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The spectral properties of different mass percentages of the porphyrin (5, 10, 15, 20-tetra-p-tolyl-21H, 23H-porphine, TTP) doped poly [2-methoxy-5-(2'-ethylhexyloxy)-1, 4-phenylene vinylene] were studied by UV-Vis absorption and fluorescent emission spectra in this paper.
研究了不同质量浓度卟啉掺杂的MEH-PPV的紫外吸收和荧光发射光谱。
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In pH2.5 potassium hydrogenphthalate buffer solution, a supermolecular can be developed betvveen Cu-TZAMB complex and DNA, which can decrease the cathodic peak of this complex. This supermolecular complex was testified to be intercalating bound to the DNA by cyclic voltametric method, salt effect and the UV-VIS spectra.
通过循环伏安法、盐效应以及紫外-可见吸收谱证实了是由Cu-TZAMB络合物与DNA形成一种插入式的电惰性结合物而使其峰电流下降。
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This is the first report of pectenolone and pectenoxanthin, two types of carotenoid, in the muscle of the Yesso scallop.3 Roles of the carotenoids composition and accumulation in Yesso scallopThe method for detecting carotenoids using reverse phase high performance liquid chromatography was developed. The conditions of RP-HPLC analysis were an analytical scale (200×4.6 mm, inner diameter 5μm) Eclipse XDB-C18 column of Agilent corporation; 10μl injection volume; 25°C column temperature; acetonitrile, methanol and methylene dichloride mobile phase (40:56:4, V/VV) with 0.1% BHT; 1.0 ml per minute flow rate; 450 nm UV-VIS detector; 8 minutes elution.The carotenoids from orange muscle of Yesso scallop of 7, 10, 12, 15, 18, 22 months old was detected using the method refered above.
通过柱层析、高效液相等手段对橘红色闭壳肌中的主要类胡萝卜素进行了提取分离,分离提纯得到两种类胡萝卜素,并通过MS、~1H-NMR和~(13)C-NMR对其进行结构鉴定,结果表明(3S,3\'R)-3,3\'-dihydroxy-7\',8\'-didehydro-β,β-Caroten-4-one和(3S,3\'S)-7,7\',8,8\'-tetradehydro-β,β-Carotene-3,3\'-diol,俗称pectenolone和pectenoxanthin是橘红色闭壳肌中的主要类胡萝卜素,这是国内外首次对虾夷扇贝闭壳肌中的类胡萝卜素进行提纯及结构鉴定。3虾夷扇贝类胡萝卜素的种类组成和累积变化规律建立了橘红色闭壳肌中类胡萝卜素的HPLC分析定量检测技术:色普柱为Agilent公司的Eclipse XDB-C18柱200mm×4.6mm,i.d.5μm进样体积,5μl ;流速1ml/min;检测波长450nm;柱温25℃;流动相为乙腈:甲醇:二氯甲烷(V/V/V=40:56:4并加入0.1%的BHT;分离时间为8min。
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Mesoporous zincum sulfide is synthesized by gentle wet chemosynthesis method, with DDA as templates and Zinc acetate and TAA as precursors. The effect to the synthesis of the ratio of reactive components, the volume of pH, reactive time and reactive temperature has been dicussed systematically, and structures of the as-synthesized samples have been characterized by X-ray diffraction, N2 adsorption-desorption, scanning electron microscopy, Fourier transform-infrared spectra, UV-vis diffuse reflectance spectroscopy, transmission electron microscopy.
以十二胺为模板,醋酸锌及硫代乙酰胺为前驱体,温和湿化学法合成了硫化锌无序介孔结构,系统研究了反应物配比、pH值、反应温度、反应时间对材料合成的影响,运用X射线衍射、N2吸附-脱附、扫描电镜、红外光谱、紫外-可见吸收光谱、透射电镜等分析手段对介孔材料的结构进行了详细的表征。
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The broadening of XRD peaks, the blueshift of interband optical absorption edge and the change of Raman scattering spectra were observed.
利用X。射线衍射、UV-VIS吸收光谱和拉曼光谱对复合材料中的ZnSe纳米粒子进行了光谱表征。
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The success of the Shanghai bank VIS bases on a open-and-shut reason :appropriate that it is a unique brand connotation symbol,after threshing 、considering again and again.
上海银行品牌规划设计的成功,其实是基于一个精心推敲、反复砥磨、深思熟虑之后极简单的理由——合适,无可替代的独一无二的品牌内涵象征。
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The Fe^0 concentration and pH had optimal values during the decolorization of X-BR in Fe^0-anaerobic biological system. When Fe0 dose, initial pH value and X-BR concentration were 400 mg/L, 7 and 100 mg/L respectively, the decolorization rate of X-BR in the integrated system could reach up to 90% after 68 h reaction. Compared with pure Fe^0 and pure microorganism treatment systems, it could be improved about 40% under the same experimental conditions. In addition, the analysis result of UV-vis spectrogram indicated that Fe^0 could promote effectively biodegrading of anthraquinone dye X-BR and its intermediate products.
结果表明,在Fe^0-厌氧微生物体系中,Fe^0投加量和pH值均存在最适宜值,当两者分别控制在400mg/L和7,染料初始浓度和反应时间分别为100mg/L和68h时,该体系脱色率可达到90%以上;与相同反应条件下的纯Fe^0、纯厌氧微生物体系相比,该体系的脱色率提高近40%根据紫外可见光谱分析,Fe^0可有效促进厌氧微生物对X-BR及其中间产物的降解,实现完全脱色。
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The CoFe2O4/TiO2 magnetic nano-photocatalysts has fairly good magnetic property. The X-ray diffraction, transmission electron microscopy and ultraviolet-visible technique were used to analyze the phase structure, size and spectrum response scope of the samples. The XRD indicated the anatase TiO2 was formed when TCF modified by plasma. The size of CoFe2O4 particles was about 20 nm. The diameter of CoFe2O4/TiO2 particles is in the range of 30~40 nm. So the shell of TiO2 enwraps closely around the core and the thickness is in the range of 10~20 nm.
运用VSM技术对样品磁性能进行研究,结果表明:等离子体修饰后的复合材料仍具有较高的饱和磁化强度,可在外加磁场作用下实现催化剂在水中的分离与回收;样品的XRD、TEM和UV-Vis分析测试结果表明:等离子体修饰后的复合材料有锐钛矿型TiO2存在;TEM谱图显示磁核CoFe2O4的平均粒径约为20 nm,TCF复合粒子的粒径约为30~40 nm,TiO2包覆层的厚度为10~20 nm。
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Using Vis/NIR spectrometer for refrigerated silkworm eggs and Hibernated silkworm eggs to identify the place and varieties.
采用可见-近红外光谱仪对冷藏浸酸种和越年种进行了产地和品种的鉴别。
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The result of UV-Vis absorption, fluorescence, circular dichroism and cyclic voltammetry indicated that the complex bound to ct-DNA mainly in an intercalating mode.
与溴化乙锭和DNA的竞争反应说明,该配合物主要以嵌入方式与DNA结合。
- 推荐网络例句
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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
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Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。