Results 21 to 30 of about 46,856 (249)

Hydromagnetic free convection flow of viscous fluid between vertical parallel plates with damped thermal and mass fluxes

Alexandria Engineering Journal, 2019
In this article, hydromagnetic free convection flow of viscous fluid between two vertical plates is considered. The Caputo time-fractional derivative is used and the governing equations are fractionalized by means of generalized Fourier’s and Fick’s laws.
Zehui Shao, Nehad Ali Shah, Iskander Tlili, Usman Afzal, M. Saqib Khan   +4 more
doaj   +1 more source

Development of dispersive solid-phase microextraction coupled with high-pressure liquid chromatography for the preconcentration and determination of the selected neonicotinoid insecticides

Journal of Analytical Science and Technology, 2022
Neonicotinoid insecticides have raised a lot of societal concerns due to their environmental ubiquity and unique mode of action. Therefore, it is of great research interest to monitor their occurrence in the environmental waters. However, these compounds
Ngwako Joseas Waleng, Shirley Kholofelo Selahle, Anele Mpupa, Philiswa Nosizo Nomngongo   +3 more
doaj   +1 more source

Photo--assisted current and shot noise in the fractional quantum Hall effect [PDF]

, 2003
The effect of an AC perturbation on the shot noise of a fractional quantum Hall fluid is studied both in the weak and the strong backscattering regimes. It is known that the zero-frequency current is linear in the bias voltage, while the noise derivative
A. Crépieux, A. Kumar, A.A. Kozhevnikov, Adeline Crépieux, C. Bruder, C. de C. Chamon, C. de C. Chamon, C. de C. Chamon, C.L. Kane, C.L. Kane, C.L. Kane, C.W.J. Beenakker, D. Feldman, G. Cuniberti, G. Platero, G.B. Lesovik, G.B. Lesovik, G.B. Lesovik, G.B. Lesovik, H.H. Lin, I. Safi, J. Torrès, K.I. Imura, K.I. Imura, L. Saminadayar, L.H. Reydellet, L.P. Kouwenhoven, L.P. Kouwenhoven, M. Büttiker, M. Büttiker, M. Büttiker, M. Reznikov, M. Sassetti, M.H. Pedersen, P. Fendley, Pierre Devillard, R. Aguado, R. de-Picciotto, R.J. Schoelkopf, R.J. Schoelkopf, S.R. Yang, T. Martin, T. Martin, T. Martin, T. Martin, T.H. Oosterkamp, Thierry Martin, V. Rodriguez, V.V. Ponomarenko, X. Jehl, X.G. Wen, X.G. Wen, Y. Gavish, Y. Gavish, Y. Levinson, Y. Oreg   +55 more
core   +6 more sources

Analytical Solution of Generalized Space-Time Fractional Advection-Dispersion Equation via Coupling of Sumudu and Fourier Transforms [PDF]

Frontiers in Physics, 2019
The objective of this article is to present the computable solution of space-time advection-dispersion equation of fractional order associated with Hilfer-Prabhakar fractional derivative operator as well as fractional Laplace operator. The method followed in deriving the solution is that of joint Sumudu and Fourier transforms.
Vinod Gill, Jagdev Singh, Yudhveer Singh
openaire   +2 more sources

Magnetic Solid Phase Extraction Based on Nanostructured Magnetic Porous Porphyrin Organic Polymer for Simultaneous Extraction and Preconcentration of Neonicotinoid Insecticides From Surface Water

Frontiers in Chemistry, 2020
In this study, a magnetic porphyrin-based porous organic polymer (MP-POP) nanocomposite was successfully synthesized according previous studies and applied as an adsorbent for simultaneous extraction and preconcentration of four neonicotinoid ...
Shirley K. Selahle, Shirley K. Selahle, Ngwako J. Waleng, Ngwako J. Waleng, Anele Mpupa, Anele Mpupa, Philiswa N. Nomngongo, Philiswa N. Nomngongo, Philiswa N. Nomngongo   +8 more
doaj   +1 more source

Fractional Derivative as Fractional Power of Derivative [PDF]

, 2007
Definitions of fractional derivatives as fractional powers of derivative operators are suggested. The Taylor series and Fourier series are used to define fractional power of self-adjoint derivative operator.
Berezin F. A., Berezin F. A., Brichkov Yu. A., Caputo M., Dalechky Yu. L., Hadid S. B., Karasev M. V., Korabel N., Krasnolelsky M. A., Krasnolelsky M. A., Krein S. G., Krein S. G., Le Mehaute A., Luke Y., Maslov V. P., Momani S., Oldham K. B., Samko S. G., Tarasov V. E., Tarasov V. E., Tarasov V. E., Tarasov V. E., Tarasov V. E., Tarasov V. E., VASILY E. TARASOV, Zaslavsky G. M.   +25 more
core   +1 more source

Coupled systems of fractional equations related to sound propagation: analysis and discussion [PDF]

, 2012
In this note we analyse the propagation of a small density perturbation in a one-dimensional compressible fluid by means of fractional calculus modelling, replacing thus the ordinary time derivative with the Caputo fractional derivative in the ...
Diethelm K., Federico Polito, Fellah Z. E. A., Haubold H. J., Kilbas A. A., Podlubny I., Roberto Garra   +6 more
core   +1 more source

Two-Dimensional Discrete Coupled Fractional Fourier Transform (DCFrFT)

Fractal and Fractional
The fractional Fourier transform is critical in signal processing and supports many applications. Signal processing is one notable application. Implementing the fractional Fourier transform requires discrete versions.
Asma Elshamy, Zeinab S. I. Mansour, Ahmed Zayed   +2 more
doaj   +1 more source

Five Years of Continuous-time Random Walks in Econophysics

, 2004
This paper is a short review on the application of continuos-time random walks to Econophysics in the last five years.Comment: 14 pages.
Scalas, Enrico
core   +2 more sources

Coupled oscillators with power-law interaction and their fractional dynamics analogues

, 2006
The one-dimensional chain of coupled oscillators with long-range power-law interaction is considered. The equation of motion in the infrared limit are mapped onto the continuum equation with the Riesz fractional derivative of order $\alpha$, when ...
Alfimov, Alfimov, Barre, Bouchaud, Braun, Braun, Carreras, Dyson, Dyson, Dyson, Erdélyi, Flach, Flach, Frohlich, Gaididei, George M. Zaslavsky, Gorbach, Ishimori, Klafter, Klafter, Lewin, Meerschaert, Meerschaert, Meerschaert, Metzler, Metzler, Miller, Milovanov, Mingaleev, Montroll, Mukamel, Nickolay Korabel, Oldham, Podlubny, Pokrovsky, Saichev, Samko, Shima, Shlesinger, Sokolov, Tarasov, Uchaikin, Vasily E. Tarasov, Weitzner, Zaslavsky, Zaslavsky, Zaslavsky, Zosimov   +47 more
core   +1 more source