生體血의 保存環境과 腐敗産物에 依한 血中알콜濃度變化에 關한 硏究

張成吉,金英雲,柳在薰,吳世珍,權五星,朴世延 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

우리나라에서 발생한 만성 이황화탄소(Carbon Disulfide) 중독에 관한 고찰

장성훈,최재욱 大韓産業醫學會 1991 대한직업환경의학회지 Vol.3 No.1

One of the important occupational disease is the earbon disulfide poisoning in Korea. But there had been controversies about the diagnosis of CS₂poisoning in relation to Workers Compensation. We reviewd the CS₂poisoning cases occurred in one viscose rayon factory and the diagnostic methods of CS₂poisoning in Korea. The major clinical apperance of the CS₂poisoning in Korean is CNS damage (34.3%-87.5%), PNS damage (34.2-100.0%), ophthlamoogicae abnormality (31.6-87.5%), and renal damage (23.7-50.0%). This aspect is similiar to those of Japan rather than those of Western European. Diagnostic method of CS₂poisoning in legal periodic examination has to be amended. The future study will be evaluation of health effect and early diagnostic techniques about low concentration CS₂exposure.

고강도 콘크리트 기둥부재의 횡보강효과 산정에 관한 연구

장일영,박훈규,송재호 金烏工科大學校 1998 論文集 Vol.19 No.-

High-strength concrete represents a rather recent development in concrete materials technology. In recent years, a considerable amount of research work has been carried out on the mechanical and structural properties of high-strength concrete. However, there has been little research on the behavior of hight-strength concrete columns laterally reinforced with square ties and subjected to compressive loading. With the addition of transverse reinforcement which lead to triaxial compressive state, ductility behavior of high-strength column member shall be increased. In this study, rational quality and quantity evaluations were made to investigate the ultimate strength and strain ductility by confinement effect of tie reinforced hight-strength concrete columns subject to uniaxial loads. Concrete failure theory at the triaxial compressive state and statistical results based on conventional experimental data were applied for this propose. Up to 185 columns, tested under monotonically increasing concentric loading, were evaluated in terms of strength and strain ductility. Analytical results show that confinement stress, maximum compressive strength, and increase of strain equations were developed with the consideration of concrete strength, yield strength, spacing, volumetric ratio, and configurations of tie reinforcement.

운동과 아미노산 대사

장재훈,김정규 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5

The effects of Pre-exercise BCAA injection on amino acids levels and exercise performance. The subjects of present study were 10 university students. All subjects participated in VO₂ max test to calculate their 75% VO₂ max workload with BCAA injection and without BCAA injection. All exercise test were continued until subjects stopped because of fatigue. There were no big changes in the total exercise performance between BCAA injection experimental conditions. In the blood isoleucine, leucine, arginine, and phenylalanine concentration, there were no significant differences between BCAA injection experimental conditions(p>.05). The blood glutamate concentration was decreased following exercise, and end of exercise were a little bit increased. The blood alanine concentration was increased and there were significant differences at the end of exercise between BCAA injection experimental conditions(p<.05). The blood ammonia concentration was increased during exercise, but there were no significant differences between BCAA injection experimental conditions(p>.05). In this study, there was no positive effect of BCAA injection as a ergogenic aids and pre-exercise BCAA injection might be lead to premature fatigue.

서로 다른 훈련 형태가 비만 어린이의 운동능력과 체구성비 및 혈중 지질 성분 변화에 미치는 영향

장재훈,김정규 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

This study analyzed the comparative effect of Cooper exercise and continuous aerobic exercise for 10-12-year-old children with obesity for 60 minutes daily, three times a week for 12 weeks. The selected research participants were 76 children consisted of 54 boys and 22 girls with the %fat rate over 30% and were checked for the BMI, and %fat for the obesity index and blood lipid component for TC, TG, HDL-C, LDL-C and TC/HDL before and after the program, A 12-minute running was exercised for cardiorespiratory endurance, The intensity level of HRmax 55%-65% with the Karvonen formula measured the target heart rate for the exercise, The continuous aerobic exercise was performed for 40 minutes during the main exercise, and Cooper exercise was carried out by having the research participants carry a sand bag weighing 5% of theft body weight, A two-minute dynamic break was allowed after every 12-minute exercise. The repetitive measurement value for the pre- and post-programs was analyzed for the changing factors among the groups by using the comparative t-test analysis. A significant decrease occurred between the two groups as the result of the exercise program, weight, changes in the rate of the body formation for obesity; however, no statistical significance was resulted among different exercises, Further, the LBM was increased for every group but no statistical significance was supported, All the comparative groups showed a significant increase; however, the LBM was not significantly increased according to the statistics. The change in the blood lipid component significantly decreased for both groups; but it was significantly increased for the HDL-C, For the case of the comparative group, a significant increase was resulted; while a significant drop was evidenced for the HDL-C. For the change in the cardiorespiratory endurance, statistically significant increase was observed for the continuous exercise group and the Cooper exercise group while the comparative group showed no meaningful changes. As a result, an exercise program can significantly improve the changing factors for body shape and body formation of the children with obesity, and effectively play a role for the diseases related to arteriosclerosis and coronary heart disease. No significant difference between the two exercise groups entails a necessity for a long-term program when designing an exercise program for children with obesity, rather than a short-term program according to nutrient supply and exercise mode considering the fact that they are children in grow.

IMT-2000 기지국용 이중 편파를 위한 광대역 단일 소자 안테나 설계 및 특성 개선

장원호,박주성,태재훈,이윤현 한국항행학회 2002 韓國航行學會論文誌 Vol.6 No.3

본 논문에서는 편파 다이버시티 특성을 갖는 이중 편파(Dual-Polarization)방식의 INT-2000(1.885㎓-2.17㎓)기기국용 안테나에 사용할 수 있도록 기존 Folded Dipole안테나의 특성을 개선하였다. 제작된 안테나는 PCB기판에 몰디드 다이폴 안테나 구조에 적층 형태를 갖는 마이크로 스트립 안테나로서 각 단자별 반사게수가 -20㏈ 이하, 이중 편파 구조에서 중요한 규격인 단자간 분리도는 -20㏈ 를 가지며, 이들은 전 대역에서 약 7 dBi 이상의 특성을 보였다. Design and characteristic improvement of existing folded dipole antenna is presented to adopt W-CDMA(1.885~2.170 ㎓) wideband antenna radiators. The antenna structure has +/- 45 degrees dual polarization. In order to overcome the narrow bandwidth and low gain characteristic typical of the microstrip antenna, double layered structure was employed. The antenna achieved below -20 ㏈ reflection coefficients each ports. -20 ㏈ of port isolation, above 7 dBi of gain, providing evidence that the proposed design can be used in the W-CDMA service frequency band antenna.

植物凝集素 Dolichos lablab L.로 分類된 사람 血淸型에 관한 硏究

張訓梓,文國鎭 고려대학교 의과대학 1988 고려대 의대 잡지 Vol.25 No.1

Since the introduction of phytohemagglutinin (PHA) by Stillmark in 1898, PHA contributed to modicolegal field with new classification of blood types by their agglutination activities to human red blood cells and some of them have been used as lectins instead of antisera. Recently there were reported human serum types classified by their inhibition properties to agglutination reaction of panphytagglutinins with various red blood cells. To classify the serological relationships of human serum types classified by their agglutination activities to cat and rabbit red blood cells, and by their agglutination inhibition properties to D. lablab extract with cat and rabbit red blood cells, agglutination test and agglutination inhibition test with 1409 human sera were carried out. The results could be summarized as follows: 1. Human sera were classfied by their agglutination activities to cat red blood cells, and all rabbit red blood cells were agglutinated by human sera. 2. Human sera were also classified by their agglutination inhibition properties to D. lablab extract with cat and rabbit red blood cells and no serological relationship were demonstrated between them. 3. There were serological relationships between the human serum types classified by their agglutination activities and by their agglutination inhibition properties mentioned. 4. Human sera could be classified into 8 types by combination of their agglutination activities and by their agglutination inhibition properties to D. lablab extract with cat and rabbit red blood cells.

韓國人의 各 臟器組織中 靑酸鹽의 微量分布에 關한 硏究(Ⅱ)

張成吉,金恩浩,金英雲,李鎭勳,柳在薰,權五星,金明德,吳世珍,金由那 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

植物凝集素 Celosia argentea L. 의 免疫血淸學的 性狀에 關한 硏究

張訓梓 大韓法醫學會 1989 대한법의학회지 Vol.13 No.1

Extracts of ground seeds of Korean Celosia argentea L. were prepared in the usual manner, thereafter the agglutination tests with washed red blood cells and whole blood wee carried out. As a result, author demonstrated that washed red blood cells were markedly agglutinated by C. argentea L. extract, while whole blood was agglutinated in a small number. In the first experiment on a series of 291 blood specimen, washed red blood cells were agglutinated 278 (95.53%), failed 13 (4.47%), while the whole blood was agglutinated 8 (2.75%), failed 283 (97.25%). Since such differences in reactivity were observed, agglutination inhibition test of Celosia extracts by human serum was performed and revealed that by the all sera of 12 of agglutination positive with whole blood, the agglutination of C. argentea L. extracts were completely inhibited, however 429 sera of agglutination negative with whole blood revealed that 414 (96.5%) was inhibitor and 15 (3.5%) was non-inhibitor.

GMDP 신경망 알고리즘과 PID 제어기를 이용한 효율적인 PLANT 제어에 관한 연구

장진청,설재훈,장종승,추연규,임영도 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2

Adapative control theory or parameter tuning of PID controller is mainly limited in linear systems. But in this paper, using a nonlinear mapping capability of NNS, we derive a realtime tuning method of PID controller based on a Back-Propagation method of single GMDP NN. A variety of neural models, especially higher-order networks, are known to computationlly powerful for complex application. While they have advantages over traditional multilayered perceptrons, the uniformity in their network structures, learning algorithms and loop time creates practical problems. Thus this paper evaluates the capability between MLP and GMDP for performing velocity control. Backpropagation is applied to the GMDP as learning rule.