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Evaluation of the biofilm detection capacity of the Congo Red Agar method for bovine mastitis-causing bacteria
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授業評価の質的解釈 : 授業評価と学生の受講動向・授業感想との接続
Get PDFTo interpret the grades of a university class evaluation qualitatively, we examined whether a connection exists between class evaluations, students’ class attendance attitudes, and students’ class impressions. Evaluation factors that we specifically examined were activeness, learning motivation, and satisfaction level. Students who assigned high marks to their activeness in the class evaluation handed in minutes-papers for more than half of the classes. Students who assigned high marks to their motivation for learning in the students’ class impressions gave higher scores to the learning motivation during the class evaluation. Furthermore, in the students’ class impressions, students who expressed high satisfaction level in the class evaluation wrote down positive impressions of the class, their pleasure in learning, and their appreciation of the teacher. Although the present data analysis is in its initial stages, we ascertained relations between class evaluation scores and the student characteristics. The information is expected to be helpful for pursuing more effective improvement of classes using class evaluations
Building a Broad-Based Disaster Prevention Collaboration System in the Kita-Shiribeshi region : Starting to Work on Policy Innovations
No full text2022年度第3回研究会報告
線虫Caenorhabditis elegansの電場を利用した分散行動に関する研究
No full textInteractions between different animal species are a critical determinant of each species’ evolution and range expansion. Chemical, visual, and mechanical interactions have been abundantly reported, but the importance of electric interactions is not well understood. Here, I report the discovery that the nematode Caenorhabditis elegans transfers across electric fields to achieve phoretic attachment to insects. First, I found that dauer larvae of C. elegans nictating on a substrate in a Petri dish moved directly to the lid through the air due to the electrostatic force from the lid. To more systematically investigate the transfer behavior, I constructed an assay system with well-controlled electric fields: the worms flew up regardless of whether a positive or negative electric field was applied, suggesting that an induced charge within the worm is related to this transfer. The mean take-off speed is 0.86 m/s, and the worm flies up under an electric field exceeding 200 kV/m. This worm transfer occurs even when the worms form a nictation column composed of up to 100 worms; I term this behavior “multi-worm transfer.” These observations led us to conclude that C. elegans can transfer and attach to the bumblebee Bombus terrestris, which was charged by rubbing with flower pollen in the lab. The charge on the bumblebee was measured with a coulomb meter to be 806 pC, which was within the range of bumblebee charges and of the same order of flying insect charges observed in nature, suggesting that electrical interactions occur among different species
