Today, there is a demand for education that fosters the ability to think for oneself.　The Japanese pill bugs are of great interest to children, and have been the subject of much research, including free research by children and students. In this study, we conducted an experiment to verify the results of students' research on the feeding preference of the pill bugs, as well as information on the Internet. As a result, it was found that some of the study results reported by students were not in agreement with those of the present study, and that the inaccurate information on the Internet needs to be modified. Inaccurate information may give children wrong impressions, and therefore, providing reproducible and reliable information should be important. A platform such as a science journal would contribute to such a purpose. The study on the pill bugs has already been conducted in a science class at a junior high school in Miyazaki Prefecture with certain successful results, suggesting its effectiveness for the biological education of children and students. This publication platform would be useful to accumulate the research results of children and students and to contribute to education through experience of writing papers.

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This study aimed to evaluate a two-stage tourniquet that applies the muscle-milking mechanism of the upper arm. We hypothesized that the milking effect increases blood flow and makes it easier to dilate the peripheral veins because muscular motion compresses a wide range of veins. Method：This study included 38 clinical nurses. A two-stage tourniquet, combining an elastic with an 80 mmHg blood pressure cuff, was compared to a conventional elastic tourniquet. The nurses marked as many veins as possible for peripheral intravenous catheterization ( PIVC ) . The marked veins were evaluated using ultrasound image analysis, video analysis with a near-infrared camera, and a subjective palpable scale. Results：Data analysis was conducted on 37 participants. The time required to determine the puncture site for the PIVC was significantly shorter with the two-stage tourniquet, and the nurse-assessed palpable scale of the vein was significantly higher. No significant differences were observed in the depth from the skin surface to the top or cross-sectional area of the vein. Conclusion：The two-stage tourniquet enhanced the nurse-assessed palpation scale and reduced the duration required to select the peripheral vein for PIVC. This method is expected to improve the first-time success rate of PIVC and aid the development of medical devices that assist in venipuncture, such as electronic tourniquets.

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