A novel kind of denture base nanocomposite was prepared by polymethyl methyacrylate(PMMA) and cethyltrimethylammonium bromide modified organic montmorillonite (
Al12Si3.75Ge0.25O26 ceramic powder was prepared by sol-gel method using Al(NO3)3,Si(OC2H5)4 and Cl3GeCH2-CH2COOH as precursors.The structural formation of Al12S
The dynamic mechanical behavior of a new kind of flexible epoxy FE-1,which was crosslinked under four different thermal crosslink conditions,was studied.Dynamic
An electrodeposition method and its experimental device for rehabilitation of cracks in reinforced concrete were proposed.Porous concrete is proposed to simulat
A native mesophilic iron-oxidizing bacterium,Acidithiobacillus ferrooxidans,has been isolated (30 ℃) from a typical,lead-zinc concentrate of Dachang Mine in th
The cross-sectional images of nine groups of ore samples were obtained by X-ray computed tomography(CT) scanner.Based on CT image analysis,the fractal dimension
The guano of penguins, other seabirds, and pinnipeds is an important source of phosphorus in the ecosystems of Antarctica. To study the vertical distribution of phosphorus in sediments influenced by p
Soil enzyme activities can be used as indicators of microbial activity and soil fertility. In this paper, the activities of invertase(IA), phosphatase(PA) and urease(UA) were investigated in tundra so
Juncus bufonius L. (Juncaceae) is recognized by the US Department of Agriculture as a weed or invasive plant. Recently, we reported on J. bufonius L. var. bufon