查询词典 UV

The derivative ratio of UV spectrum is used to analyze a mixture of glyoxal and glyoxalic acid.

用紫外光谱的比值导数法对乙二醛与乙醛酸的二元混合物进行分析，该方法能将乙二醛和乙醛酸重叠光谱分开并消除互相干扰，从而方便的完成两组分混合体系中各组分的测定。

Effects of UV-B radiation on the growth and physiological characteristics of Pl at ymonas gel gol andica .

UV-B 辐射对青岛大扁藻生长及其某些生理特性的影响。

Observation was made on the content of malondialdehyde. Results Compared with MC group, the increases of MDA content in the membrane induced by XanXO system, H2O2 or UV light in all of the three Punica granatum L.group were inhibited dosedependently.

结果 同MC组相比，三组石榴皮提取物对黄嘌呤－黄嘌呤氧化酶系统、H2O2及UV照射3种方法引起的细胞膜脂质过氧化产物丙二醛的生成增加均有抑制作用，且有一定的剂量依赖关系。

Observation was made on the content of malondialdehyde. Results Compared with MC group, the increases of MDA content in the membrane induced by Xan?XO system, H2O2 or UV light in all of the three Punica granatum L.group were inhibited dose?dependently.

结果 同MC组相比，三组石榴皮提取物对黄嘌呤－黄嘌呤氧化酶系统、H2O2及UV照射3种方法引起的细胞膜脂质过氧化产物丙二醛的生成增加均有抑制作用，且有一定的剂量依赖关系。

Thirdly, the interaction between metal, drug and guanylic acid is studied by UV and fluorescence spectra.

其中的原始配体CPFX在合成反应中均发生了改变，主要变化在7位取代基。

First, gummed speed of UV printing ink is very fast

UV油墨含有较多量的光引发剂。

Two needle-shaped crystal chemicals were identificated from a plateau plant Halenia elliptica D. Don. Some analysis methods, such as EA, MS, NMR, FTIR and UV spectrometly, as well as melting point analysis, were used for the characterization of them, results showed that they were 1,3-dihydroxy-4,5,8-trimethoxyxanthone and 1-hydroxy-2,3,4,8-tetramethoxyxanthone.

提取并鉴定高原植物椭圆叶花锚的全草中2种针状结晶化合物；采用元素分析、核磁共振波谱、质谱、红外光谱、紫外光谱、熔点测定等分析方法，对其化学结构进行表征；产物分别为1，3-二羟基－4，5，8-三甲氧基酮和1-羟基－2，3，4，8-四甲氧基酮。

Hyperbranched polymer; siloxysilane; metallic haloid catalyst; UV curing; kinetics

超支化聚合物；硅氧基硅烷；金属卤化物催化；紫外光固化；动力学

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 charge transfer salts with second order nonlinear optical properties have been synthesized based on hexamethylenamine and the heteropoly acids,H 3PMo 12 O 40 ·nH 2O,H 4SiMo 12 O 40 ·nH 2O and H 4GeMo 12 O 40 ·nH 2O and characterized by elemental analysis,IR spectra and UV spectra.

合成了由六次甲基四胺与H3PMo12O40·nH2O，H4SiMo12O40·nH2O 和H4GeMo12 O40·nH2O 形成的具有二阶非线性光学性质的电荷转移盐，并由元素分析，红外光谱，电子光谱进行了表征。

TNF-α can increase permeability of strial capillary endothelial cells of suinca pig cochlea.

TNF-α能使内皮细胞中的F-actin含量明显减少(P＜0.01)，且TNF-α的浓度越高F-acitn的含量降低越明显；L-Arg能进一步降低F-actin的含量(P＜0.05)；而L-NMMA则能抑制这种趋势(P＜0.05)。

"Large farm for breed ing and raising cattle, sheep, or horses."

用于放养和繁育牛、羊或马的大型农场。