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빔가르개에서 반사광과 투과광 사이의 위상 관계 고찰 및 간섭계 적용
손병우,최희주,박주은,차명식,Son, Byungwoo,Choi, Hee Joo,Park, Ju Eun,Cha, Myoungsik 한국광학회 2015 한국광학회지 Vol.26 No.2
진폭 분할식 간섭계에서는 입력 빔을 빔가르개(BS)로 분리하고 서로 다른 경로를 거쳐 전파하게 한 다음 두 빔을 중첩시켜 간섭 효과를 일으킨다. 본 논문에서는 손실이 없는 유전체 층들로 이루어진 BS에서 반사와 투과로 분리된 두 광파 사이의 위상관계에 대해 연구하였다. 적절한 기준면에 대해 위상을 정의하면 BS의 층 구조에 관계 없이 투과광과 반사광 사이에는 일정한 위상차가 있다는 것을 알 수 있었다. 이 결과는 일반적인 Stokes 관계식으로 명백히 주어지나, 본 논문에서는 대표적인 대칭적/비대칭적 구조를 가진 두 BS 층에 대해 수치적으로 이를 증명해 보았다. 이 위상 관계로 인해 간섭계에서는 출력광의 중첩 상태(보강 혹은 상쇄 간섭)가 결정되고, 빛 에너지는 보존된다는 당연한 결과를 얻을 수 있었다. In an amplitude-splitting interferometer, a beam splitter divides an input beam into two parts, which are superposed after propagating along separate paths, producing an interference effect. We have investigated the phase relation between the reflected and transmitted light waves at BS's made of lossless dielectric stacks. If we define the phases with proper reference planes, a definite phase relation exists, irrespective of the detailed structure of the layers in the BS. Although this results from the generalized Stokes relations, we have verified it numerically for two representative BS's with symmetric and asymmetric layer structures respectively. When we applied the phase relation to interferometers, we could determine the superposition state of the output beam (either constructive or destructive interference) for a general BS, and could verify that the light's energy was conserved.
孫炳宇 慶北大學校 醫科大學 1967 慶北醫大誌 Vol.8 No.1
It seems very important to know the nutritional status of prisoners who were detained for a prolonged period of time in prison, for the evaluation of nutrition and establishment of adequate nutritional policy of personers in future. The nutritional status of prisoners in Taegu Prison was studied on the compositions of nutrients of main and supplementary foods, amount of food intake and intestinal absorbability, total urinary nitrogen, nitrogen balance, changes in the body weight, various blood compositions and average thickness of subcutaneous fat, in randomly selected prisoners. For the evaluation of the caloric balance, the values of daily caloric requirement were determined by actual measurement of various energy expenditures including the basal metabolism, resting metabolism and work metabolism during various degree of activities. The results obtained are summarized as follows: 1) The basal metabolic rate in 60 prisoners is within normal ranges with an average of 41.3Cal./㎡/hr. and the B.M.R. is+3.7%. 2) The caloric value of the food given to the prisoners is generally adequate in those who are supplied by the prison ration, Class 1,2,3 and 4. However, the actual caloric intake in the moderate labor group shows a shortage of about 62 Calories per day. For instance, the carpenters require at least 3,416 Calories daily, but they are provided with Class 2 ration which is being supplied to a moderate labor group. They should be given Class 1 ration for this type of heavy work. 3) The measured caloric requirements reveal that the carpenters belong to a heavy labor group and the others to a light or moderate labor groups. 4)The major dietary supply in prisoners is provided with the main dish consisting of about 78% of carbohydrate, 16% of protein and 6% of fat. Thus the prisoner's food is in shortage of both protein and fat. 5) The main dish of prisoners is composed of 30% rice, 67% barley, and 3% bean. The absorbabilities of the dietary protein and fat are 75.8% and 74.2% respectively. 6) The total urinary nitrogen in 33 prisoners is 10.39gm/day in average and the nitrogen balance is mostly positive with an average of +2.41gm/day except in 4 subjects with negative balance. 7) The total serum cholesterol and the total serum protein in 41 prisoners are 118.1㎎% and 6.76gm% respectively. These values are lower than those of reported normal Koreans. The lower value of the total serum cholesterol is prbably due to the low fat intake. 8) The hemoglobin, red blood cell counts and hematocrit are close to the reported values in the poor Korean farmers. 9) The skin fold test of Allen in 140 prisoners shows 24.0㎜ (S.F.T.-40) in average which is lower than that of the reported normal Koreans.
孫炳宇 慶北大學校 醫科大學 1967 慶北醫大誌 Vol.8 No.1
This study was undertaken to evaluate the physical conditions such as blood pressure, pulse rate, respiration rate, vital capacity, maximal breathing capacity, maximal inspiratory and expiratory pressure, gripping power and back muscle power, in prisoners who have detained in Taegu Prison for a prolonged period of time by comparing with the reported values in normal Koreans or athletes. The results are summarized as follows: 1) Mean blood pressure with standard deviation in 268 prisoners are: systolic, 137.9±28.3㎜Hg; diastolic, 88.9±17.7㎜Hg. Pulse rates are: 66.8±9.31/min. Respiration rates are: 16.4±0.98/min. 2) In 71 prisoners, vital capacity is 4.48±0.56ℓ(BTPS); maximal breathing capacity, 124±1.5ℓ/min; maximal inspiratory pressure, 94.2㎜Hg; maximal expiratory pressure, 116.2㎜Hg. 3) In 155 prisoners, back muscle power is 133.1±23.1㎏; gripping power, average of right and left hand, 35.8±5.0Kg. 4) In 109 prisoners, index score of Harvard step-up test is 90.97±1.06. 5) The values of pulmonary function tests are generally lower than those of normal Koreans in carpenters, largely composed of long term prisoners, and prisoners engaging sedentary labor. The values of back muscle power and gripping power are slightly higher in prisoners engaging the ironwork, printing and painting, whereas lower in sedentary prisoners.