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임희대,김태곤,이영섭,고근식 충남대학교 산업기술연구소 1999 산업기술연구논문집 Vol.14 No.2
Compaction water content is a key variable which controls fundamental properties of compacted clay (permeability, deformation and strength). There are three conditions in compaction water content (i.e. dry of optimum, optimum and wet of optimum). Actually, soil mass by compaction is unsaturated condition before seepage therefore, soil suction is the key which is able to explain properties of compacted clay. This paper used results from compacted Pittsburg sandy clay tested under UU test condition from Duncan and Seed in order to determine hyperbolic parameters and simulated behavior of Soyanggang dam as a example. As the results of analysis, dry of optimum presents higher strength and smaller displacement. Wet of optimum is sensitive to water content. Both dry and wet of optimum, any hydraulic fracturing potential does not appear. But dry of optimum is close to hydraulic fracturing.
육근영,이승호,김영곤,임사비나 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2007 東西醫學硏究所 論文集 Vol.2007 No.-
Objectives : Intelligent thermo-acupuncture system (ITA-system) is invented for the convenient operation of thermo-acupuncture therapy. The aim of this study is to investigate the safety of 100 Mb electromagnetic field (EMF) made by ITA-system. Mpthods : We analysed the influence of this EMF on animals in order to experiment in the influence of EMF, male ICR mice were exposed to EMF at different distances from the ITA-system. And we examined weight, diet, behavior, organ and hematological changes. Results & Conclusions : According to the animal studies with mice about EMF influence, there was no significant difference between the control group and the exposed groups about them. In conclusion, the safety of 100 kHz EMF made from ITA-system through this animal research was checked.
퉁퉁마디로부터 염에 의하여 유도되는 Aldolase 유전자의 분리 및 발현분석
차준영,네티 엘마와티,김순길,이증주,임채오,정우식,이곤호,손대영 Plant molecular biology and biotechnology research 2003 Plant molecular biology and biotechnology research Vol.2003 No.-
Soil salinity is one of the most serious abiotic stresses limiting the productivity of agricultural crops. To cope with salt stress, plants respond with physiological, developmental and biochemical changes, including the synthesis of a number of proteins and the induction of gene expression. Salicornia herbacea is a halophytic plant that grows in salt marches and on muddy seashores. In order to understand the biochemical and molecular mechanisms of salt tolerance in S. herbacea, we isolated several genes that involved in the salt tolerance by mRNA differential display.Here we report the cloning of a cDNA encoding fructose-1, 6-bisphosphate aldolase, named ShADL, which is 1293 bp long and contains an open reading frame consisted of 359 amino acids with calculated molecular mass of 39 kDa. ShADL protein showed 86% identity with Arabidopsis and 78% with aldolase of common ice plant. Northern blot analysis revealed that the transcript of ShADL gene was increased dramatically depending on the NaCI concentrations.
Jeong, Hoar Lim,Jung, Yang-Sook,Jun, Jin-Su,Yeom, Jung Sook,Park, Ji Sook,Seo, Ji-Hyun,Lim, Jae-Young,Park, Chan-Hoo,Woo, Hyang-Ok,Youn, Hee-Shang,Ko, Gyung-Hyuck,Baik, Seung-Chul,Lee, Woo-Kon,Cho, My The Korean Society of Pediatric Gastroenterology 2012 Pediatric gastroenterology, hepatology & nutrition Vol.15 No.2
Purpose: Commercial enzyme-linked immunosorbent assay (ELISA) kits have been considered less reliable for children than for adults. The aim of this study was to compare four ELISA kits and in-house immunoblotting based on the analysis of anti-H. pylori-IgG antibody reactivity. Methods: A total of 399 serum samples were collected at the GNU Hospital during 1998-1999. All sera were tested using ELISA and immunoblotting. Statistically significant differences were determined by the $x^2$ test. Results: The overall seropositivity rates using GAP IgG, Genedia IgG, HM-CAP, Pyloriset EIA-G, and immunoblotting were 13.0%, 25.1%, 18.3%, 15.8%, and 62.9%, respectively. Immunoblotting showed a higher seropositivity rate than did all four ELISA kits in all age groups. Genedia IgG had the highest seropositivity among the ELISA kits. The seropositivity rate for children aged 13 to 18 months was lowest, and that of children aged 15 years was highest (90.0%). The seropositivity rate for children aged 7 months to 5 years was significantly lower than that for children aged 6 to 15 years among the four ELISA kits (p<0.0001) and immunoblotting (p=0.02). Conclusion: Immunoblotting is the most sensitive test for detection of anti-Helicobacter pylori IgG antibodies among the serological tests in this study. These results emphasize the need for standardization when commercial ELISA tests are used in different nations or in young age groups. Immunoblotting could be a suitable noninvasive assay for serodiagnosis and seroepidemiologic study of H. pylori infection in Korean children.
An Implementation of Acoustic-based MAC Protocol Multichannel Underwater Communication Network
Lim, Yong-Kon,Park, Jong-Won,Kim, Chun-Suk,Lee, Young-Chul The Korea Institute of Information and Commucation 1997 한국정보통신학회논문지 Vol.1 No.1
This Paper Proposes a new efficient system design strategies for the acoustic-based underwater multiple modem and media access control protocol. The system aims to establish the acoustic-based communication network of an underwater vehicles for deep sea mining, which ensures a certain level of maximum throughput regardless of the propagation delay of acoustic and allows fast data transmission through the acoustic-based multiple channel. A media access control protocol for integrated communication network and it's acoustic-based communication modems that allows 'peer-to-peer' communication between a surface mining plant multiple underwater system is designed, and the proposed media access control protocol is implemented for its verification. Furthermore, a proposed design strategies which make it possible to control the multiple vehicle for an underwater mining is presented in this paper.
10 년간 경상의대 의학과 학생의 A 형 간염 항체 양성률 변화와 경상의대 소아과 근무 의료인의 항체 양성률
임재영,고경혁,조명제,이시은,조중현,윤희상,백승철,이우곤,이광호,우향옥,조윤경,박찬후,정양숙,이수진 대한소화기학회 1999 대한소화기학회지 Vol.33 No.4
Background/Aims: Korean population has been suggested to be minimally exposed to hepatitis A virus (HAV) for recent 20 years. Therefore, hepatitis A epidemics may occur among medical students and medical personnels who care the asymptomatic patients with hepatitis A. We investigated the changes in anti-HAV IgG positive rate among the medical students for 10 years and the curren anti-HAV IgG positive rate among the medical personnels in Chinju. Methods: Serum anti-HAV IgG was measured using the commercially available HAVAB radioimmunoassay kit. The sera had been collected from 780 sophomore medical students during 1988-1997 and from 95 pediatric medical personnels at the Gyeongsang National University Hospital in December, 1997. Results: The anti-HAV IgG positive rate of the sophomore medical students was 87.5% in 1988, 86.7% in 1989 83.8% in 1990, 75% in 1991, 85% in 1992, 70% in 1993, 56.3% in 1994, 58.8% in 1995, 53.8% in 1996 and 38.8% in 1997. The anti-HAV IgG positive rate among the pediatric medical personnel (mean age ±S.D.; 26.4 ±3.1) was 65.3%. Conclusions: These suggest that the population susceptible to HAV exists among medical students and pediatric medical personnels. Therefore, we should se up the preventive modalities against hepatitis A virus infection among these high risk groups.
Lim, Chaehyun,Kim, Changmin,Gwon, Ohhun,Jeong, Hu Young,Song, Hyun-Kon,Ju, Young-Wan,Shin, Jeeyoung,Kim, Guntae Elsevier 2018 ELECTROCHIMICA ACTA Vol.275 No.-
<P><B>Abstract</B></P> <P>Perovskite oxides have received considerable attention as useful electro-catalysts for Li-air batteries due to their properties of excellent catalytic activity, electrical conductivity, and durability. The nanostructure can enhance the electrochemical performance of perovskite oxides by enlarging the catalytic active sites. In this study, nano-size Nd<SUB>0.67</SUB>Sr<SUB>0.33</SUB>CoO<SUB>3-<I>δ</I> </SUB> (NSC) perovskite particles with a particle size of 20–50 nm and a specific surface area of 12.759 m<SUP>2</SUP> g<SUP>−1</SUP> were successfully synthesized by a microemulsion method. The NSC perovskite particles exhibit excellent electrocatalytic activity particularly in the oxygen evolution reaction (OER) with a high limiting current density of 33.68 mA cm<SUP>-2</SUP> at 0.9 V <I>vs</I>. (Hg/HgO). This excellent catalytic activity can be ascribed to the existence of Co<SUP>3+</SUP> and the enlarged surface area. Co<SUP>3+</SUP> provides catalytically active site by forming Co<SUP>3+/4+</SUP> redox couple and the enlarged surface increases active sites for reactants and catalyst particles. In this regard, nano-size NSC particles prepared by the microemulsion route provide excellent and stable electrochemical performance in the hybrid Li-air battery.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A nano-structured perovskite oxide catalyst, Nd<SUB>0.67</SUB>Sr<SUB>0.33</SUB>CoO<SUB>3-<I>δ</I> </SUB> was successfully synthesized <I>via</I> inverse micro-emulsion method. </LI> <LI> The microemulsion method not only provides exensive surface area, but also increases Co<SUP>3+</SUP> and adsorbed oxygen species. </LI> <LI> The extended surface area and increased Co<SUP>3</SUP> <SUP>+</SUP> and adsorbed oxygen species enhace the electro-catalytic activity. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
임창영,김형곤,전영빈,유권,이윤우,장진순,전병훈 인제대학교 1992 仁濟醫學 Vol.13 No.4
발열과 설사를 주소로 입원한 31세 남자에서, Sallmonella typhi에 의한 것으로 추정되는 감각-신경성 난청을 동반한 장티푸스 1례를 보고한다. Typhoid fever is an acute systemic febrile disease caused by Salmonella typhi, characterized by persistent fever, hepatosplenomegaly, rose spots, relative bradycardia and leukopenia. While a variety of complications may be seen in typhoid fever, the sensorineural healing loss has been rarely observed. Recently we experienced a case of typhoid fever complicated by sensorineural hearing loss in a 31-year-old male patient, which was improved with ciprofloxacin administration and supportive care. We report this rare with a review of the literature.