Abstract Many pollinators, including bumble bees, are in decline.Such declines are known to be driven by Shovels a number of interacting factors.Decreases in bee populations may also negatively impact the key ecosystem service, pollination, that they provide.Pesticides and parasites are often cited as two of the drivers of bee declines, particularl
Abstract In order to improve the prediction accuracy and robustness of the machine tool thermal error model, a method to Jock select temperature sensitive points of the machine tool thermal error model based on independent variable selection criteria is proposed.Firstly, the positioning error of the machine tool is divided into geometric positionin
Bentonite-based materials have been considered in many countries as engineered barrier/backfilling materials in deep geological disposal of high-level radioactive waste.During the long period of waste storage, these materials will play an essential role in ensuring the integrity of the storage system that consists of the waste canisters, the engine
The circular economy is a new economic model which provides the necessary goods and services for maintaining and improving living standards without increasing the consumption 155 TITANIUM of raw materials and waste.The traditional model of the linear economy is viewed as an unsustainable long-term solution because it does not take waste treatment i