서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

휴대폰 카메라용 자동초점 구동기의 충격해석

이성민,김봉석,송준호,이수훈,이혜진,이문구,송준엽,이창우 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

Recently, the robustness against daily impact is important according to portablization and downsizing of mobile electronics. Especially, almost parts of cellular phone should undergo drop test when they fall 1.5 m above ground. This test simulates the case when cellular phone slips through user's fingers while he is talking on the phone. This paper studies a drop test of auto focusing (AF) actuator for camera module in cellular phone. This component is composed of voice coil motor (VCM) as an actuator and leaf spring as a guide and suspension. The leaf spring's deformation is essential for the test because its permanent distortion disables the focusing, and then, a high quality photograph cannot be obtained. Up to now the drop test has been carried out after fabricating real AF actuator. We propose a dropt test model which simulates the drop test based on finite element analysis. This model makes us enable investigate the stress acting on the clamping and curved parts of leaf spring. Stress over Von Mises criterion lets the spring deformed permanently, and then AF actuator malfunctioned, It helps us to design and modify AF actuator without manufacturing the real product. And also, it saves the time and cost for the development of new products.

GC-ECD를 이용한 유기염소계 및 Pyrethroid계 농약 동시 분석법

김우성,이선화,김재이,정지윤,이명자,박영채,이영자,정성욱,이봉헌,박흥재 한국환경과학회 2003 한국환경과학회지 Vol.12 No.4

Pesticides were extracted from samples with 70% acetone and methylene chloride in order, and then cleaned up via open-column chromatography apparatus packed with florisil, and finally analyzed simultaneously the organochlorine and pyrethroid pesticides using GC(ECD). An ultra-2 fused silica capillary column was used to separate and identify the products. The resolution between the last isomeric peak of cypermethrin(59.987min) and the first isomeric peak of flucythrinate(60.043min) was not satisfactory. The last isomeric peak of fenvalerate(62.344min) and the first isomeric peak of fluvalinate(62.397min) were overlapped. Recoveries of soybean sample for the most pesticides were 73.3% to 102.4%. Detection limits were between 0.004 and 0.063 ㎍/㎎ when this method was used.

매크로/마이크로 레벨 볼트 결합 구조물에서의 실험적/해석적 방법을 통한 시스템 특성 비교

김봉석,이성민,이문구,이수훈,Jun Ni,송준엽,이창우,하태호 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-

As the micro technology and miniaturization of a structure and component in the last couple of decades have been concretely realized, the understanding of structural and dynamic characteristics and prediction of dynamic behavior are indispensable to the miniaturized structures and micro machines. This paper shows the effect of dynamic characteristics in bolt-jointed structures by comparing natural frequencies and mode shapes between macro and micro-scale beams through experimental modal analysis and finite element analysis with a1 8 test models by materials, by size, and by joining condition; that is, SS41 and A16061-T651, micro and macro, and monolithic beam and bolt-jointed beam.

GIS 및 지진취약도 분석기법을 활용한 창원시 교통망의 내진위험도 분석

이형진,김성훈,최승용 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

Recently seismic fragility analysis method has been widely used for the seismic probabilistic risk assessment of infrastructures such as nuclear power plants, buildings and bridges because of its probabilistic characteristics. Furthermore, this technique has been applied to large-scale social system consisted of each infrastructures by combing GIS. In this paper, the applicability of this technique to domestic infrastructure system. Example studies were performed about Changwon city. Nonlinear time history analysis, with a maximum likelihood approach were analysis of whole infrastructure systems. The results shows that it can be very useful to predict seismic probabilistic risk assessment of this domestic transportation network. However, it is also shown that further studies such as more suitable damage criterion to domestic structure and precise nonlinear analysis techniques should be developed to predict more precise results.

Junctional Rhythm을 보인 한국형 출혈열 1례

이성원,이수훈,최대현,손영기,차광수,손춘희,정원태,김성은,김종성 동아대학교의과대학 1997 동아의대학술지 Vol.9 No.1

두개저 골절 환자의 임상적 고찰

이용성,송시헌,김성호,김관태,김윤 대한신경외과학회 1994 Journal of Korean neurosurgical society Vol.23 No.9

The authors analyzed 147 cases of basal skull fracture which were treated in the Department of Neurosurgery, Chungnam National University Hospital from Janwuy 1989 to December 1992. These fractures are difficult to diagnose by ordinary X-ray examination and are freguently inferred by clinical signs. The clinical features and radiological findings were reviewed. The results of the analysis are summarized as follows 1) The basal skull fractures were more common in men than women-the ratio being 6 1 1. 2) In decreasing order of cause of basal skull fractures were traffic accident~(77%), fall down, assault and slipping. 3) The minor head injury, Glasgow Coma Scale Score(GCS) of 13 to 15, was 79 cases(54%), the moderate head injury 40 cases(27%) and the severe head injury 18 cases(1996). 4) In decreasing order of clinical features were otorrhea(71 I) rhinorrhea(4856) and raccoon eye(33%) etc. 5) In decreasing order of the combined pathologies were skull fracture(55I 1, subdural hema-toma(l7%), epidural hematoma(l6%) and intraerebral hematoma(l2I) etc. 6) The facial nerve, vestibulocochlear nerve and optic nerve were the most commonly injured cranial nerve. 7) CSF leakage was noted in 139 cases and among them immediate type was far more common(%%) than the delayed type. 8) The incidence of meningitis was 5.4% and most of them associated with CSF leakage and the prophylatic antibiotic treatment has no effect to decrease infection rate. 9) In decreasing order of the frequency associated injuries were facial bone fracture (47%), clavicle fracture(19%), lower extremitics fracture(9%) and upper extremcties fracture(7%) etc.

모더니티의'이면'으로서의 라틴 아메리카

이성훈 한국외국어대학교 외국문학연구소 2003 외국문학연구 Vol.- No.15

The debate between Modernity and Post-Modernity, which happened during the latter part of the last century, broke our trust in reason, progress, and scientific world-view and provided a new knowledge horizon of history and human through various theoretical guidance. The debate on Modernity, especially debate on how to understand Post-Modernity in the area of literature, brought numerous dispute in the domestical academic society. At the age of new paradigm, century of sensibility and consumption rather than century of theory and ideology, this paper re-examined the issue of Modernity: last century's debate that nobody seems to remember today. In this context, this paper reviewed the eurocentristic nature of Modernity from its theoretical starting point, Latin America. The questions addressed in this paper are as follows: What kind of role is Latin America playing in the establishment of Modernity? On what kind of mechanism is 'coloniality of power' operating in the colonial reign of Latin America? Finally, what kind of truth is a myth of Europe functioning as a core unit of Modernity hiding? Examining the role of Latin America in relation with Modernity debate can show that even Post-Modernity itself, which tries to point out and overcome the limitations of Modernity, is operating within the Eurocentristic framework in a way. Especially, examining how the logic of Modernity is operating inside of Latin America, where western Modernity formed its direct physical basis, will be able to provide some suggestions in relation to our situation. At the age of globalization, taking Modernity as an issue and reviewing the geopolitical position of Latin America in this matter can also play a very important role in understanding Latin American culture. In other words, without understanding the logic of how Modernity operates in Latin America, it is practically, impossible to build the theoretical basis that can overcome the hegemony of neoliberalism or globalization which is the most modern and powerful form of Modernity. Through this process, this paper expanded the context of Modernity debate, reorganized the Latin American culture through Modernity debate in Latin America, and explored the theoretical foundation which can be used for a new interpretation of Modernity.

천측두동맥에 발생한 가성동맥류 1예

이광태,김성호,송시헌,김관태,김윤 대한신경외과학회 1992 Journal of Korean neurosurgical society Vol.21 No.4

The authors report a case of false aneurysm of the superficial temporal artery which manifested after operation for FCCD. An aneurysm of the superficial temporal artery is a rare disease. In collected literature, the incidence of superficial temporal artery aneurysms ranged from 0.5 to 2.5 percent of all aneurysms for which surgery was performed. False aneurysm should be suspected when a mass, which may or may not be pulsatile, appears in the scalp region after recent trauma. Troublesome(but not life-threatening) bleeding may occur if the lesion is unrecognized, and an attempt is made to "shell it out" as though it were an epidermal inclusion cyst.

오존을 이용한 하수슬러지의 감량화와 안정화

이창근,황은주,강성재,빈정인,이병헌 한국물환경학회 2004 한국물환경학회지 Vol.20 No.3

In this study, ozone was adopted for the reduction and stabilization of waste sludge from the municipal sewage treatment plant. The waste sludge used in the experiments was primary sludge, excess sludge and a mixture of the two. The sludge cells and flocs were disrupted by ozonation resulting in the reduction of TSS and VSS concentrations. In the case of the primary sludge with a concentration of 20 gTS/L, the TSS and VSS concentrations were reduced 28%, 33% and the TCOD concentration was reduced 20% respectively. The consumption of ozone was 0.18 gO₃/gSS. In the case of the excess sludge with a concentration of 7.5 gTS/L, the TSS and VSS concentrations were reduced 37%, 41%, and the TCOD concentration was reduced 19% respectively. The consumption of ozone was 0.33 gO₃/gSS. In the case of the mixed sludge of 9.3 gTS/L, the TSS and VSS concentrations were reduced by 45%, 53%, and the TCOD was reduced 26% respectively. The desirable consumption of ozone was 0.27 gO₃/gSS. As ozonation proceeded, the level of SCOD increased due to the release of intracellular materials. However TCOD was reduced due to mineralization resulting from the transformation of organic materials to inorganic materials.