• 제목/요약/키워드: analysis

검색결과 310,625건 처리시간 0.274초

병원 구성원들의 직종별 조직몰입의 영향요인에 관한 연구 (Factors affecting the Organizational Commitment of Industrial Accident Hospital Employees by Job Category)

  • 방용주;하호욱;손태용
    • 한국병원경영학회지
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    • 제7권4호
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    • pp.24-56
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    • 2002
  • The purpose of this study was to analyze the characteristics of socio-demographic, organizational culture, organizational conflict and organizational commitment, and to examine the interrelation of influential factors in the organizational commitment. The data for this study were collected through a self-administrated survey with a structured questionnaire to 1,027 subjects from several medical doctor staff members, nursing staff members, administration staff members, pharmacist, and technical expert of eleven hospitals. The data were collected by self-reporting questionnaire from July 29 to September 7, 2002. In this analysis frequency test, t-test, ANOVA, multiple regression were used. The main results of this research is as following; 1. According to socio-demographic characteristics the respondents' level of the organizational commitment was higher in a administration staff members than others, for males than females, and for employees aged more than forty, as working for longer time, and as higher level of the working position. 2. According to the organizational culture characteristics the progressive culture, affiliative culture, and task-focused culture among many types of organizational culture were moderately and positively correlated with the level of the organizational commitment while the hierarchical culture was negatively correlated. 3. According to the organizational conflict characteristics as the respondents who got less conflict experience in the organization, their level of the organizational commitment was higher. And, technical conflict experiences were expressed greater than hierarchical conflict experiences. 4. According to the job satisfaction characteristics as his or her satisfaction that is about the promotion, working itself, salary, and fellowship in the organizational was higher, the level of the organizational commitment was higher. The most important factor of the satisfactions was the fellowship among the respondents while the level of job satisfaction for the promotion and salary was average. 5. Overall, according to the result of Multiple Regression as older age and longer working hours, the level of the organizational commitment was higher and as a higher level of the satisfaction for the promotion, working itself, salary, and fellowship in the organization, it caused more effective factors for the organizational commitment. 6. According to the result of Multiple Regression for the doctor staff members in special hospitals rather than general hospitals the hierarchical culture and task focused culture was positively correlated with the satisfaction of working itself while hierarchical conflict factors in the organizational conflict characteristics was negatively correlated with the organizational commitment. For the nursing staff members the affiliative culture and the job satisfaction for the promotion, working itself, salary, and fellowship were positively correlated with the organizational commitment. For the administration staff members as the job satisfaction for the fellowship was positively correlated with the organizational commitment. For medical and pharmacy staff members as more working experience, correlation with the organizational commitment was positive. Besides, as he or she has a high perception of the affiliative culture, it caused statistically more effective factors for the organizational commitment. For the skill and technicians, male worker expressed greater organizational commitment in the organization than female worker. And also older age along with higher education also showed higher organizational commitment. Moreover, the job satisfaction for the fellowship was positively correlated with the organizational commitment. This study identified the major effective factors of the organizational commitment and analyzed the differences among the job category. In that respect, it is significant for the study to be able to provide a reference for managing hospital of industrial accident and organizational development. However, this study has a problem, which is not to identify a valuable model for examining the relationship between organizational factors such as organizational culture, conflict, satisfaction, and commitment. Therefore, further study is needed and strengthened in the field of organizational commitment for hospital for industrial accident.

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가정생활 주기에 따른 가계변동에 관한 연구 (A Study on the Change of household-Economy incidental to the Family Life Cycle.)

  • 서병숙;임혜경
    • 가정과삶의질연구
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    • 제2권1호
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    • pp.35-55
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    • 1984
  • This study aims to present basic data for a reasonable home management through investigating the change of home economy conditions incidental to the family life cycle, also through analyzing the effect of socio-anthropological variables on the family-life cycle. The data investigation using the questionnaires method was conducted on housewives in Seoul as the central census tract. Housewives as the subject of investigation were chosen by the method of the purpose-sampling in consideration of the regional differences and the socio-economical strata. Nine hundred and forty questionnaires were distributed to housewives but seven hundred questionnaires were collected. Only five hundred and ten questionnaires of them were analyzed in this study. The frequency and the percentage of collected data, first of all, were founded in order to grasp the general characteristics of the subject of investigation. To classify the stage of family life cycle, the correlations of the classifying factors among each group were examined x2 Test and One-Way ANOVA were applied to explore the differences among each stage of the change of household-economy. And the effect of socio-anthropological variables on the change of household- economy was analyzed by Two-way ANOVA. the conclusions derived from the results of this study are as follows; 1) The marriage-period and the educational conditions of the first child were selected as the classifying factors through analyzing correlation among the age, the marriage-period and the educational conditions of their children. As a result of this analysis, the family life cycle were classified into seven stages: Stage 1; Establishment Stage 2; Preschool family Stage 3; Elementary school family stage 6; Adult period family Stage7; Marriage period family . 2) The change of household economy incidental to the progress of family life cycle has a significant differences in all of variables (except the other member of family's income) Stage 1; Though the husband's income and the income from property are on a low level, the total income is on a high level due to the housewife's income. Stage 2; The total income is on a low level owing to the decrease of house wife's income, though the husband's income keep growing. Stage 3; Owing to the increase of husband's income, the cost of living as well as the total income keeps growing but the savings are on the decrease. Stage 4; Compared with Stage 3, the total income tends to be on a low level but the living expenses are on the increase. Stage 5; The husband's income is on the highest level in the stages of family life cycle. The total income and the living expenses are on a high level. Stage 6; The income of husband and housewife are on the remarkable decrease but the children's income is on the increase. Stage 7; Owing to the increase of the children's income and the income from property, the total income is on the highest level in the stages of family life cycle. 3) Considering the effect of socio-anthropological variables on the conditions of household-economy, family system has an significant effect on children's income. the husband's occupation exerts a significant effect upon the housewife's and children's income. The husband's schooling exercises an effect upon the children's income. S.E.S has a important effect on the income of husband, housewife and children. From the above results, it is found that the change of household-economy conditions is incidental to the progress of family life cycle. Therefore, a suitable measure to cope with the desire of family and the conditions of household-economy should be prepared, in order to carry on a reasonable home management.

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Paraquat에 의해 유도된 Superoxide Dismutase 결핍 효모의 산소 독성 (Oxygen Toxicity of Superoxide Dismutase-Deficient Saccharomyces cerevisiae by Paraquat)

  • 김지면;남두현용철순허근
    • KSBB Journal
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    • 제10권5호
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    • pp.561-567
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    • 1995
  • 활성산소 소거 효소인 superoxide dismutase (SOD)가 결핍된 효소 변이주들을 대상으로 하여, 활성산소 유발물질인 paraquat을 배지에 첨가하여 배양하면서 산소 독성을 관찰하였다. 호기 상태에서 는 MnSOD (mitochondria SOD) 결핍 효모는 CuZnSOD (세포질 SOD) 결핍 효모보다 성장이 많 이 저하되었지만, 혐기 상태에서는 이들 SOD 결핍 효모 모두 성장 속도에서 야생 효모와 큰 차이를 보이지 않았다. Paraquat으로 처 리한 결과, 호기 배양 에서 CuZnSOD 결핍 효모는 O.OlmM 이상에서 성 장하지 않음을 알 수 있었다. 따라서 O.OOlmM paraquat을 배지에 첨가한 후 호기적으로 배양하면서 세포내 성분의 변화를 관찰하였더니, CuZnSOD 결핍 효모에셔는 catalase 역가가 떨어진 반면 glutathion peroxidase 역가와 세포막 지질의 과산 화물이 증가하였으며, MnSOD 결핍 효모에서는 catalase 역가와 glutathion peroxide 역가가 모두 조금씩 증가하면서 세포막 지질의 과산화물은 그다지 변화하지 않았다. 이러한 사실로부터 CuZnSOD 가 없는 경우 활성산소 소거계로써 catalase 보다 glutathion peroxidase가 훨씬 활성화되어지지만, 이렇게 활성화된 glutathion peroxidase로는 세포질내 산소 radical을 완벽히 제거하는데에는 다소 불충분 하다는 사실을 알 수 았었다. 한편, 혐기적 배양에서 는 SOD 결핍 효모들의 catalase 역가는 모두 감소 한 반면, glutathion peroxidase 역가는 다소 증가하였고, 또한 세포막 지질의 과산화물은 다소 감소하는 추세를 보였다. 이는 혐기 상태에서 산소 radical 이 소량밖에 생기지 않으므로, 활성화된 glutathion p peroxidase에 의해 어느 정도 극복되어지기 때문인 것으로 사료된다. 두 집단 간에 어느 정도 방향성은 있는 것으로 판단된다.ds for eagerness for lasting life not only in this world but also in the other world., Keun-Kap, Scarf, Pee-Bak, Hung-Kap, Pok-Kap, Yang-Dang-Kap, We-Yo-Kap, Kum-Kap, and caries arms. Lower-level officials wore Pe-Bal, Kun-Mo, gae, won-leung, very small sleve jacket, a long coat reaching up to the knee length, slacks, belt, loin cloth and apron. 5) Children's bind their hair up angle shape and wore a half long jacket raching up to the hip and slacks. 나) Women's wear; 1. hair style and hair dress; 1) High rank women's hair style was very extravaganceful. They made their hair top knot (one, two, or more knots) and decoraed precious stone, pan shape head dress, wheel shape head dress, and flower shape precious stone decorated head dress. 2. Clothes ; 1) High rank ladi's wore Kun-Kyun attached jacket, and jacket sleeves decorated pleats, and pleats decorated long skirt, apron, back apron, knot belt, scarf, this type is the same

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방사선 치료를 시행 받은 폐암 환자에서 방사선 폐렴의 발생에 관한 예측 인자 (Factors Predicting the Development of Radiation Pneumonitis in the Patients Receiving Radiation Therapy for Lung Cancer)

  • 안진영;이연선;권선중;박희선;정성수;김진환;김주옥;조문준;김선영
    • Tuberculosis and Respiratory Diseases
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    • 제56권1호
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    • pp.40-50
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    • 2004
  • 연구배경 : 폐암은 우리 나라에서 점차 증가하고 있으며 발생빈도에 있어서는 위암에 이어서 두 번째이고 암에 의한 사망 원인의 첫 번째 원인이 되고 있다. 수술요법이 가장 좋은 치료이나 대부분의 환자들이 진단 당시 수술을 받지 못할 정도로 진행이 되어서 방사선 치료나 항암 치료를 동반한 방사선치료를 받게 된다. 방사선 치료 중 방사선 폐렴의 발생이 제일 중요한 부작용이다. 폐암으로 진단을 받고 흉부 방사선 치료를 시행 받은 환자에서 방사선 폐렴의 발생률 및 치료. 발생 및 중증도를 예측 할 수 있는 인자, 생존에 미치는 영향에 대해서 후향적 조사를 하였다. 방 법 : 충남대학교병원 호흡기 내과에서 폐암으로 진단을 받고 2000년 12월부터 2002년 12월까지 치료 방사선과에서 흉부 방사선 치료를 시행 받은 환자 90명을 대상으로 조사하였다. 결 과 : 90명의 환자 중 44명(48.9%)이 방사선 폐렴으로 진단을 받았으며 33명(36.6%)은 경증, 11명(12.3%)은 중증의 방사선 폐렴이 발생하였다. 중증의 방사선 폐렴 환자는 모두 부신 피질호르몬제를 사용하였으며 호흡 부전으로 내원한 한 환자를 제외한 나머지 10명의 환자들의 처음 평균 투여량은 prednisolone 34 mg(30~40)이었고, 평균 투여일수는 68일(8~97)이었다. 중증 방사선 폐렴이 발생된 경우에 있어서 경증에 비해 중앙 생존일이 의미 있게 낮았다.(p=0.046) 방사선 폐렴 발생과 관련된 인자는 방사선 투여량이 60 Gy 이상인 경우에 통계적으로 의미가 있었다.(p=0.001) 그 외에 활동도, 폐활량, 나이, 흡연, 조직형, 항암 치료와의 병용여부, 1일 방사선 조사 횟수, 방사선 투여 방식은 방사선 폐렴 발생과 통계적으로 의미가 없었다. 또한 중증의 방사선 폐렴 발생을 예측 할 수 있는 인자로 이용 될 수 있는 혈중 요산과 알부민의 농도와 방사선 폐렴의 중증도와는 통계적으로 의미가 없었다. 결 론 : 본 연구에서 60 Gy이상의 총 방사선 조사량이 방사선 폐렴의 발생과 관련이 있었고 조사량과 중증도와도 연관이 있음을 알 수 있었다. 또한 중증의 방사선 폐렴 발생 시 예후가 경증의 환자에 비해 상대적으로 좋지 못했다.

스테로이드의 투여가 말초혈액 단핵구에서 IkB/NF-κB경로에 미치는 영향 (Effect of Steroid Administration Ex Vivo on the IκB/NF-κB Pathway in Human Peripheral Blood Monocytes)

  • 윤호일;이희석;이창훈;이춘택;김영환;한성구;심영수;유철규
    • Tuberculosis and Respiratory Diseases
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    • 제54권5호
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    • pp.542-550
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    • 2003
  • 배경 : 스테로이드는 그 뛰어난 염증억제 효과로 여러 만성 염증성질환의 치료제로 널리 쓰이고 있다. 최근 스테로이드의 염증억제의 기전이 I${\kappa}B$의 전사를 증가시키고, 활성화된 NF-${\kappa}B$를 억제시키는 것으로 밝혀졌다. 그러나 대부분의 연구가 세포주에 스테로이드 처치를 한 후 이루어진 것이어서 본 연구에서는 인체에 직접 스테로이드를 투여한 후, 스테로이드가 NF-${\kappa}B$ 에 미치는 영향을 알아보고자 하였다. 방법 : 건강한 자원자 5명을 대상으로 prednisolone을 0.5mg/kg/d의 용량으로 7일간 투여하였고 투여 전과 후에 각각 말초혈액 단핵구를 추출하여 이를 자극하지 않은 군(baseline), IL-$1{\beta}$, LPS, TNF로 자극한 군으로 나누어 $I{\kappa}B{\alpha}$에 대한 western blot을 시행하였다. 또한 투여 전후에 얻은 말초단핵구를 각각 LPS로 자극하고 EMSA를 시행하였다. 결과 : 5명중 3명에서는 $I{\kappa}B{\alpha}$의 기저발현에 차이가 없었으나, 나머지 2명에서는 스테로이드 투여 후 $I{\kappa}B{\alpha}$의 기저발현이 증가하였다. 5명 모두에서 스테로이드 투여 후에 외부자극에 의한 $I{\kappa}B{\alpha}$의 분해가 억제되었으며, EMSA로 NF-${\kappa}B$의 DNA 결합능이 감소하는 것을 확인하였다. 결론 : 스테로이드의 항염증효과는 $I{\kappa}B{\alpha}$의 기저발현의 증가, NF-${\kappa}B$ 의 DNA 결합능 감소, 그리고 자극 에 의한 $I{\kappa}B{\alpha}$ 분해의 억제에 의한다.

지역사회 거주 뇌졸중환자의 수단적 일상생활동작과 자기 효능감이 보호자의 삶의 질에 미치는 영향 (The Effect of Self-Efficiency and Instrumental Activities of Daily Living of Local Community Stroke Patients on Quality of Life in Caregiver)

  • 고준;이승희;이태관;정혜림;홍근호;홍기훈
    • 대한지역사회작업치료학회지
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    • 제5권1호
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    • pp.11-21
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    • 2015
  • 목적 : 본 연구는 지역사회 거주중인 뇌졸중 환자를 대상으로 자기 효능감과 수단적일상생활동작의 정도로 자립 정도를 알아보고 이에 따른 보호자의 삶의 질을 파악해봄으로써 지역사회 거주 뇌졸중 환자와 보호자간의 상관관계를 알아보고자 한다. 연구방법 : 2014년 5월 12일부터 2014년 5월 23일까지 총 2주간에 걸쳐 부산광역시에 위치한 3개 병원, 경상남도 거제시 소재 2개 병원에 외래 치료중인 MMSE-K 24점 이상인 뇌졸중 환자 138명을 대상으로 설문지(K-IADL, 자기효능감 측정도구, WHOQOL-BREF)를 이용해 자료를 수집하였으며 총 125부를 최종적으로 분석 하였다. 결과 : 125명의 환자 중 남자는 70명, 여자는 55명이었으며 평균연령은 58.72세(16세~82세)이었다. 대상자는 일반적 자기 효능감(p<0.01), 구체적 자기 효능감(p<0.01)과 보호자의 삶의 질 사이에서 유의한 상관관계를 나타내었고 수단적 일상생활 동작과 보호자의 삶의 질 사이에는 유의한 상관관계가 나타나지 않았다. 결론 : 일반적 자기효능감과 구체적 자기효능감이 보호자의 삶의 질과 상관관계를 보였으며, 일반적 특성중 경제상황 요인이 보호자의 삶의 질과 연관이 있는 것으로 나타났다. 결론적으로 뇌졸중 환자의 자기 효능감이 높을수록 보호자의 삶의 질도 높아지며 경제상황이 좋을수록 보호자의 삶의 질도 높게 나타났다. 그러나 뇌졸중 환자의 수단적 일상생활동작 정도와 보호자의 삶의 질과의 상관관계는 나타나지 않았다. 외래 치료중인 환자의 상황이 점점 만성화 되어 가고 있는 추세로 볼 때 현재 자신의 상태에 만족하지 않고 좀 더 발전 할 수 있는 자기 효능감 회복에 대한 치료적 계획이 수립되어져야 할 것이다.

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일부 시 지역 고교생.학부모.교사들의 성의식 조사 (A Research Study on the Sexual Awareness of Teenagers. Their Parents and Teachers in an Urban Area)

  • 임미림;양순옥;이광옥
    • 지역사회간호학회지
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    • 제12권3호
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    • pp.755-772
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    • 2001
  • The specific purpose of this study was as follows: 1) To identify the level of sexual awareness and demand for sex education of teenagers, their parents and teachers. 2) To investigate the attitude toward and acceptance of heterosexual friendships by teenagers, their parents and teachers. 3) To identify the experience and direction of sex education of parents and teachers. For this purpose, this study selected 341 male and female teenagers at three high schools located in a city, 119 parents with high school students and 243 elementary/middle/high school teachers. The structured questionnaire was distributed to each of them and returned by them. This study was conducted over the period between June 1. 2001 and Aug 31. 2001. A total of 720 questionnaires were distributed to them and 703 were returned. Data analysis was conducted to obtain percentage and frequency using the SAS program. As a result, the following findings were obtained: Parents and teachers showed a similar attitude about sexual awareness, but teenagers showed a different attitude. In terms of the level of feeling of and interest in 'sex', teenagers, parents and teachers were comfortable in accepting it. As for sexual curiosity in puberty, 84.8% of the parents and 95.5% of the teachers responded that it was natural, whereas only 14.7% of teenagers responded that it was natural. But As for the item that 'sex is natural as one of human needs', 3.6% of the teenagers, 16.8% of the parents and only 1.2% of the teachers responded that it was not. As for the item that 'A man has a stronger sexual impulse than a woman', 6.1% of the teenagers, 16.8% of the parents and 17.3% of the teachers responded that it was not. 64.2% of the teenagers and 90.2% of the teachers responded that it was impossible to overcome the sexual impulse, whereas only 8.4% of the parents responded that it was possible. As for the item of masturbation, 64.5% of the teenagers responded that it was possible for male students and not possible for female students. 67.2% of the parents and 91.1% of the teachers responded that it was possible regardless of sex. As for the item of an attitude toward virginal purity, both the parents and teachers showed that virginal purity was important for both man and woman, but teenagers showed a weak awareness of virginal purity. As for the item, 'It is possible to have sexual intercourse with a lover during adolescence', 20.2% of the teenagers, 79% of the parents and 87.7% of the teachers responded that it was impossible. As for the item 'It is necessary to keep premarital virginal purity for a happy married life', 21.1% of the teenagers, 74.8% of the parents and 55.1% of the teachers responded that it was necessary, which shows that teenagers had a different opinion than parents and teachers. In case of pregnancy in adolescence, most of the responding teenagers, parents and teachers chose abortion. As for the item 'female refusal on male sexual approach', respondents accepted female refusal as they did for orders of teachers, parents and adolescents. As for item 'An assaulter is entirely to blame for sexual assault', all of three groups responded in the affirmative.

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성교육이 중학생의 컴퓨터와 비디오 음란물 접촉에 미치는 효과 (Effect of Sex Education on Middle School Students' Access to the Obscene Online Computer and Video Film Contents)

  • 우해자;김정남;박경민
    • 지역사회간호학회지
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    • 제12권3호
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    • pp.795-814
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    • 2001
  • To evaluate the effect of sex education on middle school students' access to the obscene online computer and video film contents. 154 students were selected as experimental group. and 154 students were selected as control group, sampled randomly from Andong. Kyungbook, Korea. An analysis was performed. A non-equivalent control group pre test-post test research design was used. The data were collected from April 2nd to April 19th. 2001. A pre-survey was done on general characteristics and the condition of accessing obscene online computer and video film contents on both experimental and control group. From the survey results information. sex education contents were put together. The researcher organized 3 ready-made sex education program and explained to the four school health nurses about the ready-made sex education program step by step and they educated their selected students with three classes of 45 minutes lecture. Two weeks after the last lecture, a post-test was conducted. Four weeks from the last lecture, another post-test was conducted. The existing studies by Choi Yongseon(1998) and Kim Hyeok(1998) were reviewed and two professors in the department of community health nursing advised on the study questionnaire writing. An SPSS Win 10.0 was used. The data of respondents' general characteristics were analyzed using frequency and percentage. $X^2$ test was used to verify the homogeneity of the experimental group and the control group. Repeated Measures ANOVA was used to find out whether sex education had an effect on the awareness of obscene online computer and video film contents and under-age prostitution through the online computer networks. and time and frequency of access to the obscene online computer and video film contents. The results of the study are as follow. 1. The results of the verification of homogeneity between the experimental group and the control group showed that there was no significant difference between the experimental group and the control group. 2. The first hypothesis, 'the experimental group which received sex education would have a higher level of awareness of accessing obscene contents than the control group which did not receive the education' was supported at p<0.0001. 3. The second hypothesis. 'the experimental group which received sex education would have a higher level of awareness of underage prostitution on computer networks than the control group which did not receive the education' was supported at p<0.05. 4. The third hypothesis, 'the experimental group which received sex education would spend time less accessing obscene video and computer contents than the control group which did not receive the education' was rejected at p>.05. 5. The 4-1 hypothesis. 'the experimental group which received sex education would access obscene computer contents less frequently than the control group which did not receive the education' was supported at p<0.0001. 6. The 4-2 hypothesis, 'the experimental group which received sex education would access obscene video contents less frequently than the control group which did not receive the education' was supported at p<0.0001. In conclusion, a systematic step-by-step sex education program should be developed to protect middle school students from the harmful online computer and video film access. An effective teaching material for sex education should be prepared to decrease middle school students' access to obscene online computer and video film contents.

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국내 및 미국 뉴저지주의 수영장 물에서의 클로로포름 (WATER CHLOROFORM LEVELS IN INDOOR SWIMMING POOLS IN A CITY OF KOREA AND IN A CITY OF NEW JERSEY IN THE UNITED STATES)

  • 조완근
    • 한국환경과학회지
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    • 제3권2호
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    • pp.101-109
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    • 1994
  • 염소처리된 수영장 물에는 염소처리된 음용수에 비해 높은 농도의 크로로포름이 존재한다.네 개의 수영장 (국내수영장 A,B 및 C 롸 미국 뉴저지주 수영장 D)물에서 클로로포름 농도를 조사하였다. 수영장 C(시관리)에서 측정된 클로로포름 농도는 개인 운영 수영장 A 와 B 에서 측정된 클로로포름 농도와 통계적으로 (p=0.0001) 다르게 나타났다 : 수영장 A, B, 및 C 에서 측정된 클로로포름 농도는 통계적으로(p=0.0001) 다르게 나타났따. 국내 수영장 물의 평균 농도와 농도 범위는 각가 23.$\mu\textrm{g}$/ㅣ 과 10.9-47.9$\mu\textrm{g}$/ㅣ 이며, 뉴저지주 수영장 물의 평균 농도와 농도 범위는 각각 64.4${\mu}g/l$ 과 27.-96${\mu}g/l$ 였다. 국내 수영장은 살균제로서 차아염소산과 오존을 홍용하며, 뉴저지주의 수영장은 차아염소산만으로 살균하므로, 두 지영의 그러한 차이는 100%는 아닐지 라도 최소한 살균 처리 공정의 차이에 기인한 것으로 추정된다. 수영 변수들이 일관성 없이 변하여, 시간이 경과함에 따라 물속의 클롤로포름 농도의 증가 및 감소가 불규칙하게 변했고, 클로로포름 축적도 일정치 않았다는 것이 암시 되었다. 회귀 분석 결과, 시료 채취 시간과 클로로포름 농도 사이에 유의성 없는 것으로 나타났다. 또한 F 시험 결과는 수영장으로 부터 오전과 오후에 채취된물 시료의 클로로포름 놈도는 서로 다르지 않게 나타났다. 국내 수영장 물의 클로로포름 평균 농도를 23.2${\mu}g/l$ 로 간주하여, 한 시간 수영을 할 때 식도를 통해서 체내에 흡수ㅚ는 클롤로포름의 량은 0.58${\mu}g/l$ 으로 추산되었다. 극단적인 상황에서는, 한 시간 수영을 할 경우 식도를 통해서 체내에 흡수되는 크롤로포름의 량이 12${\mu}g/l$ 으로 추산되었다. 수영장 물어서의 클로로포름 함유량을 고려해 볼 때, 오전 또는 오후에 수영을 하든지 간에 식도를 통해서 체내에 흡수되는 클로로포름의 량은 차이가 없는 것으로 간주된다.

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서양등골나물의 환경적응력 : 중금속 축적과 Phenolic Compounds의 관계 (Environmental Adaptability of Eupatorium rugosum : Relationship between Accumulation of Heavy Metals and Phenolic Compounds)

  • 김용옥;박종야;이호준
    • The Korean Journal of Ecology
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    • 제26권1호
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    • pp.5-12
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    • 2003
  • 서양등골나물의 잎 추출액을 미국자리공을 비롯한 5종의 식물에 처리하여 종자발아와 유식물생장을 조사하였고, total phenolic compounds와 중금속 이온을 서양등골나물의 분포에 따라 잎과 토양에서 분석하였다. 서양등골나물의 잎 추출액에 의한 미국자리공의 초기생장은 10%와 25%농도에서 촉진되었고, 토양 추출액의 total phenolic compounds는 잎 추출액의 total phenolic compound 보다 낮았다. 토양의 total phenolic compounds는 대조구와 10%, 25% 농도로 처리된 토양에서 유의한 차이가 없었으며 자연상태에서 잎 추출액 25%가 threshold 농도임을 확인하였다. 서양등골나물의 total phenolic compounds는 신갈나무림 임상에서 1.66 mg/1, 임연에서는 1.09 mg/l로 조사되었으므로 상부식생에 따른 total phenolic compounds는 유의한 차이를 보였으나, 각 토양에서는 상부식생에 따라 total phenolic compounds간에 유의한 차이를 보이지 않았다. 서양등골나 물의 잎 추출액 처리시 애기수영과 강아지풀의 발아율은 50% 이상의 농도에서 현저히 억제되었으나, 차풀의 발아율은 추출액의 농도에 따라 차이가 없었다. 유묘와 유근생장은 귀화종 그룹보다 자생종 그룹이 2배 이상 억제되었으며, 특히 서양등골나물의 추출액 농도 10%와 25%가 처리된 서양등골나물의 종자발아와 건중량은 대조구보다 촉진되었다. 서양등골나물의 phenolic compounds를 HPLC로 분석한 결과 caffeic acid (460.9 mg/1), benzoic acid (109.7 mg/l), protocatechuic acid (7.3 mg/l), ρ-hydroquinone (6.0 mg/l), cinnamic acid (2.7 mg/l), hydroquinone (0.23 mg/1) 순으로 분석되었다. 분석된 서양등골나물의 phenolic compounds 각각에 대한 미국자리공의 발아율은 caffeic acid (460.9 mg/l)치 농도가 높을지라도 이것이 낮은 cinnamic acid와 protocatechuic acid에서 현저한 억제현상을 보였다. 서양등골나물 임상의 토양보다 서양등골나물이 분포하지 않는 토양의 중금속 함량이 전반적으로 높았다. 특히 Al, Fe 및 Mn의 함량이 높았으며 이들 중금속은 total phenolic compound 함량이 높은 잎에 대부분이 축적되었다.