The Carbon and Water Flux and Carbon Storages of Snail Control and Schistosomiasis Prevention Forest Ecosysteme in the Middle and Lower Reaches of Yangtz River;

DMAc was selected as solvent and Polyvinylpyrrolidone (PVP K90) was selected as pore forming additive, the influence of Polyvinylpyrrolidone concentration on the shrinkage ratio, the pure water flux, the retention to BSA and the membrane structure of Poly(vinylidene fluoride)/polyethersulfone Blend Membranes were investigated.

The nitrogen and water fluxes of the asymmetry membrane are 24.

In addition with blending PVC,the composite membrane forming speed and microporous structure,pure water flux and retention experiment of egg albumin solution of PU/PVC/SiO2 membrane were improved significantly.

The pure water flux, elimination ratio of urea and creatinine of PES membranes formed are tested.

30μm) pore surface,the flux of the modified membrane increased significantly.

Based on summarization of the basic laws and main affecting factors of net CO_2 exchange and water vapor flux in wetland ecosystem,relationship between the two is an.

And the NCEP/NCAR monthly reanalyzed data are employed to analyse the evolution character of water vapor flux and it s divergence flux, 500hPa height and u, v wind field.

With the development of convective activity,the water vapor flux and water vapor convergence develop toward high-level and the wet layer obviously thickens.

After the regeneration treatments for the microporous filter membrane by using warm water,acid,base and surfactant,its pure water flux and bubble point pressure were measured.