기저질환이 없는 사람에서 발생한 Campylobacter fetus에 의한 재발성 심내막염 1예

전재범,정진원,김성혜,송문희,오형철,안성기,최상호,김남중,김양수,우준희,류지소 대한감염학회 2004 감염과 화학요법 Vol.36 No.6

C. fetus 심내막염은 드물게 발생하는 질환으로 주로 면역능이 저하된 환자에서 발병하고 대동맥판을 침범하는 경우가 많으며 적절한 치료가 되지 않을 경우 치사율이 높다. 저자들은 기저질환이 없던 69세 남자에서 C. fetus 심내막염을 경험하였기에 문헌고찰과 함께 보고하는 바이다. 환자는 발열로 내원하여 시행한 혈액배양 검사상 C. fetus가 동정되었고 경식도 초음파 검사상 삼첨판에 증식증이 발견되어 심내막염 진단하에 ceftriaxone에 이어 meropenem으로 총 4주간 항생제를 투여받고 호전되었다가 한달 후 다시 재발하였고 판막부전 소견 진행하여 삼첨판 치환술을 시행받고 전신상태 호전되어 퇴원하였다. Campylobacter fetus is a rare cause of endocarditis. To date, only about 30 cases of C. fetus endocarditis have been reported mainly in the elderly with chronic underlying illnesses. Most cases showed tendency to involve aortic valve. This report describes a case of native tricuspid valve infective endocarditis in a 69-year-old man without any underlying disease. Despite adequate antibiotic therapy for 4-weeks, endocarditis recurred and leading to surgical valve replacement.

한국인 직무 스트레스 측정도구의 개발 및 표준화

장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.

분말야금법으로 제조된 2124AI 합금의 빠른변형률속도 초소성 거동

金祐塡,張勝彦,南勝義,金亨駿 弘益大學校 科學基術硏究所 1999 科學技術硏究論文集 Vol.10 No.2

Ceramic whisker or particulate reinforced aluminum based metal matrix composites show high room temperature strength, but their low formability makes it difficult to form into desired shapes. By superplastic deformation, their formability can be improved and it is possible to produce complex parts for automotive aerospace simultaneously instead of many near-net-shape forming operations. This study has been carried out to investigate the high temperature mechanical and superplastic properties in 2124Al alloy. SRC(Strain Rate Change) tests show that the value of n(stress exponent) is around 3 at high strain rate and above 5 at low strain rate. It was turned out that 212Al matrix alloy exhibited reasonably high tensile elongation above 250% with the broad range of temperature and strain rate. Especially, at 550℃, both materials showed very high elongation failure up to 700% for 2124Al alloy. The strength comparison is lower strength then 2124Al composites were obtained that the composite is lower strength than 2124Al alloy at superplastic region.

19세기 박람회의 공간구축에 관한 연구

김형준,전영훈,김광현 대한건축학회 2003 대한건축학회논문집 Vol.19 No.8

This study is to examine the spatial construction found in expositions in the 19^(th) century. The purpose is to understand architecture in the 19^(th) century as the origin of the modern architecture in the 20^(th) century, and to reveal the authenticity of modern spaces through spaces of expositions. Expositions in the 19^(th) century are one of the leading architectural themes in that age, Having a vast influence on entire Europe, they are new modern institutional buildings emerging with new modern technologies and culture. This study analysis expositions through three viewpoints in the modern institutional buildings which were 'time', 'threshold' and 'perception'. As a result, spatial construction in expositions were formed by things, people and space which were related to the three viewpoints. The phenomenon and the process in the spatial construction of exposition are related to the modern architecture, and also relations in the space of exposition are extended to the city and the architecture in the 20^(th) century. Therefore, the modern institutional buildings in the 19^(th) century will be studied as to reveal identity of the modern architecture and its modernity.

포토몽타쥬에 나타난 미스 반 데 로에의 기술인식

김형준 제주대학교 공과대학 첨단기술연구소 2006 尖端技術硏究所論文集 Vol.17 No.2

Mies van der Rohe was attracted to the spreading effect of the modern media-work on culture from beginning of his career, and utilized it systematically throughout his life. It includes image buildup works such as photo-montage, documents fabrication, modeling, publications, exhibitions and so on. In the early stage of the work, he had concentrated on the notification of specified messages even than the realization of the projects. But his strategy was different from those employed by other avant-gardes, since it entailed a symbolization of modern man's disintegrated life and its recovery rather than a fragmentation of meaning which results from the destruction and reproduction of the object. About the time of 1930', he had strengthened the relationship of the composition elements and spatial integration for the rationalization of system as a whole. As a consequence of it, birdeye-view and interior perspective was widely used and human entered on the stage. And with These mutations, his view moved from outside to inside and formed the theme of 'the exterior structure and the inside surface'. After 1940', he had struggled to acquire the constructivity of architecture which combines the essence-supplement, the structure-ornament, and finally arrived at the peak of paradoxical project which aimed to overcome the fragmentation and disjunction of modern life. So, his work is elucidated as an cons-tructional strategy for the reconstruction of modern world and in this point it passed over the mere virtual world.

하우스 밴드의 설치방법 개발

김진환,김형준,유복상 충북대학교 농업과학기술연구소 2001 農業科學硏究 Vol.18 No.-

Labor saving, simple and fast instration of hawse band is necessary for house management. Therefore, this study was conducted to evaluate the cord materials(rice transplsnting string, pack sack band and drip irrigation nozzle and house band) and installation methods(string exchange, both side throwing, ball throwing and and both side throwing) of house band. Both side throwing + Ball throwing) of house band. Both side throwing of drip irrigation nozzle appeared to be the fatest method for house band installation. Attachment of tennis ball of 160∼ 180g at the both end of drip irrigation nozzle enabled fast band installation in both side throwing and only one man is able to install the house band

19세기 유럽 극장의 구축요소와 성격에 관한 연구

김형준,김광현 대한건축학회 2004 대한건축학회논문집 Vol.20 No.4

This study is to examine the elements of construction and their character in the 19^(th) century's european theaters. The purpose is to understand architecture in the 19^(th) century as the origin of the modern architecture in the 20^(th) century, and to reveal the authenticity of modern architecture through european theaters in the 19^(th) century. European theaters in the 19^(th) century are one of the leading architectural themes in that age. Having a vast influence on entire Europe, they are new modern institutions emerging with new modern technologies and cultures. This study analysis european theaters through 19^(th) century's society and its subjects which are people in 19^(th) century. As a result, construction of european theaters were formed by several elements which were related to architectural, social, technical environments. The major elements of construction in the 19^(th) century's european theaters were ‘perception’, ‘boundary’, ‘system’. The elements and the process in the construction of theaters are related to the modern architecture, and also relations in the theaters are involved to the architecture in the 20^(th) century. Therefore, the modern institutions in the 19^(th) century will be studied as to reveal identity of the modern architecture.

사이클로이드 감속기구의 역전 방지에 관한 연구

김형준 서울産業大學校 2000 논문집 Vol.51 No.1

The overcentrode cycloidal gearing system has found application in planetary gear trains with difference of number of pinion gear teeth equal to one. This system is used in various application because of its compact size, less backlash, and high efficiency. But the manufacturing of the tooth profile of equidistant curve of epicycloid requires special machining technique. The use of special tooth profile such as trapezoid shape in the cycloidal gearing system makes possible mass production with the fine-blanking press technology. This gearing system with the simple tooth profile requires self-locking for its application, for example automobile seat back control system. This study finds the self-locking conditions and the transmission efficiency of the cycloidal gearing system with the trapezoid shape tooth profile by kinematic analysis and static force analysis.

중추성 요붕증이 동반된 랑게르한스 세포 조직구증 1예

김진호,문준성,문선중,이지은,최재원,은미정,천경아,조인호,윤지성,원규장,이경희 신덕섭,이형우 영남대학교 의과대학 2005 Yeungnam University Journal of Medicine Vol.22 No.2

Central diabetes insipidus (DI) is a syndrome characterized by thirst, polydipsia and polyuria. Langerhans cell histiocytosis is one of the etiologies of DI. Recently we experienced a central DI associated with Langerhans cell histiocytosis. The 44 years old female patient complained right hip pain polydipsia and polyuria. We carried out water deprivation test. After vasopressin injection, urine osmotic pressure was increased form 109mOsmol/Kg to 327mOsmol/Kg (300%). Brain MRI showed a thickened pituitary stalk and at hot bone CT.CT guided biopsy revealed abnormal histiocytes proliferation and abundant lymphocytes, The final diagnosis was central DI associated with systemic Langerhans cell histiocytosis invading hip bone, L-spine and pituitary stalk. Desmopressin and etoposide chemotherapy were performed to the patient.

하이드라진에 대한 물리화학적 특성과 분해 특성 조사

김상대,안현경,윤형준,이인형 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.2

Hydrazine is a weak base and strong reducing agent in the aqueous solution and is primarily utilized as a high-energy rocket propellant and an oxygen scavenger in boiler or feedwater. The objective of this study was to investigate the physicochemical properties and reactions of hydrazine and the catalytic and thermal decomposition by the emperature change. Hydrazine was fast decomposed with the of lower activation energy and at the higher temperature.