常用玻璃容量瓶容量测量结果不确定度评定

文章对50 mL玻璃容量瓶容量测定结果进行了不确定度评估的分析,识别了测量过程中不确定的来源,阐述了各个分量的产生,计算了测量不确定度.其研究结果为类似常用玻璃量器容量测量结果的不确定度评定提供了依据和借鉴.

玻璃保温瓶胆化学镀镍机理及工艺研究

探讨了玻璃保温瓶胆化学镀镍基本原理和施镀工艺,并概述了碱性除油、化学粗化、敏化、活化、还原等预镀工艺及酸性次磷酸钠化学镀镍浴配方、工艺条件和配液原则。

Component Composition of Essential Oils <i>Curcuma longa</i>L. (Zingiberaceae) Introduced in Uzbekistan

This article presents the results of studying the component composition of essential oils of leaves and rhizomes of C. longa grown in Uzbekistan. The chemical composition of essential oils of vegetative organs of the Curcuma longa (Zingiberaceae) plant introduced in Uzbekistan was studied for the first time. Essential oils of the plant were isolated by hydrodistillation, their chemical composition was studied by chromatography-mass spectrometry. In the composition of essential oils of leaves and rhizomes C. longa L., introduced in the Tashkent oasis, found 27 and 16 components, respectively, among which the leaf is dominated by α-fellandren (33.79%), α-terpinolene (24.28%), n-cymene (12.27%), eucalyptol (9.77%), and in the rhizomes-6-(1,3-dimethyl-buta-1,3-dienyl)-1,5,5-trimethyl-7-oxa-bicyclo [4.1.0] hept-2-EN (22.77%), α-curcumene (4.11%), 2,6,6,9-tetramethyl-tricyclo [5.4.0.0(2.8)] undec-9-EN (3.81%), α-zedren (1.14%), as well as 3 components that were not identified (the mass spectrum did not match the library data) their mass fraction was 47.47%, 10.41% and 3.46%. The composition of leaves and rhizomes of C. longa differ quantitatively and in quality. For example, α-curcumene in percentage content is more contained in rhizomes, and α-fellandren, which is the dominant content in leaves, is not found in the underground part.

玻璃量器自动检定技术研究

针对玻璃量器人工检定存在用眼疲劳及其引起的判读误差大的问题,研究了基于机器视觉检测技术和工业机器人应用的自动检定技术,探讨了一种玻璃量器无人检定控制系统及装置的解决方案。采用工业机器人执行搬运操作,运用机器视觉检测技术自动识别被检量器的规格、定位被检量器的坐标、检测被检量器的标线,并且控制工业镜头移至平视标线的位置,以实时监测注水过程的液面及其与标线的关系,最后自动采集称重数据,依据检定规程进行数据处理,从而实现全过程自动化检定。介绍了玻璃量器机器视觉检定技术的识别定位、标线平视、注水控制的计算机程序框图和基于LabVIEW平台开发的程序案例,还介绍了玻璃量器自动检定装置的执行机构。通过200 mL、500 mL、1000 mL容量瓶校准实验的验证,装置的测量重复性优于0.02 mL。

玻璃量器机器视觉自动校准装置

提出一种玻璃量器机器视觉自动检测方法和装置,能够实现机器视觉抓取与移动玻璃量器、机器视觉控制注水过程、采集测量数据等功能,以及玻璃量器检测过程自动化。文中介绍了该装置的主要组成部分及其功能与原理,以及自动检测的方法与过程。通过1000ml容量瓶检测实验,验证了该装置的测量重复性优于0.02ml。