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구두 발표 : 구두발표(OC) - 농업화학 및 생태,식품분야 ; 토양 유기물 함량에 따른 유기염소계 살충제 Endosulfan의 흡착 특성
황정인 ( Jeong In Hwang ),전영환 ( Young Hwan Jeon ),김정민 ( Jung Min Kim ),석다롱 ( Da Rong Seok ),이은향 ( Eun Hyang Lee ),전상오 ( Sang Oh Jeon ),이성은 ( Sung Eun Lee ),김장억 ( Jang Eok Kim ) 한국환경농학회 2013 한국환경농학회 학술대회집 Vol.2013 No.-
A study on fate and behavior of endosulfan, which is an organochlorine insecticide detected mainly in Korean soil, is important due to its toxicity and persistence in soil environment. To estimate isotherms for the adsorption of endosulfan isomers (α-, β-) and their metabolite (-sulfate) in soil, their adsorption amounts were investigated in various soils containing different organic matter contents. The tested soils were collected at Ansim and Gunwi, and some of them were prepared as organic matter-removed (OMR) samples using H2O2. As time-dependent adsorbed amounts of endosulfan reached to their equilibrium after 6 h in Ansim, Gunwi and OMR Ansim soils, OMR Gunwi soil did not adsorb the pesticide within 24 h. The adsorption isotherms of endosulfan isomers and their metabolite fitted to Freundlich adsorption isotherms for three equilibrated soil samples. The correlation coefficients (R2) of the isotherms were greater than 0.964. Freundlich adsorption coefficient (Kf) ranged from 8.66 to 19.20 for α-endosulfan, from 7.08 to 20.49 for β-endosulfan and from 8.62 to 17.98 for endosulfan-sulfate, respectively. The difference of Kf values of endosulfan indicated that the adsorption amount of endosulfan was dependent on the contents of organic matter. Therefore, the behavior of endosulfan in soil environment is definitely affected by the amount of organic matters in soil.
황유정 ( Yu Jeong Hwang ),진석재 ( Suk Je Jin ),정용진 ( Yong Jin Jeong ),명형준 ( Hyung Joon Myung ),신혜영 ( Hae Young Shin ),김호동 ( Ho Dong Kim ),주영은 ( Young Eun Joo ) 대한소화기학회 2021 대한소화기학회지 Vol.78 No.5
A 54-year-old man was transferred from another hospital due to a hematoma in the third portion of the duodenum on abdomen CT. He had been admitted for 2 weeks due to vomiting at another hospital. He had abdominal discomfort and nausea without abdominal pain when he visited the Gwangyang Sarang Hospital. Other than a distended abdomen and mild general abdominal tenderness, the results of physical examination were unremarkable. Abdominal CT revealed an approximately 9 cm thick walled hematoma at the anteroinferior site of the duodenal third portion. Upper endoscopy revealed stenosis of the third portion of the duodenum without mucosal lesions. The endoscope was not advanced through the narrowed duodenal lumen. A retroperitoneal hematoma was diagnosed, and his state was classified as subacute rather than acute based on the duration. The surgeon did not recommend surgical treatment. Urgent treatment was unnecessary; he was managed conservatively. The size of the hematoma decreased from 9.0 cm to 5.8 cm on the following CT. He could begin to eat food on the 26th admission day, and he was discharged on the 31st admission day. The hematoma disappeared entirely on the following CT. This paper describes a rare case of idiopathic retroperitoneal hematoma with a spontaneous resolution. (Korean J Gastroenterol 2021;78:295-299)
황진호 ( Hwang Jin-ho ),정용은 ( Jeong Yong-eun ),정상국 ( Jung Sang Kug ),이송 ( Lee Song ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.2
Recently, environmental pollution is the one of most important issues. So many kinds of eco-sound construction materials have been a matter of concern. Prefabricated vertical drain made of natural fiber may be one of the solutions instead of Plastic Drain Board which can cause some environmental problems. In this study, consolidation test of PDB, FDB and SDB, were conducted by using the multiplex consolidation device which was designed for the purpose of direct comparison of drainage characteristics. From the test results, initial settlement behavior showed a tendency that the larger flow capacity Plastic Drain Board has, the faster initial settlement was. However, as consolidation process goes by, their time-settlement behaviors converged on some extents.
구두발표(OC)-농업화학 및 생태,식품분야 : OC-01 ; 토양잔류 Endosulfan의 오이유묘 중 흡수이행량 조사
황정인 ( Jeong In Hwang ),전영환 ( Young Hwan Jeon ),전상오 ( Sang Oh Jeon ),이상협 ( Sang Hyeob Lee ),이성은 ( Sung Eun Lee ),김장억 ( Jang Eok Kim ) 한국환경농학회 2014 한국환경농학회 학술대회집 Vol.2014 No.-
Distribution of organochlorine insecticide, endosulfan isomers (α- and β-) and their metabolite (-sulfate) absorbed from soil into cucumber plug seedling was investigated in relation with passed time, treated amount, and plant growth. Cucumber plants were sampled with corresponding soils at 15 and 30 days after transplanting, and their weight and length were measured in each part such as root, stem, leaf, and fruit. The length and weight of plant parts showed increasing tendencies during the experimental period. The residual amounts of endosulfan isomers in soil were continuously declined, while endosulfan-sulfate was slightly produced. The amounts of endosulfan isomers absorbed into plants were increased by 10 days; however, after the time, the amounts were insignificantly decreased. The absorbed amounts of endosulfan isomers from soil were ranged from 0.4 % to 1.1 %, and 3.4∼4.6 % of the produced metabolite were subjected to plant uptake. Distribution of endosulfan (α-, β-, and -sulfate) was the greatest in root throughout the experimental period, whereas that in stem, leaf, and fruit was varied with the passed time. The residual amount of β-endosulfan in a cucumber plant was dominantly great, followed by α-endosulfan and endosulfan-sulfate. Consequently, it is most likely that endosulfan isomers and their metabolite could be absorbed by cucumber root and be transferred to subsequent parts such as stem, leaf, and fruit.
임신 제 3 분기까지 진행된 비교통성 흔적자궁각 임신 1 예
황경주(Kyung Joo Hwang),양정인(Jeong In Yang),오기석(Kie Suk Oh),김행수(Haeng Soo Kim),안은주(Eun Joo Ahn),양성천(Seong Cheon Yang),이은주(Eun Ju Lee),주희재(Hee Jae Joo) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.1
The uterus with rudimentary horn occurs as a result of a lack of development during fetal life of the middle and lower parts of one of the Miillerian ducts, in which there is a failure of fusion of the two ducts, The incidence of this uterine anomaly is rare. Many cases of rudimentary uterine horn are not discovered since they do not become involved in a pregnancy, and thus remain symptomless and uncomplicated, and the diagnosis usually being made only with pregnancy with rupture. In this presentation, we describe a case of diagnosis and management of unruptured non-communicating rudimentary uterine horn pregnancy at the third trimester. The patient diagnosed by ultrasonography and MRI, was hospitalized for further evaluation and delivery under the impression of unruptured non-communicating rudimentary horn pregnancy. A living male infant weighing 1,930 gm was delivered by cesarean section at 33+l weeks due to impending preterm labor. Some articles concerned this subject were reviewed briefly to discuss relevant method of diagnosis, treatment, and clinical characteristics.
03 구두발표 : 구두발표(OA) - 농업환경 및 토양,수질 분야 ; OA-02 : 토성이 다른 토양 중 Endosulfan 이성질체의 잔류양상 예측
황정인 ( Jeong In Hwang ),전상오 ( Sang Oh Jeon ),이상협 ( Sang Hyeob Lee ),강민수 ( Min Su Kang ),정혜현 ( Hye Hyun Jung ),곽세연 ( Se Yeon Kwak ),이성은 ( Sung Eun Lee ),김장억 ( Jang Eok Kim ) 한국환경농학회 2015 한국환경농학회 학술대회집 Vol.2015 No.-
Pesticides persisted in soil environment may be subjected to the unexpected uptake by plant root. As these absorbed pesticides can result eventually in safety problems to agricultural products, it is required to predict the plant uptake extent of soil-persisting pesticides inadvance. One of the previous prediction methods is to assess the uptake extent using a mathematical model. When developing the plant uptake model of soil-persisting pesticides, adsorption and dissipation interactions between pesticides and soil may be parameters that play major roles in determining the uptake extent into plant. With considerations of parameters relative to these interactions, we developed a chemical-specific residue (CSR) model, Ce(t)=C0·(1/2)t/T/Kd, in order to predict the residual patterns of endosulfan isomers ( - and -) in soils containing different organic matter contents. The adsorption (Kd) and dissipation (T) parameters were obtained from indoor experiments, and the applicability of CSR model was assessed by comparing between experimental measurements and modeled estimates. The Kd and T values were significantly varied depending on organic matter contents in the tested soils. For the low organic matter-containing soil, the Kd and T values of the -isomer were 50.2 mL g-1 and 16 d, respectively; the values of the -isomer were 54.4 mL g-1 and 231 d, respectively. On the other hand, for the high organic matter-containing soil, the Kd values were 377.4 mL g-1 for the -isomer and 407.4 mL g-1 for the -isomer, and the T values for the - and -isomers were 139 and 347 d, respectively. Using these parameter values, the modeled values were in good agreement with the measured values with standard errors of less than 23.5%. Therefore, the developed CSR model may be used as a tool for predicting the residual amount of endosulfan in soil.