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양식장 배출물 발효물의 어류 사료 첨가에 따른 넙치, Paralichthys olivaceus의 혈액학적 변동에 미치는 영향
강주찬,지정훈,송승엽,문상욱,강지웅,이영돈,김세재 한국어병학회 2004 한국어병학회지 Vol.17 No.1
본 연구는 우리나라 주요 양식어류인 넙치, Paralichthys olivaceus를 대상으로 육상수조식양식장 배출물 발효물의 어류 사료 첨가에 따른 혈액학적 변동에 미치는 영향을 검토하였다. 젖산균 및 효모를 사용하여 발효한 양식장 배출물의 이화학적 분석을 실시하였고, 발효물을 0.1, 0.5, 1.0 및 5.0% 농도로 8주간 투여하였다. 투여 4주째 및 8주째에 각 투여 구간별로 혈액학적 항목을 중심으로 그 차이를 확인하였다. 배출물 발효농도별 유의한 차이는 나타나지 않았지만, 분석시기에 따른 적혈구수, 혈색소 농도 및 혈색소 지수가 증가하는 경향을 나타내었으나, 주요 혈청 무기 및 유기성분은 배출 발효물 농도별로 유의한 차이는 나타나지 않았다. 또한 혈청 효소학적 조사에서는 조사시기별로 변동은 나타났지만, 동일 조시시기에서 각 구간별 유의한 차이는 나타나지 않았다. 따라서 이러한 육상 약식장 유래의 배출물 발효산물에 대한 다양한 방면의 연구가 진행되어야겠다. Effects of oral administration with fermented product from sewage in land-based seawater fish farm on haematological disturbance in the olive flounder, Paralichthys olivaceus was investigated. After 4 weeks of conditioning with a basal diet, fish were divided into 4 groups and provided experimental diet (0.1,0.5, 1.0 and 2.0%) supplement of fermented sewage for 80 days. Proximal analysis was performed for the product of sewage which was fermented by lactic acid and yeast. RBC count, hemoglobin concentration and hematocrit value were increased according to the treated periods, however, no statistical difference was observed between control and treatment groups. There were no significant difference in serum organic, inorganic compounds and enzyme activities between control and treatment groups. This study hypothesized that the supplement of fermented product from sewage in land-based seawater fish farm might be an additive sup plement for source of fish diet in view of haematological examination. Recycling of the sewage may be an economic artificial sources of diet for fish aquaculture practices.
강심호,전우형,배주영,이정엽 서울시립대학교 부설 서울학연구소 2003 서울학연구 Vol.- No.21
In 1930's, capitalism gradually became established in Chosun. As Chosun's economy was incorporated into the global capitalistic system, the domestic economy became dependent on the international market. During this time, Kyeong-Seong was transformed into a capitalistic city. Various forms of modern facilities appeared, while urban consumerism constituted the city life. Thus, the everyday life in Kyeong-Seong demanded the acceptance of modern culture in order to adapt to the changing environment. Inside the city, people experienced modern civilization and urban consuming life, and came to adjust their form of living and their viewpoint of the world. This thesis examines the advertisement and text that appears in the newspapers, magazines, and other journalistic material of the thirties in order to determine how the commercials, romance, hobby or entertainment, and the newly discovered "pastoral" influenced the contemporary life and mind. Also, we intend to reveal how these factors took form in the contemporary literature. The contemporary Korean writers were inevitably surrounded by the popular and urban sensibility mentioned above. Even though unconsciously, or sometimes through negative criticism, this sensibility was included in their text. Even the nature that was considered to be a replacement of the desolate and inhuman city life was in fact a filtered form of nature - an image constructed by the popular culture and advertisements. Also, the romance described by the sensitive authors often took the form of a consumer love. Meanwhile, judging from the penetration of commercial statements which appears in several works, there was a growing desire to consume the image. Along with the newly adapted hobbies and leisure culture, the Korean life style went through a significant change, and so did the content of the contemporary novels. The urban sensibility formed in Kyeong-seong during the nineteen thirties can be defined as the common popular sensibility attained by people living in a capitalistic consuming culture. It is attitude of setting the commercial image as a model of life, and is the search of individual life in the standardized and uniform life style of the popular culture. Whether they chose to criticize it or saturate themselves in it, the contemporary writers were unavoidably related to this sensibility and life style.
HCV core protein promotes liver fibrogenesis via up-regulation of CTGF with TGF-b1
Ju Yeop Shin,Wonhee Hur,Jin Sang Wang,Jeong Won Jang,Chang Wook Kim,Si Hyun Bae,Sung Key Jang,Se-Hwan Yang,Young Chul Sung,Oh-Joo Kwon,Seung Kew Yoon 생화학분자생물학회 2005 Experimental and molecular medicine Vol.37 No.2
Liver cirhosis is one of the major complications of hepatitis C virus (HCV) infection, but the me-chanisms underlying HCV-related fibrogenesis are stil not clear. Although the roles of HCV core protein remain poorly understood, it is supposed to play an important role in the regulation of celular growth and hepatocarcinogenesis. The aim of this study was to examine the role of HCV established an in vitro co-culture system with primary hepatic stellate cel (HSC) isolated from rats, and a stable HepG2-HCV core cell line which had been transfected with HCV core gene. The expressions of fibrosis-related molecules trans-forming growth factor β1 (TGF-β1), transforming growth factor β receptor II (TGFβRII), α-smoth muscle actin (α-SMA) and conective tisue growth factor (CTGF) were analyzed via histo-pression levels of matrix metaloprotinase-2 (MP- 2) and colagen type I (Col I) from the co-cultured media were measured by zymogram and ELISA, respectively. The expresions of α-SMA, TGF-β1, Col I, TGFβRII and MP-2 were significantly in-creased in the co-culture of stable HepG2-HCV core with HSC. Moreover, the significant increases of CTGF and TGF-β1 in the HCV core- expresing cels were observed by either Northern or Wes-tern blot analysis. These results sugest that HCV core protein may contribute to the hepatic fibro-via up-regulation of CTGF and TGF-β1.
Novel Modular 3-phase AC-DC Flyback Converter for Telecommunication
Ju-Yeop Choi,J.P.Lee,T.Y.Kim 전력전자학회 2001 ICPE(ISPE)논문집 Vol.2001 No.10
A novel mode of parallel operation of a modular 3-phase AC-DC flyback converter for power factor correction along with tight regulation was recently analyzed and presented The advantage of the proposed converter does not require expensive high voltage and high current devices that are normally needed in popular boost type 3-phase converter. In this paper the detailed small signal analysis of the modular 3-phase AC-DC flyback converter is provided for control purposes and also experimental results are included to confirm the validity of the analysis.
A LOW COST COST SOFT-SWITCHED AC-TO-DC CONVERTER
Ju-Yeop Choi,Hyung-Soo Mok,Taek-Yong Kim 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
A highly efficient single-phase/three-phase compatible ac-to-dc converter is proposed and analyzed, which includes three identical single-phase both soft-switched dc-to-dc converter with boost converter as a preregulator for input power factor correction (PFC) The proposed converter structure provides a cost reduction and easy implementation of compatibility between single-phase 220V and three-phase 220v/380v with their inputs delta or wye connections
Novel Modular 3-phase AC-DC Flyback Converter for Telecommunication
Ju-Yeop Choi,Jong-Pil Lee,Taek-Yong Kim,Joong-Ho Song,Ick Choy 전력전자학회 2002 JOURNAL OF POWER ELECTRONICS Vol.2 No.3
A novel mode of parallel operation of a modular 3-phase AC-DC flyback converter for power factor correction along with tight regulation was recently analyzed and presented. The advantage of the proposed converter does not require expensive high voltage and high current devices that are normally needed in popular boost type 3 -phase converter in this paper the detailed small signal analysis of the modular 3-phase AC-DC flyback converter is provided for control purposes and also experimental results are included to confirm the validity of the analysis