毒性

Its isotopes, all radioactive, are highly toxic radiological poisons because they give off alpha particle s and are specifically absorbed by bone marrow.

它的所有同位素都是放射性的，因其放出的α粒子易于被骨髓吸收而具有高度的放射性毒性。尽管具有潜在的致命性，它的毒性通常是被夸大了的。

In the present study, the acute and sub-acute toxicity of copper on amphioxus and rosy barbs was investigated.

采用半静水实验法测试研究了重金属Cu(上标 2+)对文昌鱼和玫瑰无须鲃的急性致死毒性和亚急性毒性。

In reference to ASTM water accommodation friction for preparing ecotoxic testing sample solution,the ecotoxicity of four kinds of nanometal additives were inspected and evaluated by applying luminescent bacteria .

采用发光细菌毒性测试技术，参照ASTM的WAF方法制备油类生物毒性测试样品液，对Cu、A、lZn、Ti 4种纳米金属添加剂的生物毒性进行了检测与评价。

V increased (other than Ara-C) and the inhibitory effect against 〓 improved significantly, especially for ADM. The empty pro-liposomes may undergo three process when hydrated with drug solution: swelling of phospholipid film, fracture of film and resealing to form vesicles.

以空白脂质体前体为载体，对几种临床上常用的抗癌药物的抑瘤活性及毒性进行了研究，研究结果得出：与游离药物相比，5-Fu，阿霉素等药物的抑瘤活性都有不同程度的提高；急性毒性实验表明：除Ara-C外，几种药物的毒性均有所降低，以顺铂最明显。

Methods Acute oral toxicity test, subchronic inhalation toxicity test and mutagenicity test were conducted to observe the effects of petroleum asphalt in experimental animals.

方法通过石油沥青急性经口毒性、亚慢性吸入毒性及遗传毒性的实验研究，观察在该实验条件下，石油沥青对受试动物的影响。

Results showed that there were significantly positive linear correlations between the toxic effects（probits of mortality and inhibition rate） of chlorpromazine on the two aquatic organisms and the concentrations of chlorpromazine, and the toxic intensity became higher as the exposure time increased. The LC50 values of chlorpromazine acting on Carassius auratus in 24, 48 and 96h were 1.11, 0.43 and 0.32mg·L-1, respectively; and its safe concentration for Carassius auratus was 19.5μg·L-1. The LC50 and EC50 （50% of the tested Daphnia magna inhibited） values of chlorpromazine acting on Daphnia magna in 24h were 0.65 and 0.57mg·L-1, and the LC50 and EC50 values in 48h were 0.36 and 0.28mg·L-1, respectively. Thus, chlorpromazine have high toxicity to Carassius auratus and Daphnia magna, and the latter is more sensitive to chlorpromazine.

结果表明：氯丙嗪对两种水生生物的毒性效应（致死率、抑制率概率单位）均与其浓度呈显著线性正相关关系（p.05），且毒性强度随作用时间的延长而增加；氯丙嗪对鲫鱼的24、48和96h的半致死浓度（LC50）值分别为1.11、0.43和0.32mg·L-1，通过计算求得氯丙嗪对鲫鱼的安全浓度为19.5μg·L-1；氯丙嗪对大型蚤的24h LC50值为0.65mg·L-1，24h EC50值（使50%受试大型蚤活动受抑浓度）为0.57mg·L-1；48h LC50值为0.36mg·L-1， 48h EC50值为0.28mg·L-1；对鲫鱼和大型蚤而言，氯丙嗪属极高毒性物质，大型蚤对氯丙嗪的敏感性大于鲫鱼。

Compared with the single pollution, the eco-toxicity of compound pollution of As+Cd and Cu+Cd becomes stronger, which preemie a synergistic effect, as far as the lethal concentration to the cell of duckweed's lemma is concerned; As+Cu and As+Cu+Cd is inclined to an antagonistic effect of which the eco-toxicity of compound pollution becomes weaker.

与单一污染相比，As+Cd和Cu+Cd复合污染对浮萍叶绿素毒性增强，表现为协同作用，加强了对浮萍叶细胞的伤害；而As+Cu和As+Cu+Cd复合污染对叶绿素联合毒性作用趋向于毒性减少的拮抗作用。

Culture medium, water volume, root exudates of different crops, temperature, illumination affecting germination conditions of oospores of Phytophthora sojae studied in this reasch and compared the difference of germination of oospores of different race of Phytophthora sojae, filtrated the higher germination rate of strain and suitbable conditions combination of germination of oospores; The pure-line(Race 1) in virulence was obtained through isolation and culture and virulence identify of the second generation. The pure-line was analyzed by molecule method of ISSR. The results were summarized as follows:There was quite difference of germination rate of oospores on different culture medium.

本文测定了不同培养基、水量、农作物根渗出液、温度、光照对大豆疫霉菌卵孢子萌发影响，比较了大豆疫霉菌株间卵孢子萌发的差异，筛选出萌发率较高的菌株和适于卵孢子萌发的条什组合；通过继代单卵孢株分离培养和毒性鉴定，建立了大豆疫霉菌单卵孢株毒性纯系，并分析了单卵孢株毒性纯系后代群体ISSR分子指纹，结果如下： 1。

The illumination is of no effect on the germination rate of oospores of Phytophthora sojae.30 single-oospore isolates obtained from the test strain of Phytophthora sojae Ps-H2 (Race 1 ) were evaluated using hypocotyl-inoculation method for race phenotype on soybean cultivars. One clone phenotype ( race 1 )was selected randomly for further isolation and virulence identify .

将大豆疫霉菌供试菌株Ps-H_2(生理小种1号)每代挑取30个单卵孢株，进行生理小种鉴定，随机挑选1株1号生理小种的单卵孢株继续进行单卵孢株分离和毒性鉴定，连续两代试验结果表明大豆疫霉菌原始菌株并朱出现毒性分化，表明原始菌株即为1号生理小种的毒性纯系。

Toxicities of methanol, propylene glycol and n, n-dimethylformamide were lower than the others when sea perch and Japanese flounder embryos were exposed to 6 cryoprotectents, respectively.

鲈鱼尾芽期胚胎在十种稀释液中分别处理后，DS1组的胚胎成活率最高(95％)，与海水对照组没有显著差异。鲈鱼和牙鲆胚胎单一抗冻剂的毒性实验结果表明，甲醇、1，2-丙二醇和二甲基甲酰胺的毒性低于其它三种抗冻剂的毒性。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。