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서울 및 경기지역 노인의 신체적 건강 및 기능적 건강 실태 조사
최윤정;박유신;이상선 한양대학교 2010 韓國 生活 科學 硏究 Vol.30 No.2
This study was performed to assess anthropometric status, functional health and physical fitness among the elderly in Seoul and Kyunggi-do. Four hundred forty free-living elderly people(127 male, 331 female), aged 65 or more were interviewed by trained interviewers using structured questionnaires including demographic information, activities of daily living(ADL), instrumental activities of daily living(IADL), physical activity. And they measured anthropometic status and physical fitness. All the data were analyzed by student t-test, chi-square analysis using SPSS 9.0 version at p<0.05. The results can be summarized as follow : Of all the subjects, 46.3% were obesity, especially 92.4% of female were abdominal obesity. In functional health status, ADL score was 6.62±1.54, and IADL score was 25.94±6.92. Most of the subjects were difficult to walk and run. Female was a significantly higher flexibility and body fat than male(p<0.001), whereas female was a significantly lower muscular endurance than male(p<0.001).
정진일,민승식,노미정,박유신,남궁석 한국법과학회 2002 한국법과학회지 Vol.3 No.1
As the use of preservatives in foods has been increased, the misuse and overuse of preservatives are occasionally occurred. As the variety of food has risen, it is necessary to establish the screening method to determine preservatives in various foods. In this study, benzoic acid, sorbic acid, methyl p-hydroxybenzoate, ethyl p-hydroxybenzoate, i-propyl p-hydroxybenzoate, n-butyl p-hydroxybenzoate were analyzed by TLC and HPLC. In order to determine the recoveries from food, these preservatives were spiked into foods. As a result, solvent systems of 8:2:0.45:0.05 and 12:2:0.45:0.05 of pentane:acetic acid:chloroform:ethanol were appropriate for TLC analysis of preservatives. All preservatives were well resolved with solvent system of 2% ammonium acetate in 2.5% acetic acid:methanol (90/10~10/90) by HPLC. Direct extraction of preservatives from food proved to be more proper than distillation and extraction method. The recoveries by direct extraction method showed 93.7~104.6% of preservatives studied.
Validation of chlorophyll algorithm in Ulleung Basin, East/Japan Sea
Sin Jae Yoo,Hyun Cheol Kim,Jeong Ah Lee,Mi Ok Park 大韓遠隔探査學會 2002 大韓遠隔探査學會誌 Vol.18 No.1
The results of our observation in May 2000 indicated that the SeaWiFS algorithm (O`Reilley et al., 1998), which was adopted for OSMI data processing, overestimated the actual chlorophyll values. This was rather unexpected in that there were good reasons to expect that the bio-optical properties of East/Japan Sea belonged to Case 1 water and in such case, the OC2 algorithm would give unbiased estimates of actual chlorophyll a values. In November 2000, a cruise conducted bio-optical surveys in the same area. This time we added HPLC (High Performance Liquid Chromatography) method for measuring chlorophyll a concentration to the standard fluorometric method, which we have been using during the past. Fluorometric method with acidification is known to result in under/overestimation of chlorophyll values in many parts of the world oceans, while it is easier and cheaper than HPLC method. To our surprise, the comparison of HPLC chlorophyll and fluorometric chlorophyll values show that fluorometric values gave an underestimation up to 50%. This error was due to the presence of accessory pigments such as chlorophyll b. Considering this error, our previous result of May 2000 (Yoo et al., 2000) might have to be reinterpreted. Calculation of reflectance at 490 and 555nm, however, indicated that this is not still enough to explain the discrepancies.