Results 51 to 60 of about 538,193 (321)

Optical dispersions through intracellular inhomogeneities

Physical Review Research, 2023
The transport of intensity equation (TIE) exhibits a noninterferometric correlation between the intensity and phase variations of intermediate fields (e.g., light and electrons) in biological imaging. Previous TIE formulations have generally assumed free-
Masaki Watabe, Yasuhiro Hirano, Atsuko Iwane, Osamu Matoba, Koichi Takahashi   +4 more
doaj   +1 more source

Closed-Form Solution of Radial Transport of Tracers in Porous Media Influenced by Linear Drift

Energies, 2018
A new closed-form analytical solution to the radial transport of tracers in porous media under the influence of linear drift is presented. Specifically, the transport of tracers under convection–diffusion-dominated flow is considered.
Lateef T. Akanji, Gabriel K. Falade
doaj   +1 more source

Multiple scattering of polarized light in disordered media exhibiting short-range structural correlations

, 2016
We develop a model based on a multiple scattering theory to describe the diffusion of polarized light in disordered media exhibiting short-range structural correlations.
Carminati, Rémi, Pierrat, Romain, Vynck, Kevin   +2 more
core   +2 more sources

The Influence of Electric Field Intensity and Particle Length on the Electrokinetic Transport of Cylindrical Particles Passing through Nanopore

Micromachines, 2020
The electric transport of nanoparticles passing through nanopores leads to a change in the ion current, which is essential for the detection technology of DNA sequencing and protein determination.
Liuyong Shi, Xiaohan He, Jian Ge, Teng Zhou, Ting Li, Sang Woo Joo   +5 more
doaj   +1 more source

On the Derivation of Vector Radiative Transfer Equation for Polarized Radiative Transport in Graded Index Media

, 2011
Light transport in graded index media follows a curved trajectory determined by the Fermat's principle. Besides the effect of variation of the refractive index on the transport of radiative intensity, the curved ray trajectory will induce geometrical ...
Arridge, Ben Abdallah, Ben Abdallah, Chandrasekhar, Deiveegan, Goldstein, Goloub, Haferman, Hebden, Huang, J.M. Zhao, J.Y. Tan, Jones, Karavstov, Klose, L.H. Liu, Lau, Lemonnier, Liu, Liu, Liu, Liu, Liu, Liu, Modest, Pomraning, Qiao, Sakami, Siegel, Stavroudis, Tsang, Xia, Zhang, Zhao, Zhao   +34 more
core   +1 more source

Transport-of-Intensity Equation for Real-Time Tomographic Experiments: Projection or Slices?

IEEE Access
In this manuscript, we present a computational imaging discussion on the classical Paganin approach for recovering the phase of X-ray tomographic measurements using the Transport-of-Intensity Equation (TIE) with a single-material parameter.
Eduardo X. Miqueles, Paola C. Ferraz, Goran Lovric, David M. Paganin   +3 more
doaj   +1 more source

Interplanetary particle transport simulation for warning system for aviation exposure to solar energetic particles

, 2015
Solar energetic particles (SEPs) are one of the extreme space weather phenomena. A huge SEP event increases the radiation dose received by aircrews, who should be warned of such events as early as possible.
Kataoka, Ryuho, Kubo, Yûki, Sato, Tatsuhiko   +2 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Propagation based phase retrieval of simulated intensity measurements using artificial neural networks

, 2018
Determining the phase of a wave from intensity measurements has many applications in fields such as electron microscopy, visible light optics, and medical imaging.
Kemp, Zachary David Cleary
core   +1 more source