범법 정신 장애자와 일반 정신 장애자의 약물 사용 양상에 관한 비교 분석

이길홍,박두병,나철,이재광,기백석,이재우,유영식,이영식,이헌재 중앙대부설한국의과학연구소 1991 한국의과학 Vol.23 No.1

표면근전도와 적외선체열촬영을 이용한 요통의 평가

이강진,최인성,이소영,한재영,이삼규,채홍재,이성과,문재동 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.3

목적 : 요통환자에서 요통의 유무와 강도를 평가하고자 표면근전도를 이용하여 근육 활동성의 차이를 검증하였고 적외선체열촬영을 이용하여 제표면 온도의 변화를 측정하였다. 방법 : 요통환자군 16명과 대조군 16명에 대하여 요부에 부착한 표면전극에서 얻은 근전도 신호와 적외선체열촬영 결과를 비교하였다. 교란요인의 영향을 배제하기 위하여 연령과 성별 그리고 비만도에 따라 정상 대조군과 요통환자군을 짝짓기하여 각각 16명씩 선정하였다. 결과 : 정적표면근전도 실시 결과 우측의 경우 중앙값이 요통환자군에서 198.1 ㎶, 정상대조군에서는 161.3 ㎶로 통계적으로 유의한 차이가 있었고(p<0.01), 좌측은 요통환자군에서 194.2 ㎶, 정상대조군에서 180.5 ㎶로 유의한 차이는 없었다. 동적표면근전도 실시 결과 재신전시와 굴곡시 근전위의 비가 우측의 경우 요통환자군에서 중앙값이 1.12였고 정상 대조군은 1.39로서 두 군간에 유의한 차이가 있었고(p=0.027), 좌측의 경우도 요통환자군에서는 1.08이었고 정상 대조군에서는 1.21로 유의한 차이가 있었다(p=0.036). 적외선체열촬영결과 ΔT가 0.5 ℃ 이상의 차이가 있을 때 이상이 있는 것으로 정하면, 요통환자군에서는 16명 모두 이상자로 판정되었고, 정상 대조군에서는 16명중 3명이 이상자로 판정되어 민감도는 100 %, 특이도는 81.3 % 였다. 표면근전도를 이용한 요통의 진단은 민감도가 78.6 %이고 특이도가 72.2 %였으며, 적외선체열촬영은 민감도가 100 %였고 특이도가 87.5 %였다. 결론 : 이러한 결과로 볼 때 표면근전도 검사법과 적외선체열촬영은 요통을 간접적으로 평가하는데 도움이 되는 검사법이며, 적외선체열촬영이 표면근전도검사법에 비하여 보다 정확한 검사법으로 판단된다. Objectives : We studied the efficacy of surface electromyography(SEMG) and digital infrared theimographic imaging (DITI) in the assessment of low back pain both(LBP) Methods : We compared electromygraphic signals from electrodes placed in the lumbar area and the digital theimographic images in 16 LBPpatients and 16 control subjects. The LBP patients and the control subjects were matched for age, gender, and body mass index(BMI) to adjust for any confounding effects Results : In the static analyses of SEMG, median value was 198.1 ㎶ for the controls on the right side, and they were 194.2 ㎶ and 180.5㎶ on left side respectively. There was a statistically significant difference between the two groups on the right side(p<0.01), but not on the left side. In the dynamic analyses of the SEMG, the median values of the extension per flexion ratio of right side were 1.12 for LBP patients and 1.39 for controls. and those on the left side were 1.08 and 1.21 respectively. There were statistically significant differences in both sodes(p<0.05). The sensitivity and specificity were 100% and 81.3% in DITI, 78.6% and 72.2% in SEMG. Conclusions : These results indicate that SEMG and DITI are useful methods for indirect assessments of LBP, and that DITI is more sensitive and specific than SEMG.

범법정신장애자의 정신의학적 특성분석

이길홍,이재광,박두병,나철,기백석,이재우,유영식,이영식,이헌재 중앙대부설한국의과학연구소 1991 한국의과학 Vol.23 No.1

THE EVALUATION OF HYDRAULIC CHARACTERISTICS OF THE GEOSYNTHETIC CLAY LINERS WITH HUMIC SUBSTANCES OF LEACHATE IN THE LANDFILL

( Young-soo Han ),( Jai-young Lee ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1

Geosynthetic clay liners (GCLs) have widely used as one of the hydraulic barrier materials in waste landfills; however, they also have a potential danger when exposed to some organic and inorganic leachate. The major component of the GCLs is bentonite. Hydraulic conductivity of GCLs can be easily changed due to bentonite, if they are permeated with various components of the leachate. Especially, the humic materials of landfill lechate closely interact with clay particles in bentonite. This study was performed to characterize the humic materials composed of two kinds of landfill leachate; the first one was a leachate of old-landfill (O-landfill) and the other one was a leachate of young-landfill (Y- landfill). Also,another purpose was to evaluate the effect of humic materials on the swelling and hydraulic conductivity of GCLs. The result of the swelling tests showed that the amount of humic materials and high electrical conductivity caused a decrease of the swelling of bentonite. This was expected to increase the hydraulic characteristics of GCLs. The increase in hydraulic conductivity of GCLs permeated with O-leachate was significantly higher than that with Y-leachate. This trend showed that humic materials were responsible for the increase in hydraulic conductivity of GCLs. Therefore, the potential danger of increasing hydraulic conductivity of GCLs permeated with the landfill leachate has to be considered when GCLs are used in waste landfills.

폐기물 매립지 침출수내의 휴믹 물질이 토목합성 점토 라이너의 수리학적 특성에 미치는 영향의 평가

한영수 ( Young-soo Han ),이재영 ( Jai-young Lee ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2

폐기물 매립지에서 수리학적 차단층의 하나로 사용되는 토목합성 점토 라이너(GCLs)는 유기 또는 무기 침출수에 노출됨에 따라 잠재적인 위험성을 갖는다. GCLs의 주요소는 벤토나이트이다. GCLs의 투수계수는 침출수의 여러 가지 물질이 침투되었을 때, 벤토나이트 때문에 쉽게 변할 수 있다. 특히, 침출수의 휴믹 물질과 벤토나이트의 점토 입자는 상호간에 밀접한 영향을 미친다. 본 연구에서는 매립 연령이 오래된 매립지(O-매립지)와 신생매립지(Y-매립지)의 침출수 내 휴믹 물질의 특성을 파악하였다. 또한 이러한 휴믹 물질이 팽윤도와 GCLs의 투수계수에 미치는 영향을 평가하는 것을 목적으로 했다. 팽윤도 실험 결과는 휴믹 물질의 양과 전기전도도가 증가할수록 벤토나이트의 팽윤도가 감소함을 보였다. 이것은 GCLs의 수리학적 특성을 증가시킨 것으로 예상된다. 수리학적 전도도 실험결과, O-매립지의 침출수 및 휴믹 물질을 Y-매립지의 침출수 및 휴믹 물질보다 GCLs 의 투수계수를 큰 폭으로 증가시켰다. 이것은 휴믹 물질이 GCLs의 투수계수를 증가시킨다는 경향을 보인다. 따라서, 매립지에서 GCLs이 사용될 때 침출수가 GCLs에 침투되었을 때 투수계수가 증가하는 잠재적인 위험성을 반드시 고려해야 할 것이다. Geosynthetic clay liners (GCLs) have widely used as one of the hydraulic barrier materials in waste landfills; however, they also have a potential danger when exposed to some organic and inorganic leachate. The major component of the GCLs is bentonite. Hydraulic conductivity of GCLs can be easily changed due to bentonite, if they are permeated with various components of the leachate. Especially, the humic materials of landfill lechate closely interact with clay particles in bentonite. This study was performed to characterize the humic materials composed of two kinds of landfill leachate; the first one was a leachate of old-landfill (O-landfill) and the other one was a leachate of young-landfill (Y-landfill). Also, another purpose was to evaluate the effect of humic materials on the swelling and hydraulic conductivity of GCLs. The result of the swelling tests showed that the amount of humic materials and high electrical conductivity caused a decrease of the swelling of bentonite. This was expected to increase the hydraulic characteristics of GCLs. The increase in hydraulic conductivity of GCLs permeated with O-leachate was significantly higher than that with Y-leachate. This trend showed that humic materials were responsible for the increase in hydraulic conductivity of GCLs. Therefore, the potential danger of increasing hydraulic conductivity of GCLs permeated with the landfill leachate has to be considered when GCLs are used in waste landfills.

만성 승모판 패쇄부전증 환자에서의 안지오텐신 전환효소 억제제의 장기 투여 효과

김대희,이명묵,이해영,조현재,박승정,서재빈,서정원,양한모,윤창환,조상호,이준희,김용진,김명아,손대원,오병희,박영배 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1994)

김재홍,안진균,정성재,김영태,김중환,김시영,이석종,이홍렬,서호석,김경훈,권혁진,정우권,고우석,이용석,안필수,오준규,오용섭 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.1

Background : In recent years gonorrhoea has been panendemic and remains one of the most common Sexually Transmitted Diseases in the world, especially in developing countries. Objective & Method : For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria Gonorrhoeae(PPNG), Ive have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1994, 168 strains of N. gonorrhoeae were isolated, among which 109 (64,9% ) were PPNG. Conclustion : Our results suggests that the prevalence of PPNG in Seoul is still increasing.

젖소의 Performance에 관한 연구

이재영 成均館大學校 科學技術硏究所 1990 論文集 Vol.41 No.1

176 Holstein milking cows of SINJUNG commercial dairy and national livestock experiment station were selected and classified into three groups A(Over 5,000 kg production), B(4,000kg∼5,000kg), C,(Below 4,000 kg) and their herd record(1979∼1988) was studied in age at first calving, service per conception, calving interval and average per cow production. 1. Age at first calving was as follows: A : 25.0 months, B : 25.4 months, C : 27.1 months 2. Service per conception of each group was A : 1.68, B : 1.76, C : 1.78 3. Average calving interval of three group was A : 388.9 days, B : 402.1 days, C : 445.7 days 4. Average production of three groups on lactation average basis was A : 5,226.8kg, B : 4,517.0kg, C : 3,124.5kg

Bleomycin이 모낭의 기질세포에 미치는 영향에 관한 전자현미경적 연구

이영만,김잉곤,류재만 한양대학교 의과대학 1993 한양의대 학술지 Vol.13 No.2

Bleomycin, one of antibiotic drug, produced by a strain of Streptomyces verticillus is used effectively in the treatment of various cancer. It is well known that bleomycin acts on the cancer cell by binding to nuclear DNA, causing single-strand scission and in turn inhibition DNA synthesis. Although bleomycin is very beneficial to cancer patient, it may damage ot normal cells. The author has undertaken this study to pursue the morphological changes of hair folliclis caused by bleomycin injection. Healthy male mice of DDY strain weighing about 20 gm were used in this experiment. Animals of the experimental group were intraperitoneally administrated with 15mg/kg bleomycin diluted in 0.2ml distilled water for injection by bid for 7days. The experimental animals were sacrificed at 1,3days, and 1,2 weeks after administration of bleomycin and specimens, skin of abdomen, were rejected. Some specimens were fixed 10% formalin for 24 hours and stained with hematoxylin and eosin. The others were prefixed in 2% glutaraldehyde-2.5% paraformaldehyde solution at 4℃ during 2-4 hours and postfixed in 1% osmium tetroxide solution. Ultrathin sections were made and double stained with urany1 acetate and lead citrate. These preparations were observed with light microscope and electron microscope (Hitachi H-600), respectively. The results were as follows: 1.The number and length of the hair folliclis were decreased and number of matrix cells were also reduced in skin in 1 day, 3 day and 1 week groups after administration of bleomycin. In 2 week group, hair follicles were similar to those of the normal control group. 2.Swollen mitochondria, mitochondria with indistinct double membranes and mitochondrial cristae, and degenerated mitochondria with horse-shoe shape were recognized cristae, and degenerated mitochondria with horse-shoe shape were recognized in 1 day, 3 day and 1 weed groups after bleomycin administration. In 2week group, swollen mitocondria and mitochondria with disorganized mitochondrial cristae and double membranes were observed. 3.The amounts of free ribosomes were markedly reduced in 1 day group after administration of bleomycin and slightly decreased in 3 day and 1 week groups. In 2 week group, distribution of free fibosomes were similar to that of the normal control gorup. 4.The cisternae of the rough endoplasmic reticulum with detachment of membrane-bound ribosomes were slihtly dilated in 1 day, 3 day groups after administration of bleomycin. In 2 week group, rough endoplasmic reticulum were similar to that of the normal control group. 5.A number of autophagic vacuoles were observed in 1 day, 3 day groups after administration of bleomycin and whorled membranous body was seen in 1 week group. Consequently, it is suggested that bleomycin would induce degenerative changes on the matrix cells of the hair follicle in mouse skin, but these damage are recovered as time goes by.

근거리 통신망 이용실태에 관한 연구

이영재,이종옥 동국대학교 경영대학원 1992 經營論叢-東國大學校 經營大學院 Vol.16 No.-