• 프린팅코리아
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• 통권1호
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• pp.74-76
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• 2002

• 프린팅코리아
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• 통권2호
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• pp.76-78
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• 2002

• The Korean Journal of Physiology
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• 제1권1호
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• pp.91-101
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• 1967

The maximal oxygen intake (MOI) was determined in 54 males (23 nonathletes, 10 basketball players, 8 hand ball players, 7 weight lifters and 6 long distance runners) and in 49 females (24 non-athletes, 16 basketball players and 9 volley ball players) by using a treadmill method outlined in Part I of the present investigation and the following results were obtained: (1) The maximal aerobic work capacity varied from the lowest value of 1,008 kg-m/min in female non-athletes to the highest value of approximately 2,000 kg-m/min in male basketball players and long distance runners. Values of other groups varied from 1,400 kg-m/min in male non-athletes and female athletes to 1,800 kg-m/min in male hand ball players. (2) The MOI per unit body weight varied from the lowest value of 41.3 ml/min/kg in female non-athletes to the highest value of 67.6 ml/min/kg in male long distance runners. Values of other groups were in the order of 47 to 55 ml/min/kg. (3) The heart rate during maximal aerobic work performance varied from the lowest value of approximately 180 per min in female basketball players and male long distance runners to the highest value of 190 or above in nonathletes of both sexes. (4) An estimate of oxygen debt as measured during 15 minutes following the maximal work was 3.841 in female non-athletes, 4.681 in female athletes, 5.561 in male non-athletes and 6.321 in male athletes. These results indicate that the MOI per unit body weight as well as the oxygen debt of Korean non-athletes were comparable to, while corresponding values of Korean athletes were considerably lower than, those of other countries such as Japan, the United States of America and Europe.

• 대한방사선기술학회지:방사선기술과학
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• 제38권1호
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• pp.17-21
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• 2015

소아백혈병의 치료방법 인 조혈모세포이식법의 전처치 방법으로서 항암제와 함께 대표적으로 사용되고 있는 전신방사선조사에 대하여 치료를 시행하기 전 정량적인 인체장기에 대한 선량을 평가하고자 하였다. 모의실험 프로그램 MCNPX를 사용하여 가상의 공간에서 소아용 모의피폭체를 대상으로 조직보상체의 재질을 변화시켜 실험을 진행하였다. 그 결과 첫째, 평균피부선량은 조직보상체의 재질에 따라 Plexiglass는 74.60 mGy/min, Al은 73.96 mGy/min, Cu는 72.26 mGy/min, Pb의 경우 67.90 mGy/min을 보였다. 둘째, 심부선량은 조직보상체 재질에 상관없이 갑상선, 생식선, 소화기계, 머리, 폐, 신장의 순으로 높게 나타났다. 끝으로 조직보상체와 환자와의 거리는 50 cm 이격시켰을 때가 이상적인 것으로 분석되었다. 본 연구결과를 토대로 할 때, 조직보상체 Al, Cu, Pb은 현재 사용되고 있는 Plexiglass 재질을 대체할 수 있을 것으로 판단된다.

• 대한영양사협회학술지
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• 제7권1호
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• pp.38-49
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• 2001

This study was designed to analyze the dietetic practitioner's job in the over 600-ed hospitals in korea and to assess their labor time spent and staffing need indices. The actual time spent and expected labor time spent on dietitians' activities were investigated and the proper dietic staffing needs in the hospitals was also calculated. A job analysis questionnaires were developed and mailed to 20 hospitals. Completed questionnaires were received form 12 hospitals for a response rate of 60%. The followings are summary of the results. 1. The jobs dietitians at the hospitals were classified into the following 7 areas, direct patient care, indirect patient care, therapeutic patient care, education & counseling, meeting & research, delay & movement, and administration & food services. 2. The actual time spent on dietetic practice was 48.6 hours and expected labor time spent was 99.2 hours, Therefore, the proper time required to conduct classified jobs was 2.1 times higher than the time spent. Especially, the time required for performing clinical nutrition services including direct patient care, indirect patient care, therapeutic patient care was significantly higher than the time needed. 3. The average times required for the direct patient care was 1334.6min, for the indirect patient care was 796.3min, for the therapeutic patient care was 1634.5min, for the education & counseling was 265.2min, for the meeting & research was 366.7min, for the delay & movement was 327.3min, and for the administration & food services was 1170min. The staffing need indices was 12.3. As a conclusion, the standardized job descriptions for the dietitian to carry out their job at the hospital should be established. And the clinical dietitians as nutrition professionals have to be recruited to provide systematically hospitalized patients with medical nutrition therapy at each hospital.

• 공업화학
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• 제26권4호
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• pp.463-469
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• 2015

수용액상의 비스페놀 A (BPA)를 HPLC 분석기기를 이용하여 검량하였으며, 이것을 Acetonitrile 분석법과 KDP solution 분석법으로 정립하였다. 본 실험에서는 오존 단독공정과 오존/pH 10 공정, 오존/과산화수소 공정을 이용하여 BPA의 분해특성을 비교 고찰하였다. 오존 단독공정을 사용하였을 때, 10 mg/L BPA는 60 min 동안 약 70% 제거되었으며, 오존/pH 10 공정 및 오존/과산화수소 공정은 각각 40 min과 60 min만에 BPA를 완전히 제거하였다. 그러나 60 min 동안의 반응에서 TOC 및 HPLC 분석결과를 바탕으로 도출한 최종 분해효율은 오존/과산화수소 공정이 가장 우수한 것으로 나타났으며, 오존/pH 10 공정은 오존 단독공정에 비해 TOC 및 반응 부산물의 농도가 오히려 높은 것으로 나타났다. 수중의 유기탄소를 $CO_2$ 및 $H_2O$로 산화시키는 효율은 오존/과산화수소 공정이 가장 효과적인 것으로 나타났다.

• 대한환경공학회지
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• 제28권9호
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• pp.949-954
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• 2006

본 연구는 Water jet 플라즈마 반응기를 개발하고 탄화수소 연료의 개질을 통한 합성가스 생산의 최적 조건을 연구하였다. 연료는 프로판을 사용하였다. 그리고 수표면에 아크 방전을 가하여 플라즈마를 발생하였다. 수표면의 방전은 short-wave, UV radiation 등을 발생시키는 이점을 가지고 있어 물의 생물학적 기리고 화학적 처리에 이용할 수 있다. 전력, Water jet의 유량, 전극간격 뿐만 아니라 처리시간에 따른 영향에 대해 연구하였다. 변수별 연구는 전력을 $0.18{\sim}0.74$ kW, Water jet의 유량을 $38.4{\sim}65.6$ mL/min, 전극간격을 $5{\sim}15$ mm 그리고 처리시간을 $2{\sim}20$ min에 따라 수행하였다. 상기 변수별 연구에서 0.4 kW, 53.9 mL/min, 10 mm and 20 min일 때 수소는 최대 61.6%를 나타냈으며 이 때 중간생성물의 농도는 6.1% 그리고 프로판 전환율은 99.8%를 나타냈다.

• 한국지역사회생활과학회지
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• 제13권3호
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• pp.53-68
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• 2002

The purposes of this study were to explore amount of time use for paid work house work, child caring and leisure spent by adults and to explain its influencing factors. Tobit model was used to analyze the factors of time use because the amount of time use was a limited continuous variable. The results of this study were as follows: 1) Amount of time spent for paid work per day by adults was found to be 349 min. for men and 185 min. for women. Amount of time spent for house work was found to be 19min. for men and 155 min. for women. Amount of time spent for child caring was found to be 5min. for men and 40 min. for women. Amount of time spent for leisure was found to be 285 min. for men and 266 min. for women. 2) Time use for paid work was found to be significantly influenced by householder, age, time limit and paid worker for men and householder, time limit and paid worker for women. Time use for house work was found to be significantly influenced by age, time limit and paid worker for men and householder, age, marital status and paid worker for women. Time use for child caring was found to be significantly influenced by presence of kids and marital status for men and house, presence of kids, marital status and paid worker for women. Finally, Time use for leisure was found to be significantly influenced by car, time limit and paid worker for men and house, presence of kids, marital status, time limit and paid worker for women.

• 한국초지조사료학회지
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• 제9권2호
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• pp.88-95
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• 1989

This experiment 'was conducted to investigate the grazing cattle's palatability by the method of grazing time on the pasture dominated orchardgrass and on the pasture dominated perennial ryegrass from June to October, 1987. The experiment was carried out on the experimental field at Livestock Ex- Experiment Station. The results are summarized as follows: 1. In summer, the grazing time on the pasture dominated orchardgrass increased in 49.7 min, 57.4 min, 102 min, 118.7 min, respectively as sward height decreased in 50 cm, 45 cm, 35 cm, 23 cm, respectively and their correlation coefficiet was -0.9722*(P <0.05). 2. In autumn, the grazing time on the pasture dominated perennial ryegrass decreased in 182 min, 98.5 min, 49.4 min, 31.9 min, respectively as sward height decreased in 43 cm, 34 cm, 25 cm, 18 cm, respectively and their correlation coefficient was 0.9684*. (P <0.05). 3. Grazing time increased as sward height increased on the pasture dominated perennial ryegrass because the composition rate of orchardgrass and red clover which were palatability on the plot of the high sward height.was many. It was suggested that the factor that could be first related to palatability on mixture pasture was the factor of species than the factor of sward height. 4. When the eating rate on the plot of the low sward height was over 55% as the grazing day went by, it gradually decreased because the eating rate on it was high but the fresh yield was low. After all it seemed that it affected palatability because forage availability on the plot of the low sward height was degenerating.

• 한국결정성장학회지
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• 제11권5호
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• pp.197-202
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• 2001

여러 조건에서 제조된 poly(ethylene terephthalate) 필름 시편들로부터 열처리 및 냉연신 조건이 시편의 물성에 미치는 영향을 조사하였다. 상온에서 만능시험기을 사용하여 미열처리 및 열처리된 시편들을 0.5에서 500 mm/min의 cross-head 속도로 단계적 연신을 행한 결과, 약 50, 72 및 $129^{\circ}C$에서 열처리된 시편들의 응력-변형 곡선에서는 응력 진동이 발생되지만, 약 $83^{\circ}C$에서 30분 동안 열처리된 시편의 응력-변형 곡선에서는 응력 진동이 발생되지 않음을 알 수 있었다. 시차 주사 열량기를 사용하여 $10^{\circ}C$/min의 승온 속도에서 열분석을 행하였고, 시편들의 유리전이온도, 결정화 피크, 용융 잠열, 결정화도를 측정하였다. 1 Hz의 주파수대에서 $1.5^{\circ}C$/min의 승온 속도로 multiple-function internal friction pendulum으로 시편들의 동적 기계분석도 수행하였으며, 미열처리, 열처리 및 연신 시편들의 순서대로 탄성계수 값이 증가함을 알 수 있었다.