吡咯烷

In addition, it is also demonstrated that the haloid ions co-absorbed on the assembly play an important role in controlling the charge transfer between PATP and silver substrate.

4利用聚乙烯吡咯烷酮共聚对聚苯乙烯微球的表面改性进行碘催化剂的固定化，制备粒径均一、可循环使用的催化剂微粒。

AIM: To study the effect of pyrrolidine dithiocarbamate, a potent inhibitor of NF2κB, proliferation and apop- tosis of human pterygium fibroblasts,inculture and search for a new method to prevent the recurrence after pterygium surgery.

目的：研究（nuclear factor，NF）2κB抑制剂吡咯烷二硫氨基甲酸(NF-B Inhibitor pyrrolidine dithiocarbamate，PDTC)对体外培养人翼状胬肉成纤维细胞（human pterygium fibroblast，HPF）增殖的影响，寻找辅助治疗和预防翼状胬肉复发的新方法。

Mix PAA and PVP to their physical mixture and prepare the PAA/PVP interpolymer complexes by solvent evaporation method.

采用自由基溶液聚合方法制得聚乙烯吡咯烷酮和聚丙烯酸均聚物。

in this study, glucose and pvp were used as main protective reagents to lyophilize human red blood cells.

试验采用葡萄糖和聚乙烯吡咯烷酮作为主要保护剂进行红细胞的冻干保存研究。

Silver nanoparticles with average particle size ranging from 2 to 131nm were manipulatively synthesized starting from silver nitrate using 10 kinds of different functional group-containing organic modifiers, such as polyvinylpyrrolidone, tween-80, sodium dodecyl sulfate, sodium polyacrylate, polyethylene glycol, D-sorbitol, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, polyvinyl alcohol, cetyltrimethylammonium bromide, at room temperature.

摘 要：选择10种含有不同官能团的有机物为表面修饰剂，如聚乙烯吡咯烷酮、吐温-80、十二烷基硫酸钠、聚丙烯酸钠、聚乙二醇、山梨醇、十二烷基磺酸钠、聚乙烯醇、十二烷基苯磺酸钠和十六烷基三甲基溴化铵等，在室温下进行了平均粒径在2～131nm范围内纳米银颗粒的控制合成研究。

Study on the Effect of Azone on Percutaneous Absorption of Clindamycin Hydrochloride in Cream;2. OBJECTIVE To observe the effects of three transdermal enhancers( azone ,isopropyl myristate,oleic acid) in vitro under the condition of iontophoresis with diclofenac sodium as the model drug.

方法选择聚乙烯醇、聚乙烯吡咯烷酮、羟丙甲基纤维素为基质，制备了分别含有月桂氮酮、肉豆蔻酸异丙酯和油酸的双氯芬酸钠经皮离子导入凝胶，采用改良Franz纵向释放池，以人体皮肤为透皮屏障，进行药物凝胶的离子导入经皮试验。

Alumina sols of different content were prepared by using Al3 as precusor, water as solvent, nitric acid as peptizer, ethylacetoacetate and polyvinylpyrrolidone as modified menstruum. We used dip-coating method and spin-coating method prepared of alumina films on the plane glass and used dip-coating method and rising liquid method inside the wall of the fiber.

以仲丁醇铝为前驱物、水为溶剂、硝酸为胶溶剂、同时加入乙酰乙酸乙酯和聚乙烯吡咯烷酮作为改性剂制备了不同浓度的氧化铝溶胶用提拉法和旋覆法在平板玻璃上镀膜，同时用提拉法和液面上升法在石英毛细管内壁上镀膜。

Rapid dehydration is the worst.4. Effect of preculture Beads were encapsulated and incubated in culture medium containing 2% PEG and 5% PVP respectively for 90 min before dehydration.

预培养的影响将胶球在分别含有2%聚乙二醇和5%聚乙烯吡咯烷酮的培养基中预培养90min后脱水。

TheMn complexes with internal quaternary ammonium and/or pyridinium salt, either formed in-situ or isolated, displayedsignificantly higher activities than analogous complexes and Jacobsens catalyst in theaforementioned reaction.

通过研究发现，含有分子内季铵盐和／或吡啶盐的手性吡咯烷Mn配合物，无论是原位生成的还是分离的，都比类似的配合物以及Jacobsen催化剂的活性明显高。

As a common solvent in the preparation of PU dispersion s,n-methyl pyrrolidone has been labeled toxic and was restricted in use,needing to be replaced.

作为制备聚氨酯分散体常用的溶剂，N-甲基吡咯烷酮已被欧美颁布的法规标识为有毒，使用受到限制，需要进行替换。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。