• 제목/요약/키워드: Research type

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Biomonitoring Human Exposure to VOCs : Using Individual Susceptibility Markers

  • Kim, Jung-Hyun;Kim, Dae-Seon;Park, Jae-Sung;Kang, Tack-Shin
    • 한국환경보건학회:학술대회논문집
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    • 한국환경보건학회 2003년도 Challenges and Achievements in Environmental Health
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    • pp.187-191
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    • 2003
  • In this study, biomonitoring methods were developed to measure BTEXs exposure level in the air, metabolites of benzene and toluene in human urine, individual susceptibility markers in human blood for evaluation of the health effects about environmental pollution. We have also performed a small-scaled molecular epidemiology study on residents in Chuncheon and workers in workplace for these method applications. The workers in workplace were surveyed as study areas, and the residents in Chuncheon which is in the suburban area were surveyed as comparative areas in this study. Actually, 31 workers in as target group and 33 residences in as control group this epidemiological study. The results obtained from this study were as follows: 1. Benzene is a well-known carcinogen, it's median concentrations were 0.00024∼0.02057ppm at suburban area and 0.002∼00.654ppm at work place, These benzene concentrations were not exceed the OSHA(Occupational Safety and Health Administration) threshold benzene level of 1ppm in the states. 2. Metabolites product of benzene(t,t-Muconic Acid) and toluene(Hippuric Acid) were not significant both in suburban and workplace area. The median concentration of t,t-MA and HA were 0.0122, 1.44277g/g creatinine, respectively. 3. In the case of individual susceptibility markers as CYPlAl, 41.8% of them has homozygous wild type(W) and who has heterozygous variant type(H) was 35.4% and 22.8% of homozygous variant type(M) genetic type. In the case of CYP2E1, 62.82% of them has homozygous wild type(D) type, 34.62% of each has heterozygous variant type (DC) and 2.56% of them has homozygous variant type (CC). Who doesn't have GSTM1 gene was 46.25% and who has GSTM1 gene was 53.75%. Who doesn't have GSTT1 gene was 40.0% in study groups and who has GSTT1 gene was 60.0%. Who has W genetic type, which is homozygous wild type of GSTP1, was 69.18% and H genetic type, which is heterozygous variant type was 28.4%. M genetic type which is homozygous variant type was 2.4%. 4. Concentration differences of metabolites such as t,t-MA and HA in urine, which is generated by individual susceptibility marker of GSTM1, GSTT1, GSTP1 gene of Phase I and CYP1A1, CYP2E1 gene of Phase II, was examined. As a result, GSTP1 and GSTM1 indicate slight differences depend on the amount of metabolites in urine, it was not statistically significant.

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휘발성유기화합물(VOCs)의 측정방법에 따른 유물 전시관 내 농도 분포 특성 비교 (Comparison of VOCs Concentration Characteristic According to Measurement Methods in Exhibition Hall)

  • 임보아;이선명
    • 보존과학연구
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    • 통권35호
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    • pp.25-44
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    • 2014
  • 이 연구에서는 유물 전시관을 대상으로 Active type과 Passive type에 의한 VOCs의 측정 분석법을 사용하여 전시실 내 외의 연중, 계절별 농도를 조사하고 측정방법에 따른 농도 비교를 통해 측정방법 간의 상관성을 비교하였다. 그 결과, Active type에 의한 전시실 TVOC의 연중 평균 농도는 $906.5{\mu}g/m^3$으로 대부분 조사 기간 동안 환경부 기준을 1.8배 이상 초과하였다. Active type에 의한 전시실의 ${\Sigma}VOCs$ 농도는 Passive type 보다 높았다. 일부 VOCs는 시간의 경과에 따라 감소하나 일시적인 상승 경향을 나타내기도 했다. Active type에 의한 전시관의 연평균 I/O비는 TVOC 9.0, ${\Sigma}VOCs$는 34.0으로 조사되어 ${\Sigma}VOCs$가 전시실 내부에서 다량 발생하는 것을 확인하였다. 두 방법 간의 상관성 분석 결과, ${\Sigma}VOCs$의 상관계수는 0.367이었으며 톨루엔은 0.567로 두 분석 방법 간의 연관성이 가장 큰 것으로 조사되었다.

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인도네시아 식민시대의 공간양식 특성에 관한 연구 (A Study on the characteristics of space design in the colonial period in Indonesia)

  • 강유나;오혜경
    • 한국실내디자인학회논문집
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    • 제20권3호
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    • pp.190-197
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    • 2011
  • The purpose of this study is to examine the characteristics of space design appearing in facade and interior composition factors of buildings in the colonial period in Indonesia. Research method is a field study, and subjects of the study is 14 buildings built in the colonial period located in Jakarta. The research result is as follows. First, Facade is divided into C type (colonial style), CT type (colonial style + traditional style), CA type (colonial style + art deco style), and CTA type (colonial style + traditional style + art deco style). Among them, CT type which shows both a colonial style and traditional style accounts for the most. As for Java traditional style mainly shows Joglo roof style and bratticing decoration on top of gates, and the colonial style presents both an Amsterdam canal housing style such as narrow Facade and unusual Gable, and a classical style such as pediment, entablature, and columns. Second, interior space is divided into C type (colonial style), CT type (colonial style + Indonesian traditional style), A type (art deco style), and CA type (colonial style + art deco style). Among them, CT type was also accounted for the most. Selected traditional style is a shape of bratticing decoration on top of gates and a shape of tenon of Joglo housing structure. Colonial style showed classical style such as exposed crossbeams, columns, and pilasters, and as for unique decoration, there are Ancona decoration and Delft tile decoration. On one hand, art deco style used typical art deco factors such as contrast of various materials and complementary color or golden color use as well as zigzag or vertical lines and geometric ornament by combining with colonial style or traditional style. It is expected that such research result will be a practical reference data when Korean construction companies or interior design companies advance Indonesia.

병원전문화 전략유형의 적합성과 조직성과 분석 (The Fitness and Organizational performance Analysis of Hospital Specialization Strategy Types)

  • 김한성;김영훈;우정식;이해종;윤병준;한휘종;최영진
    • 한국병원경영학회지
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    • 제17권4호
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    • pp.87-115
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    • 2012
  • This research classified hospital specialization strategy types through cluster analysis, analyzed fitness of hospital specialization strategy types for external environment or organizational structure, and examined relation between hospital specialization strategy types and organizational performance. This research surveyed 1,437 hospitals which have more than 30 patient's bed and practice national health service in Korea. Specifically, this research divided into two part : external fit - analysis of relation between external environment and specialization strategy, internal fit-analysis of relation between organizational structure factors and specialization strategy. also, as the organizational performance for achieving specialization strategic purpose, not only the productivity, efficiency, profit but also the medical quality was considered. In case of external fit, many hospitals chose integration type if there are a lot of competitive hospitals and regional population. Particularly, if there are many competitive hospitals, concentration type is chosen. In contrast, if there are many doctors in the region, differentiation type is chosen. In case of internal fit, according to organization type and patient's bed number, hospitals chose different types. If it is a general hospital and has a few bed number, generalization or concentration type is chosen. Tertiary hospital or the hospital with many patient's bed chose differentiation type. According to the number of specialists, if there are a few specialists, generalization or concentration type is chosen. If there are many specialists, differentiation type has high fitness for the hospital. In relation to strategy types and organizational performance, differentiation type has best result. Differentiation type has a good result in 7 items out of 11.

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유행정보원 이용도, 의류광고 선호도와 유행선도력과의 관계 (The Relationships Between the Use of Fashion Information, Preference of Fashion Advertising and Fashion Leadership)

  • 박옥환;이정순
    • 한국생활과학회지
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    • 제2권1호
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    • pp.53-61
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    • 1993
  • The purpose of this research was to find out relationships between the use of fashion information, preference of fashion advertising and fashion leadership. This research was carried out by both the theoretical and empirical study. For the theoretical study, the research of Fashion Leadership was based on the fashion opinion leadership and innovativeness. The study include the analysis of variables influencing fashion leadership, such as use of fashion information preference of fashion advertising, and demographic variables. For the empirical study, fashion leadership was measured by fashion opinion leadership and innovativeness. The variables influencing on the fashion leadership were measured by use of fashion information (marketer-dominated information, consumer-dominated information, neutral information), preference of fashion advertising (dramatic type, feeling type, goods demonstration type), demorgraphic variables (age, years of education, family income, job, marriage). Data were obtained from 313 female in chungbuk area by self-administered questionaire. The datacollected through the questionaire were analyzed by the stastical technique - ANOVA and Duncantest, t-test, stepwise multiple-regression. The results of the study were as follows; 1. There were significant differences on the fashion leadership, fashion innovativeness, fashion opinionleadership according to the marketer dominated information and neutral information. There were significant differences on the fashion leadership, fashion innovativeness, fashion opinion leadership according to the preference of dramatic type. There were significant differences on the fashion opinion leadership according to the preference of goods demonstration type. 2. 30 percent of the total variance of fashion leadership was explained by the six variables: fashion magazines, TV & Radio advertising, clothing of TV talent & singer, years of education, dramatic type, catalogue. 3. When the subjects were divided into five groups(innovative communicators, innovators, opinion leaders, followers, indifferents) according to their innovativeness scores and opinion leadership scores, there were significant differences among groups in most of use of fashion information, preference of fashion advertising variables and in some of demographic variables. 4. There were significant interactions between marketer-dominated information and dramatic type and were significant interactions in goods demonstration type, marketer-dominated information and dramatic type. There were significant interactions between consumer-dominated information and dramatic type. This ariables has the effect on Fashion Leadership by the interactions.

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Type D 성격 유형에 따른 간호사의 공감 피로, 소진, 공감 만족 및 직무 스트레스 (Effects of Type D Personality on Compassion Fatigue, Burnout, Compassion Satisfaction, and Job Stress in Clinical Nurses)

  • 김성렬;김혜영;강정희
    • 간호행정학회지
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    • 제20권3호
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    • pp.272-280
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    • 2014
  • Purpose: This study was done to identify the effects of Type D personality on compassion fatigue, burnout, compassion satisfaction, and job stress in clinical nurses. Methods: A descriptive cross-sectional design was used. Data were collected from a convenience sample of 172 clinical nurses working in two tertiary hospitals. The structured questionnaires included Type D personality scale, compassion fatigue, burnout, compassion satisfaction, and job stress scales. Results: About 79.7% of participants were classified as Type D personality group. The Type D personality was not related to general characteristics of clinical nurses. The Type D personality group showed statistically significant higher compassion fatigue, burnout, and job stress and lower compassion satisfaction compared to the non-Type D personality group. In addition, compassion fatigue and burnout were positively correlated with job stress and compassion fatigue was positively correlated with burnout. However, compassion satisfaction was negatively correlated with burnout. Conclusion: As the prevalence of Type D personality is high in clinical nurses, it is necessary to assess stress-related personality. In addition, management for the nurse with Type D personality is required to alleviate compassion fatigue, burnout, and job stress and to improve compassion satisfaction.

초고압 초전도 변압기용 연속 디스크 권선 (Continuous Disk Winding for High Voltage Superconducting Transformer)

  • 황영인;김우석;이승욱;장데레사;한진호;주형길;최경달;한송엽
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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    • pp.1234-1236
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    • 2005
  • High temperature superconducting(HTS) windings for an HTS transformer which have been developed have two kinds of type, one is the layer type and the other is disk type. The disk type windings have advantages over the layer type ones for a power transformer such as good insulation and limit of voltage stress. But this kind of HTS winding generates excessive AC losses caused by strong magnetic field component perpendicular to the surface of the HTS wire. Nevertheless, the layer type windings have adopted for an HTS power transformer so far because of the small AC losses of the HTS windings. We propose a new winding method for a high voltage HTS transformer which has advantages of both type of HTS windings, and we call it continuous disk type HTS winding. This new type of HTS winding consists of pile of lots of HTS disk windings which have no resistive joint between them. A prototype of an HTS winding was fabricated by the new winding method we proposed and characteristic test was carried out. The test result shows that the new type HTS windings can be applied to HTS power transformers, especially to the high voltage ones.

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Evaluation of failure mode of tunnel-type anchorage for a suspension bridge via scaled model tests and image processing

  • Seo, Seunghwan;Lim, Hyungsung;Chung, Moonkyung
    • Geomechanics and Engineering
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    • 제24권5호
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    • pp.457-470
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    • 2021
  • In this study, the pull-out behavior of a tunnel-type anchorage for suspension bridges was investigated using experimental tests and image processing analyses. The study focused on evaluating the initial failure behavior and failure mode of the tunnel-type anchorage. In order to evaluate the failure mode of tunnel-type anchorage, a series of scaled model tests were conducted based on the prototype anchorage of the Ulsan Grand Bridge. In the model tests, the anchorage body and surrounding rocks were fabricated using a gypsum mixture. The pull-out behavior was investigated under plane strain conditions. The results of the model tests demonstrate that the tunnel-type anchorage underwent a wedge-shaped failure. In addition, the failure mode changed according to the differences in the physical properties of the surrounding rock and the anchorage body and the size of the anchor plate. The size of the anchor plate was found to be an important parameter that determines the failure mode. However, the difference in physical properties between the surrounding rock and the anchorage body did not affect its size. In addition, this study analyzed the initial failure behavior of the tunnel-type anchorage through image analysis and confirmed that the failure was sequentially transferred from the inside of the tunnel to the surrounding rock according to the image analysis. The reasonable failure mode for the design of the tunnel-type anchorage should be wedge-type rather than pull-out type.

Design and fabrication of race-track type field coil for the high temperature superconduction generator

  • Baik, S.K.;Jo, Y.S.;Ha, H.S.;Lee, E.Y.;Jeong, D.Y.;Kwon, Y.K.;Ryu, K.S.;Sohn, M.H.
    • 한국초전도학회:학술대회논문집
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    • 한국초전도학회 2000년도 High Temperature Superconductivity Vol.X
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    • pp.248-251
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    • 2000
  • The fabrication and characteristics of HTS race-track type field coil for generators was carried out. Field coils are composed of 3 pancake coils wound by 37-filamental Bi-2223/Ag-alloy tapes. The winding machine is horizontal type. The critical currents (I$_c$) of the superconducting tapes were measured with variation of bending strain and external magnetic fields. I$_c$ of both whole field coils and 3 pancake coils were measured as a function of temperature. At 77K under the self-field, I$_c$ of whole field coils was 12A, while in the case of middle pancake coil, I$_c$ was 15A. The distribution of magnetic field B was obtained, using 3-D FEM. Our simulation showed that maximums of B${\bot}$A in x-y plane were locally distributed in both the upper and the lower coils. In addition, the fabrication processes and the characteristics of field coil are described.

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인삼사포닌이 몰핀의 급만성 내성 형성에 미치는 영향 (Effect of Ginseng Total Saponlns on the Development of Acute and Delayed Types Tolerance to Morphine)

  • 김학생;오기완;이명구;최강주;김숙장
    • Journal of Ginseng Research
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    • 제13권2호
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    • pp.239-241
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    • 1989
  • Naloxone partially antagonized the analgesic effect of a large dose of morphine and inhibited the development of an acute type tolerance. Ginseng total saponins did not antagonize the analgesia of a large dose of morphine but inhibited the delrelopment of acute and delayed types tolerance. The morphine analgesia and the development of acute type tolerance were affected by the opioid receptor antagonist, naloxone, but the development of acute type tolerance was not. Ginseng total saponins partially inhibited the development of the delayed type tolerance that was not inhibited by naloxone, but also partially suppressed the development of the acute type tolerance that was completely inhibited by naloxone. These results imply that the partial inhibition of the development of the acute and delayed types tolerance by ginseng total saponins is not mediated by the opioid receptors.

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