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エチオピアのソーダ湖に生息するリムノスピラ属菌株の分子同定と培養、模擬屋外光条件下での成長評価
Full text link創価大学博士（工学）Malnutrition, especially among children with limited dietary diversity, is a significant problem in regions like Ethiopia. Arthrospira, a protein-rich cyanobacterium, could enhance nutrition through biomass production, but its use as food in Ethiopian soda lakes is underexplored. This study involved morphological isolation, growth rate screening, 16S rRNA identification, and biochemical analysis of Arthrospira-like isolates (Chapter II, Study 1). It was followed by an evaluation of the effects of varying simulated light conditions (full sunlight, greenhouse, mid-day shade in a greenhouse, and full-time shade in a greenhouse) on the growth and biochemical composition of Limnospira fusiformis strain LC-30, selected from Study 1 (Chapter III, Study 2). A total of 100 Arthrospira-like strains were isolated, with four strains exhibiting the highest specific growth rates selected for molecular identification, all confirmed as Limnospira fusiformis. These strains underwent biomass screening and biochemical analysis, showing results consistent with previous studies. Notably, strains LC-30 and LA-08 exhibited high protein and phycocyanin contents (Study1). Whole-time shade resulted in the highest protein (64.80% ash-free dry weight) and phycocyanin content (97.20 mg g⁻¹). The two-stage cultivation method for phycocyanin demonstrated a 32.7% increase in content compared to the simulated study (study 2). Identifying fast-growing Limnospira fusiformis strains and optimizing light conditions for maximizing biomass, phycocyanin and nutritional value highlights the potential of indigenous strains as nutritional supplements.doctoral thesi
NAKANISHI Hisae (Author), “Series Introduction to War Studies: Islamic World and Peace (Sogensha)”
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Practical Applications of AI in Education: Case Studies from a Junior College
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International Comparative Study on Help-Seeking Preferences and Well-Being among High School Students
Full text linkHigh school students are prone to various worries and problems, which may reduce their sense of subjective well-being and cause mental health problems. In order to solve their own difficult problems, it is necessary for them to seek help from others appropriately to solve their problems and improve their mental health. In this study, we compared (1) the degree of helpseeking preferences and well-being of high school students in Japan and India, two countries with very different economic, social, and cultural environments, and (2) the relationship between help-seeking preferences and well-being of high school students in the two countries. The results showed that (1) the values of the “desire and attitude toward helping” factor of help-seeking preferences were significantly higher in India and the “resistance to helping relationships” factor was significantly lower in Japan, than in India. On the other hand, the values of the “flow” factor were significantly higher in Japan, and the values of the “sense of accomplishment,” “good relationships,” and “mental and physical health” factors were significantly higher in India.(2) As for the correlations between the “help-seeking preferences” (two factors) and “well-being” (five factors), Japan showed higher statistical coefficient. On the other hand, India showed lower statistical coefficient. Based on these results, we discussed the assistance measures to improve the well-being of Japanese high school students from the viewpoint of their help-seeking preferences.departmental bulletin pape
Effectiveness of ICT Use for Teachers in Music Making in Elementary Music Studies
Full text linkIn this paper, we have summarized the current situation in which music making is not active and ICT utilization is not necessarily advanced in elementary school music courses. Based on this background, we designed a music-making class using ICT that is easy to operate in order to support teachers who are not good at music-making and using ICT to engage in music-making classes. In addition to surveying in-service teachers in charge of elementary school music courses about the specific situation of music making and ICT use at their school sites, we also sought their opinions about the effectiveness of the classes they designed. The results revealed situations where it was difficult to practice music making and where ICT utilization was insufficient due to the lack of a suitable environment. In addition, the class designs were generally evaluated positively. In the future, we plan to verify the effectiveness of the program by implementing educational practices based on the lesson design for students in the teacher training program,and to make improvements based on the results.departmental bulletin pape
