查询词典 lethal dose

Methods Mice were treated with three different doses of extract of ginger:high dose (9.3 mL·kg-1), middle dose (4.7 mL·kg-1),and low dose (2.3 mL·kg-1). All mice were irradiated once with 2.0 Gy X-ray. At the same time, the negative group (treated with vegetable oil only) and positive one (irradiated as well as extract of ginger groups after treated with vegetable oil) were set up. The changes of activities of enzymes in testes of mice were observed.

分别以高剂量（9.3 mL·kg-1）、中剂量（4.7 mL·kg-1）和低剂量（2.3 mL·kg-1）的生姜提取物给小鼠灌胃，以剂量为2.0 Gy的X射线一次性全身照射，24 h后观察不同组小鼠睾丸酶活性的变化，同时设阴性对照组和阳性对照组（给予植物油后与生姜提取物各实验组同时照射）。

The key for dose output of LINAC to assure the nicety and cure effect is stabilization and veracity of dose inspect,so it is more important to test the dose output linearity.

剂量监测系统的稳定性和准确性是保证加速器输出剂量的准确度和治疗效果的关键，对剂量监测系统示值线性这一重要指标的检测是十分必要的。

In the chapter 4, the HPLC analyses of Uridine and Thymidine implanted by ions with high energy are done. The result shows that the dose effect curves of ions with high energy are almost the same to the dose effect curve of ions with low energy. At the beginning, the damage of implanted ions to the sample is large, with the dose increasing, the damage drops sharply.

第四章对高能离子辐照尿苷和胸苷做了HPLC分析，结果表明高能离子辐照胸苷和尿苷样品的剂量效应曲线和低能离子基本相同，都是在注入初始阶段对样品的损伤比较大，随着剂量的增大，损伤迅速减小。

The oil was applied to the wounded area twice a day for high-dose pulp oil group and high-dose seed oil group, and it was applied once a day for the low-dose groups. For the negative control group, sterilized injection water was applied once a day, and Solcoseryl-Jelly ointment was applied once a day for the positive control group.

沙棘果油及籽油高剂量组，每天在损伤部位涂药两次，而其低剂量组每天涂药一次，阴性对照组每天涂灭菌的注射用水一次，阳性对照组每天涂Solcoseryl-Jelly软膏一次。

Materials and Methods : The measurements included:(1)measurements of buildup dose in phantom by plane-parallel ionization chamber;(2) measurements of buildup dose in phantom by thermoluminescence dosimeters;(3) measurements of surface dose on head and neck Rando phantom by using thermoluminescence dosimeters.

材料与方法：本实验主要包括三个部份：(1)平行板游离腔於假体中增建区剂量测量；(2)热发光剂量计於假体中增建区剂量测量；(3)热发光剂量计应用於擬人形假体头颈部表面剂量之测量。

Materials and Methods : The measurements included:(1)measurements of buildup dose in phantom by plane-parallel ionization chamber;(2) measurements of buildup dose in phantom by thermoluminescence dosimeters;(3) measurements of surface dose on head and neck Rando phantom by using thermoluminescence dosimeters.

材料与方法：本实验主要包括三个部份：(1)平行板游离腔於假体中增建区剂量测量；(2)热发光剂量计於假体中增建区剂量测量；(3)热发光剂量计应用於拟人形假体头颈部表面剂量之测量。

Results The mean dose to 90% of the cochlea was reduced from 39% of the prescribed posterior fossa boost dose to 1.6%,and the 90% mandibular joint volume was 26.1% and 0.4% for the Xrays and proton respectively.Mean dose to the 50% heart volume was reduced from 63.3% to 0.8%,and 90% thyroid volume was 72.2% and 0.5% for the Xray and proton respectively.

结果 X线与质子适形放射治疗计划相比，右侧耳蜗90%的体积平均受照剂量分别为后颅窝加量野的39%和1.6%，右颞颌关节90%体积平均受量分别为26.1%和0.4%， 50%心脏平均受照剂量分别为脊髓野处方剂量的63.3%和0.8%，90%甲状腺平均受量分别为72.2%和0.5%。

The lethal dose of a barbiturate is far less if alcohol is also ingested.

饮酒者的苯巴比妥致死量更小。

Serious convulsion is usually followed by cardiotoxicity induced by local anesthetics. The ratio of medial lethal dose (CD50) and median convulsant doses (LD50) is usually used to assess the comparative safety of local anesthetics.

中枢神经系统明显的神经毒性作用往往是心脏毒性产生的先兆，半数致死剂量和半数致惊厥剂量的比值能够反应局麻药的安全性。

Physiological Responses of Hybrid Striped Bass to Aqueous Copper copper is an abundant trace metal, and although essential at low levels, it is also potentially toxic to aquatic organisms.Mechanisms of toxicity and consequences of exposure vary depending on ionoregulatory status(acclimated to freshwater or salt water).The goal of this research was to examine the responses of hybrid striped bass(Morone chrysopsXMorone saxatilis)exposed to Cu in freshwater and 15g/L salt water.In freshwater,a general dose-and time-dependent pattern of increasing Cu accumulation in gill tissue was evident in fish exposed to aqueous Cu(220 and 447 mg/L)for up to 96 hours.The 96-horu acute median lethal concentration for freshwater-acclimated hybrid striped bass exposed to Cu was 94mg/L(confidence interval=62 to 144mg/L).

生理反应到水的混合条纹鲈鱼铜是一个丰富的微量金属，虽然至关重要，它是在较低的水平也可能对水生生物有毒毒性机制及其后果的曝光取决于ionoregulatory状态，本研究的主要目的是为了检查的反应chrysopsXMorone混合条纹鲈鱼暴露于铜在淡水和15 / L盐水在淡水，一般dose-and时变模式日益增长的铜积累鱼鳃组织显然暴露于含水的铜(220和447毫克/升)长达96小时96-horu致命的平均浓度为freshwater-acclimated急性混合条纹鲈鱼暴露于铜被94mg / L(=置信区间来144mg / L)62 osmolatity、钠浓度降低。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

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