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도원석,김경호,김갑성,Do, Won-Seok,Kim, Kyung-Ho,Kim, KaP-sUNG 대한침구의학회 2001 대한침구의학회지 Vol.20 No.4
Objective : The purpose of this study is to investigate the effects on WBC counts and each differential of neutrophils, lymphocytes, monocytes in whole blood sample of each experimental Aqua-acupuncture treated mice groups PCortex Ulmi Pumilae(CU), Ramulus Cinnamomum(RC), Radix Achyranthes(RA), Apitoxin(BV), Calculus Bovis Fel Ursi Moschus compound(BUM). Materials & Method : All the BALB/c mice used in this study were bred and maintained in our pathogen-free mouse facility and were 6 weeks of age at the start of the experiment. The experimental model of arthritis was induced by injecting 300${\mu}g$/kg LPS to all mice knee joint. The each of Aqua-acupuncture(Cortex Ulmi Pumilae, Ramulus Cinnamomum, Radix Achyranthes, Apitoxin, Calculus Bovis Fel Ursi Moschus compound) was injected into GB34(陽陵泉) of mice groups every other day for 6 times. And the WBC counts and each differential of neutrophils, lymphocytes, monocytes were measured at the 3rd, 7th and 14th day after LPS injection. Results : 1. The WBC counts were significantly decreased compared with the control(CON) group in every Aqua-acupuncture groups at all days. And at the 14th day, BV & BUM groups were more significantly decreased than RA group. 2. The Neutrophil's ratio was significantty increased compared with the CON group in CU & RC groups at the 3rd day and RC group was more significant than CU group. But at the 7th and 14th day, every Aqua-acupuncture groups were significantly increased compared with the CON group and at the 7th day, RC group was more significant than RA, BV & BUM groups and at the 14th day, RC, BV & BUM groups were more significant than RA group. 3. The Lymphocyte's ratio was significantly decreased compared with the CON group in RC group at the 3rd day. At the 7th day, CU, RC & BV groups were significantly decreased compared with the CON group. At the 14th day, every Aqua-acupuncture groups were significantly decreased compared with the CON group and RC group was more significant than RA group, 4. The Monocyte's ratio was significantly decreased compared with the CON group in every Aqua-acupuncture groups at the 7th day. At the 14th day, BV & BUM groups were significantly decreased compared with the CON group. Conclusion : According to the above results, it was concluded that CU & RC groups were more effective at the early period of this experiment, and at the latter period, BV & BUM groups were more effective than others. RA group was less effctive than others.
불평형 전원 조건에서 MMC HVDC 시스템 전력제어를 고려한 순환전류 분석 및 제어
도원석(Won-Seok Do),김시환(Si-Hwan Kim),김태진(Tae-Jin Kim),김래영(Rae-Young Kim) 대한전기학회 2014 대한전기학회 학술대회 논문집 Vol.2014 No.4
본 논문은 불평형 계통 전원 조건에서 모듈형 멀티레벨 컨버터를 이용한 HVDC 시스템의 순환전류에 대한 분석을 보여주고 있다. 먼저 모듈형 멀티레벨 HVDC 시스템의 기본 구조 및 시스템 동특성에 대해 해석을 하고, 이러한 해석을 바탕으로 불평형 계통 전원에 사용되는 대표적인 전력 제어기를 대상으로 정상 및 불평형 계통 전원 조건하에서의 순환전류의 모델링과 이에 대한 해석을 제안한다. 이를 통해 전력 제어기의 적용을 위해 실제적으로 고려되어야 할 사항을 시뮬레이션을 통하여 검증한다.
불평형 전원 조건에서 MMC 기반 HVDC 시스템 순환전류에 관한 연구
도원석(Won-Seok Do),김시환(Si-Hwan Kim),김태진(Tae-Jin Kim),김래영(Rae-Young Kim) 대한전기학회 2015 전기학회논문지 Vol.64 No.8
This paper presents a study of circulating current of modular multi-level converter (MMC) based a high voltage direct current (HVDC) system under unbalanced grid conditions. Due to the connection of a dependent DC source in each phase, the MMC system inherently generates the power ripple of double-line-frequency components in the AC-side and as a result, the additional sinusoidal current named circulating current flows through the each arm. Reliability improvement of HVDC system under an unbalanced grid condition is one of the important criteria. Generally, the modeling of the circulating current is based on the power relation between DC-side and AC-side. However, the method is not perfectly matched in the MMC system due to the difference of the structural characteristic. In this paper, improved modeling method of circulating current is proposed, which is based on the inner arm power. The proposed method is verified by several simulations to have good agreement of the circulating current components.
요추관협착증의 한의학적 보존적 치료에 대한 임상적 고찰
황재연,도원석,Hwang, Jae-Yeon,Do, Won-Seok 대한침구의학회 2000 대한침구의학회지 Vol.17 No.3
This clinical study was carried out 15 cases with lumbar spinal stenosis patients, who had been admitted and diagnosed by Computed Tomography from June, 1999 to May, 2000, in the department of acupuncture and moxibustion. Hanseo University Oriental Medical Nospital. The results obtained from this study were as follows; 1. We investigated 10 female and 5 male patients. The age distribution was from early 20's to 70's, among which 30's and 50's were most common. 2. The most common duration of symptom was less than a year(46.7%). 3. Regarding to the number of the involved levels, one was 12 cases(80%), two was 3 cases(20.0%). In the one level cases, L4~5 was the most common involved site. 4. Regarding to the clinical symptoms, low back pain was the most common, followed by lower extremity radiating pain, intermittent claudication, lower extremity paresthesia. 5. In orthopaedic examinations, positive sign in Milgram test was 80.0%, positive sign in straight leg raising test was 40.0%, and positive sign in Braggard test was 33.3%. Inneurologic examinations, sensory loss was seen in 60.0%, motor weakness and decreased deep tendon reflex were 26.7% in each. 6. According to clinical symptom scale proposed by Chae(1989), grade I1I was the most common (53.3%), followed by grade II, grade IV, grade I . 7. According to treatment outcome scale proposed by Chae(1989), Good was the most common (73.3%), followed by Excelleat, Fair and Poor.
박지영(Ji-Yong Park),오미정(Mi-Jeong O),이현숙(Hyun-Sook Lee),도원석(Won-Seok Do) 한국차학회 2004 한국차학회지 Vol.10 No.3
Green tea has it's own unique taste and aroma, which is made up of a blend of caffeine, sugars, tannins and amino acid. It was found that flavors and aromas varied, a major contributing factor that altered the taste and aroma can be attributed to the conditions, which in the tea is leached. This was discovered while leching tea in waters containing varied amounts of different chemicals, which influenced the taste and aroma of the tea. The purpose of this study is detecting importance of water, tea and evaluation of tea by investigation of ancient and present literature.
김미영 ( Mi Young Kim ),배수현 ( Soo Hyun Bae ),김형석 ( Hyeong Seok Kim ),이정림 ( Jung Lim Lee ),도원석 ( Won Seok Do ),이선아 ( Sun Ah Lee ),박건우 ( Kun Woo Park ) 대한내과학회 2012 대한내과학회지 Vol.83 No.5
Primary malignant lymphoma of the stomach comprises 1 to 7% of all gastric malignancies and is mostly B-cell type. Anaplastic large cell lymphoma (ALCL) of the stomach is very rare and regarded to have a poor prognosis. A 66-year-old man complained of dyspepsia for 3 days. A esophagogastroduodenoscopic examination revealed a flat, depressed ulcer at the distal antrum. Biopsy of the lesion showed diffuse infiltration of large pleomorphic lymphoid cells that were positive for CD3 and CD30 and negative for cytokeratin and anaplastic lymphoma kinase (ALK). We diagnosed the patient with ALK-negative primary gastric ALCL with multiple lymphadenopathies, and he received systemic chemotherapy. CHOP-like regimens followed by consolidation therapy have been widely used for ALK-negative ALCL. However, the patient maintained complete remission for 36 months with only induction chemotherapy. This case suggests that heavy treatment for ALK-negative ALCL is not required for all patients. (Korean J Med 2012;83:674-678)