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.

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.

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.

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.

관여가 의복품목별 평가 기준에 미치는 영향

조은영(Eun Young Jo),홍병숙(Byung Sook Hong) 한국복식학회 1994 服飾 Vol.23 No.-

The purpose of this study is, by analyze the relationship among clothing involvement which is major expanatory variable in the stage of product purchase and consumption, evaluative criteria of housewives, to help to give understanding the concept of involvement and to supply the fundamental data for constructing marketing stratege. The subject of this study was a 510 housewives and the items of study were three such as suit·one piece dress, blouse·skirt, and blue jean·T-shirt. For analyzing data frequency analysis, percent, mean, standard deviation, factor analysis, F-test, Duncan-test, MANOVA, t-test, and Pearson`s product-moment correlation coefficient were used. The results are as follows. 1. Clothing involvement was divided into 4 dimensions such as fashion, pleasure, symbolism, and perceived risk. Evaluative criteria had 5 dimensions such as harmony, dignity, practicality, price, and fashion. 2. There was significant difference in the occupation of working housewives and the expenditure of money on clothes concerning clothing involvement. 3. There was significant difference in items concerning the degrees of importance of each evaluation factor. Harmony was the first important dimension and practicality was the second by housewives. the degree of clothing involvement had a significant positive correlation with the factors of evaluation on each item. Each dimemsion of clothing involvement had a significant positive correlation with the factors of evaluation.

생물여과공정(BAF)을 이용한 소규모 하수처리 시스템 평가

조은영 ( Eun Young Jo ),박승민 ( Seung Min Park ),박찬규 ( Chan Gyu Park ),김영희 ( Young Hee Kim ) 한국물환경학회(구 한국수질보전학회) 2014 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2014 No.-

胡椒와 Piperine에 의한 총체적 유전자 발현 비교

조은영(Eun Young Jo),정지천(Ji Cheon Jeong) 한의병리학회 2010 동의생리병리학회지 Vol.24 No.5

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.

멘디의 역사적 기원과 상징성에 대한 연구

조은영 ( Eun Young Jo ),유태순 ( Tai Soon Yoo ) 한국의류산업학회 2004 한국의류산업학회지 Vol.6 No.3

Mehndi, becoming a kind of body fashion in western advanced countries nowadays, is a exquisite, classical fashion form sublimated to traditional faith, medicine and designing art. As one of the cultural arts, especially transmitted by women, a individual tradition of the way how to do the mehndi and the design has been handed down from one culture to another over a thousand of years and it is extensively using in many area, all around world today. Mehndi was used as preparing for special events or celebrations in India, Africa, Central Asia in order to pray for happiness, good luck and calm hart 5000 years ago. Especially, it is concerned with romantic love or a wedding and takes important part of a traditional wedding reception and bride adorning in the culture of Hindu or Islam. In addition to adorning skin, mehndi has various symbols, meaning, function, that is, as a speechless language, in several cultures, it has common meaning such as attraction, protection, celebration. The design of mehndi has been in harmony with the figure, colors, skin types of the dress or the ornament. According to the region, religion, design, mehndi is divided into the design of India and Morocco mostly. Indian design mainly shows flowers and paisley pattern, people widely recognize this design to celebrate and adorn bride in wedding ceremony, still apply mehndi the present time. Moroccan mehndi design, representing North Africa, characterized a bold geometrical figure which stands for belief in living under the protection from supernatural power Through the understanding of these various meaning, function, symbolism of the design, adorning their body, the current general public use mehndi as not only aesthetic means but also another self expression.

외식산업의 물류서비스품질이 관계품질 및 고객충성도에 미치는 영향에 관한 연구

조은영(Jo, Eun Young),민하나(Min, Ha Na) 한국서비스경영학회 2009 서비스경영학회지 Vol.10 No.4