浓度

The particle size of the dispersed gel synthesized under lower HPAM concentration increases with the concentration of HPAM or AlCA, but does not change evidently on addition of NaCl, Which shows the good salt tolerance property of dispersed gel.

在较高HPAM浓度下形成的连续网状凝胶，只有在／为最佳配比条件下才能获得最大的强度；在较低HPAM浓度下形成的分散凝胶，其粒径随HPAM或AlCA浓度增加而增大。

Strain 9813 of Alcaligenes eutrophus derived by physical mutation can ferment fructose-glucose syrup to produce PHB.

经过物理诱变得到能利用果葡糖浆生产PHB的真养产碱杆菌9813，摇瓶发酵的适宜条件是：初糖浓度为2.5％～3.0％，硫酸铵浓度为0.3％，发酵时间48h，PHB浓度为14.7～14.8g·L〓。

Twenty three troublesome weeds and five crops were tested to study specificity of helminthosporin. The result showed that 18 out of the 28 species were susceptible to the toxin. Chenopodium serotinum is the most susceptive, and D. sanguinalis, Polygonum aviculare, Beckmannia syzigachna, Chenopodium album and Alopecurus japonicus took second place.

该毒素在150μg/mL浓度下，对马唐胚根生长抑制率达44.59%；当毒素浓度达到200μg/mL时，叶绿素含量下降18.41%；在500μg/mL浓度下，毒素对供试的23种杂草产生的毒害程度不同，其中小藜对毒素最为敏感，其次为马唐、萹蓄、菵草、藜和日本看麦娘等恶性杂草。

The effect of gold nanoparticles on the resolution and selectivity of separation was investigated. The influence of separation voltage, pH and buffer concentration on the separation of aminobenzoic acids was also examined.

探讨了修饰金纳米浓度、修饰时间以及缓冲溶液加入一定浓度的金纳米对三种氨基苯甲酸分离和测定的影响，优化了分离电压、酸度以及缓冲溶液浓度等实验条件。

He CD4〓 T-cell viability determined by the trypan blue test was over 90%. PBMCs from the recipients, after inactivated, were added in 96-well culture plates with donor CD4〓 T-cell cocultured at 37℃ for 24 hours, TJU103 and CTLA4-Ig were given for additional 48 hours coculture. The CD4〓 T-cell was collected and washed as anergic CD4〓 T-cell.

JU103联合CTLA4-Ig应用对供者T细胞增殖活性的影响根据TJU103有剂量限制性特点，选择TJU103最大抑制效应浓度50μg/ml，与不同浓度CTLA4-Ig（1μg/ml、10μg/ml、50μg/ml、100μg/ml）联合，对供者T细胞的增殖抑制率分别为（59.5％、90.5％、93.4％、95.8％），TJU103（50μg/ml）与低浓度CTLA4-Ig（10μg/ml）联合，增殖抑制率在90％以上，已接近最大增殖抑制率，为二者联合应用的最佳组合，与单独应用组比较，有显著的统计学差异（p＜0.05）。

Methods Sixteen adult Sprague-Dawley rats were enrolled, from which anticoagulative erythrocyte suspension was made, and was incubate with equivalent volume of 1 time,2 times,4 times and 8 times of clinical therapeutic blood concentration of different local anesthetics respectively. Erythrocyte-yeast rossete and Tumor-erythrocyte rosette rate were measured.

选择成年SD大鼠16只，取抗凝血制备成所需浓度的红细胞悬液，与等体积的临床血药浓度、2倍、4倍及8倍临床血药浓度的各研究麻醉药物孵育后，加入补体致敏酵母菌或用自身血浆作为补体来源致敏的肿瘤细胞，测定红细胞、酵母菌花环率和肿瘤细胞-红细胞花环率。

The tolerance to glyphosate of Zong 31 and weeds in the 3-leaf period indicated that it was belter to prevente and cure weeds when the glyphosate concentration was 1.2g/l,which was nearly the lethal concentration of Zong 31 in the 3-leaf period.

草甘膦在玉米三叶一心时对玉米和杂草的喷施效果表明，1.2g/l的浓度时对杂草的防治效果良好，对玉米接近致死浓度，所以确定筛选时期选择在玉米三叶一心时期，浓度为1.2g/l。

Betulinic acid had actiity against HI at the micromolar leel," says Graham Allaway, Panacos's chief operating officer."This deriatie had actiity at the nanomolar leel.

Panacos的执行长艾拉威说：桦木酸在微莫耳浓度的范围有抗HI活性，而这个衍生物的作用浓度是奈莫耳浓度。

It was increased ethyl hexanoate synthesis substrate concentration mediated by Rhizopus chinensis 2113 whole-cell lipase after improved synthetic activity and optimized reaction condition. The reaction condition were: caproic acid concentration 2.4mol/L, substrate molar concentration ratio 1:1.1, initial water content ≤0.2%, lipase water activity 0.3~0.66, enzyme amount 16%, reaction temperature 30℃, agitation speed 150 r/min.

通过合成酶活的提高及反应条件的优化，提高了华根霉2113全细胞脂肪酶催化己酸乙酯合成的反应底物浓度，其反应条件为：己酸浓度为2.4mol/L；酸醇摩尔浓度比1：1.1；反应体系含水量≤0.2%；脂肪酶水活度0.3～0.66；加酶量16%；反应温度30℃；150r/min振荡反应。

Along with the process of treating time and the increase of the cadmium concn., the chlorophyll content of D. caryophyllus was reduced. When D. caryophyllus leaves were treated by 5.0 mg/L cadmium for 20 d, the cadmium concn. showed a negative correlation to time, with correlation coefficient of-0.789. In the same treating time, the cadmium concn. showed significant negative correlation with chlorophyll content.

随着处理时间的推移和镉浓度的增加，石竹叶绿素含量在减小，镉为5.0 mg/L处理20 d时，镉浓度与时间相关系数为-0.789；在同一处理时间内，镉浓度与叶绿素均呈显著负相关。

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！