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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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Pedro Silvino Pereira Carlos Vinicius Barros Oliveira Ana Josicleide Maia Maria Celeste Vega-Gomez Miriam Roln Cathia Coronel Antnia Eliene Duarte Henrique Douglas Melo Coutinho Abolghasem Siyadatpanah Roghayeh Norouzi Seyed Jafar Adnani Sadati Polrat Wilairatana Teresinha Gonalves Silva 《Molecules (Basel, Switzerland)》2022,27(9)
Cymbopogon winterianus, known as “citronella grass”, is an important aromatic and medicinal tropical herbaceous plant. The essential oil of C. winterianus (EOCw) is popularly used to play an important role in improving human health due to its potential as a bioactive component. The present study aimed to identify the components of the essential oil of C. winterianus and verify its leishmanicidal and trypanocidal potential, as well as the cytotoxicity in mammalian cells, in vitro. The EOCw had geraniol (42.13%), citronellal (17.31%), and citronellol (16.91%) as major constituents. The essential oil only exhibited significant cytotoxicity in mammalian fibroblasts at concentrations greater than 250 μg/mL, while regarding antipromastigote and antiepimastigote activities, they presented values considered clinically relevant, since both had LC50 < 62.5 μg/mL. It can be concluded that this is a pioneer study on the potential of the essential oil of C. winterianus and its use against the parasites T. cruzi and L. brasiliensis, and its importance is also based on this fact. Additionally, according to the results, C. winterianus was effective in presenting values of clinical relevance and low toxicity and, therefore, an indicator of popular use. 相似文献
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