析取

When it is crashed to -3 mm and is mixed uniformly it will become the sample for multi-elements analysis raw ore screening and elutriation raw ore mineralogy research and gravity concentration test.

试验矿样取自选矿生产现场，经破碎至-3毫米，均匀混样后作为本次试验的多元素分析样品、原矿筛分及水析样品、原矿矿物学研究样品和重选试验样品。

Methods The cDNA coding sequencing of enterokinase light chain was amplified by RT-PCR from mouse dodecadactylon mucosa and cloned into pET32a expression plasmid. The recombinant enterokinase light chain was expressed in BL21(DE3) and purified with Ni-affinity chromatography.

采用RT-PCR从C57BL/6J小鼠的十二指肠肠系膜黏膜组织中钓取肠激酶轻链的cDNA，将其克隆入pET32a原核表达载体中，并在大肠杆菌BL21(DE3)中进行表达，然后以镍亲和层析法对表达产物进行纯化。

The preparation process of equisetum pratense total alkaloid includes the following steps: coarse pulverizing equisetum pratense to obtain rough powder, methyl alcohol percolation to obtain percolate, recovering methyl alcohol, concentrating, degreasing by means of petroleum ether, alkalifying concentrate, CHCl3 extracting, soda lye washing, neutral water washing, recovering CHCl3 to obtain rough alkaloid, adsorption by using silica gel column, eluting, recovering solvent so as to obtain refined EPR.

该发明是通过两个步骤来实现的：第一步，提取草问荆总碱，流程：草问荆粗粉――渗漉液――浓缩液(析胶、石油醚脱脂、氨水碱化)――碱化浓缩液(CHCl3萃取)――CHCl3层――CHCl3液(回收CHCl3)――粗生物碱――吸附硅胶柱――精致EPR。第二步，选择实验试剂、仪器、用小鼠作为实验对象，进行中枢神经系统实验，研究作用及作用机制。

Nepetalactone, the primary component of catnip oil, were extracted by the using method of simultaneous distillation-extraction and separated by using silica gel chromatography column. To compare the repellency of nepetalactone and DEET on mosquitoes, topical bioassay method on the skin and a cage olfactometer were employed to assess the effective protection time and the spatial repellency.

采用同时蒸馏萃取及硅胶柱层析法从猫薄荷Nepeta cataria植物中提取、分离制得驱蚊有效成分假荆芥内酯，并采用个体涂肤有效保护时间测定法及风洞空间驱避效果测试法，对假荆芥内酯与避蚊胺的驱蚊效果进行了对比试验。

The paper to analyzes because experiments "factor contribution rate".to conduct the research;Discovered "the pure factor from difference square" for the negative value is the statistic stochastic value result;When the factor function is not extremely remarkable,the factor contribution rate also is a negative value;By now should merge not the remarkable factor square the random error square,recomputation ANOVA as well as factor technical progress factor.

论文对析因试验中用于分析因子作用的"因子贡献率"进行研究；发现"纯因子离差平方和"为负值其实是统计量随机取值的必然结果；尤其当因子作用极不显著时，计算的因子贡献率常常也是负值；这时应该将不显著的因子平方和并入随机误差平方和，重新进行ANOVA以及计算因子贡献率。

Solani. The extract was further separated into two parts and one part separated by ethyl acetate while the other was separated by petroleum ether. Based on the inhibition experiment against R. solani, ethly acetate extract has a rather strong effect on R. solani with 89.70% inhibition rate and 15.52 mgmL^(-1) EC 50.The effect of petroleum ether extract on R. solani is relatively weak. The former was again divided into five parts in silica gel column, of which the second part significantly inhibits R. solani. During the periods of 24 and 48 hrs, the inhibition rate of the second part on R. solan is respectively 89.58% and 80.36%.

结果表明：鸭粪乙醇提取物对水稻纹枯病菌有抑制作用，24h内最高菌丝生长抑制率和EC50分别为88.64%、26.11mgmL^(-1)；鸭粪乙醇提取物经萃取分离得到石油醚和乙酸乙酯两种组分，其中石油醚组分抑菌效果较弱，乙酸乙酯组分抑菌能力较强，其对水稻纹枯病菌抑制率为89.70%，EC50为15.52mgmL^(-1)；对乙酸乙酯组分进行硅胶柱层析分离得到5种流份，其中第2流份有显著抑菌活性，在24h和48h内对水稻纹枯病菌的抑制率分别为89.58%和80.36%。

Methods Fresh litchi peel was air-dried, extracted with 70% ethanol solvent in ultrasonic wave. The extract was then purified with D101 macroporous resin adsorption chromatography, C18 solid phase extraction and high performance liquid chromatography. And the component purified was identified by mass spectrography.

新鲜荔枝果皮阴干，用70％乙醇溶液以超声波浸提法提取，提取液经过D101大孔树脂吸附层析、C18小柱固相萃取、高效液相色谱法分离、纯化后，采用质谱法鉴定结构。

The activity characterized above has been performed with positive control using NGF from mouse submaxillary glands purchased from Sigma.

取活性组分Ⅴ，再用Sephadex G 50排阻柱层析，将样品分成3个峰，NGF主要存在于第Ⅱ峰中，最后NGF得率为蛇毒的0.43%。

Glass batches of compositions in the tridymite,lithium metasilicate, lithium disilicate and spodumene primary phase regions of Li_2O—Al_2O_3—SiO_2 system were melted and crystallised.

取自鳞石英、偏硅酸锂、二硅酸锂和锂辉石4个相区的玻璃成分，经过熔制、析晶，并用X-射线衍射方法鉴定了析出的晶相。

Blood samples from vein and artery end of the filter, plasma-based dialysate from entry and exit of the filter and ultrafiltrate were taken at 5 min（T0）, 2 h (T1), 4 h (T2) and 6 h (T3) during HD-PBD and 5 min（t0）, 6 h (t1), 12 h (t2) and 24 h (t3) during HVHF. Bilirubin levels of dialysate, ultrafiltrate and plasma were measured and quantity of serum bilirubin removed by extracorpomal circulation was calculated.

分别在HD-PBD治疗5 min（T0）、2 h(T1)、4 h(T2)和6 h(T3)及HVHF治疗5 min（t0）、6 h(t1)、12 h(t2)和24 h(t3)取滤器动脉端和静脉端血液，流入端和流出端透析液及滤出液，测定各时间点标本胆红素水平，并用公式计算其体外清除量。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。