콘크리트 내구성 통합 실험 기법 Yoon’s Test의 개발

윤인석 ( Yoon In-seok ),우영웅 ( Woo Young-woong ),김나리 ( Kim Na-ri ),맹찬호 ( Mang Chan-ho ) 한국구조물진단유지관리공학회 2013 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.17 No.2

활막육종

김재도,윤영민,손정환,홍영기,손영찬,박정호,Kim, Jae-Do,Yoon, Young-Min,Son, Jeong-Whan,Hong, Young-Gi,Son, Young-Chan,Park, Jeong-Ho 대한근골격종양학회 1996 대한골관절종양학회지 Vol.2 No.1

Synovial sarcoma is an uncommon malignant soft tissue tumor which usually occurs in young-aged person, and frequently involves the lower extremities. Many authors recommended wide excision, adjuvant chemotherapy and radiation therapy. The proposed factors that affect the prognosis are age, size of tumor, site of tumor in the body, depth of tumor, histologic grade and method of treatment. The purpose of the study is to analyze the factors that affect the 5-year survival rate. We retrospectively evaluated 19 cases of synovial sarcoma treated in the Kosin University Medical Center from Jan. 1982 to Dec. 1994. The overall 5-year survival rate was 47.6% and the 5-year survival rates were significantly higher(P<0.05) in the group with smaller size of mass. The significantly lower 5-year survival rates were observed in the patient with deeply located lesion and with higher histologic grade. The 5-year survival rates were higher in the patients treated with wide excision than in the patients treated with amputation. But there was no significant difference between these groups. The adjuvant chemotherapy and radiotherapy were performed. In conclusion, we suggest that the better prognosis will be observed in the patients with smaller size of tumor mass, superficially located and lower histologic grade.

Ocular MALT Lymphoma : Report of Two Cases

윤영묵,장효찬,김동석,김상원,박미옥,박재복 대구효성가톨릭대학교 1998 연구논문집 Vol.57 No.2

Lymphoma arising in mucosa-associated lymphoid tissue(MALT) is extranodal marginal zone lymphoma displaying a proliferation of follicle marginal zone-type cells(centrocyte-like cells or monocytoid B-cells), often with surrounding reactive germinal centers and lympoepithelial lesions. This typically expresses pan-B-cell markers and monotypic immunoglobulin but not CD5 or CD10. Ocular MALT consists of the lacrimal gland, lcular soft tissue, orbit, conjunctiva and cornea. Lymphoma arising in thses sites is of very rare occurrence in up to 1.5% of all patients with non-Hodgkin's lymphoma. Herein we report two cases of ocular MALT lymphoma which was very rare in the dermatologic field. Case 1, 73-year-old man, developed the right upper conjunctival swelling measuring about 2.0×2.5cm for about 1 year. Histologically, the excised lesion showed follicular centers and infiltration of centrocyte-like cells of B-cell lineage in the stroma but no lymphoepithelial lesions, consistent with low-grade B-cell lymphoma. Case 2, a 66-year-old female, had a rapid course of about 1.2×1.0cm-sized, soft, wellow mass arising from lacrimal gland of the right upper eyelid for about 1 month. Hostologically, the lesion showed diffuse patterend features admixed with centrocyte-like cells and large cells such as centroblast, compatible with high-grade lymphoma. Case 2 received combined chemotherapy of m-BACOD, with a somewhat improvement.

有機農業의 實態와 發展에 관한 事例 硏究 : 忠南 洪城郡 洪東面 有機農家를 中心으로

尹英相,洪性贊,金成敏,具漢謨,申東一,金昌護,姜熙慶 公州大學校 資源科學硏究所 1997 資源科學硏究論文集 Vol.5 No.-

This study was carried out to improve the organic farming system about crop cultivation, compost production and application, plant diseases & pest control, weed control and marketing system of organic farming products to the case study in Chungnam Hongdong area. Agricultural technologies concerning pest & diseases control, weed control and compost production are not established due to lacks of systemized researches by the agricultural scientist, and agricultural machines profitable to this works had not developed yet. In cropping system, reasonable crop rotation had not conducted. The related cultivation of vegetables on the same ground for a long time cause a various plant disease easily. So crop rotation is a reasonable method about soil nutrient utility and soil disease control. It is a good method that introduce the barley and wheat in this field crop system. Those crop have a long root, so can use the other nutrient against the vegetable. In organic farming products, the safety and quality of products by the National Agricultural Products Inspection Center had not inspected except rice, lettus and apple. Inspection is needed for the development of organic farming and mutual confidence between producer and consumer, because the mutual confidence is a major thing to sustain the organic farming. In products marketing, it is more need for the information of organic farming products. Nowaday most products are marketed in Seoul region, but it is not a good method. To search the consumer in near region is a good method for decrease the cost of conveyance and maintain the quality of products. The varieties of distribution structure of organic farming products are required. The products are sold to department store in large city and the prices are about 30% higher than normal products. But when those are supplied in near region, the prices of those are similar to normal products. Direct transactions in near regions is a good method for decrease the cost of conveyance and strength the mutual confidence between producer and consumer.

신이식 환자에서 EBV감염과 관련된 악성 임파종 2예

윤선애,진동찬,김용수,신완식,윤영석,방병기,최영진,심상인,고용복 大韓移植學會 1993 Korean Journal of Transplantation Vol.7 No.1

pH 5.5에서 재광화 용액의 포화도 변화가 인공 탈회된 법랑질의 재광화에 미치는 영향

곽영준,김의성,박성호,공형규,이윤,이찬영 大韓齒科保存學會 2008 Restorative Dentistry & Endodontics Vol.33 No.5

초기 법랑질 우식의 경우 주위의 pH. 유기산의 종류 및 농도,치아의 무기질 및 유기질의 화학적 조성,불소의 농도,용액의 포화도등에 의해 영향을 받는다고 하였다. 본 연구에서는 lactic acid를 이용하여 법랑질을 인공 탈회시키고, pH 5.5인 포화도가 다른 세 가지 재광화 용액 (포화도 0.25,0.30, 0.35)으로 12일간 처리한 후,편광 현미경에서 얻은 상에서 탈회 깊이의 변화,우식 표면층 폭의 변화,무기질의 양적 변화를 Photoshop, Image pro plus, Scion Image, Excel을 이용하여 비교,분석하였다. 1. pH 5.5 에서 재광화 용액의 포화도가 증가할수록 우식 표면층의 폭은 증가하였다. 2. pH 5.5 에서 l 군의 경우 우식 부위에 전반적으로 재광화가 일어났으나,3군의 경우 우식 표면층에서만 재광화의 양상이 뚜렷하게 나타났고, 2군에서는 1군과 3군의 중간적인 양상이 나타났다. 한편,3군의 경우 1, 2 군보다 우식 표면층의 폭이 유의하게 증가하였다. 결론적으로 본 실험의 조건에서 포화도가 가장 낮았던 군에서는 우식 표면층에서 우식 섬부까지 전반적으로 재광화가 일어난 반면,포화도가 높아질수록 우식 표면층의 폭은 증가하였으나 우식 심부에서는 큰 변화를 보이지 않는 양상이 나타났다. The purpose of this study is to observe and compare the remineralization tendencies of artificially demineralized enamel by remineralization solutions of different degree of saturations at pH 5.5, using a polarizing microscope and computer programs (Photoshop, Image pro plus, Scion Image, Excel). For this study, 36 sound permanent teeth with no signs of demineralization, cracks, or dental restorations were used. The specimens were immersed in lactic acid demineralization solution for 3 days in order to produce dental caries artificially that consist of surface and subsurface lesions. Each of 9 or 10 specimens was immersed in pH 5.5 lactic acid buffered remineralization solution of three different degrees of saturation (0.25, 0.30, 0.35) for 12 days. After the demineralization and remineralization, images were taken by a polarizing microscope (× 100). The results were obtained by observing images of the specimens, and using computer programs, the density of caries lesions were determined. In conclusion, in the group with the lowest degree of saturation, remineralization occurred thoroughly from the surface to the subsurface lesion, whereas in the groups with greater degree of saturation showed no significant change in the subsurface lesion, although there was corresponding increase in the remineralization width on the surface zones.

평면 고위 결찰술 및 함입 발거술을 이용한 하지 정맥류의 치료 경험

김영욱,허승,나목찬,윤우성 대한혈관외과학회 2002 Vascular Specialist International Vol.18 No.1

Purpose: Flush high ligation of the saphenofemoral or saphenopoplieal junction combined with invaginated stripping of the greater saphenous vein to just below the knee or perforate invaginate stripping of the proximal lesser saphenous vein appears to be the method of choice for good clinical results and low incidence of damage to the saphenous or sural nerve, and is important in the prevention of recurrence. Method: From January 2001 to August 2001, we performed 84 operations for 72 patients with varicose veins. Among them, 77 flush high ligations (62 saphenofemoral and 15 saphenopopliteal) and 64 invaginated strippings (55 greater and 9 lesser saphenous veins) were performed. Result: Seventy seven flush high ligations were successfully performed in all patients, but 2 invaginated strippings were failed due to their large branches of greater saphenous veins. All of 9 proximal invaginated strippings for lesser saphenous veins were completely performed without any complications. As early postoperative complications related with invaginated strippings for greater saphenous veins, 24 (43.6%) cases of ecchymosis and 5 (9.1%) cases of paresthesia were occurred at thigh. One case of wound infection at popliteal fossa and 3 cases of wound inflammation at inguinal area were occurred. But those complications were recovered within 10 days. Conclusion: The results show that the invaginated stripping is very useful for patients with varicose veins, especially in stripping of lesser saphenous veins and the flush high ligation is safe for the treatment of junctional incompetence.

유산소성 운동이 혈중지질 및 체지방률에 미치는 영향

홍성찬,김영빈,윤영복,박병근,김유성 圓光大學校 附設 體力科學硏究所 2007 體力科學硏究 Vol.29 No.-

This study is aimed at investigating the effects of aerobic exercise of female college students on blood lipids and body fat percentage. Twelve female students were selected for this study and each 6 of them were alloted into the control group and experiment group. The experiment group underwent jogging for 12 weeks and its effects on blood lipids and body fat percentage were measured at the 4th, 8th and final week of the jogging program. The outcomes of the experiment could be summarized as follows: 1. As for HDL-C due to jogging, the experiment group showed an eminent increase with statistical significance(p<.05). 2. In case of LDL-C following jogging, there was a great amount of decrease in the experiment group after the exercise with statistical significance(p<.05). In sum, it is revealed from the present study that the prescribed magnitude and length of exercise can be of help for HDL-C and LDL-C that have been recognized as indicators for diseases of adult people.

4사이클 가솔린 機關의 熱精算에 관한 硏究

나찬주,윤영환,윤건식 國立 昌原大學校 産業技術硏究所 1994 産技硏論文集 Vol.8 No.-

The performance tests for an 87 PS 4-cylinder 4-cycle gasoline engine were carried out in order to measure the heat balances in various operating conditions. The experimental apparatus is equiped with 130kW eddy current dynamometer. In the heat balance diagram of the engine, mechanical losses could be quite accurately estimated by substracting shaft power from indicated power of the engine since the indicated power was obtained from indicator diagram by a piezo-electric pressure sensor located at the cylinder head and the shaft power was measured by the eddy current dynamometer. The typical results obtained in this study can be summarized as follows. First, The best engine performance shows around 2000 rpm of the engine speed in most running conditions. Second, The heat transfer rate to cooling water and to exhaust gas as well as output and frictional works change considerably with the engine speed and boost pressure. However, the extra losses(those are, heat transfers to oil, air, ete.) do not change much with respect to them. Third, The rate of mechanical loss increases as engine speed increases, but, at the same engine speed, the rate of mechanical loss does not change much as boost pressure varies.

마산만 퇴적물의 중금속 및 유기염화합물 오염에 관한 연구

이찬원,민병윤,권영택,양운진,이규환 경남대학교 환경문제연구소 1990 환경연구 Vol.12 No.-

마산내만 및 마산만 유임 주요하천의 오염퇴적물을 1988년 7월부터 1989년 8월에 걸쳐 채취하여 중금속 및 유기염소화합물을 분석하였다. 오염퇴적충의 뚜께는 10㎝에서 169㎝의 넓은 분포를 보였으며 조사지점의 중금속농도는 지점에 따라 많은 차이를 나타내었다. 특히 인근에 마산수출자유지역 및 조선산업이 위치한 조사 지점에서는 모든 중금속의 농도가 가장 높게 나타났다. 마산만 퇴적오염물 중금속 농도를 오염된 일본의 자료와 비교하였을때 Osaka만의 수온을 제외하고 모든 평균농도가 높게 나타났다. 유기염소화합물(PCB 및 DDE)의 농도는 주거지역 및 공장지대가 함께 위치한 산호천 및 마산시 연안지역에서 높게 검출되었다. 본 연구결과에 의하면 마산만과 같은 폐쇄성 해역에서 중금속 오염원으로 공장폐수가 고려될때는 퇴적된 오염물질의 중금속 분석이 좋은 척도가 철 수 있음을 시사하고 있다. Sediments were collected from Masan bay and two main waterways into Masan Bay in the period of July 1988 to August 1989 for the analysis of heavy metals and Organochlorine compounds. The polluted layer of black sludge had a wide range between 10㎝ to 169㎝ and the content of heavy motels was widely distributed from site to site. One site near the Masan free-export area and a shipmaking company was extremely contaminated by heavy metals. All the average concentration of heavy metals in the sediments from Masan Bay were higher than those from Japanese bays compared except Hg from Osaka Bay. Higher levels of PCBs and DDE were found in sediments from Sanho stream and along the coastal area of Masan city. The results obtained in this study imply that the heavy metal analysis of sediments may be a useful to reveal the pollution sources in a closed bay fuck as Masan Bay.