Zobrazeno 1 - 9
of 9
pro vyhledávání: '"and Hanxing Zheng"'
Publikováno v:
Systems, Vol 11, Iss 10, p 502 (2023)
Accurately measuring systemic financial risk and analyzing its sources are important issues. This study focuses on the frequency dynamics of volatility connectedness in Chinese financial institutions using a spectral representation framework of gener
Externí odkaz:
https://doaj.org/article/808100e1a3f34281b0ba0f49a1cf7bf2
Publikováno v:
The China Nonprofit Review. 12:161-180
The importance of NGO s’ participation in poverty alleviation has not only been well documented by extensive studies but also confirmed by rich experience both at the international and national levels. In China, the government officially opened its
Publikováno v:
Chemistry of Materials. 11:130-134
Square antiprism zirconium tetrakis-β-diketonate complexes with 24 alkoxy chains organize in columnar liquid crystal phases. X-ray diffraction and polarized microscopy studies on complexes with n-alkoxy side chains revealed a columnar hexagonal phas
Publikováno v:
Chemistry of Materials. 8:907-911
A series of copper(bis-β-diketonate) complexes are reported which display columnar liquid-crystal phases with a hexagonal disordered structure (Dhd). The complexes do not have the disc-shape characteristic of most Dhd materials, but produce a disc s
Publikováno v:
Chemistry of Materials. 7:2067-2077
Autor:
Timothy M. Swager, Hanxing Zheng
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 260:301-306
Octahedral liquid crystals based upon diketonate complexes of Fe+3, Mn+3, and Cr+3 are reported. These materials display columnar phases with ≥12 sidechains and an ordered smectic phase with 6 sidechains.
Publikováno v:
Liquid Crystals. 14:1421-1429
The dependence of mesomorphism of 1,3-diketonate vanadium-oxo (vanadyl) complexes on the number of side chains was investigated. These complexes have a large dipole normal to the disc plane and are under investigation in an effort to generate discoti
Publikováno v:
Chemistry of Materials. 6:101-103
The diketonate Schiff-base complexes shown below were investigated, and the square planar derivatives (M=Ni, Cu, Pd) were found to display discotic hexagonal disordered phases (Dhd). The M=VO analogs are not liquid crystalline. None of the complexes
Autor:
Timothy M. Swager, Hanxing Zheng
Publikováno v:
Journal of the American Chemical Society. 116:761-762
A new class of metallomesogens with octahedral structures are described. The observation of liquid crystallinity in these materials was unexpected as a result of their low aspect ratios. To better understand these materials, the dependence of the mes