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Methods: from prepation of crude drug as start, study the technology of extract and defat with L9 (3~4) orthogonal test. With EtOH extraction and water sed, alkali washing, EtOAC extraction as main methods of eliminate dopant. Finally with alky AlzO3 chromatographic column, rich and gain anticancer active site. The maximum response was achieved at a 40 min extracting time with 10 times volume 90% EtOH added to the sample for the first time and 30 min for the second time. Adding 10 times water will produce precipitation; Place the precipitation into 6 times petroleum benzin to de-fat at 60℃.

云南红豆杉中抗癌活性物制备工艺研究方法:利用正交设计试验L9(3~4)确定原料药提取工艺为:10倍量90%乙醇提取两次,第一次40分钟,第二次30分钟;醇提液用10倍量水沉;沉淀加6倍量石油醚40℃脱脂;用1mol/L的NaOH溶液碱洗,除去酸性杂质;以碱性氧化铝柱,以环己烷/丙酮为洗脱溶剂,在环己烷-丙酮(6:4)段富集到所需活性部位,洗脱剂用量为3VB。

The results show that the optimal hydrolysis conditions of these three enzymes were:50℃,pH 8.5, substrate concentration 1:3,enzyme dosage 1200U/g,time 4h for Alcalase; 45℃,pH 8.1, substrate concentration 1:3, enzyme dosage 1200U/g, time 4h for Trypsin;50℃, pH5.5, substrate concentration 1:3, enzyme dosage 1400U/g, time 6h for Bromelin, respectively. The compound enzymes hydrolysis was investigated on the basis of the single enzyme hydrolysis.

利用单因素试验和正交试验分别对这三种酶单独水解牡蛎的条件进行了研究,得出三种酶水解牡蛎的最佳条件分别为Alcalase:温度50℃,pH8.5,料水比1:3,加酶量1200U/g,时间4h;胰蛋白酶:温度45℃,pH8.1,料水比1:3,加酶量1200U/g,时间4h;菠萝蛋白酶:温度50℃,pH5.5,料水比1:3,加酶量1400U/g,时间6h;为牡蛎生物活性肽的开发提供了基础参考数据。

We have studied a model of a non-Newtonian viscous compressible fluid in 3D bounded domains, in which the viscous part of the stress tensor satisfies the coerciveness condition and the values of the growth condition ., are positive constants. Here is the tensor of the velocity gradient, is the strain tensor and ,which depends on the tensor of the velocity gradient, is the hefts of .

对满足强制性条件,以及增长性条件的非牛顿粘性可压缩流体在三维有界区域中的流动进行了研究,其中和为正常数,为速度梯度张量,是偏应力张量,为的分量,它依赖于速度梯度张量。

Reduce Bloom by cross multiplication of reverses of fortune, from which these supports protected him, and by elimination of all positive values to a negligible negative irrational unreal quantity.

590把布卢姆凭借这些证券所避免受到的厄运相乘,并除去一切正数值,将他换算成可忽略的量、负量、无理性的量和虚量。

The results showed that the grain yield of winter wheat with two-irrigation was higher than that with one-irrigation with the same nitrogen application rate and method. Compared to one-irrigation,the grain number per spike in two-irrigation was higher,the 1000-grain weight was lower, the water wastage was higher, but the WUE was lower. The yield was not affected significantly by nitrogen rates and the methods. Within the nitrogen rate of 157.5-295.5kg/hm2, the lower NUPE and Nitrogen Productivity declined with nitrogen rate increasing. NHI was not lower than the others at the lowest nitrogen rate of 157.5kg/hm2. The accumulation of NO3--N in soil was significantly and positively correlated with the nitrogen application rate. NO3--N in one-irrigation was distributed mainly in the top layer (0-80cm), but it was inverse in two-irrigation.

结果表明,施氮量和施氮方式相同时春浇二水冬小麦的产量高于春浇一水,二水穗粒数较一水高,千粒重则低于一水,一水耗水量较少,水分利用效率明显高于二水;同一水分下不同施肥量及施肥方式对产量的影响差异不显著,同一施肥方式下在157.5-295.5kg/hm2范围内,施肥量越大,氮素生理效率和氮肥生产力越低,施氮157.5kg/hm2时,氮收获指数均处在最高或较高水平;土壤硝态氮残留量与施氮量呈显著正相关,成熟期一水条件下土壤中硝态氮主要集中在上层(0~80cm),二水条件下则主要分布在中下层。

This paper presents an evaluation method based on psychological scale. Rank-order method or method of paired comparison is adopted to sort the images retrieved by different algorithms, then an ordinal scale is obtained. With presupposition of normal distribution, an equal interval scale is also obtained though POZ conversion. Thus different algorithms can be compared on these scales.

本文提出基于心理量表的情感图像检索性能评价方法,采用等级排列法或对偶比较法对不同算法检索出的图像进行排序,建立顺序量表,并在样本满足正态分布假设的前提下,将顺序量表转化成等距量表,以比较检索算法的优劣。

The paper obtains some conclusions after many theories analysis and empirical tests: Firstly, Volume-price relativity is extensive: total volume or it's change, disassembled volume promoting price movement or it's change all has plus relativity to equilibria price. Secondly, there is unilateralisms Granger casuality in bullmarket, while there is bidirectional Granger casuality in bearmarket. There is not nonlinear Granger casuality in both markets. Third, Behavior finance has remarkable effects after contrasting to different investment conditions. Moreover, causality research by moving tendency can reflect the stable relation while usual causality research can't do. Fourth, it can be ture forecasing key period of tendency reversion by building volume-price elasticity coefficient containing composite information of volume-price and analysis methods of moving tendency.

本文大量的理论分析和实证研究得到以下结果:第一,量价之间的相关性具有广泛性,总成交量及变化、分解的促进股价变化的成交量及变化都与均衡价格收益有正相关关系;第二,在牛市中,收益和成交量之间存在单向的Granger因果关系,而在熊市中,收益和成交量之间存在双向的Granger因果关系,不论熊市和牛市,上证和深证量价间均没有非线性因果关系;第三,不同市场环境的比较中还发现行为金融在股市中的作用明显,通过比较发现依据运行趋势的因果关系分析能反映量价间的稳定关系,而常规因果分析方法却反映不出来;第四,通过建立包含量价信息的量价弹性系数指标和依据运行趋势的关键区域研究法,可以实现对趋势转变关键区域的预测。

Methods 60 confirmedly diagnosed inpatients with COPD were subjected to standard treatments for 10~14 d or longer.

采用激惹抑郁和焦虑情绪量表、正性负性情绪量表、自尊量表、安全感量表等对60例急性加重期COPD患者入院时及出院时情绪状态和心理状况进行调查。

Research results of C atomicity in paraffin hydrocarbons show the linear paraffin hydrocarbons (from Tetradecane to Heptadecane) are almost burned up at lower loads, and some components of the SOF are not directly from fuel, but from lubricant oil or middle polymerization products of fuel.

SOF烷烃碳原子数分布的研究表明,低负荷工况下,燃油中易燃的正十四烷~正十七烷的绝大部分被烧掉,SOF中有些成分不是直接来自燃油,而是来自润滑油或燃油聚合反应的中间产物:高负荷工况下,供油量较多导致一部分正十四烷~正十七烷来不及燃烧就排出机外,SOF中还有些成分则是燃油高温裂解的产物。

Furthermore, the relationship between the residual norm of the semi-refined approximate eigenpair and that of the approximate refined eigenpair is discussed. The semi-refined biorthogonalization Lanczos algorithm is given. We carry on some numerical experiments, and the results show that the new algorithm is more efficient than its conventional counterpart.

根据精化投影方法的思想,提出了半精化双正交Lanczos方法,建立了半精化特征对和精化特征对对应的残量范数之间的关系,给出了半精化双正交Lanczos算法,数值实验表明,该算法比双正交Lanczos算法和拟精化双正交Lanczos算法优越。

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推荐网络例句

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。

Store this product in a sealed, lightproof, dry and cool place.

密封,遮光,置阴凉干燥处。