병무청 징병검사 수검자에서 문신과 정신병리의 관계

이현기,천영훈,백영석,이혜진,이상열,Lee, Hyun-Ki,Cheon, Young-Hoon,Paik, Young-Suk,Lee, Hye-Jin,Lee, Sang-Yeol 대한불안의학회 2014 대한불안의학회지 Vol.10 No.1

Objective : This study was aimed to discover the correlation between those getting tattoos and their psychopathology relating to their delinquent behavior and emotional problems. Methods : Data for this study was collected from 19-year-old men who were receiving a physical examination for conscription at the Military Manpower Administration. 400 data sheets were collected among them. All of the subjects were evaluated on the following measures : sociodemographic variants, Juvenile delinquency scale, State-trait anger expression inventory, Beck depression inventory, State-trait anxiety inventory, and Positive affect and negative affect schedule. Results : In comparison with those without tattoos, those with a tattoo scored higher in the scales that were related to delinquency, anger, depression, and negative emotion. Furthermore, there were positive correlations between the number of tattoos and the scores for the Juvenile delinquent tendency and behavior scale as well as on the, State-trait anxiety scale. Conclusion : Those with tattoos had experienced anger, anxiety and depression more strongly in comparison with those without tattoos. These results recommend that tattooed males should be evaluated more on their regarding psychopathology compared to those without tattoos.

포장 콘크리트의 크기 효과에 따른 휨 강도 특성 분석에 관한 실험적 연구

이현기,오홍섭,심종성,심재원,Lee, Hyeongi,Oh, Hongseob,Sim, Jongsung,Sim, Jaewon 대한토목학회 2015 대한토목학회논문집 Vol.35 No.2

국내 포장 콘크리트의 품질관리는 KS 규정에 따라 재령 28일 휨 인장강도를 기준으로 평가되고 있으며, 현재 대부분 사용되고 있는 휨 인장강도 시험체는 상대적으로 큰 $150{\times}150{\times}550mm$ 시험체를 사용하고 있다. 이에 따라 시험체의 취급이 어렵고 양생조의 활용도가 떨어지고 있는 실정이다. 이에 따라 본 연구는 휨 인장강도 시험체를 줄여 이 같은 문제점을 해결하고자 하였다. 이를 위해 KS에서 규정되고 있는 시험체 크기의 내에서 로그 스케일에 따른 압축강도 및 휨 강도 시험을 실시하고, 시험체 크기를 변수로 설정하여 강도 및 표준편차를 분석하였다. 또한 이와 같은 실내 실험을 바탕으로 Bazant가 제안한 크기 효과 법칙(Size effect law, SEL)의 예측식을 사용하여 비교 분석함으로써 시험체 크기간의 상관성을 검토하여 콘크리트 포장의 품질 평가시 시험체 크기 축소를 위한 기초자료로 활용하고자 한다. The quality for the domestic pavement is evaluated based on flexural strength at the age of 28 days in accordance with KS regulation. Most specimens of the flexural tensile strength used currently are relatively large ones with a dimension of $150{\times}150{\times}550mm$. Accordingly, it is difficult to treat the specimens, and the utilization of a curing tank is low. In this paper, the study tried to resolve the problem by specimen size specified in the code. For this purpose, a flexural strength test was conducted according to the log scale within the specimen size specified by the KS. And, based on the results of this experiment, a comparative analysis was conducted using the prediction formula of Size Effect Law (SEL) proposed by Bazant to examine the correlation between specimen sizes, so as to use the result as basic data for the reduction of the specimen size in the quality evaluation of concrete pavement.

산업부산물 재활용 골재의 현황 및 문제점

이현기,Hyeongi Lee 한국건설순환자원학회 2023 한국건설순환자원학회지 Vol.18 No.4

미역의 아미노酸 및 비타민에 對한 營養學的 硏究

이현기,Lee, Hyun-Ki 대한화학회 1965 대한화학회지 Vol.9 No.4

Leuconostoc mesenteroides P-60, Lactobacillus arabinosus 17-5, Streptococcus faecalis R have been successfully used for the quantitative determination of sixteen amino acids in Undaria pinnatifida (Harvey) Suringar hydrolysate by alkaline and hydrolysis for succesive two hours from two to twelve hours, by means of microbiological assay. And thiamine and riboflavin were fluorometrically determinated by thiochrome and lumiflavin in powder (80mesh) of Undaria pinnatifida (Harvey) Suringar. The results were as follows: 1) Arginine contents was the highest in hydrolysate for two hours, but longer the hydrolysis, the more content Undaria pinnatifida was decreased. 2) The adequate contents of other amino acids were obtained by hydrolysis for six hours. 3) Growth check and improve of Lactobacillus were not identified in determination by microbiological assay for Undaria pinnatifida. 4) The following values were obtained in Undaria pinnatifida hydrolysate six hours: asparatic acid 466, arginine 230, lysine 317, histidine 74, isoleucine 242, methionine 202, phenylalanine 256, proline 231, threonine 231, tyrosine 161, valine 415, glycine 302, leucine 414, glutamic acid 625, cystine (5 hrs.) 53 and tryptophan (8 hrs.) 90mg per nitrogen one gram. 5) Protein score was 81 (limiting factor was isoleucine) and essential amino acids pattern was of satisfactory results. And methionine contained was higher than FAO value or milk value. 6) Sulphur contained amino acids (methionine plus cystine) contained in Undaria pinnatifida were 225mg/N-g. That was satisfactory results. 7) Absorption spectrum of wave length were not different 1% HAc from buffer-sol. (pH 6.8) in dilution for determination of riboflavin. Both methods might be suitable. 8) Thiamine and riboflavin contained in Undaria pinnatifida were ($B_1,\;82.51{\pm}1.1){\gamma}/N-g\;and\;(B_2,\;115.29{\pm}1.5){\gamma}/N-g.$.

폐FRP 단섬유와 폐유리 슬러지를 재활용한 고성능 건설재료 개발 방향

이현기,Lee, Hyeon-Gi 한국건설순환자원학회 2022 한국건설순환자원학회지 Vol.17 No.1

0.13μm Cu/Low-k 공정 Setup과 수율 향상에 관한 연구

이현기,장의구,Lee, Hyun-Ki,Chang, Eui-Goo 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.4

In this study, the inter-metal dielectric material of FSG was changed by low-k material in $0.13{\mu}m$ foundry-compatible technology (FCT) device process based on fluorinated silicate glass (FSG). Black diamond (BD) was used as a low-k material with a dielectric constant of 2.95 for optimization and yield-improvement of the low-k based device process. For yield-improvement in low-k based device process, some problems such as photoresist (PR) poisoning, damage of low-k in etch/ash/cleaning process, and chemical mechanical planarization (CMP) delamination must be solved. The PR poisoning was not observed in BD based device. The pressure in CMP process decreased to 2.8 psi to remove the CMP delamination for Cu-CMP and USG-CMP. $H_2O$ ashing process was selected instead of $O_2$ ashing process due to the lowest condition of low-k damage. NE14 cleaning after ashing process lot the removal of organic residues in vias and trenches was employed for wet process instead of dilute HF (DHF) process. The similar-state of SRAM yield was obtained in Cu/low-k process compared with the conventional $0.13{\mu}m$ FCT device by the optimization of these process conditions.

低蛋白營養에 있어서 成熟흰쥐의 Plasma 및 Erythrocytes Free Amino Acids에 대하여

이현기,Hyun-Ki Lee 대한화학회 1971 대한화학회지 Vol.15 No.2

An analysis of the free amino acid contained in the plasma and erythrocytes of the six groups of Wistar Strain male adult rats (body weight 200-300g) having fasted for sixteen hours was made by means of the HITACHI Amino Acid Autoanalyzer and the result of which was corrected with RC-24B TOMY Micro Hematocrit Centrifuge. There was a depression of the plasma and erythrocytes free amino acid level on the no-protein diet with ad libitum feeding. But on the 20% casein diet there was an elevation in the levels of free amino acid and consequently alanine, glysine, lysine, serine and arginine level in the erythrocytes and threonine, glutamic acid and taurine level in the plasma increased on the high protein diet. There was more plasma and erythrocytes free amino acid level on the 5% casein- 30% fat diet than on the 5% casein-no fat diet with pair-feeding. In comparison, on the low calorie diet more free amino acids were found in plasma than in erythrocytes, but on the higher calorie diet more free amino acids were found in the erythrocytes than in the plasma. On the 20% casein-30% fat diet with pair-feeding the erythrocytes free amino acids level increased but in plasma free amino acids level decreased. Such as an opposite result was given in plasma and erythrocytes free amino acids level. In the pair-fed four groups, erythrocytes per plasma generally increased in the rate of less than 10.0 as the calorie increased. The essential amino acid per non essential amino acid generally increased in the ratio as protein level and calorie increased, and that ratio range was from 0.2 to 0.7. And essential amino acid per non essential amino acid of plasma was higher than that of erythrocytes.

화력발전소와 제철소 발생 산업부산물을 활용하여 4시간 이내 개방강도 확보가 가능한 지반복원용 고유동성 채움재 현장적용 시스템 개발

이현기,Lee, Hyeon-Gi 한국건설순환자원학회 2021 한국건설순환자원학회지 Vol.16 No.3

후박 에탄올 추출물의 불안 및 인지기능에 대한 효과

이현기,이언정,Lee, Hyun-ki,Lee, Un-jung 대한한방내과학회 2015 大韓韓方內科學會誌 Vol.36 No.4

The bark of Magnolia officinalis has been used in traditional oriental medicine to treat a variety of mental disorders including anxiety and depression. The purpose of this study was to examine the effect of M. officinalis ethanol extract on stress-induced alterations in learning and cognitive function using a passive avoidance test (PAT) and also on anxiety-related behavior using the elevated plus-maze test (EPM) in female rats . The degree of Tyrosine hydroxylase (TH) in the region of the ventral tegmental area (VTA) and the locus coeruleus (LC) was measured using an immunohistochemical method. Corticosterone concentrations in serum were also measured. The ethanol extract from Magnolia officinalis was orally administered to female rats 30 minutes before evaluating their immobilization stress and anxiety-related behavior using an elevated plus-maze test and a passive avoidance test. Time spent in the open arms of the EPM increased in the M. officinalis-treated group compared with that of the saline-treated control group. In the passive avoidance test, the memory and cognitive function improved in the M. officinalis extract-treated group. M. officinalis extracts reduced elevated corticosterone concentrations in serum. Also, stress-induced TH increases were suppressed in the M. officinalis extract-treated group in the LC and the VTA region. These results suggest that M. officinalis might prove to be an effective anxiolytic anti-stress agent.

韓國女子大學生의 要求 Calorie 量과 榮養素攝取量에 對한 調査硏究 (第 1 報)

이현기,Hyun Ki Lee 대한화학회 1964 대한화학회지 Vol.8 No.3

금반 한국여자대학생 28명에 대하여 소비열량과 영양상황을 조사한 결과를 요약하면 다음과 같다. 1) 본조사에 있어서 여자대학생(20-21세)의 평균신장은 157.1cm, 체중 51.75kg, 체표면적 1.5m$^2$, 기초 대사량 1303Cal, 안정시 대사량 1563Cal, 활동대사량 469Cal, 1인 1일 총평균 소비열량(요구열량) 2032Cal였다. 한편 그들의 섭취열량은 1880Cal 로서 152Cal가 소비열량보다 부족하게 섭취되어져 있었다. 2) 단백질, 철분, 비타민B1, C는 요규량에 족하였고, Calorie, 지방, 탄수화물, 칼슘, 비타민 A, B2 는 섭취량이 부족하였다. 3) 총 54종의 식품에 의하여 먹혀졌으며 주로 식물성식품(83.7%)에 의하여 영양이 공급되었고 동물성식품은 16.2%밖에 공급되지 않았었다. 또한 수산동식물성 식품은 불과 7.4% 밖에 영양을 주지 못한 식성구성을 이루고 있었다. In order to know the Korean college women students expended calorie and nutritional status, a time study and a dietary survey were carried out for ten days, in January 1962, of 28 women students in Pusan Teachers College. (1) Average age of the subjects was 20 years, the height 157.1cm, weight 51. 75kg. and surface area 1.5m$^2$. (2) The structure of their expended energy, in average, was 1303 Cal for basal metabolism, 1563 Cal for quite metabolism, 469Cal for action metabolism and 2032 Cal for spended energy. While their ingested energy was 1880 Cal, which was 152 Cal less than the expenditure. (3) Their in take of protein, iron, vitamin B$_1$ and C were found more than the amount required, while calorie, fat, carbohydrate. calcium, Vitamin A and B$_2$ were less than the amount.