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Nonlinear Dynamics - In this paper, we analytically and numerically investigate chaos in attitude dynamics of a flexible satellite composed of a rigid body and two identical rigid panels attached... 相似文献
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In this paper stability analysis of fractional-order nonlinear systems is studied. An extension of Lyapunov direct method
for fractional-order systems using Bihari’s and Bellman–Gronwall’s inequality and a proof of comparison theorem for fractional-order
systems are proposed. 相似文献
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Sadati Sorkhi Seyyed Erfan Hashemi Mohammad M. Ezabadi Ali 《Research on Chemical Intermediates》2020,46(4):2229-2246
Research on Chemical Intermediates - A novel dicationic Brönsted acidic ionic liquid based on pyrazine has been prepared and characterized by FTIR, 1H NMR, 13C NMR, MS, thermal gravimetric and... 相似文献
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A. Shafiee S. Emami S. Ghodsi S. Najjari M. Sorkhi N. Samadi M. A. Faramarzi A. Foroumadi 《Journal of the Iranian Chemical Society》2009,6(2):325-333
A series of N-[2-(2-naphthyl)ethyl]piperazinyl quinolones containing a carbonyl related functional groups (oxo- or oxyimino-) on the ethyl spacer was synthesized and evaluated for antibacterial activity. The synthesis of N-[2-(2-naphthyl)ethyl]piperazinyl quinolones was achieved through the versatile and efficient synthetic route that involved reaction of piperazinyl quinolones with appropriate α-bromoketone or α-bromooxime derivatives. The structures of new compounds were confirmed by elemental analysis, IR and NMR spectra. Antibacterial data indicated that some of the new N-[2-(2-naphthyl)ethyl]piperazinyl quinolones showed good antibacterial activity and modification of the position 8 and N-1 substituent on quinolone ring, and ethyl spacer functionality produced significant changes in activity against Gram-positive and Gram-negative bacteria. 相似文献
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The static properties and semileptonic decays of ground-state doubly heavy baryons are studied in the framework of a non-relativistic quark model. Using a phenomenological potential model, we calculate the ground-state masses and magnetic moments of doubly heavy Ω and Ξ baryons. In the heavy quark limit, we introduce a simple form of the universal Isgur-Wise function used as the transition form factor and then investigate the exclusive \begin{document}$ b \rightarrow c $\end{document} ![]()
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semileptonic decay widths and branching fractions for \begin{document}$ \dfrac{1}{2}\rightarrow \dfrac{1}{2} $\end{document} ![]()
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baryon transitions. Our obtained results are in agreement with other theoretical predictions. 相似文献
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