查询词典 absorption

In a traditional total quantity distillation setup or a half micro-distillation setup, the separation and absorption of ammonia and constant volume must be done separately, so the analyzing program is complex and needs long analysis time. By the rapid azotometer (Type: NC2), the ammonia in the waste water could be analyzed through one step which includes separation, absorption and titration. Compared with the tradition analysis methods, the ammonia-N in waste water can be analyzed more quickly.

含氨废水通过NC2定氮装置将氨分离，吸收，滴定集为一体，克服了传统全量蒸馏装置或半微量蒸馏装置将废水中的氨分离，吸收，定容分步进行的复杂，耗时缺点，从而达到快速测定废水中氨氮含量的目的。

Compared with the absorption positions of chlorophyll in acetone, a bathochromic shift was observed at the absorption peaks of chlorophyll in DMF and DMSO.

与叶绿素在丙酮溶剂中的光谱特性吸收峰位置相比较，叶绿素的光谱特性吸收峰在DMF与DMSO两种溶剂中显现了向红位移。

Absorption spectral studies show that binding to the serum albumins leads to a bathochromic shift of the monomer band together with a notable intensity change. Furthermore, the number of binding sites was identified by the absorption spectra.

吸收光谱数据表明，与血清蛋白结合后，噻菁染料单体的吸收峰发生红移，同时强度也有很大变化；还通过吸收光谱计算确定了噻菁染料与血清蛋白的结合位点数。

The results have indicated that the introduction of electron-donating methoxy or electron-withdrawing cyano-group at the 7-position of 3-phenylcoumarins caused a bathochromic shift for both absorption and fluorescence spectra. The phenyl group at the 4-position derivative has a hypsochromic shift for both absorption and fluorescence spectra.

结果发现，在3-苯基香豆素的7-位引入给电子基团甲氧基或吸电子基团氰基均使它们的吸收光谱和荧光光谱产生红移，4-苯基香豆素的衍生物的吸收光谱和荧光光谱均产生蓝移。3-苯基香豆素衍生物与4-苯基香豆素的衍生物的基态和激发态的电子转移方向相反。

As an extension to the "973" Program of National Planning key basic research project -----the study of China lake nutrient over-enrichment process and the mechanism of blue alga outbreak, this paper introduces our experiments as below:(1) Experiment on heavy metal absorption and disorption abilities of Ceratophyllum demersum , Hydrilla verticillata and Myriophyllum triphyllum, in order to campare their absorption capability .

本文在前人的研究基础上，依托国家&973&国家重点基础研究规划项目&湖泊富营养化过程与蓝藻水华暴发机理&，开展了下列工作： 1、选取狐尾藻、金鱼藻、黑藻三种大型沉水植物作为研究对象，通过对重金属离子铜离子的吸附及解吸实验，比较其三种沉水植物之间吸附能力的大小； 2、选取狐尾藻、黑藻为研究对象，研究了重金属离子铜离子对沉水植物的胁迫作用及铜离子在植物体内的富集情况； 3、选取黑藻为研究对象，研究了沉水植物在富营养条件下不同浓度的氨态氮和硝态氮对沉水植物的生理生长的影响。

It is found that when the cocurrent adiabatic absorption is employed in the absorber, the temperature lift is 3～5℃ higher than that of common countflow absorption, and other performances have some improvement.

在实验中发现，吸收塔吸收过程采用并流绝热流程，其温升比传统的逆流吸收方法可提高3～5℃，其它性能也有不同程度的提高。

The influences of the inlet solution flow rate, the inlet solution temperature, the absorption pressure and the colling condition on heat and mass transfer of absorption process have been discussed.

在此基础上，设计、研制、安装并调试了竖板及矩形通道降膜吸收试验台本体；确定测量方法，选取测量装置并对测量系统不确定度进行了分析。

The UV and IR spectroscopic studies of the monomer films showed that the photoreaction ratio of monomer (about 50%) was higher than the corresponding photosensitive polymer (about 10%, PVCi). The polarized IR spectra proved that obvious anisotropic absorption was displayed in the irradiated photosensitive film. With polarizing microscopy method, we found that these kinds of photoalignment films exhibited good alignment ability, and the stability of the photoalignment film could reach about 100℃. 2 A photosensitive self-assembled monolayer was fabricated that contained photo-cycloadditable groups, such as, coumarin and cinnamate. The reaction process were detected by contact angle method because the IR absorption of monolayer was very weak. The photosensitive self-assembled monolayer promote uniform alignment of nematic liquid crystals by LPUV, and it thermal stability could reach about 130℃. 3 A cationic bolaform amphiphiles was synthesized that had two photosensitive double bonds, and can be polymerized by ultraviolet. A layer-by-layer self-assembled deposition film was prepared in aqueous solution by using this material and poly (sodium 4-styrenesulfonate). The UV-Vis. spectra proved that the multilayers film was uniform and layer-by-layer. When LPUV irradiated the film, the photopolymerizable double bond underwent [2+2] cycloaddition, and the production of the reaction distributed along the polarized direction of incident LPUV. Polarized UV-Vis. spectra indicated that the irradiated self-assembled multiplayer film was anisotropic, and the dichromic ration is about 0.09, it is higher than the spin-coating method of photosensitive polymer or monomer. We used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stability alignment result, the static contrast ratio is about 100, which is very close to application of liquid crystal device. This thesis is an instance that the photochemical material was used in the physics region of liquid crystals, the route that was from photosensitive monomer, self-assembled monolayer film to self-assembled multiplayer film was undergone, by this logical research method photoailgnment of liquid crystal was extended and consummated.

围绕上述思路开展了如下工作：1合成了三种可进行光二聚反应的光敏小分子单体，LPUV 辐照制作了光控取向膜；用紫外-可见光谱法和红外光谱法分析了薄膜中的光化学反应，发现小分子的光反应程度可达到50%以上，至少比光敏高分子高出5倍；薄膜的偏振红外光谱证实，经过LPUV 辐照后薄膜出现了明显的各向异性；将小分子光控取向膜制成液晶器件，在偏光显微镜下观察看到均匀一致的液晶取向；并且热稳定性达到100℃左右，接近实用化要求。2制备了含肉桂酸、香豆素基团的自组装单层膜；采用接触角的方法监测自组装反应的动力学过程；紫外-可见光谱证实了自组装单层膜在石英基板表面形成；自组装单层膜经LPUV 辐照后能诱导液晶均匀取向，而且热稳定性可达130℃，热稳定性进一步提高。3合成了含有光敏双键的双季铵盐，在水溶液状态下将它和聚乙烯基苯磺酸钠沉积生成layer-by-layer 自组装多层膜，紫外-可见光谱证实这是一个逐层均匀的沉积；在LPUV 照射下，自组装膜中的光敏双键按照偏振方向发生[2+2]环加成反应，形成取向膜，用二向色性值评价的分子取向度高于高分子及小分子光控取向膜的水平；实验证明用自组装多层膜制成的液晶器件亮暗态均匀，静态对比度约为100，达到实用化器件的水平。

In 0.015 mol/L NaOH medium, AuCl4(superscript -)reacted with hexadecyl trimethyl ammonium bromide, forming water soluble CTMAB-AuCl4 complex that exhibited a weak absorption peak at 400 nm. In the presence of hydrazine, the reaction produced orange-red nanogold particle and exhibited a surface plasma resonance absorption peak at 520 nm.

在0.015mol/LNaOH介质中，氯金酸根离子AuCl(上标-下标 4与阳离子表面活性剂十六烷基三甲基溴化铵反应生成水溶性的CTMAB-AuCl4缔合物，在400nm处产生一个很弱的吸收峰，当有肼存在时，反应生成橙红色的金纳米粒子，在520nm处出现一个表面等离子体共振吸收峰，从而可实现废水中微量肼的分光光度测定。

Six experimental stages were designed in our procedure, those are:(1) metabolite recovery and tested sample preparation: the metabolites were recovered by Amberlite XAD-2 absorption, followed by MeOH elution and solvent concentration;(2) antioxidant detection and strain selection: samples were quantitatively analyzed by the inhibition effects on formation of lipid peroxides and TBARS to screen the strains able to produce antioxidants. According to the established screening methods, we chose out a strain of actinomycetes, designed as AMBL-029C;(3) antioxidant purification: the fermentation broth was recovered by a series of separation techniques including centrifugation, Amberlite XAD-2 absorption, followed by MeOH elution and a successive TLC purification. The resulting primary purified compound [temperately designed as AMBL-029C-TS] was further analyzed by HPLC to monitor its purity;(4) physical-chemical characteristics: judging from the acid-base fractionation experiments, and the pH and temperature stability tests, the compound was deduced to be a acidic compound with the properties of low polarity and highly pH and temperature stable;(5) mechanism of the antioxidant: in comparison with some other known antioxidants, TS was subjected to investigate its antioxidant mechanism, together with BHT,-tocopherol, as well as two streptomyces metabolites, homogentisic acid and -phenylpyruvic acid, which were previously isolated as the natural antioxidants in our laboratory.

针对本实验目的，我们设计了以下的实验步骤﹔（1）二次代谢物回收及检测样本处理：我们将发酵所得的培养上清液，利用疏水吸附性树酯Amberlite XAD-2吸附回收，并以甲醇溶离及真空减压浓缩脱水等方式处理，以取得提供抗氧化活性筛选之检测样本；（2）抗氧化活性检测及菌种筛选：以「过氧化脂质」和「硫丙二醯尿」的生成量进行定性定量分析以作为抗氧化物质生产菌筛选之用；经此筛选程序，我们选获了具有抗氧化物质高生产力的菌株，命名为AMBL-029C；（3）抗氧化物质的分离纯化：针对生产菌株的发酵回收处理液，以矽胶薄层色层分离法经物质层析纯化后，并以高效能液相层析法(High performance liquid chromatography；HPLC)分析物质可得一初级纯化物质，命名为AMBL-029C-TS；（4）抗氧化物质的物理化学性质分析：由酸碱转溶（acid-base fractionation）实验得知，此抗氧化物质属於中低极性的强酸性物质，对温度（37℃-100℃）及酸碱度（pH3.0-13.0）均表现出高稳定性；（5）在抗氧化机制探讨方面，我们针对数种不同的抗氧化机制进行探讨，即： 1。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。