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The copper atom is in a planar coordination site of [N_2O_2] and it devites from the mean plane by only 0.80 pm. Byπ-πstacking interactions, a alabastrine structure was obtained.(2)Schiff-base complex [Cu(H_2O)]·H_2O, where H3GS is the 3-carboxyl -salicylidene glycine, was synthesized and characterized by elemental analysis, IR spectra and single-crystal analysis. The crystal belongs to monoclinic system, space group P2(1)/c, a=848.46(3)pm, b=681.54(3)pm, c=1967.16(8)pm,β=95.8210(10)°, Z=4, R_1=0.0279, wR_2=0.0724. The copper atom is in a square-pyramidal field with the base

结果表明该晶系属单斜晶系,空间群P2(1)/c,晶胞参数:a=848.46(3)pm,b=681.54(3)pm,c=1967.16(8)pm,α=90°,β=95.8210(10)°,γ=90°,Z=4,R_1=0.0279,wR_2=0.0724,Cu原子位于轻微变形的四方锥场底心,底面被氮原子、酚氧原子、甘氨酸羧基的一个氧原子和一个水分子氧原子占据,而甘氨酸羧基的另一个氧原子占据相邻分子的锥顶,因而形成一维链状结构;合成了单核双聚配合物Na_2[Cu_2_2]·2H_2O ,铜三核配合物Cu_3_2·5H_2O和铜锌异三核配合物ZnCu_2_2·5H_2O,并用元素分析,IR光谱,电子光谱和磁化率测定对配合物的组

SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究,采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓,以光催化降解溴代甲烷为模型反应,系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响,结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段,深入地讨论了超强酸化对TiO〓的改性机理,阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

The free radical scavenging properties of six Aloe species are to be investigated in some modified chemical system. The antioxidant was purified by silica column and thin layer chromatography and analyzed by HPLC. A fraction was purified from A. brevifolia Mill showed the most effective scavenging activities on 〓 and ·OH (66. 01% and 38. 98% respectively). With the analysis of IR spectrum, UV spectrum and mass spectrum, the structure of FA was identifed as 8-C-D-glucopyranosyl-2- [2-hydroxy] propyl-5-methyl-7-hydroxychromone. Its scavenging activity on free radicals is higher than that of aloe-emodin. Its antioxidant activity may be due to the phenoxyl on glucosyl chromone which can be react with free radicals and form relatively stable free radicals.

本研究利用分别产生超氧阴离子自由基和羟自由基的化学模型体系研究比较了不同品种芦荟提取物的清除活性氧自由基的抗氧化作用,进一步利用硅胶柱结合薄层层析法和反相高压液相色谱法,从短叶芦荟叶子中首次分离了具有较强自由基清除能力(超氧阴离子自由基和羟自由基清除率分别为66.01%和38.98%)的成分FA,利用红外光谱、紫外光谱和质谱等仪器分析结果推断出该活性成分的分子结构为8-C-吡喃葡萄糖-2-[2-羟基]-丙基-5-甲基-7-羟基对氧萘酮,它的自由基清除能力高于芦荟大黄素,是一种天然抗氧化剂。

The enzyme amplified lanthanide luminescent spectrometry of horseradish peroxidase was developed and applied to the analyse of HRP and tuberculosis. The deconvolution curve method was used for synchronous fluorimetric determination of two component systems of highly overlapped spectra, such as phenol and p-dihydroxybenzene, phenol and o-dihydroxybenzene, and tyrosine and tryptophan. A novel mathematical method, combining Gorry's deconvolution method, was presented to remedy data loosing of SavitzkyGolay's deconvolution method and applied to dealing with fluorescent signal.

建立了辣根过氧化物酶的酶联放大镧系发光法,并应用于结核抗体的测定;成功地应用褶合曲线分析法并进行了改进,结合同步荧光光谱法用于苯酚/对苯二酚、苯酚/邻苯二酚和酪氨酸/色氨酸等光谱重叠较严重的双组份体系的同时测定;结合Gorry提出的卷积法,提出一种解决Savitzky-Golay卷积法中两端信息丢失问题的快捷方法。

This research is to find out the effects of light level, visual angle and eccentricity on the spectral sensitivity of human eyes at mesopic region; to validate the possibility of working out the spectral luminous efficacy curves based on visual performance at mesopic light levels; to find the connection between the results of performance-based method and brightness-matching method.

本论文主要研究照明水平、目标大小和目标偏心度等因素对中间视觉状态下视觉功能的光谱响应特性的影响;探讨在视觉功能的基础上获得人眼光谱光视效率的可能性以及基于视觉功能法(Performance-based Method)和传统的视亮度匹配法(Brightness-matching method)之间所存在的联系。

Natively, first set up one laser-induced fluorescence remote sensing system, which has more complete function and is composed of modern detecting ability equipment including time-selected, spectrum fast received and interrelated detecting technology. Applying this system for detecting common monocyclic and polycyclic aromatic hydrocarbons'fluorescence spectrum. Have a preliminary research of classifying and distinguishing of the kinds of oil pollutants.

一、在国内首先建立了功能比较齐备,技术上采用了具有二十世纪九十年代特点的时间选通,光谱并行接收,相关探测等先进探测处理能力的荧光遥感模拟实验系统,利用该实验装置对常见的水面单环、多环、芳香族油污染物的荧光光谱进行了较系统的测试,并进行了分类识别的初步研究。

The thermal stability, Raman spectra, and upconversion luminescence spectra of lead halide-modified Tm~3+/Yb~3+-codoped tellurite glasses have been investigated, and the upconversion luminescence mechanism of Tm~3+/Yb~3+-codoped oxyhalide tellurite glasses were analyzed.

研究了卤化铅调整Tm3+/Yb3+共掺碲酸盐玻璃的热稳定性能、Raman光谱和上转换发光光谱,分析了Tm3+/Yb3+共掺氧卤碲酸盐玻璃的上转换发光机理。结果发现:混合卤化铅调整Tm3+/Yb3+共掺碲酸盐玻璃具有好的热稳定性能、低的声子能量、强的上转换蓝光。这表明混合卤化铅调整Tm3+/Yb3+共掺碲酸盐玻璃是一种上转换蓝光激光器的潜在基质材料

In the study of UV absorbing test, polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) shows better ability to absorb UV and shows wider range of absorbing UVB than control group, octyl salicylate. With respect to octyl salicylate, octyl salicylate can abosorb the highest wavelength up to 306 nm under UVB (wavelength ranges 280 nm ~320 nm), and the ε is 4.03 × 103 ㎝-1M-1. However, the ε of polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) under 306 nm range 4.14 × 103 ~ 11.45 × 103㎝-1M-1. It is reasonable that the compounds in this study can not only absorb the individual wavelength amoung the wavelenght of UVB, but also absorb wider range of wavelength.

在紫外线可见光吸收测试结果显示,相较於对照组水杨酸辛酯在UVB波长(280 ~ 320 nm)范围最大吸收波长为306 nm,其莫耳吸收系数为4.03 × 103 ㎝-1M-1,而多羟基取代之N-色洛冬宁苯甲醯胺衍生物(化合物1 ~ 10)在306 nm的莫耳吸收系数介於4.14 × 103 ~ 11.45 × 103㎝-1M-1,其吸收紫外线的效果皆优於对照组水杨酸辛酯,且其在UVB波长的范围吸收波长的光谱也较宽广,可知每个化合物并非只是对UVB波长范围内的单一波长有吸收度,而是对UVB波长范围具有较宽广的光谱吸收。

However, DPP nanoparticles were found to present multiple emission from pyrene at 385 nm, pyrazoline at 465 nm and an intermolecular pyrazoline-pyrene charge-transfer state at 570 nm, and each of them possesses individual optical channel.

在粒径确定时,用一确定波长激发时,发射光谱中不同发射的最大强度直接决定于对应激发光谱在该波长下的强度。另一方面,超微粒粒径的大小同样影响着三个部分的相对强度。随着粒径的增大,吡唑啉环-芘环之间电荷转移态570 nm的荧光发射逐渐消失。

The paper analyzes the electrical corona phenomena, its effect to high_voltage transmission system and present detecting technology. It puts forward a double spectrums imaging system based on spectrum characteristic of electrical corona. It is all-weather and independent of environment radialization and temperature effect. It responds fast and can work in move .Two light ways image for a scene respectively: one way is UV image ,the other is visible image. Then we use image registration and infusion synthetically to form a complex image .The theory and methods of image infusion is explained.

论文基于电晕放电的光谱特性,针对现有电晕放电检测手段的优缺点,提出了一种全天候、不受环境辐射和温度影响、响应速度快、可进行航拍的双光谱图像检测方法:两个光路分别对同一场景成像,一路是紫外图像,一路是可见光图像,综合利用图像配准与融合技术,形成合成图像,在合成的图像中保留每个传感器所获取的重要信息,图像里既有紫外光源,也有可见光背景图像。

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They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。

Store this product in a sealed, lightproof, dry and cool place.

密封,遮光,置阴凉干燥处。