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Akademický článek

6,7-Difluoro-1,2,3,4-tetrahydroquinoxaline-5,8-dicarbonitrile

Autor: Ming-Yang He, Jing Li, Xiao-Chuan Jia, Bao-Hua Qu

Publikováno v: Acta Crystallographica Section E, Vol 69, Iss 3, Pp o376-o376 (2013)

In the title compound, C10H6F2N4, the Car—N bonds are slightly shortened with respect to a standard aniline C—N bond [1.3580 (16) and 1.3618 (16) versus 1.39 Å], thus indicating some π–π conjgation with the electron-acceptor CN groups. The m

Externí odkaz: https://doaj.org/article/998eabd9b326478d949c2e2a5a478ada

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An absolute measurement method of time-grating angular displacement sensor

Autor: Tianheng Zhang, Feng-jun Li, Bao-hua Qu, Yang-yang wang, Dong-lin Peng

Publikováno v: Ninth International Symposium on Precision Mechanical Measurements.

Angular displacement sensor plays an indispensable role in high-precision angular measurement and position feedback. With the development of sensing technology, some traditional incremental measurement methods have been unable to meet the requirement

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db9fd749bd5ceb9cf00167425d3e9df0
https://doi.org/10.1117/12.2547184

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Error testing and compensation of the time-grating angle measurement system

Autor: Bao-hua Qu, Yang-yang wang, Tian-heng Zhang, Qi-fu Tang

Publikováno v: Ninth International Symposium on Precision Mechanical Measurements.

In order to remove the subdivide error and zero error to improve the measurement precision of time-grating displacement sensor angle measuring system, this paper proposed an error compensation method based on sparse sampling. Firstly, harmonic analys

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1824849d05e918e06f11f7db0d608214
https://doi.org/10.1117/12.2547246

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Supramolecular Assemblies, Luminescence and Anion Exchange of Helical Pb(II) Complexes Based on Enantiomeric N-(2-pyridylmethyl) Alanine Ligands

Autor: Qi Zhang, Chen Chen, Hai Zhu, Bao-Hua Qu, Zhi-Hui Zhang

Publikováno v: Journal of Chemical Research. 40:607-613

Two pairs of PbII coordination polymers have been synthesised using pyridine-functionalised amino acid derivatives N-(2-pyridylmethyl)-L(D)-alanine hydrochlorides [(L-Hpala)Cl or (D-Hpala)Cl] and PbII salts. Their X-ray structures confirm their formu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::134e331f64cb49fb1ba7b60bf4d50207
https://doi.org/10.3184/174751916x14738569571337

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Synthesis, supramolecular assemblies and luminescence of nickel(II) complexes based on a series of N-(2-pyridylmethyl) amino acid derivatives

Autor: Ming-Yang He, Bao-Hua Qu, Qun Chen, Qing-Qing Zhang, Zhi-Hui Zhang

Publikováno v: Inorganica Chimica Acta. 418:59-65

N -(2-Pyridylmethyl)- l -alanine ( l -Hpana), and N -(2-pyridylmethyl)-aspartic acid ( l -H 2 pasp) have been solvothermally prepared and structurally characterized by X-ray single-crystal diffraction. Complexes 1 and 2 crystallize in the monoclinic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1759ece7328c33fc6927972aa63900f2
https://doi.org/10.1016/j.ica.2014.04.006

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