查询词典 O2

With regard to the biological activities of paeonol and sodium paeonol sulfonate, we studied their inhibitory effects on phytopathogen and their activities of scavenging O2-and OH.

实验结果显示，丹皮酚磺酸钠的纯度为99.4804％，化学结构为2-甲氧基-4羟基-5-乙酰基苯磺酸钠。

In this paper the thymus DNA of calf and the pBs plasmid are the main objects of our studies in ultraweak luminescence. By means of PIAS(Photon-counting image acquisition), ultraweak luminescence detector and Lambda Bio 40 of UV/VIS spectrophotometer, we studied the UL of DNA induced by the three oxygen free radicals: singlet oxygen Oa, hydroxy radical and superoxide anion(O2 ). We found that the OH can greatly increase the UL intensity of DNA.

本论文以小牛胸腺DNA和质粒pBs为实验材料，利用光子图像探测系统(Photon-counting image acquistion，PIAS)、微弱发光测量仪和UV／VIS分光光度计和生物统计学的成组比较法原理对单线态氧(~1O_2)、羟自由基、超氧阴离子(O_2~-)三种氧自由基诱导DNA超弱发光的变化过程进行了研究，结果发现这三种氧自由基中·OH能诱导DNA的超弱发光发生显著的增强变化，而其他两种氧自由基对DNA的超弱发光并无显著诱导作用。

Methods Iodine in sea water was determined by F-78 pulse polarograph under conditions of 0.5 mol/L KCl, 2.4×10-4 mol/L EDTA, pH=9.5 and removing O2 by inflation of pure N2 for 20 minutes. Results Recovery rate of sample was 97.7%～105%.

方法采用F-78型脉冲极谱仪于底液KCl浓度为0.5 mol/L ，EDTA为2.4×10-4mol/L，pH为9.5，通纯氮气除氧20 min条件下测定海水的含碘量。

The basic principle of system designing is mass equilibrium, especially oxygen equilibrium and water equilibrium, which are closely connected with the astronauts' life.

系统设计过程应遵循物质平衡的基本原则，尤其是与航天员生命息息相关的O2平衡和水平衡。

C% O2 D Relatives of the victim watched from the public gallery as the murder charge was read out in court.

公众席上的受害者亲属目睹了法庭宣告该谋杀罪成立。

The experimental results demonstrate that the film plated on the electrode can restrain the oxidation and pulverization of the alloy and prolong the cycle life of the battery.

实验结果表明，镀覆在极片表面的Ni膜能够抑制合金的粉化和氧化，提高电池的循环寿命，同时也有助于增强电极复合O2的能力，并抑制充电时H2的产生，从而显著降低了电池在充电时的内压，提高了电池的充电效率。

In the medium of dilute H 2SO 4, the fading reaction of pyrogallol red is oxdized by H 2O 2, which can be catalyzed by Zn 2+ has been studied.

研究了在稀H2 SO4介质中，Zn2 +催化H2 O2 氧化邻苯三酚红的褪色反应。

With the isolated and purified PSP as test materials, the chemical model systems were used to produce and OH. resp. And the scavenging capability of PSP on free radicals, its inhibition effect on pyrogallol autoxidation and the effects of PSP on SOD activity and MDA content in tumor-bearing mice were studied.

方法］以已分离提纯的甘薯多糖为试验材料，利用分别产生氧自由基O2(上标-和羟自由基的化学模型体系，研究甘薯多糖清除舟自由基能力及其对邻苯三酚自氧化的抑制作用和甘薯多糖对荷瘤小鼠SOD活性和丙二醛含量的影响。

The method of phenanthroline-Fe2+reaction system and autoxidation reaction system of pyrogallol and the system of lipid peroxide were used to measure the antioxidation of the water extraction from C.

本文采用邻二氮菲-Fe2+氧化法，邻苯三酚自氧化法以及卵黄脂蛋白不饱和脂肪酸过氧化体系，对甘青铁线莲花水提取物清除超氧阴离子自由基O2-。

A novel power cycle system composed of a chemical recuperative cycle with CO_2/NG reforming and an ammonia absorption refrigeration cycle is proposed.

提出了一种由天然气CO2转化化学回热动力循环和氨吸收制冷循环构成的新型O2/CO2热力循环系统。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！