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1.Abstract: The system of the pyrotechnic oscillation burning ha ve been studied with the experimental research and the reaction mechanism analys is methods .The phenomenon of the oscillation burning has been observed and reco rded, and the relationship of the concentration of the reactant with the frequen cy of the oscillation has been obtained.
2.of product were examined in detail. The results showed that 99.2% of 12.1 g/L COBE was reduced to(S)-CHBE with an e.e.
3.Based on the non-stagger grid technique, the momentum equation is solved using Cartesian velocity components as solving variables. And the pressure-weighted interpolation method, proposed by Rhie and Chow, is conducted.
4.The BZ-like chemical oscillating reaction in the system of KBrO3/ (CH3O),CCH (NH2) COOH / CH3COCH3/ MnSO4/ H2SO4 in investigated. The typical oscillating wave and the concentration ranges of oscillation are shown. Effects of some factors on the oscillation and temperature effect are examined.
5.The initial COBE concentration was 22 g/L, Candida pseudotropicalis cell concentration was 100 g/L. The reaction was carried out in the buffer(pH 6.0, 180 rpm) for 8h at 30 °C, in which 10 g/L glucose as the co-substrate.
6.By primary research,the results in shaking flask culture showed that the fermentation broth was loaded in 250 mL Erlenmeyer flasks containing 50 mL of synthetic medium consisting of CMC-Na 0.5 %,peptone 1 %,bran 3 % and incubated at 28 ℃ for 48 h. Then the maximum yield of FPase was 111.5 U/mL.
7.Maximal isomaltotriohydrolase formation was obtained when the strain was aer-obically grown at 26℃ for 48 h in a medium containing 1. 5% dextran,1% fish peptone, 0. 1% yeast extract,0. 3% beef extract,2% methanol and trace amunts of inorganic salt, pH 8. 0. The enzyme had an optimal pH of 6. 5-7. 5 and an optimal temperature of 50-55℃.
8.If the organic substrate isunable to be brominated, it is necessary to add either a bromine agent(e.g., acetone),or a reduced agent(e.g., Fe(phen)~(2+)_3 ), or bubble the solution with an inert gas flow(usually a N_2 flow), or perform the oscillations in the continuous flow stirred tankreactor(CSTR) to remove excess Br_2 produced during the oscillation.
9.METHODS Ten strains of fungi were incubated with G Rb 1 and PDS at a certain temperature with shaking. A portion was taken out at different time and mixed up with butanol. The butanol extract was analysed by thin layer chromatography (TLC), high performance liquid chromatography (HPLC) and electrospray ionazition mass spectrometry (ESI MS).
10.In this paper,the adsorption effect of Zn~(2+) by three clay minerals,i. e.
