The mine hoist sheave bearing is a large heavy-duty bearing, located in a derrick of tens of meters.Aiming at Stocking the difficulty of sheave bearing fault diagnosis, a combined fault-diagnosis method based on the improved complete ensemble EMD (ICEEMDAN) energy entropy and support vector machine (SVM) optimized by artificial fish swarm algorithm
When exposed to a thermal gradient, reaction networks can convert thermal energy into the chemical selection of states that would be unfavourable at equilibrium.The kinetics of reaction paths, and thus how fast they dissipate available energy, might be dominant in dictating the stationary populations of all chemical states out of equilibrium.This p
Although inherently fertile, tropical soils rapidly degrade soon after cultivation.The period of time for which crops, mulch, compost, and manure provide nutrients and maintain mineral fertilizers in the soil is relatively short.Biochar, on the other hand, has the potential to maintain soil fertility and Anti-Blemish sequester carbon for hundreds o