• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2003.04a
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• pp.409-412
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• 2003

본 연구는 호소내 오염된 퇴적물 처리를 위한 전처리 장치로 Hydrocyclone의 이용가능 성을 평가하는 실험이다. 외국의 선행 연구자인 Rietema의 표준 규격을 참고하여 제작된 Hydrocyclone을 이용하여 기흥저수지 퇴적물로 실험을 실시하였다. 실험결과 입자에 따른 오염 도 평가에서는 입자가 작을수록 포함된 오염물의 농도가 높은 것으로 나타났다. 또한 퇴적물을 이용한 장치특성 및 운전조건 변화에 따른 실험에서 공급속도가 빠르고, 공급시료의 농도가 낮으며, 장치의 크기가 작을수록 입자별 분리효율이 높았다.

• 산업보건소식
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• no.42
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• pp.36-43
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• 1987

이 번역을 함에 있어 연중독 문제가 고전적으로 산업의학자들의 큰 관심사의 하나였으며 최근에는 우리 나라에서 아직도 상상을 초월하는 연오염작업장들에서 중독환자들이 발생하고 있는 실정인것으로 안다. 지난 9월 이 원문을 입수한지 6개월이 지난 요즘 우리 대한산업보건협회가 새로운 도약을 위한 근로자 건강 진단에서 보다 충실한 작업환경 조사와 유해작업장 근로자의 특수건강진단에 도움이 되기를 바라며, 완전하지 않은 번역을 하게 됨을 미안하게 생각합니다. 회원 여러분의 참고 있으시기를 바라며 오역, 기타 잘못된 점들이 있으면 알려주시기 바라면서 저농도의 연폭로시 발생할 수 있는 생체반응들에 대하여 우리 나라 여러 선후배 선생님들의 일고의 도움이 되기를 바랍니다.

• 산업보건소식
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• no.43
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• pp.49-54
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• 1987

이 번역을 함에 있어 연중독 문제가 고전적으로 산업의학자들의 큰 관심사의 하나였으며 최근에는 우리 나라에서 아직도 상상을 초월하는 연오염작업장들에서 중독환자들이 발생하고 있는 실정인것으로 안다. 지난 9월 이 원문을 입수한지 6개월이 지난 요즘 우리 대한산업보건협회가 새로운 도약을 위한 근로자 건강 진단에서 보다 충실한 작업환경 조사와 유해작업장 근로자의 특수건강진단에 도움이 되기를 바라며, 완전하지 않은 번역을 하게 됨을 미안하게 생각합니다. 회원 여러분의 참고 있으시기를 바라며 오역, 기타 잘못된 점들이 있으면 알려주시기 바라면서 저농도의 연폭로시 발생할 수 있는 생체반응들에 대하여 우리 나라 여러 선후배 선생님들의 일고의 도움이 되기를 바랍니다.

• Environmental engineer
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• s.171
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• pp.46-51
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• 2000

한강, 낙동강등 주요수계의 수질을 개선하기 위해 정부는 일련의 특별법 제정을 통해 수질오염 총량관리제를 도입하여 시행할 예정이다. 총량관리제는 기존의 사후처리 및 농도규제에 근거한 수질관리의 한계를 극복하고 실질적인 수질개선을 달성할 수 있다는 점에서 일본 및 미국에서는 이미 오래 전부터 시행해오고 있다. 한강, 낙동강 수계의 총량관리 시행체제는 이러한 외국사례를 참고하고 해당지역 정서와 사회경제적인 여건 등의 지역특수성을 반영하여 개발되었다. 즉, 한

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2006.11a
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• pp.74-75
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• 2006

• Korean Journal of Clinical Laboratory Science
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• v.50 no.3
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• pp.253-260
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• 2018

With the growing prevalence of dyslipidemia in adolescents, its early detection and management is becoming increasingly important. This study overviewed the fasting lipid concentration distribution of adolescents according to the sex and age, and reviewed the percentile of its reference interval. This study targeted 2,713 adolescents aged between 10 and 19 (1,436 boys, 1,275 girls) based on the data from 2013 to 2016, Korean Health and Nutrition Examination Survey. The mean fasting lipid concentration of total cholesterol, LDL cholesterol, HDL cholesterol, non-HDL cholesterol, and triglyceride of girls was higher than those of boys. Although the $95^{th}$ percentile of the cholesterol value was 200 mg/dL in boys, which was equivalent to the diagnosis criterion, the mean value of girls was 208 mg/dL, staying between the $90^{th}$ and $95^{th}$ percentiles. The $95^{th}$ percentiles of the LDL cholesterol, non-HDL cholesterol, and triglyceride value were 123, 148, and 147 mg/dL in boys, respectively, and 131, 149, and 139 mg/dL in girls, respectively. Most of the criteria of dyslipidemia were at the proper level, within the $90^{th}$ and $95^{th}$ percentile. While the criteria of LDL cholesterol (130 mg/dL) was higher in boys, the triglycerides was higher in girls. In conclusion, criteria more suitable to Korean adolescents will need to be established with further studies.

• Journal of Veterinary Clinics
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• v.23 no.2
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• pp.111-113
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• 2006

Normal reference values for hematological parameters were evaluated using 85 male Elk deer reared in Korea. The reference interval estimated were 6.01-9.93 (${\times}10^6/mm^3$) for the red blood cell count, 10.90-19.70 (g/dl) for the hemoglobin concentration, 43.10-76.40 (%) for the hematocrit value, and 2.60-7.68 (${\times}10^6/mm^3$) for the total white blood cell count. Our estimates were compared with previously reported values for these parameters in Korea and other countries.

• Korean Journal of Clinical Laboratory Science
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• v.50 no.1
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• pp.1-10
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• 2018

During early pregnancy, before the development of a functioning thyroid gland, thyroid stimulating hormone (TSH) is a very sensitive marker of thyroid dysfunction during pregnancy. Normal values have been modified during gestation with a downward shift. The fetus is influenced by the TSH supplied by the mother. TSH and free thyroxine (FT4) concentrations vary during pregnancy and conventional units can vary between laboratories. A downward shift of the TSH reference range occurs during pregnancy, with a decrease in both the lower and upper limits of maternal TSH, relative to the typical non-pregnant TSH reference range. Each laboratory produces its own reference TSH and FT4 concentrations because there are many different assays that yield different results in pregnancy. Therefore, automated immunoassays used for serum FT4 analysis are still used widely, but the important considerations discussed above must be noted. The use of population-based, trimester-specific reference ranges remains the best way to handle this issue The slight downward shift in the upper reference range of TSH occurring in the latter first trimester (7~12 weeks) of pregnancy, typically not observed prior to 7 weeks. Their use indicates high or low levels in a quantitative manner independent of the reference ranges. These data highlight the importance of calculating population-based pregnancy-specific thyroid parameter reference intervals. A precision medicine initiative in this area will require the collection and analysis of a large number of genetic, biological, psychosocial, and environmental variables in large cohorts of individuals. Large prospective randomized controlled trials will be needed to resolve these controversies.

• Clinical and Experimental Pediatrics
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• v.49 no.1
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• pp.18-23
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• 2006

Purpose : The reliability of hair mineral analyses regarding nutritional status, environmental exposure or diseases is controversial. The aim of this study was to determine the normal reference range of hair mineral concentration of Korean children. Methods : We examined hair mineral concentrations of 223 children(3-12 yrs old, 110 boys, 113 girls, mean age $8.8{\pm}2.2$ yrs old) living in the northern area of Seoul. The trace elements including six toxic elements(Al, As, Cd, Ba, Hg, Pb) and 11 nutritional elements(Na, Mg, P, K, Ca, Cr, Mn, Fe, Cu, Zn, Se) were analyzed by inductive coupled plasma mass spectrometry(ICP-MS). Results : The mean concentrations of Ca and Mg were higher in girls than in boys. The mean concentrations of Cd, Pb and Cr were higher in boys than girls. The Zn, Ca, Mg, Cu and Hg levels in hair samples were positively correlated with increasing age. The Zn levels of the Korean children's hair samples appear to be lower than that of other countries' reference values. Conclusion : There are considerable differences in hair mineral concentrations by age, sex and race. Additional research is needed to establish Korean reference values, and to evaluate the usefulness of hair mineral analyses as a screening tool for nutrition- and environment-related childhood diseases.

• Journal of Radiation Protection and Research
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• v.37 no.4
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• pp.167-172
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• 2012

Jeju Island is a significant area as a reference site of in situ gamma spectrometry because there are a number of open spaces which includes $^{137}Cs$ above a certain level. In this paper, the pasture within the Hallasan National Park was selected as one of the open spaces of Jeju Island. The homogeneity of $^{137}Cs$ at the site was assessed by analysis of variance on count and by radioactivity concentration obtained through in situ gamma spectrometry. For this purpose, the count of a total of 79 points at 3 sites were measured with less than count uncertainty of 5% for 2000 seconds. In the results of the analysis of variance, the 2 sites were homogeneous, and the remaining 1 site can be specified to be homogeneous through the adjustment of measuring range. The distribution of radioactivity concentration calculated by in situ gamma spectrometry were $53.7{\sim}93.2Bq\;kg^{-1}$, $30.5{\sim}61.0Bq\;kg^{-1}$ and $48.8{\sim}102Bq\;kg^{-1}$ at each site.