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        CMI에 依한 高校生의 精神健康診斷에 關한 硏究

        吳碩煥,朴助烈,金錫柱,張貞富,朴同烈,柳志珍 大韓神經精神醫學會 1967 신경정신의학 Vol.6 No.1

        As a preliminary approach to screening of mental disturbance on a mass scale that aims to be applied to school population including the middle school, the high school and the college students, the authors applied CMI to 338 high school students consisting of 160 males and 178 females that were randomly selected both from schools locating in Pusan City and from those in rural areas outside of the city, and obtained statistical data from results on CMI scores of the total subjects. On the basis of distribution of total affirmative responses of the total subjects a stratified sample of 40 subjects was chosen for further study which consisted of psychiatric evaluation through individual interview and subsequent statistical analysis of data obtained in an attempt to study the validity of this instrument in detecting mental disturbances in this selected adolescent population. The conclusions are as follows: 1. The mean number of CMI scores for the total 338 subjects was 29.10. Any significant difference was not observed between the mean number of responses for male students and that for female students. 2. There was also not any significant difference between the mean CMI score for the rural group and that for the urban group. 3. In the chosen sample of 40 subjects who were given psychiatric evaluation the mean CMI score of the normal group was 25.76 and the abnormal 60.73. Thus statistically significant differences in responses to CMI could be observed in the normal and abnormal group. This seems to confirm other reports that CMI has been found useful in detecting mental disturbances on a mass scale and may suggest the validity of CMI to segregate mentally disturbed persons on a mass scale from such isolated population as the high school. 4. It was observed in the 40 psychiatrically evaluated subjects that in comparison with the individual responses to items of C.I.J. and M-R of the normal group those of the abnormal group revealed a tendency to increase. This may, above all, lead us to suggest that in many cases of mental disturbance their psychiatric problems tend to be so treated that they are channeled out through somatic complaints, especially through those of autonomic visceral innervation.

      • KCI등재

        精神科 入院의 季節的 變動

        吳碩煥,朴助烈,裵大均,金錫柱,韓東大,張貞富,柳志珍 大韓神經精神醫學會 1964 신경정신의학 Vol.3 No.2

        (1) Authors studied seasonal fluctuation of psychiatric admission preliminarily, based on data of admission to Pusan area for a 4 year period of 1960-1963, and obtained following impressions. (2) The rate of admission in Pusan area and its seasonal fluctuation appear quite similar to those reported by investigators for European, American and Japanese cities. Thus the admission increases in spring and reaches the maximum in May and then gradually decreases toward the end of year. (3) The data obtained by statistical analysis of the seasonal fluctuation in Pusan area were compared with those of foreign ones in order to observe how to be related to the latitude of the locality. It is the general tendency that the lower latitude showed increase of admission in earlier months of the year than the higher latitude did. (4) It is a impression that the admission of affective psychoses are more sensitive to the climatic factors than the schizophrenics. (5) It is conjured by the authors that the socio-cultural and economic factors should be considered to give an account of the seasonal fluctuation of psychiatric admission.

      • AN EXPERIMENTAL INVESTIGATION ON LOW TEMPERATURE CDPF REGENERATION UTILIZING HYDROGEN

        Zhijin Liu(유지진),Kwang Min Chun(전광민),Soonho Song(송순호) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5

        Soot particles accumulated in a DPF should be removed after a certain service time due to high pressure drop. The most common method is oxygen active regeneration which causes high fuel penalty and sometimes DPF cracking or melting. In this study, the authors aim to investigate the low temperature regeneration with hydrogen, which could prolong the DPF lifespan and facilitate CDPF regeneration efficiency. The DPF used in this research was coated with Pt/Al₂O₃ 25g/ft³ and all experiments were performed on engine test bench. Results showed that hydrogen in exhaust gas can be ignited at about 120℃ and regeneration can be realized at about150℃ or even lower. There was a large temperature drop (about 40℃) at the front end of DPF after hydrogen oxidized. DPF maximum inside temperatures depend on the hydrogen concentration. Therefore, the DPF maximum inside temperature can be controlled by the supplied hydrogen concentrations.

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