회귀분석법을 이용한 로타리 공구의 절삭 특성

심승천,장성민,맹민재,정준기 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

This paper deals with the study of feasibility of rotary carbide tools in the machining of aluminium alloy. A rotary tool holder was designed and manufactured for this work. Experiments were performed using Taguchi methods and regression analysis to analyse the influence of various factors and their interactions on the cutting characteristics of rotary carbide tools during machining. The cutting force is influenced the most greatly at the inclination angle. The surface roughness is influenced distinctly at depth of cut. It deduced an equation to predict cutting force and surface roughness. Hence, it could be concluded here that the proposed model agrees with the experimental data satisfactorily.

삼차신경통으로 발현된 소뇌교각부의 표피양낭종 : 2례 증례보고

심재준,김범태,임수빈,신원한,최순관,변박장 대한신경외과학회 1997 Journal of Korean neurosurgical society Vol.26 No.8

쌍각 자궁과 동측의 골반성 발육부전신이 동반된 질개구 이소성 단일요관 1례

신준영,박성재,변동원,이상훈,정호준,심봉석 梨花女子大學校 醫科大學 醫科學硏究所 2002 EMJ (Ewha medical journal) Vol.25 No.2

A case of a female subject with a unilateral vaginal ectopic ureter associated with a single system, ipsilateral hypoplastic pelvic kidney and bicornuate uterus is reported. Although there are many reports of concomitant urinary and reproductive system malformations, a review of the literature shows these unique associations in the same patient to be extremely rare. This malformation is not limited to any combination of abnormal development of the mesonephric(wolffian) and paramesonephric(mllerian) ducts in the development of the urogenital system. Embryological aspects as well as clinical presentation, diagndstic approach and treatment applicable to this case are discussed.

Sleeve 혈관문합술에 대한 조직학적연구

유재덕,이세일,오석준,심기영 大韓成形外科學會 1983 Archives of Plastic Surgery Vol.10 No.2

During the past decade, microsurgery has become clinical routine and resulted in many technical innovations. Inspite of this, microsurgery still entails certain disadvantages; it is time consuming, technically demanding and sometimes results in distressful failure. The sleeve microanastomosis, proximal vessel end is inserted into distal vessel using only two extraluminal sutures, is easier and less time consuming than conventional end to end anastomosis. However, there is a few reports about the histological study to support the beneficial technique of the anastomosis. An animal study was carried out by doing 25 sleeve anastomoses of carotid arteries of white stratin rats and subsequent histological observations in different time interval in order to clarify the modesty of repair in anastomosed vessels. The following are noted as results: Patency rate of the anastomosis was 84%. No aneurysm was found at any site of the anastomosis. The narrowing of lumen of the inserted proximal vessel, the formation of thrombosis & fibrin clot in foci at proximal vessel end, and the loss of intima at the site of anastomosis were noticed in 3 days following the anastomosis. Still narrowing of the lumen of inserted vessel, the formation of thrombosis & fibrin clot in foci at proximal vessel end were persisted with focal necrosis of the media at the stitch area of dista lvessel in one week following anastomosis. Disappearance of thrombosis & fibrin clot on proximal vessel end complete restoration of intimal continuity with slight atrophy of media on distal vessel were noted in 3 week following anastomosis. Neoitima formation at anastomosis site with moderate atrophy of media on distal vessel were noted in 5 week following anastomosis. Subintimal hyperplasia was not observed except in one case of medial necrosis due to wide adventitial stripping in 8 week following anastomosis.

계지의 항염 효과에 관한 연구

박히준,이지숙,이재동,김남재,표지희,강전모,최일환,김수영,심범상,이제헌,임사비나 EAST-WEST MEDICAL RESEARCH INSTITUTE KYUNG HEE UNI 2005 東西醫學硏究所 論文集 Vol.2005 No.-

Objectives : Cinnamomi Ramulus (CR), the young twing of Cinnamomi loureirii nees, has been used for treating symptoms related to pain. rheumatic arthritis and inflammation in Korean herb medicine. This study was carried out to investigate the anti-inflammatory effect of CR in vivo and in vitro. Methods : Extracts of CR were prepared and the chemical components of the extracts were examined by gas chromatography-mass spectrometry (GC-MS). The extracts were administrated to the rat paw edema model induced by carrageenan to evaluate the anti-inflammatory effect of CR. The expressions of nitric oxide (NO). prostaglandin E2(PGE2), inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 were also quantified in lipopolysaccharide (LPS)-induced RAW 264.7 macrophages to survey the effect of CR in vitro. The main components were cinnamaldechyde and coumarin. Results : We examined the anti-inflammatory activity of the 80% ethanol extract of Cinnamomi Ramulus in vivo by using carrageenan-induced rat paw edema model. Maximum inhibition of 54.9% was noted at the dose of 1000㎎/㎏ after 2 hours of drug administration in carrageenan-induced rat paw edema and this showed a potent anti-inflammatory effect. Conclusions : The results showed that Cinnamomi Ramulus suppressed dose-dependently LPS-induced NO production in RAW 264.7 macrophages and also decreased iNOS protein expression. Cinnamomi Ramulus also showed a significant inhibitory effect in LPS-induced PGE2 production and COX-2 expression.

진행성 위암과 동반된 후복막 섬유화증 7예의 임상적 고찰

장재영,천영국,최우봉,김진오,조주영,이준성,이문성,심찬섭 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

Background/Aims: Retroperitoneal fibrosis is a fibrosing disease process which frequently develops ureteral obstruction. Malignant retroperitoneal fibrosis has been reported that various types of cancer including cancer of the breast, stomach, prostate, lung, cervix, uteri, colon, pancreas, ovary, and even Hodgkin's disease. While the pathogenesis remains obscure, small foci of metastatic neoplasm in the retroperitoneal space can elicit a desmoplastic reaction in secondary form to malignancy. Methods: Recently we experienced 7 cases of retroperitoneal fibrosis with advanced gastric cancer. So, we report 7 cases of retroperitoneal fibrosis with clinical and radiologic characteristics. Results: The most common signs and symptoms were related irreversible renal dysfunction. The urologic finding noted medial deviation of the involved ureters and hydronephrosis Conclusions: Clinical manifestations are abdominal pain, back pain, hydronephrosis, and uremia. When sudden back pain and hydronephrosis develop in advanced malignancy, physicians should be considerd for retroperitoneal fibrosis.

고량강의 항염증 작용에 대한 연구

박히준,이제현,김수영,심범상,구헌종,강전모,최일환,이재동,김남재,이지숙,임사비나 EAST-WEST MEDICAL RESEARCH INSTITUTE KYUNG HEE UNI 2005 東西醫學硏究所 論文集 Vol.2005 No.-

Objective : The use of herbal therapy is becoming an increasingly attractive approach for the treatment of various inflammatory disorders. The Alpiniae officinari Rhizoma is popular in Aisa as a traditional herbal medicine. Alpiniae officinari Rhizoma is a species of the ginger family(Zingiberacease). Method : This study was performed to investigate the anti-inflammatory effect of Alpiniae officinari Rhizoma extract by the methods of "carrageenan induced paw edema" and "Lipopolysaccharide-induced inflammatory mediators in mouse macrophage RAW 264.7 cells". Result : We suggest that Alpiniae officinari Rhizoma extract decreased paw volume induced by plantar injection of carrageenan. Also Alpiniae officinari Rhizoma extract inhibited nitric oxide, prostaglandin E₂production and induced nitric oxide synthase, cyclooxygenase-2 protein expression in Mouse macrophage RAW 264.7 cells stimulated with lipopolysaccharide. Conclusion : This study shows that Alpiniae officinari Rhizoma extract seems to have anti-inflammatory effect by inhibition of nitric oxide, prostaglandin E_(2) production and nitric oxide synthase, cyclooxygenase-2 protein expression.

슬관절 내측부 인대 손상의 보존적 치료

임홍철,심재학,남혁우,왕준호,노영진 대한스포츠의학회 2000 대한스포츠의학회지 Vol.18 No.2

Purpose : The medial collateral ligament injury is the most common injury of the knee. Recently Non-operative treatment has been preferred than operative treatment and most of patients have satisfactory clinical results after non-operative treatment. But a few patients have continuous instability after non-operative treatment, so the purpose of this study is to fine out the cause of persistent symptom. Methods and Materlals : We performed a retrospective study of one hundred thirty seven patients with medial collateral ligament injury treated non-operative from January 1990 to December 1997. W divided patients into two groups: isolated medial collateral ligament injury (groupⅠ): medial collateral ligament injury with concomitant anterior cruciate ligament injury (groupⅡ) and we analysed MRI finding, valgus instability, and Lysholm knee score. Result : At the follow up, three of group Ⅰ, five of group Ⅱ had persistent grade Ⅲ valgus instability. In group Ⅰ, we could find two case of rupture of the proper of medial collateral ligament with inward inversion and one case of concomitant posteromedial compartment injury. We could find the proper rupture of medial collateral ligament with inversion inward in two patients, the injury of posteromedial compartment in one patient. Two patients of group Ⅱ with grade Ⅲ valgus instability had anterior instability with laxity of grafted tendon after anterior cruciate ligament reconstruction. Conclusion : Most of isolated injury of the medial collateral ligament heals wthout operative intervention. But in case of rupture of the proper portion of medial collateral ligament with inversion inward or concomitant injury of posteromedial compartment, we should consider the operative treatment of medial collateral ligament. In case of medial collateral ligament injury with anterior cruciate ligament, it would better to consider the delicate reconstruction of anterior cruciate ligament.

쐐기형 레일클램프에서 조의 회전을 방지하기 위한 적정 쐐기각에 대한 연구

한동섭,한근조,심재준,이성욱 東亞大學校 大學院 2005 大學院論文集 Vol.30 No.-

Recently many countries have concentrated their effort on the port automation, in order to be the Hub-port, that the ULCS (Ultra Large Container Ship) could come alongside the quay in their region. As the magnitude of the container ship increases, that of the container crane (used in quay) increases from 50ton-class to 61ton-class more and more. The wind velocity criteria to design the structures used in the port was upgraded from 30m/s to 40m/s due to change of the weather condition. When we design wedge type rail clamp which can protect container crane from sudden wind blast with constant clamping force regardless of the operating period, it is important to determine the angle of wedge within proper range. In this study we designed the wedge angle of the wedge-type rail clamp using the FEA.

분할 기법을 이용한 3차원 얼굴 형상의 추출

김익동,이준재,심재창 국립7개대학공동논문집간행위원회 2002 공업기술연구 Vol.2 No.-

This paper proposes a 3D facial reconstruction method using segmentation method. 3D laser scanner, which is based on the laser triangulation, projects a sheet beam on the face in horizontal. At the same time, laser profile images are captured by CCD camera. Center profiles should be extracted from the all profile images. And the depths of those profiles are composed as a 3D face. Generally, when we use laser, it must be used with low wavelength to remove the harm to the body, especially eyes, It makes laser occluded at some region such as hair, chin and the edge of the face. It makes 3D reconstruction more difficult. Proposed method segments a 3D face into FSFS, SSFS and IFS depending on laser intensity reflection coefficient. Each segment was extracted with different algorithm. Finally, those are composed of 2D point cloud of facial depth. As a result, we can get a more reliable 3D face.