생약재를 이용한 고지혈증 치료의 연구 동향 고찰

최성환,손창규,김진미,설인찬,Choi, Seong-Hwan,Son, Chang-Gue,Kim, Jin-Mi,Seol, In-Chan 대한한방내과학회 2010 大韓韓方內科學會誌 Vol.31 No.3

Objective : To summarize and make a reference number of antihyperlipidemic herbal plants worldwide. Method : We surveyed all papers of antihyperlipidemic studies using herbal plants in Pubmed database as "hyperlipidemia AND herb", "hyperlipidemia AND herbal", etc. of Default Tag "Title". The number of papers, the formation of experiments, frequency of herbal plants studies, and main studies were analyzed. Result : Total 178 studies were finally selected. The number of papers were rapidly was increased since 1998. RCT studies were most papers(39.9%). Most studies were about plant sterol or plant stanol studies(78%). 10 papers studied about Herbal plants. Crataegus pinnatifida Bunge, Salvia miltiorrhiza Bunge, Alisma orientale(Sam.) Juz. and so forth were relatively studied much. Conclusion : This study produced an overview of worldwide antihyperlipidemic plants. This result may provide a valuable information for development of Korean herbal medicine against hyperlipidemia in the future.

러시아-우크라이나 전쟁(러시아의 우크라이나 침공)의 우주전 분석 및 양상 그리고 우주기술 개발시 고려사항

최성환,Choi, Seonghwan 한국우주과학회 2022 우주기술과 응용 Vol.2 No.2

In this article, Russia's space threat assessment and space warfare in the Russia-Ukraine war (Russian invasion of Ukraine) were analyzed and summarized. Considering the probability that commercial satellites will also be potential targets of space warfare, it is suggested that not only military satellites but also commercial satellites develop and apply space technology that can be applied equally to space threats when developing space technology. Necessary space technologies is listed.

Ni계 다공체 금속의 고온 산화 거동

최성환,윤중열,이혜문,공영민,김병기,이기안,Choi, Sung-Hwan,Yun, Jung-Yeul,Lee, Hye-Mun,Kong, Young-Min,Kim, Byoung-Kee,Lee, Kee-Ahn 한국분말야금학회 2011 한국분말재료학회지 (KPMI) Vol.18 No.2

This study investigated the high temperature oxidation behavior of Ni-22.4%Fe-22%Cr-6%Al (wt.%) porous metal. Two types of open porous metals with different pore sizes of 30 PPI and 40 PPI (pore per inch) were used. A 24-hour TGA test was conducted at three different temperatures of $900^{\circ}C$, $1000^{\circ}C$ and $1100^{\circ}C$. The results of the BET analysis revealed that the specific surface area increased as the pore size decreased from 30 PPI to 40 PPI. The oxidation resistance of porous metal decreased with decreasing pore size. As the temperature increased, the oxidation weight gain of the porous metal also increased. Porous metals mainly created oxides such as $Al_2O_3$, $Cr_2O_3$, $NiAl_2O_4$, and $NiCr_2O_4$. In the 40 PPI porous metal with small pore size and larger specific surface area, the depletion of stabilizing elements such as Al and Cr occurred more quickly during oxidation compared to the 30 PPI porous metal. Ni-Fe-Cr-Al porous metal's high-temperature oxidation micro-mechanism was also discussed.

우주 쓰레기 제거기술을 활용한 우주무기 개발 개연성 고찰 및 우주기동전(Space Maneuver Warfare)의 이해

최성환,Seonghwan Choi 한국우주과학회 2023 우주기술과 응용 Vol.3 No.2

According to the studies recently published through advanced maui optical and space surveillance technologies (AMOS) Conference 2021, LEO conjunction assessment revolves around not on operating satellites but space debris such as rocket bodies and non-operational satellites, hence suggesting a solution through space traffic management. Against this backdrop, the issue of active debris removal (ADR) has emerged to the surface as an international challenge throughout the globe. In step with this, the United Nations General Assembly approved a resolution calling on nations to halt tests of direct-ascent anti-satellites, to which U.S. and twelve other nations included Republic of Korea were original signatories. ADR techniques are also actively being researched in the civil sector, and these commercial services, if successfully developed, could possibly be utilized for military use as well. As such, this paper will help readers' understanding for the current status of ADR techniques, space threat assessments, on-orbit rendezvous and proximity operations by looking at previous cases, reflecting on space-faring nations' ADR techniques and its development probability in relation to space weapons. As a conclusion, this study will propose the needs of developing space propulsion system by understanding Space Maneuver Warfare in preparation for the future space battlefield.

양성자 조사법에 의한 PT-IGBT의 Turn-off 스위칭 특성 개선

최성환,이용현,권영규,배영호,Choi, Sung-Hwan,Lee, Yong-Hyun,Kwon, Young-Kyu,Bae, Young-Ho 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.12

Proton irradiation technology was used for improvement of switching characteristics of the PT-IGBT. Proton irradiation was carried out at 5.56 MeV energy with $1{\times}10^{12}/cm^2$ doze from the back side of the wafer. The I-V, breakdown voltage, and turn-off delay time of the device were analyzed and compared with those of un-irradiated device and e-beam irradiated device which was conventional method for minority carrier lifetime reduction. For proton irradiated device, the breakdown voltage and the on-state voltage were 733 V and 1.85 V which were originally 749 V and 1.25 V, respectively. The turn-off time has been reduced to 170 ns, which was originally $6{\mu}s$ for the un-irradiated device. The proton irradiated device was superior to e-beam irradiated device for the breakdown voltage and the on-state voltage which were 698 V and 1.95 V, respectively, nevertheless turn-off time of proton irradiated device was reduced to about 60 % compared to that of the e-beam irradiated device.

청간플러스(가미청간탕(加味淸肝湯))로 호전된 뇌경색을 동반한 C형간염 환자 1례 및 알코올성 간염 환자 1례

최성환,장문원,박소애,임승민,안정조,조현경,유호룡,설인찬,김윤식,Choi, Seong-Hwan,Chang, Mun-Won,Park, So-Ae,Lim, Seong-Min,An, Joung-Jo,Jo, Hyun-Kyung,Yoo, Ho-Rhyong,Seol, In-Chan,Kim, Yoon-Sik 대한한의학방제학회 2008 大韓韓醫學方劑學會誌 Vol.16 No.2

This study is a clinical report for hepatitic C patient and alcoholic hepatitis patient who were improved by treatment of a herbal viscous extracts(Chunggan plus). We checked up Aspartate-aminotransferase(AST), Alamine-aminotransferase(ALT) and ${\gamma}$-Glutamyl transpeptidase (${\gamma}$-GTP) and compared the level of AST, ALT, ${\gamma}$-GTP after treatment. After medication the level of AST, ALT, ${\gamma}$-GTP was significantly normalized. So we suggested that herbal viscous extracts(Chunggan plus) has effects on hepatitis.

대요근에 대한 근에너지기법을 이용한 자세이완기법 적용: 사례연구

최성환,홍현표,Choi, Sung-hwan,Hong, Hyun-pyo 대한정형도수물리치료학회 2017 대한정형도수물리치료학회지 Vol.23 No.1

Background: Positional release muscle energy technique (PRMET) is a method joined positional release technique and muscle energy technique. Methods: Subjects those who have low back pain from the acute to chronic phase, were applied PRMET method on psoas major muscle and measured the changes in pain and disfunction. Results: PRMET method is effective for reducing pain and disfunction on psoas major muscle. Conclusions: The advantages of PRMET method are minimized patient inconvenience, shortening of treatment time and effective for improvement. In the future research, methods need to be improved so that this can be applied to other muscles.

흉비(胸?), 부면(不眠), 변비(便秘)를 동반한 뇌경색 환자의 대황황련사심탕(大黃黃蓮瀉心湯) 치험례

최성환,김진미,장문원,문승희,조현경,설인찬,Choi, Seong-Hwan,Kim, Jin-Mi,Chang, Mun-Won,Mun, Seung-Hee,Jo, Hyun-Kyung,Seol, In-Chan 대한한의정보학회 2009 大韓韓醫情報學會誌 Vol.15 No.2

Objective: The aim of this study is to show one case of cerebral infarction patient with chest discomfort, insomnia and constipation improved by Daehwanghwangryeonsasim-tang. Methods: The patient was treated with herbal medicine (Daehwanghwangryeonsasim-tang) and acupuncture. Changes in symptoms for treatment period were observed. Result: Intensity and frequency of chest discomfort was decreased. Sleep time was increased and constipation was improved. Conclusion: Daehwanghwangryeonsasim-tang is effective on symptoms of the pattern of heart heat and fire-heat.

돼지 대동맥동에 대한 해부학적 연구

최성환,정기수,김인식,태현진,박영재,심정하,안동춘,Choi, Seong-Hwan,Cheong, Ki-Soo,Kim, In-Shik,Tae, Hyun-Jin,Park, Young-Jae,Sim, Jeoung-Ha,Ahn, Dong-Choon 대한수의학회 2006 大韓獸醫學會誌 Vol.46 No.1

This study was aimed to obtain the anatomical information on the location of ostia of left and right coronary artery in 3 weeks old and 6 months old hybrid swine. The each intercommissural distance of 6 months group was twice than 3 weeks old group. The largest sinus was right aortic sinus followed by left and posterior sinus. All left coronary artery ostia in left aortic sinus were located near the right aortic sinus as well as lower than the ostia of right one. Most of the right coronary artery ostia were located at the level of supravalvular ridge of right aortic sinus. In addition the right ostia had more variation than left ones. Comparing to the sites of 3 weeks old pigs, the sites of the right ostia in 6 months group were more variable. These data suggest that the locations of coronary ostia were different with the sites of human's, and changes of the location may be occurred during the growth.

다문화주의와 인권의 문제

최성환(Choi Sung-Hwan) 중앙대학교 중앙철학연구소 2011 철학탐구 Vol.30 No.-

이 글은 인권 문제를 다문화사회의 구체적 사례에서 접근하는 것이 아니라 문제를 이해하고 해결책을 제시하기 위한 관점 확보를 목표로 하는 ‘발견술적 시도’(a heuristic attempt)를 담고 있다. 따라서 문화상대주의와 보편주의사이에서 표류하고 있는 ‘문제로서 인권’이 중심적인 주제이다. 이론적 논의는 때로 진부해보일 수 있지만 인권 신장의 방향을 제시할 수 있다는 점에서 중요하다. 우리의 짧은 다문화사회의 역사 속에서 인권의 문제는 단순히 법적·제도적 문제일 뿐만 아니라 또한 의식의 문제이기도 하다. 이것은 인권과 연관된 다문화교육의 중요성을 말해주며, 이 교육의 목표가 바로 인권에 대한 정확한 이해와 실천이라 할 수 있다. 이 글은 먼저 보편주의와 문화상대주의의 대립 속에서 인권 문제를 조명함으로써, ‘인권의 원천’에 대한 올바른 이해를 도모하고자 한다. 그 다음 ‘문화상대주의의 관점에서의 인권’을 월리엄 J. 탤벗의 시각에 따라 집중적으로 고찰하고자 한다. 그는 문화상대주의의 입장에서도 삶의 경험과 타자들과의 교감, 즉 ‘감정이입적 이해력’을 통해 보편적인 도덕적 판단에 도달할 수 있다고 전망한다. 물론 이 판단이 추후적으로 수정될 가능성은 전제되어진다. 탤벗은 ‘삶속에서의 실험’(experiments in living)이라는 슬로건을 통해 이론적이며 인위적인 ‘보편적 기준’이 아니라, 주어진 여건과 상황에 부합하는 공존과 관용의 가능성을 끊임없이 모색하는 것이 실천적 차원에서의 인권 문제의 해결에 기여할 수 있다고 역설한다. 이 러한 관점은 우리나라의 인권문제, 특히 다문화사회와 연관된 현상에 접근하는 좋은 이론적 본보기가 되리라 기대한다. This paper does not approach to the specific examples of concrete problems of multi-cultural society (ex. human rights of international marriage migrant women or guest workers) but it is a heuristic attempt that aims to secure a perspective to understand those problems and to offer a solution. Therefore, "human rights as problematic" that drifts between cultural relativism and universalism is the central topic. This kind of theoretical approach may seem hackneyed when considering the sharp problematic situation that surrounds human rights; however, it is important in that it can adduce a direction for the increase of human rights within a concrete domain in the future. We can know that even in the short history of multi-cultural society, the issue of human rights is not only legal and institutional problem but also an ethical problem. This shows the importance of multi-cultural education associated with human rights, and that the purposes of this education are the accurate understanding and practice of human rights. First of all, considering the conflict between universalism and cultural relativism, this paper aims for the proper understanding of the origin of human rights by tracking the history of human rights. Then this paper intensively considers "human rights from the perspective of cultural relativism from the view point of William J. Talbott. He prospects that we can reach universal and ethical judgement through our life experiences and internal communion (emphatic understanding) with other people even from the position of cultural relativism. Of course, he is open to the possibility of this judgement being edited. He insists that it is not the theoretical and artificial "universal standard" but constantly seeking the possibility of coexistence and tolerance that accord with the given conditions and situation is what contributes to the solution of human rights in practical dimension through the slogan of "experiments in living." He emphasizes that this course of seeking represents the advance of humanity. Lastly, looking at the impact of this kind of discussion on our multi-cultural society will conclude this paper.