浓度

The abscissa of the concentration convergence equals to the changes in the desorbed free energy of 1mol pure organic solvent, while that of carbon number convergence equals to the negative free energy change of its end group of the homologue, when the concentration of organic solvent is one tenth in the mobile phase.

浓度收敛点的横坐标是1mol纯溶剂的解吸附自由能；而碳数收敛点的横坐标为当流动相中有机溶剂的浓度为纯有机溶剂浓度的十分之一时的同系物端基的保留自由能的负值。

The results show that the optimum mole percent of Al3+ to Yb3+ is 9—11 for high concentration of ytterbium-doped silica-based fiber at which low concentration quenching probability, high absorption coefficient and proper numerical aperture can be obtained.

揭示出在高掺Yb3+的石英基光纤中，共掺Al3+的摩尔浓度为Yb3+摩尔浓度的9—11倍时既可以减小Yb3+的浓度猝灭概率，又可以获得高吸收系数，同时还可更好地满足数值孔径的要求的结论。

So we researched the relationship between the acraldehyde contamination and cooking activity. We choose four time, 9:00 and 15:00 the cooking activity is very few, so the contamination is low, but 11:30 and 17:30 the contamination is very high, this concentration is 2.6 times an much as the front one.

检测结果表明丙烯醛的浓度和烹饪活动的多少有密切的关系。9：00和15：00食堂内烹饪活动比较少，丙烯醛的浓度明显降低，而11：30和17：30是两个就餐高峰，在这两个时间段内餐厅内的丙烯醛浓度明显升高。

The transmission spectrum and the absorption spectrum of alcohol shows that the characteristic absorption peak shifts with alcoholicity due to the molecular configuration. A multiple regression model was established based on the position, the intensity and the shape of the characteristic absorption peak, and used to detect alcoholicity. The predictive results show a linear relationship between predicted values and real values in sonic range, and can be used as a means to detect the alcoholicity.

通过对酒精透射光谱和吸收光谱的研究发现，其特征吸收峰随浓度不同发生漂移，从分子结构能级角度对其做了定性解释；根据部分稳定的特征吸收峰处不同波长点的吸光度，利用最小二乘法建立了多元线性回归模型，运用此模型实现了根据特征吸收峰波长的位置、强度、形状来预测酒精浓度，测定数据与样品浓度之间在一定范围呈良好的线性关系。

Results: The imprecision of six diluent concentrations in duplicate was 2.68%, the best fit model was the cubic equation. The deviaton from linearity of the first concentration was 42.3%, exceeding the 5% clinical allowable error. DLs of the other concentratons were within limit.

结果：六个稀释浓度样本重复测定的不精密度为2.68%，三次多项式为最适拟合模型，第一个稀释浓度的非线性程度达到42.3%，超过5%的允许范围，为临床不可接受，其它五个稀释浓度的线性偏离均在允许范围内。

At low HNO3 concentration and dilution factor above 2, 0.1 mol/L DCH18C6/1-octanol extracts very little americium,plutonium and uranium.The distribution ratios of Am、Pu and U increase with the increase of HNO3 concentration in aqueous phase,and decrease with increasing of dilution factor of HLLW.The distribution ratio of extraction of Pu increases with the increase of extractant concentration.

研究结果表明，在低硝酸浓度和较大稀释倍数情况下，DCH18C6对镅、钚、铀的萃取分配比都比较小，并随着水相硝酸浓度的增大而增大，随着模拟高放废液稀释倍数的增大而减小，提高萃取剂浓度会增大四价钚的萃取。

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。

Our results revealed that TGF-β1 at 1 ng/ml induced collagen deposition of HSC-T6 cells (145 ± 5 % of controls), and pre-exposure of cells to curcumin (1.25~10 μM) inhibited the stimulatory effect of TGF-β1 in a concentration-dependent manner. Curcumin (10 μM) significantly reduced the TGF-β1-induced collagen deposition (97 ± 7 % of controls) without cytotoxicity in the MTT assay .

我们的结果显示，1 ng/ml 浓度的TGF-β1可以有效地增加星状细胞对胶原蛋白的制造(达控制组的145 ± 5 %)，而在预先投予浓度范围为1.25~10 μM的姜黄素后可对TGF-β1引起的刺激反应产生浓度效应的抑制作用；姜黄素在浓度10 μM下可明显地抑制TGF-β1引起的胶原蛋白沉积(达控制组的97 ± 7 %)而不致产生细胞毒性。

Oxalic acid loading substantially stimulated soil P release from A1 horizon, showing a linear relationship; but its effect on B horizon soil was relatively negligible, especially at low oxalic acid concentrations mmol L^(-1. Oxalate solutions 0.5~20.0 mmol L^(-1 oxalic acid adjusted to pH 5.16 with 10.0 mmol L^(-1) NaOH had a much higher (1.51~2.98 times) soil-P-release effect than oxalic acid solution the same in oxalate concentration. Therefore, the mechanism of oxalic acid/oxalate triggering release of soil phosphorus is assumed to be dominated by ligand-exchange or complexing reactions of oxalate anionC2O(superscript 2- subscript 4 but not simply acid-dissolving effect. The effect of oxalate anion on soil phosphorus release was found to be somewhat cumulative, i.e. the amount of P released was primarily controlled by the cumulative oxalate loading rate, relatively independent of the manner of oxalate addition (one-time or sequential).

结果表明，草酸能显著促进暗棕壤A层磷的释放，土壤磷溶出量随草酸溶液浓度升高而线性增加；但对B层土壤磷的释放效应相对较弱，草酸浓度低於5mmolL^(-1)时B层磷的释放不明显。pH5.16草酸钠溶液比相同浓度的草酸溶液具有更高的解磷效率，在设置二者浓度为0.5~20.0mmolL^(-1)时，前者的解磷量是后者的1.51~2.98倍，推断草酸盐溶液或凋落物淋洗液中草酸类物质促进暗棕壤磷释放的主要机理在於草酸阴离子C2O(上标 2-下标 4配位反应。

Mmol/L to juvenile Japanese sea bass, and 75.86, 63.46, 56.42 mmol/L to black rockfish. When pH is steady at 8.40 + 0.10, the 24-, 48-, 96-hour LC50 of Alk are 72. 79, 65. 28, 57. 92 mmol/L to Japanese sea bass, and 69. 47, 59. 37, 51. 96mmol/L to black rockfish. It is obvious that the toxicity of Alk to fish increases with the progressive increase of Alk or time when pH is at a constant level.3. According to analysis of variance of orthogonal test, pH and Alk have signification effects on the mortality rate of black rockfish.

pH在正常养殖范围时，通过碱度对海水鱼类鲈鱼、黑鲪的急性毒性试验，得到pH=8.10±0.10时，碱度对鲈鱼稚鱼(体长1.6～2.2cm)24、48、96h的半致死值为60.88、44.36、36.06mmol／L，安全浓度为7.07mmol／L；pH=8.05±0.10时，碱度对黑鲳幼鱼24、48、96h的半致死值为75.86、63.46、56.42mmol／L，安全浓度为13.32mmol／L.pH=8.40±0.10时，碱度对鲈鱼幼鱼24、48、96小时的半致死值为72.79、65.28、57.92mmol／L，安全浓度为15.76mmol／L；对黑鲪幼鱼24、48、96h的半致死值为69.47、59.37、51.96mmol／L，安全浓度13.01mmol／L。

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。