Publications by authors named "Zi-qiang Chang"
Molecularly imprinted polymer nanospheres (MIP) were prepared with Congo red as the template, methacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as the cross linker, azodiisobutyronitrile (AIBN) as an initiator, and acetonitrile as the porogen by precipitation polymerization. The morphology of MIP was characterized by SEM and TEM which showed that the diameter of MIP was nanometer grade (90 nm) and the shape was homogeneous. The specific surface area and pore volumes of MIP and NIP were examined through Brunauer-Emett-Teller method of nitrogen adsorption experiments.
View Article and Find Full Text PDFCd(II) ion could form a stable complex with 8-hydroxyquinoline (molar rate = 1 : 1) in ethanol solution as revealed by ultraviolet spectrum analysis. Based on this molar rate of Cd(II) ions and 8-hydroxyquinoline, Cd(II) ions imprinting polymer microspheres were synthesized by water-in-oil-in-water (W/O/W) emulsions polymerization, using metal Cd(II) ions as template, 8-hydroxyquinoline as ligand, methacrylic acid as functional monomer, ethylene acrylic acid methyl ester as cross-linker, and azodiisobutyronitrile as initiator in aqueous phase. The influences of the dosage of emulsifier, porogen and outer aqueous phase on the morphology and adsorption property of MIP were studied.
View Article and Find Full Text PDFObjective: To investigate the expression of peroxisome proliferators-activated receptor gamma (PPARgamma) in trophoblast and relation between PPARgamma ligands and trophoblast invasion.
Methods: We examined the expression of PPARgamma by immunohistochemistry, immunocytochemistry and real time quantitative PCR. We next examined, using the cytotrophoblast culture model, the biological role of PPARgamma ligands in vitro.