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차윤엽 ( Yun Yeop Cha ),고연석 ( Youn Seok Ko ),이정한 ( Jung Han Lee ),정원석 ( Won Suk Chung ),신병철 ( Byung Cheul Shin ),전찬용 ( Chan Yong Jeon ),고호연 ( Ho Yeon Go ),선승호 ( Seong Ho Sun ),장보형 ( Bo Hyoung Jang ),송윤경 한방재활의학과학회 2013 한방재활의학과학회지 Vol.23 No.2
Objectives : The purpose of this study is to explore the trends of Korean medical study on stress in the industrial worker. Methods : We received numbers of the studies about stress in the industrial worker from 6 Korean web databases, using key words such as ‘Industry AND Stress’, ‘Oriental medicine AND Stress’, ‘Worker AND Stress’, ‘Workplace AND Stress’. We received 12 research papers and they were analyzed and the journals, the authors, the contents of 3 classification of those research papers. Results : Among them, we had 6 reviews of Dept. of preventive medicine and Dept. of third medicine, college of Korean Medicine, Won-kwang University, and the rest of them were 6 reviews. We had 4 reviews of Korean Journal of Oriental Preventive Medical Society, 2 reviews of the Journal of Traditional Korean Medicine, 2 reviews of Journal of Oriental Neuropsychiatry and so on. According to the contents of reviews, we had 7 reviews of correlation of industrial worker and stress, 4 reviews of cause on the industrial worker’s stress and 1 case report. Conclusions : We reviewed the trends of Korean medical study on stress in the industrial worker. The stress in the industrial workers were related with the type of occupation, social psychology, drinking, smoking, the satisfaction of job, the harmony of organization.And we knew that the musculoskeletal pain was related to the industrial worker’s stress. In the future, abundant case studies, follow-up trials and RCTs should be done about the industrial worker’s stress.
An Asynchronous Algorithm for Balancing Unpredictable Workload on Distributed-Memory Machines
Chung, Yong-Hwa,Park, Jin-Won,Yoon, Suk-Han Electronics and Telecommunications Research Instit 1998 ETRI Journal Vol.20 No.4
It is challenging to parallelize problems with irregular computation and communication. In this paper, we propose an asynchronous algorithm for balancing unpredictable workload on distributed-memory machines. By using an initial workload estimate, we first partition the computations such that the workload is distributed evenly across the processors. In addition, we perform task migrations dynamically for adapting to the evolving workload. To demonstrate the usefulness of our load balancing strategy, we conducted experiments on an IBM SP2 and a Cray T3D. Experimental results show that our task migration strategy can balance unpredictable workload with little overhead. Our code using C and MPI is portable onto other distributed-memory machines.
Chung, Hak-Jae,Kim, Bong-Ki,Kim, Jong-Mu,Lee, Hyun-Gi,Han, Joo-Hee,Kim, Nam-Hyung,Park, Jin-Ki,Seong, Hwan-Hoo,Yang, Boh-Suk,Chang, Won-Kyong,Ko, Yeoung-Gyu The Korean Society of Animal Reproduction 2006 Reproductive & developmental biology Vol.30 No.4
Transforming growth $factor-{\beta}\;(TGF-{\beta})$ has been shown to have a positive effect on in vitro fertilization (IVF) and has been reported to stimulate meiosis at follicular level in variety of species. The study was designed to determine the expression patterns of $TGF-{\beta}1,\;TGF-{\beta}$ receptors type I, II and Smads gene in bovine oocytes and embryos. $TGF-{\beta}1$ and their receptors were observed in the unfertilized oocytes. $TGF-{\beta}1$ and type II receptor were not expressed at the blastocyst stage, however, only type I receptor was exclusively observed at the same stage. The blastocyst stage, in particular, showed high levels of mRNA expression patterns containing a $TGF-{\beta}1$ type I receptor. The mRNA expression pattern of Smad 2 at all stages of embryonic development was similar in all respect with $TGF-{\beta}1$ type I receptor. On the contrary, Smad 3 and 4 were expressed with high and low level mRNA at the blastocyst stage. In conclusion. it is suggested that $TGF-{\beta}1$ signaling may be regarded as an important entity during the preimplantation embryo development.
( Suk Hyeon Jeong ),( Su Young Kim ),( Hyun Lee ),( Jun Soo Ham ),( Keum Bit Hwang ),( Subin Hwang ),( Sun Hye Shin ),( Myung Jin Chung ),( Seung Heon Lee ),( Sung Jae Shin ),( Won Jung Koh ) 대한결핵 및 호흡기학회 2015 Tuberculosis and Respiratory Diseases Vol.78 No.4
This is a report of the first South Korean case of a lung disease caused by Mycobacterium simiae. The patient was a previously healthy 52-year-old female. All serial isolates were identified as M. simiae by multi-locus sequencing analysis, based on hsp65, rpoB, 16S-23S rRNA internal transcribed spacer, and 16S rRNA fragments. A chest radiography revealed deterioration, and the follow-up sputum cultures were persistently positive, despite combination antibiotic treatment, including azithromycin, ethambutol, and rifampin. To the best of our knowledge, this is the first confirmed case of a lung disease caused by M. simiae in South Korea.
( Won Suk Cheong ),( Sang Ryoung Kim ),( Hyun Suk Oh ),( Sang H Lee ),( Kyung Min Yeon ),( Chung Hak Lee ),( Jung Kee Lee ) 한국미생물 · 생명공학회 2014 Journal of microbiology and biotechnology Vol.24 No.1
Quorum quenching (QQ) with a microbial vessel has recently been reported as an economically feasible biofouling control platform in a membrane bioreactor (MBR) for wastewater treatment. In this study, a quorum quenching MBR with a ceramic microbial vessel (CMV) was designed to overcome the extremely low F/M ratio inside a microbial vessel. The CMV was prepared with a monolithic ceramic microporous membrane and AHLdegrading QQ bacteria, Pseudomonas sp. 1A1. The “inner flow feeding mode” was introduced, under which fresh feed was supplied to the MBR only through the center lumen in the CMV. The inner flow feeding mode facilitated nutrient transport to QQ bacteria in the CMV and thus enabled relatively long-term maintenance of cell viability. The quorum quenching effect of the CMV on controlling membrane biofouling in the MBR was more pronounced with the inner flow feeding mode, which was identified by the slower increase in the transmembrane pressure as well as by the visual observation of a biocake that formed on the used membrane surface. In the QQ MBR with the CMV, the concentrations of extracellular polymeric substances were substantially decreased in the biocake on the membrane surface compared with those in the conventional MBR. The CMV also showed its potential with effective biofouling control over long-term operation of the QQ MBR.
Molecular Marker Analysis for Resistance of Soybean Cultivars to Soybean Cyst Nematode
Chung, Jong-Il,Park, Won-Gyeong,Park, Min-Jung,Ko, Mi-Suk The Korean Society of Crop Science 2002 Korean journal of crop science Vol.47 No.4
Soybean cyst nematode (Heterodera glycines Ichinohe; SCN) is an important soybean pest and the use of resistant cultivars is the effective method to reduce or eliminate SCN damage. However, breeding for SCN resistance is difficult and expensive by the oligogenic nature of the resistance and genetic variability in the pathogen. Fortunately, SCN resistance loci, rhg1 and Rhg4 are generally accepted as a necessity for the development of resistant genotypes using any source of resistance. In this study, resistance of 44 Korean soybean cultivars to SCN was tested using two molecular markers. Seonheukkong and Pokwangkong were the homozygous to rhg1 locus. Seven cultivars were susceptible to SCN based on Satt309 marker linked rhg1 locus. All Korean cultivars estimated in this study were recessive homozygous to Rhg4 locus and were susceptible in the PCR reaction using primer 548/563 linked to the Rhg4 locus conferring resistance to SCN race 3. Among 44 cultivars estimated, seven cultivars were susceptible to SCN in both Satt309 and primer 548/563 markers. Based on both Satt309 and primer 548/563 markers, there is no resistant cultivar to SCN in Korea. Therefore, SCN resistant cultivars need to be developed in the future. These two markers can be used for improving SCN resistant cultivars.