Safety and hygiene of food

東京海洋大学名誉教

Limit theorem of the max-plus walk (Mathematical structures of integrable systems, its deepening and expansion)

Mathematical structures of integrable systems, its deepening and expansion. September 9-11, 2019. edited by Takao Suzuki. The papers presented in this volume of RIMS Kôkyûroku Bessatsu are in final form and refereed.The max-plus algebra is a semiring on Rmax = R⋁{-∞} with addition ⊕ and multiplication ⊗ defined by ⊕ = max and ⊗ = +, respectively. It is known that eigenvalues of max-plus matrices are equivalent to the maximal average weight of the corresponding directed graph. In [9], authors introduced the max-plus walk which is a walk model on one dimensional lattice on Z over max-plus algebra, and discussed its properties such as the conserved quantities and the steady state. In this paper, we will discuss the limit measure of the max-plus walk

酵素電極によるD-およびL-アミノ酸計測のための電圧, 電流条件

東京水産大学水産学研究科食品生産学専攻東京水産大学水産学研究科食品生産学専攻東京水産大学水産学研究科食品生産学専

Two siblings with vitamin B6-nonresponsive cystathionine β-synthase deficiency and differing blood methionine levels during the neonatal period

We present two siblings with vitamin B6-nonresponsive homocystinuria due to a deficiency of cystathionine β-synthase who had different levels of methionine in the blood during the neonatal period, even though they had the same genetic defect. One of them was missed in the screening of newborns for homocystinuria. Special care should be taken in screening neonates for homocystinuria using the blood level of methionine

バイオマスセンサーを応用したピリドキシンの定量

東京水産大学食品生産学科東京水産大学食品生産学科マルハ株式会社中央研究所東京水産大学食品生産学科東京水産大学食品生産学

フローサイトメトリーによる酵母生菌数の迅速測定

東京水産大学食品生産学科東京水産大学食品生産学科東京水産大学食品生産学科東京水産大学食品生産学科東京水産大学食品生産学

Shoulder and elbow pain in elementary school baseball players : The results from a nation-wide survey in Japan

Background: Despite recommendations on how to prevent baseball injuries in youths by the Japanese Society of Clinical Sports Medicine, shoulder and elbow pain still frequently occurs in young baseball players. We conducted a questionnaire survey among baseball players at elementary schools across the country to understand the practice conditions of players, examining the risk factors of shoulder and elbow pain in baseball players. Methods: The questionnaire survey was conducted among elementary school baseball players as members of the Baseball Federation of Japan in September 2015. Results: A total of 8354 players belonging to 412 teams (average age: 8.9) responded to the survey. Among 7894 players who did not have any shoulder and/or elbow pain in September 2014, elbow pain was experienced in 12.3% of them, shoulder pain in 8.0% and shoulder and/or elbow pain in 17.4% during the previous one year. A total of 2835 (39.9% of the total) practiced four days or more per week and 97.6% practiced 3 h or more per day on Saturdays and Sundays. The risk factors associated shoulder and elbow pain included a male sex, older age, pitchers and catchers, and players throwing more than 50 balls per day. Conclusions: It has been revealed that Japanese elementary school baseball players train too much. Coaches should pay attention to older players, male players, pitchers and catchers in order to prevent shoulder and elbow pain. Furthermore, elementary school baseball players should not be allowed to throw more than 50 balls per day. Study design: Retrospective cohort study