离子载体

In the preparation method, zirconium is mixed with benzenephosphonic acid according to the molar ratio of 1:2 to 1:4, and Alpha-zirconium phenyl phosphonate is produced by centrifugal washing after one to five days of crystallization under the temperature of 50 DEG C to 100 DEG C; deionized water is added in order to prepare Alpha-zirconium serosity, the solid content of which is 4 percent to 8 percent; the Alpha-zirconium serosity is granulated and dried by a rotary spray dryer, the feeding speed of the Alpha-zirconium serosity imported into an atomizer is controlled between 20ml/min and 80ml/min, and the temperature of a hot air inlet is controlled between 120 DEG C and 200 DEG C.

本发明涉及一种大比孔容微球α-苯膦酸锆及其制备方法，其颗粒尺寸为10～100μm，比孔容为0.908cc/g，比表面积为125.8m 2 /g；其制备方法是将锆和苯膦酸以摩尔比1∶2～1∶4混合，在50～100℃温度条件下晶化1～5天，离心洗涤得到α-苯膦酸锆；加入去离子水配制α-苯膦酸锆浆液，其固含量为4-8％；将α-苯膦酸锆浆液用旋转式喷雾干燥器进行造粒、干燥，控制α-苯膦酸锆浆液输入雾化器的进料速度为20～80ml/min，控制热风进风口温度为120～200℃；该方法具有操作简单、合成条件温和，对环境污染小等特点，该材料应用于催化、催化剂载体、吸附、离子交换等方面。

The present research work focuses on two aspects. On one hand, the most successful alkaloid-derived ligands have been attached to a soluble or insoluble support covalently, but additional OsO〓 is necessary to maintain the consistent catalytic activity during the reuse of supported chiral ligand in the next AD reaction. On the other hand, immobilization of osmium tetroxide based on microencapsulation, ion-exchange techniques, and osmylation of resins has made it possible to recover and reuse of the osmium, but failed to recover the chiral ligand at the same time.

目前的研究主要集中在两个方面：一方面，将手性配体共价键合到不溶或可溶性载体上制成负载手性配体，但在重复使用负载配体时必须补充OsO〓，才能保证催化活性不降低；另一方面，将OsO〓包裹在高聚物微囊内，或运用离子交换技术或共价键合的方法将OsO〓固载在树脂、硅胶或层状双金属氢氧化物材料上，但手性配体却不能同时回收。

It is ultra-fine powder of antibacterial effect with high quality synthetic zeolite catalyst, with silver antibacterial effect of zinc and other metal ions to form a uniform dispersion stability to the frame structure of zeolite.

它是以优质合成沸石为载体，把具有抗菌作用的银锌等多种金属离子以稳定的形态均匀地分布到沸石的架状结构中，以及多种助剂复合而成的具有抗菌作用的超微细粉末。

Compared with the previous method, the improved route can provide directly a spheroid form of immobilized lipase particles of which the size can be controlled by adding non-ionic surfactants during the preparation process so as to increase the recovery rate of enzyme as well as decrease the external diffusional restriction which can diminish the enzyme activity. The improved method can also alter the hydrophobicity and microstructure of the immobilized enzyme matrix by changing the molar ratios of different alkoxyl silanes so as to enhance the enzyme activity by a"surface active effect"and eliminating the internal diffusional restriction.

与前人的制备方法相比，改进的方法可直接制得球形的固定化酶颗粒，而且颗粒的大小可以通过在制备过程中加入非离子型表面活性剂加以控制，从而可以提高固定化过程的酶活回收率和减小外扩散效应对酶的表观催化活力的影响；改进的方法还可以通过改变原料硅氧烷的种类及配比来改变最终制得的固定化载体的疏水性质及微观结构，从而通过对脂肪酶的&界面活化&作用和减小内扩散效应提高固定化脂肪酶的表观酯化活力。

The main results are as follows: 1 Taking advantage of the porosity and being carrier of anodic alumina, we reported the luminescence of Eu , dye Ru L〓X〓 Ru (Ⅱ(4, 4'-dicarboxyl-2, 2'-bipyridyl)〓〓, and silica gel film anchored porous anodic alumina prepared by self-assembling and deposition.

主要内容如下： 1 利用多孔氧化铝非常高的孔隙率以及它作为载体的优点，采用自组装及沉积的方法将稀土Eu离子、凝胶和有机染料镶嵌于其中，研究了多孔氧化铝复合材料的光致发光。

Good thermal stability, High mechanical strength.Used as catalyst or catalyst carrier in the manufacturing of the important industrial products, such as cyanuramide, benzene anhydride, maleic acid anhydride, butadiene rubber, acrylic nitrite, etc.

用途：本产品在三聚氰胺、苯酐、顺丁烯二酸酐、顺丁橡胶、丙烯腈等重要工业品生产中用作催化剂及催化剂载体，也广泛用于石化产品的精制脱除芳烃，也可用于有机气体、液体的选择性吸附分离及离子交换脱除水中多价有害元素等。

Recently, study on the ISEs with anti-Hofmeister selectivity pattern is an important and interesting subject in the field of electrochemistry and electroanalytical chemistry.

新型传感器材料特别是新型选择性载体的设计、合成和应用不仅是离子选择性电极研究的一个重要方向，而且也是现代化学关注的主要问题。

Recently, study on ion-selective electrodes with anti-Hofmeister selectivity pattern is an important and interesting project in the fields of electrochemistry and electroanalytical chemistry.

研究发现，以呋喃甲醛甘氨酸合铜为载体的电极对水杨酸根离子有高的选择性并呈现出反Hofmeister选择序列行为。

The results showed that expression plasmid pET22b-lysB was constructed successfully. Highly purified recombination protein was obtained 33.2 mg from 1 L LB culture medium. A screening for His-LysB activity on esterase and lipase substrates confirmed the lipolytic activity. With p-nitrophenyl butyrate as substrate, the thermal stability of the enzyme was poor when the temperature was above 30oC. The enzyme exhibited higher stability at pH 5.0–9.5. The optimum temperature and pH for the lipolytic activity of His-LysB were 23oC and 7.5 respectively. Under the optimum conditions, the specific activity of His-LysB was 1.3 U/mg. Zn2+, Cu2+, Mg2+, Mn2+and phenylmethane sulfonyl fruoride severely inhibited the lipolytic activity of His-LysB.

结果表明：成功构建了pET22b-lysB表达载体，并从1 L的LB培养物中获得了33.2 mg高纯度重组蛋白；His-LysB具有分解脂肪的能力，属于脂肪酶；生物化学特性分析表明：丁酸对硝基苯为水解底物，His-Lys热稳定性不佳，30℃以下比较稳定，随着温度的升高，稳定性逐渐降低；该蛋白具有较高的pH值适应性，pH 5.0~9.5范围内稳定性较高；在23℃和pH 7.5时酶活力最高，其比酶活为1.3 U/mg；金属离子Zn2+、Cu2+、Mg2+、Mn2+和苯甲基磺酰氟抑制剂对酶活具有强烈的抑制作用。

Objective To express and characterize the C terminal fragment of HEV ORF2. Methods The gene encoding C terminal 128 amino acid fragment of HEV ORF2 was inserted into nonfusion expression vector pBV220. The resultant pBVORF2.3 was transformed into E.coli strain DH5α.

用pBV220载体进行抗原的非融合表达，包涵体经变性凝胶过滤层析及离子交换层析纯化后透析复性，以Western blot、ELISA、动物免疫与抗原捕获RT-nPCR等方法研究其免疫学特性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。