- 著者
- Toshiaki Nishi Atsushi Matsumura Manami Koshida Tatsufumi Matsumoto Takeshi Yamaguchi
- 出版者
- Japanese Society of Tribologists
- 雑誌
- Tribology Online (ISSN:18812198)
- 巻号頁・発行日
- vol.18, no.6, pp.353-364, 2023-10-31 (Released:2023-10-31)
- 参考文献数
- 31
- 被引用文献数
- 2
Sportswear is widely used in various sports and serves multiple functions. A key feature is the ability to absorb sweat during physical activity, which can, however, cause discomfort due to stickiness. This study focuses specifically on the stickiness caused by sweat between sportswear and the skin by objectively evaluating stickiness using specific physical parameters and correlating them with sensory evaluation values. Moreover, there is little research on the adhesion force between sportswear and human skin. Therefore, this study aims to achieve the following objectives: (1) investigate the relationship between the adhesion force between human skin and fabrics and the sensation of stickiness; (2) examine the relationship between the adhesion force between artificial skin and fabric and that between human skin and fabric; and (3) clarify the impact of fabric wettability and geometry on the adhesion force under wet conditions. Experiments reveal that the sensory evaluation value and adhesion force against human skin corresponded. Additionally, a positive correlation was found between the adhesion force against human skin and an artificial skin sheet. These experimental results suggest that fabrics with a lower adhesion force can be achieved by decreasing the load area ratio at 30% Φ0.3 and increasing the contact angle and meniscus height.
- 著者
- Arata Tarui Atsushi Matsumura Sohei Asakura Kenji Yamawaki Rintaro Hattori Hiroyuki Daimon
- 出版者
- Japanese Society for Root Research
- 雑誌
- Plant Root (ISSN:18816754)
- 巻号頁・発行日
- vol.7, pp.83-91, 2013 (Released:2013-12-24)
- 参考文献数
- 30
- 被引用文献数
- 4 4
Legume-grass mixed cropping has significant advantages that affect crop yield and soil resources. Generally, grasses grown with legumes take up more nitrogen than those grown under sole cropping. We focused on the effect of cutting hairy vetch during a vigorous growth stage on N uptake in oat under mixed cropping. We evaluated the amounts of N transferred from hairy vetch to oat by using a 15N dilution method. Cutting hairy vetch increased the number of tillers and dry weight of oat, but total N content was not significantly higher than that under mixed cropping without cutting. In contrast, the amount of N transferred to oat was increased by cutting. Estimated amounts of N transferred to oat were 2.7 g m-2 with cutting of hairy vetch and 0.8 g m-2 without cutting. Cutting half of the oats under sole cropping did not indicate the transfer of rhizodeposited N in oat to the residual plants. In addition, cutting hairy vetch increased the amounts of accumulated solar radiation in the middle canopy of the mixed cropping plots. Therefore, in a hairy vetch and oat mixed cropping system, cutting of the hairy vetch might enhance growth of oat due to the transfer of N from hairy vetch and the reduction of light interception to the oat canopy. N fertility enhancement of the soil by cutting of the legume would be valuable for low-input crop production.