浓度测定

Objective To investigate bone nutritional status of neonates and their mothers as well as the correlation between them by estimating the concentrations of 25-D3, calcium and phosphorus in maternal blood and cord blood at birth, and by measuring the bone speed of sound of neonates and their mothers with quantitative ultrasound within 3 days after birth. Methods The concentrations of 25-D3, calcium and phosphorus in the serum were estimated both from 32 pregnant women who had a term delivery and from the umbilical cord at birth.

摘 要：目的通过对产妇及其新生儿在分娩当天进行血25-D3、血钙和血磷浓度的测定以及在产后3 d内采用骨定量超声仪对母儿进行骨超声波速度(speed of sound，SOS)的测量来评价母儿的骨营养状况和两者的相关性。

Methods Two lines of human pancreatic carcinoma cell P3 and SW1990 were studied to investigate the killing role of PDT with hematoporphyrin derivative as photosensitizer and sodium lamp as light source. The cultured cells were treated with serial concentrations of HPD followed by irradiation of different dosages of visible light, then MTT colorometric assay was applied to measure the relative inhibitory rate of PDT for the cells.

以2株人胰腺癌细胞系P3和SW1990为研究对象，采用血卟啉衍生物作为光敏剂，用高压钠灯（功率密度25 mW/cm2为光源，以系列浓度的HPD经不同剂量的光照后，用MTT法测定PDT对胰腺癌细胞的相对抑制率。

Sodium arsenite group and sodium arsenate group were made by 300 mg/L per day of sodium arsenite and sodium arsenate respectively. The mice were sacrificed after 10 months for liver function and pathologic examination. The expression of MMp-8, TIMP-2, Col-Ⅰ、Col-Ⅲ mRNA were detected with real time flourescence quantitative PCR. The result was controlled with 18s.

亚砷酸钠组和砷酸钠组给予普通饲料和砷溶液。10个月后处死小鼠，血清进行肝功能检测；苏木素－伊红染色部分肝组织；Trizol-酚－氯仿一步法提取小鼠肝组织总RNA，紫外分光光度法测定总RNA浓度及纯度，实时荧光定量PCR法测肝组织中MMP-8、MMP-2、Col-Ⅰ、Col-Ⅲ mRNA的表达，以18S基因作为质控。

In different concentrations of sodium carbonate,alum,salt or sucrose,the viscosity curve of waxy rice starch was measured by Brabender viacometer to study the effects of these factors on starch paste properties.

采用Brabender黏度仪，测定糯米淀粉糊在不同浓度的碱面、明矾、食盐和蔗糖条件下的黏度曲线，研究了这些因素对糯米淀粉糊化特性的影响。

The viscosity curve of different brands of potato starch paste and potato starch paste under different concentrations of starch milk, sodium chloride, sucrose, alum, phosphate, konjac giucomannan and pH was measured by Viscograph - E type Brabender viscometer.

采用Viscograph-E型Brabender黏度仪，测定了不同品牌马铃薯淀粉糊及马铃薯淀粉糊在不同质量浓度、pH、食盐、蔗糖、明矾、磷酸盐和魔芋葡甘露聚糖条件下的黏度曲线，研究了淀粉糊黏度性质及其影响因素。

Methods: The absorption of tinidazole in small intestine and colon of rats was investigated using in situ single-pass perfusion method and the drug content was measured by HPLC. The effects of drug concentration on the intestinal absorption were investigated.

采用大鼠在体单向灌流法，利用HPLC法测定替硝唑的含量，研究替硝唑在小肠和结肠的吸收情况，并考查药物浓度对替硝唑吸收的影响。

LabVIEW 7.0 Express-based program for determining second-order reaction rate constant by electric conductivity is designed. It can process the data with both equality and inequality of initial concentrations, avoiding complex process of manual processing data and personal error produced in data processing by handwork and improving veracity and repeatability of the experiment results.

研制了基于LabVIEw 7.0 Express的处理电导法测定二级反应速率常数实验数据程序，对反应物初始浓度相等和不等条件下均可处理，避免了人工处理数据的复杂繁琐过程及人工处理过程中的人为误差，提高了实验结果的准确性和重现性。

This paper discusses the operation procedures in using Flash to simulate medical chemistry experiment,"determining the content of sodium citrate injection with ion-exchange technique": movement animation,shape-shift animation,key-frame animation,word processing,and sound disposition.

通过应用Flash模拟医用化学实验-离子交换法，测定枸橼酸钠注射液浓度的制作过程，介绍了运动动画、形变动画、关键帧动画和文字处理及声音配置等操作步骤。

Hemoglobin, lipidemia and low concentration vitamin C less than 0.3 g/L did not significantly interfere with the detection.

溶血、脂血、低浓度维生素 C(小于 0 。3g/ L)对测定无明显干扰。

The titrant is a mixture of EDTA and sodium fluoride, both mercury film electrode and fluorinion selective electrode are inserted in the titration solution. In a process of titration, both the added volume of titrant and the concentration of mercury ion at each titration point can be obtained simultaneously from the potentials of two electrodes, and then the concentration of each component in the alloy can be obtained from the titration curves by multivariate calibration.

用ED-TA与氟化钠的混合溶液作为滴定剂，被滴定液中同时插入了汞膜电极和氟离子选择电极，在滴定过程中的任一滴定点，溶液中汞离子的浓度和滴定剂的加入体积可由两个电极的电位测定值同时获得，从而可应用多元校正法由相应的滴定曲线求得混合金属中每一种组分的含量。

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。