查询词典 dioxide

On the basis of HPLC analytical results, a reaction mechanism between chlorine dioxide and phenol had been proposed. The rate control step in the process of reaction was studied by using ab initio method. Opmital geometry of every species in reaction was caculated by the available gratient optimum software. The result of harmonic vibrational frequencies indicated that phenolate radical was a stable intermediale product.

根据对ClO〓氧化苯酚后的高压液相色谱图，提出了ClO〓与苯酚氧化反应的机理，并对反应机理中的速度控制步骤进行量子化学理论剖析，利用梯度优化软件计算了参加反应物种的平衡几何构型，振动频率分析的结果表明：酚氧自由基是稳定的反应中间体，利用ab initio计算软件计算了参加反应物种的总能量，酚盐负离子中的氧原子电荷密度，布居数和前线轨道。

Rate constants of carbon dioxide radical anion〓 reacting with 5,5dimethyl-1-pyrroline-N-oxide、1-naphthoquinone and N,N,N,N-tetramethyl 1,4 -phenylene diamine were determined by detecting the changes of radical concentrations with time, and they were 5.5×10〓mol〓Ls〓、4.5×10〓mol〓Ls〓 and 6.7×10〓nol〓Ls〓 respectively.

测定了在含〓的CdS胶体体系中〓与5，5-二甲基-1-吡咯氮氧化物、1-萘醌和N，N，N，N-四甲基对苯二胺正离子自由基反应的速率常数，它们分别为5.5×10〓mol〓Ls〓、4.5×l0〓mol〓Ls〓和6.7×10〓mol〓Ls〓。

The supercritical carbon dioxide extraction experiment researches with a liquid model material of the concentration of thick soybeans phosphatide are introduced synthetically.

摘 要：本文以浓缩大豆粗磷脂作为液态物料的模型材料进行了超临界CO2萃取实验研究。

The titanium dioxide was fixed, and the size effect of the photocatalyst was retained as much as possible.

联系制膜条件和膜的表性，研究了TiO2薄膜的光催化活性。

The silicon dioxide matrix could delay the photodecomposition process of the organic complexes.

考察了部分稀土有机配合物二氧化硅复合材料的耐紫外辐射性能。

The complete release of carbon dioxide is important, since gas bubbles will interfere with the photometric measurement.

完全脱除二氧化碳非常重要，因为气泡会干扰光度计的测定。

They are characterized by high carbon dioxide compensation points owing to PHOTORESPIRATION.

它们光呼吸很明显因而具有较高的二氧化碳补偿点。

Carbon dioxide production during photorespiration may be up to five times greater than in dark respiration.

光呼吸产生的CO2量可能是暗呼吸中的五倍还多，光呼吸在过氧化物体而不是在线粒体中进行，并且不与氧化磷酸化藕联。

The relative concentrations of oxygen and carbon dioxide in the surrounding air determine the balance of photosynthesis and photorespiration and thus the efficiency of carbon fixation .

环境中氧气和二氧化碳的相对含量决定了光合合成和光呼吸的反应平衡和二氧化碳固定的效率。

Phytosterol is a kind of substance of physiological activity, which is directly extracted from plant through supercritical carbon dioxide extraction technology. Therefore, it does not contain any unidentified compositions such as organic solvents and metal ions, etc. It can be widely used in the industries of medicine, food and feed etc.

植物甾醇是一类具有生理活性的物质，采用超临界二氧化碳萃取技术直接由植物中提取而得，所以不含任何有机溶剂及金属离子等不明成分，能广泛应用于医药，食品，饲料等行业。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。