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전통공연예술의 축제화와 연행양상에 대하여 - 일본 아키타 간토마쓰리(竿燈祭)를 중심소재로 삼아 (Research on Traditional Performing Arts Festival - case of Kanto Festival of Akita, Japan-)

  • 신근영
    • 공연문화연구
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    • 제39호
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    • pp.549-580
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    • 2019
  • 전통공연예술을 중심소재로 삼은 지역축제는 많이 있다. 전통공연예술은 그 지역의 역사를 담은 스토리가 있고, 전통공연예술을 통해 다른 지역과 변별되는 브랜드를 구축하기 쉽기 때문에 지역축제로 발돋움하기 쉬운 조건을 갖추고 있다고 할 수 있다. 본고에서는 동아시아 공동의 문화유산인 전통공연예술을 축제로서 전승하고 있는 사례를 탐색하여 지역의 공연예술이 지닌 의의와 지역성의 관계를 탐색했다. 지역성을 강하게 내포한 공연예술이 지역축제로 발돋움하여 그 지역을 대표하는 사례로서 일본 동북부 아키타(秋田) 현에서 열리는 간토마쓰리(竿燈祭)를 고찰했다. 간토마쓰리는 아오모리(靑森) 네부타마쓰리, 센다이(仙台)의 다나바타(七夕)마쓰리와 더불어 일본 동북부 3대 축제로 불린다. 1980년 중요무형민속문화재로 지정되면서 더욱 유명해졌다. 2005년 제1회 한일교류축제(교류한마당) 행사 이후 수차례 서울을 방문한 바 있으며, 일본을 대표하는 지역축제로서 널리 알려져 있다. 본고에서는 이 간토마쓰리의 역사와 현재 연행양상에 대해 논의하였다. 본래 마을단위의 참여행사였던 간토마쓰리는 1970년대 이후 젊은 층의 인구 이동과 거주민의 노령화 등의 문제에 직면했다. 이를 해결하기 위해 마을단위를 넘어 각급 학교와 교육기관, 각종 단체의 참여를 유도했고, 지역의 기업에도 참가를 설득했다. 간토 기예의 무료 강습, 어린이들의 흥미를 유발하는 학교 방문 행사도 꾸준히 진행해 왔다. 그결과 현재 마쓰리에 동원되는 간토는 250여개에 달하며, 묘기대회 역시 해마다 큰 인기를 구가하고 있다. 아키타시는 간토마쓰리의 보존과 전승을 위해 1931년 '아키타시 간토회'를 조직했는데, 이들은 마을단위 간토회나 시내 초중학교, 각 직장 등과 연계해 후계자를 육성하고 기술의 전승에 힘썼다. 현재는 아키타시청 내 '간토마쓰리실행위원회'를 설립해 축제의 모든 부분을 관리하고 있다. 현대축제가 지역사회 공동체 속에 뿌리내리기 위해서는 반드시 지역화되고, 개인화되는 의미와 활동이 수반되어야 한다고 볼 수 있다. 아키타 간토마쓰리 역시 예술의 경제적 수익성 측면에서 관광산업화와 밀착하여 상호작용하면서 전통문화를 변형시키고 새로운 정체성을 재구성해 나가는 모습을 확인할 수 있다. 지역전통을 국가적 맥락에서 재구성하고 축제를 지역의 문화를 팔기 위한 수단으로, 관광산업으로 이용하고자 하는 인식의 한 단면이 드러나기도 한다.

남쪽방향 행성간 자기장에 의해 발생한 자기 폭풍 동안 한반도 상공의 총 전자수 함유량 변화 (TEC VARIATIONS OVER KOREAN PENINSULA DURING MAGNETIC STORM)

  • 지은영;최병규;김관혁;이동훈;조정호;정종균;박종욱
    • Journal of Astronomy and Space Sciences
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    • 제25권1호
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    • pp.33-42
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    • 2008
  • 행성간 자기장(Interplanetary Magnetic Field)이 남쪽방향으로 전환되면서 발생된 2003년 자기폭풍 동안 한반도 상공 전리층의 총 전자수 함유량(Total Electron Content, TEC) 변화에 대해 알아보았다. 남쪽방향의 행성간 자기장과 지구 자기장의 상호작용에 의해 고위도에서 유도된 전기장과 저위도 전리층으로 전파된 전기장이 저위도 지역의 TEC 증가와 관련 있는 것으로 생각된다. 데이터 분석결과 2003년 6월 16일에 발생한 이벤트 동안에는 낮 지역 TEC 값이 약 15% 증가하였다. F2층의 최대 높이를 나타내는 hmF2는 300km 까지 상승되었으며, 수직방향 $E{\times}B$ 표류운동은 아랫방향으로 나타났다. 이것은 남쪽방향의 행성간 자기장 동안 고위도 지역으로 유입된 에너지에 의해 발생한 전리층의 교란된 다이나모 전기장이 TEC을 증가시킨 것으로 추정된다. 그러나 11월 20일에 발생한 이벤트 동안에는 전리층으로 전파된 서쪽방향 전기장에 의해 밤 지역 TEC 갈이 약 10% 증가한 것으로 보여 진다. 행성간 자기장이 남쪽방향으로 전환됨과 동시에 hmF2 높이는 200km까지 감소되었으며, 아랫방향 $E{\times}B$ 표류운동이 나타났다. 또한 행성간 전기장 y성분과 수직방향 TEC 값이 거의 비슷하게 변화하는 것을 볼 수 있었다. 이러한 결과들은 서로 다른 원인에 의해 발생하였지만 전리층의 교란된 전기장이 한반도 상공의 순간적인 TEC 값 증가에 중요한 요인으로 작용함을 보여 준다.

치과위생사의 근무환경 연구 -근무기관·경력·지역을 중심으로- (A study on work environments for dental hygienists: - focusing on kind of workplace. career and service area)

  • 류정숙;김영남;한경순
    • 한국치위생학회지
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    • 제7권2호
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    • pp.135-151
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    • 2007
  • The purpose of this study was to examine the work environments of dental hygienists, to find out about what problems there were with their work environments and ultimately to help improve their work environments. It's basically intended to pave the way for furthering the welfare and interests of dental hygienists. The subjects in this study were dental hygienists who were selected by random sampling from among the members of Korean Dental Hygienists Association. Approximately 20 percent of the members each were selected from every region across the nation, and their work environments were investigated in consideration of the kind of their workplaces, service area, career and field of duties. As for the demographic characteristics of the dental hygienists investigated, there were differences between those who worked in the field of health care and the clinical workers. More of the former were older and married, and the former was ahead of the latter in career and education as well. Regarding working hours and leave of absence by kind of workplace, the number of regular average holidays was different according to their place of employment. Dental hospitals(6.66 days) and dental clinics(6.81 days) gave their employees less days off on the whole, whereas public dental clinics(19.29 days) granted the dental hygienists the longest leave of absence. Also, there was a broad gap in the number of regular average holidays among different regions in the nation. The dental hygienists who worked in Gangweon province enjoyed the longest holidays(10.88 days), while those on Jeju Island took the shortest vacation(4.46 days). Concerning monthly mean pay by place of employment, those who worked in public dental clinics were paid the best, and the dental hospital employees received the smallest pay. Their monthly mean pay significantly varied with the kind of their workplaces. As to connections between service area and pay level in the event of the dental hygienists with a four-year career, those who served in Seoul were paid the best(1,820,800 won), followed by Gyeonggi province(1,795,800 won), Gyeongsang province(1,604,200 won), metropolitan cities(1,424,800), Gangweon province(1,300,000 won) and Jeolla province(1,016,700 won). In regard to the starting pay in the different areas, the starting pay was largest in Seoul(1,501,800 won) and smallest in Jeolla province(904,000 won). Concerning work environments by place of employment, the dental hygienists in public dental clinics, general hospitals and university hospitals were far older than the others, and the career of the former was much larger than that of the latter. As to the number of regular leave of absence, public dental clinics, general hospitals and university hospitals were different from dental hospitals and clinics in that regard as well. Concerning monthly pay, public dental clinics paid their employees the best, and dental hospitals and clinics were ahead in terms of pay raise. But the reason seemed that public dental clinics and general hospitals increased the pay of their employees based on a fixed wage system and according to a fixed rate at the same time. As for relations between career and work environments, the pay of the dental hygienists differed with their career. The amount and rate of pay raise were largest for those whose career was between four years and less than six years, and smallest for those whose career was between seven years and less than nine years. The above-mentioned findings of the study suggested that in order to give dental hygienists better treatment, pay and welfare benefits should urgently be improved, and that it's required to take actions to boost their job satisfaction. Besides, they should be given more chances to receive education or to take training courses in pursuit of self-development, and how to narrow gaps in work environments among different regions or fields should carefully be considered.

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심장 스텐트 시술과 의료사고 예방 (Cardiac Intracoronary Stenting vs CABG: Prevention of Medical Accident)

  • 김경례;박국양
    • 의료법학
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    • 제18권2호
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    • pp.163-194
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    • 2017
  • 관상동맥 질환은 2017년 고령사회로 진입한 우리나라에서 앞으로 더 많은 관심을 가질 것이다. 고령화가 될수록 고혈압, 당뇨 등 복합적인 질환이 합병되어 혈관상태도 상대적으로 더 나빠져 관상동맥 질환에 걸릴 가능성이 높기 때문이다. 심혈관 질병은 심장외과와 심장내과와의 긴밀한 협진이 필요하다. 따라서 협심증이나 심근경색증환자를 먼저 진료하게 되어 있는 우리나라의 임상현장에서 객관적인 심장내과 의사의 치료방침에 대한 판단은 매우 중요하다. 최근 심장내과의 비수술적 중재술이 발전하고 있지만 무리한 스텐트 시술로 의료사고도 발생하고 있다. 특히 관상동맥 3개혈관이 모두 막힌 삼중혈관이거나 석회화가 심해 혈관 상태가 좋지 않은 경우가 문제이다. 또한 심장외과 의사가 없는 병원에서 무리하게 경피적관상동맥중재술을 실시하다가 응급상황이 발생할 경우 관상동맥이식술 등 외과적 대처가 어려운 경우가 종종 발생한다. 최근 2년간 한국소비자원(소비자분쟁조정위원회) 의료분쟁 조정결정 8사례를 분석한 결과, 심장 중재술을 시행한 병원 중 심장외과 의사가 상주한 곳은 2곳으로 확인됐다. 8사례 모두 심장내과 진료 후 풍선확장술 및 스텐트 삽입한 경우로 7명이 사망했고 이중 5명은 시술 당일에 사망했다. 8사례 중에 3중혈관 환자는 5건이고, 나머지도 석회화가 심하거나 완전폐쇄로 혈관상태가 좋지 않은 상태였다. 2017년 심장내과 스텐트 시술 건수 조사 보고에 의하면 3개 이하 약물 방출 스텐트 시술이 98%로 보고됐다. 2015년 스텐트 시술 건수가 38,922건으로 약800건(2%)은 스텐트가 4개 이상 사용된 것으로 추정된다. 무리한 스텐트 시술로 마지막 여명에 급사함으로써 신변정리 기회상실은 물론 여명단축에 따른 손해로서 '지도 설명의무' 책임을 물어 전 손해에 대한 배상을 신중하게 고려할 필요가 있다. 최근 심평원 보험적용 스텐트 시술 개수 제한규제가 없어지면서 무리한 시술과 심장외과 의사 확충에 대한 문제가 있다. '다학제통합진료' 같은 병원차원의 해결방안은 물론 필수요원에 해당하는 심장외과를 공무원으로 확충하는 등 국가차원의 해결방안이 요구된다.

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Westgard Multi-Rules의 효율적 적용과 조치사항의 개선 (Efficient Application of Westgard Multi-Rules and Quality Control Implementation Improvement)

  • 정흥수;오윤정;배진수;백진영;황보라;신용환
    • 핵의학기술
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    • 제21권1호
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    • pp.60-64
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    • 2017
  • 검사의 질 향상과 국제표준화의 상용화 정도관리물질을 이용한 Westgard multi-rules 적용의 유용성은 이미 알려져 있다. 그러나 핵의학 체외검사의 특성상 정도관리물질과 환자검체의 동시 계측으로 인한 측정횟수의 증가에 따라 Westgard multi-rules법을 적용함에 있어 어려움이 있다. 이에 본 연구는 핵의학 체외검사에서 상용화 정도관리물질을 이용한 Westgard multi-rules 적용의 유용성과 보완, 개선을 통해 내부정도관리의 효율성 향상을 조사하였다. 2013년 01월부터 2016년 06월까지 삼성서울병원 핵의학과 체외검사실 통합의료시스템에 기록된 총 282건의 적용된 계통오차 multi-rules (22s, 101s)과 117건의 조치사항 기록을 분석하였다. 조치사항은 multi-rules 중 계통오차의 규칙이 적용 되었을 때 기록하는 원인분석으로 정도관리물질 오류, 실험과정 오류, 검사키트 로트번호 관리 오류, 기타 등 총 4개의 대분류로 구성하였다. Westgard multi-rules 적용을 통해 조치사항을 분석한 결과 정도관리물질 오류가 62건, 실험과정 오류가 24건, 검사키트 로트번호 관리오류가 18건, 기타 13건으로 분류되었다. 정도관리물질 오류를 방지하고자 개선사항으로 기존에 각 검사자마다 사용하던 방식을 담당자 지정 방식으로 변경하여 모든 검사의 하루 소비량을 분주하여 공동사용을 하였고, 나머지 오류를 방지하고자 검사 전후 모든 과정을 표준화 하여 검사실내 어느 검사자가 시행 하더라도 일원화할 수 있게 하였다. 정도관리물질 오류를 개선한 결과 해동 후 2일 이내 신선한 물질을 사용 가능하였고 같은 물질을 사용하는 검사끼리 비교가 가능해져 물질에 의한 오류인지 명확해짐으로 계통오차 발생원인이 정도관리물질 오류로 기록하는 건수가 줄어들었다. 또한 정도관리물질의 로트번호 변경 시 교체시기가 같아 관리가 용이해졌고, 물질 사용량의 감소로 경제적 효과를 얻을 수 있었다. 그리고 검사표준화 적용 후, 계통오차의 규칙인 22s와 101s의 발생건수가 개선 전 보다 월 평균 2건 이상 줄어드는 결과를 보였다. Multi-rules의 적용을 통한 계통오차의 빠른 확인을 위해 정도관리물질의 체계적인 관리와 목표값과 표준편자의 설정 및 관리가 바탕이 되어야하며, 계통오차 발생 시 검사의 원인분석을 통한 조치사항을 기록하는 것이 중요함을 확인하였다. 본 실험의 결과로 Westgard multi-rules 적용 분석을 통해 발생 오류의 기재와 원인을 효율적으로 분석함으로써 핵의학 검사 내부정도관리의 질적 향상과 정확하고 신속한 결과보고에 기여할 것으로 사료된다.

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PKM2 Regulates Hepatocellular Carcinoma Cell Epithelial-mesenchymal Transition and Migration upon EGFR Activation

  • Fan, Fang-Tian;Shen, Cun-Si;Tao, Li;Tian, Chao;Liu, Zhao-Guo;Zhu, Zhi-Jie;Liu, Yu-Ping;Pei, Chang-Song;Wu, Hong-Yan;Zhang, Lei;Wang, Ai-Yun;Zheng, Shi-Zhong;Huang, Shi-Le;Lu, Yin
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권5호
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    • pp.1961-1970
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    • 2014
  • Pyruvate kinase isozyme type M2 (PKM2) was first found in hepatocellular carcinoma (HCC), and its expression has been thought to correlate with prognosis. A large number of studies have demonstrated that epithelial-mesenchymal transition (EMT) is a crucial event in hepatocellular carcinoma (HCC) and associated metastasis, resulting in enhanced malignancy of HCC. However, the roles of PKM2 in HCC EMT and metastasis remain largely unknown. The present study aimed to determine the effects of PKM2 in EGF-induced HCC EMT and elucidate the molecular mechanisms in vitro. Our results showed that EGF promoted EMT in HCC cell lines as evidenced by altered morphology, expression of EMT-associated markers, and enhanced invasion capacity. Furthermore, the present study also revealed that nuclear translocation of PKM2, which is regulated by the ERK pathway, regulated ${\beta}$-catenin-TCF/LEF-1 transcriptional activity and associated EMT in HCC cell lines. These discoveries provide evidence of novel roles of PKM2 in the progression of HCC and potential therapeutic target for advanced cases.

주장훈련 프로그램을 적용한 국내학위논문 분석 (An analysis of studies on Assertiveness Training reported in Korea from 1982 to 1997.)

  • 하나선;최정
    • 간호행정학회지
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    • 제4권1호
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    • pp.215-228
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    • 1998
  • The purpose of this study is analysis of 52 dissertations on assertiveness training which presented from 1982 to 1997 in Korea. It was diversified the research purpose to by 1) time of publication or presentation 2) research design, characteristics of subjects used in each study 3) related concepts, the effects of nursing interventions according to related concepts 4) the effects of nursing interventions according to the subjects 5) the effects of nursing interventions according to the frequency and the period of assertiveness training 6) the effects of nursing interventions according to the group size. 7) the effects of nursing interventions according to the necessary time per round. Findings obtained in the study were as follows : 1. At the point of the numbers of studies presented by year, the number of the studies tend to increase, especially the most plentiful papers were presented during five years from 1991 to 1995. 2. Research design of the studies belong to experimental research. The subjects of research consists of 5 Nursing related subjects and 47 Non-nursing related subjects so that Non-nursing related subjects contain much large proportion. 3. When studies were classified by the related concepts, they were classified that 17 studies were by assertiveness & assertive behaviour, 15 ones anxiety, 9 ones self & ego, 7 ones depression. It can be inferred that studies related to assertive behaviour, self & ego, sociality and power of learning were increasing. Otherwise, studies related to anxiety, depression, aggression, shyness and anguish were decreasing. 4. At the point of the nursing intervention effect by the subjects, the concepts of assertive behavior, feeling of self-respect and sociality were increasing, but the concepts of conflict and interpersonal stress were decreasing and the concepts of anxiety and sociality were ineffective in the subjects related Nursing. On the contrary, the concepts of assertive behavior, sociality and personalty were increasing, but the concepts of anxiety, depression, aggression, shyness, self-estranged feeling were decreasing and the concepts of assertive behavior, aggression, personalty, power of learning, anxiety, self-concepts and self-expression were ineffective in the subjects related Non-Nursing. 5. 18 studies can be found, which investigated 10 times for 5 weeks from the point of the nursing intervention effect by the times and the period of assertiveness training. In case of over 5 times of assertiveness training, assertiveness, assertive behavior and personality(tranquility, depression) increased. In 6 times, feeling of self-respect & egorespect increased but depression, interpersonal stress and anxiety decreased. In over 10 times, shyness, shame and feeling of self-estrangement decreased. In over 12 times, interpersonal anxiety decreased. 6. In the event of nursing intervention effect by the size of the group, it was greatest within 10 persons in 21 studies. In case of within 10 to 20, only feeling of self-expression were ineffective. Particularly, in case of over 31 persons, there were no ineffective concepts. 7. At the viewpoint of nursing intervention effect by the necessary time of one time, it was greatest within 1 to 2 hours in 32 studies. In case of within 1hour, aggression, power of learning and assertiveness were ineffective. In case of within 1 to 2 hours, assertive behavior, self-expression, personality and anxiety were ineffective. Particularly, in case of within 2 to 3 hours, there were no ineffective concepts.

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치과의원 환자의 구강위생용품에 대한 인지도, 용도이해 및 사용실태에 관한 연구 (A study on the status of recognition, understanding of the use and practical application of oral hygiene devices in dental clinics patients)

  • 박정순;김영임;장선희
    • 한국치위생학회지
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    • 제9권4호
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    • pp.685-698
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    • 2009
  • Objectives : This study was to examine the recognition and understanding of the use, application of oral hygiene supplies among dental clinic patients in a bid to stress the necessity of education on the right awareness and use of oral hygiene supplies, to provide information on the development of educational programs and ultimately to help promote the oral health of people in general. Methods : The subjects in this study were 314 patients who visited dental clinics in North Jeolla Province in June 2009. Results : 1. Out of oral hygiene supplies, the largest number of the patients investigated(74.6%) were best cognizant of dental floss, and the greatest group(77.7%) had the right understanding of the use of toothpick. Currently, the oral hygiene supplies that were most widely in use were toothpicks(43.2%). 2. As to the relationship of awareness and understanding of the use, application of oral hygiene supplies to subjective oral health status, 50.0 percent of the patients who understood the use of toothpick found themselves to be in good health, and the gaps between them and the others were statistically significant. Among those who were aware of dental floss, the largest group(51.4%) considered themselves to be in good shape, and in the event of those who understood the use of dental floss, the greatest group(49.2%) deemed themselves to be in good health. Out of those who understood the use of mouse rinse, the largest group(53.7%) thought they were in good health(p<0.05). 3. Recognition of interdental brush, understanding of its use and whether to use it currently or not were identified as parents to use oral hygiene supplies recommended by dental clinics(p<0.05). 4. Recognition of interdental brush, understanding of its use and whether to use it currently or not were identified as patients to use oral hygiene supplies recommended by dental clinics(p<0.05). 5. The largest group of those who didn't put dental floss to use didn't use it for other reasons unspecified in the questionnaire, and the second greatest group of them didn't use it since it was so onerous to do that. There were statistically significant differences in the reason why they didn't use the oral hygiene supplies(p<0.05). 6. Awareness of dental floss and interdental brush, understanding of the use of the two and whether to use the two at present or not made statistically significant differences to whether they were likely to use the oral hygiene supplies in the future. And whether they were likely to use the oral hygiene supplies in the future was statistically significantly different according to awareness of mouse rinse and understanding of the use of it as well(p<0.05). Conclusions : Dental hygienists have to provide patients with various data of oral hygiene devices through oral health education and then only patients caring in dental clinics can choose the appropriate devices to claim for their own disease.

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Clinical Features according to the Frequency of Acute Exacerbation in COPD

  • Lee, Seung-Jun;Lee, Seung-Hun;Kim, Yu-Eun;Cho, Yu-Ji;Jeong, Yi-Yeong;Kim, Ho-Cheol;Kim, Jin-Hyun;You, Jin-Jong;Yoon, Chul-Ho;Lee, Jong-Deog;Hwang, Young-Sil
    • Tuberculosis and Respiratory Diseases
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    • 제72권4호
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    • pp.367-373
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    • 2012
  • Background: Chronic obstructive pulmonary disease (COPD) is now regarded as a heterogenous disease, with variable phenotypes. Acute exacerbation of COPD is a major event that alters the natural course of disease. The frequency of COPD exacerbation is variable among patients. We analyzed clinical features, according to the frequency of acute exacerbation in COPD. Methods: Sixty patients, who visited Gyeongsang National University Hospital from March 2010 to October 2010, were enrolled. Patients were divided into two groups, according to their frequency of acute exacerbation. Frequent exacerbator is defined as the patient who has two or more exacerbation per one year. We reviewed patients' medical records and investigated modified Medical Research Council (MMRC) dyspnea scale, smoking history and frequency of acute exacerbation. We also conducted pulmonary function test and 6-minute walking test, calculated body mass index, degree of airway obstruction and dyspnea and exercise capacity (BODE) index and measured CD146 cells in the peripheral blood. Results: The number of frequent exacerbators and infrequent exacerbators was 20 and 40, respectively. The frequent exacerbator group had more severe airway obstruction (forced expiratory volume in one second [$FEV_1$], 45% vs. 65.3%, p=0.001; $FEV_1$/forced vital capacity, 44.3% vs. 50.5%, p=0.046). MMRC dyspnea scale and BODE index were significantly higher in the frequent exacerbator group (1.8 vs. 1.1, p=0.016; 3.9 vs. 2.1, p=0.014, respectively). The fraction of CD146 cells significantly increased in the frequent exacerbator group (2.0 vs. 1.0, p<0.001). Conclusion: Frequent exacerbator had more severe airway obstruction and higher symptom score and BODE index. However, circulating endothelial cells measured by CD146 needed to be confirmed in the future.

Hydrogeochemical study of a watershed in Pocheon area: controls of water chemistry

  • Kim, Kyoung-Ho;Yun, Seong-Taek;Chae, Soo-Ho;Jean, Jong-Wook;Lee, Jeong-Ho;Kweon, Hae-Woo
    • 한국지하수토양환경학회:학술대회논문집
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    • 한국지하수토양환경학회 2004년도 임시총회 및 추계학술발표회
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    • pp.121-121
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    • 2004
  • The groundwater in the Pocheon area occurs from both a fractured bedrock aquifer in igneous and metamorphic rocks and an alluvial aquifer with a thickness of <50 m, and forms a major source of domestic and agricultural water supply. In this study, we performed a hydrogeochemical study in order to identify the control of geochemical processes on groundwater quality. For this study, groundwater level and physicochemical parameters (EC, Eh, pH, alkalinity) were monitored once a month from a total of 150 groundwater wells between June 2003 to August 2004. A total of 153 water samples (13 surface water, 66 alluvial groundwater, 74 bedrock groundwater) were also collected and analyzed in February 2004. Groundwater chemistry in the study area is very complex, depending on a number of major factors such as geology, degree of chemical weathering, and quality of recharge water. Hydrochemical reactions such as the leaching of surficial and near-solace soil salts, dissolution of calcite, cation exchange, and weathering of silicate minerals are proposed to explain the chemistry of natural groundwater. Alluvial groundwaters locally have very high TDS concentrations, which are characterized by their chloride(nitrate)-sulfate-bicabonate facies and low Na/Cl ratio. Their grondwater levels are highly fluctuated according to rainfall event. We suggest that high nitrate content and salinity in such alluvial groundwaters originates from the local recharge of sewage effluents and/or fertilizers. Likewise, high concentrations of nitrate were also locally observed in some bedrock groundwaters, suggesting their effect of anthropogenic contamination. This is possibly due to the bypass flow taking place through macropores. Tile degree of the weathering of silicate minerals seems to be a major control of the distribution of major cations (sodium, calcium, magnesium, potassium) in bedrock groundwaters, which show a general increase with increasing depth of wells. Thermodynamic interpretation of groundwater chemistry shows that the groundwater in the study area is in chemical equilibrium with kaolinite and Na-montmorillonite, which indicates that weathering of plagioclase to those minerals is a major control of hydrochemistry of bedrock groundwater. The interpretation of the molar ratios among major ions, as well as the mass balance calculation, also indicates the role of both dissolution/precipitation of calcite and Ca-Na cationic exchange as bedrock groundwaters evolves progressively.

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