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- Determination of oxidation rate constant of antioxidant L-ascorbic acid in aqueous solution 抗氧剂L-抗坏血酸在水溶液中氧化反应速率常数的测定
- Keywords Reaction rate constant;Sodium formaldehyde sulfoxylate;Antioxidant;Oxidation rate constant; 甲醛合次硫酸氢钠;抗氧剂;氧化反应速率;氧化反应速率常数;
- Keywords drug stability;oxygen;oxidation rate constant;antioxidant;sodium sulfite;sodium bisulfite;sodium pyrosulfite; 药物稳定性;氧;氧化反应速率常数;抗氧剂;亚硫酸钠;亚硫酸氢钠;焦亚硫酸钠;
- Oxidation rate constant 氧化反应速率常数
- The parabolic rate constant B is substantially larger for wet oxidation than for dry. 在湿氧氧化中抛物线速率常数B比干氧氧化中的大得多。
- Determination of Oxidation Rate Constants of Antioxidants Sodium Sulfite, Sodium Bisulfite and Sodium Pyrosulfite 抗氧剂亚硫酸钠、亚硫酸氢钠及焦亚硫酸钠氧化反应速率常数的测定
- The absorption rate constant expresses the speed of absorption. 吸收速率常数表示吸收的速度。
- The maximal gelation rate constant occurred the top layer. 在凝胶过程中,凝胶速度常数最大的是皮层。
- The apparent electron transfer coefficient and standard rate constant were calculated to be 0.51 and 1.33 s-1,respectively,for the oxidation of EP in pH 2.5 phosphate buffer solution(PBS). 在pH 2.;5的磷酸盐缓冲溶液(PBS)中;肾上腺素的电子传递系数为0
- The apparent reaction rate constant can be obtained by linear regression. 线性回归得出化学反应速率常数表观值。
- The oxidation rates are fastest in freshly cleaned silica vessels. 在新清洗的二氧化硅容器中,氧化速度是最快的。
- H-acid in aqueous solution can be degraded more than 72.5% after 3-hour solar irradiation. The rate of photocatalytic oxidation can be expressed by Langmuir-Hinshelwood Equation. The apparent rate constant K is 0.070 4 min-1. 太阳光照射3 h;H酸脱色率达到72.;5%25;反应速率遵从Langmuir-Hinshelwood方程;表观速率常数K′=0
- In this case an anomalously high oxidation rate is observed with respect to the model. 在这种情况下发现有比这模型要高得多的氧化速率。
- METHODS: Tyrosinase activity was estimated by measuring the oxidation rate of L DOPA. 方法 :酪氨酸酶多巴速率氧化法体外测定药物干预前后酪氨酸酶活性 ,求出酪氨酸酶抑制率。
- When temperature is above 700, the oxidation rate is increased very fast, but it is still 9% of that in air. 在温度高于700℃以后,电极的氧化速率开始升高,但也仅为在空气中的9%25左右。
- The variation of the return rate constant k with different absolute temperature T deviates Arrhenius empiric equation. 反应速率常数随绝对温度的变化基本上符合阿累尼乌斯定理。
- The oxidation rate is quick with the hoist of the temperature and the weight loss increased with the time pronging at certain temperature. 气种试样的氧化失重对比实验表明,无涂层的石墨阳极试样氧化失重严重,随着温度的升高,氧化速度加快,在确定温度下随着时间的延长,氧化损失不断增加。
- Its reaction constant K, rate constant k_1, activation energy E_(a.1) and Arrhenius factor k_(0.1) were determined. 测定了其反应常数K、速度常数k_1、活化能E_((?) ,1)及频率因子k_(0,1)。
- At the choosed conditions, oxidation rate of pyrite and arsenopyrite is 71.0% and 92.4% and decompound rate of nickel sulphide can reach to 88.8%. 在选定的工艺条件下;细菌对载金矿物黄铁矿、毒砂的分解率分别达到71.;0%25和92
- This is very significant to both determining the rate constant and estimating the activation energy. 这对于求反应速率常数和估计反应的活化能都具有重要意义。