吸光率

The company imports modern and advanced production process ,stricyly in line with ISO9001-2000 international Quality System; it produces professionally natural stones of all kinds and its main product series as Magic Fairy Stone ,Poly Crystal Fairy Stone ,Dreamy Crystalline Stone ,Butterfly Fairy Stone are quite with modern and vogue designing theory as well as characteristics as green and Environmental-production,low water absorption ,strong antiwearing,tiny radiation,gentle vein, complete dimension,whice are quite popular and get appraisal from mass customers.

公司引进现代先进的生产工艺，严格按照ISO9001：2000国际质量体系严格管理，专业生产各种系列抛光砖，以魔幻仙子、晶亮仙子、星辉映像、翠玉仙子、彩蝶仙子、碧玉仙子等多个系列石为主导产品，产品具现代时尚的设计理念、绿色环保、吸水率低、耐磨性能强、无辐射、纹理柔和、规格齐全等特点，均受到广大客户的信赖和赞誉。

The goals of our work are to study the way of TiN coating on the chamber surface, especially on the inner surface of slightness pipe vacuum chamber, to get the surface with the characters of low surface thermal outgassing rate, low photon stimulated desorption and resistance to multi-electron impact, and to achieve experiment data and theory analysis as the basement of the fabrication of future particle accelerator EHV system.

本课题目的是实验研究采用材料表面溅射沉积TiN膜表面处理方法，获得材料极低表面热放气率、抗多次电子撞击和较低的辐射光致解吸，特别是细长管道真空室表面处理，为新一代粒子储存环极高真空系统建造提供实验数据和理论依据。

The influence of acidity and concentration on fluorescence and absorption spectra were investigated. Using quinine bisulphate as a reference, fluorescence quantum yield of aesculetin in the condition of pH=9.32 was determined to be 0.13 at excitation wavelength 365nm.

考察了酸度与浓度对其荧光性质和吸光性质的影响，以硫酸奎宁为参比，测得秦皮乙素水溶液在pH=9.32，激发波长365nm条件下的荧光量子产率为0.13。

The influence of acidity on fluorescence and absorption spectra were investigated. Using quinine bisulphate as a reference, fluorescence quantum yield of aesculin in the condition of pH=4.96 was determined to be 0.76 at excitation wavelength 335nm, and in pH=9.40 was 0.80 at 375nm.

探讨了酸度与浓度对其荧光和吸光性质的影响，以硫酸奎宁为参比，测得秦皮甲素水溶液的两种强荧光型体的荧光量子产率，在pH=4.96，激发波长335nm条件下，荧光量子产率为0.76；在pH=9.40，激发波长375nm条件下，荧光量子产率为0.80。

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。

The wavelength of the instrument used to measure the change in absorbance of dosimeters and the instrument used to measure their thickness should be subject to regular checks of calibration at intervals established on the basis of stability, purpose and usage.

用来测量辐射量测定器吸光率改变的仪器的波长和用来测量它们厚度的仪器应定期进行校验，按照根据稳定性，目的和用途为基础建立的时间间隔进行。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。