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Optimal Neutron Spectrum Database for In-reactor Pu Production.
Adv Sci (Weinh)
January 2025
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610200, China.
Plutonium-238 (Pu) is a scarce heat-source radioisotope used in nuclear batteries, which is produced by in-reactor irradiation of Americium-241 (Am) or Neptunium-237 (Np). Optimizing the neutron spectrum can improve the production efficiency of Pu, but currently, it is still a lack of knowledge about the optimal neutron spectrum for Pu production. Genetic algorithms and burnup algorithms are combined to identify optimal neutron spectra for Pu production under various irradiation times and flux levels, and build an optimal neutron spectrum database, which answers the questions "What is the optimal neutron spectrum for Pu production?" and "What is the maximum efficiency for Pu production" once and for all.
View Article and Find Full Text PDFBody composition and physical performance of mountain bike athletes.
Sci Rep
January 2025
Postgraduate Program in Food and Nutrition at the Federal University of Piauí (PPGAN/UFPI), Teresina, Piauí, Brazil.
Body composition is a determining factor in the physical performance of cyclists, directly influencing efficiency and power during competitions. Understanding these aspects can help optimize training and maximize results. This study aimed to analyze the influence of body composition on physical performance in mountain bike athletes.
View Article and Find Full Text PDF"Enhancing equitable impact: ethical, legal, and sustainable approaches in short-term surgical outreach for global child health".
Front Pediatr
January 2025
Department of Anesthesiology, University of Wisconsin Foundation, Madison, WI, United States.
Global health prioritizes improving health and achieving equity in health for all people worldwide. It encompasses a wide range of efforts, including disease prevention and treatment, health promotion, healthcare delivery, and addressing health disparities across borders. Short-term medical and surgical missions often contribute to the global health landscape, especially in low and lower-middle income countries.
View Article and Find Full Text PDFShort-time cycling performance in young elite cyclists: related to maximal aerobic power and not to maximal accumulated oxygen deficit.
Front Physiol
January 2025
Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Kongsberg, Norway.
Purpose: To explore the relationships between performance variables and physiological variables in a short-time (2-3 min) cycling time trial (TT) on a cycle ergometer.
Methods: Fifteen young elite cyclists (age: 17.3 ± 0.
The 9/3 Min Running Test: A Simple and Practical Approach to Estimate the Critical and Maximal Aerobic Power.
Eur J Sport Sci
February 2025
Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.
This study aims to determine the validity of the linear critical power (CP) and Peronnet models to estimate the power output associated with the second ventilatory threshold (VT2) and the maximal aerobic power (MAP) using two-time trials. Nineteen recreational runners (10 males and 9 females and maximum oxygen uptake: 53.0 ± 4.
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