QT연장 증후군 환자에서 Head-Up Tilt Test에 의해 유발된 Torsades De Pointes 1례

전익수,차태준,김길수,김동완,김규종,김찬욱,김성만,주승재,이재우 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

초등학교 수학 학습 장애아동과 일반 아동간의 연산 오류 유형 비교 연구

전영례,안성우,김미경 한국특수아동학회 2003 특수아동교육연구 Vol.5 No.1

본 연구는 초등학교 수학 학습 장애 아동들의 연산 오류 유형을 일반 아동들과 비교하여 분석한 것이다. 초등학교 5학년과 6학년 아동 60명을 일반 아동과 수학 학습 장애 아동으로 각각 15명씩 나누어 네 집단으로 구분하고 수학 교과서 1-가 단계부터 4-가 단계까지 기초 연산에 대한 문제를 단계별로 4문항씩 총 228개의 문항을 구성하여 오류 검사를 시행하고 연산 오류 유형을 분석하였다. 수학 학습 장애 아동들은 자리값 오류, 명백한 계산 오류, 계산 순서 오류, 임의의 답, 무응답, 결함있는 알고리즘에서 오류를 많이 보였다. Mathematics lies at the heart of all knowledge, and simple computation (i.e., addition, subtraction, multiplication and division) is the aspect of mathematics that is most relevant to real life. Especially since the study of mathematics depends heavily on learning concepts in the proper sequence, students who fall behind initially typically have a hard time catching up with their peers and soon become completely frustrated with the subject. Through an analysis of the systematic and repeated errors committed by students who have difficulty with simple computations, this study seeks to determine the frequency and cause of each error pattern in the hope that this information may be employed in the future to help students with math learning disabilities(LDs). In this study, 30 normal students and 30 students with math learning disabilities were selected (in equal proportions) from the 5th and 6th grades of an elementary school in Pusan. These students were then administered a pre-prepared test. Differences among the 4 groups were determined by using the results to analyze their computational error patterns. The results are as follows. The errors committed by the students fit 9 patterns: operation mistakes (e.g., addition instead of subtraction), incomplete calculations (i.e., steps missing), improper digit placement, simple calculation errors, incorrect transcription (i.e., the student knows the answer but writes the wrong number), operations conducted out of order (e.g., addition before multiplication), random guesses, no attempted answer and flawed logic. Among students with math LDs, most mistakes involved improper digit placement, simple calculation errors, operations conducted out of order, random guesses, no attempted answer or flawed logic. Regardless of whether the students had a math LD, 6th graders made more mistakes involving incorrect transcription and operations conducted out of order than 5th graders. 5th graders with math LDs showed a particular tendency toward the random guess and no attempted answer patterns. Operation mistakes and incomplete calculations were prevalent among all the students in the study. A Chi-square analysis was conducted to test for relationships among the 9 error patterns and the 4 student groups. This analysis found that operation mistakes, incomplete calculations, incorrect transcription and operations conducted out of order were unrelated to the presence of a math LD, while improper digit placement, simple calculation errors, random guesses and flawed logic were linked to the presence of a math LD.

구미지역 직업성질환 감시체계

김성아,김진석,전혜리,정상재,김상우,이채용,함정오,유재영,최태성,하봉구,조민환,우극현 大韓産業醫學會 2003 대한직업환경의학회지 Vol.15 No.1

목적: 구미지역 내 대학병원이자 특수건강진단·보건관리대행기관의 산업의학전문의, 보건관리대행 간호사, 사업장 간호사를 중심으로 직업성질환감시체계를 구축하여 주요 직업성질환들의 발생현황과 규모를 파악하고자 하였다. 또한 연차적으로 산업, 직업, 업무내용 등에 따른 분포나 원인을 기존 자료원(특수건강진단의 직업병 유소견자와 산재요양승인 되는 직업병자)과 비교하여 분석·기술하고 예방 및 관리를 포함한 보건의료기술개발까지을 포함하는 종합적인 감시체계를 구축하고 운용하고자 하였다. 방법: 구미지역의 산업적 특성에 맞는 직업성질환감시체계를 구축하고 지역 감시체계의 모델을 제시하였다. 6대 감시대상 직업성질환(독성 간염, 직업성천식, 직업성 근골격계질환, 직업성 피부질환, 직업성 암, 수지진동증후군)의 실행적 환례정의, 보고양식 및 보고체계 개발, 분석양식 및 결과 배포 형식을 개발하였으며, 그 유병규모를 파악하고, 감시질환의 분포 및 특성, 관련인자 등을 분석·기술하고자 하였다. 이때, 1년간의 환례분석시 직업병 유소견자 및 직업병 요양자에 대한 자료와 함께 비교 분석하였으며, 노동통계자료를 이용하여 년간 발생률을 추정하였다. 결과: 2001. 1. 1일부터 2002.4.30일까지 총 287건이 보고되었으며, 직업성 근골격계질환 132건(46.0%), 직업성 피부질환 100건(34.8%), 독성간염 34건 (11.8%), 직업성천식 16건 (5.6%), 수지진동증후군 5건 (1.7%) 이었으며 직업성 암은 한건도 보고되지 않았다. 보고경로별로는 보건관리대행에서 33건 (11.5%), 해당 유해인자별로 실시되는 특수검진 외의 각종 건강진단업무 수행 중 발견된 환례에 대한 보고가 206건(71.7%)이었다. 직종별 분류의 결과는 섬유업종사자, 단순노무종사자, 음식업종사자 등이 다수를 차지하였다. 근골격계질환의 경우, 수근관증후군이 42건(33%), 외상과염/내상과염이 39건(30%)로 가장 많았다. 직업성 피부질환은 97건이 접촉성 피부염으로 유기용제류가 59건(59%)으로 가장 많고, 니켈 및 에폭시수지에 의한 알레르기성 접촉성 피부염이 각각 6건과 5건이었다. 독성 간염은 모두 DMF 나 DMAc에 의한 것으로, 근무시작 후부터 간기능이상이 발견되기까지의 근무기간은 대부분이 3개월 이하이며, 1개월 이하인 경우도 10건이나 되었다. 동 기간 중 감시환례에 대해 산재요양 자료와 중복여부를 확인한 결과, 중복되는 것은 하나도 없었다. 특수건강진단에서 직업병유소견자로 판정된 경우는 독성간염에서 3건이 있었으며, 나머지 질환은 중복되는 것은 없었다. 2001도 구미지역의 근로자수와 보고환례건수를 이용하여 연간 발생률을 추정하였다. 근로자 10만 명당 연간 발생률은 상지 근골격계질환은 63.6명, 피부질환 48.2명, 독성 간염 17.9명, 천식 7.7명, 수진진동증후군 2.4명이었다. 참여예상인원은 총 46명이었으며, 실제 참여자수는 21명, 평균참여율은 46%, 실제 참여 1이당 평균 보고건수는 산업의학전문의가 28건으로 가장 많았고, 대행간호사는 45,건, 사업장 간호사는 3.3건이었다. 결론: 지역 감시체계는 기존 통계자료들에서 발견되지 않았던 직업성질환의 발견에 유용한 통계원이며, 특히 지역의 특성과 여건을 고려하여 체계화된 시스템을 구축하여 운용한다면 더 성과가 클 것이다. Objectives: Area-based occupational disease surveillance in Kumi (KODS) was used to collect data on occupational diseases. The data was used to estimate the magnitude of the diseases, to analyze for their characteristics and to find links for their intervention and prevention. Methods: Since January 2001, occupational physicians and nurses in Occupational Health Service (OHS) have reported six major occupational diseases; occuaptional musculoskeletal disorders of the upper extremities (MSDUE), occupational dermatoses, toxic hepatitis, occupational asthma (OA), hand-arm vibration syndrome (HAVS), and occupational cancer. For the respective diseases, a reporting sheet and operational diagnostic criteria were developed by the KODS. An analysis of the KODS data, collected over a certain period, was compared with data from the Korea Labor Workers Corporation (KLWC) and the Specific Health Examination (SHE), and the incidence rates of the diseases estimated. Results: Between Jan 2001 and Apr 2002, 287 cases of the six major occupational disease were reported. Of these, there were 132 (46.0%), 100 (34.8%), 34 (11.8%), 16 (5.6%), and 5 (1.7%), cases of MSDUE, occupational dermatoses, toxic hepatitis, OA, and HAVS, repectively. But, there were no cases of occupational cancer. 33 (11.5%) of the incidence were reported via the OHS, 206 (71.7%) from health checkups, and the other 48(16.8%) from other routes. The synthetic fibers and electronic components manufacturing industries accounted for the greatest number of reported cases. With resport to occupation, the greatest numbers of incidence were reported from the elementary occupations, textile workers, assemblers, and cooks and food services worker, in that order. Of the MSDUE cases, carpal tunnel syndrome and epicondylitis were the two most common diseases. Most of the occupational dermatoses were due to contact dermatitis, with organic solvents (59%), nickel (6%), and epoxy resin (5%) accounting for the majority of these cases. All cases of toxic hepatitis were induced by dimethylformamide or dimethylacetamide, which were reported by a unique monitoring system. During same period, there were no cases claimed by workers to the KLWC, and only three cases from SHE, were identified. Using data from workers' number and surveillance, the annual incidence of MSDUE, dermatoses, hepatitis, OA, and HAVS, per 100,000 workers were 63.6, 48.2, 17.9, 7.7, and 2.4, respectively. Conclusions: These results show that an area-based surveillance system can be very effective for the collection of data on work-related diseases, at least in Kumi.

아크릴아미드-메타크릴아미드공중합체와 산성염료와의 결합

김우식,문성인,오대희,전일련 慶北大學校 産業開發硏究所 1985 硏究報告 Vol.13 No.-

Polyacrylamides which have different molecular weight and poly (acrylamide-co-methacrylamide)s which have different composition ratio were prepared. And the interaction of these polymers with methyl orange was studied by an equilibrium dialysis method in buffer solution (pH7) at 10, 20, 30, 40℃, respectively. The first binding constants and thermodynamic parameters in the course of the binding were calculated. The favorable free energy of the binding of methyl orange seems to be a result of the entropy change rather than the enthalpy change. The binding ability of methyl orange by poly(acrylamide-co-methacrylamide) was higher than that of methyl orange by polyacrylamide. The result is likely to be due to the hydrophobic property of methyl group in copolymer. However, the binding ability of methyl orange by poly (acrylamide-co-methacrylamide) of which composition ratio was 1:1 was lower than that of methyl orange by poly(acrylamide-co-methacrylamide) of which composition ratio was 2:1. This result is likely to be due to the conformation of the polymer. The thermodynamic parameters obtained were also discussed.

정신보건관련시설 입원(소)자의 주요 정신장애 유병률 : 전국 20개 시설의 입원(소)자를 대상으로

조성진,조맹제,서동우,함봉진,홍진표,배재남,이준영,이동우,박종익,전홍진,김성주,김용익 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.6

Objectives : One of the objectives of this study is to estimate the prevalence rates of psychiatric diagnoses in the combined populations of psychiatric hospitals, psychiatric nursing facilities and homeless asylums using the Korean version of the Composite International Diagnostic Interview (K-CIDI), which is a comprehensive and fully standardized interview schedule to assess psychiatric disorders for diagnosis. The Other objective is to compare with previously studied prevalence rates of Psy-chiatric diagnoses using the results of this study. Methods : The study subjects, aged from 181o 64 years, were randomly selected from 64,582 institutionalized population of psychiatric hospitals, Psychiatric nursing facilities and homeless asylums as of 30, June, 2001. Twelve trained interviewers administered the K-CIDI to the selected respondents. A total of 1,875 respondents (male 1,194, female 681) completed the interview. Results : The lifetime and one year prevalences of any diagnosis excluding nicotine dependence · withdrawal, anxiety disorder, eating disorder, somatoform disorder were 88.2% (male 88.1%, female 88.3%), and 65.8% (male 62.7%, female 73.7%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were 78.5% (male 75.3%, female 83.7%), and 56.8% (male 51.9%, female 64.8%), respectively. The lifetime and one year prevalences of alcohol use disorder (dependence/abuse) were 26.7% (male 37.9%, female 8.3%), and 8.7% (male 12.8%, female 2.1%), respectively. The lifetime and one year prevalences of mood disorder were 18.1% (male 13.5%, female 25.8%), and 10.4% (male 7.2%,female 16.9%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were comparable with the 2001 community survey by 1.19% to 1.32%, and 0.51% to 0.61%, respectively. The lifetime and one year prevalences of schizophrenia were also comparable by 0.16% to 0.28%, and 0.16% to 0.25%, respectively. There were no significant changes of prevalence rates when correction were applied to other psychiatric diagnosis. Conclusion : The results of this study could be used for evaluating the distribution of psychiatric diagnoses in mental health related facilities and for planning mental health policies.

BTA드릴에 의한 심공가공시 최적절삭조건과 공구수명에 관한 연구

장성규,이충일,전언찬,안찬우,김현수 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2

The BTA deep hole machining has an increasing because of its wide range applications and its good productivity. The BTA tools are capable fo machining for having a large length to diameter ratio in single pass. It's really necessary that the research for machining of the deep hole drilling by the BTA drilling because its required quality should be satisfied with one time machining. In machining deep holes by single edge BTA drill, P10 class of tool material out of single tube BTA drilling system, we got the result of our study of selecting the optimum cutting condition and tool life for an object, SM55C through our testing as follows. (1) Cutting speed V=42m/min, and feed speed F=90mm/min is the optimum cutting condition and the tool life was about 10 meters. (2) The testing was shown surface roughness was 12㎛, and the roundness was less 16㎛.

축산시설의 입지특성 분석 : 안성시 미양면을 중심으로

황한철,전우정,이남호,홍성구,김진태 안성산업대학교 1998 論文集 Vol.30 No.2

It is necessary to evaluate the location suitability of livestock facilities to guide reasonable livestock. The evaluation system could help plan new livestock facilities in rural areas. The assessment was performed based on location characteristics of livestock facilities such as land utilization around livestock facilities, size of livestock facilities, water and drainage condition, accessibility and distance from roads, floor condition, distance from village and house, direction of livestock facilities, ventilation facilities, animal Waste treatment, and so forth. In this study, location characteristics of livestock facilities were showed each location factors using statistical analysis.

한국인에서 혈소판 당단백 Ⅱb/Ⅲa 유전자 다형성과 관동맥 성형술 후 재 협착과의 관계

이민수,이정우,김보영,임대승,강정아,김정희,김윤철,성보영,최성준,성인환,전은석 충남대학교 의과대학 지역사회의학연구소 2000 충남의대잡지 Vol.27 No.2

Platelet aggregation is the final pathway of acute coronary syndrome such as acute myocardial infarction and unstable angina. Platelet glycoprotein IIb/IIIa is a membrane receptor for fibrinogen and yon Willebrand factor and it plays an important role in platelet aggregation and in the pathogenesis of acute coronary syndrome. It is known that polymorphism of the gene that encoding platelet glycoprotein IIb/IIIa(PI^A1/A2) is strongly related to acute coronary syndrome in Caucasian, but not in Koreans. We investigated relationship between platelet glycoprotein llb/Illa gene polymorphism and restenosis of coronary artery after angioplasty in Koreans. Total 371 patients(M=251. F=120) were enrolled. Angioplasty group comprised 143 patients who underwent coronary angioplasty, and in the angioplasty group, restenosis group comprised with the 65 patients who had restenotic lesion over 50% of luminal diameter in follow-up coronary angiography. Normal group comprised 153 patients who had no significant angiographic lesion and variant angina group comprised 75 patients who were positive in ergonovine test. Genomic DNA was extracted from peripheral arterial blood. To determine the frequency of P1^A1/A2 genotype, polymerase chain reaction(PCR) was done and the product was restricted with Mspl. 3%. agarrose gel electrophoresis showed restriction fragment length polymorphism. Clinical profile and risk factor were also reviewed. Among all 371 patients of study group, genotype of only one patients in restenosis group if is proven to be PI^A1/A2 heterozygote. All patients of normal study group, no restenosis group, and the other patients in restenosis group have an PI^A1 homozygote genotype. In our study, platelet glycoprotein IIb/Illa polymorphism has no relationship with restenosis of the coronary artery after angioplasty in Koreans. But the genotypic frequency of platelet glycoprotein IIb/IIIa gene polymorphism in Koreans is concordant with that of previous studies.

관상동맥 스텐트 시술 후의 재협착에 관한 연구

김윤철,이정우,김보영,강정아,임대승,이민수,김정희,성보영,최성준,성인환,전은석 충남대학교 의과대학 지역사회의학연구소 2000 충남의대잡지 Vol.27 No.1

Coronary stent implacement is known as an effective treatment in the intimal dissection after percutaneous transluminal coronary angioplasty and the prevention of restenosis. However, In-stent restenosis still remains a major concern in clinical stenting. The stents were placed in 103 patients from July 1996 to March 1999 and performed follow-up coronary angiograms in 59(57.3%) patients. To identify the clinical, angiographic and procedurerelated variables 'which predict late restenosis within the stented artery, 59 patients(58.3±9.9, M:F= 41:18) were studied. The clinical characteristics of the patients were stable angina in 23(39.0%), unstable angina in 14(23.7%), acute myocardial infarction in 21(35.6%) and old myocardial infarction in 1(1.7%). Coronary stenting was performed in 1 patient(1.7%) for primary lesion, 50 patients(84.7%) for suboptimal results after PTCA, 6 patients(10.2%) for bail-out procedure, and 2 patients(3.4%) for restenotic lesions. All patients were treated with aspirin and ticlopidinc. The follow-up angiograms were obtained at 7±4 months. The overall in-stent restenosis rate was 27.1%. The coronary angiographic findings were 32 single vessel(54.2%), 19 two vessel(32.2%) and 8 three vessel disease(13.6%). The angiographic morphological characteristics were type A in 33(55.9%), type B in 14(23.7%), type C in 12(20. 3%) cases. Variables of 16 patients with restenosis were compared with those of 43 patients without restenosis. Previously known predictors for in-stent restenosis were multiple stenting, stenting for restenotic lesions, residual stenosis after stenting, stenting for total occlusion lesions, reference diameter, balloon to vessel ratio, acute gain and minimal luminal diameter after procedure, design and characteristics of stents, ostial lesion of aorta, high pressure method for stenting, lesion length, diabetes mellitus, size of artheroma, saphenous vein grafts, ulcerlating lesions and calcified lesions. In this study, Reference diameter before stenting(2.43±0.54mm vs. 2.88±0.65mm, p=0.016) and balloon-to-artery ratio(1.28±0.26 vs. 1.11±0.18, p=0.006) were predictors for in-stent restenosis. 1) The overall in-stent restenosis rate was 27.1%. 2) In the analysis of predictors for in-stent restenosis, there was no significant differences in clinical, angiographic factors between group with restenosis and without restenosis. But, Only reference diameter before stenting and balloon-toartery ratio were predictors of late in-stent restenosis. In conclusion, stenting is effective revascularisation method for selected patients with ischemic heart disease, and to minimize in-stent restenosis rate, stent implanting is achieved in a large vessel on the basis of an artery-to-stnet ration of 1:1, if possible.

미용사의 요통 경험에 영향을 미치는 요인

백승룡,남철현,배성욱,김성우,권현숙,이정옥,전연숙 慶山大學校 保健福祉硏究所 2002 保健福祉硏究 Vol.7 No.-

The purpose of this study is to analyze and grasp the actual lumbaginous condition and relevant factors of 1,182 beauty artists of beauty shops in 5 metropolitan cities, small-to-medium cities, and fishing or agrarian villages for 3 months from June 20 to September 25, 2000 through questionnaires. 1) They showed 61.0 percents in her twenties, 66.4 percents of unmarried women from all the female objects, 70 percents in high school graduates as educational background, 52.4 percents in metropolitan city as service place, 25.4 percents in smoking rate, 71.6 percents in drinking rate, 48.1 percents in general bed as condition of bedroom, 17.9 percents in exercising rate, 53.6 percents in 'little eating', 39.6 percents in two or three centimeters of heel, and 89.5 percents in hair as beauty-related professional field. 2) The rate of lumgaginous experience of beauty artists was 83.5 percents. They showed higher rate of 91 percents in the thirties and forties, 92 percents of the married, 93.9 percents in junior college graduates, 97.2 percents in higher economic classes, 88.7 percents in smokers, 85 percents in general bed, 89.3 percents in sleeping on one's face, 85 percents in swimming, 92 percents in stretch, 86.7 percents in 56 to 60 kilograms of weight, 89.7 percents in group O blood, 90.5 percents in experienced women of abortion, 97 percents in heel over 8 centimeters, 58.3 percents in 'feel much fatigue', 93.6 percents in inconvenient chair of beauty shop, and 89.4 percents in a lack of recess than other group. 3) The more women who have been experienced in lumbago, the higher their social treatment(p<0.01), income(p<0.001), working time(p<0.05), job potentiality(p<0.05), inner affinity(p<0.05), and job satisfaction of environment(p<0.001) were. Women who suffered much stress related to job environment(p<0.001), client(p<0.01), and their duty(p<0.01) showed high rate of lumbaginous experience. 4) In degree of lumbago by characteristic, there was the significant difference in age over 50-years-old, unmarried women, college graduates, service of small-medium cities, higher economic classes, smokers or drinkers, hot-floored room, sleeping with ransack, stretch or swimming, group A blood, fat body, experience of abortion, 6 to 7 centimeters of heel, convenient chair of beauty shop, insufficient recess, lumbago continued for one to the three months in comparison of other group. 5) There were variables of posture such as to place materials under one foot(p<0.001), to lay arm on armrest and desk(p<0.001), to pull materials near body while lifting them (p<0.05), to sometimes use anodyne(p<0.01), not to lift also light materials(p<0.001), to be inconvenient in sleeping(p<0.001), to be absent at job for two or three days(p<0.01). The degree of depression(p<0.001), had the significant effect on the degree of lumbago(32.7%). The results are as follows : Beauty artists have faced upon dangerous job environment to cause lumbago. The more the industrial society will be developed, the more their burden of service will be increased. In addition, the occupational stress and posture of beauty artists who showed high job satisfaction and high economical level became major factors which have had an effect on their lumbago. In conclusion, it is desirable for beauty-related organizations and professionals to positively develop program of health education with much concern as well as to lessen stress of beauty artists through education of job posture and rightful life in order to prevent lumbago of those beaut.