查询词典 concentration determination

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。

This paper discusses the analysis of non-metal elements by following ways:Determination of P,S and Si by IC P-AES;Determination of Cl,P and S by IC ;Determination of trace As by polarograph and HG-AFS;Determination of Se by IC P-AES and fluorometry;Determination of F,Cl and I by GB.

本文论述了川附子非金属元素的分析：用ICP—AES法测定S、P和Si；离子色谱法测定Cl、S、P；极谱法和HG-AFS法测定痕量砷；ICP-AES和荧光法测定硒；GB法测定氯、氟和碘。

By synthetically analysizing the physical and chemical properties of all components and particle size, the content of F2641 in the JOB-iC is determined by gravimetric analysis after F2641 is seperated from HMX,TATB and PNP through ? alkali reflux. Determination conditions is set as follows the sample is boilingly refluxed for six hour in a constant temperature bath after adding lOOm! 8.0 ?? 0.1% NaOH. The solvent DMF saturated by TATB is used for extracting HMX,F21 and PNP from the sample and TATB is seperated by crucible filter G4. The mass precent of TATB is determined by extraction fractionation. The mass percent of PNP is measured by multiwavlength linear regression ultraviolet spectrophotometry. The testing conditions are set as follows:multiwavlength constitution: X=267nxn, 275nm, 283nm, 29mm, 299nm,the application scope of the Lambert-Beer law: the concentration of PNP is O.005?0.O25mgIml, the concentration of HMX is 0.060.3Omg/ml,absorption coefficents of PNP and HMX are solved by the slope of linear regression curve of absorbency- concentration of standard solution of PNP and HMIX for measuring wavelengthes,on the basis of the Lanibert-Beer law and absorbancy additivity principle, the slope of linear regression curve of A/E(1) and E1 of PNP and HMX solution is regarded as the concentration of PNP in the solution.

根据传爆药中各组分的物理、化学性质及主体炸药的粒度大小，进行综合分析，确定了采用碱回流重量法测定JOB-1C 中F_(2641)的含量，测定条件：加入100ml浓度为8.0±0.1％的氢氧化钠，在恒温水浴中煮沸回流6h；采用溶剂萃取法测定JOB-1C中TATB的含量，选择TATB饱和的二甲基甲酰胺为萃取溶剂，用G4坩埚式过虑器进行萃取分离；采用多波长线性回归紫外分光光度法测定JOB-1C中PNP的含量，通过实验确定了多波长组合：λ=267nm，275nm，283nm，291nm，299nm；朗波—比耳定律的适用范围为PNP浓度：0.005～0.025mg/ml，HMX浓度：0.06～0.30mg/ml；在测定波长下，对PNP、HMX标准溶液的吸光度—浓度进行线性回归，由回归曲线的斜率得出PNP、HMX的吸收系数；根据朗波—比耳定律和吸光度加和性原理，在测定波长下，对PNP、HMX 两组分混合溶液A_i/E_HMX(i与E_PNP(i/E_HMX(i进行线性回归，回归曲线的斜率即为混合溶液中PNP的浓度。

The reaction mechanism between nickel ion and butynediols in the electroless plating process was analyzed. The results show that the change of BOZ concentration is a quasi first-order reaction, the change of the nickel ion concentration is related to the BOZ density, and this change belongs to a higher order reaction. The reaction rate equation was determined as dC/dt=-8.585×10^(-4)+1.188×10^(-4)t-4.64×10^(-6)t^2+5.8×10^(-8)t^3-2.3×10^(-11)t^4. The activation energy of this process decreases as temperature increases, and it decreases with the BOZ concentration as 64-423 mg/L, it increases with the BOZ concentration as 123~240 mg/L. The S value is positively correlated to temperature, when the temperature is 80℃, the reaction rate and S value are the largest; while when the temperature is above 80℃ and BOZ concentration is over 160 mg/L, S value and the reaction rate decrease gradually.

结果表明，镀液中BOZ浓度的变化是准一级反应，镍离子的浓度变化与BOZ的浓度有关，属多级反应，其反应速率方程为dC/dt=-8.585×10^(-4)+1.188×10^(-4)t-4.64×10^(-6)t^2+5.8×10^(-8)t^3-2.3×10^(-11)t^4，反应体系的活化能E随温度的升高而减少，随BOZ浓度的变化而变化：当BOZ浓度在64~123mg/L时，E线性减少；在123~240mg/L时E线性增加。S随温度的升高而增加，当温度达到80℃时S值最大，反应速度最大；当温度超过80℃，BOZ浓度大于160mg/L时，蝎的值逐渐减少，反应速度降低。

The research results indicated that the best base was KOH, the best acid was H3PO4 and their neutralizing products were the necessary nutrients for foliar fertilizer; 12.4 L of foliar fertilizer were obtained in per kg of shrimp offal, chitin was obtained in 13.8% yield, crude protein was obtained in 23.2% yield using this method; This multifuctional foliar fertilizer was an abundant nutritional multifunctional foliar fertilizer which contained 15 kinds of amino acids, shimp cephalin, astacein and many trace elements. The concentration of calcium was 38.9 mg/L, the concentration of magnesium was 55.4 mg/L, the concentration of potassium was 20.0 g/L, the concentration of nitrogen was 4.5 g/L and the concentration of phosphorus was

研究结果表明：(1)处理虾下脚料的最佳碱是KOH，最佳酸是H3PO4，其中和产物是叶面肥必需的营养素；(2)本工艺不仅每Kg虾下脚料可制备虾叶面肥12.4L，而且可回收13.8％甲壳素和23.2％粗蛋白质；(3)经分析测定虾叶面肥中，含钙(Ca2+)38.9 mg/L，含镁(Mg2+)55.4 mg/L，含钾20.0 g/L，含氮4.5 g/L，含磷 78.9 g/L，还含有15种氨基酸及虾脑磷脂、虾红素及多种微量元素等，是一种营养丰富的多功能叶面肥。

In leaves,the concentration of Cd and Cu been up to 168.6μg·g~(-1) and 30.1μg·g~(-1),while in roots, they have been to 610.9μg·g~(-1) and 384.6μg·g~(-1).In these concentration compages,the leaves could accumulate Cd at a high rate,Cd50mg·g~(-1) Cu50 mg·g~(-1),Cd80mg·g~(-1) Cu30 mg·g~(-1),Cd80mg·g~(-1) Cu50 mg·g~(-1).At the concentration of Cd50mg·g~(-1) Cu50 mg·g~(-1), Iris pseudacorus L. could accumulate Cd and Cu at a high rate:inleaves,Cd82.908μg·g~(-1), Cu30.722μg·g~(-1),in roots, Cd266.181μg·g~(-1), Cu395.83μg·g~(-1),and at this concentration the plant could grow well, the dry weight of leaves and roots of it were 64.3% and 81.1% of the concentration compage Cd0mg·g~(-1 Cu50 mg·g~(-1)s.

研究表明，①黄菖蒲对Cd、Cu均有较强的吸收积累能力，其中对Cd的吸收积累能力相对大于Cu：地上部Cd、Cu含量最高分别达168.6μg·g~(-1)和30.1μg·g~(-1)，根部Cd、Cu含量最高分别达610.9μg·g~(-1)和384.6μg·g~(-1)；黄菖蒲地上部分Cd积累量均随处理浓度的升高而增加，特别在处理Cd50mg·g~(-1) Cu50mg·g~(-1)组合胁迫下，黄菖蒲对Cd、Cu的积累量为：叶的Cd含量为82.908μg·g~(-1)，Cu为30.722μg·g~(-1)；根的Cd含量为266.181μg·g~(-1)，Cu395.83μg·g~(-1)，且生长良好，叶和根的干重分别为处理Cd0mg·g~(-1) Cu50 mg·g~(-1)的64.3％和81.1％。

Objective To explore the effect of high serum concentration of bile acids on energy metabolism of liver.Methods Bile acids were continously infused into the Wistar rats to simulate the serum concentration change of patients with obsturctive jaundice.Serum bile acids concentration,arterial blood ketone body ratio and energy charge of liver were determined.Results Aterial blood ketone body ratio and energy charge of liver decreased with the increase of serum bile acids concentration.Conclusion High serum concentration of bile acids plays an important role in hepatic fumction injury caused by biliary obstruction.

目的 探讨高胆汁酸血症单一因素对肝脏能量代谢的影响方法经Wistar大鼠颈内静脉持续给予外源性胆汁酸，升高其外周血清中胆汁酸浓度，模拟阻塞性黄疸患者外周血清中胆汁酸的变化规律，观察腹腔动脉血酮体比值及肝组织能荷变化，时间一周结果随外周血清中胆汁酸浓度的升高，腹腔动脉血酮体比值、肝组织能荷均呈进行性下降结论高胆汁酸血症时肝脏能量代谢受损，表明在阻塞性黄疸患者肝功能损害中高胆汁酸血症起了重要作用

1.To study the expression of in the different glucose concentration with the time changing. 2.To study the effect of different concentration of Hepatocyte Growth Factor on the Integrin-linked kinase in protein and mRNA level by Mesangial Cells in high concentration (25 mmol/L) of glucose. 3.To study the effect of different concentration of HGF on the Fibronectin'secretary by Mesangial Cells. 4.To study latent therapeutic action and possible mechanism of HGF on the glomeruler sclerosis. The difference of ILK's experession on mRNA level in different concentration of glucose and HGF are detected by means of revers transcription-polymerase chain reaction,and by means of immunohistochemistry to detect their difference in protein level;the effection of HGF to the FN's secretary in high glucose are detected by means of enzyme linked innunosorbent assay.

1探讨在不同的血糖浓度下大鼠肾小球系膜细胞中ILK伴随时间变化在蛋白和mRNA水平表达的差异 2探讨不同浓度的HGF对高糖环境下(25mmol/L)大鼠肾小球系膜细胞中ILK在蛋白和mRNA水平表达的影响 3探讨不同浓度的HGF对高糖环境下大鼠肾小球系膜细胞的FN的分泌的影响 4初步探讨HGF对肾小球硬化的潜在的治疗作用及其可能机制采用RT-PCR的方法分析在不同血糖浓度和不同HGF浓度下大鼠肾小球系膜细胞中ILK在mRNA水平表达的差异；采用免疫组织化学的方法直观的观察它们在蛋白水平表达的差异；采用ELISA法分析不同浓度的HGF对高糖环境下大鼠肾小球系膜细胞的FN的分泌的影响。

And then the two different turfgrass seed germination tests conducted, results show that: 0.1 percent concentration of hydrogen peroxide concentration of 0.01% of the "Bi-care" and the concentration of 0.29 percent for the "God LU Hong Lu," The three kinds of reagents soaking treatment can significantly improve the wild Pennisetum and Eragrostis seed germination and growth of 0.10 percent by the concentration of the soaking H2O2 solution, then 0.29% concentration of the "God LU Hong Lu" after soaking solution, wild Pennisetum Eragrostis seeds and seed germination energy, germination percentage, germination index, root length and were significantly higher than control to deal with the seeds, but also to varying degrees higher than the other chemical reagents used to deal with the seeds, rapid germination and tidy.

然后对两种草坪草不同的种子处理进行了发芽试验，结果表明：浓度为0.1%的过氧化氢、浓度为0.01%的&碧护&和浓度为0.29%的&鲁虹神露&这三种试剂浸种处理能显著提高野生狼尾草和大画眉草种子的萌发和生长，经浓度为0.10%的H2O2溶液浸种，再经浓度为0.29%的&鲁虹神露&溶液浸种处理后，野生狼尾草种子和大画眉草种子的发芽势、发芽率、发芽指数、根长和芽长均显著高于空白对照处理的种子，也不同程度的高于用其他化学试剂处理的种子，发芽快而整齐。

The results manifest that the concentration of glycocholic acid has satisfactory linear correlation whith peak area, regression equation: Y= 39579X + 57823,R2=0.9984;The lowest detected concentration is 0.02μg/mL with S/N=3 ; Average recovery rate is 98.49%; RSD为0.52%～2.00%in day, RSD为0.74%～4.98%between days;The average recovery rate is 99.35%, RSD is 2.24% in the first team, and it is 100.87%, RSD is 4.73% in the second team at the stability test. When the concentration of glycocholic acid was detected in the liver, kidney and brain tissue, corresponding tissue concentration was calculated by preparing the standard curve with the glycocholic acid standard preparation in vitro, but the result can only reflect the relative chang law of the concentration of glycocholic acid in tissue but not in real tissue. The result of tissue stability experiment is consistent with that of the serum experiment.

结果表明，在0.15625～10.0μg/ml范围内血清中甘氨胆酸浓度与峰面积呈良好的线性关系，回归方程Y= 39579X + 57823，R2=0.9984；以信噪比S/N=3为标准，最低检测浓度为0.02μg/ml；平均回收率为98.49%；日内RSD为0.52%～2.00%，日间RSD为0.74%～4.98%；稳定性试验第一组的平均含量为99.35%，RSD为2.24%，第二组的平均含量为100.87%，RSD为4.73%；测定了肝、肾、脑组织中甘氨胆酸含量，采用体外甘氨胆酸标准品制备标准曲线的方法计算了相应的组织浓度，其结果仅反映组织中甘氨胆酸浓度的相对变化规律，不能体现真正的组织浓度值，但对组织样品的稳定性进行了较细致的考察，其结果和血样结果基本一致。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。