查询词典 lethal dose

Methods Sixty-five patients with suspected nephrolithiasis and ureterolithiasis were collected. Followed by standard-dose helical CT scans with 2-mm-thick section, 120kv, 160mAs, low-dose scan was carried out with the tube current reduced to 60mAs. All other technical parameters and anatomic coverage remained constant.

收集65例临床拟诊肾及输尿管结石病例，每一病例在常规标准剂量(120KV， 160mAs)扫描后再行低剂量扫描，在低剂量扫描中，管电流下降到60mAs，其余参数及扫描范围均保持不变。

Results Low-and high-dose 95% and 50% ethanol extracts and Jiannao Capsule group could improve the learning and memory ability of the Wistar rats, markedly enhance cerebral SOD activities and decrease the levels of MDA, and improved the suppressed activity of the hydroxyl free radical. Of them, high-dose 50% ethanol extracts exhibited the best effect. Conclusion The main effective extracts from Valeriana amurensis Smir.

结果 黑水缬草95%乙醇粗提物低、高剂量组，50%乙醇洗脱物低、高剂量组，中药对照健脑胶囊组均可增强模型大鼠的学习记忆能力，SOD活力显著增加，MDA含量降低，抑制羟自由基能力增强，尤以50%乙醇洗脱物高剂量组效果最佳。

Combined infusion of low dose ADM with high dose norepinephine or endothelin could abolish the vasoconstrictive effects of pre-mentioned vasoconstristors.

低浓度的ADM与NE或内皮素联合输注，即可完全逆转后两者的血管收缩作用。

Still have, grow in its in development process, if discover blade is shown lilac produce curly phenomenon, show excess of nitrogenous fertilizer employ, answer right now decelerate little dose or extend fertilization time; And blade is shown virescent make clear devoid nitrogenous fertilizer again, answer to increase dose appropriately.

还有，在其生长发育过程中，假如发现叶片呈淡紫色并产生卷曲现象，就说明氮肥施用过量，此时应减速少施肥量或延长施肥时间；而叶片呈淡绿色则又表明缺乏氮肥，应适当增加施肥量。

Initial laser dose was 12 mcal/cm2 (50 mJ/cm2) less than the minimal erythemal dose in vitiliginous skin, and fluences were increased by 12 mcal/cm2 at every second session.

起初的雷射剂量是12 mcalcm2（50 mJcm2），低於使用於白斑皮肤最低的引起红肿的剂量，而且每个接受隔次治疗时将剂量加到12 mcalcm2。

The highest dose of CERA showed the best effect in all groups,With a good dose-response pattern.

CERA以上这些作用以高剂量组效果最佳，呈明显的剂量效应关系。

Blood-cooling and blood flow-promoting drugs has the effect of prevention and treatment for the early radiation-induced lung injury, Middle-dose and high -doses group were better than small-dose, however theres no difference between them. Suggest that using the adequate doses of blood-cooling and blood flow-promoting drugs would not enhance the effects of prevention and cure for radiation-induced lung injury if the doses of drugs were aggrandized.

早期应用凉血活血方对放射性肺损伤有防治作用，大、中剂量组的防治效果明显好于小剂量组，但大、中剂量两组无差别，提示凉血活血方中剂量即为较理想有效剂量，剂量加倍而疗效并不增强。

Results: 1. The value of all experimental indexes decreased significantly after heat stress, and reached the lowest at the time 2-8 hours after heat stress. This indicates that the immunity of the mice is damaged to the largest extent at 2-8 hours after heat stress. 2. L-arginine supplementation with appropriate dose could remit the acute atrophying of thymus and spleen tissue caused by heat stress. 3. After L-arginine supplementation with appropriate dose, the lymphocyte proliferation, the level of concentration of IL-2 and * expression of IL-2R raised in the group with room temperature; in the heat stress group the level of three indexs decrease significantly. Furthermore, the decrease of the group given 1 .Smglg.bw L-arginine is the smallest. This result indicates that the concentration of 1 .Smglg.bw L-arginine supplementation could remit the depressment of the immunity caused by heat stress. 4. The [Ca2~] in activated thymocytes of the group with L-arginine -2- supplementation is significantly higher than that of the group with water supplementation. This indicates that L-arginine supplementation could protect thymoeytes of mouse under heat stress. We also found that the fluorescence intensity of [Ca2~] in activated thymocytes of the group given 1 .Smglg.bw L-arginine is the highest.

结果：1、热应激后小鼠的各项免疫指标均有显著性下降，其中在2.8小时降到最低，提示在这个时间段小鼠的免疫功能受到最大损害；2、适量补充精氨酸有助于缓解热应激导致小鼠胸腺和脾脏的急性萎缩；3、常温组，补充适量精氨酸后小鼠淋巴细胞增殖活性、IL-2的浓度及IL-2R的表达均有显著性上升，而热应激后三指标均显著降低，其中在精氨酸给予浓度为1.5mg/g.bw时三指标的降低程度最少，提示该浓度可最大程度缓解热应激对小鼠免疫功能的抑制；4、补充精氨酸组的活化胸腺细胞［Ca~(2+)］较给水组有显著性上升，说明精氨酸对热应激小鼠胸腺细胞具有保护作用，并发现在精氨酸给予浓度为1.5mg/g.bw时活化胸腺细胞的胞浆钙离子荧光强度达到最大；5、热应激后小鼠血清NO的浓度均有不同程度的上升，补充精氨酸后血清NO上升更加明显，但并非随精氨酸给予浓度的增加而增加。

In patients with acute PE, if IV UFH is chosen, we recommend that after an initial IV bolus (80 U/kg or 5,000 U), it is administered by continuous infusion (initially at dose of 18 U/kg/h or 1,300 U/h) with dose adjustment to achieve and maintain an APTT prolongation that corresponds to plasma heparin levels of 0.3 to 0.7 IU/mL anti-Xa activity by the amidolytic assay rather than administration as IV boluses throughout treatment, or administration without coagulation monitoring (Grade 1C).

急性PE患者，如果选择IV UFH，我们推荐初始快速注射80U/kg或者5000U，继之以18 U/kg/h 或 1，300 U/h持续静滴。根据APTT延长，或者监测血浆肝素水平在0.3'0.7IU/ml， amidolytic assay 分析抗Xa因子活性来调整UFH剂量，而不能持续静脉注射治疗，或者不监测凝血功能（1C）。

Methods Forty mice were randomly divided into 4 groups: one normal control group,mice in the other three groups were all infected each with 25 cercariae, the infected control group was fed for 10 weeks after infection, and 2 weeks after infection, the high dose PTX group was given PTX 360 mg/ for 8 weeks and the low dose PTX group was given PTX 180 mg/also for 8 weeks.

将40只小鼠随机分为4组，其中3组每只小鼠人工感染日本血吸虫尾蚴25条，1组感染后继续喂养10周，不作治疗，作为感染对照组；2组分别于感染后2周用PTX 360 mg/和180 mg/灌胃治疗8周；另1组不感染、也不接受药物治疗，与上述3组同步喂养10周，作为正常对照组。10周后将上述4组小鼠分别剖杀取肝组织，光镜观察肝组织病变；用免疫组化染色方法检测小鼠肝组织中Bcl-2、Bax的水平。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

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