测定时间

Toxicity and repellent activity of several plant-based compounds on Blattella germanica were studied, results showed that rotenone, toosendanin and azadirachtin had stomach toxic effect on Blattella germanica, rotenone showed high stomach toxicity and all insects died after 8 hours, matrine also has deformative effect on Blattella germanica , matrine and toosendanin can affect oviposition of Blattella germanica; repellent activity of these botanicals was further studied, results showed that bering hydrochloridum, azadirachtin and sparteinehave had repellent activity against Blattella germanica, observation also showed that rotenone and bering hydrochloridum had high contact toxicity against Blattella germanica, the time of all insects knocked down were 8 and 48 hours.

选取了7种植物源化合物，测定了它们对德国小蠊的毒性和驱避性，结果表明，鱼藤酮、川楝素和印楝素对德国小蠊具有不同程度的胃毒作用，其中鱼藤酮乙酸乙酯溶液作用较强，8小时死亡率已达100％，川楝素和印楝素对德国小蠊也表现出一定的毒杀作用，观察还发现印楝素和苦参碱对德国小蠊的发育有致畸作用，苦参碱和川楝素影响其卵鞘形成；进一步对这几种化合物的驱避性进行研究，结果表明盐酸黄连素、鱼藤酮乳油和印楝素乳油对德国小蠊有不同程度的驱避作用，其驱避率分别为96.7％、51.3％和50.1％，另外观察到鱼藤酮乙酸乙酯溶液和盐酸黄连素对德国小蠊具有较强的触杀活性，供试虫全部被击倒的时间分别为8小时和48小时。

Flow cytometry results showed that: 1） When cells were treated with Diallyl trisulfide at the concentration of 10 μg/mL for 12 h and 24 h the percentage of G0/G1 phase cells was decreased and that of G2/M phase cells was significantly increased compared with those in the control group.2） Diallyl trisulfide down regulated Bcl expression while up-regulated bax expression.

结果：MTT显示大蒜素能抑制人结肠癌 HT29细胞的增殖，并具有时间-剂量依赖性；流式细胞术测定结果显示10 μg/ml大蒜素可明显诱导HT29细胞凋亡，并将细胞周期阻滞在G2/M期；可降低癌基因蛋白Bcl表达，而促进Bax表达。

Pharmaceutical characteristics of dimethylamino ethyl(4-chlorophenylmethfoxy )acetate hydrochloridein rabbit was studied and several parameters at different timeand way of medicine administration were determined.

研究了4－氯代苯甲氧基乙酸二甲氨基乙酯盐酸盐在家兔体内的药代动力学，测定了不同时间不同给药方式家兔体内的血药浓度及动力学参数。

Methods The time-weighted average concentration Short-term exposure limits of benzene and toluene and dimethylbenzene in 10 furniture factories were measured.

对10家家具厂工作场所中苯、甲苯、二甲苯进行时间加权平均浓度和短时间平均浓度测定。

Epidemiological studies, clinical trials or both have examined the effects of fiber on carbohydrate metabolism, lipid metabolism, colon cancer, diverticular disease, constipation, weight reduction, and other conditions.

富含〓的底物在人体内将被氧化代谢为〓〓和水。通过气体同位素质谱仪测定一定时间内呼气中的〓〓比值变化，可以评价摄入的营养物质在体内吸收、代谢的情况。

Methods:the thin layer scanning method was used to determine the content of ellagic acid.

选用4因素3水平正交表l9(34)，以薄层扫描法测定鞣花酸含量，考察4个因素（溶剂类型，提取时间，提取次数，溶剂用量）、3个水平对鞣花酸提取率的影响。

To evaluate the potential of several biodiesels, which had different content of fatty acid methyl ester, as substitute solvent for quizalofop-p-ethyl emulsifiable concentrate, the type and content of fatty acid methyl esters in tested biodiesels were analyzed by gas chromatography, and 5% quizalofop-p-ethyl ECs were prepared with different biodiesels, respectively. The control test against gramineous weeds by the 5% quizalofop-p-ethyl ECs were carried out in greenhouse.

为评价不同来源生物柴油作为溶剂配制精喹禾灵乳油的效果，采用气相色谱法测定了几种生物柴油中脂肪酸甲酯的种类及含量，利用相应制备的5%精喹禾灵乳油进行了防治禾本科杂草的盆栽试验，同时比较了不同生物柴油对药剂稀释液表面张力、干燥时间和在叶片表面沉积量等药液物理性状的影响。

In the second part, we use HPLC method to determine the content of chlorogenic acid in the seeds of Eucommia ulmoides dried by different ways and storing for different time.

第二部分中用高效液相色谱法对通过不同干燥方法干燥和存放不同时间的杜仲种子中绿原酸的含量进行了测定。

Expiratory time is measured from the beginning of exhalation to the beginning of the next inspiration .

呼气时间测定是呼气开始到下一次呼气开始。这里的&呼气&应该是&吸气&吧？麻醉学相关临床指南汇总！

Acidosisamplified the effects of hypothermia, and synergistically impairedclotting times, angle, and decreased maximum clot firmness,again in both extrinsically and intrinsically activated assays.

酸中毒放大了低体温的作用，并在本质和非本质活化测定中协同性损害凝血时间、α角并减小最大凝块硬度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。