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Contemporary realistic mathematical models of single-cell cardiac electrical excitation are immensely detailed. Model complexity leads to parameter uncertainty, high computational cost and barriers to mechanistic understanding. There is a…

Tissues and Organs · Quantitative Biology 2022-02-28 Muhamad H. N. Aziz , Radostin D. Simitev

The complexity and size of state-of-the-art cell models have significantly increased in part due to the requirement that these models possess complex cellular functions which are thought--but not necessarily proven--to be important. Modern…

Neurons and Cognition · Quantitative Biology 2018-11-22 J. L. Hart , P. A. Gremaud , T. David

We develop a simple model of ionic current through neuronal membranes as a function of membrane potential and extracellular ion concentration. The model combines a simplified Poisson-Nernst-Planck (PNP) model of ion transport through…

Biological Physics · Physics 2023-09-06 Linda Werneck , Mertcan Han , Erdost Yildiz , Marc-André Keip , Metin Sitti , Michael Ortiz

We numerically investigate the role of mechanical stress in modifying the conductivity properties of the cardiac tissue and its impact in computational models for cardiac electromechanics. We follow a theoretical framework recently proposed…

Tissues and Organs · Quantitative Biology 2019-05-02 A. Loppini , A. Gizzi , R. Ruiz Baier , C. Cherubini , F. Fenton , S. Filippi

How is reliable physiological function maintained in cells despite considerable variability in the values of key parameters of multiple interacting processes that govern that function? Here we use the classic Hodgkin-Huxley formulation of…

Neurons and Cognition · Quantitative Biology 2018-08-20 Hillel Ori , Eve Marder , Shimon Marom

Vascular calcification is implicated as an important factor in major adverse cardiovascular events (MACE), including heart attack and stroke. A controversy remains over how to integrate the diverse forms of vascular calcification into…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Mehdi Ramezanpour , Anne M. Robertson , Yasutaka Tobe , Xiaowei Jia , Juan R. Cebral

The origin of the high leakage current measured in several vertical-type diamond Schottky devices is conjointly investigated by conducting probe atomic force microscopy (CP-AFM) and confocal micro-Raman/Photoluminescence (PL) imaging…

Materials Science · Physics 2015-06-19 Jose Alvarez , M. Boutchich , J. P. Kleider , T. Teraji , Y. Koide

Action potential propagation along the axons and across the dendrites is the foundation of the electrical activity observed in the brain and the rest of the central nervous system. Theoretical and numerical modeling of this action potential…

Quantitative Methods · Quantitative Biology 2022-12-01 Rahul Gulati , Shiva Rudraraju

We present the statistical method to study the interaction between a chosen protein and another molecule (e.g., both being components of lubricin found in synovial fluid) in a water environment. The research is performed on the example of…

The action potential signal of nerve and muscle is produced by voltage sensitive channels that include a specialized device to sense voltage. Gating currents of the voltage sensor are now known to depend on the back-and-forth movements of…

Biological Physics · Physics 2017-07-11 Tzyy-Leng Horng , Robert S. Eisenberg , Chun Liu , Francisco Bezanilla

We report a detailed semi-analytical treatment to investigate the dynamics of a single cavity soliton (CS) and two co-propagating CSs separately in a Kerr mediated passive optical fiber resonator which is driven by a phase-modulated pump.…

Optics · Physics 2019-08-07 Maitrayee Saha , Samudra Roy , Shailendra K. Varshney

The noble elements constitute the simplest group of atoms. At low temperatures or high pressures they freeze into the face-centered cubic (fcc) crystal structure (except helium). We perform molecular dynamics using the recently proposed…

Materials Science · Physics 2024-01-05 Aditya N. Singh , Jeppe C. Dyre , Ulf R. Pedersen

We analyze the spectrum of harmonic flow, $v_n(p_T)$ for $n=0\text{--}5$, in event-by-event hydrodynamic simulations of Pb+Pb collisions at the CERN Large Hadron Collider ($\sqrt{s_{NN}}=2.76\,{\text{TeV}}$) with principal component…

Nuclear Theory · Physics 2016-02-25 Aleksas Mazeliauskas , Derek Teaney

A solvable molecular collision model that predicts Aharonov-Bohm (AB) like scattering in the adiabatic approximation is introduced. For it, we propagate coupled channel wave packets without resorting to a Born-Oppenheimer (BO)…

Quantum Physics · Physics 2017-02-01 B. Zygelman

Cardiac diseases are the principal cause of human morbidity and mortality in the western world. The electric potential of the heart is a highly complex signal emerging as a result of nontrivial flow conduction, hierarchical structuring and…

Data Analysis, Statistics and Probability · Physics 2012-04-19 Oriol Pont , Michel Haïssaguerre , Hussein Yahia , Nicolas Derval , Mélèze Hocini

Halide perovskite nanocrystals are leading candidates for next-generation optoelectronics, yet the role of surface ligands in controlling their phonon dynamics remains poorly understood. These dynamics critically govern nonradiative…

Materials Science · Physics 2026-03-18 Seungjun Cha , Chen Wang , Victor Fung , Guoxiang Hu

We study the phase diagram of strongly interacting matter in the framework of a non-local SU(2) chiral quark model which includes wave function renormalization and coupling to the Polyakov loop. Both non-local interactions based on the…

High Energy Physics - Phenomenology · Physics 2014-11-21 G. A. Contrera , M. Orsaria , N. N. Scoccola

The successive ionization potentials (IPs) and electron affinities (EAs) for superheavy elements with $111 \leq Z \leq 114$, namely, Rg, Cn, Nh, and Fl are reexamined using the relativistic Fock-space coupled-cluster method with…

Active microparticles in confining potentials manifest complex and intriguing dynamical phenomena, as their activity competes with confinement. The steady-state position distributions of harmonically bound active Brownian particles (HBABPs)…

Soft Condensed Matter · Physics 2025-05-13 Sanatan Halder , Manas Khan

In this paper, we study magnetized winds described by variable adiabatic index equation of state in Paczy\'{n}ski \& Wiita pseudo-Newtonian potential. We identify the flow solutions with the parameter space of the flow. We also confirm that…

High Energy Astrophysical Phenomena · Physics 2019-04-24 Kuldeep Singh , Indranil Chattopadhyay