光度

The clarification effects were compared between two agents of glutin and egg white.

利用明胶、蛋清液两种澄清剂对酿造食醋进行初步的澄清实验，并对处理后食醋的吸光光度值、酸度等进行测定，比较其澄清效果。

Glutin and egg white were used as clarification agents to dispose the deposition in brewing vinegar.

利用明胶、蛋清液两种澄清剂对酿造食醋进行初步的澄清实验，并对处理后食醋的吸光光度值、酸度等进行测定，比较其澄清效果。

Under the concentration of SPG is 1.02g/mL, pH = 5.6, glutinosity is 2.95mPa.s, degree of opticity is _D~(25℃)=+46o (C=0.29,H_2O), UV absorption is 280nm.

在浓度为1.02g/mL时，pH=5.6，特征性粘度为2.95mPa.s，比旋光度_D~(25℃)=+46°(C=0.29，H_2O)，紫外吸收峰为280nm。

Ultraviolet spectrophotometry was used to determine content of selenium in punica granatum with o-diaminobenzene hydrochloride as apparent color agent under 335nm detection wavelength.

采用紫外分光光度法，以邻苯二胺盐酸盐做显色剂，检测波长为335 nm，测定石榴皮中微量硒元素的含量。

He sample is dissolved in a mixture of nitric acid and potassium chlorate.The determinations of Te,Bi,Fe and Cu are performed on a flame atomic absorption spectrophotometer.The selenium is determined photormetrically with 3,3'-diaminobenzidine,and the sulfur is determined gravimetrically as barium sulfate,precipitated frorm an EDTA-citric acid medium.

辉碲铋矿物经HNO＿3－KCIO＿3溶解，用火焰原子吸收法或乙二胺四乙酸二钠络合滴定法测定Bi，火焰原子吸收法测定Te、Fe、Cu，3，3＇二氨基联苯胺光度法测定Se，硫酸钡重量法测定S。

The method is based on the catalyzing effect of manganeseon oxidation of arsenazoⅢby potassium periodate in HAc-NaAc medium and in the presence of Tween-80 as an en- hanced agent and 1,10-phenanthroline as an activator.

研究了以表面活性剂吐温-80为增敏剂，在HAc-NaAc介质中1，10-邻菲罗啉存在下，痕量锰催化高碘酸钾氧化偶氮胂Ⅲ的催化动力学光度法。

The results showed that (1) The grain size of nanometer YiO_2 was40～80nm.The wavelength corresponding to the maximum absorbency values were observedin the 200～320nm range.The crystal structure of carbon doped TiO_2 photocatalyst is primarilyanatase(22.43% rutile), and the content of carbon is about 4.6%.(2) The relative humidityvaring from 8% to 80%, the photocatalytic degradation degree of benzene increased withincreasing relative humidity; and to toluene, degradation rate was hanced by relative humidityup to 60%, and more or less inhibited above 60%.(3) Scheme and results of orthogonal testswere used by evaluating the photocatalytic performance of the gas phase methanol, acetoneand 1-heptane.The results revealed that their degradation degree reached 84.5%, 93.39% and93.45%, respectively.(4) The 254nm UV lamp showed higher photocatalytic degradation rate.For methanol, acetone and 1-heptane, it was found that photocatalytic degradation reactionoccurs with the light strength of daylight lamp.(5) Under the the same conditions, 15%degradation degree has been obtained for benzene, whilst about 10% degradation degree wasattained by Degussa P25; During the initial phases, the toluene revealed higher photocatalyticactivity, comparing with Degussa P25, the degradation degree of methanol, acetone and1-heptane were slightly lower.

结果表明：(1)CVD法制备的纳米TiO_2光催化剂，颗粒球形度好、粒径在40～80nm之间；最大吸光度值所对应的波长为200～320nm；含碳量约为4.6％；晶型组成主要为锐钛矿型，金红石的含量约为22.43％；(2)在相对湿度为8％～80％范围内，苯的光催化降解率随着相对湿度的增大而增大；甲苯在相对湿度为60％时达到最好降解效果，当相对湿度增大到80％时光催化效果降低；(3)将正交实验设计及实验方案应用于气相甲醇、丙酮和正庚烷光催化降解研究，实验结果表明：三者最高降解率分别为84.5％、93.39％和93.45％；(4)有254nm紫外灯参与的光催化实验可以大大提高有机气体的光催化降解率；在日光灯的照射下，掺碳纳米TiO_2对气相甲醇、丙酮和正庚烷具有一定的光催化氧化能力；(5)较P25粉，在相同的光催化操作条件下：气相苯的平均降解率达15％，高于P25粉10％的降解率；气相甲苯在初始阶段具有较高的反应速率；气相甲醇、丙酮和正庚烷的降解率略低于P25粉。

Methods The macular pigment optical density was measured in the right eye of 116 adult subjects with heterochromatic flicker photometry.

采用异色闪烁光度仪对116例正常成年人右眼进行黄斑色素密度测量。

METHODS: The authors measured MPOD with heterochromatic flicker photometry, serum lutein and serum zeaxanthin by high performance liquid chromatography, and central foveal retinal thickness by optical coherence tomography in 176 patients (age range, 18-68 years) with typical forms of retinitis pigmentosa; 37 (21%) of these patients had cystoid macular edema by OCT.

作者对176例（年龄范围18-68岁）典型视网膜色素变性患者进行以下测量：采用异色闪烁光度法测量黄斑色素光密度，高效液相色谱法测量血清脂色素和血清玉米黄质，和光学相干断层扫描法测量中心凹中央视网膜厚度；其中37例（21％）患者OCT检查有黄斑囊样水肿。

In 0.015 mol/L NaOH medium, AuCl4(superscript -)reacted with hexadecyl trimethyl ammonium bromide, forming water soluble CTMAB-AuCl4 complex that exhibited a weak absorption peak at 400 nm. In the presence of hydrazine, the reaction produced orange-red nanogold particle and exhibited a surface plasma resonance absorption peak at 520 nm.

在0.015mol/LNaOH介质中，氯金酸根离子AuCl(上标-下标 4与阳离子表面活性剂十六烷基三甲基溴化铵反应生成水溶性的CTMAB-AuCl4缔合物，在400nm处产生一个很弱的吸收峰，当有肼存在时，反应生成橙红色的金纳米粒子，在520nm处出现一个表面等离子体共振吸收峰，从而可实现废水中微量肼的分光光度测定。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。