Under the influence of underground water with high concentration of sulfate, several vertical shafts in the Huang-Huai region are seriously corroded but have varying degradation degrees in different parts.Taking the auxiliary shaft of Lin-Huan coal mine g5210t-p90 as the research subject, the mechanism of this phenomenon was studied.Then, wet-dry a
An easy, fast, inexpensive, and simple method utilizing a microshaper with a very small knife nose is used to fabricate microconvex aspherical lenses.The microshaper is mounted on a computer numerical control (CNC) machine.To achieve an accurately designed profile of the lens surface, a cutter-path planning algorithm with compensation for knife int
Alkaline zinc-iron flow battery (AZIFB) is promising for stationary energy storage to achieve the extensive application beer button down shirts for men of renewable energies due to its features of high safety, high power density and low cost.However, the major bottlenecks such as the occurrence of short circuit, water migration and low efficiency h
Rapid growth in outdoor recreation may have important and varied effects on terrestrial mammal communities.Few studies have investigated factors influencing variation in observed responses of multiple mammal species to recreation.We used data from 155 camera traps, in western Alberta (copyright), and a hierarchical Bayesian community modelling fram