Slurry 반응조를 이용한 퇴적준설물내 질소의 생물학적처리에 관한 연구

정연규,배범한,김용학,전제철,엄성범 연세대학교 산업기술연구소 2002 논문집 Vol.33 No.2

The eutrophication control and prevention can be accomplished through removal of the nutrients known as main contributors. However, for the case of lakes and rivers where significant amounts of the nutrients were already entered, there should be a limit on the eutrophication control. Accordingly, it is indispensable to remove the nutrients present in sediments in view of both obtaining water resources and preserving the environment, and, therefore, this study focuses on nitrogen removal among the nutrients in sediments. For nitrogen removal in sediments, nitrification and denitrification were applied as a biological removal process to a slurry reactor available for bioremediation of contaminated soils. With approx. 508㎎/㎏ of T-N concentration in the treated sediments, about 50 % of initial nitrogen concentration was accordingly removed after total 9-day operation of a 10 %-slurry reactor under oxic and anoxic conditions for 4 hrs and 2 hrs, respectively. This means that 25 % of T-N leachates in physical fractions were removed from the sediments through the nitrification and denitrification, and additional 25 % were removed under the same process after extracted from the sediments by a biological mechanism such as organic biodegradation. As a result, 20 % larger nitrogen amounts added were removed after leached from the sediments, which was probably caused by the fact that biological activity was increased by optimization of operating conditions as well as that mineralization and ammonification of organic matters in sediments were elevated by the enlarged population of microorganism after injection of organic C-sources and trace elements. The denitrification was more activated after the injection of organic C-sources and trace elements. The leaching amount of ammonium also increased steeply. The nitrification rate of the slurry reactor was 189 ng N/min·g in dry weight.

한의진단명과 진단요건의 표준화 연구 II (표준화 실례) : 2차년도 연구결과 중간 보고

양기상,최선미,최승훈,안규석,박경모,박종현,김성우,신승호,정우열,전병훈,고현,김정범,신상우,김성훈,김동희,권영규,엄현섭,장혜옥 한국한의학연구원 1996 한국한의학연구원논문집 Vol.2 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the second year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows; - differential diagnosis according to condition of body fluid, differentiation of syndromes according to the state of qi and blood, differential diagnosis according to relative excessiveness or deficiency of yin and yang(氣血陰陽津液辨證) - differentiation of diseases according to pathological changes of the viscera and their interrelation - analyzing and differentiating of febrile diseases in accordance with the theory of the six channels(傷寒辨證) The individual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name(異名), notion of diagnosis pattern, index of differentiation of symptoms and signs(辨證指標), the main point of diagnosis, analysis of diagnosis pattern(證候分析), discrimination of diagnosis pattern(證候鑑別), a way of curing a diseases(治法), prescription(處方), herb in common use(常用藥物), diseases appearing the diagnosis pattern(常見疾病), documents(文獻調査). This study was carried out on the basis of the Chinese documents and references.

Bupivacaine과 ropivacaine이 Xenopus oocyte에 발현된 HERG 전류에 미치는 영향

김국성,이규승,김효신,손숙진,이상도,김광진,전병화,김윤희,박진봉 충남대학교 의과대학 의학연구소 2003 충남의대잡지 Vol.30 No.1

Bupivacaine is an amide-type local anesthetic widely used for regional anesthesia. Ropivacaine is developed as a less cardiotoxic alternatives to bupivacaine. In the present study, we have analyzed the effects of bupivacaine and ropivacaine on HERG currents expressed in Xenopus oocytes. Bupivacaine and ropivacaine(3∼1,000μM) blocked HERG currents in a concentration dependent manner. EC_(50) was 26.1±3.1μM(n_(R) 0.65±0.04) and 43.5±7.9μM(n_(H) 0.99±0.13) in bupivacaine and ropivacaine, respectively. Bupivacaine and ropivacaine did not affect the activation and deactivation kinetics of HERG channels. However, the drugs decreased the slope conductance measured from fully activated current-voltage relationship curves. These results suggest that bupivacaine and ropivacaine have a similarinhibitory effect on HERG channels, which could be a possible cellular mechanism of LQT or ventricular arrythmia by the drugs.

절대광속 측정기와 적분구를 이용한 벌브타입 LED 램프의 광효율 측정분석

전상규(Sang-Kyoo Jeon),나종혁(Nong-Hyuk Na),김도환(Do-Hwan Kim),이현영(Hyun-Young Lee),조미령(Mee-Ryoung Cho),최용원(Yong-Woon Choi),양승용(Seong-Yong Yang) 한국조명·전기설비학회 2009 한국조명·전기설비학회 학술대회논문집 Vol.2009 No.10월

무전극 형광램프의 수명 비교 분석

전상규(Sang-Kyoo Jeon),조미령(Mee-Ryoung Cho),최석준(Suk-Joon Choi),노재엽(Jae-Yeop Rho),이세현(Se-Hyun Lee),신상욱(Sang-Wuk Shin),황명근(Myung-Keun Hwang),이도영(Do-Young Lee),양승용(Seong-Yong Yang) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월

This paper gives a comparative analysis on lifetime of the fluorescent induction lamp. We have measured and analysed optical characteristics of circular type fluorescent induction lamps, which has A and B types, to estimate lifetime. In the result of analysis on lifetime, B₁? lifetime of A and B type lamps are 466 hours and 1,595 hours, respectively.

골수염 진단에 있어서 골스캔의 유용성

전혜정,박정희,신현준,최영칠,이상천,김명규,정규병 건국대학교 의과학연구소 1997 건국의과학학술지 Vol.7 No.-

Bone scintigraphy using technetium is a simple, safe and accurate method in the diagnosis of osteomyelitis. Bone scan can find the exact site of osteomyelitis and the needle aspiration and surgical drainage. Bone scan is the choice of diagnostic method for determining bone infection in children who are unable to communicate of in those whose signs have been modified by previous inadequate antibiotic therapy. We had the eleven patients whose symptoms are suspicious bone infection taken both technetium bone scan and plain radiographs from March 1996 to April 1997. We analyzed the images of bone scans and plain radiographs retrospectively and studied that how useful the bone scan is. Among eleven patients, the bone scan showed all positive finding of bone infection, but the plain radiographs revealed normal finding in six cases, soft tissue swelling in three cases, bone destruction in one case and periosteal reaction in one case. Conclusively, bone scan is very useful in localization of exact lesion and early detection of osteomyelitis.

Characteristics and Influencing Factors on Recuperators with Work-related Musculoskeletal Disorders

Kyoo Sang Kim,Hee Gyeong Jeon,Day Sung Kim 대한인간공학회 2012 大韓人間工學會誌 Vol.31 No.5

Objective: This study aims to investigate subjects in recuperation to identify the following factors with regard to work-related musculoskeletal diseases: diagnosis in the context of occupational and environmental medicine; assessment systems for judging work-relatedness; recuperation management; workplace management; prevention programs; and care after returning to work. This study intends to analyze differences between subjects and determine what characteristics of subjects account for the differences. Method: A survey was administered to 1,664 workers who were approved by the Korea Worker"s Compensation & Welfare Service between 2003 and 2005 for recuperation due to work-related musculoskeletal diseases. The data of 229 subjects who responded the survey questionnaire related to recuperation were analysed. Results: According to the results, demographic, occupational, and musculoskeletal disease-related factors were significant. The demographic factors included gender, age, marital status, and region, while occupational factors included working period, work type, size of workplace, and industry type. The factors related to musculoskeletal diseases were the part of the body in pain, the tissues in pain, and the existence of dysfunction. The above factors were associated with statistically significant differences in the following areas: revealed symptom period, symptoms-diagnosis period, and application for recuperation approval periods; diagnosis and care institutes for recuperarion; the state of patients (body parts in pain, tissues in pain, and existence of dysfunction); return to work; and care after returning to work. Conclusion: The results of this study can serve as basic data in setting priorities for prevention programs for work-related musculoskeletal diseases and selecting target groups.

Molecular Epidemiology of Legionella pneumophila Isolated from Bath Facilities of Public Establishments in Seoul

Jeon, Su-Jin,Jung, Ji-Hun,Jin, Young-Hee,Lee, Jae-Kyoo,Oh, Young-Hee,Choi, Sung-Min 대한미생물학회 2011 Journal of Bacteriology and Virology Vol.41 No.4

The genus Legionella is common in aquatic environments. Some species of Legionella are recognized as potential opportunistic pathogens for human, notably Legionella pneumophila that causes Legionellosis. During the summer season between June and August in 2010, we isolated 61 L. pneumophila from the bath facilities of public establishments of 25 wards in Seoul. The existence of 16S rRNA and mip gene of L. pneumophila was confirmed in the genome of the isolated strains by PCR. Among the 61 strains of L. pneumophila, thirty three isolates belong to serogroup 1 (54.1%), 13 isolates were serogroup 6 (21.3%), 9 isolates were serogroup 5 (14.8%), 3 isolates were serogroup 3 (4.9%), and 3 isolates were identified in serogroup 2 (4.9%). On pulsed-field gel electrophoresis (PFGE) analysis using SfiI, genetic types of L. pneumophila were classified into 8 (A to H) patterns by the band similarity with excess of 65%. Our results suggest the existence of serological and genetic diversity among the L. pneumophila isolates.

늑골병변과 골 스캔: 소견 및 유용성

전혜정,박정희,신현준,최영칠,이상천,김명규,정규병 건국대학교 의과학연구소 1997 건국의과학학술지 Vol.7 No.-

We analyzed the image findings of bone scan and plain radiographs of 23 patients. The thirteen patients were traumatic rib fractures. Five patients were metastatic rib tumors. Five patients were rib caries. Differential diagnostic point were discussed by using bone scan images. Although 50 lesions were seen as increased uptake in the bone scan, only 30 lesions were found in the plain radiographs. In metastatic tumors, multiple lesions are scattered over the whole body. In fracture cases, the lesions are located one by one in orders, multiple increased uptake lesions are found in the same rib. In the caries cases, rib lesions were easily found by bone scan rather than plain radiographs. Increased uptake is also noted in the soft tissue abscess pocket adjacent to rib. Bone scan is very useful in the early detection of bone abnormality, even the etiology of bone lesion by analysis of images of bone scan.

요추간판 탈출증 요양자의 요추 기능장애 평가

김규상(Kyoo Sang Kim),김대성(Day Sung Kim),전희경(Hee Gyeong Jeon) 대한인간공학회 2012 대한인간공학회 학술대회논문집 Vol.2012 No.11

Objective: 국내 작업관련성 근골격계질환의 산업의학적 진단(진단도구, 진단기준, 평가방법 등), 작업(업무)관련성 평가체계, 요양관리(요양기관, 요양기간, 요양연장, 재요양, 전원요양, 추가상병 등), 사업장의 산업의학적 관리체계, 예방프로그램 및 작업복귀 후의 사후관리 등에 대해 요양 근로자의 정확한 실태를 파악하고, 조사 대상자의 특성에 따라 어떠한 차이를 보이는지 분석하고자 하였다. Method: 2003-2005 년 산재보험에 의해 작업관련성 근골격계질환으로 요양 승인된 근로자 1,664 명에게 설문을 실시하여 그 결과를 조사 분석하였다. Results: 조사 대상 근골격계질환 요양자의 인구사회학적 요인인 성별 분포 특성(남성, 여성), 연령 분포 특성(30 대 이하, 40 대, 50 대 이상), 결혼 여부(기혼, 미혼), 지역별 분포 특성(서울/경인지역, 충청/호남지역, 영남지역), 직업적 특성인 근골격계질환 요양자의 근무기간(10 년 미만, 10 년 이상), 근무형태(정상 근무, 교대/시간제 근무), 사업체의 규모(1000 인 미만, 1000 인 이상), 사업체의 업종(제조업, 비제조업), 그리고 요양자의 근골격계 질환 특성인 이환 신체부위(상지, 허리, 하지), 이환조직(연부조직, 추간판), 기능장애 유무에 따라 근골격계질환 요양자의 증상/진단/요양 승인 및 요양기간(증상 발현기간, 증상-진단기간, 최초 진단-요양 승인기간, 요양 신청-승인기간, 요양기간), 근골격계질환 진단/요양 기관(최초 진단 의료기관, 진료과목, 요양 치료기관), 근골격계질환 요양자의 증상/질환 실태(신체 부위, 이환조직, 기능장애 여부), 요양자의 작업(복귀)관리(수행작업, 종결후 현 건강상태, 작업수행의 어려움, 예방관리프로그램의 참여, 가정내 보존 치료), 상병관리실태(추가상병 신청, 요양기간 연장, 전원요양 신청, 최초 진단/현 요양기관의 동일성, 작업복귀후 재요양, 요양 신청전근골격계 증상 치료력, 치료기관과 그로 인한 병가)에 있어 통계적으로 유의한 차이를 나타내었다. Conclusion: 이 연구 분석결과는 작업관련성 근골격계질환의 예방 및 사업의 우선순위와 표적집단을 결정하는데 기초자료로 활용하고자 한다.