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- lethal exposure dose 50% 半致死暴露剂量<在规定的暴露时间里
- The Lethal Dose 50 test (LD50) may also be replaced. 药剂致死剂量50(LD50)试验也可以被代替。
- The exposure dose of most of patient's neck during operation exceeded 50 mSv, a shielding instrument containing lead for the patient's neck during operation was needed. 可选择铅和含铅材料作为防护材料。
- The eyes of rabbit received 0.0125 GY single exposure dose of fast neutron from Amc-Be neutron source. Am-Be中子源;0.;0125Gy快中子照射北京灰兔双眼及全身;照射时间为150分钟。
- Methods The exposure dose, imag ing time and image quality were compared in the two digital imaging system. 方法对两种数字化成像系统的曝光剂量、成像时间和图像质量进行比较分析。
- Cathay Pacific has also adopted an additional internal action level to ensure that crew will not exceed the recommended exposure dose. 国泰航空已采用相关措施以确保机组人员不超过建议的年辐照量。
- A real-time exposure dose control algorithm for DUV excimer lasers in a step and scan projection lithography is presented. 提出了一种面向步进扫描投影光刻机的深紫外准分子激光实时曝光剂量控制算法。
- Keywords Toddalia asiatica;anti-inflammation;analgesia;lethal dose 50; 关键词飞龙掌血;抗炎作用;镇痛作用;半数致死量;
- In each case that required a computed tomography scan of the pelvis, the calculated radiation exposure dose to the fetus was greater than 5 cGy. 每个需要骨盆CT扫描的患者，其胎儿接受的放射剂量经计算大于5cGy。
- Keywords lethal dose 50;drugs;chinese herbal;mice;Nao gong tai oral liquid; 关键词半数致死量;中草药;小鼠;脑功肽口服液;
- Dose equivalent of exposure dose in mammary is the highest, those in thyroid is the secondary, and genitical gland area has the lowest dose. 各敏感器官以乳腺受照剂量当量最大，其次为甲状腺，性腺区最少。
- All dose equivalent of exposure dose in sensitive organs in non-projection center in high KV photography lower than those in low KV photography. 高管电压摄片时，非投照中心点各敏感器官受照剂量当量均比低管电压摄片时低。
- Keywords Cortex Periplocae;dispensing granule;lethal dose 50;toxicokinetics; 香加皮;配方颗粒;半数致死量;毒代动力学;
- Conclusion When the KV is as high as possible and the exposure field is as small as possible, each dose equivalent of exposure dose of organs out of exposure field is decrease. 结论：胸部摄片时管电压越高，照射野越小，照射野外各部位受照剂量当量亦越少。
- Although spiral CT has the disadvantage of high X-ray exposure dose, high cost and adverse reaction due to contrast medium, it is of great value in diagnosing breast carcinoma. 虽然螺旋CT检查的照射剂量较大、检查费用高及对比剂带来的副作用，使它不适宜用于乳腺癌的普查，但它在乳腺癌高危人群中对于早期诊断乳腺癌方面具有较高的价值。
- Presents the concepts of exposure cell and its layered model in order to get more accurate exposure dose of indoor occupants during the short period of incidents. 摘要为了准确获得短时间内人员在室内微环境中的暴露剂量，提出了暴露单元及分层模型的概念。
- Objective To investigate the magnitude of dose equivalent of exposure dose in different organs of human being using high and low KV X-Ray photography in chest. 摘要目的：探讨胸部高、低管电压X线摄片对人体不同组织器官的受照剂量当量大小。
- lethal exposure time 50% 半致死暴露时间
- Both DR and CR have raised the picture quality and lower the exposure dose than conventional radiogram to varying degrees, and also have higher efficiency and more profit by shortening the examination and review time, but DR dominates over CR. DR和cr均提高了图像质量,不同程度减低了被检者所受X线照射量,通过缩短检查和发报告的时间加快了工作效率,带来更高的效益,DR较之cr更具优势。
- The results of numerical simulation show the lesion of photoaging skin can be selectively damaged if the wavelength, exposure duration and exposure dose of irradiated ligh are reasonably selected. 数值模拟的结果表明:合理选择光辐射波长、辐射曝光时间和曝光剂量,可以选择性的热破坏光老化皮肤中的病损组织。
