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In the slow sorption stage, variations in sorption ratio in humic acid fraction was very small, and the influence of original concentration of phenanthrene was slight ; while for humin fraction, the sorption ratio of phenanthrene at lower initial concentration was significantly higher than at higher one, in addition, the sorption ratio showed a gradually increasing trend, indicated humin fraction as the main domain in charge of the slow sorption.

在慢吸附阶段，胡敏酸中菲的吸附比例变化很小，菲初始浓度的影响也不大；而对于胡敏素组份，低初始浓度条件下菲的吸附比例明显大于高初始浓度条件，并呈现逐步增加的趋势，表明胡敏素组份是慢吸附的主要发生域。

The observation of the CO2 concentration and hydrogeological temporal change in different sites and depths indicates:①The seasonal change in soil CO2 concentration can be reflected from the hydrochemistry of spring and soil water;② The intensity of corros...

对不同部位不同深度的土壤CO2体积分数进行了野外监测，并利用多参数自动记录仪监测了泉水的水化学，揭示了CO2体积分数的变化规律。

The white low-density powder of the the sodium salt of polyaspartic acid was got by dropping the hydrolyzable solution to wiscked high speedly carbinol which Consumption amount is about 3-6 times to the amount of solution, the powders density is about 0.35g/ml.4 Polyaspartic acid was characterized by NMR and IR.5 The scale inhibition behavior of polyaspartic acid was studied and result shows: The calcium carbonate inhibition rate is up to 99% at the dosages of 12.5mg/ Land when pH value is 9.0, Ca2+ concentration is 120mg/L and HCO3- concentration is 366mg/L.6 The primary design was put forward for industrialized production of PASP.

在此工艺下得到聚天冬氨酸钠粉术，外观为白色的轻质粉术，堆积密度0.35g／ml，不用进行脱色和粉碎。 4。用红外光谱和核磁共振谱图对聚天冬氨酸进行了表征。 5。对合成的聚天冬氨酸钠对CaCO_3的阻垢性能进行了研究。结果表明：在Ca~(2+)离子浓度120mg/L(以碳酸钙计300mg/L)，HCO_3~-离子浓度为366mg/L(以碳酸钙计600mgL)，PH值=9.0的条件下，阻垢剂浓度达到12.5mg/L时阻垢率可达99％。

The result of immobilization showed that hydrophile membranes were more advantageous than hydrophobe ones to act as immobilization carrier. Crosslinking organophosphorus hydrolase by glutaraldehyde on polyethersulfone membrane is a simple and practical immobilization method. An appropriate amount of bovine serum albumin and crosslinker is necessary to get a good result of immobilization. In the biodegradation of methyl-parathion through enzyme membrane reactor, the effect of immobilized enzyme amount, flow rate of peristaltic pump, pH of the feed, and the methyl-parathion concentration on biodegradation rate was studied. It was shown that the biodegradation rate increased with immobilized enzyme amount and substrate concentration. Biodegradation rate didn't increase when the folw rate of the peristaltic pump was larger than 7 ml/min.

然后，研究固定化酶降解甲基对硫磷，从不同材料的膜载体固定有机磷水解酶的比较中，发现亲水膜比疏水膜适合作固定化酶载体；在此基础上，将有机磷水解酶固定在聚醚砜微滤膜上，并制成酶膜生物反应器，用于降解甲基对硫磷；戊二醛化学交联法固定时，酶液与10%牛血清白蛋白溶液的比例在3：1~2：1，与交联剂的比例在7：2~7：4范围内，固定化效果较好，并发现牛血清白蛋白和膜载体有降低酶活损失的作用；将固定化的酶膜装于酶膜反应器降解甲基对硫磷，实验结果表明：反应器的降解速率与固定化酶量呈正比，也随底物浓度的增加而加快，当流速低时，降解速率随流速增大而加快，到7ml/min以上时，降解速率不随流速脑黾佣洌到獾淖畹团ǘ任？

In this study, the amount of ethylene and its key biosynthesis genes expression, typical allelochemical hydroxamic acid concentration and the key regulation genes (BX1 and BX9), as well as the dynamic expression and time of relevant defense key genes of secondary substance metabolism processes were compared in ethephon treatments of different concentration and duration.

为探明外源乙烯利对玉米化学防御作用诱导的浓度和时间效应，本文采用化学和分子生物学相结合的方法，研究了不同浓度乙烯利处理玉米后，叶片乙烯释放量及其合成调控关键基因ACS和ACO表达的变化，典型化感物质丁布的含量及其关键调控基因BX1和BX9表达的变化，以及其他调控次生代谢物的关键基因表达的时间动态。

If the ratio or the concentration of 2, 4-D was higher, the callus formed quickly, but it was hygrophanous, and easy to necrosis, conversely, if the ratio or the concentration of 2, 4-D was lower, the callus appeared very slowly or could not form, and adventitious root formed directly or indirectly.

比值较高（或2，4-D浓度较高）时愈伤组织出现的时间较早，但愈伤色泽不好，呈半透明水渍状，易于褐化死亡，而比值较低时，愈伤出现得很慢或不形成愈伤，且易于直接或再分化形成不定根；这些不定根长至1.5-2.0cm时就不生长，并逐渐褐化。

This effect was observed clearly at final concentration between 1 and 10μ mol/L after treating for 24 hours. We concluded that the possible mechanisms of hydroquinone bleaching hyperpigmented skin were through its inhibition of tyrosinase activity at lower concentration and its cytotoxicity at higher one.

提示18α-甘草酸双胺盐、熊果苷的皮肤脱色作用机制与氢醌可能不同，后者低浓度时以抑制酪酸酶活性为主，高浓度时主要是细胞毒，且细胞早期的损伤部位可能发生在树状突。18α-甘草酸双胺盐能否成为一种无细胞毒酪氨酸酶抑制型皮肤脱色剂有待进一步临床加以验证。

MIPC was photocatalytically transformed to 3,4-dihydroxyl hypnone, 2-iso-butyl phenol and acetic acid, and mineralized ultimately in oxygenated TiO2 slurries. The photocatalytic degradation processed according to first order kinetics with the apparent rate constant depending on initial concentration, light intensity and the amount of catalyst. The amount of catalyst had an optimum value (0.5g/L). The apparent rate was inversely proportional to square root of the initial concentration approximately.

MIPC能被光催化转化成3，4-二羟基苯乙酮、2-异丁基苯酚和乙酸等产物并最终被矿化，MIPC的光催化反应过程符合一级动力学规律，其表观速率常数与MIPC的起始浓度、TiO2量和光强等因素有关，MIPC降解的反应速率与入射光强成正比，与MIPC初始浓度的平方根成反比。

For rivers with lower concentration of suspended sediment, effect of concentration on settling velocity is inapparent.

对于含沙浓度较低的河流，浓度对沉速的影响不显著。

In view of the low ore grade and recovery of the flotation concentration ,improving grinding fineness,promoting the concentration grade of copper 1.94% and the recovery of copper 3.32%,it can increate copper morn than 540t and the profits morn than 18,000,000 RMB,we achieved strikingly economic profits.

针对该矿浮选精矿品位及回收率偏低的现实，通过提高磨矿细度，铜精矿品位提高1.94%，铜回收率提高3.32%，每年多回收铜540t，增加利润1800多万元，取得了很好的经济效益。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。