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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.
수서 환경독성 평가와 어류 Cytochrome P450 1A(CYP1A) 유전자
윤석주,김일찬,윤용달,이재성 한국환경생물학회 2003 환경생물 : 환경생물학회지 Vol.21 No.1
CYP1A 유전자는 cytochrome P450 약물대사효소에 속하며 다이옥신 등의 내분비계 장애물질에 의해 농도 의존적으로 유도되어 환경오염물질에 의해 유도되는 특성을 이용하여 환경오염물질에 대해 반응하는 생물체의 유전자 발현 변화 뿐만 아니라 이를 토대로 특정지역의 환경오염에 관한 정보를 얻을 수 있다. 본 논문에서는 수서환경오염과 관련하여 CYP1A 유전자의 응용성을 다 각도로 논의하였다. The CYPlA gene is one of Cytochrome P450 drug-metabolizing enzymes with dose-dependant manner of gene expression and is useful to get the information of alterations on gene expression upon environmental contaminants as well as the biomarker of environmental contamination at the specific places. In this report, we further discuss the usefulness of CYPlA gene in relation to aquatic environmental contamination at several aspects.
한윤범,이제호,최형준,손흥규,김성오,송제선,최병재 대한소아치과학회 2009 大韓小兒齒科學會誌 Vol.36 No.2
외상에 의한 치아의 함입은 치아가 치조골 방향으로 변위되어 있는 상태이다. 함입성 탈구는 다른 유형의 탈구성 손상에 비하여 드물게 발생하고, 낙상에 의한 경우가 많으며, 소녀보다는 소년에서 호발하는 것으로 보고되었다. 치아가 함입되었을 때, 치수괴사나 유착, 치근흡수, 근관폐쇄, 변연골 상실 등과 같은 합병증이 발생할 수 있으며, 치아 경조직과 치아 지지조직 등의 손상이 동반되는 경우가 흔하므로, 예후를 예측하고 정확한 진단 및 치료계획을 수립하는데 어려움이 있다. 함입된 치아의 치료는 자발적으로 재맹출하기를 기다리거나, 교정적 견인 또는 외과적으로 재위치 시키는 방법이 있다. 이 증례는 외상으로 인하여 상악 좌측 중절치가 함입되었다는 주소로 내원한 6세 7개월 된 여아에서, 함입된 치아의 자발적인 맹출을 기대하였으나 맹출이 되지 않아서, 교정적으로 견인하여 맹출시킨 경우로 양호한 결과를 얻었기에 이를 보고하는 바이다. Traumatic intrusion is a type of injury that involves axial displacement of a tooth toward the alveolar bone. Its occurance is relatively rare compared to other types of luxation in permanent dentition. It is more common in boys than in girls, and most common etiology of intrusion is fallen down. Various complication may occur following traumatic intrusion, such as pulp necrosis, root resorption, pulp obliteration and marginal bone loss. In addition, traumatic intrusion is commonly combined with hard or soft tissue injuries. Therefore, it is difficult to establish proper treatment plan. Choice of treatment for an intruded tooth by trauma include waiting for spontaneous re-eruption, orthodontic repositioning, and surgical repositioning. In this case, we repositioned the intruded central incisor using orthodontic traction, in a six-year old girl, which failed to re-erupt spontaneously.
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.
김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1
The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.
인간의 청각특성을 이용한 잡음 혼입시의 음성인식에 관한 연구
심재성,윤태성 國立 昌原大學校 産業技術硏究所 1992 産技硏論文集 Vol.6 No.-
In this study, computational model for peripheral auditory system is constructed and recognition experiments for 5 Korean vowels and 10 Korean digits, which are added with Gaussian white noise quantitatively, are executed in order to investigate the adaptibility of human auditory system in noise. Also, for the purpose of objective comparison, the recognition tests are performed by extracting LPC cepstrum coefficients for the same speech data.
장재혁,원경준,권세훈,하성일,권용은,이승일,윤성호 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2
A 38-year-old man with dyspnea admitted to the emergency department after exposure to hydrochloric acid in pharmaceutical product manufacturer. Crackle was auscultated in both lung fields in initial physical examination. Chest radiograph showed consolidation and diffuse parenchymal infiltration in both lung fields. Arterial blood gas analysis showed severe hypoxia. This patient was treated by mechanical ventilation, corticosteroid, antibiotics and bronchodilators and was improved completely in a week after the admission. The authors report a rare case of chemical pneumonitis caused by hydrochloric acid.
이종삼,윤재만,전중기,고성경 대구대학교 인문과학연구소 2007 人文科學硏究 Vol.30 No.-
We investigated that the effect of passive smoking on percent oxygen saturation (%SaO2) and blood pressure (BP). Total 16 healthy male subjects were recruited, and subjects were allocated into one of two groups: either smoker group (n=8) or non-smoker group (n=8). All subjects were stayed in sealed laboratory room until all the experiment completed. Each subject in smoker group have smoked every one hour, and %SaO2 in arterial blood, BP, heart rate (HR), lung vital capacity (VC), and blood glucose and lactate were measured. BP was increased more rapidly in non-smoker group than smoker group during experimental period. SaO2 was significantly lower in non-smoker group compared to smoker group. There was no significant change in HR, and blood glucose and lactate. It was not also significantly changed in VC. In conclusion, passive smoking can deteriorate in %SaO2 and BP in nonsmoker healthy people, and smoking should be prohibited in any public area as well as room in which multi-persons work together.
양광영,윤성운,김재열,김인권 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.2
This paper presents experimental and analytical studies of ultimate strength of [30_2/-30_2/90]_s carbon/epoxy laminates with free-edge delamination under uniaxial tension. We performed tensile test for laminates with Telflon inserted on interfaces to simulate initial free-edge delamination. The experiment reveals that extensional stiffness of the laminate decreases by the initiation of the delamination, and that strength of the laminate without delamination is smaller than that of the laminated with delamination. Generalized quasi-three dimentional finite element analysis, which employs energy release rate and maximum stress criteria, predicts the ultimate strength of the laminates with sufficient accuracy.
중대산업사고 예방을 위한 종합위험관리체제(IRMS) 구축에 관한 연구
권혁면,성대현,김재현,임대식,김기영,편무욱,문일,고재욱,이영순,윤인섭 한국안전학회 2003 한국안전학회지 Vol.18 No.3
The Process Safety Management (PSM) by the Law of Industry, Safety and Health has been performed for preventing major accidents of chemical plants since 1996. In terms of preventing chemical accidents more precisely, it is essential to develop a tool for quantitative risk assessment. For this, KOSHA (Korea Occupational Safety and Health Agency) developed an Integrated Risk Management System (IRMS) . The system is designed to assimilate data on chemical plant hazards from external database, to integrate these data with location information (topographic and demographic), and to make them user-friendly accessible. The system consists of several main functions: display of five major Korean petrochemical complex layout, display of equipment layout with its information utilizing the external database, zonation of the hazard effected area with consequence analyses, the most probable accident scenario generation, accident/incident database and calculation of frequency of accident using equipment reliability database, etc. The highlight of IRMS is to provide the risk contours using GIS(Geographical Information System) technology. IRMS is intended to manage hazardous installation more systematically and effectively, to reduce the number of accident remarkably, further minimizing production loss in the plant. The system is now under application to about 500 PSM sites as well as and emergency authorities in Korea by KOSHA (Korea Occupational Safety and Health Agency)