건강칼럼 - 신종인플루엔자 대유행후단계(post-pandemic period)에서의 사업장 수준의 인플루엔자 대응을 위한 권고

곽우석,Gwak, U-Seok 대한산업보건협회 2010 산업보건 Vol.270 No.-

Behavior of Juvenile Black Sea Bass, Centropristis striata (Linnaeus) on Oyster Reefs

곽우석 한국어류학회 2008 韓國魚類學會誌 Vol.20 No.3

The substrate preferences of juvenile black sea bass Centropristis striata (Linnaeus) was tested in a circular tank (1.5 m diameter×0.4 m deep) divided into two equal areas of oysterrelated (oyster reef and whole oyster shell) and sand substrates. All trials were video taped for 20 min. Tapes were viewed on a monitor and locations of all fish recorded and timed with respect to substrate. Mean±SE times on oyster shell were 18.1±2.0 min (1-fish trial-1) and 17.5±1.7 min (5-fish trial-1). Mean±SE times on sand were 2.0±1.0 min (1-fish trial-1) and 2.5±1.7 min (5-fish trial-1). Black sea bass juveniles showed a significant preference for oyster reef and shell over sand substrate in single-fish trials (paired t-test, P/0.05) and also in five-fish trials (paired t-test, P/0.05). Mean±SE times under oyster reefs were 16.6±2.0 min in single-fish trials and 10.7±2.3 min in five-fish trials. Mean numbers of movements among oyster reefs were 1.1±1.0 in single-fish trials and 11.5±3.1 in fivefish trials. Fish spent significantly less time under oyster reefs in five-fish trials, compared to single-fish trials (paired t-test, P/0.05) and they moved more frequently in five-fish trials than in singlefish trials (paired t -test, P/0.05). Significantly higher competition for a refuge in five-fish trials may induce less time under oyster reefs as well as frequent movement of black sea bass juveniles on shell substrate.

뇌·심혈관질환 예방을 위한 사업장 지원 프로그램의 단기효과 분석

곽우석,원종욱,이정배,이명숙,강은주,노재훈 大韓産業醫學會 2009 대한직업환경의학회지 Vol.21 No.1

목적 뇌 심혈관질환은 주요한 사망원인이며 우리나라 산업재해 보상에 있어 중요 부분을 차지하고 있다 따라서 한국산업안전보건공단은 2000년도부터 지역 산업보건기관을 통해 많은 사업장에 뇌 심혈관질환 예방 프로그램을 지원해왔다 본 연구는 이 프로그램이 근로자의 뇌 심혈관질환 발병위험도 개선에 미치는 단기영향을 평가하고자 수행되었다 방법 2007년도 집중관리 프로그램 대상자 중 전후 발병위험도 평가가 가능했던 5,902명(53.3%)을 대상으로 혈압 콜레스테롤 비만도 및 발병위험도를 전후 비교하였다 발병위험도 평가는 KOSHA CODE H-11-2004 지침을 사용하였다 결과 평균 수축기 및 이완기 혈압이 4.9 mmHg 3.1mmHg 감소하였으며 총콜레스테롤과 비만도(BMI)는 각각 8.4 g/dL 0.1 kg/㎡ 감소하였다 흡연율은 6.0% 감소하였으며 규칙적인 운동 시행률은 23.1% 증가하였다 전체적인 발병위험도 개선율은 49.1%였다 결론 국가 지원의 뇌 심혈관질환 예방 프로그램은 단기적으로 좋은 성과를 나타냈다 향후 연구에서는 사업장 단위의 장기적인 영향과 비용-효과에 대한 분석이 이루어질 필요가 있다 Objectives Cardiovascular disease is the leading cause of death and a major source of workers' Compensation claims in Korea Since 2000 the Korea Occupational Safety and Health Agency (KOSHA), working through local occupational health institutions has supported cardiovascular disease prevention programs at a number of companies in Korea The purpose of this study was to assess the short term effects of this effort Methods A total of 11,077 workers at risk were enrolled in the workplace cardiovascular disease prevention program and 5,902 workers (53.3%) completed the 1-year course during 2007 The program consisted of a medical checkup and health counseling for the workers by occupational health nurses The guidelines for this prevention program were adopted from KOSHA Code H-11-2004 To determine the program's effectiveness the workers risks for cardiovascular disease were assessed before and one year after completion of the program Results The intervention led to significant reductions in the mean systolic and diastolic blood pressures of 4.9 mmHg and 3.1 mmHg respectively Mean total cholesterol and BMI were also reduced significantly by 8.4 g/dl and 0.1 kg/㎡ The rate of smoking was decreased by 6.0% and the percentage of workers engaging in regular exercise was increased by 23.1% of the 3,530 workers with the low risk and above the overall cardiovascular risk was improved in 1,734 (49.1 %) of them Conclusions The cardiovascular disease prevention program supported by the Korea Occupational Safety and Health Agency reduces cardiovascular diseases risks among workers and may improve the health status of workers in Korea

우리나라 남해와 서해에서 채집된 대구의 계수 형질 비교

곽우석,주형운 한국어류학회 2017 韓國魚類學會誌 Vol.29 No.4

The morphomeristic features of Gadus macrocephalus was compared using fish samples from Jinhae Bay in the South Sea and Boryeong in the Yellow Sea, Korea. In total, 332 individuals were sampled from 2 locations to investigate the differences in the morphomeristic features and determine applicability of it as a means of stcok discrimination of G. macrocephalus. No significant differences in the number of vertebrae, 1st to 3rd dorsal-fin soft rays, 1st and 2nd anal-fin soft rays, pectoral-fin soft ray, pelvic-fin soft ray, and gill raker were found between two populations from Jinhae Bay and Boryeong. The results of present study revealed that morphomeristic features of G.macrocephalus was not applicable for stock discrimination. 이번 연구는 남해 진해만과 서해 보령에서 채집된 대구 간의 계수 형질 차이를 확인하기 위해 수행하였다. 연구에 사용된 시료는 2006년 12월부터 2008년 2월까지 경남 거제시 장목면 외포 위판장에서 210개체, 2007년 충남 보령시 수협 위판장에서 122개체를 채집하였다. 계수 형질인 대구의 척추 골수, 제1등지느러미 연조수, 제2등지느러미 연조수, 제3등지느러미 연조수, 제1뒷지느러미 연조수, 제2뒷지느러미 연조수,가슴지느러미 연조수, 배지느러미 연조수, 새파수에서 두 해역간 유의한 차이가 없었다. 이번 연구에서 대구의 계수 형질 분석 결과 진해만 대구와 서해 대구는 계수 형질에 있어서 차이가 없는 것으로 나타났다. 결과적으로 대구의 경우, 계수 형질은 계군 분석을 위한 분류 형질로 적합하지 않은 것으로 판단된다.

뇌ㆍ심혈관질환 예방을 위한 근로자 건강증진 프로그램의 단기효과 분석

곽우석,이정배,이명숙,강은주,노재훈,원종욱 대한산업의학회 2008 대한직업환경의학회 학술대회 논문집 Vol.41 No.-

Genetic Diversity and Population Genetic Structure of Korean Black Scraper Thamnaconus modestus in Korea and Japan Based on the mtDNA Marker

곽우석,Roy Animesh 한국해양과학기술원 2021 Ocean science journal Vol.56 No.3

Thamnaconus modestus is a commercially important species that is widely distributed in the Northwest Pacific region. To investigate the genetic diversity, demographic history, and population structure, 84 individuals were collected from two locations in Korea (Geomundo and Jumunjin) and one location in Japan (Wakasa Bay). Analysis of the mitochondrial DNA control region sequence of 373 base pairs from the 84 individuals revealed 39 haplotypes with 50 polymorphic sites. The haplotype diversity and nucleotide diversity of different populations ranged from 0.973 (0.018) to 0.981 (0.013) and from 0.020 (0.011) to 0.021 (0.011), respectively. Phylogenetic analysis revealed three distinct clades of which two were large (clade 1 and clade 2) and one was small clade (clade 3). However, there was no significant geographical clustering of the haplotypes according to the sampling locality. Demographic analysis suggested that both clades experienced Late Pleistocene population expansion. The pairwise FST and AMOVA analysis were insignificant among the populations investigated. This indicated high gene flow among the populations of Korea and Japan. The dispersal capacity of the larvae and juveniles by ocean currents and migration of adult individuals could explain the genetic homogeneity. Insufficient time to accumulate genetic variation might be another reason for the lack of genetic structure.

Low Genetic Diversity and Shallow Population Structure of the Japanese Halfbeak Hyporhamphus Sajori Revealed from Mitochondrial DNA in the Northeast Asia

곽우석,Qun Zhang,Animesh Roy 한국어류학회 2019 韓國魚類學會誌 Vol.31 No.4

This study was conducted to know the genetic diversity and population structure of Japanese halfbeak (Hyporhamphus sajori) in the Northeast Asia, using mitochondrial DNA control region. In the present study, a total of 70 individuals were collected from three locations of China (Liaoning), Korea (Tongyeong) and Japan (Wakasa Bay), and 47 individuals sequences from three locations of Japan (Wakasa Bay, Toyama Bay and Mikawa Bay) were downloaded from genbank. A total of 7 haplotypes were identified with 7 polymorphic sites from 358 bp length sequences. Haplotype and nucleotide diversity were very low and ranged from 0 to 0.295±0.156 and 0 to 0.0009±0.0011, respectively. Ancestral haplotype was shared by 94% individuals. An extremely low haplotype and nucleotide diversity, and starlike minimum spanning tree indicated that the species have undergone a recent population expansion after bottleneck. Pairwise FST values were low and there was no significant differences among populations suggesting a gene flow among the populations. Dispersal of the eggs with the aid of drifting seaweed and currents might be the major responsible factor for the genetic homogeneity.

방류어에 대한 분자생물학적 접근

곽우석 한국수산과학회 양식분과 2003 韓國養殖 Vol.15 No.2

2001년 제25회 Annual Larval Fish Conference를 다녀와서…

곽우석 한국수산과학회 양식분과 2001 韓國養殖 Vol.13 No.2

일개 배터리 제조업체 근로자들의 안구건조증 증상정도와 관련요인

곽우석,노상철,채유미 대한직업환경의학회 2014 대한직업환경의학회 학술대회 논문집 Vol.2014 No.11