量滴

On the base of the brief description of the drive and control system of micro-fluid and the experimental setting of the technology of micro-injection, a novel process of the hydrophobe treating used to mend the characteristic of the inner and outer surface on micro-pipette is designed, which can improve greatly the injected effect and eliminate the disadvantage such as seepage or regurgitation during injection. The author puts forward the way of measuring the inside diameter of the micropipette. The program of measuring micro injection amount is designed. The original data of the micro injection experiment are explained and interpreted at last in the thesis.

在简要描述微流体驱动控制系统和微注射技术实验条件的基础上，设计了改善微针内外表面特性的疏水化处理工艺，消除了微喷射过程中的渗流、回流现象，改善了微注射过程中的流动特性，提高了微注射效果，得到了数字化微喷射的实验结果；提出了精确测量微针内径的折射率法；设计了纳升级以下的微液滴量的检测方案；最后，论文对微注射技术实验中的原始数据进行了分析。

The kinetics of iridium catalyzed oxidation of isobutyl alcohol by cerium in aqueous sulphuric acid medium has been investigated by titrimetric technique in the temperature range of 25~40℃.

在酸性介质中用氧化还原滴定法研究了鈰离子在痕量铱离子催化作用下，於25~40℃区间氧化异丁醇的反应动力学。

The result indicated that: the amount of the excess HF formed direct ratio to the yield of phosphorus pentafluoride and the optimum amount of the excess HF used is about 35%; the trickling rate of oleum shouldnt make the temperature of hexafluorophosphoric acid exceed 25 ℃ and the amount of oleum is 110% to 125% that of stoichiometry so that the content of phosphorus pentafluoride can be achieved 90%; the time and temperature of heating hexafluorophosphoric acid influenced both the yield and the content of phosphorus pentafluoride, and the optimum time should be about 30 minutes and the proper temperature was 148 to 153℃; when alcohol used asrefrigerant, the content of phosphorus pentafluoride was 94.03%, and the content can be up to 97.38%, provided that using liquid nitrogen as refrigerant.

通过实验发现，氟化氢用量与五氟化磷的产率成正比，最佳过量百分率宜在35％左右；发烟硫酸的滴加速度不能使中间产物温度大于25℃，发烟硫酸用量大于理论量10％～25％时，得到的五氟化磷纯度高于90％；六氟磷酸的加热温度对五氟化磷的产率和纯度均有影响，宜在148～153℃的范围内，加热时间应在30分钟左右；用工业酒精做冷凝介质得到的五氟化磷纯度最高只能到达94.03％，使用液氮做冷凝介质可以使五氟化磷的纯度达97.38％以上。

Expression level of rhGH could reach 250 mg/L culture solution by means of selecting components of original culture media, components of supplemental media, volume of supplemental media, the time of supplying supplemental media and supplying speed of supplemental media, secretion rhGH was found to represent 44%~54% of the total proteins in periplasm, and the fermentation time was reduced to 8 hrs.

通过对发酵培养基成分、补料成分、补料体积、补料时机和滴加流速的选择，分泌表达rhGH的量可达到250 mg/L，占周质蛋白的44%~54%，发酵周期缩短为8小时。

Expression level of rhGH could reach 250 mg/L culture solution by means of selecting components of original culture media, components of supplemental media, volume of supplemental media, the time of supplying supplemental media and supplying speed of supplemental media, secretion rhGH was found to represent 44%-54% of the total proteins in periplasm, and the fermentation time was reduced to 8 hrs.

通过对发酵培养基成分、补料成分、补料体积、补料时机和滴加流速的选择，分泌表达重组人生长激素的量可达到250mg／L，占周质蛋白的44％～54％，发酵周期缩短为8小时。

Soil surface charge was measured with the potentiometric back-titration technique, and its characteristics evaluated with the Multi-Langmuir model.

用返滴定技术测定土壤的可变电荷量，应用Muti-Langmuir模型评价土壤的表面电荷特性。

The methanol contents of carambola wine fermented from fresh and frozen carambola juice were 33 and 74 ppm respectively. The alcohol content, soluble solid, specificity gravity, pH and titrable acid are almost the same during the fermentation of carambola juice and puree, the methanol content of the must would increase as the fermentation progressing. The methanol content of the wine fermented from carambola juice and carambola puree were 74 and 256 ppm respectively, so the separation of the pulp from carambola puree can decrease the methanol content efficiently in carambola winemaking.

新鲜及冷冻杨桃汁经发酵后，甲醇含量分别为33及74 ppm，杨桃汁与杨桃泥在发酵期间其酒精度、可溶性固形物、比重、pH、可滴定酸的变化情形相似，而甲醇则随著发酵时间增加而增加，杨桃汁及杨桃泥所酿造之杨桃酒其甲醇量分别为74 及256 ppm，结果显示杨桃发酵前汁渣分离将可有效降低杨桃酿造酒中甲醇含量。

Objective:Evaluating the method of trace median tissue culture ineffective dose(trace TCID50) in determining the virucidal effect on the four commonly used disinfectants to poliovirus.

目的：评价微量组织培养半数感染量病毒滴定法（简称微量TCID50法）检测4种常用消毒剂对脊髓灰质炎病毒的灭活效果。

Methods The orthogonal design was used to study three factors including the amount of adding water,macerating time,distillating time.

采用了正交设计法考察土荆芥、水团花水蒸汽蒸馏加水量、浸泡时间及提取时间3个因素，以挥发油提取量为考核指标；滴制成的胶丸采用气相层析法进行主成分比较分析。

The composition of obtained PMN-PT have been analyzed by means of macro-quantity chemical analysis. The analyzed results of the Pb2+ concentration indicated that PbO in the PMN-PT seldom volatilized at 850℃. The PbO volatility loss could be up to 3.9% when sintered at 1200℃.

采用定量化学分析法对PMN-PT中的阳离子进行滴定分析。pb~(2+)的化学分析结果表明：在850℃下合成PMN-PT钙钛矿相时，氧化铅的挥发量极少。

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。