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서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1994)
김재홍,안진균,정성재,김영태,김중환,김시영,이석종,이홍렬,서호석,김경훈,권혁진,정우권,고우석,이용석,안필수,오준규,오용섭 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.1
Background : In recent years gonorrhoea has been panendemic and remains one of the most common Sexually Transmitted Diseases in the world, especially in developing countries. Objective & Method : For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria Gonorrhoeae(PPNG), Ive have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1994, 168 strains of N. gonorrhoeae were isolated, among which 109 (64,9% ) were PPNG. Conclustion : Our results suggests that the prevalence of PPNG in Seoul is still increasing.
정태기,김현대,류재춘,최석구,유원상 인제대학교 1993 仁濟醫學 Vol.14 No.4
Prostaglandin 합성을 촉진하는 새로운 강압약인 cicletanine의 강압효과를 진료실 혈압과 24시간 활동혈압으로 평가했을 때 상당한 차이를 보여 그 이유를 검토해 보았다. To evaluate antihypertensive effect of cicletanine with both clinic and ambulatory blood pressure monitoring, 10 male hypertensive patients were administered cicletanine, a new antihypertensive stimulating prostaglandin synthesis, in 100∼200 mg daily for 12 weeks. The following were the results. 1.Mean of clinic BP decreased from 161/98 mmHg to 153/98 mmHg. 2.Mean of ambulatory BP changed from 140/91 mmHg to 153/99 mmHg. 3.Side reactions were mild, namely indigestion and constipation. 4.Discrepancy between clinic and ambulatory BP were discussed. In conclusion cicletanine revealed slight antihypertensive effect with clinic blood pressure, but failed to confirm it with ambulatory blood pressure.
鄭石珍,金武泳 全北大學校 敎育大學院 1982 敎育論叢 Vol.2 No.-
Fifty randomly sampled male students (mean age 19 years) at Jeonbug National University in Jeonju city served as subjects in this study. These students were divided into three groups of 5 endomorphs, 36 mesomorphs, 9 ectomorphs according to Heath-Carter's anthropometric method. The one hundred meter dash and 2,000 meter distance run were adopted to measure aerobic and anaerobic motor ability respectively. To determinethe relationship of somatotype to motor ability and the differences of motor ability among somatotype groups, statistical analysis were used. The findings of this study are as follows: 1. The mean somatotype of college freshman was ectomesomorph. 2. Low realtionships existed between the first components of somatotype and aerobic and anaerobic motor ability. 3. The second and the third somatotype components were not related to erobic and auaerobic motor ability. 4. There were significant differences between aerobic and anearobic motor ability among somatotype groups. 5. Mesomorphs were superior to other endomorphs and ectomorphs in track records.
RAPD와 핵 리보솜 DNA ITS2 염기서열에 의한 한국산 전나무속 식물의 유전적 변이 및 계통유전학적 분석
정용환,한상현,오유성,고미희,고석찬,김문홍,오문유 濟州大學校 基礎科學硏究所 2001 基礎科學硏究 Vol.14 No.2
We analyzed the genetic variation and phylogenetic relationship among fourteen taxa of GenusAbies distributed in Korea using random amplified polymorphic DNA (RAPD) and internal transcribed spacer (ITS) 2 sequences of the nuclear ribosomal DNA (rDNA). RAPDs were used for identification of selected taxa by amplification using single 10-mer primers of arbitrary sequence. Fourteen taxa were clearly classified with 10 arbitrary primers, which generated 102 useful polymorphic bands that were evaluated according to the presence or absence of the fragments of equal size. The genetic distance between A. koreana for. chlorocarpa and A. koreana for. rubrocarpa was 0.127, showing the closest among any other pairs. By comparing the base sequences in the ITS2 region of the nuclear rDNA, genetic relationship was assesed among selected taxa. It showed twenty six sites of point mutation (base substitution) in 243 base pairs (bp) of ITS2 region. The G+C contents of ITS2 region were ranged from 58.3% to 61.7%. The value of nucleotide divergence among selected taxa was ranged from 0.4% to 9.8%. These results showed that RAPD and ITS2 sequence analysis was a useful tool for elucidating phylogenetic relationship and selection of specific marker in Abies species.
김정숙,함세영,한석종 부산대학교 환경문제연구소 1998 環境硏究報 Vol.16 No.-
The purpose of this study is to examine chemical characteristics of groundwater for granitic and andesitic rocks in the vicinity of Mt. Geumjung, Pusan city, to establish the possible hydrogeochemical model of groundwater, and to evaluate the potential of groundwater pollution. According to the Piper diagram, groundwater in the study area mostly belongs to Ca^2^+-HCO_3 and Na^+-HCO_3 types. High concentration of Ca^2^- and Na^+ in groundwater are ascribed to the dissolution of plagioclase. Statistical methods (correlation analysis and factor analysis) were introduced to make the interpretation of analyzed data. Factor 1, consisting of pH, EC, Na^+, K^+, NH_4^+, Cl^- SO_4^2 and NO_3^-, explains the: effects of water-rock interaction such as dissolution of plagioclase and mica, and the influence of anthropogenic sources (domestic and industrial wastes). Factor 2, consisting of SiO_2, Ca^2^+ and HCO_3^- explains the dissolution of Ca-plagioclase. A hydrogeochemical modeling code, PHREEQC identifies and quantifies water-mineral reaction in fissures of the bedrock. The result of the modeling indicates the dissolution of major elements and formation of the kaolinite mineral.
熱處理 條件에 따른 PET 織物의 減量加工에 關한 硏究
배정숙,조환,허정순,조용석 대구대학교 산업기술연구소 1985 産業技術硏究 Vol.4 No.-
This study has been undertaken to see the variation of the weight loss, dyeing property, and the tensile strength of the polyethylene terephthalate (PET) fabrics under the influence of the heat setting during the finishing of the fabrics. The fabrics were heat set for 40,80 and 120 seconds, then alkali treated with 5%, caustic soda solution for 40 minutes on temperature of 80℃, and then dyed with blue and red disperse for 30 minutes of the temperature of 130℃, Using these treated materials, color differences and tensile strength were measured. The results were as follows; 1. The weight loss of PET fabrics increased as the heat setting temperature was elevated. 2. weight loss of PET fabrics decreased as heat setting time increased on the temperature over 220℃ 3. The dyeing property of PET fabrics became stable on the temperature below 180℃ not influenced by heat setting time. 4. The tensile strength decreased as the weight loss increased. Consequently, the temperature influences greatly on the weight loss and the dyeing property during the finishing of PET fabrics.
최석원,박하나,정승균 公州大學校 基礎科學硏究所 1997 自然科學硏究 Vol.6 No.-
지구정보시스템(GIS)을 이용하여 충청남도 부여군 서부지역의 산사태 발생 가능성을 분석하였다. 산사태 취약성 분석을 위하여 산사태 발생에 영향을 미치는 사면경사, 토양침식율, 지질, 토지이용도 등과 같은 환경지질학적 요인들을 선정한 후 산사태 발생지역에 대한 통계분석을 행하였다. 분석 결과를 이용하여 database를 구축하고 각각의 자료들을 중첩시켜 산사태 취약성 지수(LSI)를 산출한 다음 이 지수와 분포 면적에 대한 누적곡선을 작성하여 산사태 취약성도를 작성하였다. 산사태 취약성은 연구지역 남쪽과 북쪽 경계부, 그리고 은산면 중앙부 지역에 매우 높게 나타났으며, 은산면 북서쪽과 내산면 일대는 비교적 높은 산사태 취약성을 보였다. 그러나 규암면 일대와 구룡면, 옥산면을 잇는 수계하천을 따라서는 산사태 취약성이 매우 낮게 나타났다. This study used GIS to analyze the possibility of landslide occurrence in the western part of Puyeo-kun, Chung Nam Province. For the regional analysis of landslide, environmental and geological factors such as topographic slope, soil erodibility, geology, landuse which have influence on the landslide occurrence were extracted, and then analyzed statistically for the area of landslide occurrence. With the result obtained by statistical analysis, databases were constructed. LSI were calculated by overlapping each factor. Landslide susceptibility map was obtained by use of LSI and cumulative curve of area. The results of this study show that each border of the south and north regions and the center of Eunsan-myeon have the very high susceptibility and northwest of Eunsan-myeon and side area of drainage between Gurong-myeon and Oksan-myeon have the very low landslide susceptibility.
17β-Estradiol의 심근 보호작용에 대한 연구 ; 재관류 부정맥을 유발한 동물실험
홍정석,김원,조규종,이미우,장성은,임경수 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4
Background: Although reperfusion certainly prevents tissue ischemia from possible cardiac death, several lines of evidence suggest that reperfusion may paradoxically aggravate the frequency of serious reperfusion-induced lethal arrhythmias. It has been reported that acute administration of estrogen at physiological concentrations reduced with myocardial ischemic injury in women with coronary heart disease. In studies with canines, acute administration by either the intra-muscular or the intra-coronary route similarly prevented ischemia and reperfusion dysrhythmias and also reduced the infarct size because the estrogen increased the distal coronary perfusion pressure, scavenged free radicals and had other effects during both ischemia and reperfusion. However, the canine heart is notoriously well collateralized. 17β-estradiol induces very little vasorelaxation in cat coronary rings, suggesting that increased ischemic myocardial blood flow dose not contribute to the protective effect. In the present study, employing a cat model of regional cardiac ischemia, we examined whether reperfusion rendered after acute administration of 17β-estradiol could lower the incidence of reperfusion-induced lethal arrhythmia and the death rate. Method: Adult mongrel male cats(n=31, 2.7∼4.5 kg) were anesthetized under positive-pressure artificial ventilation with room air. Electrocardiograms were recorded. The animals of the control group(n=15) were subjected to 20-minute left anterior descending coronary artery(LAD) occlusion followed by abrupt reperfusion. The animals in the experimental 17β-estradiol(2 or 20 ㎍/kg) group were subjected to ischemia/reperfusion insult following drug treatment: 17 β -estradiol was applied intravenously within the 60 seconds just before LAD ligation followed by abrupt reperfusion. The Fisher's exact test was used to compare the data from different animal groups(p<0.05). Results: The number of arrhythmias(ventricular premature beat, ventricular tachycardia and ventricular fibrillation) emerging during the reperfusion phase were not statistically different from that in the control group. The death rate in the 17β-estradiol 20㎍/kg group was lower from that in the control group(P value = 0.039). Conclusion: Acute administration of 17β -estradiol at a supraphysiological concentration might produce cardioprotective effects, not by modificating the coronary blood flow into the threatened myocardial region, but by other mechanisms that directly or indirectly increase the intrinsic myocardial ischemic tolerance in the cat during the reperfusion phase.
炭素纖維와 高分子 matrix간의 界面 結合力 增加를 위한 炭素纖維의 表面처리
맹기석,채종훈,박병재,박정기,주혁종 忠南大學校 産業技術硏究所 1988 산업기술연구논문집 Vol.3 No.2
The surface of the carbon fibers has been treated under gas-phase oxidation, liquid-phase oxidation, and electrolytic oxodation. From the point of the surface-treat processing and fiber properties, the electrolytic oxidation is shown to be most efficient. The effects of the process variables such as oxidation time, current density, and type of electrolytes related to the anodic oxidation on the properties of the fibers have been evaluated. The optimum values of these variables might be available for better properties of the carbon fibers and their composites.