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- By IR spectrum, Tyndall effect, electric conductivity, UV Vis and ESR spectra were studied the reaction mechanism of catalyst components. 已知在加氢汽油介质中Ni(naph)2-Al(i-Bu)3-(BF3·OEt2+n-C8H17OH)体系为胶体催化剂。 本工作应用FT-IR谱结合Tyndal效应、电导率、UV-Vis、ESR谱对催化剂各组分的相互作用进行研究。
- Their structures have been characterized by UV Vis,IR, 1HNMR and MS spectra. 它们的结构分别用紫外可见光谱、核磁共振谱、红外光谱和质谱进行了表征。
- The PUIs obtained were characterized by FTIR spectroscopy, UV Vis spectroscopy, DSC and TGA. 用红外光谱、紫外 -可见光谱、DSC和 TGA等手段对合成的 PUI进行表征 .
- The relationship between the stop band of colloidal crystals and the diameters of polymer microspheres were investigated by using UV Vis spectra. 利用紫外 -可见光谱研究了胶体晶的光禁带峰位与组成其微球粒径之间的关系 .
- The activity of POD,CAT,the contents of soluble protein,total sugar,MDA and chlorophyll in leaf were determined by 754 GW specord UV vis. 采用754GW紫外-可见分光光度计测定石斛叶中MDA,可溶性蛋白质、可溶性总糖及叶绿素含量;
- The experiments of stability, UV VIS absorption, paper chromatography profile and amino acid composition analysis showed the new component is a polypeptide antibiotic. 精制品经过稳定性、呈色反应、紫外可见光谱、纸层析谱、氨基酸组成等检测,表明该物质是一种多肽类抗生素
- The optical band gap energy of CuInS2 thin films, deduced from the optical transmission spectrum, was 1. 50 eV. 结果表明;所制得的样品为四方结构的多晶CuInS_2薄膜;Cu/In比接近化学计量比;其光学禁带宽度为1.;50eV。
- The transmission spectrum and polarization spectrum of Cu/PAA composite films were measured. 测量了铜/多孔铝复合膜的透射光谱和偏振光谱。
- UV VIS, IR spectra and colouration mechanism of the emerald from Malipo, Yunnan Province, are studied.The LRM, IR and UV VIS analytical testing techniques are employed in the research. 以云南祖母绿为研究对象,采用LRM,IR,UV-VIS等现代测试分析方法,重点对云南麻栗坡祖母绿的可见、红外吸收光谱及呈色机理进行研究。
- The TS 1/diatomite catalyst was prepared for the hydroxylation of phenol with H2O2 in a fixed bed reactor and the effect of pretreatment on the properties of TS 1/diatomite were studied with FT IR, XRD, UV Vis, ICP AES and NH3 TPD techniques. 以固定床催化苯酚羟基化制苯二酚为目标反应,制备了负载型TS-1/硅藻土催化剂。 运用FT-IR、XRD、UV-Vis、ICP-AES和NH3-TPD等表征手段,研究了预处理介质对TS-1/硅藻土催化剂物化和催化性能的影响。
- The UV VIS spectra showed that BR was totally denatured and lost its retinal under the pH 12 6. It was found by atom force microscope that the crystalline lattice of purple membrane was broken down at this pH. 紫外可见光谱实验发现 ,当pH上升到 12 6 ,BR分子上的生色团视黄醛脱落 ,分子完全变性 ;
- The common used method of getting the absorption spectrum is to subtract the background spectrum from the transmission spectrum of the sample. 得到待测样品吸收光谱的通常方法是,将样品的透射光谱和不含样品的背景光谱进行差减计算。
- The rows of air holes decide DBR coming from the mirrors on both sides of the guiding region, which governs the transmission spectrum. 位于导光区两侧的镜带来了分布式布拉格反射,空气孔的排数决定了布拉格反射强度和透射谱。
- A new tetrakis( p glycylglycinephenyl)porphin and its rare earth (Yb,Sm) complexes were synthesized.They have been characterized by elemental analysis,UV vis,IR, 1HNMR and laser Raman spectra. 首次合成了一种新型的四(对甘氨酰甘氨酸)苯基卟吩及其稀土镱、钐的配合物。用元素分析、红外光谱、紫外可见光谱、核磁共振和激光拉曼光谱等方法进行了表征。
- Some well-known methods for optical constants measuring include ellipsometer method, transmission spectrum method and so on. 目前,测量薄膜光学特性的方法有偏振测量法、透射光谱分析法等。
- The results demonstrated that with the increase of molecular torsion, the LUMO-HOMO gap increased and transmission spectrum decreased. 结果表明,随着分子扭转角的增加,分子的LUMO-HOMO能隙增加,透射峰显著降低;
- A method to analyze the resonant wavelength and damping decrement of the transmission spectrum of long period fiber grating (LPFG) with bending curvature was reported. 报道了一种分析长周期光纤光栅(LPFG)透射谱谐振波长和衰减率随弯曲曲率变化的方法。
- For a given period of transmission spectrum of a biconical fiber, the required number of oscillations is decreased when the fusion temperature is increased. 为获得一定的透过谱周期,所需的振荡次数随熔烧温度的升高而减小。
- The transmission spectrum and the absorption spectrum of alcohol shows that the characteristic absorption peak shifts with alcoholicity due to the molecular configuration. 通过对酒精透射光谱和吸收光谱的研究发现,其特征吸收峰随浓度不同发生漂移,从分子结构能级角度对其做了定性解释;
- Determination of Enthalpy Change of Coordinating Color Reaction by UV Vis Absorption Spectrum Method 紫外-可见吸收光谱法测定配合显色反应的焓变