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색상 측정 기기를 이용한 복합레진 적층 수복과 단일 수복의 색상 비교 분석
송영상,김자현,이빈나,장지현,장훈상,황윤찬,오원만,황인남 大韓齒科保存學會 2012 Restorative Dentistry & Endodontics Vol.37 No.2
Objectives: This study analyzed the difference in color caused by different thickness in enamel layer of composite resins when applied with single and layering placement technique, and evaluated if the results agreed with the shade guide from the manufacturers to verify reliability of the color matching process of the manufacturers. Materials and Methods: For single composite resin samples, 6 mm diameter and 4 mm thickness cylindrical samples were fabricated using Ceram-X mono (DENTSPLY DeTrey) and CIE L*a*b* values were measured with spectrophotometer. Same process was done for layering compositie resin samples, making 3 dentinal shade samples, 4 mm thickness, for each shade using Ceram-X duo (DENTSPLY DeTrey) and enamel shade resins were layered in 2 mm thickness and CIE L*a*b* values were measured. These samples were ground to 0.2 mm thickness each time, and CIE L*a*b* values were measured to 1 mm thickness of enamel shade resin. Results: Color difference (△E*) between single and layering composite resin was 1.37 minimum and 10.53 maximum when layering thicknesses were between 1 mm and 2 mm and 6 out of 10 same shade groups suggested by manufacturer showed remarkable color difference at anythickness (△E* > 3.3). Conclusion: When using Ceram-X mono and duo for composite resin restoration, following the manufacturer's instructions for chossing the shade is not appropriate, and more accurate information for Ceram-X duo is needed on the variation and expression of the shades depending on the thickness of the enamel. (Restor Dent Endod 2012;37(2):84-89)
조상미,김지나,조정화 한국장애인고용공단 고용개발원 2010 장애와 고용 Vol.20 No.3
취업장애인의 저임금은 장애로 인한 높은 추가비용과 공적급여의 미비로 인해 빈곤과 직결되어 있으며, 사회의 양극화 현상을 심화시키는 심각한 문제이다. 따라서 취업 장애인의 임금을 결정하는 요인을 포괄적이고 다각적으로 파악하고, 향후 발전적 방향에 대한제시가 필요한 시점이다. 본 연구는 취업장애인의 임금에 영향을 미치는 요인을 인구학적,장애관련, 인적자본, 노동시장 요인에 따라 분석하고 근로소득을 높이기 위한 정책적, 실천적 함의를 제안하고자 하였다. 이를 위해 제1차년도 장애인고용패널 데이터의 취업장애인 중 자영업자와 고용주를 제외한 임금근로자 1,212명을 대상으로 분석하였다. 연구결과, 인구학적 요인에서 성별, 결혼상태, 연령이, 장애관련 요인에서 장애유형, 장애등급, 장애발생 연령이, 인적자본 요인에서 고용서비스 이용여부, 직업교육 경험여부, 자격증 유무, 직급, 교육연한, 근속연수가, 노동시장 요인에서는 노동조합 유무, 복리후생 유무, 종사상 지위, 일자리 산업내용, 사업체 규모, 월근무시간이 월임금수준에 유의한 영향을 미치는 것으로 나타났다. 이를 통해 취업장애인의 임금을 향상하기 위한 방안을 인적자본 요인과 노동시장 요인을 중심으로 제언하였다. For workers with disabilities in Korea earned income accounts for the major proportion of their total income. This is due to a lack of public assistance for workers with disabilities, which means working is the major source of income. However, despite the importance of employment, their earned income is very low, so their economic situation is precarious. Nevertheless, there has been little research done on the determinants of earned income of workers with disabilities. The purpose of this study is to examine how demographic, disability, human capital, and employment characteristics affect earned income. Throughout this research, this study aims to propose implications for social work policy and practice to increase earned income. Utilizing data from ‘Panel Survey of Employment for the Disabled,’ 1,212 samples were analyzed. Results found that the type of disabilities, gender, vocational training, occupational type, and employment status influence the earned income of workers with disabilities. Based on the findings of this study, this paper argues that the capability of workers with disabilities should be improved by individualized vocational training. This paper also recommends the expansion of the employment market in the public sector and enterprise sector.
통계적 실험계획에 의한 PECVD로 증착된 실리콘 산화막의 특성 분석
李晟準,金洸範,崔鑛泉,漢秀一,尹知原,金劉邏,朴宰賢,洪尙眞 명지대학교 산업기술연구소 2006 産業技術硏究所論文集 Vol.25 No.-
According as the current needs of low temperature in semiconductor manufacturing process, PECVD using low temperature and high deposition rate is becoming more of a concern. However, PECVD equipment has the defect possibility on the interface between substrates and gate oxide layer, because ions or electrons with much high energy clash the interface. In this study, we embarked on the experiment with Statistical Design of Experiment and then also analyze which parameters influence on the characteristic of silicon dioxide filems. We finally made a constructive proposal for process optimization conditions.
정선영,나지훈,최윤정,고성애,조규향,박종원,도준영,윤경우 영남대학교 의과대학 2009 Yeungnam University Journal of Medicine Vol.26 No.1
Peritonitis is a serious problem in patients undergoing peritoneal dialysis. Rarely pneumatosis intestinalis can occur as a complication of this infectious process. Pneumatosis intestinalis is a potential life threatening condition with a challenging management. The mortality of peritoneal dialysis patients with pneumatosis intestinalis secondary to mesenteric ischemia is almost 100%. We describe a rare case of pneumatosis intestinalis in a peritoneal dialysis patient who developed Staphylococcus aureus peritonitis which was initially treated with appropriate antibiotics. Since initial response to therapy was not achieved, an abdominal computerized tomography was done which revealed a pneumatosis intestinalis. A laparotomy was performed and small bowel necrosis was seen. A segmented resection with ileostomy, jejunostomy was done. Though surgical treatment was performed, the patient died in 2 weeks after admission. Pneumocystitis intestinalis in peritoneal dialysis peritonitis is a uncommon complication which requires prompt evaluation to rule out mesenteric ischemia as it carries a high mortality and its management will be surgical.
후두 및 하인두 편평세포암종에서 E-cadherin의 면역조직화학적 발현
도남용,나한조,이도용,허준,최지윤,이홍영,임성철 조선대학교 2000 The Medical Journal of Chosun University Vol.25 No.2
Background and Objectives : The cell-cell adhesion molecule E-cadherin is necessary for the maintenance of the epithelial cellular structure. We were designed to confirm the significance of E-cadherin as a marker for differentiation and invasiveness of squamous cell carcinoma of the larynx and hypopharynx. Materials and Methods : Our study was investigated for the immunohistochemical expression of the epithelium-specific cell adhesion molecule E-cadherin in formalin fixed paraffin embedded tissue specimen of 32 cases of squamous cell carcinoma of larynx and hypopharynx. Results : The positive expression of E-cadherin was 56.3%(18 cases) in squamous cell carcinoma of the larynx and hypopharynx. Decreased E-cadherin expression was a stastistically significant correlation with a increased grade of lymph node stage and clinical stage. Reduced expression was seen in the large tumor size and poorly differentiated tumors, but these result was not statistically significant. Conclusion : The expression of E-cadherin may be related with progression of squamous cell carcinoma of the larynx and hypopharynx. But these correlation were not sufficient for the prognostic indicators in squamous cell carcinomas of the larynx and hypopharynx.
이기철,서영상,구지영,이나경 東亞大學校建設技術硏究所 2004 硏究論文集 Vol.28 No.1
In this study, the spatiotemporal surface temperature changes were analyzed in the Korean pennisula. The surface temperature variation was estimated using the split-window method and NOAA/AVHRR data in 1991, 1995 and 2000. The ranges of differences were 3-15℃ around the penninsula. The differences in seasonal variations and yearly flucturations in big cities were lower than those in rural areas and showed clearly the effects of the urbanization. The characteristics of urban heat affects were further determined based on the day and night time temparature comparision on Busan metropolitan area between these periods. Finally, the future use of this technology was suggested for the urban environmental planning.