Results 21 to 30 of about 69,760 (269)

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

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

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

COUPLED FRACTIONAL WIGNER DISTRIBUTION WITH APPLICATIONS TO LFM SIGNALS

Fractals, 2023
The coupled fractional Fourier transform is a much recent ramification of the two-dimensional fractional Fourier transform, wherein the kernel is not a tensor product of one-dimensional copies, but relies on two angles that are coupled to yield a new ...
Aajaz A. Teali, F. Shah, Azhar Y. Tantary, K. Nisar   +3 more
semanticscholar   +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

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

Explicit Hermite-type eigenvectors of the discrete Fourier transform [PDF]

, 2015
The search for a canonical set of eigenvectors of the discrete Fourier transform has been ongoing for more than three decades. The goal is to find an orthogonal basis of eigenvectors which would approximate Hermite functions -- the eigenfunctions of the ...
Kuznetsov, Alexey
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

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

Determination of Total Hydrocarbons in Contaminated Soil with "Thin Layer Sorptive Extraction Coupled with Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy".

Analytical Chemistry, 2020
Soil analysis using infrared spectroscopy has been proposed as an alternative to conventional soil analysis to detect soil contamination. This study therefore aims to develop an innovative, in situ, rapid, precise, and inexpensive method that is easy to ...
Houssein Louati, S. Maria, Jean-François Rocci, P. Doumenq   +3 more
semanticscholar   +1 more source