반복 작업 근로자들에서의 경견완장애에 관한 연구

최재욱,염용태,송동빈,박종태,장성훈,최정애 大韓産業醫學會 1996 대한직업환경의학회지 Vol.8 No.2

본 연구는 근골격계 질환중에서 대표적인 질환인 경견완장애를 대상으로 일부 제조업 및 전화교환수 근로자에서의 경견완장애의 유병실태 파악, 경견완장애의 정확한 분류 및 향후 진단기준의 개발에 필요한 기초적인 자료 수집에 목적을 두었다. 조사대상은 반복동작에 폭로되는 생산직 근로자 98명, 모전화국의 전화교환수 115명을 대상으로 근골격계 증상호소, 이학적 검사 및 신경학적검사와 기타 혈중 효소등의 임상검사 및 악력의 차이 등을 조사하였다. 조사대상 사업장 중 B사업장은 전자부품을 생산하는 사업장으로, 제품 조립라인의 작업형태는 주야 2교대 근무이며, 앉아서 하는 작업과 서서하는 작업이 혼재 되어있다. A사업장은 전화교환작업, 즉 컴퓨터단말기를 취급하는 작업으로 전원 앉아서 하는 작업이며, 주야 2교대 작업이다. 조사대상 집단의 일반적 특성은 다음과 같다. A사업장 근로자의 평균 연령은 37.9세, 평균 근속년수는 17년이며, B사업장은 평균 연령 37.7세, 평균 근속년수 10.4년이었다. A 사업장은 대상 근로자 115명이 전원 여자였으며, B사업장은 대상근로자 98명 중 남자 68(69.4%)명, 여자 30(30.6%)명이었다. 조사 결과는 다음과 같다. 사업장별 자각 증상 호소율은 A 사업장의 경우 경부 85.2%, 견관절 81.7%, 주관절 34.8%, 완관절 73.0%의 순으로 특히 경부 및 견관절, 완관절의 증상 호소율이 높았으며, 반면 B 사업장은 경부 51.2%, 견관절 56.1% 주관절 23.5%, 완관절 31.3%의 순이었다. 근속년수별 자각증상 호소율은 경부와 견관절의 자각증상 호소율이 40%이상으로 주관절 및 완관절의 지각 증상 호소율에 비해서 상대적으로 높았으며, 경부와 완관절은 근속년수가 증가함에 따라 자각증상에 호소율이 통계적으로 유의하게 증가하였다. A 사업장, B 사업장 모두 최소 22.8% 이상의 근로자(증상 경험자중)가 병원이나 약국을 방문하여 치료를 받았다고 응답하였으며, 사업장 간의 차이는 보이지 않았다. 조사 대상자 전원에게 신경학적 검사와 근전도 검사를 포함한 정밀건강진단을 실시하였다. 정밀건강진단 결과 A 사업장은 질병자가 10명(8.6%), 요주의자가 31명(26.9%), 재검자가 2(1.7%)이었으며, B 사업장은 질병자가 16(16.3%), 요주의자가 12명(12.2%), 재검자 2명(2.0%)이었다. 이러한 이상자의 질병별 유형은 긴장성 경부증후군에 해당하는 사람이 46명으로 이 중 질병자는 13명, 요주의자 30명 재검자 3명이었으며, 수근관증후군은 16명으로 질병자 3명, 요주의자 8명, 재검자 5명이었다. 기타 드퀘르뱅씨병은 5명으로 질병자 4명, 요주의자 1명이었으며, 외측상과염 3명, 이두근개건염 3명, 회전근개건염 3명, 내측상과염 2명, 경추디스트증후군이 5명 등이었다. 사업장별로는 A 사업장의 경우 긴장성경부증후군이 11명, 수근관증후군이 8명, 드퀘르뱅씨병 3명, 경추디스크증후군이 1명이었으며, B 사업장은 긴장성경부증후군이 35명, 수근관증후군이 8명, 드퀘르뱅씨병 2명등의 순이었다. 이러한 결과는 A 사업장의 경우 작업 조건이 의자에 앉아서 실시하는 컴퓨터 작업인데 반하여 B 작업장은 대부분 기립작업, 반복 조립으로 이러한 작업조건에 차이에 기인하는 것으로 판단된다. 경견완장애의 이상소견과 관련이 있는 성별, 연령, 빈도 위험도 점수 및 힘 위험도를 독립변수로 설정하여 다단계 로지스틱 회귀분석을 실시하였다. 경견완장애 이상소견에 통계적으로 유의한 영향을 미친 변수는 성별(p=0.0005), 연령(p=0.0093)이었으며, 힘위험도는 p값이 0.0567, 빈도위험도는 0.0983으로 유의하지 않았다. The purpose of this study is to investigate the current status of and to collect the basic informations of musculoskeletal diseases of upper extremities in manufacturing and telecommunication companies. The subjects were 213 workers, consisted of 98 manufacturing workers and 115 telephone operators. The musculoskeletal symptom survey, job safety analysis(JSA), and medical examinations including neurologic and nerve conduction velocity(NCV) test were conducted. All workers were women in company A, while the other composed of 68(69.4%) men and 30(30.6%) women. The results were as follows: 1. The rates of self-reporting symptoms in each company were 85.2% at the neck, 81.7% at the shoulder joint, 73.0% at the wrist joint and 34.8% at the elbow joint in company A, while 56.1% at the shoulder joint, 51.2% at the neck and 23.5% at the elbow joint in company B in order. 2. No relationship was observed between the work duration and symptom rate in company A, but the highest symptom rate was observed at the neck in 10-19 year work duration group, at the shoulder, elbow and wrist joint in 5-9 year work duration group in company B. 3. Over the 22.8% of total workers in this study having symptoms got medical treatment at the medical clinics or drug stores, but there was no statistical difference between both companies. 4. In company A, 16(13.9%) workers were classified as D category, 12(10.4%) workers as C category and 2(1.7%) workers as R category among 115 workers. And D category was 10(10.2%), C category 31(31.6%) and R category 4(4.0%) among 98 workers in company B. D category means disease category needed futher treatment, C category means disease category needed no treatment and R category means recheck category needed futher evaluation. 5. The types of musculoskeletal disorders including D, C, and R category were 46 cases(D 13, C 30, R 3)of tension neck syndrome (TNS), 16 cases(D 3, C 8, R 5) of carpal tunnel syndrome (CTS), 5 cases of De Quervain's disease, 3 cases of lateral epicondylitis, 3 cases of bicipital tendinitis, 3 cases of rotator cuff tendinitis, 2 cases of medical epicondylitis, and 5 cases of cervical disc syndrome. 6. In company A, the total cases of 11 TNS, 8 CTS, 3 De Quervain's disease, 3 lateral epicondylitis, 3 rotator cuff tendinitis and 1 cervical disc syndrome were diagnosed and so were total cases of 35 TNS, 8 CTS and 4 cervical disc syndrome in company B. 7. By stepwise multiple regression analysis with dichotomization of musculoskeletal disease, the following odds ratios were significantly high(p<0.05)-sex(2.707) and age (1.926).

재발성 호흡기 유두종증의 임상양상과 보조 치료의 유용성

성명훈,최병윤,진정욱,성원진,박범정,노종렬,김대우,원태빈,김광현 대한이비인후과학회 2001 대한이비인후과학회지 두경부외과학 Vol.44 No.12

덕유산 국립공원의 담수조류상

김백호,최민규,정연태,이종빈,위인선,길봉섭 원광대학교 환경과학연구소 1996 環境科學硏究誌 Vol.5 No.1

아날로그 방식을 이용한 광케이블의 선로유지 보수를 위한 광전화기 설계 및 제작에 관한 연구

김충관,최현용,소성진,김영곤,김종빈 조선대학교 전자정보통신연구소 2000 電子情報通信硏究所論文誌 Vol.3 No.1

본 논문에서는 fiber optical field test 에서의 통신과 파이버설치, 시험, 유지/보수 및 손실측정에 사용되는 광전화기를 설계 하고자 한다. 본 장비는 음성을 광신호로 변조하여 파이버로 내보내어 설치자/시험자/수리자 등이 상대방과 통신할 수 있도록 한다. 이번에 설계한 광전화기는 FM 변/복조 방식을 이용한 아날로그 양방향 광전화기로써, 마이크로폰을 통해 입력되는 음성신호를 광신호로 변환하고 이를 다시 FM변조한 후 신호를 파이버로 전송한다. 그리고 Photo Diode를 통해 수신된 광신호는 FM 복조기를 통해 아날로그 신호로 복조한 후 적절한 이득으로 취하여 스피커로 전송되고 전송된 신호는 스피커를 통해 사람이 들을 수 있는 소리로 바뀌게 된다. 단일 파이버(Single Optical Fiber)를 통한 쌍방향 동시 통화는 13㎛의 LED를 사용하여 FM 변조 방식을 채용하므로 가능하였다. In this paper, The Optical Talk Set is an design for communication in fiber optical field test and other applications(fiber installation, examination, maintenance/restoration and fiber identification) It launches voice modulated optical signal into fiber and makes the installer/examiner/restorer etc Designed optical talk set is analog full duplex and provides FM for data(de)modulation. The device sends an optical signal which is FM modulated by the voice signal from the microphone And then received form the Photo Diode optical signal is amplified and sent to the ear-phone Single fiber, full duplex operation is available using the FM modulation of 13 ㎛ LED optical signal

금강 및 만경강 상류의 식물플랑크톤 군집구조와 동태

김백호,최민규,정연태,이종빈,위인선,길봉섭 원광대학교 환경과학연구소 1997 環境科學硏究誌 Vol.6 No.1

Trans-sphenoidal approach에 의한 pituitary microadenoma 수술 후의 임신 1례

여준규,이두룡,이미정,최종무,이원주,류효충,임만빈,최은주 啓明大學校 醫科大學 1993 계명의대학술지 Vol.12 No.3

We treated a patient with pituitary microadenoma having hyperprolactinemia and irregular menstruation infertility by transsphenoidal microsurgery. Her menstrual cycle become irregular after marriage but previous menstrual cycle was regular. When she visited our hospital due to infertility, initial serum prolactine level was slightly elevated 35.68ng/ml, During bromecriptine therapy, abrupt increase of serum prolactine level up to 126.52 ng/ml and headache and facial flush and galactorrhea developed. Pituitary microadenoma was confirmed by CT and MRI. The patient underwent transsphenoidal microsurgery. Patient was pregnant after surgery, and it was confirmed by USG and she is following up, OPD now.

WDM 광소자 제작을 위한 S-Bend형 방향성 결합기 설계에 관한 연구

라경태,윤중현,김상덕,최현용,김종빈 조선대학교 전자정보통신연구소 2001 電子情報通信硏究所論文誌 Vol.4 No.2

In this paper, we proposed a waveguide offset-applied S-Bend type directional coupler for reducing loss and complete coupling. Calculation results were gained by effective index method and simulated by beam propagation method. Condition for calculation are as follows. Refractive index difference between core and clad is 0.75%, clad index is 1.444, waveguide separation is 3 ㎛, and curvature radious is 10000 ㎛. As results from simulation, 3 dB coupler and full coupling directional coupler have to introduce a waveguide offset 0.25 ㎛ for minimum insertion loss and complete coupling, and we certificated that waveguide offset affected to insertion loss properties. Hence, we found that a directional coupler for wavelength division (de)multiplexing has to introduce a proper waveguide offset.

Simple endothelial cell patterning induced by reactive oxygen species on PDMS

Jong Seob CHOI,Hye Bin PARK,Hyung Jin KIM,Minji CHOI,Tae Seok SEO 한국진공학회 2016 한국진공학회 학술발표회초록집 Vol.2016 No.8

Bacteriocins from Bacillus thuringiensis subsp. cameroun as A Possible Selection Marker in Bt Conjugation

Jong Bin Park,Qin Liu,Jae Young Choi,Jae Su Kim,Yeon Ho Je 한국응용곤충학회 2011 한국응용곤충학회 학술대회논문집 Vol.2011 No.10

Bacillus thuringiensis (Bt) is characterized by its ability to synthesize crystal toxins and also able to produce bacteriocins such as thuricin, tochicin, entomocin and bacthuricin. The present work, for the first time, describes the biological activity of bacteriocins from B. thuringiensis subsp. cameroun (Btc). Supernatant which was produced from a liquid culture of Btc had antimicrobial activity against various Bt subspecies, ending up to making a inhibition zone on an agar medium. A significant reduction in antimicrobial activity was observed when the supernatant was exposed to heat at 47~50°C for 15 min. Proteins were separated from the supernatant by a fast protein liquid chromatography (FPLC) given the thermal instability. A group of FPLC fractions had antimicrobial activity against Bt subsp. palmanyolensis, israelensis, 1-3, morrisoni, toguchini and kurstaki and a Bacillus. cereus ATCC21768, ATCC14579 and NRRLB-569. Interestingly, when the supernatant was individually incorporated into the liquid cultures of Bt subsp. israelensis (Bti) and mogi (Btm) with mosquitocidal activity, a vegetative cell growth was observed only in the Btm culture 10 h post-incubation. A possible recovery of vegetative Btm cell growth was observed, compared to a control without the supernatant. These results suggest that Btc produced proteinous antimicrobial substances, one of which may be used as a selection marker to separate Btm after possibly conjugating the two mosquitocidal strains.

Construction of A Recombinant Bacillus thuringiensis 19-22 Strain Exhibiting Antifungal and Dual Insecticidal Activities

Jong Yul Roh,Qin Liu,Jae Young Choi,Yong Wang,Xueing Tao,Jong Bin Park,Hee Jin Shim,Gyung Ja Choi,Jin-Cheol Kim,Yeon Ho Je 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05

A new Bacillus thuringiensis isolate 19-22 (Bt 19-22) exhibited high anti-fungal activity against barley powdery mildew (Blumeria graminis f. sp. hordei). The cry gene content of Bt 19-22 comprised cry1Aa, cry1Ab, cry1Ac and cry1D which have high insecticidal activity against lepidopteran larvae. We tried to confer a dipteran insecticidal activity to Bt 19-22 for constructing a recombinant strain which has multiple functions, anti-fungal and dual insecticidal activity. The insecticidal cry11Aa gene of B. thuringiensis was constructed under cry1Ac promoter in an E. coli-B. thuringiensis shuttle vector (pPro11A). The plasmid, pPro11A was introduced into Bt 19-22 isolate by electroporation and four transformants which had different cry gene contents were identified by PCR with cry11Aa and cry1-type specific primers. Among them, a Bt 19-22 transformant (11A/19-22 No. 7) expressed Cry11A protein (approximately 70 kDa) successfully without change of its inherent characteristics such as Cry protein expression and antifungal activity. The insecticidal activity of 11A/19-22 No. 7 was checked against Plutella xylostella and Culex pipiens. These results suggests that the recombinant strain shows dual insecticidal activity against lepidopteran and dipteran larvae as well as antifungal activity.