查询词典 cationic

This thesis consists of three main parts of the research work on the syntheses, structures and reactivities of the olefin-coordinated transition metal carbene and carbyne complexes. In chapter 1, on the basis of our previous research works on the reacitivites of the cationic carbyne complexes of transition metals with metalcarbonyl anions, we explored the reactions of the cationic carbyne complexes of manganese (1) and rhenium (2) with polymetalcarbonyl anions, and developed a new method for the preparations of heternuclear trimetal bridging carbyne complexes.

本论文对烯烃配位的过渡金属卡宾和卡拜络合物的合成、结构和反应性能进行了研究，主要进行了如下三方面的工作：第一章在本小组过去的研究基础上，进一步考察锰和铼的阳离子卡拜络合物1和2与羰基金属阴离子化合物的反应，用来合成异核多金属桥卡拜络合物，发展合成多金属桥卡拜络合物的新方法和新路线。

The application results showed that the softness of the paper is 575 mN compared with the softness of the paper without softener is 897 mN when the cationic degree of the softener is 0.6 and its dosage is 1.0%. The cationic diamide softening agent has a perfect softening effect and an application prospect in papermaking.

以草浆为原料抄纸，通过纸张应用实验表明，在配制乳液时加入10%十六烷基三甲基氯化铵作为乳化剂，所得柔软剂乳液分散均匀、稳定，有利于柔软剂与纸张纤维发生较好的吸附，当柔软剂的阳离子度为0.6，其用量为1%时，纸张的柔软度可达到575 mN。

Demonstrated by adsorptive capacity and adsorptive energy, polyacrylamides have strong interaction on mineral surface with similar action mode to that of starches, for example, hydrolyzed polyacrylamide and hydroxamic acid polyacrylamide mainly by chemical force, cationic polyacrylamide by electrostatic force and hydrogen bond, nonionic polyacrylamide by hydrogen bond, while amphoteric polyacrylamide embodying both the characters of anionic and cationic one.

聚丙烯酰胺类化合物在矿物表面的吸附能以及吸附量均显示出药剂与矿物间存在的强作用，作用方式与淀粉类药剂相似：阴离子聚丙烯酰胺、羟肟酸聚丙烯酰胺主要靠化学作用，阳离子聚丙烯酰胺借助静电力和氢键，非离子型的聚丙烯酰胺则主要是氢键作用，两性聚丙烯酰胺同时具有阴离子和阳离子聚丙烯酰胺药剂的作用特点。

In this work, cationic kraft pulp was prepared by grafting copolymerization using acrylamide and cationic monomer ［2- ethyl］ trimethyl-ammonium chloride.

实验结果表明，当引发剂硝酸铈铵的用量从2%提高到8%时，纸浆的接枝率和阳离子表面电荷密度稳步提高；进一步提高引发剂的用量，纸浆的接枝率和阳离子表面电荷密度变化平坦。

They cationic monomer Acryloyloxyethyl ethyl trimethyl ammonium chloride and resource-rich, low price, low values of weathering burning coal as its main raw material, aqueous dispersion polymerization methods, through the weathered coal / cationic monomer in-situ polymerization in the international arena for the first time prepared by a high efficiency oil-bearing wastewater treatment agent; use of oil-field wastewater treatment, the waste slurry as raw material, has developed the world's first CWS dispersants and oil fields of the "three mining" using profile control plugging agent, in order to The high value of solid waste has opened up new avenues of applications; integration of related technologies, and open up for the oil field wastewater treatment, an annual output of 300 tons of sets of processes and devices for the first time realized the slop oil and drilling fluid back row of the industrialization of treatment .

他们以阳离子单体丙烯酰氧乙基三甲基氯化铵与资源丰富、价格低廉、燃烧值低的风化煤为主要原料，采用水介质分散聚合方法，通过风化煤/阳离子单体原位聚合技术，在国际上首次制备出高效含油废水处理剂；采用油田废水处理后的废弃物泥浆为原料，在国际上率先开发出水煤浆分散剂和油田"三采"用调剖堵水剂，为固体废弃物的高值化应用开辟了新途径；集成相关技术，开拓出针对油田废水处理、年产300吨的成套工艺和装置，首次实现了油田污油水和钻井返排液的工业化处理。

The reaction characteristics of flocculus formed in the reaction of cationic polymer to hydrolyzed polyacrylamide and the mass ratio of cationic polymer to HPAM in complete reaction were investigated experimentally. The flocculus has good ability to reduce the core permeability and the capability of washout resistance.

室内实验结果表明，阳离子聚合物与阴离子聚合物发生反应可产生稳定的絮状沉淀，完全反应时阳、阴离子聚合物的质量比为 30∶1；当絮状沉淀的浓度较高时，它具有很好的携砂能力，絮状沉淀可使岩心的渗透率降低 88%以上，且具有良好的抗冲刷能力。

From the results of IR and XPS spectrocopy. The cationic sol components H〓SiO〓 and 〓 of the solution trend to adsorp on the surface of electronegative aegirine because of electrostatic acctraction each other, and interrupted the collector's reaction with Fe〓 on the surface. Hence the flotation of aegirine was decreased, on the other hand, there is electrostatic repulsion between the surface of hematite and the cationic sol H〓SiO〓.〓, Which has advantage to dispersion of hematite particles, therefore, the hematite flotation is achieved sucessfully with anionic collector.

根据红外光谱和XPS测试结果可知，在弱酸性介质中，活性硅酸胶体抑制剂中荷正电的胶团H〓SiO〓及〓由于电性吸引而选择性地覆盖在荷负电的钠辉石表面，从而阻碍了阴离子捕收剂与表面Fe〓的配位作用，导致钠辉石的浮游被抑制；而赤铁矿表面由于荷正电，与矿浆中的H〓SiO〓、〓等硅酸胶团存在着电性排斥作用，有利于赤铁矿颗粒的稳定分散，所以赤铁矿能够被脂肪酸捕收剂吸附而选择性上浮。

Based on the associated reactions of bromothymol blue with cationic surface- active agent when put in phosphate buffer solution of pH7.5～8.5 and fades, a new way for determination of cationic surfactant by Spectrophotometric methods was established.

摘 要：基于溴百里酚蓝在 pH7.5～ 8 5的磷酸盐缓冲介质中，与阳离子表面活性剂发生离子缔合反应，而使溴百里酚蓝褪色这一现象，建立了分光光度测定阳离子表面活性剂的新方法。

One of the most important breakthroughs in cationic polymerization in 1980s is perhaps the discovery of living cationic polymerization.

摘 要：在80年代，阳离子聚合研究的一个最重要突破可能就是活性阳离子聚合。

In the pH range of 6~12, the results of the flotation tests indicate that the performance of the new combined cationic collector (CS3:CS1=3) and (CS3:CS2=2) is similar, and they are effective collectors for reverse flotation of the iron ores. The combined cationic collectors exhibited the same collectability as dodecylamine, but better selectivity than dodecylamine. By using the combined collector, the dosage of the collector decreased from 1 10-4mol/L to 1 x 10-5mol/L .

单矿物可浮性试验结果表明，在pH=6～12的范围内，新型组合药剂CS_3：CS_1=3和CS_3：CS_2=2具有相近的药剂性能，在其捕收能力与十二胺相当的前提下，不但选择性较十二胺好，而且还能显著提高药剂的协同效应，使药量从单用时的1×10~(-4)4mol／L降至1×10~(-5)mol／L，是铁矿石反浮选的高效捕收剂。

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。。。。