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콘크리트 구조물의 환경조건에 따른 자착형 방수시트의 적용성 평가에 관한 연구
정현상(Jung Hyoun-Sang),박진상(Park Jin-Sang),오상근(Oh Sang-Keun),임남기(Lim Nam-Gi) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.12
While study about property of matter of self-adhesion waterproofing sheet is advanced continuously in Korea, study about property of matter by environmental condition in concrete structure is not advanced. But, recently, study by environmental condition in concrete structure was advanced partially in process for being registered as new construction technology. Before application evaluation of self-adhesion waterproofing sheet by environmental condition in concrete structure, type of self-adhesion waterproofing sheet used in Korea was reviewed in detail, basic requirement which self-adhesion waterproofing sheet should have basically was reviewed in detail and application evaluation by environmental condition in concrete structure was implemented, It is judged that self-adhesion waterproofing sheet should have adhesion about low temperature environment and humid environment and enough ability to cope with vapor dispersion, emission, influx water diffusion prevention and structure motion basically. It is judged that study where environmental condition in structure is considered enough and more specifically than now should be advanced from now.
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콘크리트 구조체 시공 현장 환경을 고려한 자착형 방수시트의 성능평가 지표 제안 연구
정현상(Jung, Hyoun-Sang),오상근(Oh, Sang-Keun),임남기(Lim, Nam-Gi) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.11
The self-adhesion waterproofing sheet had been used in waterproofing construction site, However, though it satisfied with KS quality level, problems of leakage defect due to environmental properties were pointed by user. Therefore, in this study, environmental condition of substrate of concrete structures is analyzed by AHP method, and conditions of three kinds of low temperature, humidity and movement were drawn as environmental performance index effecting to self-adhesion waterproofing sheet. We had a assesment three kinds of self adhesion waterproofing sheet(butyl rubber, rubberized sheet, asphalt sheet) under upper three index. Through experimental test of self-adhesion waterproofing sheets used the test methods which were made of performance index, environmental problems of each waterproofing sheet due to water-leakage were known in field of waterproofing construction.
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황성진(Hwang, Seongjin),정현상(Jung, Hyunsang),전재승(Jeon, Jaeseung),김형순(Kim, Hyungsun) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
Dye-sensitized solar cells (DSSC) show great promise as an inexpensive alternative to conventional p-n junction solar cells. Investigations into the various factors influencing the photovoltaic efficiency have recently been intensified. The conventional absorber electrode in DSSC is composed of compacted or sintered TiO₂ nanopowder that carries an anchored organic dye. The absorbance of incident light in the DSC is realized by specifically engineered dye molecules placed on the semiconductor electrode surface (TiO₂). The dye absorbs light at wavelengths up to about 920nm, the energy of the exited state of the molecule should be about 1.35eV above the electronic ground state corresponding to the ideal band gap of a single band gap solar cell. The dye molecules ar adhered onto the nanostrutured TiO₂ electrode by immersing the sintered electrode into a dye solution, typically 3mM in alcohol, for a long enough period to fully impregnate the electrode. However, the concentrations of the dye is slightly changed due to the evaporation of the alcohol. The dye is more expensive than other materials in DSSC and related to the efficiency of DSSC. Therefore, the concentrations of the dye should be carefully measured. In this study, we investigated to the dye loading on fired TiO₂ powder as a function of temperature by the TG-DTA and the dye solution by UV-visible spectroscopy after the impregnation process. The dye loading is related to the porosity of the nanostructured TiO₂ electrode.
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정현상,장환일,서병희 大韓神經精神醫學會 1991 신경정신의학 Vol.30 No.6
It has been well known that infertile women experience not only emotional disturbances but also stresses from familial and social enviornments. The purpose of this study is to promote understanding about the effects of demographic variables and variables of the attitudes of family members on the psychiatirc symptoms which infertile women experience. The subjects were 185 women with primary infertility who had visited the Infertility Clinic of Kyung Hee University Hospital from April 1987 to April 1990. Self-report questionnaires and Symptom Check List-90-Revision(SCL-90-R) were used as the survey instruments. The results were as follows : 1) The Demographic Variables : In age distribution, the most frequent age group was thirties. The mean period of infertility was 2.49±1.54 years. 2) The Variables of Attitudes of Family Members : Most patients revealed that their husbands were cooperative(85.9%), their feelings toward husband were not specific(5.7%), they had not lived together with parents-in-law(81.7%), the concern of their parents-in-law and others within the family of husband were serious(above 50%), while the stress from the family of husband was trivial(71.9%). 3) The Correlation Coefficients between Variables and Symptom Dimensions of the SCL-90-R : The variable of infertile period was statistically significant (P<0.01) in proportion of its length in all 9 symptoms dimensions. The variable of ‘Cooperation of the husband’was significant(P<0.01) in 4 dimensions(Somatization, Depression, Hostility, Psychoticism) according to the degree of their indifference to treatment. The variable of ‘Stress from family of the husband’was significant in all 9 symptom dimensions in proportion to it's severity. The variables which did not show any statistically significant correlations were age, occupation, residence, ‘living with parents-in-law’, ‘concern of parents-in-law’, ‘feeling toward husband’and ‘concern of others within the family of husband’. The variable of ‘concern of others within the family of husband’was significant in all but 2 dimensions(Somatization and Paranoid ideation) according to the degree of over-concern. But, since it had a significant correlation with the variable of ‘Stress from family of husband’, it revealed a significant correlation as the effect of the variable of ‘Stress from family of husband’. Therefore it had not a significance as an independent variable. In conclusion, the author hypothesized that the variables of demographic data and the attitudes of family members will influence the manifestations of psychiatric symptoms in infertile women measured by SCL-90-R. It was identified that the psychiatric symptom complained by infertile women were increased according to the length of infertility, the severity of stress from the family of husband and husbands' concern for the treatment.
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