서울 강서지역 1개 대학병원에서 성인 급성 신우신염의 원인균과 항생제 감수성

황병연,이재갑,박대원,이연주,김성범,엄중식,손장욱,정희진,김우주,김민자,박승철 대한감염학회 2003 감염과 화학요법 Vol.35 No.5

목적 : 3년간 서울시 강서지역의 1개 대학병원에서 입원치료를 받은 성인 급성 신우신염 환자를 대상으로 원인균과 항생제 감수성을 조사하고, 향후 급성 신우신염의 초기 경험적 치료 항생제를 제안하고자 하였다. 방법 : 1999년 1월부터 2001년 12월까지 3년간 고려대학교 의과대학 구로병원에 상부요로감염으로 내원한 16세 이상 환자 229명의 의무 기록을 검토를 통하여, 인구학적 특성, 원인균, 항생제 감수성, 초기 항생제 사용 양상과 입원기간을 조사하였다. 결과 : 연구에 포함된 229명을 118명의 단순 신우신염군과 111명의 복잡 신우신염군으로 구분 하였다. 단수 신우신염의 평균 발생 연령은 38.2세와 복잡 신우신염 56.1세로 복잡 신우신염 환자의 연령이 유의하게 높았다(P<0.001). 양군 모두에서 원인균 중 E. coli의 분리율이 가장 높았으며 항생제 감수성 결과 ampicillin, trimethoprim-sulfame-thoxazole에는 높은 내성률을 보였고, ciprofloxacin, gentamicin, cefotaxime에 대한 감수성은 비교적 높았으나 복잡 신우신염의 경우 단순 신우신염에 비하여 ciprofloxacin, gentamicin에 대한 감수성이 다소 낮은 것을 확인할 수 있었다. 평균 입원 기간, 항생제 투여 기간에 있어서도 복잡 신우신염군에서 유의하게 길었다. 결과 : 본 연구의 결과 서울의 강서 지역에서 대학병원급에 치료 의뢰되는 단순 급성 신우신염의 치료에 있어 1차 항생제로 3세대 cephalosporin, aminoglycoside, quinolone 중 한가지를 초기 경험적 치료제로 사용을 고려하여야 할 것으로 사료된다. Background : The purpose of this study is to recommend the initial therapeutic regimen for adult patients with acute pyelonephritis (APN) according to the changes of antimicrobial susceptibility patterns of causative microorganisms isolated from patients with APN. Methods : We reviewed medical charts of 229 APN patients, who had been treated at Korea University Guro Hospital from 1st of January. 1999 to 31st of December, 2001. We investigated the demographic data, clinical findings, durations of hospital treatment, antimicrobial susceptibility patterns of the causative microorganisms and initial antibiotic regimens in patients with APN. Results : In this study, 229 adult patients with APN were classified into simple APN patients (118 patients, 51.5%) and complicated APN patients (111 patients, 48.4%). Mean age of patients with simple APN was 38.2±14.1 years old and that of patients with complicated APN was 56.1±14.9 years old. Mean age of patients with complicated APN was significantly higher than that of simple APN patients (P<0.0001). Escherichia coli was the most common microorganism both in simple APN (96.7%) group and in complicated APN (90.6%) group. Antimicrobial susceptibility of E. coli was at the low level of ampicillin (31%/20%) and trimethoprim-sulfamethoxazole (42.6%/34.2%) in each group. In contrast, ciprofloxacin (11.5%/22.7%), gentamicin (16.4%/22%) and cefotaxime (0%/8.2%) resistance remained at relatively lower level. In comparison of simple APN with complicated APN, ciprofloxacin and gentamicin resistances were higher in complicted APN group. Average duration of hospitalization (5.9±2.3 days/8.2±4.6 days) and duration of antibiotic use (12.1±3.9 days/15.3±10.0 days) were significantly longer in complicated APN. Conclusions: The results of this study suggests that 3rd cephalosporin, aminoglycoside or quinolone antibiotic would considered as one of the initial therapeutic regimen for patients with simple APN in southwestern Seoul.

Binding Energy of Oxigen and Methane Adsorbed on Bundles of Open-Ended Single-Wall Carbon Nanotubes

서주연,유대황,곽진성,황윤회,김형국 부산대학교 유전체물성연구소 2004 유전체 논문집 Vol.3 No.

The adsorption of oxygen and methane on the bundles of open-ended single wall carbon nanotube(SWNT) was studied using the volumetric adsorption qst was obtained from the adsorption isotherm measurements performed at different temperatures. The trend in the values of the methane isosteric heat of adsorption showed three regions, representative of the adsorption on the different types of adsorption sites. In case of oxygen, on the other hand, such distinguishable regions were not appeared in the N-qst graph. From the results of qst the binding energies of oxygen and methane adsorbed on open-ended SWITs were estimated.

경북 감포지역 제3기층에 산출되는 불석광물 및 점토광물의 산상 및 분포

황진연 부산대학교 기초과학연구소 1988 부산대학교 기초과학연구소 연구논문집 Vol.8 No.-

감포지역 제3기층의 응회암질암석 중에는 clinoptilolite, mordenite, smectite 및 cristobalite 등의 변질광물이 X선회절분석에 의해 많이 검출된다. 이들 광물의 광물조합에 의해 4개의 변질분대로 구분되었다. 즉, I. 미변질유리대, II-A. 점이대, II-B. clinoptilolite대, II-C. mordenite대이다. I,II-A 및 II-B대는 전동층에 주로 분포되며, II-C대는 장항층에 분포되어 나타난다. 변질광물의 분포상태 및 광물학적 성질등으로 보아, 이들 변질분대는 속성변질작용에 의한 것으로 생각된다. 그러나 본지역의 일부지점에서는 국부적인 열수변질작용에 의한 것으로 생각되는 광물도 관찰된다. In the Tertiary tuffaceous rocks of Gampo area, the alteration minerals such as clinoptilolite, mordenite, smectite and cristobalite are detected by using the powder X-ray diffraction method. On the basis of the mineral assemblages, the alteration zones are grouped into four zones; I. unaltered glass zone, II-A. transitional zone, II-B. clinoptilolite zone, II-C. mordenite zone. The zones, I. II-A and II-B are distributed in the Jeondong Formation, and the zone II-C is found in the Janghang Formation. Judging from the distribution and mineralogical properties of the alteration products, it is recognized that the alteration zones were formed by diagenetic alteration process. Besides the diagenetic alteration minerals, hydrothermally altered minerals are locally observed in some parts of this area.

CD ROM을 이용한 교육프로그램이 단기입원수술 환자의 수술 전 불안과 수술 후 자가간호 수행을 위한 지식에 미치는 효과

황연자,박연환,박인선,김남이,김정미,김진영 성인간호학회 2004 성인간호학회지 Vol.16 No.1

Purpose: The purpose of this study was to investigate the effect of nursing education using a CD ROM on the anxiety and knowledge of the patients having minor surgery. Method: Forty patients hospitalized in K hospital in Seoul from April to August 2002 participated in this study. In the experimental group, twenty patients received nursing education on the operational procedures and post-operational care. The control group, received conventional nursing care only. Anxiety experienced by patients was measured by Spielberger's State-Trait Anxiety Inventory, and knowledge was measured by an instrument developed by Rahe et al. The data were analyzed by SPSS statistical program. Result: There were no significant differences in anxiety level between two groups. However, subjects in the experimental group were found to have significantly higher postoperative knowledge levels than those in the control group, and were very satisfied with the CD ROM program. Conclusion: The nursing education program using CD ROM before minor surgery proved to be an effective nursing intervention to increase knowledge of patients and contribute to their self care after discharge. To decrease anxiety of the surgery, the nursing education program should be combined with supprortive emotional nursing intervention, such as touch, and massage.

저수축형 폴리머 콘크리트의 제조 및 물리·역학적 특성

연규석,이윤수,최동순,정경현,황진하 강원대학교 부설 석재복합신소재 제품연구센터 2000 석재연 논문집 Vol.5 No.-

본 연구에서는 폴리머 콘크리트의 수축저감을 목적으로 수지량, 수축저감제함량과 S/a 비등을 변화시켜 경화수축의 변화와 강도 특성을 실험적으로 구명하였다. 경화수축량은 수치량이 105%일 때 보다 11.5%일 때, 즉 수지량이 증가할수록 커짐을 알 수 있었다. 수축저감제의 첨가에 따른 경화수축량은 감소함을 알 수 있었다. B10.5-SR10일 경우 수축저감제가 첨가되지 않았을 때 보다 약 30%, B10.5-SR20 일 경우 약 53%, B11.5-SR10일 경우 약 31%, B11.5-SR20 일 경우 약 47% 정도의 수축저감의 효과를 볼 수 있었다. S/a 비에 따른 경화 수축챨ㅇ은 S/a 60일 때 가장 적은 값을 보였으며, S/a 50, S/a 40 일때는 S/a60 일 때 가장 적은 값을 보였으며, S/a 50, S/a 40일 때는 S/a 60일 때 보다 각각 10%, 30% 정도 수축량이 증가함을 알 수 있었다. 압축 및 휨 강도특성은 수지량이 증가할수록 높아지고, 수축저감제의 첨가량이 증가할수록 낮아짐을 알 수 있었다. S/a 비에 따른 강도 특성은 압축강도와 휨강도 모두 S/a 비가 60일 때 가장 큰 값을 보였으며, S/a 비가 50,40 순으로 감소하였다. Many different polymer based concrete materials are known today, but the large setting or hardening shrinkage of polymer concrete is a problem to overcome in their practical applications. The setting shrinkage reaches about five to ten times the drying shrinkage of ordinary cement concrete, i.e, 50 to 60 ×10^4. This paper deals with a reduction in the hardening shrinkage of unsaturated polyester resin concrete which is treated with respect to shrinkage-reducing agent content, S/a ratio and catalyst content, and tested for length change during hardening, and flexural and compressive strengths. It is shown that the change of shrinkage-reducing agent content and S/a ration the length change of the unsaturated polyester resin concrete during hardening.

綠泥石と絹雲母の硫酸溶液による溶媒

黃辰淵 부산대학교 기초과학연구소 1988 부산대학교 기초과학연구소 연구논문집 Vol.8 No.-

Samples of a mixture of Fe, Mg-chlorite and sericite, a Mg-chlorite, a Fe-chlorte, and a sericite were treated with 0.05 N H₂SO₄in a closed system at 25,50, and 80℃ for varying periods of time, and the susceptibility of the minerals to the treament, in terms of dissolution of cations such as Si, Al, Mg, Fe, and K, has been investigated. The dissolution rate of the cations increased with temperature for all samples examined, and the rate was higher in the cholrites than in the sericite at all temperatures. The dissolution of the cations was incongruent, and the chlorites released Al, Mg, and Fe more rapidly than Si. It seemed, for the chlorites, that the cations in the interlayer and octahedral sheets were dissolved at a higher rete than those in the tetrahedral sheets. It was found also that the Fe-rich chlorite was more susceptible to the acid treatment than the Mg-rich one.

내후성 폴리머 콘크리트의 제조 및 특성연구

연규석,김기성,이기원,황진하 강원대학교 석재복합신소재제품연구센터 2001 석재연 논문집 Vol.6 No.-

본 연구에서는 불포화 폴리에스터 수지비율을 변수로 하는 자외선 흡수제 첨가유ㆍ무 시편에 대한 Xenon lamp, 52±3℃, 실내습도 50±5%, 시험체 걸이 직경 20inches의 조건의 내후성 시험기로 각각 100, 200, 400, 800, 1600 시간 인공촉진열화 시킨 시편의 색차변화를 측정하여 불포화 폴리에서터 수지량 및 자외선 흡수제의 첨가에 의한 열화특성을 고찰하였다. 그 결과 100% 불포화 폴리에스터 수지량 및 자외선 흡수제의 첨가에 의한 열화특성을 고찰하였다. 그 결과 100% 불포화 폴리에스터 수지 시편과 상대적으로 수지비율이 큰 폴리머 페이스트에서는 자외선 조사시간에 따른 큰 색차변화 및 자외선 첨가에 의한 열화방지 효과를 확인 할 수 있었고 불포화 폴리에스터 수지비율이 상대적으로 작은 폴리머 모르타르에서는 자외선 조사에 의한 색차변화 및 자외선 흡수제 첨가에 의한 열화방지가 그리 크지 않음을 확인할 수 있었다. 이러한 것은 야외에 설치되는 폴리머 모르타르(콘크리트) 제품은 자외선에 의한 열화가 그리 크지 않음을 보여주는 결과이기도 하다. This study was to investigate the characteristics of deterioration of polymer concrete due to wethering Two sets of specimens with a various mixing ratio of unsaturated polyester resin, UV absorber added and not-added, were artificially exposed by the weathering test machine to ultraviolet (UV) radiation 100, 200, 400, 800 and 1600 hours under the conditions that the temperature was set by Xenon lamp at 52±3℃, the chamber humidity at 50±5%, and specimen rack diameter 20 inches to measure the color change to examine the characteristics of deterioration. Color difference increased as the exposure time to UV radiation increased, but decreased 20-30%, comparing to the case of non-absorber added, as the ultraviolet absorber was added. On the other hand, the effect of addition of ultraviolet absorber decreased as addition of aggregate increase. Thus, the effect of addition of ultraviolet absorber was a little on the polymer concrete containing aggregate, Especially, increment of color difference in polymer mortar specimen was lower than that of polymer resin and polymer paste specimen, when the resin volume for specimen mixture proportion was below 30%, as fine aggregate increased. As a result, outdoor-installed polymer concrete product is believed to be hardly affected by ultraviolet radiation.

釜山市 九月山의 風化物中 粘土鑛物의 特性 및 成因

黃辰淵,張明翊 부산대학교 기초과학연구소 1994 부산대학교 기초과학연구소 연구논문집 Vol.14 No.-

The various weathering products derived from andesitic rocks in the Guweol mountain area of Pusan have been studied in order to investigate the occurrence, characteristics and evolutional trend of clay minerals in the weathered rock and soil using mainly X-ray powder diffraction method. Kaolinite and halloysite are very abundant in the weathered rocks and soils derived from andersitic rocks of this area. Also, 12Å-and 14Å-minerals occur in the considerable amount. 12Å-minerals have been identified as mica/vermiculite interlayer minerals showing the 25Å basal reflection. Their crystal sizes are relatively big showing more than 10 micron in diameter. Two types of 14Å-mineral, which are vermiculite/smectite interlayer mineral and A1-vermiculite, have been observed. Kaolin minerals consist of kaolinite, 10Å and 7Å halloysite. Kaolinite relatively dominates in the strongly weathered soil of the area. In contrast with kaolinite, 12Å-and 14Å-minerals such as vermiculite/smectite and mica/vermiculite interlayer minerals tend to occur in the weakly to intermediately weathered products, Based on their occurrences, it strongly suggests that they are intermediate products in the course of the weathering process from the parent materials into the kaolin mineral.

마쇄고추를 첨가한 김치의 이화학적 성분 변화 및 관능적 특성

황성연,박소희,강근옥,이현자,복진흥 한국식생활문화학회 2005 韓國食生活文化學會誌 Vol.20 No.2

We investigated the physico-chemical and sensory characteristics of Kimchi made with red pepper that was washed and mashed. The pH of juice from Kimchi made with red pepper powder was the highest on the day of Kimchi preparation. In the case of Kimchi made with mashed red pepper, the pH of juice and liquid was lower than that of other samples. A similar decrease in pH of juice and liquid was observed up to the second week of fermentation, but the significant difference between both samples wasn't found. The total acidity of Kimchi with mashed red pepper was significantly increased during early fermentation, but was similar during the second week, compared with that of Kimchi with red pepper powder. From the third week of storage, both juice and liquid from Kimchi made with red pepper powder was relatively increased. L and a value of liquid was highest in the case of Kimchi made with mashed red pepper, but b value was lowest during fermentation. In the case of organic acids. acetic acid and lactic acid contents were increased in Kimchi made with mashed red pepper while fermentation progressed. In addition, citric acid content was constant up to the second week in Kimchi made with mashed red pepper but from the third week wasn't detected in both Kimchi made with mashed red pepper and Kimchi made with red pepper powder. In the case of QDA(Quantitative Descriptive Analysis) profiles, the values of Kimchi made with mashed red pepper were significantly higher than those of Kimchi made with red pepper powder in respect to redness, pungency and fresh flavor immediately after the preparation of Kimchi and during the second week of fermentation, but during the fifth week the values were higher in respect to redness and fresh flavor of Kimchi. Appearance and overall acceptability was remarkably increased in Kimchi made with mashed red pepper, compared with that of Kimchi made with red pepper powder immediately after pickling, during the second and the fifth week of fermentation. Therefore, these results indicate that mashed red pepper increased more citric acid content, L and a value of Kimchi in comparison with red pepper powder, resulting in the good effects on overall acceptability due to the significant increase of redness and fresh flover.

경북 청송지역 도석광성에서 산출하는 점토광물

황진연 부산대학교 기초과학연구소 1990 부산대학교 기초과학연구소 연구논문집 Vol.10 No.-

The pottery stone diposits of the Cheongsong area consist of abundant quartz with clay minerals such as mica/smectite interstratified mineral,tosudite,kaolinite and sericite. The occurrence and mineralogical properties of the clay minerals were investigated by X-ray diffraction method,chemical analysis, DTA and IR. Tosudite occurs in the Beopsoo pottery stone deposit, it seem to be Li-beraing tosudite.Mica/smectite interstratified minerals with less than about 20% expandable layers are commonly observed in the pottery stne deposits of the area. The mica/smectite interstratified minerals tend to increase the expandable layers as the pogress of alteration. The pottery stones from this area seem to be altered from rhyolite or welded tuff by hydrothemal solution.