Results 41 to 50 of about 535,629 (194)

Multiple scattering of light in superdiffusive media

, 2010
Light transport in superdiffusive media of finite size is studied theoretically. The intensity Green's function for a slab geometry is found by discretizing the fractional diffusion equation and employing the eigenfunction expansion method.
Bertolotti, Jacopo, Vynck, Kevin, Wiersma, Diederik S.   +2 more
core   +1 more source

Exactly solvable model of quantum diffusion [PDF]

, 2004
We study the transport property of diffusion in a finite translationally invariant quantum subsystem described by a tight-binding Hamiltonian with a single energy band and interacting with its environment by a coupling in terms of correlation functions ...
A. Knauf, A. Schmid, A.A. Ovchinnikov, A.G. Redfield, A.O. Caldeira, C.H. Mak, D.K. Wójcik, F. Barra, G. Lindblad, H. Spohn, H.P. Breuer, M. Esposito, M. Esposito, M. Sassetti, M. Sassetti, M.P.A. Fisher, N.G. Kampen van, N.W. Ashcroft, P. Gaspard, P. Gaspard, P. Gaspard, P. Gaspard, R. Kubo, U. Weiss, V. Jaksic, V. Jaksic, Y.-C. Chen, Y.-C. Chen, Y.-C. Chen   +28 more
core   +3 more sources

Quantitative Phase Imaging Camera With a Weak Diffuser

Frontiers in Physics, 2019
We introduce the quantitative phase imaging camera with a weak diffuser (QPICWD) as an effective scheme of quantitative phase imaging (QPI) based on normal microscope platforms.
Linpeng Lu, Linpeng Lu, Linpeng Lu, Jiasong Sun, Jiasong Sun, Jiasong Sun, Jialin Zhang, Jialin Zhang, Jialin Zhang, Yao Fan, Yao Fan, Yao Fan, Qian Chen, Qian Chen, Chao Zuo, Chao Zuo, Chao Zuo   +16 more
doaj   +1 more source

Algal Concentration Dynamical Model Simulation in Sewon, Bantul, Yogyakarta Facultative Wastewater Treatment Pond [PDF]

E3S Web of Conferences, 2019
In this paper, we simulate a dynamical model of the algal concentration transport by using data collected in Sewon, Bantul, Yogyakarta facultative wastewater treatment ponds to analyse and evaluate the dynamic of the algal concentration.
Sunarsih, Widowati, Kartono, Sutrisno
doaj   +1 more source

Effects of Rainfall Intensity, Kinetic Energy and Slope Angle to the Upslope, Downslope, and Lateral Slope Components of Splash Erosion in Hillslope Agriculture: A Case in Badiangan, Ajuy, Iloilo [PDF]

Nature Environment and Pollution Technology
This study was conducted in Barangay Badiangan, Ajuy, Iloilo City, Philippines (11°10’N, 122°58’E) to determine the effects of rainfall intensity and other rainfall-derived parameters on the directional components of splash erosion in hillslopes.
Shevanee Ruth G. dela Cruz and Ricardo L. Fornis
doaj   +1 more source

Solving the stationary Liouville equation via a boundary element method

, 2012
Intensity distributions of linear wave fields are, in the high frequency limit, often approximated in terms of flow or transport equations in phase space.
Boyd, Cerveny, Chappell, Chappell, Craik, David J. Chappell, Ding, Engquist, Glasser, Graefe, Gregor Tanner, Gutzwiller, Junge, Kuttruff, Langley, Langley, Le Bot, Le Bot, Le Bot, Le Bot, LeVeque, Littlejohn, Lyon, Lyon, McDonald, Osher, Runborg, Schmindlin, Sommer, Tanner, Tanner, Telles, Ying   +32 more
core   +1 more source

Investigating transport capacity equations in sediment yield modelling for the Cariri semi-arid region of Paraiba-PB/Brazil [PDF]

Proceedings of the International Association of Hydrological Sciences, 2015
In the semi arid Cariri region of the state of Paraiba, Brazil, runoff is of the Hortonian type generated by excess of rainfall over infiltration capacity, and soil erosion is governed by rainfall intensity and sediment size.
E. E. De Figueiredo, C. C. R. A. Souto, Z. C. Vieira   +2 more
doaj   +1 more source

Advances in Phase Retrieval by Transport of Intensity Equation

Proceedings of the 7th International Conference on Photonics, Optics and Laser Technology, 2019
There are many factors in the calculations of Transport of Intensity Equation, which may lead to the uncertainty of the retrieved phase. In this paper, effect of these parameters such as defocus distance, focus plane and magnification, on the results is studied. It is hoped that this would provide a more robust and reliable method for phase and optical
Yingjie Yu, Chi Wang, Chongtian Huang, Liansheng Sui, Anand Asundi, Dingfu Chen   +5 more
openaire   +1 more source

A hybrid transport-diffusion model for radiative transfer in absorbing and scattering media [PDF]

, 2014
International audienceA new multi-scale hybrid transport-diffusion model for radiative transfer calculations is proposed. In this model, the radiative intensity is decomposed into a macroscopic component calculated by the diffusion equation, and a ...
Caliot, Cyril, Coelho, Pedro Jorge Martins, Crouseilles, Nicolas, Roger, Maxime   +3 more
core   +3 more sources

Why Do Chromospheric Oscillations in Sunspot Umbrae Appear to Propagate Downward?

The Astrophysical Journal Letters, 2023
Umbral oscillations constitute the most noticeable chromospheric feature of sunspot umbrae—large-amplitude oscillations of intensity (umbral flashes, if very strong) and line-of-sight velocity, with periods of about 3 minutes.
Jongchul Chae, Eun-Kyung Lim, Kyeore Lee, Hannah Kwak, Kyoung-Sun Lee, Juhyung Kang, Soosang Kang   +6 more
doaj   +1 more source