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강병모,홍인식 순천향대학교 부설 산업기술연구소 2002 순천향 산업기술연구소논문집 Vol.8 No.1
Population's city centralism phenomenon happened by continuous increase in population and ancient city industry socialization development. According to this, increased demand of capital is state been accelerating radually. Specially, source of a stream security by water lack phenomenon and quality of water change for the worse is difficult. There is the limit in a leakage of water detection method which is using in my country. Therefore, water leakage detection monitoring system that use TDR can search for water leakage point of small quantity as well as correct water leakage point and enforce repair. In this paper we solved difficult of existent product and difficulty of existent sensing method and maintenance through research of special leakage sensing pipe and leakage sensing system. And, we did system of correct most suitable simulation in our country real condition using TDR.
강병모,홍인식 순천향대학교 부설 산업기술연구소 2002 순천향 산업기술연구소논문집 Vol.8 No.1
We are currently in the actual circumstances to be lost as 30 percents our country leakage. A surrounding environment of the water pipe was infected, and increased quality of water pollution phenomenen in conduit pipe by water leakage. And, by water leakage, caused huge economical damage. Is ceilinged in leakage of water detection to using leakage of water detection method in our country now. As well as can not search correct position even if water leakage happens, because leakage of water detection is impossible by real time. In this paper we solved difficult of existent product and difficulty of existent sensing method and maintenance through research of leakage sensing system DB and S/W design in leakage sensign system. And, at the same time, we simulated leakage sensign system and implemented of DB and S/W design.
동해로 유입되는 가곡천과 마읍천에 서식하는 담수어의 지리적 분포
남명모,강영훈,채병수,양홍준 한국어류학회 2002 韓國魚類學會誌 Vol.14 No.4
1999년 4월부터 2000년 10월까지 강원도 삼척시에 위치한 가곡천과 마읍천에서 어류의 지리적분포와 군집구조를 조사하였다. 가곡천에서는 10과 20종, 마읍천에서는 10과 25종의 어류가 확인되었으며, 이 가운데 한국 고유종은 Squalidus multimaculatus, Iksookimia koreensis 그리고 Liobagrus mediadiposalis의 3종이었다. 가곡천의 미기록종은 S. multimaculatus, I. koreensis, Pungitius sinensis sinensis 그리고 Oncorhynchus masou masou이었으며, Zacco platypus와 Z. temmincki가 우점종이었다. 가곡천 상류역에서는 Z. temmincki와 Moroco oxycephalus가 우점종이었으며, 중류역에서는 Z. platypus, 하류역에서는 Cottus Hngiongensis, Chaenogobius urotaenia 그리고 Rhinogobius brunneus가 우점종이었다. 마읍천의 미기록종은 Cyprinus carpio, Pseudorasbora parva, Silurus asotus, O. m. masou, M. oxycephalus, Gasterosteus aculeatus, P. s. sinensis, C. castaneus, Acanthogobius lactipes, Tridentiger brevispines이었으며, Z. platypus가 우점종이었다. 마읍천 상류역에서는 Z. platypus가 우점종이었으며, 중류역에서는 Ladislavia taczanowskii, 하류역에서는 P. s. sinensis가 우점종이었다. 본 조사에서 확인된 어류 가운데, 특히 가곡천에 서식하는 S. multimaculatus와 마곡천에 서식하는 L. taczanowskii와 Nemacheilus toni는 지리분포상 보호되어야하겠다. 가곡천의 종다양성지수는 1.109, 마읍천의 종다양성지수는 1.109로서 종다양성이 높고 군집이 안정되어 있었다. The geographical distribution and community structure of freshwater fishes in the Gagog and Maeup Streams, which flow into the East Sea, were surveyed from April 1999 to October 2000. Twenty species belonging to 10 families were collected in Gagog Stream. Twenty-five species belonging to 10 families were collected in Maeup Stream, including the Korean endemic species Squalidus multimaculatus, Iksookimia koreensis and Liobagrus mediadiposalis. In the Gagog Stream, S. multimaculatus, I. koreensis, Pungitius sinensis sinensis and Oncorhynchus masou masou were newly recorded. The dominant species were Zacco platypus and Z. temmincki. A tendency was seen in regional distribution such that Z. temmincki and Moroco oxycephalus dominated in the upper stream, Z. platypus in the middle stream, and Cottus hangiongensis, Chaenogobius urotaenia and Rhinogobius brunneus in the lower stream. Newly recorded from the Maeup Stream are Cyprinus carpio, Pseudorasbora parva, Silurus asotus, O.m.masou, M. oxycephalus, Gasterosteus aculeatus, P. s. sinensis, C. castaneus, Acanthogobius lactipes and Tridentiger brevispinis. The dominant species was Z. platypus. A tendency was seen in regional distribution such that Z. platypus dominated in the upper stream, Ladislavia taczanowskii in the midddle stream, and P. s. sinensis in the lower stream. Among the noteworthy fishes found in the present study were S. multimaculatus in the Gagog Stream and L. taczanowskii and Nemacheilus toni in the Maeup Stream, These species are considered as species of conservation concern. The species diversity index of the communities were 1.109 in the Gagog Stream and 1.166 in the Maeup Stream. The results indicate that the community structure in each stream is very diverse but stable in its species composition.
국내에서 유행하는 HIV의 전파 경로에 따른 Subtype 분포
이주실,남정구,김성순,강춘,최병선,김옥진,박미선,성봉모,서순덕,전수경,변승옥,신영오,조해월 대한감염학회 2001 감염 Vol.33 No.5
Background : Previous data have been reported that subtype B is prevalent in South Korea, but neither the extent nor the proportion of subtypes could be evaluated. This study was designed to analyze the distribution of HIV-1 subtypes, temporal instructions and transmission dynamics between epidemiological groups. Methods : 1,280 Koreans had been diagnosed as HIV seropositive during the period 1985 to 2000. Among them, 134 individuals were selected for this molecular epidemiological study. 134 DNAs were isolated from uncultured or cultured peripheral blood mononuclear cells. V3-V5 (0.7 kb) fragment of HIV-1 env gene was amplified by nested polymerase chain reaction and was sequenced. Results : HIV-1 isolates from thirty-seven homosexuals were all subtype B (100%). On the other hand, 66 isolates from 94 heterosexuals were subtype B (70%) and 28 were non B subtypes (30% : 13 A, 4 C, 2 D, 8 E , 1 G). Only subtype B strains were isolated from 73 males who were infected with HIV inside Korea while 16 B and 20 non B subtype strains were isolated from 36 males who were HIV infected outside of Korea. However, B and non B strains were isolated half and half from females who were infected inside Korea except one. Conclusion : The HIV-1 subtype B strains are prevalent in Korea from the early HIV infection until present in both homo and heterosexuals. Non B strains have been transmitted from men who were infected outside Korea to their spouses and casual partners. So, we need further study to monitor subtype B and non B HIV transmission in epidemiological groups of Korea, (Korean J Infect Dis 33:311∼318, 2001)
Kang, Byeong-Mo,Lim, Yeong-Seog,Jeong, Woon-Jo,Kang, Byung-Woo,Ahn, Ho-Geun The Korean Institute of Electrical and Electronic 2014 Transactions on Electrical and Electronic Material Vol.15 No.5
We deposited TiAgN and ZrAgN nanocomposite coatings on pure Titanium specimens, by using arc ion plating (AIP) with single alloy targets. TiAg ZrAg alloy targets of 5 wt.%, 10 wt.% silver content by vacuum arc remelting (VAR), followed by homogenization for 2 hours at $1,100^{\circ}C$ in non-active Ar gas atmosphere and characterized these samples for morphology and chemical composition. We investigated the biocompatibility of TiAg and ZrAg alloys by examining the proliferation of L929 fibroblast cells by MTT test assay, after culturing the cells ($4{\times}10^4cells/cm^2$) for 24 hours; and exploring the antibacterial properties of thin films by culturing Streptococus Mutans (KCTC3065), using paper disk techniques. Our results showed no cytotoxic effects in any of the specimens, but the antibacterial effects against Streptococus Mutans appeared only in the 10 wt.% silver content specimens.