피혁슬러지 고형화시 시멘트 혼화제의 영향

주소영,박상찬,전태성,손종렬,김태영 대한위생학회 2003 대한환경위생공학회지 Vol.18 No.4

The cement-based system among S/S(Solidification/Stabilization) is widely used to treat hazardous wastes. In this study, tannery sludge was solidified to evaluate the stabilization effects of using admixtures in the cement-based S/S. Fly ash as substitute also used to increase the strength of the S/S of hazardous waste. The compressive strength measurement and leaching experiment of chromium metal of solidified mortar were carried out to compare and evaluate the physical and chemical characteristics of solidified hazardous waste sludge. From the result of this study, there was increased of compressive strength by using AEW-3(early-hardening AE water reducing agent), and leaching concentration of chromium became low enough to satisfy the regulatory criteria. The successful solidification for the organic contaminant and heavy metal in hazardous waste should enable to treat by cement-based system using early-hardening AE water reducing admixture and fly ash as substituted cement.

경직성 뇌성마비 환아에서 선택적 후근 절제술 후 운동기능의 변화

이소영,최인성,한재영,정주찬,위정선,오명신,박승진,이삼규,김재휴 全南大醫大 2001 전남의대학술지 Vol.37 No.1

마이크로그로브 형태에 따른 평활근 세포 운동 측정

유소영,박찬영,정석,김동익,이병붕,허세호,한동철,장준근 대한혈관외과학회 2002 Vascular Specialist International Vol.18 No.2

Purpose: The spreading, orientation, and chemotaxis the gradient of a chemoattractant of smooth muscle cells (SMCs) were studied on the micro-grooved substrata by the light, fluorescence and scanning electron microscopy. Method: Vertical-walled grooves were produced in silicon wafers by the micromachining technique. All grooves were 4~20㎛ deep and 10~80㎛ wide, SMCs were cultured on each microgroove and examined under stereo-microscope. Result: Cell clusters were markedly oriented by all the grooved substrata examined. Tim-lapse images acquired from CCD (Charge Coupled Device) showed that the grooves directed the migration of SMCs. There was no prominent difference in the migration speed of SMCs according to the grooves. All the cytoskeletal fibers were reoragnized in the same direction with grooves. Especially the alignments of microtubule and intermediate filaments were distinguished in the SMCs on the micro grooves. Conclusion: These results could be applied to the analysis of vascular restenosis and the development of artificial blood vessels.

수종의 근관세척액과 Listerine의 항균성 비교 연구

김영훈,강민경,최은경,양소영,양인석,강인철,황윤찬,황인남,오원만 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.6

본 연구는 여러 가지 근관세척액(NaOCl, CHX, EDTA)과 구강세정제로 사용되는 Listerine을 근관감염균주인 Porphyromonas gingivalis와 Enterococcus faecalis를 상대로 항균효과를 비교하고 Listerine이 근관세척액으로 사용가능한지를 확인하고자 시행하였다. 본 연구에서는 Porphyromonas gingivalis ATCC 3327과 Enterococcus faecalis ATCC 29212의 표준균주를 사용하였다. 실험을 위한 근관세척제로 0.1%, 0.2%, 1%, 2% Chlorhexidine(CHX)과 0.5%, 1%, 2.5%, 5.25% NaOCl, 0.5M EDTA(18.6% EDTA). 그리고 Listerine원액을 이용하였다. 항균효과의 비교는 액체배지상에서 균주의 혼탁도와 한천 확산법을 이용한 억제대 비교로 하였다. 모든 실험군은 대조군과 비교시 근관내 균주에 항균성을 나타냈다(p < 0.001). 모든 농도의 NaOCl, CHX, 그리고 EDTA는 실험균주에서 높은 항균성을 보였다. 모든 실험에서 Listerine은 다른 근관세척제에 비해 낮은 항균성을 보였다. 결론적으로, Listerine이 E. faecalis와 P. gingivalis에 대해 항균성을 보이나, 일반적으로 사용되는 근관세척 액에 비해서는 현저히 낮은 항균성을 나타냄으로 근관세척 액으로 사용은 적합하지 않음을 나타냈다. The purpose of this study is to compare the antibacterial effect of Listerine on two microorganisms (P. gingivalis and E. faecalis) with various root canal irrigants (NaOCl, CHX, EDTA) and to identify possibility of using Listerine as a root canal irrigant. Porphyromonas gingivalis ATCC 3327 and Enterococcus faecalis ATCC 29212 were used in this experiment. For the test irrigants, 0.5%, 1%, 2.5%, 5.25% NaOCl, 0.1%, 0.2%, 1%, 2% CHX, 0.5M EDTA (18.6% EDTA) and Listerine were prepared. Distiled water was used as control. Two methods-1) Comparison of turbidity in broth and 2) Agar diffusion test-were used to determine the extent of antibacterial effect of Listerine and to compare it with that of NaOCl, CHX, and EDTA. All solutions tested were effective against two bacterial strains compared with control (p < 0.001). Any concentration of NaOCl, CHX, and EDTA showed similarly high effectiveness against all bacterial strains. In all experiment, Listerine showed significantly low antibacterial effect compared with the other root canal irrigants (p < 0.05). In conclusion, the results reflect remarkably low antibacterial effect of Listerine as compared with root canal irrigants in general so it is not suitable for the root canal irrigant.

홍보관 전시구성에 관한 연구 : 주요 도시 홍보관을 중심으로 The point of the public relations pavilions of the essential corporate cities

이소영,박찬호 동덕여자대학교 디자인연구소 2004 디자인포럼21 Vol.7 No.-

지방 자치제 실시는 지방단체들의 행정영역 확대와 함께 지역문제에 관련한 정책결정기능이 추가되고 지역주민의 의사가 폭넓게 적용됨으로써 행정영역의 변화를 가속화시키고 있다. 이러한 시점에서 교육과 소득수준, 시대적인 가치관, 사회조류, 기술의 발전 등은 지역주민의 욕구를 다원화시켰고 과거에는 경제적인 욕구에 집중되었던 욕구들이 이제는 점차 문화적인 욕구로 변화 하고 있다. 이러한 사회적 욕구는 각종 지역예술문화행사와 함께 복합문화공간인 전시관의 활성화를 가져왔고, 특히 자치행정을 홍보하고 지역경쟁력을 갖추고자하는 노력의 일환으로 시립홍보관에 대한 필요성이 대두되고 있다. 이러한 필요성에도 불구하고 아직 시립홍보관 설립은 초기단계여서 1차원적이며 형식적인 보여주기 전시에 지나지 않고 있어 시민 참여도가 저조한 실정이다 따라서 본 연구는 지역시민들에게 소외당하고 있는 시립홍보관의 전시구성상의 문제점들을 살펴보고, 전시기술과 디자인을 분석하여 다음과 같은 결론에 이르렀다. 첫째, 장소성, 기념성, 자연적 환경요소가 고려되고 시민들과 관광객의 이용이 용이한 곳에 전시공간을 확보해야한다. 둘째, 市의 정치 · 경제 · 문화적 특성과 시정 방향이 고려되고, 무엇보다도 주이용객인 시민의 특성과 NEED가 반영된 전시 커뮤니케이션 컨텐츠의 구성이 필요하다. 셋째, 시민의 의식수준 향상과 지자체로 인한 시정의 시민참여 비중이 커지고 있으므로 전시 공간 구성에 있어도 지역행정의 홍보와 시민참여 공간의 면적비를 높게 두어야한다. 넷째, 시청 내의 좁은 면적을 활용한 전시 공간일 경우에는 디지털 영상 매체의 사용을 활성화하여 공간적 제악을 해소하고 다양한 정보를 제공함으로서 관객과의 쌍방향 커뮤니케이션이 가능한 체험전시로의 전환이 필요하다. 다섯째, 인테리어에 있어서 딱딱한 관공서이미지보다는 열린공간의 이미지를 주어 일반시민이 쉽게 이용할 수 있도록 해야 한다. 여섯째, 지역문화 홍보의 장으로서 관광객을 위한 안내시스템과 관광 정보시스템을 보유해야하며 마감재나 Color의 사용, 그래픽, 싸인, 영상 등에 지역적 특성이 반영된 아이덴티티를 고려하여 디자인해야 한다. 일곱째, 급속한 사회의 변화에 발마추어 컨텐츠의 내용이나 시설부분 등을 지속적으로 관리하고 보안하여 상설전시관으로서의 한계점을 극복하여 항상 열린 공간으로서의 첨단화된 전시관으로 발전할 수 있도록 한다. 이러한 요건이 충족될 때, 향후 설계될 시립홍보관은 기존의 방식에서 벗어나 시민참여 중심의 다양한 전문기술이 복합된 참여형, 첨단형 홍보관이 계획되어질 수 있을 것이다. The provincial self-governments have been changed rapidly their administration areas, because their districts have been expended and the abilities of the policy decisions about the local issues have been appended, additionally the inhabitants' estimations have applied extensively by the system of self-government since 1995. At this point of time, an education, an income level, values, the current of the times, the development of the technologies, and etc. have made the inhabitant's aspirations pluralistically and it have been shifting from the economical desire to the cultural desire. In consequence, there are requirements to transfer the cultural administrations from the improvement administrations. As this social needs produce various local cultural events and activations of pavilions, which are compoundcultural space. Especially, it really needs the municipal public relation pavilion, because government would like to announce the self governing administration and preparing the local competitiveness. Although it is needed, the foundation of the municipal public relation pavilions is the primary stage. It the first dimensional space and it is just exhibits for showing, thus the citizens' participation is the inanimate state. For this reason, this study is made a study of those requisites for display organisation of the municipal public relation pavilions, thus it would be solved a problem of the existing pavilions and it would be indicated the citizens participative exhibition spaces. Firstly, it should be ensured place of being conveniently locatedfor people and being considered the factors of locational, memorial and naturalenvironment for the pavilions. Secondly, it should be thought politics, economics and culture traits of self government and civic aim. Above all, it is necessary the exhibition communicational contents which are affected people's character and needs. Thirdly, because of increase of the citizens' sense and taking part in the local government, the formation of the exhibition area should be enlarged the area rate for the public relation of the local administration and the citizens' participation. Fourthly, if the exhibition spaces are utilised small areas of municipal building, it should be utilised digital displayer, because it will be able to solve the spatial limitation and to provide various pieced of information. And it should be positively used multimedia display system rather than simple and flat media. It helps to change to the experiential interactive communication. Fifthly, the interior of the pavilions are shown open space image than strained municipal office for the citizens, who can use it more comfortable. Sixthly, it should be have information for the tourists, thus it should be designed the identity which is applied local traits for the finish, using colour graphic, sign display, and Etc. Finally, when it should be overcome the permanent pavilions weakness by continual management, it can progress to the candid lasted pavilions The post paining municipal public relation pavilions will be participative and intelligent pavilions which are fixed various expert technology with the citizens' participation based, when above requirements are satisfied.

중증 흡연자들의 금연 성공과 관련된 흡연행태와 심리상태

곽찬용(Chan-Yong Kwak),박종혁(Jong-Hyock Park),김소영(So Young Kim),이상익(Sang Ick Lee),신철진(Chul-Jin Shin),손정우(Jung-Woo Son),주가원(Gawon Ju),김시경(Siekyeong Kim) 한국중독정신의학회 2018 중독정신의학 Vol.22 No.2

Objectives : The purpose of this study was to determine the factors affecting smoking cessation rate of heavy smokers. Methods : Typically, 81 participants enrolled in the smoking cessation camp at Chungbuk National University Hospital from April 2016 to November 2016 were included in the present study. The psychological factors related to group classification and the factors related to the success of smoking cessation were analyzed. Results : After 24 weeks of leaving the camp, 57 out of 81 participants successfully quit smoking and 24 failed in doing so. In the successful group, depression scale, stress scale, and various smoking-related factors exhibited intercorrelation and in the failure group, no significant correlation was observed. However, a comparison of correlation coefficients showed no significant difference. In addition, smoking cessation success rate was low when exhaled CO concentration was high at the time of admission when the smoking initiation age was juvenile, and when the smoking type was A (stimulus seeking type). Conclusion : Exhaled CO concentration at the time of admission, smoking initiation age, and smoking type A (stimulus seeking type) were associated with smoking cessation success.

Glass Ionomer Root Canal Sealer의 치근단 미세누출에 관한 연구

이소영,홍찬의 大韓齒科保存學會 1998 Restorative Dentistry & Endodontics Vol.23 No.1

The purpose of this study was to compare the degree of micro- leakage of new glass ionomer root canal sealer, Ketac-Endo(ESPE Co., Seefeld, Germany) with that of AH-26(De Trey Co., Ltd., U.S.A.). Root canal treatment using K-file, H-file, Gate Glidden drill was conducted on 49 extracted single-rooted teeth. 45 teeth were randomly divided into 3 experimental groups(15teeth per group) and 4 teeth were used as the control group. Group 1 was used AH-26 sealer with the lateral condensation method for canal filling, group 2 was used Ketac-Endo with the single cone method and group 3 was used Ketac-Endo with the lateral condensation method. The control group was obturated with the single cone method without sealer. The teeth were covered with two coats of nail varnish after 48 hours of obturation. The teeth were immersed in India ink for 1 week and cleaned with methyl salicylate and then the degree of dye penetration were measured with stereomicroscope. The data were analyzed statistically by one-way ANOVA. The results were as fellows : 1. 7 teeth in group 1, 5 in group 2, and 3 in group 3, were showed evidence of microleakage implying appropriate canal filling. 2. The mean average of microleakage was 0.17±0.32 mm in group 1, 0.30±0.37 mm in group 2, 0.10±0.21 mm in group 3, showing that canal filling using the lateral condensation canal filling method with Ketac-Endo showed the least microleakage and using the single cone method with Ketac-Endo showed the largest amount of microleakage. 3. There were no statistically significant difference in the variation of microleakage among groups. From the results above, Ketac-Endo which has the advantage of glass ionomer, whether using the single cone method or the lateral condensation method, showed similar results as AH-26, but for clinical application it is thought that were studies on the properties of Ketac-Endo should be followed.

아미노 말단 영역 돌연변이 루마진 단백질들의 제조, 정제 및 특성 비교

김소영,최지선,우영은,이찬용 충남대학교 생물공학연구소 2009 생물공학연구지 Vol.15 No.-

The lux regulon from Photobecterium leiognathi contains the genes for bacterial bioluminescence reaction as well as the lumazine protein (lumP) and for riboflavin synthase (ribE) that are transcribed opposite direction. The fluorescent protein of lumazine protein is a riboflavin synthase superfamily and shows considerable amino acid identity with the enzyme. To characterize the amino acid in binding site of N-terminal domain of lumazine protein, the mutant proteins containing 6X-His tag system were constructed and purified. The mutated N-terminal domain of lumazine proteins containing one Trp amino acid at the different position show peculiar maximum wavelength peak in fluorescence emission.

Fe-(4~8wt%)Si 압분체의 소결성에 관한 연구

이동희,소찬영 연세대학교 산업기술연구소 1980 논문집 Vol.12 No.2

本 硏究는 高逵素鋼材料인 Fe-Si混合壓粉體의 燒結現象에 관한 基礎硏究로서, 純 鐵粉에 융점이 낮은 Fe-Si合金粉을 혼합한 경우와 純Si粉을 혼합한 경우의 燒結擧動을 조사하고, 燒結方法에 의한 磁氣的 機械的 性質의 변화 양상을 定性的으로 고찰하였다. 硏究方法은 純 鐵粉에 Fe-Si合金粉 및 純 Si粉을 高硅素鋼의 組成範圍인 4%Si에서 8%Si까지의 여러 조성으로 혼합하여 6ton/㎠ 의 압력으로 成形한 후, 수소 분위기 중에서 燒結溫度(1100 ℃-1350℃)와 燒結時間(5分-240分)을 변화시켜 燒結을 행하였으며, 각각의 燒結擧動은 燒結體의 氣孔度, densification para meter, 微細組織을 토대로 검토하였다. 本 硏究結果에 의하면 Fe-Si合金粉을 液相으로 발생시킨 경우가 純粹 固相에 의한 것 보다 燒結이 다소 促進되었으나, 모두 短時間內(30分 이내)에만 效果가 있었다. 그 이유는 液相量이 너무 적고 또, 短時間內에 소멸되어 液相燒結現象의 지속이 오래가지 않았다는 것과, 급격한 結晶粒의 성장 등으로 燒結이 크게 促進되지 못하였다고 分析되며, Fe-Si合金粉의 混合壓粉體를 固相燒結할 경우 1시간 이상 長時間에서 Kirkendall效果에 의해 氣孔度가 다시 증가하는 경향을 보였으며 전체적으로 燒結이 沮害됨을 알 수 있었다. 또한 燒結에 따른 緻密化는 1200℃ 이하 固相燒結에서 純 Si粉의 混合壓粉體 보다 Fe-Si合金粉의 混合壓粉體가 양호한 것으로 나타난 반면, 1250℃ 이상에서는 純 Si粉의 混合壓粉體가 보다 더 緻密化 되었다. 機械的 性質(硬度)은 Si의 組成이 높을수록 증가되었으며, 磁氣的 性質은 예상과는 달리 Si의 組成이 낮은 경우가 양호한 것으로 나타났다. SINTERING OF Fe-(4∼8wt%) Si POWER COMPACTS. The sintering behaviour and the varation of related properties for Fe-Si powder compacts containing various composition of Si from 4%, to 8% have been investigated with mixture of pure iron and pure silicon powders,and mixture of pure iron and Fe-75% Si alloy powders The results obtained in these experiments can be summarized as follows. (1) The enhanced densification for the compacts sintered at high temperatures above 1250℃, where liquid phase of Fe-Si alloy powder begins to occur, was not so high as what could be expected from the conventional liquid phase sintering concepts. The reasons for this can be attributed to the little amount of the liquid phase and its rapid disappearance in compacts during sintering, and the fast grain growth due to the high sintering temperatures. (2) Under the sintering condition of solid state only, the compacts of Fe-Si alloy powder mixtures showed that the densification rate decreased slowly due to the Kirkendall effect for long sintering time over 1 hour. (3) Sintering of the compacts prepared from pure iorn and Fe-Si alloy powder mixture showed an improved densification as compared to that of pure iron/pure Si power mixed compacts under the temperature of 1200℃, but above 1250℃ an opposite result was observed. (4) Magnetic susceptibility of the sintered compacts containing lower Si contents(4.5%) was higher than those of higher Si compacts. This fact is not consistent with the expectation, but it may be attributed to the observed high values of porosity for 6.5% and 7.5% Si compacts in these experiements. Hardness values, however, increased with Si content.

pH순환 모델에서 과포화 용액의 초기 우식 법랑질에 대한 재광화 효과

홍석진,김소라,이찬영,노병덕,금기연 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.4

Dental caries is the most common oral disease. There are many factors contributing to its development. but complete understanding and prevention are not fully know. However, it is possible to remineralize the early enamel carious lesion by fluoride containing remineralization solution. Recently the pH-cycling model has been used to examine the effect of fluoride solution on remineralization of artificial caries in vitro as it can closely simulate the conditions encountered in vivo within a carefully controlled enviroment.