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      • 서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

        김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

        In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

      • KCI등재
      • 초기 변형이 있는 일반 회전체 베어링계의 동조 진동응답해석

        홍성욱,박종혁,서용규 金烏工科大學校 1996 論文集 Vol.17 No.-

        Rotating machinery often encounter excessive vibration due to various sources. Among others, synchronous excitation such as rotating unbalance and initial deformation is acknowledged as essential source affecting the forced vibration of rotor-bearing systems. In the present paper synchronous response is considered in the presence of initial deformation as well as unbalance. The present paper considers general, flexible rotor bearing system, instead of simple rotors as usually adopted in the literature. The present paper intends to reveal the peculiar effects due to initial deformation in general rotor bearing systems which include rotation speed dependent elements and anisotropic nature. Two numerical examples are provided to illustrate the physics of rotor-bearing systems with initial deformations.

      • KCI등재후보

        자돈에 있어 게르마늄 용질액의 급여가 성장 및 혈액학적 변화에 미치는 영향

        홍종욱,권오석,민병준,조진호,진영걸,손경승,강종옥,김인호 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.4

        본 연구의 목적은 이산화게르마늄을 함유한 게르마늄 용질액을 자돈에 급여하였을 때 성장 및 혈액학적 변화에 미치는 영향을 조사하기 위하여 실시하였다. 3원 교잡종 자돈 60두 (평균체중 11.22±0.10㎏)를 공시하였다. 시험설계는 옥수수-대두박 위주의 대조구(CON)와, 대조구 사료내 게르마늄 용질액을 0.5 ppm 첨가한 구(GC0.5) 및 대조구 사료내 게르마늄 용질액을 1.0 ppm 첨가한 구(GC1.0)로 3개 처리를 하였다. 0-10일간 사양시험기간동안, 일당증체량에 있어서 GC0.5 처리구가 약간 높게 평가되었다(quadratic effect, P<0.02). 그러나 전체 시험기간동안, 일당증체량, 일당사료섭취량 및 사료효율에 있어서 처리구간에 유의적인 차이는 보이지 않았다. 영양소 소화율에 있어서는 GC0.5 처리구가 조회분(linear effect, P<0.01; quadratic effect, P<0.04), 칼슘(linear effect, P<0.01; quadratic effect, P<0.01), 인 (linear effect, P<0.02; quadratic effect, P<0.04) 소화율이 유의적으로 높게 평가되었다. 혈액내 neutrophil 농도에 있어서는 게르마늄 용질액의 첨가 수준이 증가함에 따라 유의적으로 증가하는 경향을 나타내었다(quadratic effect, P<0.02). 결론적으로, 자돈 사료내 게르마늄 용질액의 급여가 성장 및 혈액학적 수치에는 영향을 미치지 못하는 것으로 사료된다. This study was conducted to investigate the effects of dietary germanium colloid on the growth performance and hematological values in nursery pigs. Sixty pigs (11.22(0.10 ㎏ average initial body weight) were used in a 20 d growth assay. Dietary treatments included 1) CON (basal diet), 2) GC0.5 (basal diet+0.5 ppm germanium colloid) and 3) GC1.0 (basal diet+1.0 ppm germanium colloid). For d 0 to 10, pigs fed GC0.5 diet grew faster than pigs fed CON and GC1.0 diets (Quadratic effect, P<0.02). However, through the entire experimental period, no statistical differences were found for aver-age daily gain, average daily feed intake and gain/feed. Apparent digestibilities of crude ash (Linear effect, P<0.01; Quadratic effect, P<0.04), calcium (Linear effect, P<0.01; Quadratic effect, P<0.01) and phosphorus (Linear effect, P<0.02; Quadratic effect, P<0.04) in pigs fed GC0.5 diet were greater than for pigs fed CON and GC1.0. Neutrophil concentration in blood increased as the concentration of germanium colloid in the diets was increased with significant difference (Quadratic effect, P<0.02). In conclusion, growth performance and hematological values were not influenced by dietary germanium colloid.

      • HFC-134a와 대체냉매 HFC-152a에 CF_3I를 혼합한 자동차냉매 특성

        권일욱,박찬수,홍경한,문기선,최운수,서의경,윤갑식,이종인,하옥남 朝鮮大學校 機械技術硏究所 2002 機械技術硏究 Vol.5 No.1

        These days, an attention of environment has been increasing all over the world. to prevent the green house effect and destruction of an ozone layer, an ozone destruction potential(ODP) be zero and a refrigerant for low global warming potential(GWP) is needed. HFC-134a, in which hydrogen is mixed instead of chlorine is a refrigerant used for automobile conditioners and its destruction potential is ecologically zero. However, it is not considered as a perfect substitutive refrigerant as its GWP is high. It is studied refrigerant mixtures in which HFC-134a, HFC-152a and CF_3I with low GWP and zero ODP are mixed by experimentally and concluded as follows; 1. with the variation of speed of compressor outside temperature and flow rate, the heat of evaporator and compressor and coefficient of performance was varied, and influenced the air conditioner. 2. The pressure of evaporator was decreased with increasing the speed of compressor and that of the refrigerant HFC-134a was higher 21% than that of azotrope refrigerant mixed with CF_3I. The overall capacity of condensor and evaporator was increased and HGC-134a was higher than azotrope refrigerant mixed with CF_3I 3. The capacity of evaporator with the refrigerant HFC-134a was higher 6% than azotrope refrigerant mixed with CF31 and the required power with zaotrope refrigerant mixed with CF_3I was higher 11% than that of HFC-134a. 4. The COP of the refrigerant FHC-134a was higher 31% in 1000RPM. when outside temperature was increased, COP was decreased. 5. Performance of HFC-134a is better than azotrope refrigerant mixed with CF_3I but prefered zaotrope refrigerant mixed with CF_3I considering the environment.

      • KCI등재

        숙근메밀과 그 근연종의 전기영동을 이용한 Isozymes 및 Protein Patterns 분석에 관한 연구

        허홍욱,김종희,허만규 부산대학교 사범대학 1991 교사교육연구 Vol.22 No.-

        In the genus Fagopyrum, four isozymes have been used in the analysis of allozyme variation by the method of starch gel electrophoresis. Additionally, protein patterns were investigated by the method of SDS-polyacrylamide gel electrophoresis. 1. The assayed results by the method of starch gel electrophoresis: Alcohol dehydrogenase(ADH) showed a band with strong activity in the anodal side. ADH was appeared almost monomorphic. Malate dehydrogenase(MDH), which might be controlled of five or more loci, was very complicated band patterns. The populations of F. cymosum and F. tataricum were appearently monomorphism. But F. esculentum(common buckwheat) was shown polymorphism, and the frequency of fast allele was 22.3% on the average. The 831 seeds examined for 6-phosphogluconate dehydrogenase (6-PGDH) were almost monomorphic. Phosphoglucomutase(PGM) was shown polymorphic at two loci. Each frequency of fast and slow alleles in PGM-2 locus was 22.1% and 1.2% at the F. cymosum.

      • 주민등록제도 및 주민등록정보활용에 대한 연구 : 개인정보프라이버시 권리 확보를 중심으로

        박홍윤,변종화,임동욱 忠州大學校 2003 한국교통대학교 논문집 Vol.38 No.1

        To be progressed in information society, personal information protection is one of the most important things for desirable development of information society. This research investigates personal information infringements and effective protection means in resident registration system and use of resident registration information. First, this research is studied the history of Resident Registration Law(Korea ID law) and need of positive privacy by computer technology improvement, Second, this research evaluated the resident registration system on OECD's privacy protection principles: Collection Limitation, Data Quality, Purpose Specification, Use Limitation, Security Safeguards, Openness, Participation and Accountability. In conclusion, From the previous analysis and normative protection principles, the following alternatives are presented for the privacy protection a. use limitation of resident registration number and revision of the resident registration number system. b. establishment of personal information protective organization which can independently determine personal information protective action and policy. c. government faith restoration to the resident registration system

      • 平面 攪拌槽에서 슬러리에 의한 CO₂氣體 吸收

        朴相郁,朴文基,洪鍾泰 부산대학교 공과대학 1991 工大論文集 Vol.42 No.-

        The rates of absorption of carbon dioxide into water were measured in a stirred cell with plane interface in the presence of fine solids such as activated carbon, white carbon and fused alumina at 25℃ and 1 atm. Experiments for slurries of activated carbon and white carbon showed that the absorption rates increase significantly, which could be explained by the adsorption capacity of these fine particle. Meanwhile, the absorption rates for slurry of fused alumina without adsorption capacity of dissolved gas in slurry were less than those for water. The enhancement of gas absorption into slurries of activated carbon and white carbon could be explained by the diffusion equation based on penetration theory of dissolved gas.

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