The interactions between carbonate and H2S saturated acid fluid at various temperatures and pressures in-situ conditions were simulated using hydrothermal diamond-anvil cell equipment combined with Raman spectroscopy. The heating process is from room temperature to 230?C and then the system is cooled to room temperature again. Experimental results clearly demonstrate that carbonate minerals present much precipitation from room temperature to 140?C and little precipitation from 140?C to 230?C. Carbonate trends to precipitate with the increase of temperature and pressure, and dolomite is more stable than calcite and limestone. But in the cooling process carbonate suffers from little dissolution. So in the burial process, carbonate trends to precipitate, and the rapid closed burial and slow uplift process is beneficial to form high quality reservoirs in the deep closed condition. Fault and magmatic hydrothermal activities may break the closed system, which needs further study.

The growth inhibition of cyanobacteria by bacterium (strain B₅) was studied. The results show that one strain of bacterium (strain B₅) with obviously algae-lytic can be separated from the eutrophic lake. It can effectively remove Anabaena by coagulation, cell lysis and biodegradation. The flocculation and further biodegradation of Algae cell was preformed through the direct contact of strain B₅ and its thermo-stability and algae growth inhibitive extracellular secretory compounds.

The structures of perovskites in the system CaTiO₃-SrTiO₃ were measured and refined at room temperature by X-ray powder diffraction. The sequence of phase transitions for Ca_1-xSr_xTiO₃(0≤x≤1), found with increasing Sr content, is orthorhombic Pbnm, orthorhombic Bmmb, tetragonal I4/mcm and cubic Pm3m. The boundaries of phase transitions are at x=0.45(5)for Pbnm-Bmmb, x=0.65(5) for Bmmb-I4/mcm and x=0.92(2) for Pm3m, respectively.

Existing evidences show that cop1 (Constitutive Photomorphogenic 1) is a key photomorphogenic repressor in Arabidopsis thaliana. The cDNA of cop1 gene in pea (Pisum sativum) was cloned from a pea cDNA library with Arabidopsis thaliana cop1 cDNA as a probe. Sequencing analysis revealed that its full length was 2863bp, including 604bp of 5' untranslated region, 243 bp of 3' untranslated region and 2016bp coding region for 672 amino acids. Pea cop1 gene was highly expressed in E.coli. Homology analysis of cop1 from Arbidopsis thaliana, pea and tomato revealed that cop1 might be an evolutionarily very conserved protein.