光度计

The obtained Dichondra Repens forst polysaccharides were determined by spectrophotometry at wavelength 490nm with phenolsulfuric acid as a color reagent.

多糖经苯酚－硫酸显色后在490hm处用紫外－可见分光光度计进行比色测定。

The results showed:①NOS activity was detected in every area of rabbit brain ,furthermore NOS activity in rabbit cerebellum was higher than diencephalon and brain stem,the lowest activity was found in cerebral cortex.

采用生化检测技术，借助分光光度计和一氧化氮合酶活性测定试剂盒测定了不同年龄家兔各个脑区内NOS活性，对NOS活性在不同年龄家兔脑内衰老变化规律进行了研究。

Preliminary standard reference spectra for the unliganded enzyme and for the spectral changes induced by sodium dithionite and succinate were obtained. The wavelength and intensity of the UV signal observed in agreement with results of ox-reduced state of heme b.

其次我们使用不同还原剂succinate、Na2S2SO3分别处理两种纯度的样品，通过分光光度计检测细胞色素b的氧化还原状态，观测到了不同还原剂影响下的细胞色素b的特征光谱。

Instrumentation IR spectra were measured on a Perkin–Elmer 16 PC FT-IR spectrophotometer.

仪器仪表红外光谱测定的扩增16 电脑红外分光光度计。

From the results obtained in the study, the following conclusions can be made:The methylene blue and spectrophotometer method can capture the free radicals generated successfully. This is an effective way to measuring the free radicals quantitatively in cavitation, moreover it is easy to fulfill.The intensity of cavitation increases with reduction in the cavitation number. But the different mechanism of various enhancive processes (chemical and physical processes) results in different effect by cavitation number.The effect of operating parameters, such as inlet pressure, temperature and time on cavitation indicate that optimum operating conditions exist at the cavitation enhancive effect is maximum.It is important to optimize the structure of hydrodynamic cavitation reactor for achieving a desired effect. A reasonable geometric parameter can promote the enhancive effect for a fixed hydrodynamic condition.Ventilating appropriate gas to cavitating flow can increase cavitational intensity and hence promote the enhancive effect of hydrodynamic cavitation.

研究结果表明：亚甲基蓝分光光度计法，能够成功地捕捉到水力空化产生的羟自由基，是定量检测空化自由基简便易行的有效方法；空化程度随空化数的减小而增强，但对于不同的强化过程，因其强化机理不同，故空化数对强化效应的影响也不同；水力空化系统的压力、温度及时间等操作参数对空化强化效应的影响规律表明：在适宜的操作条件下可产生最佳的空化强化效果；空化发生器结构的优化设计是保证空化强化效应的重要前提，在一定的水力学条件下，合理的结构尺寸可以增强空化作用效果：往水流中适量加入干扰气体能够提高空化强度，增强空化强化效果。

Determination of the equilibrium constant of a coordinated compound.

四、铁离子与磺基水扬酸配合物的组成和标准稳定常数的测定，了解用比色法测定配合物的组成和配离子稳定常数的原理和方法，掌握分光光度计的使用及有关试验数据的处理方法。

Anthocyanidins in Euphorbia pulcherrima were extracted and identified by use of UV-vis spectrophotometry, high performance liquid chromatography and mass spectrometry.

用紫外-可见光分光光度计、高效液相色谱和质谱技术对一品红红色苞片中的花色素提取液进行了初步鉴定。

Based on the results of experiments, we refine the coefficients of Farrell model to make sure its application in the FPD flicker measurement.

在此基础上，我们基于瞬态光度计设计搭建了一套系统，来测量平板显示器的闪烁。

Stealth tip: When you draw a fire arrow, your Light Gem will get very bright. Opponents can see you easily.

秘密行动提示：当你拉开一支火箭，你的光度计会变得非常亮，敌人会很容易的看见你。

After acquiring the ultraviolet absorption spectrum and its first order derivative spectrum distributions of Avermectin B1 by using UV-2401 PC spectrophotometer and spectrum-measuring system,we found that coordinates of the peak A252.2 and the valley A256.8 are not disturbed by the different forms of preparations.

用UV-2401 PC紫外分光光度计及光谱工作站，以1 nm狭缝宽度，2 nm Δλ间隔，在190～400 nm波长范围内快速扫描采集阿维菌素B1紫外吸收光谱，拟合一阶导数光谱发现峰顶A252.2，和峰谷A256.8在波长坐标上的位置不受不同制剂干扰。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。