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Hydrogen Peroxide에 의해 유도된 남성생식세포의 세포독성에 미치는 소양(銷陽)의 효과
오명숙,김도림,양웅모,장문석,박수연,강순아,박성규,Oh Myung-Sook,Kim Do-Rim,Yang Woong-Mo,Chang Mun-Seog,Park Soo-Yeon,Kang Soon-Ah,Park Seong-Kyu 대한한의학방제학회 2004 大韓韓醫學方劑學會誌 Vol.12 No.2
The purpose of this study is to examine the protective effect of Cynomorii herba on $H_2O_2$-induced cytotoxicity in male germ cells. The effects were studied by a modified MTT assay. Hydrogen peroxide significantly induced cytotoxicity in GC-1 spg cells, and co-treatment or pre-treatment of Cynomorii herba extract has reduced the cytotoxicity in a dose dependant manner. These results suggest that Cynomorii herba extract increases the survival rate of GC-1 spg cells through the antioxidant effect against $H_2O_2$-induced cytotoxicity.
오명숙,이종호,김대환,문정현,임정혁,이도현,김형준,Oh, Myeong-Sook,Lee, Jong-Ho,Kim, Dae-Hwan,Moon, Jeong-Hyun,Yim, Jeong-Hyuk,Lee, Do-Hyun,Kim, Hyeong-Joon 한국재료학회 2009 한국재료학회지 Vol.19 No.1
Silicon carbide (SiC) is a promising material for power device applications due to its wide band gap (3.26 eV for 4H-SiC), high critical electric field and excellent thermal conductivity. The Schottky barrier diode is the representative high-power device that is currently available commercially. A field plate edge-terminated 4H-SiC was fabricated using a lift-off process for opening the Schottky contacts. In this case, Ni/Ti dual-metal contacts were unintentionally formed at the edge of the Schottky contacts and resulted in the degradation of the electrical properties of the diodes. The breakdown voltage and Schottky barrier height (SBH, ${\Phi}_B$) was 107 V and 0.67 eV, respectively. To form homogeneous single-metal Ni/4H-SiC Schottky contacts, a deposition and etching method was employed, and the electrical properties of the diodes were improved. The modified SBDs showed enhanced electrical properties, as witnessed by a breakdown voltage of 635 V, a Schottky barrier height of ${\Phi}_B$=1.48 eV, an ideality factor of n=1.04 (close to one), a forward voltage drop of $V_F$=1.6 V, a specific on resistance of $R_{on}=2.1m{\Omega}-cm^2$ and a power loss of $P_L=79.6Wcm^{-2}$.
DPPH 방법을 통한 토사자, 보골지(補骨脂), 사상자(蛇床子), 음양곽(淫羊藿)의 항산화 활성에 대한 연구
오명숙,김도림,강지웅,김산웅,유태원,박정열,김동민,박완수,장문석,박수연,박성규,Oh, Myung-Sook,Kim, Do-Rim,Kang, Ji-Ung,Kim, San-Woong,Yu, Tae-Weon,Park, Jung-Yeul,Kim, Dong-Min,Park, Wan-Su,Chang, Mun-Seog,Park, Soo-Yeon,Park, Seong-Ky 대한한의학방제학회 2005 大韓韓醫學方劑學會誌 Vol.13 No.2
The present study was conducted to compare antioxidant activity of Cuscutae Semen, Psoraleae Fructus, Cnidii Fructus and Epimedii Herba by DPPH radical scavenging activity. The extract was studied using diphenyl-picryl-hydrazyl (DPPH) for DPPH method. DPPH radical scavenging activity was measured after. .10, 20 and 30 minutes. The extract was tested by 1, 5, 10, 50, 100, 500 and $1000{\mu}g/ml$ concentrations. The results showed that the extract scavenged DPPH radical with time-dependent manner. Also, the extract showed dose-dependent DPPH radical scavenging activity. The extract of Cuscutae Semen, Psoraleae Fructus, Cnidii Fructus and Epimedii Herba scavenged DPPH radical with the IC50 being 2.7, 3.2, 2.9 and 1.1 mg/ml, respectively. In conclusion, the extract of Epimedii Herba, Cuscutae Semen, Cnidii Fructus and Psoraleae Fructus have antioxidant activity for the treatment of male sterility.
동결 건조법을 이용한 옥천산 캡슐 제형 개발에 관한 연구
오명숙,김도림,강지웅,장문석,박선민,고병섭,박성규,Oh, Myung-Sook,Kim, Do-Rim,Kang, Ji-Ung,Chang, Mun-Seog,Park, Sun-Min,Ko, Byoung-Seob,Park, Seong-Kyu 대한한의학방제학회 2005 大韓韓醫學方劑學會誌 Vol.13 No.1
Objective : Okchun-San(OCS) is known as an effective herbal medicine on Type 2 diabetes. We performed to change OCS formulation for freeze drying capsulation. Methods The mixtures of OCS were extracted with water. finally, the filtered solution were evaporated and lyophilized to dry granules. The various ratio of excipients were studied to determine the formation for capsulizing. The samples were inspected for any difference in color, taste and appearance. Results: The prepared form of OCS were dried and weighted 260kg. The lyophilized dry powder yielding 40kg. The suitable ratio of OCS-dry powder and excipient was 10:1. The average weights of On and placebo capsules were $440{\pm}5.28mg$, $465{\pm}7.95mg$, respectively. There was no notable change in color and appearance for both capsuled samples throughout the study period. Conclusions: Therefore in can be concluded that freeze drying capsulation is appropriate form of OCS.
가스화 조건에서 슬래그 성분이 크롬계 내화재 미세구조 변화에 미치는 영향
오명숙(Oh, Myong-Sook),김한봄(Kim, Han-Bom),박우성(Park, Woo-Sung) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.11
The inside wall of a coal gasifier is lined with refractory, and the corrosion of the refractory by coal sag is an important parameter affecting the refractory lifetime and the replacement period. This paper examines the changes in microstructure of a chromia refractory due to chemical reactions with penetrating slag as a function of slag composition. The effects of CaO and Fe₂O₃ concentrations were studied using Datong and KIDECO slag. Static corrosion experiments were carried out, the percent slag penetration and changes in the microstructure were determined by SEM/EDX analyses. FactSage equilibrium calculations were carried out to determine the equilibrium products and the predictions were compared with experimental observations.
현지초(玄之草)의 진통(鎭痛) 및 항염증(抗炎症) 효과
오명숙 ( Myung Sook Oh ),주미선 ( Mi Sun Ju ),정현욱 ( Hyun Uk Jeong ),김효근 ( Hyo Geun Kim ),박건혁 ( Gun Hyuk Park ),윤유석 ( You Suk Youn ),김영옥 ( Young Ock Kim ),김선여 ( Sun Yeou Kim ) 대한본초학회 2010 大韓本草學會誌 Vol.25 No.3
Objectives: The present study investigated the anti-nociceptive and anti-inflammatory properties of the water extract of Geranii Herba (The stem and leaves of Geranium thunbergii Sieb. et Zucc.) in the animal models of pain and inflammation. Methods: We evaluated the anti-nociceptive and anti-inflammatory activities of Geranii Herba extract (GHE) using the writhing test, tail-flick test, carrageenan-induced paw edema and xylene-induced ear edema models. Two dose of GHE (100 and 1000mg/kg) was administrated orally to the mice. Control group received normal saline and ibuprofen (50mg/kg) was used as a positive control drug. Results: GHE 1000mg/kg treated group showed an increased tail-flick response time in the tail-flick test and inhibitory effect on writhing syndrome induced by acetic acid. Treatment with GHE at the same dose inhibited ear edema induced by xylene and foot edema induced by carrageenan toxicity. Conclusion: The results demonstrate that GHE has anti-nociceptive and anti-inflammatory effects in the various models of nociception and inflammation.