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소시호합육미지황탕(小柴胡合六味地黃湯)이 간의 생화학적 이상에 미치는 영향에 대한 임상보고
김원찬,이지영,김진아,장혜진,Kim, Won-Chan,Lee, Ji-Young,Kim, Jin-Ah,Jang, Hae-Jin 대한한방내과학회 2006 大韓韓方內科學會誌 Vol.27 No.4
Objectives:The purpose of this study was to examine the efficacy of SosihohapYukmijihwang-tang on seven patients with biochemical abnormality of the liver. Methods: SosihohapYukmijihwang-tangwas administered to patients for over 10 days continuously. Tests of their AST, ALT, r-GTP, ALP were taken before and after taking medicine. Results: Through this method, we found a positive effect of taking this herbal medicine on biochemical abnormality of the liver. Conclusions: The results suggest that taking this herbal medicine not only reduces hepatotoxicity, but also improves liver function. We need more study about this.
김원찬,Kim, Won-Chan 한국대학교육협의회 2004 大學敎育 Vol.130 No.-
대외적으로 고등교육 시장 개방을 통한 고등교육의 경쟁적 환경이 가속화되고 있으나 우리나라 고등교육의 국제적인 경쟁력은 매우 취약하며, 고등교육의 양적 팽창으로 인한 공급 과잉 현상은 고등교육의 질적 수준 제고를 위한 정책의 대전환이 시급함을 보여 주고 있다.
중풍환자(中風患者)의 혈관성치매에 대한 임상적(臨床的) 관찰(觀察)
김원찬,김영석,문상관,고창남,조기호,배영섭,이경섭,박정미,Kim Won-Chan,Kim Young-Suk,Moon Sang-Kwan,Ko Chang-Nam,Cho Ki-Ho,Bae Hyung-Sup,Lee Kyung-Sup,Park Jung-Mi 대한한방내과학회 1998 大韓韓方內科學會誌 Vol.19 No.2
Background : Vascular dementia occurs mainly due to cerebral vascular disease. So we performed this clinical study to investigate the incidence and characteristics of vascular dementia in stroke patients. Methods : This study was performed on the patients hospitalized from April 1, 1998 to August 31, 1998 at the department of circulatory internal medicine, hospital of Oriental medicine, Kyung-Hee University, and diagnosed cerebral infarction or hemorrhage by Brain CT or MRI. we devided the patients into two groups; vascular dementia group and non dementia group according to MMSE-K(Mini Mental State Examination Korean version), Hasegawa dementia scale. Patients were diagnosed dementia using DSM-IV. We compared general characteristics, stoke types and laboratory findings between the two groups and investigated the correlationship between MMSE-K and Hasegawa dementia scale. Results : Results showed that the incidence of vascular dementia was about 27.8% in stroke patients. The greater number of subjects with dementia were women in the lower educational classes and had lower MBI(Moderfied Bathel Index) scores. Vascular dementia were more common in patients with large brain lesion size($>20cm^3$). There was a positive correlationship between Hasegawa scores and MMSE-K.
김원찬 ( Won-chan Kim ) 한국응용생명화학회 2016 Journal of Applied Biological Chemistry (J. Appl. Vol.59 No.3
Secondary cell wall is the most abundant biomass produced by plants. Plant secondary cell wall is composed of a complex mixture of cellulose, hemicellulose, and lignin. Lignin, a phenolic polymer that hinders the degradation of cell wall polysaccharides to simple sugars destined for fermentation to bioethanol. Cell wall biosynthesis pathway-specific biomass engineering offers an attractive ‘genetic pretreatment’ strategy to improve bioenergy feedstock. Recently, we found a transcription factor, MYB7, which is a transcriptional switch that may turns off the genes necessary for lignin biosynthesis. To gain insights into MYB7 mediated transcriptional regulation, we first established a dominant suppression system in Arabidopsis by expressing MYB7-SRDX. Then we used a transient transcriptional activation assay to confirm that MYB7 suppress the transcription of the lignin biosynthetic gene. Taken together, we conclude that MYB7 function as a repressor of the genes involved in the lignin biosynthesis.
반도체 capacitive 지문 센서 및 이미지 합성 방법
이정우,민동진,김원찬,Lee, Jeong-Woo,Min, Dong-Jin,Kim, Won-Chan 대한전자공학회 1999 電子工學會論文誌, D Vol.d36 No.2
본 논문에서는 저 비용, 고해상도 반도체 지문 센서칩에 대하여 논한다. 제작된 테스트 칩은 $64{\times}256$ 센싱 셀(sensing cell)로 구성되어 있으며, 칩의 크기는 $2.7mm{\times}10.8mm$이다. sensing cell 내부에서 일어나는 전하 재분포를 감지하는 새로운 방식을 이용하여 내부의 기생 캐패시턴스의 영향을 효과적으로 제거하는 방법을 제안하였다. 제안하는 방법은 센싱 셀의 감지 능력을 키우므로 센싱 셀의 크기를 줄일 수 있고, 따라서 고해상도의 이미지를 추출할 수 있다. 표준 0.6${\mu}m$ CMOS 공정을 이용하여 제작된 칩은 600dpi의 해상도를 가지는 지문 이미지를 추출한다. 제조 단가를 낮추기 위하여 지문의 부분 이미지들로부터 전체 지문 이미지를 얻어내는 이미지 합성 방법의 가능성과 문제점에 대해서도 논의하였다. This paper introduces a possibility of a low-cost, high-resolution fingerprint sensor chip. The test chip is composed of $64{\times}256$ sensing cells(chip size : $2.7mm{\times}10.8mm$). A new detection circuit of charge sharing is proposed, which eliminates the influences of internal parasitic copacitances. This the reduced sensing-capacitor size enables a high resolution of 600dpi, using even conventional 0.6${\mu}m$ CMOS process. The partial fingerprint image captured therefrom are synthesized into a full fingerprint image with a image synthesis algorithm. The problems and possibilities of image synthesis technique are also analyzed and discussed.
가뭄 스트레스 특이적인 cis-regulatory element의 특성을 기반으로 한 신규 프로모터 구축
김기환 ( Kihwan Kim ),김병규 ( Byeonggyu Kim ),신주형 ( Juhyung Shin ),김원찬 ( Won-chan Kim ) 한국응용생명화학회 2021 Journal of Applied Biological Chemistry (J. Appl. Vol.64 No.1
Droughts are one of the abiotic stresses that hinders the growth and productivity of crop plants. Coping with abiotic stress is necessary to understand the molecular regulatory networks that makes plants respond to adverse environmental conditions. In our experiment to find a combination that can cope with abiotic stress (respond to drought), we screened 5 stressinducible promoters that are expressed only under stress conditions. This founded 36 cis-elements in stress-inducible promoters. With the result we designed 2 synthetic promoters (BL1, BL2) for fine-controlled regulation by assembling ciselements from the native promoters, which are expressed only under stress caused by droughts. Analysis of the transgenic plant (BL1-GUS, BL2-GUS) showed that the synthetic promoters increased the expression of β-glucuronidase (GUS) in transgenic plants under desiccation. Also in the transient activation assay demonstrated that synthetic promoters induced the cotransformation of effector DREB1A and DREB2C. These results expect that the synthetic promoter with a combination of droughtspecific elements can be used to respond to various abiotic stress and is resistant to stress without causing growth retardation.
송민규,이병호,김원찬,Song, Min-Kyu,lee, Byoung-Ho,Kim, Won-Chan 대한전자공학회 1989 전자공학회논문지 Vol. No.
본 논문에서는 두 가지의 새로운 형태의 non-inverting BiCMOS 구동회로를 제안한다. 이들은 pull-dwon용 바이폴라 트랜지스터의 베이스를 pMOS 트랜지스터를 통해 충전시킴을 그 특징으로 한다. 이들의 pull-up시의 지연시간은 기존의 BiCMOS 구동회로들보다 20%~47% 작다. 또한 본 논문에서 제안하는 구동회로에 사용되는 MOS 트랜지스터의 갯수는 기존의 구동회로에서보다 1~3개가 적기 때문에 그 차지하는 면적이 감소된다. In this paper two new non-inverting type BiCMOS drivers are proposed. These are characterized by the use of pMOSFET's in charging the bases of pull-down bipolar transistors. The delay time in pull-up transition of the proposed drivers is 20%-47% shorter than that of the drivers of current using. The proposed drivers use 1-3 fewer MOSFET's in comparison with the drivers of current using.