搜索结果: 1-15 共查到“UV-VIS”相关记录22条 . 查询时间(0.062 秒)
结合紫外吸收光谱（UV-vis）与三维荧光光谱技术（EEMs），并利用平行因子分析的方法，对两个混合型水库（周村水库和金盆水库）水体中DOM的来源及差异性进行了分析. 结果显示，两个水库水体均存在3个荧光组分，分别为长波类腐殖质（350/460 nm）、可见类富里酸（335/410 nm）和类蛋白（260，285/360 nm）. 但是两水库水体的DOM荧光强度及组分构成比例均存在显著差异（P<0...
A multi-input UV-VIS airborne GASCOD/A4r spectroradiometer for the validation of satellite remote sensing measurements
UV-VIS instruments remote-sensing actinic measurements satellite data validation
2015/9/7
The present paper describes a UV-VIS spectroradiometer named GASCOD/A4r developed at ISAC-CNR for remote sensing measurements aboard stratospheric M55-Geophysica aircraft, flying up to 21 km. Obtained...
Development of Rapid Assessment Method to Determine Bacterial Viability Based on Ultraviolet and Visible (UV-Vis) Spectroscopy Analysis Including Application to Bioaerosols
Bacterial viability Ultraviolet and visible spectroscopy Optical density Bioaerosols
2016/3/25
We evaluated a method for the assessment of bacterial viability that is based on ultraviolet and visible (UV-Vis)
spectroscopy analysis. The quantities of intracellular materials inside a cell vary d...
Synthesis of a novel camphorquinone derivative having acylphosphine oxide group, characterization by UV-VIS spectroscopy and evaluation of photopolymerization performance
Camphorquinone derivative Acylphosphine oxide Photoinitiator
2010/11/26
Camphorquinone (CQ) derivatives having acylphosphine oxide (APO) group are unknown. This study synthesized such a novel 7,7dimethyl-2,3-dioxobicyclo[2.2.1]heptane-1-carbonyldiphenyl phosphine oxide (D...
Ti/SnO2—Sb2O5电极电催化降解苯胺和苯酚溶液的UV-Vis和HPLC研究
苯酚 苯胺 金属氧化物阳极 电催化
2009/10/30
文章用UV-Vis光谱和高效液相色谱(HPLC)研究了苯酚和苯胺溶液在Ti/SnO2—Sb2O5电极上的电氧化降解过程。研究结果表明，对苯二酚、苯醌、马来酸是苯胺和苯酚降解的共同产物，因而苯酚和苯胺可能具有相同的降解途径。由于苯胺发生电聚合反应，导致氧化降解历程的差异。
基于UV-Vis吸收光谱的活性大红BES的光催化降解BPNN模拟研究
活性大红BES 光催化降解 紫外-可见分光光度法
2009/10/29
以对Plackett-Burman设计实验结果筛选确定的TiO2用量、溶液初始浓度ｃ0、光照射时间t、溶液初始pH值4个因素为自变量，脱色率为因变量，采用BP神经网络基于Box-Behnken设计和U10(10×52×2)设计实验数据建模，对活性大红BES溶液进行光催化降解模拟研究。降解过程中BES溶液的脱色率通过紫外-可见分光光度法测定后计算获得。建立的BPNN模型对训练集和预测集计算结果相关系...
四氮杂芳氧基取代酞菁金属配合物的UV-Vis吸收光谱研究
氮杂芳氧基 取代酞菁金属配合物 UV-Vis吸收光谱
2009/10/22
测定了6个系列18种四氮杂芳氧基取代酞菁金属配合物(R4PcM, R=4-吡啶氧基、8-喹啉氧基、2-甲基-8-喹啉氧基;取代位置分别为：α位及β位;M=Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ))的UV-Vis吸收光谱。探讨了中心金属、取代基种类及取代位置、溶剂对酞菁金属配合物UV-Vis吸收光谱中Q带最大吸收波长(λmax)的影响，实验结果表明：标题配合物的Q带λmax在680 nm左右;与相同中...
UV-VIS spectra and photoinitiation behaviors of acylphosphine oxide and bisacylphosphine oxide derivatives in unfilled, light-cured dental resins
UV-VIS spectra Photo-DSC Degree of conversion
2009/9/14
The aims of this study were to investigate the photoinitiation behaviors of acylphosphine oxide (APO) and bisacylphosphine oxide (BAPO) derivatives in comparison to D,L-camphorquinone (CQ)/tertiary am...
用包含有溶剂化效应的含时密度泛函理论(PCM-TDDFT), 选用PBE0和B3LYP 两种杂化函数在6-31+G(d) 基组水平上计算了21种螺吡喃和螺恶嗪的开、闭环的紫外吸收光谱. 通过计算光谱与实验光谱比较发现, B3LYP/6-31+G(d) 和PBE0/6-31+G(d) 能非常好地预测闭环态的最大吸收波长, 其平均绝对偏差(MAE)分别为0.20和0.16 eV, 计算光谱与实验光谱之...
Comparison between Identification of Anthocyanin by HPLC Analysis with a Photodiode Array Detector and that Using TLC Combined with UV-VIS Spectral Analysis
Array Detector Anthocyanin Identification Comparison
2009/7/10
Properties of nine kinds of anthocyanidins and 24 kinds of anthocyanins were compared by thin-layer chromatography (TLC) data and UV-VIS spectrophotometer data with high performance liquid chromatogra...
大环炔基噻吩衍生物的结构和UV-Vis光谱的理论研究
含时密度泛函理论 对称性 紫外可见光谱
2010/3/29
用DFT 和TDDFT方法对大环炔基噻吩衍生物的结构和UV-Vis光谱进行了理论研究. 对分子不同的对称性结构(C1, C5, C5v)进行了优化, 得到了稳定的几何构型.以优化构型为基础计算了分子的UV-Vis光谱, 结果表明, C5,C5v对称性下丁基取代的分子构型(C[3T_DA]5-Bu)都是较稳定的; 当分子构型具有C5对称性时, 得到的光谱数据与实验值符合的较好. 对于大环噻吩C[3T...
环丁烯砜的精制及其UV-Vis和FTIR光谱分析
环丁烯砜 活性炭 离子交换树脂 精制
2009/4/30
利用吸附法，考察了活性炭、 离子交换树脂精制环丁烯砜的方案，利用UV-Vis，FTIR，XRD对其进行分析检测，重点对环丁烯砜、 环丁砜的FTIR谱图进行了解析。活性炭、 离子交换树脂串联去除工业级环丁烯砜杂质的效果最佳。利用精制的环丁烯砜催化加氢，合成出了高纯度的环丁砜，转化率大于99.8%，为工业装置技术改造提供了实验依据。
Balloon-borne limb profiling of UV/vis skylight radiances, O3, NO2, and BrO: technical set-up and validation of the method
Balloon-borne limb profiling UV/vis skylight radiances BrO
2009/2/10
A novel light-weight, elevation scanning and absolutely calibrated UV/vis spectrometer and its application to balloon-borne limb radiance and trace gas profile measurements is described. Its performan...
Evaluation of SHADOZ sondes, HALOE and SAGE II ozone profiles at the tropics from SAOZ UV-Vis remote measurements onboard long duration balloons
SHADOZ sondes HALOE SAGE II ozone profiles SAOZ UV-Vis
2009/2/10
Ozone profiles from 10 to 26km have been obtained at almost constant latitude (20 ± 5° S) in the tropics using SAOZ UV-vis spectrometers flown onboard long duration balloons in 2001 and 2003. The prec...