전송율 향상을 위한 다단계 상호연결망

신용태,이철희,조민수 崇實大學校 生産技術硏究所 1996 論文集 Vol.26 No.1

This paper proposed two Multi-statge Interconnection Network(MIN) that had multiple outlet to improve throughput. These proposed MINS were made of Clos MIN, well known Non-blocking MIN. These proposed MINs were called ECFS(Expanded Clos Switch Fabric) adn TCSF(Tandem Clos Switch Fabric). ECFS was consist of expanded number of switchs for multiple oulet. TCSF was consist of serial Clos MIN for multiple outlet. Performance evaluation of these proposed MINs was calculated arrival probability of packet through the MIN. In teh result, these proposed MINs with multiple outlet had higher throughput than existed MIN with single outlet. We know the fact that as the outlet of MIN increase, throughput of MIN increase.

Alcohol extract of Geum Chung Cho alleviates alcohol-induced short-term memory impairment in gerbils

Han-Sam Cho,Tae-Woon Kim,Sang-Seo Park,Mal-Soon Shin,Jae-Min Lee,Eun-Sang Ji,Chang-Ju Kim 한국운동재활학회 2015 한국운동재활학회 학술대회 Vol.2015 No.10

Chronic ethanol consumption leads to memory impairment and also induces brain damage. The hippocampus has been particularly regarded as a possible target organ of alcoholic intoxication, since this structure plays a prominent function in memory processes. Cordyceps has been used as a traditional medicine in Asian countries for a long time. Different types of Cordyceps extract were reported to have various pharmacological activities including anti-tumor, anti-inflammatory, anti-viral, and immune modulatory effects. Guem Chung Cho is an artificial cultivated Cordyceps, and was supplied from GCordy (Seoul, Korea). Ethanol extract of Cordycep (50 g) was made by rotary evaporate, and resulting powder 8.29 g was obtained (yield 17%). In the present study, we investigated the effects of ethanol extract of Geum Chung Cho on short-term memory, cell proliferation and apoptosis in the hippocampus of ethanol-treated gerbils. The gerbils were divided into 5 groups (n = 10 in each group): Control group, alcohol-treated group, alcohol-treated and 0.001 mg/kg Geum Chung Cho-applied group, alcohol-treated and 0.01 mg/kg Geum Chung Cho-applied group, and alcohol-treated and 0.1 mg/kg Geum Chung Cho-applied group. Gerbils in the alcohol-treated groups were orally administered ethanol (1 g/kg) once a day for 2 weeks. Gerbils in the Guem Chung Cho-applied groups were orally administered Guem Chung Cho extract at each dosage 1 hour before ethanol consumption. Our results revealed that consumption of alcohol for 2 weeks deteriorated short-term memory, induced apoptosis, and inhibited cell proliferation, and reduced expressions of brain-derived neurotrophic (BDNF) and tyrosine kinase B (TrkB). However, Guem Chung Cho treatment alleviated alcohol-induced short-term memory impairment through enhancing cell proliferation and BDNF expression with inhibiting apoptosis in the hippocampus. Guem Chung Cho showed maximum effects at 0.1 mg/kg. Based on these results, alcohol extract of Guem Chung Cho may provide therapeutic value for the treatment of chronic alcohol-inducted brain injury. This study was supported by GCordy company.

디클로로메탄 폭로 광학렌즈 제조업 근로자들의 혈액성상 및 자각증상

조영채,이태용,이동배,박성민 忠南大學校 環境問題硏究所 1997 環境硏究 Vol.15 No.-

This study was performed to find out the changes of hematological values, enzyme activities, and complain rates of subjective symptoms according to the Dichloromethane(DCM) exposure in optical lens manufacturing workers. The DCM exposed workers were divided into 3 groups that were consisted of the washing, setting and seperating group, and analyzed the DCM levels, hematological values(WBC, RBC, Hb, Hct), enzyme activities (s-GOT, s-GPT, TG and TC), and surveyed the subjective symptoms from 42 DCM exposed workers who worked in Taejon city and Chungnam provincial areas from Feb.1 to 18, 1996. The results were as follows: The mean values of DCM were significantly different from working process, that was 19.62±6.29ppm in washing, 25.08±8.27ppm in setting, 43.46±18.65ppm in seperating process. And the DCM exposed levels showed a tendency to increase when job tenure was longer and ventilation was worse. The values of WBC, RBC, s-GOT and TG were significantly increased according to the increase of DCM exposed levels. The complain rates of subjective symptoms of DCM exposed workers were high rates such as "heaviness", "sleepiness","nausea and vomiting". "decrease eye-sight", "hand tremor" and "dyspnea", respectively. The correlation between DCM exposed levels, and WBC, RBC and s-GOT were significantly different, respectively.

기-액병류상향 충전탑에서 액체체류량과 축방향혼합특성

조지훈,손민일,박용성,함병호,김태옥 明知大學校 産業技術硏究所 1993 産業技術硏究所論文集 Vol.12 No.-

For upward cocurrent gas-liquid flow in a packed column, holdup and axial mixing characteristics of liquid were investigated. In an air-water-glass bead system. liquid holdup and residence time distribution(RTD) were measured and Peclet number based on axial dispersion model was evaluated from experimental RTD. We found that liquid holdup was increased with increasing liquid velocity and size of packing material, and it was decreased with increasing gas velocity. Also, liquid holdup for the cocurrent up flow system was larger than that for the downflow system at the same experimental conditions. As increasing gas velocity, the in fluence of packing size and operation method on liquid holdup was reduced. The calculated Peclet number was not affected by gas velocity, and it was increased with increasing liquid velocity and with decreasing packing size. Furthermore, the effect of liquid velocity on Petlet number for higher liquid Reynolds number(Re1>70) was larger than that for lower Re1. In these conditions, correlations of the dynamic liquid holdup and the Bodenstein number were obtained.

설포메틸화법에 의한 無公害 傳統韓紙의 제조에 관한 연구

趙南奭,閔斗植,崔泰鎬,李載源 충북대학교 농업과학기술연구소 1993 農業科學硏究 Vol.10 No.2

This study was performed to investigate the pollution-free papermaking characteristics from paper mulberry by sulfomethylation pulping. Bast fibers were pulped by sulfomethylated cooking liquor and by alkali and alkali-peroxied processes for the comparison. Sulfomethylated pulping resulted in the superior pulp with high yield and better quality compared to those of alkali and alkali- peroxide pulps. Since the pulp was so bright, there was almost no need additional bleaching. Polluttant loads of sulfomethylated pulping effluent were very low in terms of pH, turbidity and color compared to those of alkali. Pollution-free effluents was accomplished by simple filtering treatment with pine bark, charred rice hull and sawdust compost. Pine bark was the most effective in reduction rate of pollutants. Key words : Korean traditional paper, Paper mulberry, Alkali-Peroxide, Sulfomethylated pulping, Effluent.

스마트폰 부재와 분실을 대비한 어플리케이션

조시현;문상수;김기환;도민균;서재현;김태공 인제대학교 2012 仁濟論叢 Vol.27 No.1

Recently, as the Smart Phone is rapidly disseminated worldwide, it is emerging as an important digital communication media changing the communication types of users. We use the Smart Phone in all aspect of daily life besides communication. The Smart Phone is indispensible tool that has a great ripple effect on our daily life. Therefore, if the Smart Phone users lose or do not bring their phones, they were troubled. In this paper, we make users available to use the Smart Phone, even if they lose or do not bring their phones. To do this end, we develop features that search the phone in case of not knowing where it is, that contact another phone in case of not bringing their phone, that lock the phone in case of losing it. We expect these features promote a expansion and a vitality of the Smart Phone market.

Styrene과 Allyl methacrylate와의 共重合에 關한 硏究

趙元濟,文正大,閔泰益 부산대학교 1972 論文集 Vol.14 No.2

The copolymerization of allyl compound, beginning with copolymerization of allyl acetate with vinyl acetate and so on, have already been reported by some researchers. There are not so many quantitative researches on copolymerization of allyl methacrylate with various monomer. Allyl methacrylate have two unsaturated double bond having polymerizability in molecule so that it is expected that its copolymer with vinyl compounds will be various properties and uses. In this paper, the copolymerization of styrene with allyl methacrylate were carried out in the presence of AIBN as initiator at 60℃ studied in its copolymerization conversion percent, intrinsic viscosity, softening point, monomer reactivity ratio, and also discussed I. R. spectrum of stryrene of stryrene allyl methacrylate copolymer.

무흡광색소 생물의 감광수용체 개발에 관한 연구(Ⅰ) : 표고버섯 중의 광감응성 mitochondrial ATPase Light-Induced Mitochondrial ATPase in the L. edodes (Berk) Sing

민태진,조석우,박상신 동국대학교 자연과학연구소 1987 자연과학연구 논문집 Vol.7 No.-

표고버섯의 미토콘드리아는 설탕 농도 44~50% 사이에서 분리 정제 되었다. 파장 변화에 따른 미토콘드리아성 ATPase의 비활성도는 680nm 파징에서 가장 증가하였다. 680nm에서 빛 조사 시간 변화에 따른 활성도는 5분 동안 조사 하였을 때 가장 증가 하였다. 최적 광조건(680nm 5분)에서 조사한 이 효소의 최적 pH 및 최적 온도는 7.5와 59℃였다. 최적 광조건에서 얻은 이 효소는 Fe³, Fe², Mg², K 및 Ca²이온에 의하여 활성화 되었고, Na이온에 의하여 억제 되었다. Mitochondria in the L. edades was purified by linear sucrose density gradient centrifugation. The mitochondrial ATPase activity was investigated by various wavelength illumination for 30 min at dark state. The mitochondrial ATPase activity was stimulated 1.6 fold by 680nm illumination compared with dark control group. The mitochondrial ATPase activity of different light illumination time at 680nm was stimulated 2.3 fold at 5minuted compared with dark control group. Its optimum pH and temperature were found to be 7.5 and 59℃ after illumination for 5 minutes at 680nm. The mitochondrial ATPaee activity was activated by 5 mmol Fe³, 0.1mmol Mg², 0.5mmol K, and 0.1mmol Ca²ion. But the enzyme was ingibited by 5mmol Na ion.

전자의무기록의 충실성 검토를 통한 미비기록 개선 활동

조윤정,김경숙,이향숙,이진영,김태민,김민순 한국의료QA학회 2008 한국의료질향상학회지 Vol.14 No.1

문제: 전자의무기록(EMR) 시행 후 의무기록 정리율의 저하와 질적인 측면에서의 충실성과 정확성에 대한 문제점이제기되었다. 목적: 전자의무기록의 정리율과 충실성 검토를 통하여 문제점을 파악하고개선점 찾아 의무기록 정리율을 향상시키고 충실성을 높이고자 하였다. 의료기관: 서울시에 소재한대학병원 의무기록과 질 향상 활동: 전자의무기록의 문제점을 개선히키 위하여 사용자 편의를 위한 EMR프로그램 수정 및 보완, 진단·수술 관련 작업, 업무개선, 교육, 홍보 등의 활동을실시하였다. 개선효과: 의무기록 정리율, 전자인증미비, 경과기록 기재일수, 퇴원요약주진단적합률, 기록지별 필수항목기 재율, 충실성에서 향상이 이루어졌다.

대전·충남지역경제의 특성과 발전과제

민태형,조복현 大田産業大學校 2001 한밭대학교 논문집 Vol.18 No.-

The economy of Daejon-Chungnam region is expected to grow and develop rapidly, due to the active enterprise start-up concentrated in Daeduck Science Complex at Daejon and the establishment of heavy-chemical industrial park along the west-sea belt in Chungnam. Based on them, Daejon and Chungnam region governments have planned the long-term economic development strategies each other. Daejon government has made the plan to foster the hi-tech industry, the knowledge-information industry and the circulation center of commodity. Chungnam set up the plan to bring up the four comparative advantage industries and the five knowledge-based industries. We will assess these plans of both region governments based on the specific characters of both region economies. We suggest that both governments should make the plan to cooperate and complement, not to compete and overlap each other. And both governments should plan the strategies that can booster not only hi-tech industry, but also existing low-tech industry so that maintain high employment and equivalent development.