浓度测定

In this article, the test was conducted that different physiological indexed of fresh dry weight、succulence、the plasma membrane permeability、MDA content and chlorophyll content were determined while Vicia faba L.

用Na2CO3处理蚕豆幼苗，处理浓度为25，50，75，100mmol/L，胁迫6天后取样，测定植株鲜干重、肉质化程度、细胞膜透性、丙二醛含量、脯氨酸含量叶绿素含量等生理指标。

It holds that for low concentration of wastewater effluent of the sugar mill,the relational line between BOD and COD can be obtained by applying the statistical method of linear regression on the series of data of the corresponding BOD and COD,once it can be determined.

认为对糖厂的低浓度废水：只要测定其对应的生化耗氧量和化学耗氧量的一组数据，通过直线回归法统计，便可得出这两者的关系直线

Methods:The susceptibilities of 80 gonococcal epidemic strains to 8 fluoroquinolones were detected by agar dilution methods .

临床标本分离的 80株淋病流行株，采用琼脂稀释法测定淋球菌对 8种氟喹诺酮药物的最小抑菌浓度及交叉耐药情况。

The RRS intensity was enhanced obviously after the drugs and DNA reacting with each other, which indicated the formation of new products for the maximum peak appeared at around 375 nm with slight red shift. Then the Cu ion was added into the system to form a ternary system, and the RRS intensity was enhanced significantly, when the enhanced spectral value was directly proportional to the concentration of the DNA. Thus a highly sensitive method could be obtained for determining DNA and the detection limit of the experiment reached 9.7 ng/mL for the RFSV system.

两者反应形成结合产物后其RRS明显增强，并在375 nm左右出现最大散射峰，且有不同程度的红移和散射增强，说明两者结合成新的产物；加入Cu2＋离子后， Cu2＋与利福霉素抗生素及DNA形成三元复合物，此时将导致RRS进一步剧增，而且RRS光谱增强值与DNA浓度呈正比，因而可用于DNA测定具有较高的灵敏度，实验对ctDNA的检出限为9.7 ng/mL (RFSV-Cu2＋- ctDNA体系)。

Pf7-14 was chosen to study the spatial-temporal colonization patterns on both rice flag leaves and rice stems under greenhouse conditions by spraying 1×10〓 cfu/ml bacterial suspension of Pf7-14 at late booting stage, periodical sampling, and recovering the bacteria through diluting-plate method as well as graphic test and the Shapiro-Wilk test for normality of the data.

以菌株Pf7-14为代表，在温室条件下，在水稻孕穗后期喷雾浓度为1×10〓cfu/ml的菌悬浮液，然后定期取样，用稀释平板法在含抗生素Nal的培养基上回收细菌，并通过图形测试和Shapiro-Wijk正态测试，测定了该菌株在水稻剑叶和茎基部的时间、空间定殖型。

The AVS-SEM distribution in the sediments of Guanting Reservoir and Yongding River was studied and the metal concentration in the water above the sediments and the pore water was measured. Based on the results, the reaction between the sediments and metal ions were discussed and the heavy metal pollution of the sediments in Guanting Reservoir and Yongding River was evaluated preliminarily.

官厅水库沉积物，由于处于缺氧性环境，沉积物中的酸可挥发性硫化物控制着大多数金属离子在沉积物和孔隙水两相间的分配，本文通过现场采样，分析了官厅水库和永定河沉积物中的AVS—SEM的分布，同时测定了沉积物上覆水以及部分样点的孔隙水中的重金属浓度，探讨了沉积物与重金属离子的作用；并根据采样分析结果对官厅水库及永定河沉积物中的重金属污染做了初步评价。

Those indices such as AOPPs, protein thiol groups and dityrosine were used as biomarkers of protein injury.

对照组内不加任何尿毒素。37℃分别温育0.5 h和24 h后，分别测定各组的AOPPs、蛋白巯基及二酪氨酸浓度。

According to the fluorescence measurement results from mixed solution, the association constant estimated for thioridazine hydrochloride-BSA binding and the number of the binding site with Scatchard analysis were 1.2×104 L/mol and 0.98, respectively.

将盐酸硫利达嗪与牛血清白蛋白以不同比例混合并在37 ℃下培养，以流动注射透析采样技术从混合液中分离出游离盐酸硫利达嗪，在线氧化为强荧光化合物后测定其浓度；应用Scrathard方程分析所测数据，求得盐酸硫利达嗪和牛血清白蛋白的结合常数为1.2×104 L/mol，结合位点数为0.98；根据热力学参数推断，盐酸硫利达嗪与牛血清白蛋白之间以疏水作用力为主；进一步基于荧光猝灭现象和Fster非辐射能量转移理论，得到盐酸硫利达嗪小分子与牛血清白蛋白之间的能量转移效率( E =0.497)和结合距离( r 0=3.27 nm)。

The optimum conditions such as acidity, reaction temperature, dosage of thoron Ⅱ solution and reaction time for the system were studied in detail.

详细考察了反应酸度、温度、钍试剂Ⅱ浓度及反应时间等对铬测定的影响。

The contents of 226Ra and 232Th of honeycomb briquette were used to calculate the contribution of honeycomb briquette burning to indoor radon and thoron and their radiation dose to the residents.

应用γ能谱测定了西安市蜂窝煤中天然放射性核素226Ra、232Th和40K的含量，并初步分析了取暖期蜂窝煤燃烧对室内氡及钍射气浓度的贡献，以及所致居民剂量。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！