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대구지역 여대생들의 신체상에 따른 식행동 요인 분석 : Dietary restraint, Disinhibition and Hunger
김주남,김영지,이난희 영남이공대학 2000 論文集 Vol.29 No.-
In order to assess relationships between body image and eating behavior scores from the Three Factor Eating Questionnaire(dietary restraint, disinhibition, hunger), interviews were done on 181 foliate college students in Daegu area Among the students, underweight students were 59(32.6%), normal weight students were 104(57.5%) and obese students were 18(9.9%) by BMI standard. Body image and eating behavior scores were compared among underweight, normal, and obesity using one-way analysis of variance. The Pearson correlation coefficient was used to evaluate relationships. Relationship of Dietary restraint score and disinhibition score with groups(underweight, normal, obesity) were correlated(p<0.001, p<0.01, respectively). Statistically significant correlations were obtained between the respondent's current weight and both Dietary restraint score(p<0.01) and disinhibition score(p<0.05) : the correlation coefficients were respectively, 0.324, 0.165. College students are in early stage of adult life and their dietary attitudes, food behaviors and life style will continue to their later life. Therefore college students need more positive dietary attitudes to prevent and treat students obesity.
Activated carbons effectively purified by post-heat treatment under vacuum conditions
김주남,T. Nguyen Hoai Van,Bahk Gyung Jin,Kwak Kyungwon,Lee Kyung-Koo 한국탄소학회 2021 Carbon Letters Vol.31 No.5
The efect of heat treatment and vacuum conditions on the textural properties and electrochemical performance of commercially available activated carbons (ACs) was investigated. The AC after post-heat treatment was characterized by nitrogen adsorption–desorption, X-ray difraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy measurements. The ACs treated under vacuum conditions exhibit a higher specifc surface area and micropore surface area than those treated under nitrogen atmospheric pressure without signifcantly afecting the graphite structure of the AC. Under 800 °C temperature and vacuum conditions (AC-V800), the AC with the highest Brunauer– Emmett–Teller surface area of 1951.9 m2 g−1 (16.4% improvement relative to that of the original AC (1677.2 m2 g−1)) was obtained. This is attributed to the removal of oxygen-containing functional groups and volatile matters in the carbon by thermal treatment under vacuum conditions. Consequently, the electric double-layer capacitor using ACs treated under vacuum conditions (1 kPa) at 800 °C (AC-V800) shows considerably improved electrochemical performance in terms of higher specifc capacitance and better cycling stability at a high working voltage (3.1 V), compared to the nitrogen-treated and commercial ACs.