Palmes Tube를 이용한 지역별 NO₂농도와 직종별 NO₂개인 폭로량에 관한 연구

김준연,박순우,김동일,장봉기,정경동,김두희,홍대용,정갑열,김용규,이종섭,유일수,김정만 동아대학교 의과대학 부설 산업의학연구소 1992 산업의학연구소 논총 Vol.- No.1

Indoor air quality is important to human wellbeing because people their spend much of time indoors. Current efforts to reduce ventilation rates in building may conserve energy but may also passibly empair human health and welfare through increased levels of indoor contaminants. Nitrogn dioxide( NO₂)has been regarded as one of the important indoor air pollutants. This report updates the assessment of NO₂concentrations at indoor & vehicle road and personal NO₂exposure levels by job groups in four urban cities. NO₂concentrations were measured using the diffusion tube method on 671 subjects in four cities(Pusan, Taegu, Chinju. Iri) from Dec. 1988 to Feb, 1989 and from Dec. 1989 to Feb. 1990. The results of the study obtained were as follows. Ⅰ. Indoor & vehicle road NO₂levels 1. The mean NO₂level was 37.8±19.6(8∼189)ppb and the highest with 42.2±20.5ppb at Bus & Taxi. 2. The NO₂levels by area were as follows: Pusan city, 38.3±20.3ppb: Taegu city, 41.1±17.6ppb: Chinju city, 33.0±19.4ppb: Iri city, 35.8±20.6ppb. 3. The site of the highest NO₂level in Pusan, Taegu, Chinju and Iri city were as follows: Bus & Taxi, 45.4ppb: Vehicle road, 50.8ppb: Bus & Taxi, 37.5ppb: Bus & Taxi. 45.0ppb. Ⅱ. Personal NO₂exposure level 1. The mean level of personal NO₂exposure was 42.7 ±23.1(6∼145)ppb and the highest with 54.0±25.5ppb at office workers. 2. Personal NO₂exposure levels by area were as follows: Pusan city 44.8±20.2ppb: Taegu city, 50.6±24.3ppb: Chinju city, 47.1±23.2ppb: Iri city, 48.0±27.0ppb. 3. The job group of the highest personal NO₂exposure level in Pusan, Taegu, Chinju and Iri city were as follows: Office workers, 50.3ppb: Bus & Taxi drivers, 63.8ppb: Office workers, 59.8ppb: Office workers, 60.0ppb.

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.

독성물질의 세포사 기전 및 세포사 유발물질의 검색법 개발에 관한 연구(Ⅰ) : 독성물질로 인한 파킨슨병 모델에서의 세포사 기전 연구 Study on the cell-death mechanisms of toxin-induced parkinsonism

강태석,김종민,서경원,김영옥,김준규,오재호,이윤동,김규봉,오정자,송연정,임종준,전범석,문전옥,최광식 식품의약품안전청 2000 식품의약품안전청 연보 Vol.4 No.-

MPTP 독성물질이 도파민성 신경세포에 선택적으로 작용하여 산화성 손상에 의한 신경세포사를 일으키는 것을 이용하여 파킨슨병의 동물모델을 만들고, 이를 통해서 아폼토시스를 비롯한 포사의 기전에 대한 연구 및 너코틴의 신경세포 보호효과 여부를 판정하는 실험을 병행하고자 하였다. 파킨슨꾐의 동물모델을 MPTf 독성 물질을 이용하여 확립하였으며, MPTP(30mgag, i.p.)를 투여한 후 1, 2,3, 4, 5일째 흑질 조직을 채춰하여 tarm로 박걸하여 tyrosine hydroxylase 면역조직화학염색을 수행하여 cell countif우한 결과, control은 57.635ce11s, 1일째 친.OfDells,2일째 57.9±6cells,3일릴 없.3±죠ells, 4일째 49.0츠3cells, 5일째 39.4±Scells료 4, 3일째 뚜렷한 신경세포 수의 감소를 보였다. 신경세포사 기전 규명을 위한 아폼토시스 분걱에서는 벼PTP 투여 후 1, 2, 3, 4, 5일째 조직을 채취하여 Hoechst staining, TUNEL staining을 수곡하였는데 양성 반응을 보인 신경세포는 관찰되지 않아. 아폼토시스로 인한 세포사가 관찰되지 않았다. bIPTP 파킨슨병 동물모델에서 nicotine 보호효과 탐색에 관한 실험은 nicat푸e 0.2mgAg을 5일 퐁안 투여 후 리『fP(30mgag)를 CS7Bt/6 마은스에 복강 내주사로 nicotine과 병용 투여한 후 1, 2, 3, 4, 5일째 뇌를 적출하땄다. 신경세포사가 뚜렷이 관찰되기 시작하는 4, 5일째의 신경세포 수의 감소 정도를 20. 30% 정도 약화시키는 경향을 보였으나, nicotine 보호효과에 대한 추가 실헝이 현재 수행 중에 있다. The cause of Parkinson's disease (PD) is largely unknown. However, free radical toxicit? may plaf a role ip. the degeneration of substantia nigra, which is the Hajorfocus of pathological damages in PD. Recently, a neuroprotective effect of nicotine in PD has been suggested. Therefore, the mechanism of neurodegenerafion and protective potential o( nicotine in PD were investigated in the experimental modeB of Pll using a neurotoxin, C57BL/6mice were administered with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP, 30 mg/kg,j.p.). The degree of neurodegenerafion was determined by immunohistochemical stainiHB oftyrosine hydroxylase (TH). TH-positive cells on nigral sections were found 56.0 ±4, 57.9 ±6,52.315ce11s, 49.0±3cells, and 39,4±Scells at days 1, 2, 3, 4, 5, respectively (controls : 57.6±Scells). Hoechst and TUNEL staining showed no evidence of apoptosis. The exandnation on themice co-adrunistered with nicotine(0.2mgAg) and MPTP(30mgag) revealed a tendency ofnicotine protective effects. At days 4 and 5, the degree of TH-positive cells was decreased by20-30%, In corclusiffn, the role of apoptosis was not evidenced in this MPTP modeB of PB.The possible proteccon by nicotine should be elucidated with further studies.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

老齡者의 建康을 위한 生活習慣 實態調査

申東敏,長鳳愚,李揆文,金賢俊,金昌範,崔宗洙,崔鍾晥,李鍾珏,金圭碩,趙庚旭,金鍾聲,朴鍾振 平生體育硏究所 論文集 1987 平生體育硏究所 論文集 Vol.2 No.-

With a view to examining the habit and method in which old people maintain and improve their health, we consulted 551 men and 444 women who were over 65 years old, and concluded as follows: 1. Habit of eating It's been revealed that most of the old people keep a regular eating hour, control the quantity of meal or eat a little food, and prefer vegetables to meat. 2. Mental health Old people feel the necessity for mental health and most of them (about 80%) keep good mental health without becoming pessimistic. Their chief concenrs have turned out to be about their sons and daughters and their own health and finance. 3. Managing Good Health It has been revelaed that old people do not possess any special kind of secret to keep good health but taking plenty of rest, regular meal, and proper exercise, and many of them (about 60%) have been shown to eat invigorant food that they can easily get around their living area. 4. Physical Functions It has been revealed that many old people are conscious of some symptoms about their parts of body and about to percent of them suffers from neuralgia. Some measures like medical aid especially for old people need to be taken as soon as possible. As we have found that the health-keeping method of old people consists plenty of rest, proper exercise, and appropriate nutrition, we can conclude that the recreatonal and culture facilities and programs for keeping old people in good health should be developed. It is also necessary to study food that contribute to their health and develop ways to get rid of the stresses to which they are exposed in their daily life. Presides, it is natural that government found an administrative department to deal with these matters effectively.

패러글라이더의 날개끝각의 변화에 의한 양항특성연구

김진우,김학윤,김우진,이봉준 한국항공대학교 항공우주산업기술연구소 2002 航空宇宙産業技術硏究所 硏究誌 Vol.12 No.-

본 논문에서는 패러글라이더의 날개끝각을 변화시켜서 양항비를 증가시키는 새로운 기술에 대하여 연구하였다. 패러글라이더의 날개끝각을 변화 시킬 때 양항특성에 미치는 영향을 실험과 비행시험에 의한 방법으로 연구하였다. 풍동실험에서는 가로세로비가 4.5인 패러글라이더의 모형을 사용하여 날개끝각이 변할 때 패러글라이더의 양항특성에 미치는 영향을 연구하였으며 그 결과 재래식 패러글라이더보다 날개끝각이 변하는 패러글라이더가 양항비가 증가하는 효과가 있음을 알 수 있었다. 비행실험은 "에델"사의 고급 기종인 "Response"를 사용하여 비행중 속도비에 대한 영향을 조사하였다. 그 결과 실험치와 잘 일치함을 보였다. In this paper, a new technology which increases the lift-drag ratio of a paraglider by varying wing tip angle is presented. An experimental study and flight test have been performed on the lift and drag characteristics of a paraglider with various wing tip angle. A wind tunnel investigation has been conducted to determine the effects of wing tip angle variation on the lift and drag characteristics of a paraglider model of aspect ratio 4.5. The results show that a paraglider with variable wing tip angle is more effective in increasing the lift-drag ratio than conventional paraglider. A flight test was conducted by using Edel's advanced "Response" paraglider on the effect of speed ratio. The flight test results agree favorably with the experimental data.

소형 소각로에서 운전조건과 온도분포 사이의 관계 분석

김성준,박종환,전봉준 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.B

One aims to find out how the operation condition of secondary inlet angle effects the temperature distribution inside a small incinerator. A finite volume commercial code, PHONICS, is used to simulate the temperature field in an incinerator. The computational grid system is constructed by Multi-Block technique. The governing equations based on the curvilinear coordinates are used. Numerical experiments are done with the five variations of secondary air inlet. The temperature distribution is quantified by the statistical deviation of temperature in an incinerator. The computational analysis says that the certain angle of secondary air inlet could improve the uniformity of temperature distribution in an incinerator.

백서 골수세포의 석회화 과장에 미치는 치은 섬유아세포의 영향

김석용,권영혁,박준봉 慶熙大學校 齒科大學 1995 慶熙齒大論文集 Vol.17 No.1

The purpose of this study was performed to investigate the mineralization and differentiation of osteobalsts for bone regeneration in vitro and the effect of rate of the composition in periodontal cells on mineralization. For this study, healthy gingival tissues were surgically obtained from the patients during 1st premolar extraction for the purposes of orthodontic treament. Gingival tissue was washed several time with Phosphate buffered saline contained high concentration of antibiotics and antifungal agent, and cultured in Dulbecco's Modified Eagle's Medium(DMEM, Gibco, U.S.A.) Every cell were cultured in state at 37 C, 100% of humidity, 5% of CO2 incubator. Bone marrow stromal cells were isolated from 5-day-old rat femur with using medium irrigation mathod by syringe. Cell suspension medium were centrifuged at 1500 rpm for 5 min and then cultured in the petri dish. Two kinds of cell were freezed and stocked in the liquid nitrogen tank until experiment. Cell were incubated into the 24multi-well plate with 5 x 104 cell/well of medium at 37 ° C, 100% of humidity 5% CO2 incubator for 24 hours. After discarded of the supernatent of medium, 0.5m of medium were reapplied and incubated. And counted the number of cell using the hemocytometer and inverted light microscope. We have measured the number of mineralized nodule with using Alizarin red S. staining in microscope; Furthermore every cell were observed the morphological change between every rate of co-culture of the two kinds of cell. The results were as follows; The rate of proliferation of co-culture cell revealed high rate tendency compared the bone marrow stromal cell only and low growth rate to compared with gingival fibroblast only. The tendency of formation of the mineralized nodule were observed dose-depend pattern of bone marrow stromal cell. It is concluded that the gingival fibroblast may inhibit the formation of mineralized nodule in the culture of the bone marrow stromal cell.

과호산구증가증의 원인과 발생율에 대한 임상적 고찰

김봉준,이천우,조은주,김희규 고신대학교 의과대학 2010 고신대학교 의과대학 학술지 Vol.25 No.2

Background: Eosinophilia is associated with various primary and reactive conditions. The incidence and causes of eosinophilia might have changed through time according to the changes in the incidence of diseases such as cancer, chronic degenerative diseases, and so forth. This study was sought to investigate the causes and the incidence of hypereosinophilia and compare the results with those obtained by other reports in Korea. Methods: Eosinophilia and hypereosinophilia are diagnosed when the absolute eosinophil count is greater than 500/μL and 1,500/μL, respectively. Patient's clinical records were reviewed to determine the underlying clinical conditions in relation to what causes hypereosinophilia. Results: Out of 18,941 patients who undertook hematology profiles, 1,584 (8.4%) and 143 (0.75%) were found to have eosinophilia and hypereosinophilia, respectively. Among patients with hypereosinophilia, 106 patients (74.1%) had identifiable and/or possible causes. The major causes of hypereosinophilia were malignancy (48.1%), allergy and skin diseases (22.6%), infectious diseases (9.4%), gastrointestinal tract diseases (5.7%), and hepatobiliary diseases (4.7%). Conclusion: We found various causes of hypereosinophilia in this study, and the most common cause of hypereosinophilia was malignancy. Therefore, a thorough study in patients with hypereosinophilia is necessary.

고관성 Pre&Autortating 로터를 이용한 Super STOL 수송기 개념 설계의 타당성 연구

김학윤,이봉준 한국 항공대학교 항공산업기술연구소 1999 航空宇宙産業技術硏究所 硏究誌 Vol.9 No.-

산악이 많은 한국과 같은 지형적 조건에서 운용 가능한 지역 운송용 항공기를 설계하기 위한 임무 요구조건을 설정하고 유사기종에 대한 성능 분석을 하였다. 성능 분석에 따라 설계의 초기 파라미터를 결정하였고 초 단거리 이, 착륙 성능 구현을 위하여 새로운 개념의 고양력 장치인 고관성 Pre&Autorotating 로터를 도입하였다. 고관성 로터의 풍동실험 결과를 토대로 Prerotation에 의해 고관성 로터에 저장된 운동에너지를 발산시키는 방법에 의한 이륙 방식과 자동회전하는 로터를 이용하여 착륙하는 방식에 대하여 검토하였고 설계 파라미터간의 관계에 대해 고찰하였다. 가능성 검토의 결과 고관성 Pre&Autorotating 로터는 순항 성능을 훼손하지 않고 초단거리 이, 착륙 수송기를 설계하기 위한 보조 양력 증가장치로서 매우 유용할 수 있음을 알 수 있었다. Mission specifications were established for the regional transport aircraft which is operatable in the mountainous country like korea, and the performance of similar regional aircraft were analyzed. After that, for the research the initial design parameters were set simultaneously introducing the high inertia Pre&Autorotating rotor concept as a new high lift device. Feasibility research was made based on the wind tunnel test results of high inertia rotor for the ways of dissipating kinetic energy stored in the high inertia rotor for the take-off and of using autorotating rotor for the landing, correlations between design parameters were studied too. feasibility study indicated that the high inertia Pre&Autorotating rotor could be very useful augmented lift device in order to design super STOL transport not deteriorating cruising performance.