RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 좁혀본 항목 보기순서

        • 원문유무
        • 음성지원유무
        • 원문제공처
          펼치기
        • 등재정보
          펼치기
        • 학술지명
          펼치기
        • 주제분류
          펼치기
        • 발행연도
          펼치기
        • 작성언어
        • 저자
          펼치기

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재후보

        건설업 안전경영시스템모델 개발

        채준석,갈원모,손기상 안전경영과학회 2001 안전경영과학회지 Vol.3 No.2

        Safety management cost, US$ one thousand billion has been input to the construction area from 1995 to 2000 but the management quality is still in the developing country level. The above mentioned increase of accident rate are attributed to the generous code regulation, net fit to the sense, varying with time change, but the more fundamental reason of this is no practical construction safety management system, up to now. Hardware-orienting operation for the system could be a main reason of this problem. In this paper, we developed a model for efficient construction safety system. It was found from the case study that the model result in high efficient with low cost.

      • 전도성 폴리피롤과 아크릴로니트릴-부타디엔 복합체에서의 전하이동 향상에 관한 연구

        채원석 대진대학교 첨단소재연구소 2000 첨단소재연구소논문집 Vol.3 No.-

        The charge transfer rate in polypyrrole(PPy) electropolymerized within poly(acrylonitrile-co-butadiene)(PAB) was compared with that in PPy deposited Pt electrodes by using cyclic voltammetry, chronoamperometry, and chronopotentiometry in acetonitrile. For both electrodes anodic and cathodic peak currents were proportional to scan rates below 100 mV/sec, but to square root of scan rates beyond 200 mV/sec. The apparent diffusion coefficient of ClO4- in the PPy/PAB composite is estimated to be 1.6 times larger than that in PPy. The PPy films composited within PAB layer showed higher anodic and cathodic currents and possessed faster charging-discharging process and larger capacity.

      • 수용액에서 유로퓸(Ⅲ)의 전기분광화학적 연구

        채원석 대진대학교 2001 大眞論叢 Vol.9 No.-

        It is possible that electrochemical reduction changes of Eu(Ⅲ) are observed by fluorescence spectroelectrochemical methods. Eu(Ⅲ) is electrochemically reduced at cathodic potential in the in the mixture of 5.0 x 10^(-3) M Eu(Ⅲ) and 0.1 M sodium benzoate containing 0.1 M LiClO₄ as supporting electrolyte on a pt or PIGE(Paraffin Impregnated Graphite Electrode). Sodium benzoate was used as energy donor because of small absorption cross section of Eu(Ⅲ). The Eu-complex formed by Eu(Ⅲ) and benzoate exhibits the hypersensitive peak at 618 nm corresponding to the _(5)D^(0)→_(7)F² transition. Under the of reduction potential of Eu(Ⅲ), the hypersensitive emission peak gradually decreases and a new and large absorption peak regarded as the 4f→5d transition of Eu(Ⅱ) appears at 248 nm and 328 nm. This is considered that the new absorption peak possessing large molar absorption coefficient can be used for the analysis of Eu(Ⅲ).

      • 직장남성의 연령 및 비만별 체력비교

        원영두,송채훈,조완주 朝鮮大學校 스포츠科學硏究所 2004 스포츠科學硏究 Vol.15 No.-

        This study examines the physical fitness of each factor needed by working men, seeks to improve their physical strength by age and the degree of obesity, prevent several diseases due to the lack of exercise in advance, improve their service efficiency, enjoy efficient leisure activities and develop exercise programs for diagnosing physical strength and improving health. It calculated the mean and standard deviation by age and obesity (BMI) using statistical program SPSS 11.0 with 702 working men and obtained the following conclusions from post-test using one-way ANOVA and scheffe for differential test of the mean between groups. 1. In compahson of physical fitness factors by age, the group below 29 years old showed higher physical fitness level than other age groups in muscular strength, muscular endurance, flexibility, equilibrium, agility, power, whole body reaction and cardiopulmonary endurance and in comparison between groups by age, there was statistically significant difference at all physical fitness factors as p<.001. 2. In comparison of physical fitness factors by obesity, underweight group showed higher physical fitness level at muscular endurance, agility, equilibrium and flexibility factors, normal weight group showed higher physical fitness at power and whole body reaction factors and obesity group showed higher physical fitness at muscular strength factor. In addition, as a result of comparing physical fitness factors among groups by obesity, there was statistically significant difference at muscular strength, agility, Power, flexibility and cardiopulmonary factors as p<-05.

      • 중년여성의 연령별 체력 비교

        원영두,송채훈,안용덕 朝鮮大學校 스포츠科學硏究所 2005 스포츠科學硏究 Vol.16 No.-

        This study measured physical fitness with 282 middle-aged women between 30 and 59, living in G metropolitan city who have no abnormality as a result of physical examination with a view to develop standardization method of health and strength factors by age and model of converting such factors into health age measures and obtained the following conclusions. In comparison of physical fitness by age. there were statistically significant differences in grip strength, sit-up, side step, reaction time. trunk extension, sargent jump. close eyes foot balance, Vo2max, and subjects in their thirties showed higher scores in physical fitness measurement and the older they are, the lower their strength.

      • 노인에게서 대퇴골 고관절 치환술시 마취관리 : 증례보고 A case report

        채원석 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

        An Ninety-year old female patient was transferred to the operating room for hip arthroplasty under regional anesthesia. Pulmonary (unction studies revealed severe restrictive pattern, and cardiomegaly noted in her chest X-ray examination. For the prevention of hypothermia, we first prepared blanketrol and IV line warmer and attempted epidural anesthesia, but we failed. We then did spinal anesthesia which was successfully administered. After performing regional anesthesia and injection of methylmethacrylate bone cement into the intramedullary canal, blood pressure and pulse was stable and no other evidence of instability. In the recovery room, she did not show any other symtoms, and three weeks later, she was discharged hospital without any sequelaes.

      • KCI등재

        수면 무호흡과 불안장애의 불면증에 대한 다원수면기록

        채정호,박원명,채영래,김제헌 大韓神經精神醫學會 1994 신경정신의학 Vol.33 No.2

        Objects : The authors studied polysomnographic findings of patients with sleep apnea DIMS (disorders of initiating and maintainig sleep) syndrome and anxiety disorders with insomnia related to another mental disorders. Methods : Eight patients with sleep apnea DIMS syndrome and fourteen patients with anxiety disorder with insomnia related to another mental disorder(nonorganic) were studied using computerized polysomnography. Results : 1) The sleep period time were significantly decreased in anxiety disorder group and the sleep latency was prolonged in these patients. 2) The changes in sleep stage and the number of arousals during sleep period time were more frequent in sleep apneic patients group. And using these variables we could discriminate sleep apneic patients group from subjects with anxiety disorder. 3) The stage 1 sleep was significantly increased in sleep apneic patients. 4) The apnea index in sleep apnea patients was 28.1±25.7. Conclusion : These results suggested that even though there were similiar clinical presentaion such as insomnia, the sleep features of sleep apnea DIMS syndrome and anxiety disorder with insomnia were different. And though there were no instruments to check respiratory flow or movement, it would be possible to discriminate the sleep apnea DIMS syndrome from the anxiety disorder with insomnia by recording the changes in sleep stage and the number of arousals in overnight electroencephalographic procedure.

      • 船舶原子爐의 硏究開發에 關한 考察

        蔡元錫 群山大學校 1994 論文集 Vol.21 No.-

        (1) Nuclear power is currently requested as substitute energy source of a fossil fuel and with a part of an anti-pollution policy in the earth. According to data in Norway, which was handed in 29th MEPC-IMO Marine Environment committee-in March of 1990, the pollution levels for specific gases include 2% for CO2 4% for SOx and 7% for NOx from international ships, that could make the earth warm and also acidic rain. And it's also important that the emissions of bilge water from ship pollute the sea. (2) The plant process quantity in nuclear ship can be influenced by the vibration of ship under stormy weather. ① The reactor power, temperature and pressure, the amount of flowing water level in plant process are changed at large. Especially a water level in steam generator and a pressurizer can be influenced largely by water surface and two-phase flow condition. According to a frequency-explanation of ship's vibration, in ship's heaving, rolling and pitching, heaving of the ship affects the fluctuation of water level largely in proportion to acceleration of up and down motion. ② The load variation which is caused by R.P.M of the main propulsion engine and its power in a ship managed by engineer's intention or natural condition makes much vibration in the ship. The periodical vibration of propeller and its racing also cause much vibration in the ship. (3) The vacuum of main condenser can be influenced by the temperature of sea water which is approximately from 5℃ to 30℃. The lower temperature of sea water marks, the higher vacuum-rate marks, which makes engine power increase. (4) As stated above, nuclear engineering should concentrate on study about more safe and easy-handling and economical marine reactor. The government should establish faithfully the policy about substitute energy.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼