查询词典 oxidation-reduction potential

The adrenochrome can also take part in oxidation-reduction reaction when the potential is about zero volt, consequently, there is another pair of oxidation-reduction peaks correspondingly in the cyclic voltammogram. The deproton step of the protonated adrenalinequinone, viz.

在强酸性溶液中，由于质子化的肾上腺素醌脱质子步骤即第三步难以进行，故不发生一系列后继化学反应，电解产物停止在肾上腺素醌，从而在循环伏安图上只有一对氧化还原峰。

In the paper following the change law of concentration and electric potential of different stage oxidation-reduction titration and appling the Nernst formula, it was discussed that the application of Ringbom error formula in symmetry donblet oxidation-reduction titration.

本文遵循氧化还原滴定各个阶段的浓度与电位变化规律，运用能斯特公式，探讨了能适用于氧化还原滴定中对称电对的林邦误差公式，具有便于记忆与应用等特点。

In the one half part, according to the strontium nature, thermodynamic calculation of correlative reaction and the principle of the vacuum aluminothermy reduction process, with the laboratory findings of preparation strontium by vacuum aluminothermy reduction compared and analyzed in different parameter conditions, a variety of factors which effect the decomposition rate of SrCO_3 and the percent reduction of strontia are gotten out. The factors include that the decomposition rate of SrCO_3 is influenced by different addition and pressure. They also include that the percent reduction of strontia is influenced by excess coefficient of reducing agent aluminium powder, the particle size of raw material or reducing agent, the pressure of barbecuing, temperature and reduction time. According to those, we can draw the conclusion as follows:(1) Decomposition temperature of SrCO_3 is decreased by adding carbon and alumina in different degree.(2) With quantitative carbon added under the vacuum condition, the decomposition temperature of SrCO_3 is decreased obviously, which can fall 150℃ compared with atmospheric pressure.(3) In keeping 1150℃ of 2.5h, under the 5Pa vacuum condition, the decomposition rate of SrCO_3 nearly keeps in 99% steadily.

在前半部分的真空铝热还原法中，根据锶的性质、相关反应的热力学计算及真空铝热还原法原理，通过对不同参数条件下的真空铝热还原法生产金属锶的实验结果的分析比较，得出了影响SrCO_3的分解率和氧化锶的还原率的种种因素，具体因素包括不同添加剂、不同气压对SrCO_3分解率的影响，还原剂铝粉的过量系数、原料与还原剂的粒度、制团压力、温度和还原时间等对氧化锶还原率的影响，得出具体结论如下：(1)添加碳和Al_2O_3能不同程度的降低SrCO_3的分解温度；(2)真空条件下加入一定量的碳可显著降低SrCO_3的分解温度，比之常压下可降低150℃之多；(3)在1150℃恒温2.5h、真空度达到5Pa的条件下，SrCO_3的分解率几乎保持稳定在99％；(4)氧化锶的还原率随还原剂过量系数的增大而增大，但是趋势越来越小，当过量系数超过25％后，氧化锶的还原率几乎不再增加；(5)氧化锶的还原率随原料与还原剂的粒度的变细而增加；(6)氧化锶的还原率随制团压力的增加而增加，但超过一定值后，氧化锶的还原率反而会下降；(7)氧化锶的还原率随还原温度的升高而增加；(8)氧化锶的还原率随还原时间延长而增加，在本实验条件下，超过2.5h趋于稳定。

A new concept of turning line of reduction parameters and its determination method is put forward in this paper for analyzing the isopleth diagram showing the relationship between reduction degree and reduction parameters in reduction of compressed scale lump containing carbon, and the method of optimal selection for reduction parameters is obtaine

应用文章提出的还原参数界线概念及其确定方法对铁鳞配焦压块还原过程中反映还原参数与还原指标关系的等高线图进行分析，得出还原参数优化选择的具体方法。

The results show that Fe0.13[Co20Ni80]0.87 alloy fibers are characterized with thin diameters between 0.3 and 2.0 μm, with high aspect ratio, dense and smooth surfaces. The crystalline size of the alloy fibers are mainly influenced by the thermal reduction temperature and are in the range of 20 to 50 nm with a corresponding reduction temperature range of 300 to 700 ℃. The magnetic properties of the alloy fibers are largely affected by the carbon content and crystalline sizes of the alloy fibers. With increasing thermal reduction temperature, the coercivity decreases while the saturation magnetisation value of the alloy fibers dramatically increases at lower reduction temperatures. The alloy fibers prepared at reduction temperature of 700 ℃ have a saturation magnetisation value of 120 Am2/kg and a coercivity value of 10.4 kA/m, respectively.

结果表明：Fe0.13[Co20Ni80]0.87合金纤维的直径为0.3~2.0 μm，表面光滑、长径比大；组成合金纤维的晶粒大小与还原温度密切相关，当温度为300~700 ℃时，晶粒尺寸由约20 nm增加到约50 nm；该合金纤维显铁磁性，其矫顽力主要受合金中C含量及晶粒大小的影响，随制备温度的升高而降低；饱和磁化强度则主要与合金的组分相关，随还原温度的升高和合金纯度的提高而增大；经700 ℃热还原后，合金纤维的饱和磁化强度 m s为120 Am2/kg，矫顽力 H c为10.4 kA/m。

Compared to open surgery, patients in the study who underwent laparoscopic surgery experienced 80 percent reduction in the odds of respiratory tract infection, 69 percent reduction in bloodstream infection, 59 percent reduction in wound infection, 39 percent reduction in urinary tract infection and a 48 percent reduction in other types of nosocomial infections across hysterectomies, cholecystectomies and appendectomies.

同开放性手术相比，研究中行腹腔镜外科手术子宫切除术、胆囊切除术及阑尾切除术的病人呼吸道感染可能性降低80%，血流感染降低69%，伤口感染降低59%，泌尿道感染降低39%，其他院内感染降低48

Some reduction methods in titanium metallurgy ,such as the manganese reduction process,the calcium reduction process,the natrium reduction progress,reduction of titanium by electrolyzing of molten salt,etc were introduced.

未来钛冶金的发展方向是用还原二氧化钛为基础的连续式生产技术代替间歇式的Kroll法生产技术，并大力降低原材料和生产的成本。

For supracondylar fracture of humerus with obvious displacement,it is easy to make reduction,but the fixation and the maintenance of reduction is not easy; manual reduction with plaster or splint immobilization,though as the first-chosen method,has such shortcomings as infirm or loosening fixation of plaster or splint which may cause injury to blood vessels or nerves; open reduction may lead to further trauma to soft tissues and tissue adhesion,and to joint stiffness; the closed reduction with cross Kirschners wires under C-arm X-ray can avoid the above mentioned shortcomings and it is easy in operation.

移位明显的肱骨髁上骨折，复位容易，但固定及维持复位困难，手法复位石膏或夹板外固定虽是首选治疗方法，但石膏或夹板固定不牢固，易出现松动甚至可造成血管及神经损伤，而切开复位更易进一步造成软组织创伤，组织粘连，最终导致关节僵直功能障碍。本组C臂下闭合复位交叉克氏针治疗移位明显的肱骨髁上骨折避免了上述缺点，而且方法简单。肱骨髁上骨折；经皮克氏针固定；儿童；闭合复位

The reduction of trihalomethane formation potential was discussed, which indicated that ozonation has a good removal for chlorofom and bromodichloromethane formation potential, but for dibromochloromethane formation potential the removal efficiency was undesirable and there was almost no removal for bromoform forming potential, Furthermore, when there was enough bromide in water, ozonation would have a promotion effect for bromoform formation potential.

通过研究臭氧对三卤甲烷生成潜能的去除规律发现，臭氧对三氯甲烷和二氯一溴甲烷生成潜能都有很好的去除，对一氯二溴甲烷生成潜能的去除效果较差，对溴仿生成潜能基本没有去除。当水中溴化物含量较高时臭氧对溴仿的生成反而具有促进作用。

In order to prove the importance of three-body interaction, accurate ArH〓 potential surface and accurate ArAr potential surface are added to construct a two-body potential surface. We found that this potential surface is corresponding with a deep potential well and a tight structure, which is far from the real structure of Ar〓H〓. Obviously, this two-body additive potential surface is not suit in this system.

为了证明三体作用在体系中的重要性，我们用精确的ArH〓的势能面与精确的ArAr的势能面构造了一个两体加和的势能面，发现两体加和的势能面表现的是一个深势阱的紧凑结构，与Ar〓H〓的结构相去甚远，因此可以确认，两体加和在此系统中是不适用的。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。