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The dissipation rate constants of malathion and methyl parathion with a concentration of 3mg/L and ethion, dicofol and cyhalothrin with a concentration of 0.5mg/L in 2000ml of 55-60g canna planted water sulution were respectively increased by 77. 66%, 117. 44%, 64. 80%, 38. 11% and 15. 35% compared to those in unplanted water solutions.
与不种植植物的对照相比,50-60g美人蕉对2000ml分别含有3mg/L的马拉硫磷、甲基对硫磷及0.5mg/L乙硫磷、三氯杀螨醇和三氟氯氰菊酯培养液中的马拉硫磷、甲基对硫磷、乙硫磷、三氯杀螨醇和三氟氯氰菊酯的消解速率依次分别提高了77.66%、117.44%、64.80%、38.11%和15.35%。
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The type, initial feeding time and concentration of precursor for HV unit formation had great effects on PHBV production in shake flasks. Propionate was selected as the better precursor for HV fraction than valerate after comprehensive survey of these two precursors. The suitable PHBV shaking-flask culture conditions were obtained through the analysis of PHBV fermentation process, the investigation of several factors by using RSA method and the fed-batch experiments. Cell dry weight, PHBV content, PHBV concentration, HV fraction and yield coefficient of HV unit to propionate were 27. 7g/L, 80.7%, 22. 4g/L, 16. 1mol% and 0.50g/g, respectively.
在共聚物PHBV的摇瓶发酵过程中,PHBV中HV组分形成的前体物质的种类、初始加入时间以及加入量是影响PHBV发酵过程的重要因素;在综合比较丙酸和戊酸这两种前体的基础上,选择丙酸作为HV组分合成前体较适宜;通过对PHBV发酵过程曲线分析、影响PHBV发酵指标的各因素的响应面分析以及摇瓶发酵补料试验,得到了较适宜的PHBV摇瓶发酵补料条件,在此条件下,细胞干重、PHBV含量、PHBV浓度、HV组分含量和HV组分对丙酸的产率系数可分别达到27.7g/L、80.7%、22.4g/L、16.1mo1%和
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After treated the spinal cord slice at E18 ~ P0 with ChABC at a final concentration of 0.1 U/ml, CGRP-LI fibers in the superficial layers of DH and their branches were seen to extend ventrally instead. When the concentration of ChABC increased to 0.5 U/ml, the above changes were more obvious.
2用0.1 U/ml终浓度的ChABC处理E18 ~ P0的小鼠脊髓片后,原本由DH浅层外侧部向腹内侧延伸的CGRP-LI轴突转为向腹外侧延伸,由DH浅层内侧部向腹外侧延伸的轴突同原本向背侧延伸的分支一起变为向腹侧生长。
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The experimental results of stepwise ethanol precipitation showed that the yeild represents the increasing trend with increase of the ethanol concentration, their polysaccharides contents have significant changes, and at the ethanol concentration of 30% and 70%, polysaccharides contents are up to maximum. Molecular weights of endopolysaccharides and exopolysaccharides are pockety.
分级醇沉实验表明,各醇沉浓度对应的得率都随醇浓度的升高而呈增加趋势,多糖含量变化起伏较大,醇浓度为30%和70%时所得多糖含量较高,虫草胞内和胞外多糖分子量分布都很不均匀;分步醇沉测定了各部分多糖所占的比例。
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HP3 identified as Zoogloea sp. is an effectively strain. Under the optimal degradation condition and ABAS concentration of 200~1200mg/L, the ABAS degradation followed negative exponential model. With the ABAS concentration increasing, the ABAS degradation was greatly regressed. Temperature was the most important factor influencing ABAS degradation. The functions of specific growth rate and temperature, degradation rate of ABAS and temperature were constructed respectively.
菌株HP3是一高效降解溴胺酸的菌株,经鉴定为动胶菌属;在最佳降解条件下,溴胺酸浓度在200~1200mg/L时,其降解遵从负指数方程,溴胺酸浓度大于1200mg/L时,降解受到显著的抑制;温度是影响菌体生长及降解溴胺酸的最显著因素,建立了菌体比生长速率-温度和溴胺酸降解率-温度曲线方程。
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The optimum initial substrate concentration for cultivation of inoculum was 8%.The optimum conditions for batch fermentation were 0.04vvm of air flow,5.8 of pH value.The fed-batch fermentation showed that the productivity of Klebsiella pneumoniae CICC 10011 was better than K.pneumoniae CGMCC 1206.The maximum concentration of 2,3-butanediol and acetoin was 103.38 g/L (90.98 g/L of 2,3-butanediol),and the yield reached 82.2%of its theoretical value.The fermentation conditions for K.pneumoniae.
确定种子培养的最适初始底物浓度为8%;间歇发酵的条件为:微氧发酵,通气量为0.04vvm,pH值为5.8;通过批式流加发酵实验表明:Klebsiella pneumoniae CICC 10011的代谢产2,3-丁二醇能力要远高于K.pneumoniaeCGMCC 1206,2,3-丁二醇最高浓度达90.98g/L,2,3-丁二醇与乙偶姻浓度之和最高达103.38g/L,转化率为理论最大值的82.2%,其发酵工艺还有待于进一步优化。
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The maximum quantum yield, zooxanthellae density, chlorophyll a concentration and protein concentration of non-bleached and bleached colonies of the reef coral Acropora intermedia were measured in inlet of The Third Nuclear Power Plant of Nanwan Bay in southern Taiwan.
本研究监测比较台湾南部南湾核三厂入水口海域,数量丰富但曾发生白化之中间轴孔珊瑚未白化与白化群体的最高光效率(maximum quantum yield, Fv/Fm)、叶绿素a含量、共生藻密度与蛋白质含量。
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The inhibition ratio increased greatly as the concentration of water extaction of Agrimonia is raised. When the drug concentration is 100μgmL〓, the inhibition ratio of BGC-803 and Hela are 61. 9% and 67. 9%, respectively.
在一定范围内,仙鹤草水提液随着浓度的增加,对肿瘤细胞的抑制率迅速增加,在药物浓度为100ug/ml时,对胃癌BGC-803和宫颈癌Hela细胞的抑制率分别为61.9%、67.9%。
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The same result can also be achieved when optimizing F8 function (Rastrigin's function). Comparing to EGA, KEGA is easy to realize and the increase of computation load can be neglected, but the performance of KEGA can be improved greatly. 2. To enhance the speed of AIA, two new methods of computing the concentration of antibody were developed. Simulation results for F8 and F15 (needle in haystack: type I) functions show that the two methods can improve the running speed of AIA more than 8. 5 times. 3. As to the drawback in defining antibody concentration, a new definition based on Euclidean distance between two antibodies and fitness is proposed. On this basis, a new AIA was constructed. The convergence performance are more better than that of AIA. 4. Combining king crossover with AAIA and DBAIA, two new AIAs, KAAIA and DKBAIA, were proposed.
仿真实验结果表明KEGA实现简单,与EGA相比,其增加的计算开销可以忽略,但性能改善十分明显; 2、针对基于信息熵的免疫算法运行速度慢的缺点,提出了二种能够加快AIA运行速度的新的抗体浓度计算方法,得到两种新的免疫算法,即加速的人工免疫算法(Accelerated Artificial Immune Algorithm,AAIA)和加速的人工免疫算法-2(Accelerated Artificial Immune Algorithm-2,AAIA-2),对测试函数F15(needle in haystack:type I)、F8函数的仿真研究表明,这两种算法的运行速度都是AIA的8.5倍以上; 3、针对AIA的浓度定义存在的缺陷,提出了一种新的基于抗体间欧氏距离和适应度的新的抗体浓度定义,并依据该定义构造了一种基于欧氏距离的人工免疫算法(Euclidean Distance-based Artificial Immune Algorithm,DBAIA)。
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The particle size of the dispersed gel synthesized under lower HPAM concentration increases with the concentration of HPAM or AlCA, but does not change evidently on addition of NaCl, Which shows the good salt tolerance property of dispersed gel.
在较高HPAM浓度下形成的连续网状凝胶,只有在/为最佳配比条件下才能获得最大的强度;在较低HPAM浓度下形成的分散凝胶,其粒径随HPAM或AlCA浓度增加而增大。
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。