쐐기형 5급 와동과 근관와동을 복합레진으로 수복한 상악소구치에 대한 응력 분석 : 3차원 유한요소법적 연구

이선화,김현철,허복,김광훈,손권,박정길 大韓齒科保存學會 2008 Restorative Dentistry & Endodontics Vol.33 No.6

이 연구의 목적은 쐐기형 5급 와동과 근관와동을 복합레진으로 수복한 상악 제2소구치에 대한 응력 분포를 3차원 유한요소법으로 분석하여 평가하기 위한 것이다. 발치된 상악 제2소구치를 이용하여 Micro-CT로 스캔한 후 3D-D0C-TOR로 3차원 유한요소 모형을 제작하였다. 제작된 소구치 모형에 근관 와동을 형성하고 쐐기형 5급 와동과 글래스 아이오노머 기저재의 사용 여부를 구분하여 근관 와동을 혼합형 복합레진으로 충전하였다. 협측 교두 또는 설측 교두에 500 N의 하중을 가하고, ANSYS 8.0 프로그램으로 인장 응력의 분포를 분석하여 평가한 결과 베이스 사용유무에 따른 응력 분포의 차이는 없었다. 협측 교두에 하중이 가해질 때, 하중점과 교합면의 중심구, 구개측 백악법랑경계부에 과도한 인장 응력이 집중되었으며, 5급 와동이 없는 경우보다 5급 와동이 있는 경우에 약간 더 높았다. 설측 교두의 협측 경사면에 하중이 가해질 때, 하중점과 교합면의 중심구, 협측 치경부에 과도한 인장 응력이 집중되었으며, 5급 와동이 있는 경우가 5급 와동이 없는 경우보다 약간 더 낮았다. The purpose of this study was to investigate the distribution of tensile stress of canal obturated maxillary second premolar with access cavity and notch-shaped class Ⅴ cavity restored with composite resin using a 3D finite element analysis. The tested groups were classified as 8 situations by only access cavity or access cavity with notch-shaped class Ⅴ cavity (S or N), loading condition (L1 or L2), and with or without glass ionomer cement base (R1 or R2). A static load of 500 N was applied at buccal and palatal cusps. Notch-shaped cavity and access cavity were filled microhybrid composite resin (Z100) with or without GIC base (Fuji Ⅱ LC). The tensile stresses presented in the buccal cervical area, palatal cervical area and occlusal surface were analyzed using ANSYS. Tensile stress distributions were similar regardless of base. When the load was applied on the buccal cusp, excessive high tensile stress was concentrated around the loading point and along the central groove of occlusal surface. The tensile stress values of the tooth with class Ⅴ cavity were slightly higher than that of the tooth without class Ⅴ cavity. When the load was applied the palatal cusp, excessive" high tensile stress was concentrated around the loading point and along the central groove of occlusal surface. The ten-sile stress values of the tooth without class Ⅴ cavity were slightly higher than that of the tooth with class Ⅴ cavity.

肝吸蟲症에 있어서 Praziquantel 投與 前後의 抗體價變動에 관한 硏究

李權海,嚴基善,林漢鍾 고려대학교 의과대학 1986 고려대 의대 잡지 Vol.23 No.3

The changes of antibody to adult worm of Clonorchis sinensis were studied using ELISA before and after treatment. Sera from 93 cases of confirmed human clonorchiasis were examined before treatment and at six months after treatment with a single dose of praziquantel 40 mg/kg bwt. Serum IgG level against C. sinensis (mean absorbance values at 488 nm) of 30 healthy controls from non-endemic area were 0.202±0.099, Sera of clonorchiasis patients showed significantly higher level of serum IgG (1.397±0.583) before treatment comparing with those of healthy controls. At after treatment the IgG levels were lower (0,858±0.408) than those of before treatment. At before treatment, the serum IgG level was highest in the group of very heavy infection (1.937±1.428), followed by heavy (1.860±0.297), moderate (1.491±0.579) and light (1.109±0.507) infection. The serum IgG level decreased significantly in heavy infection group (1.015±0.448) and in very heavy infection group (1.143 0.506) after treatment, then followed by moderate infection group (0.849±0.412) and light infection group (0.753±0.341). The egg discharge of thirty four out of ninty three clonorchiasis patients was negatively converted in stool examination and showed much decreased serum IgG level (0.718±0.356) as well as in the egg reducted fifty nine patients (0.943± 0.409). And the high antibody level groups showing the absorbance value higher than 1.50 (n=45) revealed more significant decrease of serum IgG level after treatment than the low antibody level group with less than 1.50. Conclusively, it was observed that serum specific IgG level was decreased at six months after treatment and the decreasing tendancy was more significant in higher E.P.G. group.

건설기획단계에서의 위험요인 도출

권순오,김선규,이낙운 강원대학교 산업기술연구소 2005 産業技術硏究 Vol.25 No.B

The planning phase of construction project success or failure of the enterprise decision the 1st dangerous duration which occurs very there is a possibility of making with the phase which is important, of construction project in life cycle most many risk. But the risk management from planning phase well does not become accomplished is the actual condition from existing construction project. Consequently, it classifies the risk event from project initial planning phase of construction project from this study which probably is substantial risk event the possibility of accomplishing from a planning phase successfully in order to be.

폐경기 여성에서 호르몬 대치 요법시 병행 투여된 프로제스토젠 투여 방법에 따른 골대사의 생화학적 지표에 미치는 영향

이권해,강선영,임경빈,이해혁,구도형,이석민 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.1

Purpose : To evaluate the impact of added progestogen on biochemical markers of the bone turnover undergoing hormone replacement therapy in the postmenopausal women. Materials and Methods : There are 71 postmentopausal women who are divided into three groups (Group I, Group II, Group III). Group I(continuous combined)is given conjugated equine estrogen (CEE, 0.625mg, day 1-30) plus medroxyprogesterone acetate (MPA, 2.5mg, day 1-30), Group II(unopposed estrogen) is given conjugated equine estrogen (CEE, 0.625mg, day 1-30) plus medroxyprogesterone acetate (MPA, 5mg, day 1-12). And there were measured serum osteocalcin, serum total alkaline phosphatase and urinary deoxypyridinoline excretion before starting hormone replacement therapy and 12 months later. Results : The serum osteocalcin, serum total alkaline phosphatase and urinary deoxypyridinoline excretion significantly decreased after hormone replacement therapy (Group, I, II, III). And there was no significance in decreases in biochemical markers of the bone turnover among three groups. Conclusions : It was concluded that the impact of added progestogen on the biochemical markers of the bone turnover undergoing hormone replaced therapy in postmenopausal women was not significant than nothing added group. Thus we concluded that progestogen was not impact on decreasing on the biochemical markers of the bone turnover in postmenopausal women undergoing hormone replacement therapy.

The Effect of Dietary Lipids on CVD Risk Factors in Ovariectomized Rats

Kwon,Ja Ryong,Ahn,Hae Seon,Lee,Sang Sun 韓國營養學會 1997 Journal of Nutrition and Health Vol.30 No.4

초등학생의 고무줄놀이 안무활동 지도를 위한 영상 교재 구축

이관형,김명철,권선자 서울敎育大學校 初等敎育硏究所 2002 한국초등교육 Vol.13 No.2

The purpose of this study is to build elastic string play activities systematically and to provide learning-steps as follows : basic-motions, developed-motions, applied- motions and choreographic-motions. And as teaching materials, we make VCD including learning-step simulation by command and music, and CD including music. 1. We make basic-motions as we analyze a form and constituent of elastic string play. Basic-motions are as follows : Stabbing, Spinning, Hopping, Kicking, Winding, Stamping 2. As we infer from changing the direction and the movement of basic-motions, we construct developed-motions. 3. As we connect two different basic-motions and pairs them, we develop applied-motions. 4. We make our students practice above motions according to above sequence by command and afterward practice by music. 5. After students learn above motions, we let our students connect above motions with such motions as clapping, changing spot, aerobic motion and folk dance motion. 6. We make our students create and practice choreographic-motions smoothly by group studying, practicing by command, doing trial and error and completing by music.

外食業의 展望과 租稅管理方案

조병권,이선표 龍仁大學校 1997 용인대학교 논문집 Vol.14 No.-

The eating out industry is divided into two groups. One is the chain corporation of fast food and family restaurant, the another is the general restaurant. Nowadays the eating out industry has many problems, such as rapid market penetration of foreign brand, economic loss of chain system, decrease of small scale of traditional eating out industry, lack of research and development in eating out industry, and ignorance of managers in eating out industry. But The eating out industry is spotlighted as a new distribution industry and settled down in everyday life. The eating out industry in Korea was introduced in 1970s with the improving of eating habits as the result of plan for economic development, and consisted of mainly after the opening of the Lotteria chain in 1979. Finally, The scale of the eating out industry in Korea is 20 million million won in the year 1995. This drift of the eating out industry growth is kept up. Therefore, reasonable tax management devices are necessary for growth of the eating out industry. Thus, the purpose of this study analyze prospect of the eating out industry and to propose reasonable tax management devices.

中小企業 租稅支援制度의 問題點 및 改善方案

조병권,이선표 龍仁大學校 1998 용인대학교 논문집 Vol.15 No.-

Our small and medium-sized enterprises have many problems in spite of their importance and roles, because of small in size, the limit of fund raising capacity, underdeveloped technical level, aged facilities. and premodern administration. In the current tax law enacted to reduce the tax burden, there are two ways to support small and medium-sized enterprises. One is direct supporting taxation system which reduces and exempts the change of tax amounts, that is reduction of tax amounts, income subtraction, and subtraction of tax amounts. The other is an indirect supporting taxation system in which a reserved fund and a special repayment put off the tax collecting. I suggest the following improvement devices of the small and medium sized enterprises tax supporting system. First, there is a need for the positive and active attitude of government about small and medium sized enterprises tax supporting. Second, to raise the efficiency of tax supporting policy, there is a need for of selectional, differential reinforcement of tax supporting. Third, because present tax deduction regulation law is applied to both small-medium sized enterprises and general high enterprises, there is limit of efficient tax supporting in case of small and medium sized enterprises. So government needs to make and use 'Special Law for Small and Medium Sized Enterprises Tax Deduction Regulation' for more effective tax supporting.

골다공증성 대퇴골 골절의 위험인자 평가

정선관,박성훈,김혜원,이영환,윤권하,최시성,노병석,원종진 圓光大學校 醫科學硏究所 2007 圓光醫科學 Vol.22 No.1

Validation of the oxford classification of iga nephropathy: A Single-Center Study in Korean Adults

( Ho Young Lee ),( Sul Hee Yi ),( Mi Seon Seo ),( Jin Nam Hyun ),( Jin Seok Jeon ),( Hyunjin Noh ),( Dong Cheol Han ),( Seung Duk Hwang ),( So Young Jin ),( Soon Hyo Kwon ) 대한내과학회 2012 The Korean Journal of Internal Medicine Vol.27 No.3

Background/Aims: The recently published Oxford classification of IgA nephropathy (IgAN) proposed a split system for histological grading, based on prognostic pathological features. This new classification system must be validated in a variety of cohorts. We investigated whether these pathological features were applicable to an adult Korean population. Methods: In total, 69 adult Korean patients with IgAN were analyzed using the Oxford classification system at Soonchunhyang University Hospital, Seoul, Korea. All cases were categorized according to Lee`s classification. Renal biopsies from all patients were scored by a pathologist who was blinded to the clinical data for pathological variables. Inclusion criteria were age greater than 18 years and at least 36 months of follow-up. We excluded cases with secondary IgAN, diabetic nephropathy combined other glomerulopathies, less than 36 months of follow-up, and those that progressed rapidly. Results: The median age of the patients was 34 years (range, 27 to 45). Mean arterial blood pressure was 97 ± 10 mmHg at the time of biopsy. The median follow-up period was 85 months (range, 60 to 114). Kaplan-Meier analysis showed significant prognostic predictions for M, E, and T lesions. A Cox proportional hazard regression analysis also revealed prognostic predictions for E and T lesions. Conclusions: Using the Oxford classification in IgAN, E, and T lesions predicted renal outcome in Korean adults after taking clinical variables into account.