分光的

After a cross-identification between the photometric data obtained from the BATC and SDSS, a catalog containing 1553 galaxies down to r'=20.0 mag is achieved, which includes 121 spectroscopically confirmed member galaxies.

通过BATC和SDSS星表的交叉证认，得到了一个极限星等r'=20.0mag，包含1553个星系的星表，其中有121个通过分光红移证认的成员星系。

N-substituded thioacridones with five different structures were synthesized via a route involving Ull-man reaction, cyclization, N-alkylation and sulfurization. The structures of each thioacridone were identified with IR and MS. The results from UV-spectrophotometry show that the five N-alkythioacridones all have stronger absorption in the visible light region.

采用乌尔曼反应、酸催化环化、N-烷基化和硫代化四步反应路线合成了5种不同结构的N-取代硫代吖啶酮，利用IR和MS分析手段表征了其结构，UV分光光度计的测定结果表明5种硫代吖啶酮在可见光区都有较强的吸收。

To extract and determine the volume of polysaccharides from swertia mussotii franch ,the optimal condition is determined by the orthayonal experiment,and volume of polysaccharides is measured by spectrophotometry.

对川西獐牙菜中多糖进行提取及含量测定；通过正交实验确定提取多糖的优化条件，用分光光度法测定多糖的含量；川西獐牙菜多糖提取的最佳条件是：料液比为1：10、提取时间为2.0h、提取次数为4次、温度90℃。

At the same time the general activity of SOD and the content of MDA and TChE in mice brain's tissue was measured with UV.

同时，利用紫外分光光度法，测定脑组织内总超氧化物歧化酶的活力、丙二醛的含量、乙酰胆碱酯酶的含量。

The stability of nano-alumina aqueous dispersion is tokened by spectrophotometer and particle size distribution instrument. It is proved that when condition is dispersant PMAA =0.4%, pH =9, nano-γ-alumina content = 4%,ultrasonic for twenty minites, excellent stable nano-alumina aqueous dispersion can be acquired.

用分光光度计和粒度分析仪表征了纳米粒子水分散液的稳定性，结果表明纳米γ相Al2O3浓度为4%，分散剂为阴离子聚电解质，用量0.4%，PH=9，采用超声波分散20分钟得到最好的分散效果，纳米颗粒的平均粒径为205nm。

Methods:tlc was used by the same rf of the color for the identification,the content of uncaria alkaloid in rhynchophylline was determined by ultraviolet spectrophotometry.

采用tlc通过显色剂的显色比较有相同的rf进行鉴定；采用紫外分光光度法对钩藤总碱中的钩藤碱进行含量测定。

Stems and leaves were determined and compared by al(no3)3 colorimetry and hplc. the method with ultrasonic wave was applied to extract flavonoids from the leaves and stems of urtica dioical l.. with the contents of flavonoids as the index, the best extraction conditions were selected out. results the best extraction conditions were as follows:soaking the raw material with ethanol(80%, v/v)-water solution (1∶30) at 60℃.

方法分别采用al（no3）3络合分光光度法和hplc法测定异株荨麻茎叶中黄酮类化合物的含量，并对测定结果进行比较；同时以黄酮类化合物的含量为指标，优选出了超声波辅助法提取异株荨麻茎叶中黄酮类化合物的最佳条件。

Extracted DNA by CTAB, in proportion to the additions of PVP and β-mercap toethanol to the extraction buffer were capable of preventing browning from taking place in the extraction, Tris-Phenol (Stabilized with 0.1M Tris, pH 8.0)/Chloroform/isoamyl alcohol were used to remove protein and impurity in the second extraction, during crude DNA used to Isopropanol DNA and deterged by DNA detergent, without using RNase remove RNA, we detected the quality and concentration of DNA respectively for normal leaves and drought stress leaves by Agarose gel electrophoresis of genomic DNA and ultraviolet spectrometry photo.

用20%聚乙二醇(polyethylene glycol，PEG6000)模拟干旱，采取CTAB提取缓冲液，按一定比例加入PVP和β-巯基乙醇，用Tris平衡酚－氯仿－异戊醇除去蛋白质及杂质，在粗提时用异丙醇沉淀DNA，并用DNA洗液（10mmol/L醋酸铵，75%乙醇）洗涤DNA，在纯化时用乙醇沉淀DNA，且没有加入RNase去除RNA的方法，分别提取2个品种正常和干旱胁迫的苹果属叶片总DNA，并对提取的DNA进行琼脂糖凝胶电泳和紫外分光光度计检测。

H-acid is proposed as a self-coupling diazotizing reagent for the determination of nitrite and nitrate.

本文研究了NO_2~-与 H-酸的重氮盐自偶联反应，提出了一个灵敏的分光光度法，用于测定钢件磷化液中的NO_3，结果满意。

Current study compared the effects of the method of the low temperature storage without sterilization and preservatives with the method of sterilization under 80 ℃ for 15 min and then room temperature storage with potassium sobital acid on the gingers' flavor quality, color, nutrient and microorganism etc.

该试验对保存的泡姜进行了感官评价；采用分光光度计法对泡姜中的Vc、蛋白质、可溶性总糖和姜辣素进行检测分析；用高效液相色谱检测有机酸；采用稀释平板法对泡姜中的微生物进行纯化分离。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失