한강 수질 보전을 위한 생태학적 조사 연구-팔당호를 중심으로

차철환,김동민,엄규백,김영환,이영조,문재훈,손경애,김성자,이상택,Cha, Chul-Whan,Kim, Dong-Min,Um, Kyu-Paik,Kim, Young-Hwan,Lee, Young-Jo,Moon, Jae-Hoon,Sohn, Kyoung-Ae,Kim, Seong-Ja,Lee, Sang-Taik 한국상하수도협회 1977 水道 Vol.11 No.-

Changes of Health Seeking Bebavior of Rural Residents Induced by the Primary Health Care Project

차철환,Cha, Chul-Whan 한국농촌의학.지역보건학회 1988 농촌의학·지역보건 Vol.13 No.1

최근의 경제성장과 생활수준의 향상은 농촌주민의 보건 형태에도 큰 변화를 유발하고 있다. 10여년전과 달리 산전관리나 영유아 예방접종은 거의 대부분의 농촌주민들도 자발적으로 시행하고 있다. 본 연구에 의하면 일차보건사업지역이나 대조 지역간에 이측면에서 큰 차이가 없다. 따라서 일차보건사업은 과거의 알차적인 보건써어비스의 확대라는 고전적 목표에서 써비스의 향상과 써비스 조직의 개선으로서의 새로운 사업전개가 필요하다.

Changes of Health Seeking Bebavior of Rural Residents Induced by the Primary Health Care Project

Chul-Whan Cha(차철환) 한국농촌의학 지역보건학회 1988 농촌의학·지역보건 Vol.13 No.1

환경오염이 건강에 미치는 영향

차철환 ( Chul Whan Cha ) 대한보건협회 1983 대한보건연구 Vol.9 No.1

우리나라에서의 농약사용이 건강 및 환경에 미치는 문제

차철환 ( Chul Whan Cha ) 대한보건협회 1985 대한보건연구 Vol.11 No.1

아연(亞鉛)과 철분(鐵分) 동시투여(同時投與)가 백서(白鼠)의 장기내(臟器內) 연함량(鉛含量)에 미치는 영향(影響)

엄형택,안동빈,차철환,Ohm, Hyung-Taek,Song, Dong-Bin,Cha, Chul-Whan 대한예방의학회 1983 예방의학회지 Vol.16 No.1

In order to study the effects of iron and zinc on the lead poisoning of rats, lead with iron and zinc, or lead alone were administered orally to a total of 98 adult rats of Sprague-Dawley Species. The concentrations of lead, zinc, and iron were measured by atomic absorption spectrophotometer at every 20 days intervals of 20th, 40th, 60th, 80th and 120th day as a final measurement. Those datas were analysed and compared with those of control groups. The results were summarized as follows; 1. The concentration of lead in blood, bone. and liver tissues kept increasing in case of lead exposure group whereas it started decreasing at 60-80th day when concentration of zinc started increasing in case of combined exposure group. However, in kidney tissue, the concentration of lead in combined exposure group kept increasing up to the end of observation showing special high concentration at the final measurement at 120th day. 2. Concentration of zinc in blood and liver tissues had increased from 60-80th day in case of combined exposure group. 3. Concentration of iron in blood showed decreasing from $44.15{\pm}9.67\;to\;32.44{\pm}2.69{\mu}g/ml$ in case of lead exposure group, whereas it showed constant level of $47.50{\sim}45.65{\mu}g/ml$. However, in liver tissue it kept constant as control did from 40th to 60th days, but from 100th day on it started increasing to show much higher concentration than control.

일부 근로자들의 고혈압치료형태에 관한 연구

이은일,김순덕,차철환,Lee, Eun-Il,Kim, Soon-Duck,Cha, Chul-Whan 대한예방의학회 1986 Journal of Preventive Medicine and Public Health Vol.19 No.2

Hypertension is one of the most well known risk factors for cerebrovascular or coronary heart disease and is a major public health problem. Early detection and treatment of hypertension are essential, but the compliance of treatment on hypertension is not easy to achive. Hypertensive workers are being detected by the annual screening under the Labour Standard Law in Korea but the solidified control system for them is not existing. This study about workers 'Motive-Belief-Action in non-drug and drug treatment of their hypertension would be worthwhile to interpret how the workers actually behave in coping with hypertension, and also would be advisable to construct the follow-up program in Korea. In the field research process two criteria were used to select sample group. The first criterion included the workers who were screened to be hypertensive with their blood pressure above 160/95 in this survey. The second one was used to classify study-group respondents who had known their hypertension by successive annual screening. From such criteria a total of 156 male workers were sampled in 21 industries, the author interviewed them using the structured questionnaire which consisted of Belief-Motive-Action items about non-drug and drug treatment for hypertension with open-ended question on symptom of hypertension. The summary is as follows: 1) Sixty-one percent of respondents had ever checked their blood pressure somewhere besides the annual screening. 2) Most respondents(97.2%) complained no symptoms of hypertension at all. 3) Belief level of non-drug treatment was relatively high (82.1%-64.7%), but motive(55.1%-28.2%) and action(38.5%-16.7%) levels were low. 4) Belief level of drug treatment was relatively lower than that of non-drug treatment, blue collar workers showed higher artier level of drug treatment than white collar workers, and correlation coefficient between belief and motive on drug treatment was lower in group of not-recognizing their family history of hypertension than recognized group. Such findings indicated that belief on drug treatment of hypertensive workers would be problematic. 5) White collar workers showed significant lower correlation coefficients between Motive and Action of salt restriction, restriction of fatty diet and relaxation than blue collar workers. 6) Mild hypertension group showed low levels of Motive and Action of non-drug treatment(salt restriction, restriction of fatty diet and relaxation) and also showed low correlation coefficient between Belief and Motive of above non-drug treatment.

모 사업장 포장부서 근로자들에서 발생한 수근터널증후군에 대한 조사연구

이원진,이은일,차철환,Lee, Won-Jin,Lee, Eun-Il,Cha, Chul-Whan 대한예방의학회 1992 예방의학회지 Vol.25 No.1

반복작업에 종사하는 모 사업장 포장부서 근로자 42명을 대상으로 수근터널증후군에 대한 중상, 이학적 검사 및 근전도 검사를 1991년 11월부터 1992년 3월까지 실시하였다. 양손 모두에서 근전도상 이상소견을 보인 경우가 4명, 오른쪽 손에만 이상소견을 보인 경우가 4명 그리고 왼손이 1명 등 총 9명으로서 21.4%의 높은 유병률을 나타내었다. 임상중상은 전체 42명중 66.7%에 해당되는 28명에서 나타났다. Tinel과 Phalen sign 등 이학적 검사에서 이상소견을 보인 경우는 14명으로 전체의 33.3%를 차지하였다. 그리고 키와 임신 횟수를 제외한 수근터널증후군에 대한 다른 일반적 위험요인은 환자군과 비환자군에서 유의한 차이는 없었다. 근전도 검사를 기준으로 하였을 때 임상증상에 대한 민감도는 0.89, 특이도는 0.39이었고 Tinel sign에서는 각각 0.33, 0.88 그리고 Phalen sign에서는 0.56, 0.82 등이었다. 임상증상이 있고 Tinel과 Phalen sign에서 어느 하나 양성으로 나타나는 것을 선별기준으로 하였을 경우의 민감도와 특이도는 0.57, 0.76이었다. The carpal tunnel syndrome is one of the most common peripheral nerve entrapment syndromes. The typical symptoms are pain, numbness and paresthesia in the median nerve territory of the hand. Recently, it is widely recognized that occupational factor is regarded as the important cause of the carpal tunnel syndrome. Clinical study is performed in the 42 female workers who is repetitively working at packing department in a rayon manufacturing factory from November 1991 till March 1992. The study included a questionnaire, physical examinations, and the neurophysiological test. The summary of the results obtained was as follows : 1. Among 42 packing workers, 9 workers(21.4%) were diagnosed as carpal tunnel syndrome by electromyography. The affected side was bilateral in 4 workers(9.5%), right in 4 workers(9.5%), and left in one worker(2.4%). 2. Among 42 subjects, 28 workers(66.7%) complained the clinical symptoms related to carpal tunnel syndrome, 11 workers(26.2%) showed positive Phalen sign, and 7 workers(16.7%) showed positive Tinel sign. 3. Researchers regard electromyographic finding as the gold standard for diagnosis of carpal tunnel syndrome. The sensitivity and specificity of the clinical symptoms to diagnose the carpal tunnel syndrome were 0.89, 0.39 respectively. If the carpal tunnel syndrome is diagnosed by the combination of the positive findings of the symptoms and the physical examinations, either Tinel or Phalen sign, the sensitivity and specificity were 0.67 and 0.76 respectively. Considering above results, though this small number of workers is not adequate for epidemiologic conclusions, carpal tunnel syndrome seems to be an important occupational disorder among packing workers in a rayon manufacturing factory.

카드뮴과 Methionine 동시투여(同時投與)가 Mouse장기내(藏器內)의 카드뮴 함량(含量)과 Alkaline Phosphatase활성도(活性度)에 미치는 영향(影響)

유경수,배은상,차철환,You, Kyung-Soo,Bae, Eun-Sang,Cha, Chul-Whan 대한예방의학회 1983 예방의학회지 Vol.16 No.1

This research is to examine the detoxication effect of methionine on cadmium intoxication For this purpose, this paper provides an analysis of the data on the groups of mice (ICR), one group of mice treated with 40 ppm of cadmium only. and other groups of mice combined-treated with cadmium and 0.1%, 0.25%, 0.5% and 1% methionine. After breeding for 40 days, the data on the growth of mice, changes in activation of alkaline phosphatase in blood, and the cadmium content in the liver and kidney, are analysed. The results were as follows: 1) The growth-rate of mice, in the cadmium only injected group, was declined by 9% in comparison with the control group after 40 days. But the two groups of cadmium with 0.5% and 1% methionine showed the rise of 9% ana 14% respectively above the growth-rate of the control group. The results from the groups of cadmium with 0.1% and 0.25%, methionine were similar to that from the cadmium only injected group. 3) Changes in activation of alkaline phosphatase in blood decreased to 86.45% in the cadmium only injected group behind the 100% activation of the control group. The groups of cadmium with 0.1% and 0.25% methionine showed no difference with the former group. But the groups of cadmium with 0.5% and 1% methionine recovered to the 93.14% and 96.08% of activation respectively. 3) The mean content of cadmium in the liver was $0.028{\pm}0.001{\mu}g/g$ in the control group. The cadmium only injected group showed the mean cadmium content of $2.80{\pm}0.62{\mu}g/g$ in the liver, which was similar to $2.82{\pm}1.03{\mu}g/g$ in the group of cadmium with 0.1% methionine, and $2.56{\pm}0.77{\mu}g/g$ in the group of cadmium with 0.25% methionine. But the groups of cadmium with 0.5% and 1% methionine showed the reduction of cadmium contents in the liver to $1.84{\pm}0.56{\mu}g/g$ and $1.74{\pm}0.35{\mu}g/g$ respectively. In the kidney, the groups of cadmium with 0.1%, 0.25% and 0.5% methionine shelved the similar cadmium content to the group treated with cadmium only. But the group of cadmium with 1% methionine showed a small increase to $4.13{\pm}1.00{\mu}g/g$ in comparison with the group treated with cadmium only. This analysis proves that the mobility and diffusion of cadmium in tile tissues advance faster ill the group treated with cadmium and methionine than in the group treated with cadmium only.

이황화탄소에 폭로된 근로자들의 말초신경병증에 관한 연구

김대성,김순덕,차철환,Kim, Dae-Seong,Kim, Soon-Duck,Cha, Chul-Whan 대한예방의학회 1993 예방의학회지 Vol.26 No.2

Neurotoxicity in the workplace may occur with exposure to scores of chemicals. Although large acute outbreaks of the occupational neurological disease are rare, the incidence of occupational neurotoxicity in its subtler aspects is unknown. A working knowledge of both the major occupational neurotoxic solvents and the tools used by cliniical neurologists and neurotoxicologists to evaluate neurotoxicity in working populations is a necessity fur the occupational physician. To investigate the effects of carbon disulfide($CS_2$) on the peripheral nerve system using the nervous conduction study, 105 male workers working in the spinning room of a viscose rayon factory were examined and compared with a sex and age matched, unexposed 105 male controls using t-test analysis. 72.4% of $CS_2$-exposed workers complained of neurological symptoms, and the abnormal cases in nerve conduction study were 48.6%. The abnormal cases of nerve conduction study increased in number according as the age and duration of exposure increased. In this study, asymptomatic workers were confirmed to have subclinical neuropathy by nerve conduction study. Also as there were abnormal cases even in its duration of exposure below 4 years, nerve conduction study turned out to be ways of discovering of early peripheral neuropathy. In nerve conduction study, the amplitude, velocity, F-wave latency and H-reflex of the motor and sensory nerves in both upper and lower extremities were significant different between $CS_2$-exposed workers and the controls. From the pathological viewpoint, both segmental and axonal degenerations were assumed in this study.