World Sled-dog Championship in Sweden 瑞典举办世界雪橇犬锦标赛
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
UK study suggests phone bans may not be effective 英国研究指出校园手机禁令 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
生物通3 天
热气流翱翔鸟类的自适应越野优化策略：形态、行为与生态的深度解析
经验和理论滑翔极曲线 ：研究人员利用高频 GPS 轨迹创建了 12 种鸟类的经验滑翔极曲线，这些曲线可能包含偶尔或频繁的扑翼飞行。研究发现，基于 Pennycuick 方程的理论滑翔极曲线与经验数据拟合不佳，即便更新参数后，仍未显著改善。而经验曲线能更好地拟合观测数据，且不同物种间差异较大。滑翔极曲线定义的 “最小下沉（minimum sink）” 和 “最佳滑翔（best glide）” ...