查询词典 PS

The results of AFM indicate that there are many "hillocks" at the surface of PS samples and the microstructure of PS samples is quite different with different etching modes.

表面和侧面的AFM结果表明，多孔硅表面呈"小山"状，有许多小的、突出的硅颗粒。

A selective and mild PS-DIB/ionic-liquid immobilized 2, 2, 6, 6-tetramethyl-piperidin-4-ol-N-oxyl catalytic oxidation procedure of alcohols to the corresponding aldehydes and ketones in ionic liquid BF4 at room temperature was developed. The oxidant PS-DIB was prepared via the iodation and acetylation of polystyrene resin. For the preparation of the ionic-liquid immobilized TeMPO catalyst, 4-(2, 2, 6, 6-Tetramethyl-1-oxyl-4-piperidoxyl)butyl bromide was first synthesized from TeMPO and 1, 4-dibromobutane.

将聚苯乙烯树脂先碘化再乙酰基化，制得了负载型二乙酰氧碘苯作为氧化剂。2， 2， 6， 6-四甲基－N-氧自由基哌啶醇与1， 4-二溴丁烷反应生成4-溴丁氧基－2， 2， 6， 6-四甲基－哌啶－1-氧化物，再与N-甲基咪唑发生季铵化反应，生成的溴化季铵盐与四氟硼酸钠进行离子交换制得氟硼酸型2， 2， 6， 6-四甲基－N-氧自由基哌啶负载离子液体。

When the minority carrier life of PS decreases, the irradiative centers on surface of PS increase, which lead to decreasing of photoluminescence efficiency.

另外，原子力显微照片表明长时间的腐蚀使多孔硅表面层被化学腐蚀，从而降低了多孔硅表面的粗糙度。

It is to say that the patch of RAFT agent on the hairy chains.PS particles with the shell of copolymer of styrene and vinylbenzyl chloride were prepared by similar seeded and starved addition processes. RAFT agent with carboxyl end-group attached on the shell surface of PS particles by group reaction. Adding NIPA and photo-initiator into the continuous phase of polymerization system, hairy PNIPA were obtained.

最后，以表面负载一层乙烯基苄氯的亚微米级单分散聚苯乙烯微球为基质，将水溶性RAFT试剂与聚苯乙烯微球表面的官能团反应以负载到其表面，再在连续相中直接引入NIPA和光引发剂，RAFT聚合得到PNIPA毛发。

Firstly, micron-size monodisperse polystyrene particles were prepared by emulsifier-free polymerization. Then the photo-initiator with double bond and ester group were attached on the surface of the PS particles by copolymerization using "starve" addition together with styrene. Finally both poly and poly(N-isopropylacrylamide) as hybrid hairy homopolymers were grafted on the surface of the PS particles by "grafting from" photo-initiation with sequential addition of AA and NIPA.

首先，通过无皂乳液聚合法合成亚微米级单分散聚苯乙烯微球种子，半连续补加法表面负载光引发剂，运用"从表面接枝"技术及顺序添加相关单体的工艺这三步法，成功制得表面含电解质PAA及温敏性PNIPA的混合型毛发，探讨其制备过程和特性研究，表明PAA链的存在对PNIPA链的温敏性有明显影响。

Ordered macroporous SiO2 balls, exhibiting spherical structure with 200nm hexagonal-pores, have been successfully obtained by sol-gel templating method using the colloidal crystal balls consisting of the monodisperse modified polystyrene latex particles, which have been assembled into polymer opaline balls.

采用乳液聚合法合成了单分散改性聚苯乙烯乳胶粒，利用PS乳胶粒自组装制得胶体晶体微球，通过溶胶－凝胶模板法制备了有序大孔SiO2微球，通过SEM对改性PS乳胶粒、胶体晶体微球和有序大孔SiO2微球表面形貌进行了表征。

I can tell you, it's clearly photoshopped, poorly done at that.

但我可以告诉你，这是假的， PS过的，而且还PS的很差。

The experiments show that the PS and PSD of particles produced by SAA process can be controlled by adjusting process parameters, and among them, the pressure of the saturator used has the most effect on the PS and PSD, while the temperature of the saturator has the least effect. When using ethanol as solvent, the optimum operating conditions of using SAA process to produce erythromycin micro-particles from erythromycin-ethanol-CO2 system were found as follows. The pressure and temperature of the saturator are 10.5MPa and 70℃, respectively, the inlet flow rate and the concentration of inlet solution of the precipitator are 9 mLmin^(-1) and 15mgmL^(-1), respectively.

实验结果表明：选用乙醇做溶剂可制备出粒径在1~3μm的红霉素超细微粒，大部分微粒形态呈完整的球形；各影响因素对微粒粒径及粒径分布均有不同程度的影响，其中混合器压力对微粒粒径及粒径分布的影响最明显，混合器温度的影响最小，微粒粒径及粒径分布可通过改变操作参数进行控制；在本研究范围内，最优操作条件为混合器压力10.5MPa，混合器温度70℃，溶液浓度15mgmin^(1)，进液速度9mLmin^(1)。

On the other hand, the dithiobenzoate group at the end of PNIPAM block can be reduced into thiol by NaBH_4 in aqueous solution.

依照PS和PNIPAM的嵌段比的不同，PS-b-PNIPAM可以在水溶液中形成胶束或者囊泡。

Tip 4: Go to Photoshop CS2's Plug-Ins folder, and in the File Formats folder add a tilde in front of any file types that you don't use to speed up Photoshop's startup time.

在ps的插件文件夹下，把所有你暂时用不到的插件名称前面加上"~"符号，可以加快ps的打开速度。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。