Effect of Long -term Treatment with the Adventious Root Cultured Mountain Ginseng (CBN-3) on Functions of Central Nervous System in Healthy Human Volunteers

LEE SE0UL,YU KEE WON,KEUM KYUNG SOO,KIM NARI,PAEK KEE-YEUP,JUNG KYUY0NG,CHOI BONG KYU,OH GYUNG JAE4 대한약학회 2006 大韓藥學會 總會 및 學術大會 Vol.2006 No.1

Electrical, Thermal, and Thermoelectric Transport Properties of Se-doped Polycrystalline Re2Te5

Se Woong Lee,Okmin Park,Hyun-Sik Kim,Won-Seon Seo,Sang-il Kim 대한금속·재료학회 2022 대한금속·재료학회지 Vol.60 No.12

Re2Te5 is considered a potential thermoelectric material because of its intrinsically low thermalconductivity, due to its complex crystal structure. Herein, a series of Se-doped Re2Te5 (Re2Te5-xSex, x = 0, 0.2,1, and 2) samples were synthesized, and their electrical and thermal transport properties were investigated. Pure orthorhombic Re2Te5 phases were successfully synthesized without any impurities for all compositions,and the continuous decrease in the calculated lattice parameters confirmed the substitution of Se atoms atthe Te sites. A maximum power factor of 0.135 mW/mK2was achieved for the sample with x = 0.2 at 880 K,mainly due to the increase in carrier concentration and electrical conductivity. The lattice thermalconductivity significantly decreased for all doped samples, which was attributed to the point defect phononscattering caused by Se doping. The thermoelectric figure of merit, zT reached a maximum value of 0.20 at880 K for Re2Te4.8Se0.2 (x = 0.2) sample, which was approximately 22% higher than that of the pristine Re2Te5sample. The weighted mobility, quality factor, and expected zT were calculated to evaluate the optimizationof the power factor and zT.

공급사슬에서 수량할인과 수익공유를 반영한 계약

박세호(Se Ho Park),이영해(Young Hae Lee),조동원(Dong Won Cho) 한국SCM학회 2012 한국SCM학회지 Vol.12 No.2

One of the most important reasons in pursuit of supply chain management is to prevent sub-optimization caused by decentralized decision making over the various entities. As supply chain coordination approach to overcome such a setting, contract mechanisms have frequently been used. However, a coordinated supply chain might fail to provide additional profit to one of the players. In result, it is necessary that a contract mechanism is designed to achieve the same profit in a centralized situation (coordination) and to improve the benefit of all the supply chain players (winwin). In this paper, we address supply chain contract based on revenue sharing and quantity discount considering price and service level. We show that the trade parameters among different entities in the supply chain contract can be chosen to achieve coordination and a win-win outcome.

아동보호전문기관 사회복지사의 윤리적 딜레마와 의사결정에 관한 연구

이세원(Lee Se-Won) 한국사회복지학회 2008 한국사회복지학 Vol.60 No.1

본 연구는 아동보호전문기관 사회복지사들의 윤리적 딜레마와 의사결정을 중심으로 연구를 진행하여 그들의 윤리적 고충을 이해하는 동시에 실천적이고 정책적인 제언을 하는 데에 목적이 있다. 본 연구의 수행을 위하여 질적연구방법론 중에서도 현상학적 연구방법을 사용하였고, 14명의 아동보호전문기관 사회복지사와의 인터뷰 내용을 Colaizzi(1978)의 분석단계에 따라 분석하였다. 총 8개의 주제묶음과 26개의 소주제들을 통해 아동보호전문기관 사회복지사는 ‘정책/제도의 미흡함과 업무의 과다 속에서 피학대 아동을 만나면서 직접적이고 간접적인 윤리적 딜레마에 빠짐’을 대주제로 도출하고, 총 4개의 주제묶음과 9개의 소주제들을 통해 ‘책임과 부담을 떠안은 채로 최선이라 생각하며 의사결정을 수행함’을 대주제로 도출할 수 있었다. 이에, 이와 관련된 향후 논의점들을 제시하였다. The aim of this study is to understand the ethical struggles of Child Protective Service(CPS) social workers and to indicate some implications for future studies by conducting research focusing on their ethical dilemmas and decision-making. This study used qualitative methods, in particular the phenomenological approach and 14 in-depth semi-structured interviews with CPS social workers, and were conducted and analyzed using the procedures of Colaizzi(1978). This study looks at the following research questions: 1) What kind of ethical dilemmas do CPS social workers encounter? This means what ethical dilemmas do they directly or indirectly encounter because of policy or system inadequacies and huge caseloads. 2) How do the CPS social workers make decisions when they are faced with ethical dilemmas? Making the best decisions with all of their responsibilities and burdens is the focus of this question. This study suggests the following discussions: First, efforts to emphasize 'ethics' at CPS are needed. Second, proper policies and systems based on the Korean situation are needed so that CPS social workers won’t have to face 'needless' ethical dilemmas. Third, an index of ethical problems or ethical codes is necessary because principles are important to those social workers who face ethical dilemmas. Fourth, an ethical committee that protects the CPS social workers by supporting their decisions and being responsible for them is needed. Last, a debriefing system that reduces a CPS social worker's psychological trauma caused by ethical dilemmas should be available.

P247 : A study on use of complementary and alternative medicine for acne

( Sook Kyung Lee ),( Taek Geun Lee ),( Hyun Hwang Bo ),( Tae Gwang Kwon ),( Se Won Jung ),( Young Seok Lee ) 대한피부과학회 2013 대한피부과학회 학술발표대회집 Vol.65 No.2

Background: Complementary and alternative medicine (CAM) is any practice that has healing effects, but is not based on evidence demonstrated by scientific method. Recently, CAM has been used in various diseases including acne. However, there have been no studies on CAM for acne in Korea. Objectives: The purpose of this study was to analyze the use of CAM in acne patients. Methods: A total of 159 patients with acne were enrolled on the study, and filled out a questionnaire about use of CAM. Results: Overall 87.4% (139/159) of the patients reported the previous or current use of at least one more type of CAM. Cosmetics for acne (100, 22.9%) was most frequently used, followed by diet therapy (81, 18.5%), spa and bath therapies (77, 17.6%), health food supplement (67, 15.3%), skin care shop (64, 14.6%), oriental medicine (38, 8.7%), and aromatherapy (9, 2.1%). The most common reason for using CAM was ``wish to try everything`` (28.6%), and the most common source of information was internet (40.5%). The therapeutic effect of CAM was best with diet therapy (32.1%). The most common side effect of CAM was aggravation of symptoms. The most common monthly cost for CAM was between 50,000 and 100,000 won/person. Conclusion: As our results, we can predict that the use of various types of CAM for acne will become more common. Therefore, dermatologists need to study about benefits and adverse effects of CAM for acne.

바이오매스 합성가스를 이용한 엔진 발전 시스템의 경제성 평가

문지홍(Ji Hong Moon),이정우(Jeung Woo Lee),방병열(Byung Ryeul Bang),김세원(Se Won Kim),이은도(Uen Do Lee) 한국열환경공학회 2010 한국열환경공학회 학술대회지 Vol.2010 No.추계

Biomass, a carbon neutral fuel, is one of the fastest growing renewable energy sources. In this study, economic feasibility of small scale power generation system using syngas from biomass has been investigated. Effects of important variables such as capital investment, cost of waste wood, renewable energy certificate(REC), system marginal price(SMP) on the benefit of business have been analyzed. Internal rate of return(IRR) was predicted as 16.90%, which implicates the business is promising based on the assumptions such as SMP of 137 Won/kWh, capital cost of 4.7 billion won, and waste wood price of 30 thousand won. Major factors affecting the benefit of business are as follows; system marginal price, operational rate, capital investment, expenditure of waste wood, certified emission reduction.

위화(胃火) 1호(號)로 호전(好轉)된 만성위염(慢性胃炎) 환자(患者) 치험(治驗) 2례(例)

이경민,이세연,임성철,서정철,한상원,Lee, Kyung-min,Lee, Se-yun,Im, Sung-chul,Seo, Jung-chul,Han, Sang-won 대한침구의학회 2003 대한침구의학회지 Vol.20 No.6

Objective: This study was designed to investigate the effect of Wihwa herbal-acupuncture on chronic gastritis. Methods: Wihwa herbal-acupuncture was administered two times a week. The following points were selected: CV12(中脘), CV13(上脘), S36(足三里), Liv3(太衝). We checked pain rating score(P.R.S.), visual analogue scale (V.A.S.) and Gastroscopy. Results: After 6 weeks of treatment, the patient showed that clinical symtoms was disappeared, Lee's P.R.S. changed from 77 to 8 and Park's P.R.S. from 55 to 0 and gastric erosion disappeared on gastroscopy. Conclusions: These results suggest that and Wihwa herbal-acupuncture has good effect on chronic gastritis. But further studies are required to concretely prove the effectiveness of Wihwa herbal-acupuncture for treating chronic gastritis.

Thermoelectric Properties of Cu-added Polycrystalline Bi2O2Se Oxyselenide

Si-young Bae,Se Woong Lee,Hyun-Sik Kim,Okmin Park,Hyunjin Park,Won-Seon Seo,Sang-il Kim 대한금속·재료학회 2022 대한금속·재료학회지 Vol.60 No.12

Bi2O2Se oxyselenide has been actively studied as a potential n-type thermoelectric material becauseof its intrinsically low thermal conductivity and high Seebeck coefficient (S). However, Bi2O2Se has very lowelectrical conductivity (σ), resulting in relatively poor thermoelectric performance. Herein, we investigate theeffect of Cu addition on the electrical and thermal transport of n-type polycrystalline Bi2O2Se. A series ofCuxBi2O2Se (x = 0, 0.0025, 0.005, and 0.0075) polycrystalline samples were synthesized by a conventional solid state reaction. Tetragonal Bi2O2Se was successfully synthesized, and its lattice parameters graduallydecreased with the addition of Cu. Further, σ decreased and the magnitude of S increased with increasingCu content, according to the trade-off relationship between these parameters. Consequently, a maximumpower factor of 0.106 mW m-1 K-2 was achieved for the sample with x = 0.0025 at 300 K, owing to the increasein the magnitude of S. The Hall carrier concentration decreased exponentially with the addition of Cu, whichis mainly attributed to the possible enlargement of the band gap of the Cu-added samples. The lattice thermalconductivity decreased with increasing x, which was attributed to point-defect phonon scattering via Cuaddition. Therefore, a maximum zT of 0.222 was obtained at 790 K for the Cu0.0025Bi2O2Se (x = 0.0025) sample,which was approximately 8% higher than that of the pristine Bi2O2Se sample.

The Outcomes of Hypertransfusion in Major ABO Incompatible Allogeneic Stem Cell Transplantation

Lee Se Hoon,Park Joon Oh,Jung Chul Won,Park Keunchil,Lee Kyoo Hyung,Lee Mark Hong,Lee Kyung Eun,Park Jinny,Kim Kihyun,Kim Won Seog,Im Young Hyuk,Kang Won Ki,Kim Seon Woo,Lee Je Hwan,Park Se Hoon 대한의학회 2004 Journal of Korean medical science Vol.19 No.1

Epidemiological characterization of the antimicrobial resistant Enterococcus isolates from four major rivers in South Korea

Jun Bong Lee(Jun Bong Lee),Se Kye Kim(Se Kye Kim),Hyung Tae Lee(Hyung Tae Lee),Yeon Soo Chung(Yeon Soo Chung),Jae Won Song(Jae Won Song),Jang Won Yoon(Jang Won Yoon) 한국예방수의학회 2023 예방수의학회지 Vol.47 No.1

We investigated the epidemiological characteristics of the antimicrobial resistant Enterococcus isolates from the four major rivers of Korea in 2012. A total 316 surface water samples were collected from three distinct sites (nearby livestock farms, tributaries, and major rivers) at two different seasons (dry season: n = 76, wet season: n = 240). A total 654 bacterial cells were isolated from samples and their genus distribution were determined. We found that Gram-negative bacteria including various genera were prevalent (n = 522, 79.8%), and Enterococcus was the most common genus of Gram-positive bacteria (n = 119, 18.2%). The isolation rate of Gram-negative bacteria was higher in wet season, whereas that of Enterococcus isolates was higher in dry season. The prevalence of Enterococcus isolates was also higher nearby livestock farms than on tributaries and main rivers. Since Enterococcus isolate is a key indicator for animal fecal contamination, the following experiments focused on this microorganism. As compared to a previous report in 2006, the resistance rates in E. faecium to erythromycin (40.0% to 69.9%) and chloramphenicol (0% to 16.4%) were increased, whereas those to penicillin (56.0% to 4.1%) and teicoplanin (36.0% to 0%) were decreased. We also found that antimicrobial-resistant (AMR) E. faecium isolates from rivers and livestock samples shared similar pulsed-filed gel electrophoresis (PFGE) profiles, validating the transmission of AMR Enterococcus isolates from livestock to river. Taken together, this study provides us with detailed information about bacterial contamination status in four major rivers, and highlights the changes in AMR pattern of Enterococcus isolates, which are expected to have originated from livestock.