查询词典 lethal dose

And the semi-lethal temperature of the plant tissues was gotten according to Logistic equation. The result shows that these cultivars' semi-lethal temperatures distribute from -2.91 to -5.48℃. With the application of geography information system, the temperature suitable ecotopes in China of Bougainvillea were established by use of -3℃, the general lethal temperature, as the determinator.

对我国广泛栽培的21个三角梅品种进行了模拟低温电导率测定，确定低温致死范围在-2.91℃～-5.48℃之间；以三角梅品种普遍致死温度-3℃为依据，采用地理信息系统进行了三角梅在我国的温度适宜区划。

And once the campus violence happens, the condition will either be just blows exchange or, seriously, the appearance of some lethal weapons like knife and gun. However, this also must be ascribed the blame to the over loose of lethal weapons in the American legislations. In many regions, the lethal firearm can even be reached easily.

而一旦有校园暴力事件产生，轻则只是拳打脚踢一番，但严重的就有可能出现刀枪等具有杀伤力的武器，而这种情况也必须归咎於美国法律对於危险性武器的管理制度过於松散，甚至在许多地区，这种具有杀伤力的枪枝几乎是随手可得。

The inhibition effects became stronger with the increase of the irradiation dose. Semi-lethal dose of Ailanthus altissima Swingle seeds was 50Gy. 50~75Gy could be considered as the proper dose for seed irradiation treatment of Ailanthus altissima Swingle.

结果表明：辐照抑制了种子的萌发，成苗率下降，幼苗生长受到抑制，且随着剂量的增加，抑制作用增强；椿树种子的半致死剂量为50Gy，适宜辐照剂量为50~75Gy。

The seeds of Adzuki bean were irradiated by 60 Co γ ray of 0～700Gy.The results showed that:(1)The sub\|lethal dose(LD 50 )was 389Gy and the early seedling leaf at M\-1 showed incised,chlorotic,yellow,mosaicand curly edge.The absorbed dose was related with the rate of misshaped leaf.Chromosomal aberration, chromosome bridge and fragment of M\-1 in the tip were observed.If the seed was irradiated with 400Gy,the rate of abnormal cell at the root was more than 10%.The relationship between pollen fertility and irradiation dose was negative correlated.

本试验研究结果表明：60 Coγ射线辐照小豆种子的半致死剂量平均为 3 89Gy ，且M1生长初期叶片性状有明显的叶面缺刻、叶色缺绿、叶形不对称、叶缘卷曲、花叶、黄叶等致变现象，各种畸型叶出现频率与辐照剂量大小有关；M1根尖细胞中有多种染色体畸变类型，以染色体桥和断片频率较高，辐照剂量在 40 0Gy以上时根尖细胞异常率达 1 0 %以上；植株花粉育性与辐照剂量呈极显著负相关，京农 2号植株花粉育性达 5 0 %时的辐照剂量为 3 78Gy。

In clean diluent condition, the median lethal concentration (MLC50) of CIO2 against bacteria and yeast was 9.4 and 8.4 ppm, respectively. In dirty diluent condition, the MLC50 of CIO2 against bacteria and yeasts was 39.9 and 24.3 ppm, respectively. The virucidal activity of CIO2 against 100 median embryo lethal dose (100 ELD50) of Newcastle disease virus, avian influenza virus, infectious bronchitis virus and infectious bursal disease virus was 1.2, 1.2, 2.5 and 1.2 ppm, respectively.

发现CIO2在乾净稀释液中对细菌和酵母菌的中间致死浓度(MLC50)分别为9.4和8.4ppm，CIO2在污浊稀释液中对细菌和酵母菌的MLC50分别为39.9和24.3ppm，CIO2之杀灭新城病病毒、H6N1型家禽流行性感冒病毒、传染性支气管炎病毒和传染性华氏囊炎病毒的浓度分别为1.2、1.2、2.5和1.2ppm。

The test results of acute toxicity were examined with Pearson's degree of fitting. The results indicated that the silkworm was extremely sensitive to Chlorantraniliprole. The median lethal concentration (LC50) was 4.0905×10^(-3) mg/L and median lethal dose (LD50) was 1.1435×10^(-8) mg/larva for the 3rd instar newly exuviated larvae. No toxicity was observed when normal concentrations of Chlorantraniliprole were used to fumigate the silkworm rearing room. Both irrigation and leaf spraying with 1.25×10^(-4) mg/L Chlorantraniliprole solution showed strong systemic transmission properties in root, leaf and whole plant. The residual toxic period of this insecticide to silkworm was very long. Mulberry leaves sprayed with 1.25×10^(-4) mg/L Chlorantraniliprole solution could still cause 100% mortality of the 3 and 5 instar larvae after 60 d. Furthermore, toxic reaction was very quick. The poisoning symptoms emerged within 1~5 h after feeding on the poisonous leaves. The poisoned larvae experienced such symptoms as stopping ingestion, remaining still, vomiting slightly and body atrophy sequentially, and died ultimately.

食下毒力试验结果经Pearson拟合度检验表明，氯虫苯甲酰胺对3龄起蚕的食下致死中浓度(LC50)为4.0905×10^(-3)mg/L，致死中量(LD50)为1.1435×10^(-8)mg/头；药剂在常规浓度下对家蚕无熏蒸毒性；1.25×10^(-4)mg/L稀释药液对桑树根灌和喷叶处理，表现极强的根部、叶部和全株性内吸传导特性；药液对家蚕的残毒期很长，1.25×10^(-4)mg/L稀释药液田间喷雾桑叶，间隔60 d后采叶饲喂3龄和5龄蚕的死亡率均为100%，且中毒反应极快，添食毒叶后1~5 h出现中毒症状，经停止食桑、静伏、少量吐液、蚕体萎缩等过程后陆续死亡。

The effect of Jiusuyu on ebriety rate, ebriety time of acute alcoholism mice observed after preventing treatment 80 healthy mice, bisexual and each half, were randomly divided into 4 groups, 20 mice every group, namely model group (equal volume physiological saline were given through the means of watering stomach), low-dose group of Jiusuyu (called low-dose group, 1.62g/100g avoirdupois Jiusuyu drank through the means of watering stomach), high-dose group of Jiusuyu (called high-dose group, 3.24g/100g avoirdupois Jiusuyu drank through the means of watering stomach), and Gehuaji-echeng liquid control group (called control group, 1.31g/100g avoirdupois) Gehuajiecheng liquid were drunk through the mea

酒速愈预防性给药对急性酒精中毒小鼠醉酒时间、醉酒率的影响健康昆明种小鼠，雌雄各半，随机分为4组：模型组、酒速愈低剂量组(灌服酒速愈1.62g生药/100g体重)、酒速愈高剂量组(灌服酒速愈3.24g生药/100g体重)、葛花解酲汤组(灌服葛花解酲汤1.31g生药/100g体重)，每组20只。各组小鼠禁食12hs，各治疗组均一次性给药，模型组灌服生理盐水，30mins后均以56°红星二锅头酒灌胃(1.4ml/100g体重)。观察记录小鼠醉酒时间(从清醒到翻正反射消失的时间)，小鼠醉酒与否以翻正反射是否消失为标准：小鼠灌酒后将其背向下轻轻放入鼠笼，若小鼠背

Results showed that L-THP possessed negative inotropic and negative chronotropic action, lowed left ventricular pressure and it's infinitesimal calculus, decreased heart output in per min., shorten 〓 and 〓 of action potential of ventricular papillary muscle of guinea pig and even the plate-phase of action potential disappeared in larger dose group , but prolonged 〓. we studied transmembrane transportation of 〓 after administering L-THP , L-THP not only depressed uptake and increased release of Ca 2+ in normal myocardium, but also it showed stronger inhibition in cell injured by ISO, and fully eliminated the effect of ISO increasing uptake and decreasing release of 〓. By detecting the 〓 content of ventricular single myocyte using fluorescent probe Fluo-3/AM, results correspond to that done above, L-THP decreased 〓 content inside of cell significantly. Using whole-cell mode, we observed the effect of L-THP on Ica in ventricular single cell, it was found that L-THP decreased Ica, the effect increased with increasing it's dose, and had voltage, frequency-dependency. Dose highly corelated to effect, corelative constant is 0.87. When washing cell with normal tyre's solution, Ica could recover, which proved the blocked action of L-THP on calcium channel once again. Meanwhile, L-THP reduced production of MDA in heart injured by ISO in dose-dependent manner, improved content of GSH-Px, in case tissue or cell free from free radical damage.

结果显示，该药物具有负性肌力和负性频率作用，降低左室压及其微分，终使每分心输出量减少；缩短豚鼠心室乳头肌动作电位时程的〓和APD〓，大剂量使动作电位平台消失，〓延长；同位素示踪法研究证实L-THP抑制〓摄取，促进〓释放，降低细胞内的〓含量；单通道水平的研究证实，L-THP减少豚鼠心室肌单细胞内向钙电流，且具有剂量，电压，频率依赖性，其作用易于洗脱，药物剂量与Ica也具有高度相关性（相关系数r为-0.87）；L-THP还可抑制ISO损伤心肌组织所致的丙二醛含量增加，增加谷胱甘肽过氧化物酶的量，使组织细胞免受损伤。L-THP阻断L-型〓通道，抑制〓的摄取，促进〓的释放，降低细胞内〓含量L-THP作用的离子基础。

Results In the medium and high dose F0 groups, it was observed that the atrophy and incrassation of seminiferous tubule, decrease of spermatogenesis, hyperplasia of interstitial tissue, especially in high dose groups spermatozoon abnormality and nucleolus concentration in the rats testis after DU ingestion for 14 months. The changes became more severe with the prolongation of DU ingestion. Such changes occurred in filial rats (F1) after DC ingestion for 5 months. In the medium and high dose F0 groups, it was observed that a little atrophy of kidney glomerulus, hyperplasia of interstitial tissue after DC ingestion for 14 months, and kidney glomerulus fibrosis happened after DC ingestion for 20 months, such changes occurred in filial rats (F1) after DC ingestion for 5 months In the medium and high dose F0 groups, splenic germinal center and periarterial lymphatic sheaths were hyperplasia , companies with lymphopoiesis after DC ingestion for 7 months, splenic white pulp became more small and sparse after DC ingestion for 20 months.

结果 F0代的中、高剂量组大鼠摄入贫铀14个月后可见雄性的精曲小管萎缩，管壁增厚呈空虚网状，生精细胞层次减少，间质细胞增生，但仍见有精子生成；高剂量组可见到精子呈异型性改变，细胞核浓缩深染，且随着摄入时间延长改变愈趋明显；F1代大鼠摄入贫铀5个月后就有上述改变且更为严重。F0代中、高剂量组大鼠摄入贫铀14个月后肾小球轻度萎缩，间质增生明显，20个月时肾小球萎缩纤维化；F1代大鼠摄入贫铀5个月后就有上述改变。F0代中、高剂量组摄入贫铀7个月时脾脏生发中心和淋巴鞘增生，淋巴母细胞增生活跃，20个月时脾小体减少，生发中心稀疏；F1代大鼠摄入贫铀早期和晚期有类似改变。F0和F1代高剂量组摄入贫铀早期肝脏有炎症细胞浸润，晚期骨髓有核细胞减少，脂肪细胞增加。

By regularly testing for HBV serological markers, assessing HBsAg-specific T lymphocyte response in vitro by the end of follow-up, and giving a booster dose and estimating anti-HBs anamnestic response thereafter, the study, for the first time, gave a comprehensive evaluation for five-year efficacy of a three-dose revaccination in non-responders based on persistence of anti-HBs, preservation of immunologic memory, and prevention from HBV infection, and in additon compared low-dose ID revaccination with routine-dose IM revaccination.

本项目以健康学龄儿童为研究对象，严格筛检无应答者，用应答者作为同期观察对照，通过定期随访检测抗-HBs、HBsAg和抗-HBc，随访结束时检测HBsAg特异性T细胞免疫以及加强一针后检测抗-HBs回忆应答，从抗体持续时间、免疫记忆维持和预防HBV感染等几个方面首次系统评价了无应答者3针复种后5年效果，并比较了相同针次常规剂量肌肉复种与小剂量皮内复种效果。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。