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치주조직재생유도술용 비흡수성 차폐막 (e-PTFE membrane)에의 세균부착 및 침투
정현주,이성미,이호재,김옥수,Chung, Hyun-Ju,Lee, Sung-Mi,Lee, Ho-Jae,Kim, Ok-Soo 대한치주과학회 1996 Journal of Periodontal & Implant Science Vol.26 No.1
This study was performed to observe the bacterial adhesion and penetration to e-PTFE membrane following guided tissue regeneration(GTR) procedure and to evaluate the association of the membrane exposure and bacterial contamination with the clinical outcome. For the study, ten infrabony defects in 9 patient were treated by mucoperiosteal flap operation including placement of the e-PTFE membrane. The treated teeth were monitored weekly for the membrane exposure, gingival recession and gingival inflammation. The membranes were retrieved after 4 to 6 weeks, examined by SEM for bacterial contamination and adherent connective tisue elements, and observed under LM for the bacterial penetration into membrane. Three months postsurgery, the defect sites were clinically reexamined for the changes in attachment level and probing depth. Comparison of the ultrastuctural findings and clinical outcome revealed that extent of membrane exposure and bacterial contamination of the membrane was inversely associated with clinical attachment gain. From this finding, the extent of membrane exposure and the bacterial contamination on the apical portion of the e-PTFE membrane at the time of removal seemed to be a critical determinant on the clinical outcome of GTR and the membrane exposure needs to be controlled for optimal results.
정현주,Chung, Hyun-Ju 대한치주과학회 1996 Journal of Periodontal & Implant Science Vol.26 No.1
There were many reports that elevations in the levels of active and latent collagenase in gingival crevicular fluid(GCF) have been correlated positively with periodontal disease activity. To provide a simple diagnostic approach for testing GCF collagenolytic activity, the detection limit of enzyme activity was compared using radiofibril assay(Sodek et.al.1981) and spectrophotometric collagenolytic assay(Nethery et al. 1986). The detection limits of both assay for standard bacterial enzyme were similar and the radiofibril assay showed a little (1/2) lower detection limit for tad pole collagenase. To evaluate the relationship between periodontal tissue destruction and the collagenolytic activity, GCF was collected, and latent and active enzyme activities were measured by a spectrophotometric collagenolytic assay. Twelve subjects showing progressive lesions were selected according to the presence of immediate tissue destruction, frequent abscess formation, and increasing need for tooth extraction, and the absence of underlying systemic disease and previous antibiotic medication history within 6 months. Comparisons were made between sites with either: 1) inflammation with a previous history of progressive loss of periodontal tissue and bone support(2l progressive sites): 2) previous history of bone loss and periodontal destruction but now clinically stable(12 comparably stable sites); or 3) no loss of periodontal tissue and bone support(11 control sites including 5 gingivitis sites and 6 healthy sites). Active collagenase activity was the highest in the progressive sites and decreased in the order of the gingivitis sites, the stable sites, and the healthy sites. The total enzyme activity was $2{\sim}3$ fold higher in the progressive sites and the gingivitis sites, compared to the stable and the healthy sites. The ratio of active to total collagenolytic activity was twice in the progressive sites. Analysis of active collagenase level(5mU) and the ratio of active to total collagenolytic activity(0.8) as a diagnositic test indicates that these measurements have the sensitivity of 0.81 and 0.86, the specificity of 0.70 and 0.65, and the overall agreement of 0.75 and 0.73, respectively. Thus, this method has significant merits as a diagnostic tool to determine wherher the site is in a state of remission or progression.
양육 스트레스와 가족의사소통이 발달장애아동 어머니의 장애수용에 미치는 영향 연구 : 사회적 지지의 조절효과 검증
정현주,김성수 한국장애인재활협회 2013 재활복지 Vol.17 No.2
본 연구는 양육 스트레스(경제적 스트레스, 심리·정서적 스트레스, 교육적 스트레스)와 가족의사소통이 발달장애아동 어머니의 장애수용에 미치는 영향에 대해서 알아보기 위해서 이루어졌다. 수집된 자료는 SPSS 12.0과 확인적 요인분석과 구조방정식 모형분석을 위하여 Amos 7.0을 사용하였다. 추정방법으로는 완전정보 최대우도법(Full Information Maximum Likelihood)을 사용하였다. 분석결과 경제적 스트레스와 교육적 스트레스, 가족의사소통이 어머니의 장애수용에 이르는 경로계수가 통계적으로 유의미하였다. 또한 경제적 스트레스와 교육적 스트레스가 가족의사소통에 이르는 경로계수도 통계적으로 유의미하였다. 그리고 경제적 스트레스 및 교육적 스트레스와 발달장애아동 어머니의 장애수용 사이에서 사회적 지지의 조절효과가 확인되었다. 마지막으로 연구의 의의, 제한점 및 후속연구를 위한 제언을 제시하였다. This study aims to research the influence that Parenting Stress(economical stress, psychological & emotional stress, Educational Stress) and Family Communication have on Disability Acceptance of Developmental Disability Children's Mothers. Statistical analysis was performed according to SPSS 12.0 and AMOS 7.0 for factor analysis and Structural Equation Modeling(SEM). According to results, it was found that Economic Stress, Educational Stress, and Family Communication have meaningful statistical differences in the degree of Disability Acceptance. Economic and Educational Stress have meaningful statistical differences in the degree of Family Communication. Also Family Communication has meaningful statistical difference in the degree of Disability Acceptance. And the moderation effect of Social Support between Economic and Educational Stress and Disability Acceptance have been analyzed. Finally, the significance of this study, its limitation and further research was discussed.
인지도구(Mindtool)의 기능에 대한 이해 : 미술활동을 중심으로
정현주,박혜정 경주대학교 정보전자기술연구소 2002 情報電子技術論叢 Vol.1 No.-
The current research aims to provide a theoretical framework of information technology (IT) as a cognitive tool. The framework is expected to provide an opportunity to reconsider IT's proper adaptation to the needs of this knowledge based information society. A 'tool' has been developed as a means for better production. However, the current society may no developed as a means for better production. However, the current society may no longer require such a physical function of tools. An expansion in the amount of knowledge and its speedy generation are likely to bring the demand of cognitive tools, which assist human's mental processing and enhance mental capacities. In particular, a review of advanced knowledge on an architecture of human cognition suggests that human's information knowledge on an architecture of human cognition suggests that human's information processing capacity may be extremely limited so cognitive overload is likely to occur. Cognitive tools are thus suggested to play a role of distributed intelligence, which assists to reduce human's mental activities by its implications as mindtool. These may include computing, guided participation by a group of peers, instructors, or experts, inscriptional systems such as paper and pencil, computer and display, and situated cognition by ecological memory. In the current research, the effect of computer graphics as a mindtool on art work has been specifically examined. A review of cases of its application to art education in overseas suggests the practicality of the theoretical framework. Further studies are recommended to explore the details of cognitive activities, which are augmented with various mindtools.