Rising atmospheric CO2 concentrations may alter the nitrogen (N) content of ecosystems by changing N inputs and N losses, but responses vary in field read more experiments, possibly because multiple mechanisms are at play.We measured N fixation and N losses in a subtropical oak woodland exposed to 11 years of elevated atmospheric CO2 concentrations
Abstract Gurami is a fish with a slow growth because of the efficiency of utilization of nutrients and apunisw2 energy contained in the feed is too slow, so it is not enough energy available for growth.Feed components that contribute to the provision of materials and energy for growth are proteins, carbohydrates, and fats.The ability of fish to use
This is a unique moment in human history.It is a unique opportunity to generate the momentum needed for rapid transformation of national and global policies and institutions.We are confronted by challenges of a magnitude and urgency greater than ever before at precisely the moment when humanity faces a global leadership vacuum.These complex, multid
Aiming at the problems of low stability of path planning, inability to avoid dynamic obstacles, and long path planning for multi unmanned aerial vehicles (UAV) in mountainous environment, a path planning method for UAV was proposed based on the fusion of Sparrow Search Algorithm (SSA) and Bioinspired Neural Network (BINN).The method first scans the