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국소 전기자극이 백서의 임의형 피부판 생존에 미치는 영향
유병표,김영우,허우회,박병림 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.1
Many experimental studies have demonstrated beneficial effect of electrical field application to various hard and soft tissues. The present study was undertaken to determine if application if application of exogenous electric fields could improve survival rate of random pattern skin flap in rats. 32 Spraque-Dawley rats were divided into 4 groups and caudally based random pattern flaps of 2x8cm in size were elevated in all experimental animals. Silver electrodes were implanted into the fascia to apply the electrical stimulation(-5V, 0.2ms, 20hz) to the skin flap. Electrical stimulation was applied 3 times for 1 hour daily and it was continued to the 5th day. It is concluded that exogenous electrical stimulation shows a possibility of the enhancement of flap survival rates by increasing the rates to 3.2%(P<0.01).
포도종실 추출물이 Methylcellulose 필름 성질에 미치는 영향
유승모,박준서,정하열,심재용,김병호,박장우 한국산업식품공학회 2003 산업 식품공학 Vol.7 No.4
The film with methylcellulose(MC) and grape seed extract(GSE) were prepared by casting their aqueous solution at 80℃ and drying at 23℃ for 48 hrs. Effect of grape seed extract(GSE) on the barrier permeabilities and the thermomechanical property of methylcellulose(MC) film was studied. The barrier permeabilities and the thermomechanical property of MC film containing various contents of GSE were evaluated in terms of water vapor, oxygen permeabilities, and dynamic mechanical analysis(DMA). The rate of water vapor permeability of MC film decreased with GSE contnets in the MC films. Also, the rate of oxygen permeability also decreased with GSE contents indicating higher oxygen barrier property of MC film. The results showed that GSE had a good miscibility with MC and acted as a plasticizer for MC film resuling in lowering the glass transition temperature of the film.
정병호,조원제,천승훈,박면지,유진철,천문우 朝鮮大學校 1998 藥學硏究誌 Vol.19 No.2
For the development of antifungal agents. modification of naftifine which exhibits significant antimycotic activity was performed by replacing the naphthalene ring of it to hetero cyclic rings such as morpholine. benzothiazole. piperidine and pyridine derivatives. The synthesized compounds were tested in vitro antifungal activity against five different fungi with naftifine as a comparative antimycotic molecule. From the biological evaluation two compounds. (E)-N-(3-phenyl-2-propenyl)-N-(4-piperidinylmethyl)amine(3d) and (E)-N-(3-phenyl-2-propenyl)-N-(3-pyndylmethyl)amine(3D) showed relatively noticeable activity(MIC=50㎍/㎖). On the other hand. the other compounds had no activity.
좌골신경손상 흰쥐의 가자미근과 내측비복근 위축에 대한 전기자극 효과
박병림,허우회,유병표,김영우,김대영 대한성형외과학회 1992 Archives of Plastic Surgery Vol.19 No.3
This experimental study includes the effect of intermittent electrical stimulation of the muscle on the atrophic response of peripherally denervated muscles. Rats(Sprague -Dawley, 240-260gm) were subjected to a severance of the sciatic nerve and mechanical properties of contraction including contraction time, half relaxation time and maximum twitch tension, maximum tetanic tension and fatigue index were observed on the slow(soleus m.) and fast(medial gastrocnemius m.) muscles 10days after serverance of the sciatic nerve. Experimental groups were divided into three groups : control group(CONT) immediately after severance of sciatic nerve, denervation group(DN) 10days after severance of sciatic nerve, and denervation plus eletrical stimulation group : (DN-ES) denervation combined with intermittent eletrical stimulation of muscles directly. Optimal frequency of electrical stimulation was 20㎐ for soleus muscle and 40㎐ for medial gastrocnemius muscle under 0.5ms of pulse width and supramaximal intensity. In DN group, muscle weight and mechanincal properties of contraction were significantly decreased compared with the control group. In DN-ES group, however, muscle weight and mechanincal properties were significantly increased compared with the denervation group. These data indicate that intermittent electrical stimulation of muscles may be useful in decreasing the muscle atrophy in peripherally denervated muscles.
김병수,유재민,이재천,남철우,윤정모 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.4
"he removal of lead from electric arc furnace (EAF) dust is important in the process for recovering zinc by a reduction-volatilization method. In this study, experiments on kinetics of the volatilization reaction of lead by chlorine components as NaCl and KCl contained in the EAF dust were carried out in the temperature range of 973 to 1223 K under an air atmosphere using a weight-loss technique. As a result, the volatilization ratio of lead was about 99.0% at the temperature of 1223 K and the reaction time of 180 min. Jander equation was found to fit well the volatilization reaction rate over the entire temperature range. The volatilization reaction of lead is rate controlled by solid-solid diffusion. An activation energy of 175 kJ/mol(41.8 kcal/mol) was obtained. (Received January 8, 2004)
Ga_(0.6)Sb_(1.4)Se₃單結晶의 光傳導度 特性
宋燦日,劉炳守,李愚宣,金南伍,金亨坤 조선대학교 에너지.자원신기술연구소 2002 에너지·자원신기술연구소 논문지 Vol.24 No.2
Ga_(0.6)Sb_(l.4)Se₃single crystals were grown by the Bridgman technique method, These single crystals had orthorhombic structure, and lattice constant and electric conduction type of Ga_(0.6)Sb_(l.4)Se₃single crystals was a = 11.860Å , b = 12.057Å, c = 4.103Å and p-type, respectively. Direct band gap of Ga_(0.6)Sb_(l.4)Se₃single crystals obtained from optical absorption spectrum were 1.17 eV. Photoconductivity spectrum measured at 10K showed that the photoconductivity peak in Ga_(0.6)Sb_(l.4)Se₃single crystals was located in 960 nm.
全承勳,劉丙烈,朴相龍,金根友 한국체육대학교 부속 체육연구소 1986 체육연구소논문집 Vol.4 No.-
The purpose of this study is to investigate the need traits of KNCPE (Korean national College of Physical Education) students and to find out the number of students to be required special guidance on counceling services. The instrument used investigation was the SNDT (Standardization Need Diagnostic Test) and this include descriptive and validity scales. The results are as follows: 1. Generally, the need of the KNCPE students belong to norm group. 2. The number of students who have abnormal scores in almost every scales are 9 (2.0%; male-5, female-4). 3. The students has above mentioned problem should join in the special guidance on counceling services.
안태규,최병렬,송기철,이용연,유화승,서상훈,최우진,조정효,이연월,손창규,조종관 대전대학교 한방병원 2001 惠和醫學 Vol.10 No.1
In the literatual study on Holotrichia, the results were obtained as follows ; 1. Holotrichia is larva of Holotrichia diomphalia Bates etc. powder or liquor of Holotrichia is used medically. 2. Appearance of Holotrichia is shape of kidney, yellowish color. 3. The oriental characters of Holotrichia is warm, toxicant, salty. 4. The significant efficancy of Holotrichia is breaking the stagnant blood. 5. Holotrichia can be applied to the diseases related to thrombosis, and recover the demage of liver. 6. Holotrichia avails Liver diseases such as Hepatitis, Liver cirrhosis, Hepatosplenomegaly, Hepatoma etc.