Abstract According to sexual selection theory, the sexes are faced with opposing evolutionary goals.Male fitness benefits from access to females, whereas female fitness is constrained by food resources and safety for themselves and their offspring.Particularly in large solitary carnivores, such as polar bears (Ursus maritimus), these divergent goal
In order to study the variation law of the maximum explosion pressure and the maximum pressure rise rate of the premixed gas in the flameproof enclosure, three different flameproof enclosures were selected as the test samples, and the explosion was carried out by filling the premixed typical combustible gas in the flameproof enclosure.In the experi
The Comet Gold Mine in the Murchison mineral field lies within Alkaline the Yilgarn Craton of Western Australia.Gold mineralization in this area is associated with a series of north-northeasterly trending structures, and has a long exploration history with some previous geophysical information.Other exploration information, such as geology and dril
The presynaptic compartment of the chemical synapse is a small, yet extremely complex structure.Considering its size, most methods of optical microscopy are not able to resolve its nanoarchitecture and dynamics.Thus, its ultrastructure could only be studied by Swim Top electron microscopy.In the last decade, new methods of optical superresolution m