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가상 생체외 사체 실험용 경추 다물체 동역학 모델 개발
임대섭(Dae Seop Lim),이기석(Ki Seok Lee),김윤혁(Yoon Hyuk Kim) 대한기계학회 2013 大韓機械學會論文集B Vol.37 No.10
본 연구에서는 가상 생체외 사체실험을 수행할 수 있는 경추 다관절 동역학 모델을 개발하였다. 평균크기 한국인 의료영상과 관절 및 연부조직의 물성 정보를 기반으로 하여 경추 동역학 모델을 개발하였다. 개발된 모델의 검증을 위하여 경추 단분절 및 다분절 모멘트-각도 관계, 인대 하중 및 후관절 접촉력 등을 문헌의 사체실험 결과와 비교한 결과 매우 유사한 경향을 확인하였다. 본 연구에서 개발된 경추 동역학 모델은 앞으로 경추 사체실험 연구 뿐만 아니라 자동차 충돌시 경추 상해 분석 등의 다양한 경추 생체역학 연구 연구에 활용될 수 있을 것이다. In this study, a multibody dynamic model of the cervical spine was developed for a virtual in-vitro cadaveric experiment. The dynamic cervical spine model was reconstructed based on Korean CT images and the material properties of joints and soft tissue obtained from in-vitro experimental literature. The model was validated by comparing the inter-segmental rotation, multi-segmental rotations, load-displacement behavior, ligament force, and facet contact force with the published in-vitro experimental data. The results from the model were similar to published experimental data. The developed dynamic model of the cervical spine can be useful for injury analysis to predict the loads and deformations of the individual soft-tissue elements as well as for virtual in-vitro cadaveric experiments.
임대섭 ( Dae Seop Lim ),정은수 ( Eun Soo Jeong ),정진성 ( Jin Sung Jung ),장세헌 ( Se Heon Chang ),유승현 ( Seung Hyen Yoo ),장우진 ( Woo Jin Jang ),정시정 ( Shi Jung Chung ) 대한신장학회 2011 Kidney Research and Clinical Practice Vol.30 No.6
Paradoxical embolism is a kind of stroke caused by embolism of thrombus of venous origin through a lateral opening in the heart, such as a patent foramen ovale (PFO). Although the most frequent manifestation of paradoxical embolism is cryptogenic stroke, noncerebral paradoxical embolism is also associated with PFO. We experienced a case of cryptogenic renal infarction in a previously healthy 70-year-old man. He had no cardiac thrombus on transthoracic echocardiography and electrocardiogram revealed a normal sinus rhythm. Because it was cryptogenic renal infarction, we performed transesophageal echocardiography with microbubble test. Microbubble test using agitated saline proved the presence of right-to-left shunt and patent foramen ovale was diagnosed. We also performed lower leg doppler ultrasonogram, but there was no evidence of deep vein thrombosis. Although only the presence of a right-to-left shunt is not enough to establish the diagnosis of paradoxical embolism, it is uncommon for the source of the embolism to be identified. In this case, we concluded that paradoxical embolism is the cause of renal embolism. We report paradoxical renal embolism through PFO with review of relevant literatures.
김정혁 ( Jung Hyuk Kim ),장우진 ( Woo Jin Jang ),서정연 ( Jung Yeon Seo ),임대섭 ( Dae Seop Lim ),최진오 ( Jin Oh Choi ),박승우 ( Seung Woo Park ),김은영 ( Eun Young Kim ) 대한내과학회 2012 대한내과학회지 Vol.82 No.4
Thrombi within the aortic arch are rare, and are generally detected after cerebral, visceral, or peripheral embolization. Although the indications for treatment remain controversial, there is increasing interest in the etiopathogenesis of this rare clinical entity and the development of appropriate diagnostic and therapeutic approaches. We report a case in which a thrombus was detected in the proximal aortic arch on echocardiography and computed tomography angiography as the origin of upperextremity ischemia. This pedunculated thrombus was attached to the atherosclerotic aortic wall and was removed surgically. (Korean J Med 2012;82:476-480)
Lansoprazole 근간 3제요법과 병합 투여된 Ecabet Sodium이 Helicobacter pylori 제균율에 미치는 효과
서정연 ( Jung Yeon Seo ),김민정 ( Min Jeong Kim ),고규한 ( Kyu Han Ko ),김동현 ( Dong Hyun Kim ),임대섭 ( Dae Seop Lim ),전해리 ( Hae Ri Chon ) 대한내과학회 2011 대한내과학회지 Vol.80 No.5
Background/Aims: Ecabet sodium is used for treating gastric ulcers and gastritis. It exhibits a bactericidal effect against Helicobacter pylori by inhibiting bacterial urease activity. Thus, ecabet sodium has been suggested to improve the efficacy of the H. pylori eradication in patients with peptic ulcers. The aim of this study was to compare the H. pylori eradication rate of lansoprazole-based triple therapy versus lansoprazole-based triple therapy plus ecabet sodium. Methods: The subjects consisted of 363 H. pylori-positive patients who had undergone eradication therapy from February 2007 to February 2010. In total, 363 patients with H. pylori-positive peptic ulcer disease or symptomatic erosive gastritis received LAC (lansprazole 30mg b.i.d., amoxicillin 1.0g b.i.d., clarithromycin 500mg b.i.d.) or LACE (lansoprazole 30mg b.i.d., amoxicillin 1.0g b.i.d., clarithromycin 500mg b.i.d., ecabet sodium 1g b.i.d.) for 1 week. Successful eradication was defined as a negative 13Curea breath test 4-5 weeks after treatment completion. Results: H. pylori eradication rates were 81.4% (166/204) in the LAC group and 86.2% (137/159) in the LACE group (p=0.159). No significant difference in eradication was observed. No significant difference was observed in the side effects experienced by the patients in the two treatment groups. Conclusions: Our results suggest that adding ecabet sodium did not improve the H. pylori eradication rate significantly in standard lansoprazole-based triple therapy for H. pylori.
인간공학적 작업개선을 위한 농업인 안전 기술 동향 연구
이경숙(Kyung Suk Lee),김효철(Hyo Cher Kim),채혜선(Hye Seon Chae),김경란(Kyung Ran Kim),이수진(Soo Jin Lee),임대섭(Dae Seop Lim) 대한인간공학회 2010 大韓人間工學會誌 Vol.29 No.2
A high prevalence of farmer's work-related musculo-skeletal disorders (MSDs) have been reported in precedent studies. Risk factors - physical, chemical, biological, ergonomic risk factor etc. - in farm-work were identified by previous studies. To prevent farmers from exposing to them and reduce, Agricultural Safety Technology were introduced and used on farm. The purpose of this study is to review and summarize the agricultural safety technology on farm in Korea. According to strategy principles, this technology is classified as four criteria - workload reduction by reducing awkward posture, workload reduction by using manual material handling aids, Comfort improvement by protecting worker from hot, cold environment and work efficiency improvement by workplace redesign and cultivation modification. This technology includes transporting tools, working cloth, personal protective equipment, and pesticide-proof Clothing. Anthropometric study of Korean farmers was also carried out to support the development of equipment and clothes. In long terms, it needs to precaution activity from risk factors by using cultivation modification and working improvement. Although working condition gets better and workload reduce by this technology, it required customized safety technology in each crops - rice cultivation, horticulture and livestock farming. And farmers should use the assistive technology and participate voluntarily in ergonomic intervention program.
장애체험활동 후 "또래인터뷰 보고서 작성 프로그램"이 장애학생에 대한 비장애 초등학생의 수용성 태도와 활동선호도에 미치는 영향
방명애,임대섭 한국장애인재활협회 2007 재활복지 Vol.11 No.1
본 연구는 장애체험활동 후 또래인터뷰 보고서 작성 프로그램이 장애학생에 대한 비장애학생의 수용성태도와 활동선호도에 어떠한 영향을 미치는지 밝히는 것을 목적으로 하였다. 본 연구의 설계는 단일집단 사전-사후검사 설계이었으며, 연구대상은 농촌소재 일반초등학교 4학년 한 학급 학생 26명(남10, 여16)이었다. 수용성 태도 척도는 17문항으로 구성된 자기보고식 질문지(Voeltz, 1980)를 사용하여 측정하였고, 활동선호도 척도는 15문항으로 구성된 질문지(Siperstein & Gottlieb, 1977)를 사용하여 측정하였으며, 장애체험활동 후 또래인터뷰를 하고 자신의 생각과 느낌에 대한 보고서를 작성하게 하였다. 연구결과는 다음과 같다. 첫째, 장애체험활동 후 또래인터뷰 보고서 작성 프로그램이 장애학생에 대한 비장애학생의 수용성 태도를 향상시켰다. 둘째, 장애체험활동 후 또래인터뷰 보고서 작성 프로그램이 장애학생에 대한 비장애학생의 활동선호도를 향상시켰다. 셋째, 비장애학생은 장애체험활동 후 또래인터뷰 보고서 작성 프로그램이 장애학생을 이해하는데 도움이 되었다고 인식하였다. The purpose of this study was to investigate the impact of peer interview journal writing following disability experiences on non-disabled children's attitudes toward children with disabilities. The subjects were 26 non-disabled fourth-grade elementary school children. The program was conducted through 20 sessions for 5 weeks. The experiment design consisted of pre-test. intervention program(peer interview journal writing following disability experiences), and post-test. The disability experience program included disability experiences such as writing with toes, walking using a white cane, trying to understand TV programs without auditory inputs, eating candies with the hands in mittens, and so on, After experiencing disabilities, nondisabled students wrote a journal before and after interviewing friends. The study results were as following; (a) the program of peer interview journal writing following disability experiences influenced nondisabled students' attitudes toward students with disabilities positively. (b) the program of peer interview journal writing following disability experiences influenced nondisabled students' behavioral preferences for students with disabilities positively. (c) nondisabled students perceived that the program of peer interview journal writing following disability experiences was effective for changing their attitudes. The recommendations for future studies suggested on the basis of the research findings are as follows: (a) It should be figured out that effective components of the program package and (b) Various systematic strategies and programs should be developed for changing nondisabled students' attitudes toward students with disabilities.