half-lives

英 [hɑːf lɪvz] 美 [hæf lɪvz]

n.  (放射性物质的)半衰期; 半衰期
half-life的复数

柯林斯词典

  1. （放射性物质的）半衰期
    The half-life of a radioactive substance is the amount of time that it takes to lose half its radioactivity.
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    双语例句

    1. Since both these drugs have short half-lives, the liposome coating could potentially make them active for longer periods.
      由于这些药物的半衰期都很短，包覆脂蛋白有潜力让它们的活性保持更长时间。
    2. Application of modified Cp_EA-PLS to QSAR of direct photolysis half-lives of PAHs
      修正CpEA-PLS用于多环芳烃光解半衰期QSAR的研究
    3. α decay energies and half-lives of the nucleus in region of super-heavy nuclei from a macro-microscopic model
      利用宏观-微观模型研究超重核区原子核的α衰变能和衰变寿命
    4. Half-lives are characteristic properties of the various unstable atomic nuclei and the particular way in which they decay. Alpha decay and Beta decay are generally slower processes than gamma decay.
      半衰期是各种不稳定原子核的特性，是它们衰变的特殊方式。α衰变和β衰变一般比γ衰变为慢。
    5. As another important factor in pharmacokinetic studies, the metabolic half-lives of dioxins in the herring gull were further estimated by a fugacity-based bioaccumulation model.
      污染物在生物体内的半衰期是器官分布之外另一个重要的药代动力学参数，利用代谢逸度模型计算了二恶英类物质在银鸥体内的半衰期。
    6. And the time half-lives are1 second roughly, 12 seconds, minutes, hours and days.
      时间，半期的是大约1秒，12秒，分钟小时和天。
    7. Radioactive ion beams with different decay modes and half-lives can be applied in many aspects of bio-medical fields.
      不同衰变方式和半衰期的放射性核束在生物医学领域有不同应用。
    8. Study on Half-lives of α Decay in Region on Super-heavy Nuclei by Viola-Seaborg Formula
      在超重核区应用Viola-Seaborg公式研究α衰变寿命
    9. Research on Decay Energies and Half-lives of Super-heavy Nuclei and the Nucleus of Its Disintegration Chain with a Macroscopic-microscopic Model
      用宏观&微观模型研究超重核~（271）110及其衰变链的α衰变能和衰变寿命
    10. The long half-lives of PCDDs, PCDFs and "dioxin-like" PCBs mean that each daily ingestion has a small or even a negligible effect on overall intake.
      PCDF和“类二恶英”PCB的半衰期很长，意味着每天的摄入对总摄入量的影响很小甚至可忽略不计。
    11. Factors influencing precise measurement of relative peak counting rates are discussed in time-series measurements over a dynamic range of 1000-fold radioactive intensities ( 10 half-lives).
      对放射性强度跨越1000倍动态范围（10个半衰期）的跟踪测量中影响相对峰计数率精确测定的因素进行了讨论。
    12. Prediction of Photolysis Half-lives of PCDFs with E-State Indices
      电性拓扑态指数预测PCDFs的光解半衰期
    13. Prediction of Photolysis Half-Lives of PCDD/ Fs Adsorbed on Spruce Needles Optimized by Genetic Algorithm
      应用遗传算法建立云杉针叶表面PCDD/Fs光解半衰期的预测模型
    14. The half-lives of captan in soil were 1.6~ 1.9 days.
      克菌丹在土壤中的半衰期为1.6~1.9d。
    15. New Formula for Proton Radioactivity Half-lives
      质子放射性寿命的新规律
    16. Status of theoretical studies on superheavy nuclei is simply reviewed. We investigate the influence of nuclear deformation on half-lives of α-decay for long lifetime nuclei beyond~ ( 208) Pb.
      简单回顾了超重核的理论研究现状，讨论了形变对长寿命重核α衰变半衰期的影响。
    17. Theoretical Studies on α-decay Half-lives of Superheavy Nuclei
      超重核α衰变寿命的理论研究
    18. The degradation curves of chlorsulfuron of three treatments when sand samples were spiked with 33 μ g/ g chlorsulfuron also followed parabola equation, and the half-lives of chlorsulfuron were 19.2, 81.6, and 10.8 days, respectively.
      低浓度处理的对照、碳酸氢铵、磷酸二氢钙3组中，绿磺隆降解曲线亦均遵从抛物线扩散方程，半衰期分别为19.2、81.6、10.8d。
    19. The half-lives of liquid laccase at constant temperature and 4 ℃ were 30d and 66d, respectively.
      漆酶不太稳定，在常温和4℃条件下，酶液的半衰期分别为30天和66天。
    20. New Formula for Spontaneous Fission Half-Lives of Heavy Nuclei
      重核自发裂变寿命的新公式
    21. 'Two-step deactivation' model was employed to fit the deactivation kinetics of MIE. Also, the deactivation rate constant and the half-life were obtained. In the presence of trehalose and lactose, the MIE half-lives increased 31-and 23-fold, respectively.
      采用两步失活动力学模型拟合了酶的失活过程，得到了失活速率常数和半衰期，结果加入海藻糖和乳糖之后，MIE的半衰期分别增长了31和23倍。
    22. The average digestion half-lives of pymetrozine were 7.40 d, 14.11 d, 8.67 d in the paddy water and paddy soil and rice plants. Therefore, pymetrozine is a kind of easy digestion pesticide in the paddy water, soil and rice plants.
      吡蚜酮在稻田水、稻田土壤和水稻植株中的平均消解半衰期分别为7.40d，14.11d，8.67d。由此可见，吡蚜酮在稻田水、土壤和水稻植株的属易消解农药。
    23. However, this class of drugs suffers from poor lipophilicity, short half-lives in human plasma and various side effects, etc. It has been reported that their ester prodrugs via the regioselective acylation can effectively overcome the aforementioned problems.
      然而，这类药物存在脂溶性差、在血浆中半衰期短、有各种毒副作用等缺点。研究表明，其经酰化修饰所得的酯类衍生物前药能有效地解决上述问题。
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