实验室方法

Iminodiacetic acid and aspartic acid reacting with t-butyloxycarbonyl anhydride in the basic solvent system of 1,4-dioxane-water gave better yields than those from conventional t-BuOH/H 2O system method,while glutamic acid in both solvent systems of 1,4-dioxane-water and tetrahydrofuran-water also gave better yield.

其中Boc酐法反应条件温和，操作简便，试剂易得且经济，是实验室制备Boc保护的氨基酸的常用方法。常规Boc酐法多采用叔丁醇水和四氢呋喃水的溶剂体系。我们用常规Boc酐法制备Boc 亚氨基二乙酸时，多次重复，收率总是低于 5 0 %，对天冬氨酸和谷氨酸进行Boc化时也有类似情况。

It is impractical in laboratory calibration with this infinite single wire which can be replaced by an N-turn coil. According to the equal ampere-turn principle, it is feasible to calibrate the high current range of the clamp ammeters with low current. However, the calibration coil brings new uncertainty into the calibration.

根据等安匝原理，实验室常用多匝校验线圈代替单根导线对钳型表进行校准，如此只需小电流即可对钳形表大电流量程进行校准，但是校验线圈这种校准方法会引入新的测量不确定度。

Fyn null mice display reduced adiposity associated with increased fatty acid oxidation, energy expenditure, and activation of the AMP-dependent protein kinase in skeletal muscle and adipose tissue.

这种新方法聚焦于一种间接控制&能量主开关&活动性的酶，这种酶叫Fyn激酶，如果给实验室老鼠注射抑制这种酶的化学物质，它们几乎马上开始燃烧更多脂肪。

To analyze the reliability and comparability of different hematology analyzers and to standardize the operation of a contrast test. Methods The carryover rate, precision, total precision and percentage of differences of hematological analyzers were evaluated and differences of items in whole blood were compared by detecting 20 anticoagulant fresh blood samples based on the documents of ICSH and NCCLS. Every 3 blood samples of highvalue, middlevalue and lowvalue were detected by hematological analyzers everyday for 7 days.

方法参照国际血液学标准化委员会及美国临床实验室标准化委员会文件，在仪器正常运行的情况下，评价各比对仪器的携带污染率、精密度和总精密度、差异百分率；分析比较20份抗凝新鲜全血中各项指标在不同血细胞分析仪之间的差异；每日取高、中、低3份新鲜血，在各仪器上平行检测，连续比对7日，观察各项指标与参考样机之间的相关性；分析比较仪器分类与手工分类的相关性；通过直线回归方程计算相对偏差，估计每台仪器各检测指标的试验误差。

The accuracy was verified by determinationof WHO international standard haemiglobincyanide.The preparation of candidate haemiglobincyanide reference material was mainlyreferred to ICSH document. Then the candidate haemiglobincyanide referencematerial was certificated according to ISO Guide 35, including homogeneity study,stability study and Characterization.

参考ICSH国际标准物质的制备方法制备HiCN候选标准物质300瓶；按照ISO Guide35的要求评价候选标准物质的均匀性、稳定性，在均匀性、稳定性合乎要求的前提下由多个实验室使用多台经过严格校准的仪器为HiCN候选标准物质定值。

Through comparing with the tradition and the method of research of two labs, the paper gives the reason why the Joliot-Curie couple missed the discovery.

笔者从两个实验室的传统、研究方法背景等角度对约里奥-居里与查德威克进行比较，分析约里奥-居里夫妇错失中子发现的原因。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。