查询词典 ps

The catalytic cracking of PS thermal product is assumed to proceed via carbonium ion species during which the oligomers appear to be more active.

通过PS在小型固定床反应器中热解及热解-催化结果的对比研究，就二者的产物分布差异探讨了PS热解-催化过程的正碳离子反应机理，对主要反应产物的生成途径作了推断。

The results show that the introducing of multivinyl monomer and CaCO3 can slow down polymerization rate to different extent.Using 1％～5％ trimethylolpropane trimetbacrylateor divinyl benzene,tight encapsulation of CaCO3 can be realized and beyond 94％PS cannot be extracted. The amount of crosslinker or emulsifier should be accommodated when the load amount of CaCO3 is increased.CaCO3 content in the product increases consequently with the increase of the loaded amount of CaCO3,which can be known from FT-IR and TGA.TEM observations reveal that when the load amount of CaCO3 is 14.8％,most CaCO3 particles are encapsulated and each latex particle contains one CaCO3 particle.Composite particles have well-defined core—shell structure and the thickness of polymer shells is around 10 nm.However,the thickness of polymer shell decreases and many free CaCO3 particles appear when the load amount of CaCO3 reaches 29.3％and 58.7％,respectively.

结果表明，多乙烯基单体以及碳酸钙的引入会使聚合反应速率有不同程度的降低；使用1%～5%的TMPTMA或DVB，可实现PS对碳酸钙颗粒的牢固包覆，不可抽提的PS达94%以上；当碳酸钙用量改变时，需要适当调整乳化剂和多乙烯基单体的用量；IR和TGA的结果表明，随着碳酸钙用量增加，产物中的碳酸钙含量也相应增加；TEM照片和计算结果显示，当碳酸钙用量为14.8%时，绝大部分碳酸钙颗粒被包覆，且基本上每个乳胶粒中包覆一个碳酸钙颗粒，复合粒子具有清晰的核壳结构，壳层厚度约为10 nm，而当碳酸钙用量增加到29.3%和58.7%时，壳层厚度减小，并且出现较多裸露的碳酸钙颗粒。

The geometry of these particles was analyzed by both particle size analysis , TEM and FT-IR , and was found to be perfecty spherical , and sized about 50 nm that PS core was well covered by PPy shell . The core-shell latices become unstable when the amount of PPy increased .

就PS-PPy颗粒的结构形态而言，由微粒径分析及TEM分析得知其粒径约50nm左右，制备的核壳颗粒呈均匀的圆球状，并由FT-IR光谱分析证实了PPy壳将PS内核完全包覆，只是当PPy壳的相对量增加时会对核壳乳液的稳定性造成负面影响。

At the same time, His, a specific scavenger of singlet oxygen, can remarkably inhibit the degree of destruction of photoinhibition on the components of PS Ⅱ.

同时，加入单线态氧的特异性清除剂组氨酸可明显遏制光抑制处理对PSⅡ各组分的破坏，这些结果说明单线态氧参与了PSⅡ的光破坏过程

The PS is a vehicle for a private security company (PS stands for Private Security Services) which uses a bold design language to create "a strong impact in order to be intimidating, shatterproof, high-tech and also dynamic."

PS就是一个&私人保安公司&，它是私人安全服务的代表汉阳科技版权所有，它用大胆的设计语言来创造防恐吓、防击碎、高科技和动感活力的影响力。

Results: The manufactured PS-DES as well as the sulphonated phases were respectively packed into capillaries,and the columns thus prepared were tested for their chromatographic characteristics. It was found that the PS-DES phase showed reversed-phase characteristics.

结果： 将所制得的PS-DES固定相以及磺化的固定相各自填充到毛细管内，考察这些毛细管电色谱柱的色谱性能，发现前者表现出反相固定相的性质。

Almost all CF was released from Dansyl-PE by CTX-IX that osmosed the Dansyl-PE liposome like detergent; CF releases from PE or PS liposome induced by CTX-IX were related with both of CTX-IX and phospholipid concentrations, this indicated that the phase seperation should be a reasonable mechanism for CF permeability of PS or PE liposome in the presence of CTX-IX rather than CTX-IX channel formation on the membrane. CTX-IX influence of CF release of PC liposome was very slight. CF release from Dansyl-PE、PE or PE liposome in response to CTX-IX could be inhibited by Ca〓.

CTX-IX对靶脂如此种种强烈的作用，使得它引起含Dansyl-PE脂质体CF的泄漏犹如击污剂那样强烈；引起含PS或PE脂质体CF渗透的增加为一个与CTX-IX及磷脂浓度有关的二级反应过程，这种动力学特征提示渗透性增加的机制可能是CTX-IX在脂膜上产生的脂质分子相分离，而不是CTX-IX脂膜上形成通道；CTX-IX对PC脂质体渗透性几乎没有影响，而对上述脂质体渗透性增加作用均可被Ca〓所抑制。

Results In slices superfused by intralipid, 3μmol/L propofol, 0.1μmol/L corticosterone LTP was induced by HFS (PS 40min after HFS: 1.436±0.160, 1.332±0.077, 1.385±0.095, P.01 or P.05 vs control).

结果：Intra组实施HFS后PS升高，HFS后40min时的PS为1.436±0.160，显著高于实施高频刺激前(P.01)。

The following results were obtained.(1) The dissociation of some LHCⅡs from PSⅡ complex occurred after saturating illumination, but FSBA treatment inhibited the dissociation as shown by analysis of sucrose density gradient centrifugation and low-temperature (77K) chlorophyll fluorescence.(2) A significant increase in Fo and decrease in Fv/Fm occurred after saturating illumination, and the two parameters could largely recover to the levels of dark-adapted leaves after subsequent 3 h in the dark, but they could not recover when FSBA existed during saturating illumination.

获得如下结果：（1）饱和光照明可以引起部分LHCⅡ从PSⅡ核心复合体上脱离，但FSBA处理可以抑制LHCⅡ脱离；（2）大豆叶片经过3小时饱和光处理后，初始荧光Fo明显升高，而PSⅡ光化学效率Fv／Fm显著降低，但经过随后3小时暗恢复后，Fo和Fv／Fm基本可以恢复到初始暗对照的水平，而FSBA处理增大它们的变化程度，并且放置暗中3小时后不能恢复。

Measurement of fluorescence of PS Ⅱ Reaction Center indicated F/F and F/F decreased in both alfalfas under drought stress.

3对叶绿素荧光参数的研究表明：干旱胁迫下两种紫花苜蓿PSⅡ反应中心光化学效率F(下标 v/F、PSⅡ潜在活性F

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。