Data query in DataWindow is that field information of data table needed search is inputted into general data query window in shape of DataWindow. In general data query window, DataWindow receives query condition inputted by users, and checks if query condition is integrity. Conditions inputted by users were transformed into legal condition filter sentences that can be identified by DataWindow through program processing.
The optinum reaction conditions are as follows: n(rosin)∶n(fumanic)∶n(pentaerythritol)=50∶11∶6, catalyst dosage, 0.15% of the rosin addition reaction temperature, 160±5(°C); addition reaction time, 3h;
This confirmed again reversible changes of the helices. Crystal screen kits (Crystal Screen I and II, Hampton Research, Riverside, CA, USA) were used to optimize the growing conditions of 2-Helix protein. High quality crystals were eventually obtained at the optimized regime of 15% PEG 8000 and 1.0 MLi2SO4 buffer, and used for diffusion analysis.
用晶体生长条件筛选试剂盒(Crystal Screen Ⅰ and Ⅱ，Hampton Research，Riverside，CA，USA)对2-Helix蛋白晶体的生长条件进行初选，经过优化最后在15％PEG 8000、1.0 M Li_2SO_4缓冲液长出可以进行衍射的晶体。
The fermentation conditions of BtHB was studied and the results indicated that its apt cultural time, temperature, ph, rotation rate is 36h, 30℃, pH7.5,1 80r/mim, respectively.
The principal factors affecting the epoxy group contentwere found out and the best conditions were as the following: the weight ratio ofcellulose, epoxy chloropropane and 30%NaOH(g/mL/mL) was1:6:8, The reactiontemperature was 40℃. The reaction time was 2.5h.
Therein A Let Z be a Banach space, / 6 C(X. R) , satisfying the P. S. condition, Cbe the unique critical value of / in [c, b] C R suppose that all the comsected component of K, are isolated points.
The most favourable solid seed-medium and cultural conditions were screenedout through orthogonal experiments.Under such suitable conditions the numberof spores produced was increased 7.5 times more than those on Gause's No.1synthetic medium while the culture time needed only 4 days,i.e.beingshortened by at least 7～10 days.The curve of the spore number produced at different times showed that therewere several generations of spores produced on the same agar-slants;each gene-ration's spores possessed different...
The most favourable solid seed-medium and cultural conditions were screenedout through orthogonal experiments.Under such suitable conditions the numberof spores produced was increased 7.5 times more than those on Gause's No.1synthetic medium while the culture time needed only 4 days,i.e.beingshortened by at least 7～10 days.The curve of the spore number produced at different times showed that therewere several generations of spores produced on the same agar-slants;each gene-ration's spores possessed different characteristics in antibiotical production.The fermentation flasks inoculated with the first or the second generationalspores would produce more nanchangmycin A or more effective insecticidalantibiotics(the fraction B)respectively.
本研究进行了南昌链霉菌孢子培养基和培养条件的筛选。筛选到的培养基和培养条件,使南昌链霉菌每支斜面孢子达5亿多,是高氏培养基产孢量的7.5倍,培养时间缩短了7～10天。同时初步探讨了南昌链霉菌在固体培养基上孢子的消长变化及对摇瓶发酵产素的影响,发现该菌在固体培养基上能周期性地产生多代孢子;摇瓶发酵,接种第一代孢子南昌霉素 A 产量最多,接种第二代孢子则高效杀虫组分 B 的效价最高。
The adsorption and desorption extraction processes of Midecamycin in the fermentation broth with macroreticular adsorbents in the production process were discussed.The material and experimental conditions such as, adsorbents, eluants and other relevant factors were selected and determined in the laboratory.Results showed that, (l)the static capacity of Midecamycin onto the MD-A adsorbent is as high as 6.7 × 10~4u/g of resin, from fermentation broth with a concentration of 1,500 u/ml,and is 40% higher than that...
The adsorption and desorption extraction processes of Midecamycin in the fermentation broth with macroreticular adsorbents in the production process were discussed.The material and experimental conditions such as, adsorbents, eluants and other relevant factors were selected and determined in the laboratory.Results showed that, (l)the static capacity of Midecamycin onto the MD-A adsorbent is as high as 6.7 × 10~4u/g of resin, from fermentation broth with a concentration of 1,500 u/ml,and is 40% higher than that of CAD-40 adsorbent reported ia the literature) (2) the dynamic capacity of Midecamycin onto the ME)-A adsorbent is 1.32×10~5 u/g of resin; (3) a kind of ketone was used as eluant with elution rate of 93%.
Antioxidative conditions in the process of extracting tea polyphenols have been studied. The experimental results proved that the percentage of tea polyphenols oxidized could be apparently controlled by adding inorganic antioxidant in the neutral solutions. The antioxidative activity increased in the following order: KI
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