The large amount of heavy metal chromium emissions from industrial production, ore smelting and sewage treatment plants have made chromium one of the most widespread heavy metal pollutants, with Cr (VI) being the most toxic.In recent years, people have gradually recognized the great harm of heavy metal chromium SPORT PROTEIN VANILLA pollution, but
A nonautonomous discrete predator-prey system incorporating a prey refuge Accessories and Holling type II functional response is studied in this paper.A set of sufficient conditions which guarantee the persistence and global stability of the system are obtained, respectively.Our results show that if MINERAL refuge is large enough then predator spec
Abstract Background Motor cortex stimulation applied as a clinical treatment for neuropathic disorders for decades.With stimulation electrodes placed directly on the cortical surface, this neuromodulation method provides higher spatial resolution than other non-invasive therapies.Yet, the therapeutic effects reported were not in conformity with dif
With the depletion of natural resources and the deterioration of environment, natural fiber based biomaterials are attracting more and more attentions.Natural Bridal Party Dresses fibers are considered to be renewable, biodegradable, and ecofriendly, and have been applied to be used as alternative reinforcements to traditional glass fibers for poly