分离

The separation of azeotropic mixtures is a common task in the chemical industry.

共沸混合物的分离是化学工业中常见的作业，因其共沸点的存在造成在分离上比一般混合物更加困难。

The pressure swing distillation is an effective separation of binary azeotropic mixtures, and it has the advantages of simplicity, low energy and low cost.

而变压蒸馏分离系统(Pressure Swing Distillation，PSD)是一种可以有效的分离二元共沸混合物的技术，且具有简易性、低耗能及低成本花费等优点[1]。

Pervaporation is one of the most active areas in membrane research. It has particular advantages in separating liquid mixtures, especially removal of trace material as well as azeotropic mixture.

渗透汽化是膜科学研究中最活跃的领域之一，在分离液体混合物，尤其是痕量、微量物质的移除，近、共沸物质的分离等方面有独特优势。

In a traditional total quantity distillation setup or a half micro-distillation setup, the separation and absorption of ammonia and constant volume must be done separately, so the analyzing program is complex and needs long analysis time. By the rapid azotometer (Type: NC2), the ammonia in the waste water could be analyzed through one step which includes separation, absorption and titration. Compared with the tradition analysis methods, the ammonia-N in waste water can be analyzed more quickly.

含氨废水通过NC2定氮装置将氨分离，吸收，滴定集为一体，克服了传统全量蒸馏装置或半微量蒸馏装置将废水中的氨分离，吸收，定容分步进行的复杂，耗时缺点，从而达到快速测定废水中氨氮含量的目的。

Fermentative strains of Bacteroides from granule cultured with soybean wastewater and of G〓 streptococcus from granule cultured with glucose are isolated.

从豆制品废水培养的颗粒污泥中分离出了一株属于拟杆菌属的发酵性细菌，从葡萄糖配水培养的颗粒污泥中分离出了一株属于革兰氏阳性链球菌的发酵性细菌。

Methods The essential oil Ⅰ and Ⅱ were extracted from the root of Cibotium barometz with CO 2 supercritical fluids by two grades isolation and analysed by GC-MS.

采用超临界CO2 流体萃取技术提取其精油部分，经二级解析分离出精油Ⅰ和Ⅱ。并用GC -MS -联用技术进行分离和鉴定。

The ionomer membrane under the conditions of 20℃ and 0.05 MPa shows better permeaselectivities that the permeability coefficient of CO_2 and CO_2/ N_2 separation factor are 223 Barrer and 65.70, respectively, while CO_2 / CH_4 separation factor is only 14.70. An obvious increase in P_(CO_2) with decreasing pressure difference exhibits a characteristic of facilitated CO_2 transport, which is not disappear and almost unchange after two months. There is no this behavior for N_2 and CH_4. Hence, P_(CO_2) and α_(CO_2/N_2) and α_(CO_2/CH_4) can be enhanced simultaneously.

该离聚体膜显示出良好的CO_2渗透性能，在20℃和0.05MPa压差下，CO_2渗透系数P_(CO_2)和CO_2/N_2分离系数αCO_2/N_2分别高达223 Barrer和65.70.P_(CO_2)和αCO_2/N_2随CO_2压差的降低而明显增大，显示出促进输送特征，这一行为即使在膜放置2个月之后并不消失，渗透分离性能变化不大。N_2和CH_4无此性能，因此在气体压差较低时，P_(CO_2)和αCO_2/N_2、αCO_2/CH_4可同时提高。

The ionomer membrane under the conditions of 20℃ and 0.05 MPa shows better permeaselectivities that the permeability coefficient of CO_2 and CO_2/ N_2 separation factor are 223 Barrer and 65.70, respectively, while CO_2 / CH_4 separation factor is only 14.70. An obvious increase in P_(CO_2) with decreasing pressure difference exhibits a characteristic of facilitated CO_2 transport, which is not disappear and almost unchange after two months. There is no this behavior for N_2 and CH_4. Hence, P_(CO_2) and α_(CO_2/N_2) and α_(CO_2/CH_4) can be enhanced simultaneously.

该离聚体膜显示出良好的CO_2渗透性能，在20℃和0.05MPa压差下，CO_2渗透系数P_(CO_2)和CO_2/N_2分离系数αCO_2/N_2分别高达223 Barrer和65.70.P_(CO_2)和αCO_2/N_2随CO_2压差的降低而(来源：e2b2A2bBC论文网www.abclunwen.com)明显增大，显示出促进输送特征，这一行为即使在膜放置2个月之后并不消失，渗透分离性能变化不大。N_2和CH_4无此性能，因此在气体压差较低时，P_(CO_2)和αCO_2/N_2、αCO_2/CH_4可同时提高。

Results A total of 6 suspected colonies were isolated from 65 samples, all being Gram?negative small bacilli, and red for Gimanez staining. The PCR results confirmed that the six strains were all Bartonella , two isolated from Rattus losea and Rattus brunneusculue each, and one from Niniventer fulvescens and Suncus murinus each.

结果 从65 份样本中分离培养出疑似菌落6株，革兰染色镜检均见阴性小杆菌，Gimanez 染色为红色杆菌，经PCR 证实6 株均为巴尔通体，其中分离自黄毛鼠和屋顶鼠各2株，针毛鼠和臭鼩鼱各1株。

The forth part is a review about the progress of studies on the chemical constituents from Belamcanda chinensis and Iris species. Fifty-three compounds were isolated from Rhizoma Belamcandae, the rhizomes of B.

采用正、反相硅胶柱层析、凝胶柱层析、薄层制备及HPLC等各种分离方法，从三种药用植物中共分离出68个不同的化合物，其中61个的结构得得以鉴定，另外4个化合物的结构正在鉴定中，3个由于量少且有点杂质未作进一步的鉴定。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐