• 제목/요약/키워드: GI trouble

검색결과 45건 처리시간 0.025초

원자력발전소 습분분리재열기 튜브 원격장검사 기술 개발 (Development of Remote Reld Testing Technique for Moisture Separator & Reheater Tubes in Nuclear Power Plants)

  • 남민우;이희종;김철기
    • 비파괴검사학회지
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    • 제28권4호
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    • pp.339-345
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    • 2008
  • 원자력발전소 열교환기 튜브의 대부분은 구리, 티타늄, 인코넬합금 등의 비자성체로 제작되어 있으나 2차 터빈계통의 습분분리재열기(moisture separator & reheater), 급수가열기 등의 튜브는 고압, 고온 등의 열악한 운전조건에서 상대적으로 고온 강도가 우수한 탄소강 또는 페라이트계열 스테인레스강 등의 자성체로 제작되어 있다. 특히 습분분리재열기 튜브와 같은 열교환 매체가 증기인 경우 열전달 능력을 증가시키기 위해서 핀 튜브를 사용한다. 탄소강 또는 페라이트계열 스테인레스강 등의 자성체 튜브는 고온, 고압에서 강도가 우수하지만 운전 중에 증기 커팅, 침식, 기계적 진동 마모, 응력부식균열 등의 사용 중 결함이 발생하여 발전소 정상운전에 지장을 초래할 수 있기 때문에 전열관의 건전성 평가를 위한 주기적인 비파괴검사의 수행이 필요하다. 하지만 자성체 열교환기 튜브는 투자율이 높은 전기적 특성으로 인하여 기존의 와전류검사기술로는 비파괴검사가 어렵기 때문에 원격장검사기술을 적용해야 한다. 따라서 본 연구에서는 원자력발전소 습분분리재열기세관의 현장적용에 필요한 검사기술을 개발하기 위해서 원격장탐촉자, 인공결함 시험편 및 탐촉자 구동장치를 설계하였으며, 이를 활용하여 발전소 현장 검사에 적용하였다.

코아 식생매트가 국화 'White Miri'의 생육에 미치는 영향 (Effects of Different Coir Tapes as Plant Mat on the Growth in Dendranthema grandiflorum 'White Miri')

  • 남유경;이진희;정기령
    • 화훼연구
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    • 제19권4호
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    • pp.192-196
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    • 2011
  • 화단용 국화에 적합한 식생매트를 개발하기 위하여 coir tape를 이용한 6가지 처리조건의 매트에 Dendranthema grandiflorum 'White Miri'를 삽목한 결과, 매트 두께가 15 mm인 무토양 C처리구에서는 대부분의 삽수가 고사하였으나 동일한 두께의 매트에 직경 3 mm의 구멍을 뚫어 토양을 충전한 D처리구와 10 mm 두께의 매트 사이에 20 mm 두께의 상토가 들어있는 F처리구에서 생육이 가장 양호하였다. 생존율은 각각 식생매트 두께가 10과 15mm인 무토양 처리구인 A와 C처리구에서 가장 저조한 56.3과 20% 결과를 나타낸 반면, D와 F처리구에서 각각 100과 90%의 높은 생존율을 나타냈다. 초장도 처리구별 결과가 생존율의 그것과 비슷하게 A와 C처리구에서 가장 낮은 값인 7.97과 7.15 cm를 나타냈고 D와 F처리구에서 각각 9.74와 9.80 cm의 높은 값을 나타냈다. 이와 같은 결과를 바탕으로 실제로 화단조성에 국화매트를 적용할 경우에 F처리구보다 상대적으로 토양의 양이 적게 들어가고 부정근 유도에 최소한의 토양을 요구하는 D처리구가 매트의 제작 및 이동의 편의성을 위해서는 실용적일 것으로 여겨진다.

재조합 단백질 A 제조공정시료의 안정성실험에 관한 연구 (Study on stability test of in process sample of recombinant Protein A)

  • 김유곤;이우종;원찬희;신철수
    • 분석과학
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    • 제25권6호
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    • pp.483-491
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    • 2012
  • 본 연구는 재조합 단백질 A를 생산하기 위한 정제공정 즉, 생산공정은 양이온교환칼럼(SP)과 음이온교환칼럼(Q)을 통하여 정제한 후 최종 재조합 단백질 A를 생산하게 되는데, 공정단계별로 생산된 시료를 바로 다음단계 공정으로 가지 못하는 경우 보관을 하는데 있어 안정성 확보 문제를 가지고 있다. 이에 본 연구에서 생산공정에서 생산된 시료를 보관 했을때 적정 보관조건과 시간을 알아보고자 하는데 목적이 있다. 즉, 공정시료의 저장방법 및 저장기간 설정과 경시변화에 따른 품질의 안정성의 평가를 목적으로 한다. 실험항목은 엔도톡신, SDS PAGE, HPLC 순도 그리고 농도이다. 실험결과 양이온교환칼럼 통과 후 냉장($4^{\circ}C$), 실온보관에서 SDS PAGE는 major band, 엔도톡신은 5.0 Eu/mg이하, 농도에서는 평균 8.21~8.24 mg/mL, RSD% 0.10~0.62%, 그리고 HPLC 순도 214 nm에서 평균 99.24~99.37%, RSD% 0.22~0.29%, 280 nm에서 평균 89.72~89.80%, RSD% 0.62~1.26%로서 다소 안정된 결과를 나타내었다. 음이온칼럼통과 후 냉장($4^{\circ}C$), 실온보관에서 SDS PAGE major band, 엔도톡신 0.5 Eu/mg이하, 농도는 평균 5.59 mg/mL, RSD% 0.03~0.10% 그리고 HPLC 순도 214 nm에서 평균 99.74%, RSD% 0.10~0.11%, 280 nm에서 평균 96.16~96.85%, RSD% 0.72~1.13%의 결과를 보였다. 상기의 실험결과로 재조합 단백질 A 제조공정시료의 실온과 $4^{\circ}C$에서 7~8 일 그리고 20~21 일 보관은 물질분해 특성이 없이 안정성이 확보 되었다는 결론을 얻을 수 있었다.

농촌(農村) 주민(住民)들의 의료필요도(醫療必要度)에 관(關)한 연구(硏究) (A Study Concerning Health Needs in Rural Korea)

  • 이성관;김두희;정종학;정극수;박상빈;최정헌;홍순호;라진훈
    • Journal of Preventive Medicine and Public Health
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    • 제7권1호
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    • pp.29-94
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    • 1974
  • Today most developed countries provide modern medical care for most of the population. The rural area is the more neglected area in the medical and health field. In public health, the philosophy is that medical care for in maintenance of health is a basic right of man; it should not be discriminated against racial, environmental or financial situations. The deficiency of the medical care system, cultural bias, economic development, and ignorance of the residents about health care brought about the shortage of medical personnel and facilities on the rural areas. Moreover, medical students and physicians have been taught less about rural health care than about urban health care. Medical care, therefore, is insufficient in terms of health care personnel/and facilities in rural areas. Under such a situation, there is growing concern about the health problems among the rural population. The findings presented in this report are useful measures of the major health problems and even more important, as a guide to planning for improved medical care systems. It is hoped that findings from this study will be useful to those responsible for improving the delivery of health service for the rural population. Objectives: -to determine the health status of the residents in the rural areas. -to assess the rural population's needs in terms of health and medical care. -to make recommendations concerning improvement in the delivery of health and medical care for the rural population. Procedures: For the sampling design, the ideal would be to sample according to the proportion of the composition age-groups. As the health problems would be different by group, the sample was divided into 10 different age-groups. If the sample were allocated by proportion of composition of each age group, some age groups would be too small to estimate the health problem. The sample size of each age-group population was 100 people/age-groups. Personal interviews were conducted by specially trained medical students. The interviews dealt at length with current health status, medical care problems, utilization of medical services, medical cost paid for medical care and attitudes toward health. In addition, more information was gained from the public health field, including environmental sanitation, maternal and child health, family planning, tuberculosis control, and dental health. The sample Sample size was one fourth of total population: 1,438 The aged 10-14 years showed the largest number of 254 and the aged under one year was the smallest number of 81. Participation in examination Examination sessions usually were held in the morning every Tuesday, Wenesday, and Thursday for 3 hours at each session at the Namchun Health station. In general, the rate of participation in medical examination was low especially in ages between 10-19 years old. The highest rate of participation among are groups was the under one year age-group by 100 percent. The lowest use rate as low as 3% of those in the age-groups 10-19 years who are attending junior and senior high school in Taegu city so the time was not convenient for them to recieve examinations. Among the over 20 years old group, the rate of participation of female was higher than that of males. The results are as follows: A. Publie health problems Population: The number of pre-school age group who required child health was 724, among them infants numbered 96. Number of eligible women aged 15-44 years was 1,279, and women with husband who need maternal health numbered 700. The age-group of 65 years or older was 201 needed more health care and 65 of them had disabilities. (Table 2). Environmental sanitation: Seventy-nine percent of the residents relied upon well water as a primary source of dringking water. Ninety-three percent of the drinking water supply was rated as unfited quality for drinking. More than 90% of latrines were unhygienic, in structure design and sanitation (Table 15). Maternal and child health: Maternal health Average number of pregnancies of eligible women was 4 times. There was almost no pre- and post-natal care. Pregnancy wastage Still births was 33 per 1,000 live births. Spontaneous abortion was 156 per 1,000 live births. Induced abortion was 137 per 1,000 live births. Delivery condition More than 90 percent of deliveries were conducted at home. Attendants at last delivery were laymen by 76% and delivery without attendants was 14%. The rate of non-sterilized scissors as an instrument used to cut the umbilical cord was as high as 54% and of sickles was 14%. The rate of difficult delivery counted for 3%. Maternal death rate estimates about 35 per 10,000 live births. Child health Consultation rate for child health was almost non existant. In general, vaccination rate of children was low; vaccination rates for children aged 0-5 years with BCG and small pox were 34 and 28 percent respectively. The rate of vaccination with DPT and Polio were 23 and 25% respectively but the rate of the complete three injections were as low as 5 and 3% respectively. The number of dead children was 280 per 1,000 living children. Infants death rate was 45 per 1,000 live births (Table 16), Family planning: Approval rate of married women for family planning was as high as 86%. The rate of experiences of contraception in the past was 51%. The current rate of contraception was 37%. Willingness to use contraception in the future was as high as 86% (Table 17). Tuberculosis control: Number of registration patients at the health center currently was 25. The number indicates one eighth of estimate number of tuberculosis in the area. Number of discharged cases in the past accounted for 79 which showed 50% of active cases when discharged time. Rate of complete treatment among reasons of discharge in the past as low as 28%. There needs to be a follow up observation of the discharged cases (Table 18). Dental problems: More than 50% of the total population have at least one or more dental problems. (Table 19) B. Medical care problems Incidence rate: 1. In one month Incidence rate of medical care problems during one month was 19.6 percent. Among these health problems which required rest at home were 11.8 percent. The estimated number of patients in the total population is 1,206. The health problems reported most frequently in interviews during one month are: GI trouble, respiratory disease, neuralgia, skin disease, and communicable disease-in that order, The rate of health problems by age groups was highest in the 1-4 age group and in the 60 years or over age group, the lowest rate was the 10-14 year age group. In general, 0-29 year age group except the 1-4 year age group was low incidence rate. After 30 years old the rate of health problems increases gradually with aging. Eighty-three percent of health problems that occured during one month were solved by primary medical care procedures. Seventeen percent of health problems needed secondary care. Days rested at home because of illness during one month were 0.7 days per interviewee and 8days per patient and it accounts for 2,161 days for the total productive population in the area. (Table 20) 2. In a year The incidence rate of medical care problems during a year was 74.8%, among them health problems which required rest at home was 37 percent. Estimated number of patients in the total population during a year was 4,600. The health problems that occured most frequently among the interviewees during a year were: Cold (30%), GI trouble (18), respiratory disease (11), anemia (10), diarrhea (10), neuralgia (10), parasite disease (9), ENT (7), skin (7), headache (7), trauma (4), communicable disease (3), and circulatory disease (3) -in that order. The rate of health problems by age groups was highest in the infants group, thereafter the rate decreased gradually until the age 15-19 year age group which showed the lowest, and then the rate increased gradually with aging. Eighty-seven percent of health problems during a year were solved by primary medical care. Thirteen percent of them needed secondary medical care procedures. Days rested at home because of illness during a year were 16 days per interviewee and 44 days per patient and it accounted for 57,335 days lost among productive age group in the area (Table 21). Among those given medical examination, the conditions observed most frequently were respiratory disease, GI trouble, parasite disease, neuralgia, skin disease, trauma, tuberculosis, anemia, chronic obstructive lung disease, eye disorders-in that order (Table 22). The main health problems required secondary medical care are as fellows: (previous page). Utilization of medical care (treatment) The rate of treatment by various medical facilities for all health problems during one month was 73 percent. The rate of receiving of medical care of those who have health problems which required rest at home was 52% while the rate of those who have health problems which did not required rest was 61 percent (Table 23). The rate of receiving of medical care for all health problems during a year was 67 percent. The rate of receiving of medical care of those who have health problems which required rest at home was 82 percent while the rate of those who have health problems which did not required rest was as low as 53 percent (Table 24). Types of medical facilitied used were as follows: Hospital and clinics: 32-35% Herb clinics: 9-10% Drugstore: 53-58% Hospitalization Rate of hospitalization was 1.7% and the estimate number of hospitalizations among the total population during a year will be 107 persons (Table 25). Medical cost: Average medical cost per person during one month and a year were 171 and 2,800 won respectively. Average medical cost per patient during one month and a year were 1,109 and 3,740 won respectively. Average cost per household during a year was 15,800 won (Table 26, 27). Solution measures for health and medical care problems in rural area: A. Health problems which could be solved by paramedical workers such as nurses, midwives and aid nurses etc. are as follows: 1. Improvement of environmental sanitation 2. MCH except medical care problems 3. Family planning except surgical intervention 4. Tuberculosis control except diagnosis and prescription 5. Dental care except operational intervention 6. Health education for residents for improvement of utilization of medical facilities and early diagnosis etc. B. Medical care problems 1. Eighty-five percent of health problems could be solved by primary care procedures by general practitioners. 2. Fifteen percent of health problems need secondary medical procedures by a specialist. C. Medical cost Concidering the economic situation in rural area the amount of 2,062 won per residents during a year will be burdensome, so financial assistance is needed gorvernment to solve health and medical care problems for rural people.

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일개 여자대학교 학생의 최근 10년간 폐결핵 동태 및 임상경과에 관한 고찰 (The Epidemiologic and Clinical Study of Pulmonary Tuberculosis - Among Students at One Women's University for Recent 10 Years -)

  • 최희정;홍영선;오지영;천선희;김경자;김만애;민홍기;최삼섭;이기용
    • Tuberculosis and Respiratory Diseases
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    • 제42권4호
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    • pp.465-473
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    • 1995
  • 연구배경: 결핵은 국가관리사업이 시작되면서 점차 유병률이 감소하였으나 최근 당뇨, 악성종양 및 면역결핍 질환등이 늘어나면서 결핵이 중요한 국민보건문제로 대두됨에 따라 일개 여자대학교 학생을 대상으로 최근 10년간 폐결핵의 동태와 임상양상에 대한 변화를 알아보고자 하였다. 방법: 1983년에서 1992년까지 최근 10년간 이화여자대학교 보건소에 폐결핵으로 등록하여 치료관리를 받고 종결된 자 612명을 대상으로 진료기록을 근거로 후향적으로 분석하였다. 결과: 1) 전체 폐결핵 유병률은 1983년 0.63%에서 1992년 0.11%로 꾸준히 감소하였으며, 1학년 유병률 및 입학년도별 재학기간중 발생률은 1989년 이후 현저히 감소하였다. 2) 결핵발견 계기별 환자분포는 정기검진 45.6%, 입학신검 34.5%, 의료기관 12.0%, 보건소 진료 5.4%, 복학신검 2.5%의 순이었다. 3) 결핵의 과거력이 있었던 환자는 70명(11.4%)였고, 그 중 폐결핵의 재치료 환자는 61명(10.0%) 이였으며, 가족력은 612명중 142명으로 23.3% 였다. 4) 폐결핵의 중증도별 분포는 경중 530예(86.6%), 중등증 79예(12.9%), 중증 3예(0.5%) 였다. 5) 진단시 초기 증상으로 경한 호흡곤란이 30.1%, 발한 14.9%, 피로감 14.3%, 열감 11.7%, 객혈 8.2% 순이었고 객담, 기침 등의 중상은 적었다. 6) 치료기간은 경증군은 $10.6{\pm}3.6$ 개월, 중증증군이 $14.9{\pm}5.2$개월로 경종군에서 짧았다(p<0.05). 7) 치료약물의 부작용은 위장장애가 7.2%, 간염 1.8%, 피부발진 0.8% 였으며, streptomycin을 사용한 환자에서의 부작용은 9.1% 였다. 결론: 일개 여자대학교 학생을 대상으로 조사한 폐결핵 유병률은 전국 결핵 실태조사에서 발표된 대학생 유병률 및 20~24세 유병률에 비하여 현저히 낮았으며, 점차 감소되어 1989년 이후 현저히 감소되었고 치료효과도 바람직 하였다. 따라서 학생 집단에서의 정기적인 건강검진이 중요하며 이를 효율적으로 이용하기 위한 대책이 필요하다고 생각한다.

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