유근피(楡根皮) 추출물의 활성종 억제 및 염증 촉진 인자 제어 효과

조은영,정지천,Jo, Eun-Young,Jeong, Ji-Cheon 대한한방내과학회 2008 大韓韓方內科學會誌 Vol.29 No.2

Objectives : This study was to investigate the inhibitory effects of Ulmus davidiana on the generation of peroxynitrite $(ONOO^{-})$, nitric oxide (NO) and superoxide anion radicals $(O_{2}^{-})$ in the endothelial cells of rat vessels. The effects of Ulmus davidiana on the expression of inflammation-related proteins, $NF-{\kappa}B$ (p50, p65), COX-2, and iNOS, were examined by western blotting. Methods : For this study, fluorescent probes, namely dihydrorhodamine 123 (DHR 123), 4,5-diaminofluorescein (DAF-2) and 2',7'-dichlorodihydrofluorescein diacetate (DCFDA) were used. Western blotting was performed via using anti-$NF-{\kappa}B$ (p50, p65), anti-COX-2, and anti-iNOS, respectively. Results : Ulmus davidiana inhibited the generation of $ONOO^{-}$, NO and $(O_{2}^{-})$ in the lipopolysaccharide (LPS)-treated endothelial cells of rat vessels in vitro. Ulmus davidiana inhibited the expression of COX-2 and iNOS genes by means of decreasing the $NF-{\kappa}B$ activation. Conclusions : These results suggest Ulmus davidiana is effective on inhibiting the generation of $ONOO^{-}$, NO and $O_{2}^{-}$, and that therefore it might have a potential role as a treatment for the inflammatory process and inflammation-related diseases.

Ferrate(VI)를 이용한 발전소 탈황폐수 처리에 관한 연구

조은영,박찬규,Jo, Eun-young,Park, Chan-gyu 대한상하수도학회 2017 상하수도학회지 Vol.31 No.4

Wastewater treatment using ferrate (VI) solution is becoming a promising technology for several years, because it is high efficient and harmless technology. In this study, the ferrate (VI) solution was tested to treatment of desulfurization wastewater. The effluent from desulfurization wastewater treatment process of power plant was used as raw water, and the COD and T-N removal efficiency of ferrate(VI) solution were investigated. In the test, as the injection rate increased from 0.1 to 1.0%, the removal efficiency of COD also slightly increased, about 80% of COD were removed in 1.0% of injection rate. In the case of T-N, about 50% of T-N was removed in the condition of 1.0% of injection rate. The removal efficiency of COD and T-N also affected by reaction time, maximum removal efficiency was shown in 30 min of treatment. From these results, the wastewater treatment with ferrate(VI) solution can be great solutions for treatment of non-biodegradable pollutants in wastewater, especially for the 3rd treatment of wastewater.

원자력 선진국들은 이렇게 방폐장 운영한다

조은영,Jo, Eun-Yeong 한국원자력산업회의 2005 원자력산업 Vol.25 No.12

근광장 측정에서 방사선 사진술의 정확도

조은영,박창서,Jo Eun-Young,Park Chang-Seo 대한영상치의학회 1998 Imaging Science in Dentistry Vol.28 No.2

For the successful endodontic treatment, root canal should be cleaned thoroughly by accurate mechanical and chemical canal preparation and sealed completely with canal filling material without damaging the periapical tissues. The accuracy of the root canal length measurement is a prerequisite for the success of the endodontic treatment, and the root canal length is often determined by the standard periapical radiographs and digital tactile sense. In this study, the accuracy and the clinical usefulness of Digora/sup (R)/, an intraoral digital imaging processor and the conventional standard radiographs were compared by measuring the length from the top of the file to the root apex. 30 single rooted premolars were invested in a uniformly sized blocks and No.25 K-file was inserted into and fixed in each canal. Each block was placed in equal distance and position to satisfy the principle of the bisecting angle and paralleling techniques and Digora/sup (R)/ system's image and standard periapical radiographs were taken. Each radiograph was examined by 3 different observers by measuring the length from top of the file to the root apex and each data was compared and analyzed. The results were as follows; 1. In the bisecting angle technique, the average difference between the Digora/sup (R)/ system and standard periapical radiograph was 0.002 mm and the standard deviation was 0.341 mm which showed no statistically significant difference between the two systems(p>0.05). Also, in the paralleling technique, the average difference between these two system was 0.007 mm and the standard deviation was 0.323 mm which showed no statistically significant difference between the two systems(p>0.05). 2. In Digora/sup (R)/ system, the average difference between the bisecting angle and paralleling technique was -0.336 mm and the standard deviation was 0.472 mm which showed a statistically significant difference between the two techniques(p<0.05). Also, in the standard periapical radiographs, the average difference between the bisecting angle and paralleling technique was 0.328 mm and the standard deviation was 0.517 mm which showed a statistically significant difference between these two techniques(p<0.05). 3. In Digora/sup (R)/ system and the standard periapical radiographs. there was a statistically significant difference between the measurement using the bisecting angle technique and the actual length(p<0.05), But there was no statistically significant difference between the measurement using the paralleling technique and the actuallength(p>0.05). In conclusion. the determination of the root canal length by using the Digora/sup (R)/ system can give us as good an image as the standard periapical radiograph and using the paralleling technique instead of the bisecting angle technique can give a measurement closer to the actual canal length. thereby contributing to a successful result. Also. considering the advantages of the digital imaging processor such as decreasing the amount of exposure to the patient. immediate use of the image. magnification of image size. control of the contrast and brightness and the ability of storing the image can give us good reason to replace the standard periapical radiographs.

악골에 발생한 백악질 및 골화성섬유종의 임상 및 방사선학적 고찰

조은영,김기덕,박창서,Jo Eun-Young,Kim Kee-Deog,Park Chang-Seo 대한영상치의학회 1997 Imaging Science in Dentistry Vol.27 No.2

The purpose of this study was to know the proper diagnosis and to establish the treatment plan of cementifying and ossifying fibroma in the jaws through the clinical, raiological, and histopathologic considerations. The authors compared and analyzed the c1inicoradiologic features of the thirteen cases of cementifying and ossifying fibroma, diagnosed at the Dental college hospital in Yonsei university, Seoul, Korea, during the period from 1980 to 1995. The obtained results were as follows : 1. Cementifying and ossifying fibroma occured in the mean age, 44 years, ranged from 29 to 65 years and the male to female ratio was approximately 1:5. 2. Swelling was the most common frequent presenting complaints. Other reported symptoms included pain, tooth mobility and asymptom. 3. The frequency of the lesions was twelve cases in the mandible and one case in the maxilla. And eleven of thirteen cases were distributed on the premolar and molar region. 4. Radiologically, eight of thirteen cases were well defined lesions, five cases were relatively well defined lesions. And nine of thirteen cases were mixed lesions, three cases were radiopaque lesions, and only one case was purely radiolucenct lesion. 5. Histologically, seven of thirteen cases were classified ossifying fibroma, four cases were cemento-ossifying fibroma, and two cases were cementifying fibroma.

관계형DNMS의 CAD응용에 관한 고찰

조은영,김준,장덕호,곽명신,유영욱,Jo, Eun-Yeong,Kim, Jun,Jang, Deok-Ho,Gwak, Myeong-Sin,Yu, Yeong-Uk 한국전자통신연구원 1986 전자통신 Vol.8 No.3

CAD 시스팀의 설계 도구 및 설계 데이터가 복잡하고 방대해 짐에 따라 DBMS를 통한 통합적이고 효율적인 데이터베이스 관리의 필요성이 대두하게 되었다. 본고에서는 주로 VLSI설계를 위한 CAD DBMS의 필용성과 이점, CAD특성에 따른 요구 조건을 살펴보고, 관계형 모델의 특성과 이 모델을 CAD 응용에 이용하기 위한 확장 기법에 관하여 논의하였다. 이러한 확장 기법은 설계 데이터의 계층적 특성을 반영한 질의어 생성, 공간적 탐색을 위한 데이터 구조, nested relation의 허용 등이며, 복잡한 오브젝트 특성을 제공하기 위해, 사용자가 원하는 데이터 유형이나 오퍼레이션을 지정할 수 있게 하는 기법도 포함된다. 끝으로 실제적으로 관계형 모델에 기초한 CAD DBMS의 연구, 개발 사례를 기술하였다.

대학생의 긍정정서 및 부정정서가 심리적 안녕감에 미치는 영향

조은영(Jo, Eunyoung),임정하(Lim, Jungha) 한국청소년정책연구원 2014 한국청소년연구 Vol.25 No.4

본 연구는 대학생의 긍정정서 및 부정정서와 심리적 안녕감의 관계에서 인지적 유연성의 매개효과 를 살펴보기 위하여 수행되었다. 서울, 경기 지역에 소재한 4년제 대학교의 재학생 338명을 대상으로 하였다. 질문지법을 이용하여 자료를 수집하였으며, 수집된 자료를 이용해 평균, 표준편차, t 검증, 상관분석, 회귀분석을 실시하였다. 주요 연구결과는 다음과 같다. 첫째, 대학생의 긍정정서 및 부정정서와 심리적 안녕감은 성별에 따른 차이가 유의하지 않은 것으로 나타났다. 반면, 대학생의 인지적 유연성은 성별에 따른 차이가 유의한 것으로 나타났으며, 남학생 집단이 여학생 집단보다 인지적 유연성이 높았다. 둘째, 대학생의 긍정정서 및 부정정서는 심리적 안녕감에 직접적인 영향을 미칠 뿐만 아니라, 인지적 유연성을 매개로 하여 대학생의 심리적 안녕감에 간접적으로도 영향을 미치는 것으로 나타났다. 즉, 긍정정서는 변화하는 환경에 따라 인지의 틀을 적응적으로 전환하는데 도움이 되고, 이는 심리적 안녕감을 높이는데 중요한 역할을 하는 것으로 나타났다. 한편, 부정정서는 변화하는 환경에 따라 인지의 틀을 유연하게 전환하는데 방해가 되고, 궁극적으로 심리적 안녕감 수준을 낮추는 역할을 하였다. 본 연구에서 살펴본 대학생의 심리적 안녕감에 미치는 긍정정서 및 부정정서와 인지적 유연성의 영향력은 대학생의 안녕감 증진을 위한 지원 프로그램에 기초자료로 활용되며, 나아가 대학생을 위한 정책과 프로그램 개발에 유용한 자료로 활용될 수 있을 것으로 기대된다. The purpose of this study was to investigate the relationship between the emotions and psychological well-being of college students, as they are mediated by cognitive flexibility. The participants comprised 338 college students recruited from 5 colleges in Seoul and Gyeonggi-do. Data were analyzed using Cronbach’s α, factor analyses, frequencies, percentiles, means, standard deviations, t-tests, Pearson’s correlations and regression analyses. The major findings were as follow: First, male students reported greater levels of cognitive flexibility than female students did. Second, positive and negative emotions had an influence upon the psychological well-being of college students both directly and indirectly via cognitive flexibility.

전기산화를 이용한 비스페놀A 제거에 관한 연구

조은영 ( Eun-young Jo ),박승민 ( Seung-min Park ),이주열 ( Ju-yeol Lee ),박찬규 ( Chan-gyu Park ) 한국물환경학회(구 한국수질보전학회) 2015 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2015 No.-

자철광 분말을 이용한 하수처리시스템의 질소, 인 제거효율에 관한 연구

조은영(Eun-young Jo),박승민(Seung-Min Park),여인설(In-seol Yeo),김종철(Jong-cheol Kim),김양섭(Yang-seob Kim),박찬규(Chan-gyu Park) 한국유체기계학회 2014 유체기계 연구개발 발표회 논문집 Vol.2014 No.11

2단 전기화학적 하수처리시스템을 이용한 유기물 제거

조은영 ( Eun Young Jo ),박승민 ( Seung Min Park ),차재두 ( Jae Doo Cha ),박찬규 ( Chan Gyu Park ),이주열 ( Joo Yeol Lee ) 한국수처리학회 2014 한국수처리학회지 Vol.22 No.1

The electrochemical treatment is considered as one of the advanced oxidation processes, potentially a powerful method of pollution control, offering high removal efficiencies in compact reactors with simple equipments for control and operation of the process. The treatment process would be relatively non-specific, that is, applicable to a variety of contaminants but capable of preventing the production of unwanted side-products. In recent years there has been a growing interest in the treatment of industrial effluents by electrochemical methods as an alternative to traditional biological treatments. In this study, 2-step electrochemical treatment system which is made up electrochemical coagulation, electrochemical oxidation was developed for treatment of wastewater. Objectives of this study are develop lab-scale wastewater treatment system using electrochemical technology and evaluate organic pollutants removal efficiency. In the lab-scale test, 95% of SS was removed and removal efficiency of COD, TOC was above 90%, also. It means the 2-stage electrochemical system is effective on removal of organic pollutants, especially suspended solids.