152 research outputs found
Temperature and Concentration Distributions in Fixed-bed Catalytic Reactors : Comparison of Calculated with Experimental Results
Fixed-bed catalytic reactors are most widely used for vapor-phase reactions catalyzed by solid particles. Although theoretical studies concerned with the design method have been extensively performed, few systematic experimental substantiations have been presented. The purpose of this paper is to obtain the necessary data for the reactor design and to evaluate the accuracy of the design method. The radial temperature profiles and the mean conversions at various catalyst heights were measured in a 5.0 cm I.D. reactor where the hydrogenation of benzene takes place on a nickel-kieselguhr catalyst. The basic design data, the rate of reaction and the heat transfer characteristics in a fixed bed were also presented. A numerical design method used here is similar to those developed by Smith and Walas with suitable modification. Profiles of temperature and conversion predicted by the numerical method were in good agreement with the experimental data
30-Item General Health Questionnaire Scores in Male and Female University Freshmen
The thirty-item General Health Questionnaire (GHQ30) was conducted on 1,432 university freshmen twice in June 1998 and in January 1999 to investigate their mental health conditions after matriculation. After classifying the results by the time of investigation and gender, logistic regression analysis was performed to extract question items correlated with high GHQ scores. As a result, male students investigated in June showed the correlations among high GHQ scores and the following 5 items:subjective health conditions (SC), satisfaction with matriculation (SM), enthusiasm for studies (ES), living with (family or alone) (LW), and the difference between whether they passed the entrance examination directly upon graduation or not (EE), otherwise, that in January correlated with SC and SM only. Female students investigated in June showed the correlations among high GHQ scores and the following 3 items: SC, SM, and ES, otherwise, that in January correlated with SC, ES, and LW. In addition, factor analysis was performed after classifying the replies to GHQ30 by the time of investigation and gender. As a result, uselessness was obtained as the first factor in all students, and the following factors were respectively obtained as the second factor: human relationship and low activity in male students investigated in June, low activity in male students investigated in January, intimacy and high-tension in female students investigated in June, and low-tension in female students investigated in January
Creating Musicals Using Old Tales and Modern Music, and heir Effects on Learning Report 3: Comparative Analysis of the Past Two Years’ Questionnaire Results
This study investigates how making original musicals and performing in them affect students’ cognitionand willingness. This study has evaluated students’ learning processes in the course from three viewpoints:“motivation for learning,” “creation of ideas about music based on specialty,” and “cognition of its utilityin nursery settings.” The students reported that they are tackling with tasks that enhance their skills as nurseryspecialists, and that they are learning new ideas of expressing music in nursery settings in the first survey. Thesecond survey, which employed a free writing, supported the results of the first survey. The present study has given the same tasks as the first year to the students who belong to the author’sseminar in 2019. The results show a slight difference from the first year’s in the study processes, but, in theend, they show similar changes in the students. The results of the two years’ investigations demonstrate theeffectiveness of making an original musical and performing in it, whoever may be involved, and whatever musicalthey may make. It is an effective, high-quality educational activity that accompany experiences.departmental bulletin pape
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