浓度

Experimental results showed that, in this process, the optimal pH of the shortcut nitrification was 8.0～8.5; when the pH was less than 6,the nitrification is completely inhibited; when the pH was 6～7, at the end of aeration, the Nitrobacteria become the dominant bacteria because of the dropping of the free ammonia concentration. It is known to all, the activity of the Nitrobacteria and Nitrosomonas was affected by FA concentration, so nitrification was affected by FA concentration. According to the author's research results, the FA concentration which inhibit the Nitrobacteria was below 1.0mg/L,which inhibit the Nitrosomonas was above 10mg/L.

实验研究结果表明：本工艺中，短程硝化反应的最佳pH值在8.0～8.5之间，当pH小于6时，整个硝化反应都会受到抑制，当pH在6～7之间时，随着游离氨浓度的降低，在曝气后期，硝化菌将会占据优势；FA浓度对短程硝化反应的影响是通过对亚硝酸菌和硝酸菌的抑制来实现的，在本研究条件下，游离氨对亚硝酸菌的抑制浓度在10mg/L以上，对硝酸菌的抑制浓度在1.0mg/L以下；温度对短程硝化反应的影响是双重的，既影响微生物的生理活性，又影响FA浓度。

It was revealed that the balanced DO concentration appeared soon after the reaction stage starting,and DO level rose quickly in large range when COD was degraded to its nondegradation concentration under that condition,no matter that change the aeration rate or the MLSS concentration in large range,or change the initial COD concentration gradually or suddenly in the various experimental conditions.

结果表明，无论使曝气量或初始污泥浓度大幅度变化，还是逐渐或突然改变初始有机物浓度等各种试验条件，都会在反应阶段开始不久出现所谓平衡DO浓度现象；当有机物达到其难降解浓度时DO浓度迅速地大幅度升高。

He experiment results indicate that (1) The extract of Rubia Cordifolia L has the effects of anti-proliferation and inducing APO;(2) Whenadministrating with 5-fu, the extract of Rubia Cordifolia L obviously enhanced the effects of anti-proliferation and inducing APO of 5-fu;(3) The basement of molecular biology of the extract of Rubia Cordifolia L for inducing APO of MGC-803 cells is correlated with inhibiting the expression of bcl-2 of anti-apoptosis gene.

UNEL法与PCNA的免疫细胞化学法的结果：0.2、0.4、0.8、1.0mg/ml浓度的茜草提取物与2、4、8、16μg/ml浓度的5-Fu，分别诱导细胞凋亡和抑制细胞增殖，表现出浓度、时间依赖性关系，除个别浓度与个别时间之间无显著性差异（P＞0.05）外，不同浓度与不同作用时间之间均有显著性差异（P＜0.05或P＜0.01），并且两种药物联合使用时，MGC-803细胞的APO%显著提高，降低PCNA的阳性表达率（P＜0.05或P＜0.01）。

The lowest surface tension of N_xB solution was better at 25℃, and lowest surface tension would down with carbon . cmc( critical micelle concentration) and γ_ in N_(12)B are 4.1 × 10~(-4)mol/L, 24.5 mN.m~(-1),what was smaller than LAS . The cmc of N_(12)B- NaCl are down with NaCl up.The surface tension and cmc of N_(12)B and N_(16)B are higher than that of N_(12)OB and N_(16)OB because of hydrophilic group ,but that of N_(12)B is lower than that of N_(16)B because of hydrophobic group .5. The borate structure and semipolar bond were studied in different pH by infrared spectrum .It indicated that N_xB and N_xOB have not semipolar bond at pH

4、25℃，N_xB系列都有较低的表面张力，并随碳原子数的增加而最低表面张力下降。N_(12)B比同碳原子数的十二烷基苯磺酸钠的最低表面张力34.5mN／m低，且临界胶束浓度为4.1×10~(-5)mol／L，也比LAS低，且随着NaCl浓度的增加而略有下降，比较N_(12)B和N_(16)B，由于C_(16)疏水基的异构体使N_(12)B的临界胶束浓度和临界胶束浓度时的表面张力γ_(cmc都低，由于增加了亲水基团使得N_(12)OB和N_(16)OB的表面张力和临界胶束浓度都要高于N_(12)B和N_(16)B。

The effects of solution\'s pH value, mol ratio between phenyl aldehyde and L-Arginine, concentrations of sodium chloride, ammonia chloride andL-Lystine, initial concentration of L-Arginine on precipitation rate of a -tolylene arginine were investigated, the results indicated that phenyl aldehyde precipitation method\'s appropriate pH value was higher than 11, suitable mol ratio between phenyl aldehyde and L-Arginine was 1.25, initial concentration of L-Arginine was must higher than 15g/L, sodium chloride had little effect on precipitation rate, on the contrary, ammonia chloride and L-Lystine had great effect on it, both of them must be eliminated; At the same time, adsorption isotherm at 25 C of L-Lystine on anion exchange resin A was measured, the result showed that the maximal equilibrium adsorbance was 30mg/g, the influences of solution\'s pH value, temperature, concentration of chloride ion on adsorption of L-Lystine by anion exchange resin A were also studied, the results indicated that appropriate operational pH value was 0.5 0.2, the effect of temperature on adsorption ratio was little, process could be operated at room temperature, the concentration of chloride ion must be eliminated.

考察了溶液pH值、苯甲醛与L-精氨酸摩尔比、氯化钠与氯化铵浓度、L-赖氨酸浓度、L-精氨酸初始浓度对苯甲醛沉淀L-精氨酸的影响，结果表明，沉淀反应的适宜pH值大于11，苯甲醛与L-精氨酸的适宜摩尔比为1.25，(来源：Aa6BC论文网www.abclunwen.com)L-精氨酸适宜的初始浓度在15g/L以上，氯化钠的存在对沉淀率基本上没有影响，而氯化铵和L-赖氨酸的存在使沉淀率下降；同时测定了25℃时阴离子交换树脂A吸附L-赖氨酸的吸附等温线，表明其最大平衡吸附量为30mg/g，考察了溶液pH值、温度、氯离子浓度对阴离子交换树脂A吸附脱除L-赖氨酸的影响，结果显示从L-精氨酸和L-赖氨酸混合液中吸附分离出L-赖氨酸的适宜pH值为10.5±0.2，温度对L-赖氨酸吸附率影响不大，吸附过程可在室温下进行，氯离子的存在使L-赖氨酸的吸附率降低。

On the inhibition to mycelial growth, the 95% ethanol extract had significantly inhibition to P. ultimum, F. oxysporum f. sp cucumber, R. solani and B. cinerea, and at the top treatment concentration of 0.002 g/mL, the inhibition rate reached to 60.32% 58.50%, 55.89% and 55.17%, respectively; But the 95% ethanol extract almost had no inhibition to S. rolfsii, its rate was just 17.19% at 0.002 g/mL.③On the inhibition to sprouting, the 95% ethanol extract had significantly inhibition to B. cinerea, R. solani, F. oxysporum f. sp cucumber and P. ultimum, and at the top treatment concentration of 0.002 g/mL, the inhibition rate reached to 95.24%, 90.48%, 89.47% and 85.71%, respectively; and the rate would exceed 40% to four fungi mentioned above when their concentration was not lower to 0.005g/mL. The 95% ethanol extracthad infirm inhibition to S. rolfsii, its rate was just 43.48% at 0.002 g/mL.

在抑制菌丝生长方面，鱼腥草95%醇提物对豌豆根腐病菌、黄瓜枯萎病菌、马铃薯立枯丝核病菌和大白菜灰霉病菌均有良好的抑制作用，在最高处理浓度为0.002 g/mL时抑制率分别达到60.32%、58.50%、55.89%和55.17%；对辣椒白绢病菌几乎没有抑制作用，在最高处理浓度为0.002 g/mL时抑制率仅为17.19%；③在抑制孢子萌发方面，鱼腥草95%醇提物对大白菜灰霉病菌、马铃薯立枯丝核病菌、黄瓜枯萎病菌和豌豆根腐病菌抑制效果明显，在最高处理浓度为0.002 g/mL时的抑制率分别达到95.24%、90.48%、89.47%和85.71%，且在处理浓度不低于0.000 5 g/mL时对以上4种真菌孢子的抑制率超过40%；对辣椒白绢病菌抑制作用较弱，在最高处理浓度为0.002 g/mL时仅为43.48%。

The genomic DNA of Unio douglasiae, collected from Suya Lake, Henan Province, was used as template DNA to optimize the RAPD-PCR reaction conditions including the concentration of DNA template, random primer, dNTPs, Mg2+ and Taq DNA polymerase and the annealing temperature for thermal cycle.

以河南宿鸭湖圆顶珠蚌的基因组DNA为模板，对淡水蚌类RAPD反应体系中的模板DNA浓度、随机引物浓度、dNTPs浓度、Mg~(2+)浓度、Taq DNA聚合酶浓度和和热循环参数中的退火温度进行了优化。

A higher mean maximum ethanol concentration of 19.26% db was obtained at 850% wb moisture,whereas a mean ethanol of 18.10% db was produced at 77% wb pomace moisture.Mean ethanol concentrations during fermentation of 10.79 and 10.27% db,at biorcactor nixing speeds of 2 and 20 rpm,respectively,were significantly higher th...

其结果是含水量85%的苹果渣发酵获得的平均最大酒精浓度为19.26%，高于含水量77%的苹果渣(酒精浓度为18.10%)，搅拌速度为2，20转/分时获得酒精浓度分别为10.79%和10.27%，高于40转/分时的酒精浓度9.30%，且获得最大酒精浓度所需时间少。

The phosphorus removal experiment implies the increasing 100 mg/L MLSS concentrations can remove about 1 mg/L TP. The phosphorus removal efficiency can be improved by the increasing rate of MLSS concentrations. When everyday increasing rate of MLSS concentrations are about 500mg/L, the phosphorus removal efficiency would higher than 90%, effluent TP would be lower than 1 mg/L. When MLSS concentrations are fluctuating, effluent phosphorus would fluctuate correspondingly. Everyday the amount of discharging excess sludge can be prejudged by the amount of influent TP.

通过对反应器的除磷效果的研究，发现污泥浓度增长100 mg／L能去除将近1 mg／L TP；发现随着污泥浓度增长速率的增加，除磷效率相应提高；当污泥浓度的增长速率增加到每天500 mg／L时，磷的去除率将高于90％，并且出水TP浓度将低于1 mg／L；发现每天排放的剩余污泥量可以根据进水TP浓度来决定；发现最佳好氧与厌氧时间比T_是0.5；溶解氧冲击指数DO_I被首次提出，作为分析溶解氧DO影响的指标。

The concentration of PM10 was measured by the monitoring and meteorological experiments from February 2006 to December 2006, and the change law of PM10 concentration on daytime and every year have been got: PM10 concentration in the daytime in Nanjing reaches the supreme value in one day at 11 o'clock in the morning, but the low ebb of PM10 concentration from side to side at 16 o'clock in the afternoon; Spring and summer is to hit in one year the low-level period of PM10 concentration, but the festival PM10 concentration in autumn and winter presents higher level.

通过PM10浓度监测实验和气象监测实验，测定了2006年2月至2006年12月期间，南京城市PM10的背景浓度值，得到PM10日变化规律和年变化规律，南京白天PM10浓度在早上11时达到一天中最高值，而在下午16时左右为PM10浓度的低谷；春季和夏季是一年中PM10浓度低水平时段，而秋冬季节PM10浓度呈现较高的水平。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。