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- Keywords Monte-Carlo method;dose rate constant;radial dose function;anisotropy function;empiric equation; 蒙特卡罗方法;剂量率常数;径向剂量函数;各向异性函数;经验公式;
- dose rate constant 剂量率常数
- The first step is to determine the unit-time reference dose rate. 第一步要确定单位时间参考剂量率。
- 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。
- A radioactive particle moving in a blood stream causes transient changes of dose rate near its path. 当一个放射性物质在血流中移动时在它的路径附近引起剂量率的瞬间变化。
- 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。
- maximum permissible constant dose rate [医] 最大容许恒量率
- However, since the dose rate is steadily decreasing during the exposure, appropriate allowance for this must be made. 可是,由于在辐照过程中剂量率逐步下降,所以必需进行适当的修正。
- If the dose rate at any time is known by actual measurement, the value at any other time can be estimated. 如果通过实际测量已知任意时刻的剂量率,则可计算出任何其它时刻的数值。
- A method for calculating cosmic radiation dose and dose rate to aircrews in atmosphere is presented in the paper. 本文介绍了一种在大气层中民航飞行高度上宇宙辐射有效剂量率和飞行航程中机组人员所受有效剂量的计算方法。
- 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 simulating results agree with the experimental results at different absorbed dose rate. 理论模拟结果与实际不同剂量率辐射实验结果符合得很好。
- 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。
- Multiple low dose RIT is better than the single large dose RIT,it shows reverse dose rate effect. 分次小剂量RIT疗效优于单次大剂量RIT ; 在一定的剂量范围内 ,小剂量RIT可以起到优于大剂量RIT的抑瘤效果。
- The WMO standard UV index unit is equal to 25mW/m 2 erythemally weighted dose rate. 世界气象组织规定了单位紫外线指数相当于 2 5 m W/m2 红斑加权剂量率。
- 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)。
- A new parameterization method for retrieving surface UVB irradiance and erythemal UVB radiative dose rate is presented. 提出了一个从卫星观测推算地面UVB辐射通量密度和红斑生物紫外辐射剂量的新的参数化方法。
- 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。
- In addition,the effect of dose rate of the firs t irradiation on the induced adaptive response was also studied. 另外也探讨了不同剂量和不同剂 量率的预先照射对应性反应的影响。