1 Hydrogen exists as two isomers, ortho and para, based on proton nuclear spin. A temperature-dependent equilibrium dictates their ratio, with a 75% ortho isomer makeup at room temperature shifting to ...

Two models are applied to all the compuations and three regression models are applied to the np-degree Randic index. The computation showed that quadratic regression model is suitable for study octane ...

A combined experimental and Density functional theory (DFT) B3LYP/6-311+G* study on the IR spectra of four stable isomers of 2-N,N-dimethylaminecyclohexyl 1-N',N'-dimethylcarbamate was performed. Our ...

While mass spectrometry (MS) is the favored analytical technique for the primary structures of proteins and their post-translational modifications (PTMs), the combinatorial isomers that commonly ...

In continuation with ongoing interest in the structural and optical properties of acrylonitrile derivatives, we report herein synthesis, optical properties, and single crystal X-ray analysis of the ...

This study is led by Prof. Shaodong Zhou (College of Chemical and Biological Engineering, Zhejiang University) and Prof. Xiao-Nan Wu (Department of Chemistry, Fudan University). The experiments ...

More information: Xinxin Zheng et al, Assessment of the antioxidant activities of representative optical and geometric isomers of astaxanthin against singlet oxygen in solution by a spectroscopic ...

Uranium is a radioactive element with many isotopes, two of which occur naturally on ... At first nuclear isomers were useful in the scientific community only as a means to understand how nuclei ...

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