谱

The experimental conditions were optimized to produce following results: good linearity of sulfamethoxazole, norfloxacin, ciprofloxacin, ofloxacin and tetracycline in the range from 1.00 ng/L to 1 000 ng/L and the limits of quantification 1 ng/L, the good linearity of terramycin and aureomycin in the range from 10.0 ng/L to 2 000 ng/L and the LOQ 10 ng/L, the recoveries of deionized water and surface water from 72.1% to 112%, and the RSD from 0.6% to 9.2%.

摘要〗采用超高效液相色谱-电喷雾二级质谱联用技术同时测定水中7种抗生素，优化了试验条件。磺胺甲恶唑、诺氟沙星、环丙沙星、氧氟沙星、四环素在1.00 ng/L ～1 000 ng/L 范围内线性良好，定量下限为1 ng/L ，土霉素、金霉素在10.0 ng/L ～2 000 ng/L 范围内线性良好，定量下限为10 ng/L ，去离子水和地表水样加标回收率为72.1%～112%， RSD 为0.6%～9.2%。

Modeled with maximum entropy spectrum analysis and prominent period stacking, the historical earthquake activity in Guanting reservoir and its surrounding area is studied. The earthquake risk of the area in the next fifty years is predicted with the prominent periods that we obtained.

利用最大熵谱分析与显著周期叠加建模的方法，首先对官厅水库及邻区的历史地震活动进行最大熵谱分析，然后利用所得到的显著周期进行建模，最后对未来50年内官厅水库及邻区的地震危险性进行了分析和预测。

Under the model of local thermodynamic equilibrium, the electronic temperature of Cu plasma are deduced to be in the 104 scale by the relative line intensities.

在局部热力学平衡条件近似下，根据谱线的相对强度，得到了等离子体电子温度约在 104K以上，给出了靶面附近电子温度和谱线半高全宽的空间演化规律。

Additionally, absorption bands of the two methyl substituents at different positions of the thiophene are clearly distinguished.

另外，在一维红外谱图中无法分辨的不同取代位置的甲基，在二维相关谱图中，可以清楚地区分开来。

Two different Raman reporter molecules (4,4'-bipyridine and thiophenol), which served as respective labels for each type of antibodies, were selected, SERS has the advantage of a small line width of Raman bands and high sensibility. The presence of dual-analyte was established by distinguishing the corresponding labeled reporter's Raman spectrum.

采用不同标记分子苯硫酚和4，4'-联吡啶(4，4-Bipyridin)分别标记不同的免疫金溶胶，利用表面增强拉曼光谱谱峰较窄且具有较强的分辨率及高灵敏度的特点，通过对两种标记分子特征谱峰的判断识别所加入的两种抗原。

In allusion to the energy-concentrated property of LFM signal in the fractional Fourier domain, the data model of array matrix is constructed by the algorithm and the decorrelation ability is obtained by establishing a new Toeplitz matrix. After performing a spectrum peak research, DOA estimation of coherent wideband LFM signals is obtained.

针对分数阶傅里叶交换的谱峰聚集特点，该算法构造了分数阶傅里叶域的宽带LFM信号的阵列数据模型，在FRF域内利用Toeplitz矩阵重构特性，实现对相干信号的解相干，最后通过谱峰搜索完成入射信号的DOA估计。

Methods: Glipizide gliclazide glyburide glimepiride gliquidone repaglinide nateglinide pioglitazone rosiglitazone metformin phenformin and tolbutamide added in the blank ground samples were extracted with 80% methanol and were separated from an ACQUITY UPLC DBH C18 column with a gradient mobile phase of acetonitrile - 0.2 % formic acid water solution. A tandem quadrupole mass spectrometer equipped with electrospray ionization source was used in positive ion mode multiple reaction monitoring was performed to quantify above mentioned compounds.

被添加在中成药制剂及其包装物中的二甲双胍、苯乙双胍、罗格列酮、吡格列酮、格列吡嗫娶瑞格列奈、甲苯磺丁脲、格列齐特、格列苯脲、那格列奈、格列美脲、格列喹酮等西药成分用80%甲醇提取，以乙腈- 0.2%甲酸水溶液为流动相梯度洗脱，在ACQUITY UPLC DBH C18色谱柱上分离，串联四级杆质谱检测，MRM方式采集并定量。

The following results are made from this research: Assessing data quality and band combination of different bands in line with geo-target features in desertification areas, and determining basic bands for desertification monitoring. And understanding and studying the spectral features and variation rules of geo-targets in the experimental area, raising that it is the basis of geo-targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo-targets, realizing that in a great extent spectral-integrated-form-based classification method can remove the phenomenon of "different spectrum with same objects" resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo-target with similar spectral forms and much different values of whole reflectionratio. It is suggested that "red edge" range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel-based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. The remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed.

研究结果如下：首先针对荒漠化地区的地物特征，对高光谱数据不同波段的数据质量、波段组合进行了评价，提出了适用于荒漠化监测的基本波段选择集；初步了解和掌握了研究地区的地物光谱特性及变异规律，进一步明确了掌握地物光谱特征和变异规律是用成像光谱仪数据提取地物信息的基础；发现了基于光谱整体形状的分类方法在很大程度上能够消除由于传感器、地物目标观测方向之间的角度变化引起的反射率曲线整体平移的"同物异谱"现象，对于谱形相似而整体反射率的值相差较大的两类地物，通过引入均值和方差图像参与分类得到解决；研究还表明在植被"红边"范围内的波段是进行荒漠化监测的主要特征波段，这些波段与植被生物量和盖度都有密切的关系，是开展精细植被分类研究和植被定量反演的重要基础；像元的导数光谱分析可以消除土壤背景的影响，是进行植被生物量和盖度定量反演的有力工具；建立了荒漠化监测主要评价因子的定量反演模型，并分析了模型的适用性。

Experimental spectra and calculated spectra agree well. The absorption maximum at around 520 nm is corresponding to the transverse surface plasmon resonance, while the absorption maximum at longer wavelength is corresponding to the longitudinal surface plasmon resonance.

计算谱和实验谱基本符合，520 nm左右处的吸收峰对应于金纳米棒的横向表面等离体子共振，长波长处的吸收峰对应于金纳米棒的纵向表面等离体子共振。

These custom fonts include Tahoma, Verdana, Georgia, Trebuchet MS , and even Comic Sans MS .

这些自定义的字体包括 Tahoma ，绿色，格鲁吉亚，投石机质谱，甚至漫画无质谱。

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。