建物生産量)도 높았다. 아연급원에 관계없이 아연와 유기물(有機物) 처리구에서 자란 수도의 분얼수, 초장(草丈), 건물생산량(建物生産量)은 모두 다 적었다. 이것은 유기물(有機物)을 첨가(添加)하므로서 시비(施肥) 아연의 고정(固定)이 더 일어나서 수도체의 아연수율이 적기 때문이라고 본다. 아연고정 정도(程度)는 제천(提川) 석회암질(石灰岩質) 토양에서 컸다.
김태순,박태원,이춘영,서경숙,Kim, Tai-Soon,Park, Tai-Won,Lee, Chun-Yung,Seu, Kyung-Sook 대한화학회 1961 대한화학회지 Vol.5 No.1
Two methods for the determination of Cesium-137 in various foods(ashes) were compared. The one comprises two steps, the first being the separation of alkalies as cobaltinitrites or perchlorates by the radiochemical method, and the second being the measurement of photopeak area due to the presence of Cs-137 by the use of scintillation spectrometer. The other method is the direct subjection of ash samples to the spectrometry without the radiochemical separation. The combined contribution of K-40 and Rb-87 to the spectrum was not found on account of the difference in energies of these nuclides. These two methods gave, a good agreement in the determination of Cs-137 in 50-100g ash samples of vegetables or cereals under investigation.
유한요소 교호법을 이용한 모드 I 하중 하의 삼차원 균열의 해석
김태순,박재학,Kim, Tae-Sun,Park, Jae-Hak 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.4
The finite element alternating method is extended further for general three dimensional cracks in an isotropic body subjected to the mode I loading. The required analytical solution for a dime dimensional crack in an infinite isotropic body is obtained by solving the integral equations. In order to remove the high singularity in integration, the technique suggested by Keat et al. was used. With the proposed method several example problems are solved in order to check the accuracy and efficiency of the method.