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Inhibition of a Neutral Form of Sphingomyelinase by Alkylthioureido-1,3-propandiols, KY353X Series
( Sang Mi Jung ),( Eui Man Jeong ),( Dong Hwawn Jo ),( Mi Reyoung Chin ),( Hyung Jin Jun ),( Yong Hyun Kim ),( Hyung Jun Jeon ),( Dong Hun Lee ),( Mi Ja Park ),( Mi Jung Oh ),( Chul Bu Yim ),( Dae Kyo 한국응용약물학회 2003 Biomolecules & Therapeutics(구 응용약물학회지) Vol.11 No.3
A Comparison of Systematic Sampling Designs for Forest Inventory
Yim, Jong Su,Kleinn, Christoph,Kim, Sung Ho,Jeong, Jin-Hyun,Shin, Man Yong Korean Society of Forest Science 2009 한국산림과학회지 Vol.98 No.2
This study was conducted to support for determining an efficient sampling design for forest resources assessments in South Korea with respect to statistical efficiency. For this objective, different systematic sampling designs were simulated and compared based on an artificial forest population that had been built from field sample data and satellite data in Yang-Pyeong County, Korea. Using the k-NN technique, two thematic maps (growing stock and forest cover type per pixel unit) across the test area were generated; field data (n=191) and Landsat ETM+ were used as source data. Four sampling designs (systematic sampling, systematic sampling for post-stratification, systematic cluster sampling, and stratified systematic sampling) were employed as optimum sampling design candidates. In order to compute error variance, the Monte Carlo simulation was used (k=1,000). Then, sampling error and relative efficiency were compared. When the objective of an inventory was to obtain estimations for the entire population, systematic cluster sampling was superior to the other sampling designs. If its objective is to obtain estimations for each sub-population, post-stratification gave a better estimation. In order to successfully perform this procedure, it requires clear definitions of strata of interest per field observation unit for efficient stratification.
Yim, Woo-Jong,Woo, Sung-Man,Kim, Ki-Yoon,Sa, Tong-Min Korean Society of Soil Science and Fertilizer 2012 한국토양비료학회지 Vol.45 No.1
Improvement of plant growth by Methylotrophic bacteria can be influenced through alterations in growth modulating enzymes or hormones, especially by decreasing ethylene levels enzymatically by 1-aminocyclopropane-1-carboxylate (ACC) deaminase or by production of indole-3-acetic acid (IAA). In this study, the effect of seven strains of Methylobacterium on seedling ethylene emission of tomato and red pepper plants was evaluated under greenhouse condition. Ethylene emission was lowest in Methylobacterium oryzae CBMB20 inoculated tomato plants and CBMB110 inoculated red pepper plants at 47 days after sowing (DAS). However, at 58 DAS all inoculated plants showed almost similar pattern of ethylene emission. Methylobacterium inoculated tomato and red pepper plants showed significantly less ethylene emission compared to control. Our results demonstrated that Methylobacterium spp. inoculation promotes plant growth due to the reduction of ethylene emission and therefore can be potentially used in sustainable agriculture production systems.
Aneurysms of the Nontraumatic Extracranial Carotid Artery and Vertebral Artery : Cases Report 증례보고
Yim, Man Bin,Kim, Sang Youl,Lee, Jang Chull,Son, Eun Ik,Kim, Dong Won,Kim, In Hong,Song, Dal Won,Zeon, Seok Kil 대한신경외과학회 1993 Journal of Korean neurosurgical society Vol.22 No.8
비외상성 두개강외 경동맥 및 추골동맥의 동맥류는 드문 질환으로 알려져 있다. 저자들은 이러한 드문 경동맥 동맥류 2례 및 추골동맥 동맥류 1례를 경험하였기에 임상증상의 특징, 오진의 가능성 및 치료방법에 대하여 고찰하였다.
Arteriovenous Malformations of the Brain Associated with Cerebral Aneurysms
Yim, Man Bin,Kim, Il Man,Kim, Sang Youl,Lee, Jang Chull,Son, Eun Ik,Kim, Dong Won,Kim, In Hong 대한신경외과학회 1994 Journal of Korean neurosurgical society Vol.23 No.2
1981년부터 1993년 4월까지 계명대학교 동산의료원에서 가료한 뇌동정맥 기형 96례중 8례가 뇌동맥류를 동반하였고, 이중 다발성 뇌동맥류를 가진 3례가 있어 총 동맥류 수는 13개였다. 뇌동맥류를 동반한 예들과 동반하지 않은 예들의 평균연령을 비교한 바, 뇌동맥류를 동반하지 않은 예들은 26세 동반한 예들은 44세로써, 뇌동맥류를 동반한 예들에서 연령이 높았다(p<0.001). 뇌동맥류는 뇌혈관촬영상 뇌동정맥기형의 직경이 3㎝미만인 56례중 1례에서, 3~5㎝인 23례중 4례에서, 5㎝이상인 14례중 3례에서 동반되어, 뇌동맥류는 뇌동정맥기형의 크기가 큰 예들에서 동반되는 율이 높았다(p<0.05). 또한 총 동맥류 13개중 12개가 뇌동정맥 기형에 혈류를 공급하는 동맥의 근위부나 원위부에서 발견되었다. 치료는 한 예를 제외한 모든 예들에서 뇌동정맥기형을 제거하고 동시에 뇌동맥류를 결찰 하였다. 한 예에서 편측 시력상실이 야기되었으나 다른 예들에서는 좋은 결과를 얻었으며 사망예는 없었다. 따라서 저자들의 경험에 의하면 뇌동맥류의 발생에 뇌혈류의 증가가 관여한다는 설이 타당하고 또한 뇌 동맥류를 동반한 뇌혈관기형 환자들을 치료할 때 뇌동정맥기형을 수술시 뇌동맥류를 동시에 결찰하는 것이 좋다고 생각된다.
Man Sung Yim,Un Chul Lee,Ho Chun Suk Korean Nuclear Society 1983 Nuclear Engineering and Technology Vol.15 No.1
경수형원자로 핵연료봉의 거동분석을 위한 전산코드인 FRAPCON-1 코드가 월성 1호기에 장전되는 CANDU형 핵연료봉의 거동분석을 위해 적절한지를 평가하였다. 연료내의 중성자속의 감소와 연료피복재간 열전달을 계산하는 FRAPCON-1 코드의 모형들을 수정하였으며 핵분열 기체방출모형의 CANDU 핵연료에 대한 타당성여부를 검토하였고 피복재와 냉각수간의 열전달 계수 계산을 위해 중수특성을 사용하였다. 수정된 코드 FRAPCON-1-CSK를 사용하여 월성 1호기 핵연료의 각 설계변수들에 대한 민감도 분석을 수행하였다. 아울러 월성 1호기 핵연료봉의 거동특성분석도 수행하였는데 계산된 결과들은 CANDU 핵연료봉에 대한 설계기준이 알러져 있지 않는 관계로 경수로 핵연료봉 설계기준의 입장에서 검토되었다. The LWR fuel performance analysis computer code, FRAPCON-1, are evaluated to investigate the performance of CANDU fuel elements loaded in Wolsung-1 reactor. The FRAPCON-1 models of neutron flux depression in fuel and of fuel-to-cladding heat transfer are modified, and the validity of fission gas release model for CANDU fuel is evaluated. And the heavy water properties are provided in calculating the heat transfer coefficient between cladding and coolant. By using the modified code, FRAPCON-1-CSK, the sensitivity studies are carried out for Wolsung-1 fuel element design parameters. The performance analysis is also performed for Wolsung-l fuel elements. The calculated results are discussed in terms of. LWR fuel design criteria because of unavailability of CANDU fuel design criteria.