In summary, this paper compared the WDD material reference and its commercial prescriptions based on UPLC-QTOF-MS and multivariate statistical analysis. The quality of most WDD commercial prescriptions was unstable and significantly different from the WDD material reference, which could impact the ...
a, The structure of 1 was optimized at the B3LYP/6-31G(d) level of theory, whereby the butoxy groups were replaced by methoxy groups. b, Aromatic region of the 1H NMR spectra of 1 in 1,1,2,2-tetrachloroethane-d2 at 25 °C and at 140 °C. c, Snapshots of the DFTB-MD si...
The wide applications of liquid chromatography - mass spectrometry (LC-MS) in untargeted metabolomics demand an easy-to-use, comprehensive computational workflow to support efficient and reproducible data analysis. However, current tools were primarily d
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Fig. 2. Classification of storage devices. In the review paper, various types of energy storage devices have been investigated. However, more emphasis is given to the study of the characteristics of electrochemical, electrical, and thermal energy storage systems. 2.1. Electrochemical technologies From...
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如果你真打算自学A Level,那么认真建议你搭个梯子上外网,大部分的学习资源都在海外服务器,天朝不一定能上,或者很卡,极度低效。 不翻墙可以去看一下剑桥CIE官网: cambridgeinternational.org 考CIE的话会有用,Edexcel当然就没什么参考性了。 基本的报名流程和考试内容就都能了解的很清楚,官网一般的pastpaper也会有,...