1%) towards 1-octene and catalytic activity for ethylene tetramerization in the presence of Cr(Ⅲ) compounds (chromium chloride tetrahydrofuran or chromium acetyl acetonate) and methylaluminoxane.

The reaction mechanism of ethylene tetramerization for the preparation of 1-octene was analyzed.

Friction and wear properties of nano-TiO_2 filled polyurethane coatings with polyfluo-150 wax are investigated,and a comparison of tribological performance is made between nano-TiO_2 filled the polyurethane with polyfluo-wax coatings and micro-TiO_2 filled polyurethane coatings polyfluo-wax on MHK-500 friction and wear tester in sliding against stainless steel ring under dry friction condition.

Preparation of VAc-2EHA-NMA-AA quadripolymer emulsion;

Study on preparation of St-BA quadripolymer water-borne anti-corrosive coating emulsion and its properties;

Study on new synthesis of metaldehyde;

The yield of metaldehyde could reach 8%~15%.

Metaldehyde(Ⅰ)is obtained in relatively high yields(15%～20%) by polymerizing with acetaldehyde(Ⅱ) in the presence of compound hydrochloric acid catalyst and under temperature between -15?℃ and 15?℃.

Detection of the cytomegalovirus antigen-specific cytotoxic T lymphocytes in human peripheral blood mononuclear cells by using MHC class I tetramer technique;

Expression and refolding of a HLA-A*0203-BSP fusion protein and identification of its tetramers;

Preparation and identification of HLA-(A*1101)-GPI tetramer loading with human cytomegalovirus pp65 antigen peptide;

The PEO-grafted cationic polyacrylamide microparticles were synthesized via inverse microemulsion tetrapolymerization of acrylamide(AM), acryloyloxyethyl trimethylammonium chloride(ADAMQUAT), PEO-macromonomer(PEO-1000) and N,N′ -methylenebisacrylamide(Bis).