Article
Thermodynamics
S. E. Savotchenko, A. N. Cherniakov
Summary: This paper proposes a new theoretical description of diffusion features along nonequilibrium dislocation pipes. The effective diffusion coefficient in nonequilibrium dislocation is calculated and analyzed, taking into account the relaxation processes during diffusion annealing. The equation of nonequilibrium diffusion from a constant source in dislocation pipes is derived, and the analytical solution of the formulated equation describing the diffusant concentration in dislocation pipe is found. The concentration of diffusant and the amount of diffusant at a fixed depth increase with an increase in nonequilibrium dislocation excess energy. The time dependence of diffusant concentration shows a maximum due to an increase in nonequilibrium dislocation excess energy and relaxation processes during diffusion annealing.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Astronomy & Astrophysics
Federico Compagnin, Stefano Profumo, Nicolao Fornengo
Summary: This article investigates the cosmology and phenomenology of a dark photon portal with a simple dark sector composed of a single, light, fermionic dark matter particle species with mass in the MeV range. Three possible kinetic mixing structures between a new Abelian gauge group U(1)dark and the visible sector are considered: U(1)e.m., U(1)Y, and T[SU(2)L]. The author assumes the dark photon to have a massive and MeV-scale mass, close to the mass scale of the dark matter candidate. The article calculates the dark matter relic density through freeze-out and freeze-in, taking into account the possibility of a late inflationary period that could dilute the dark matter yield of heavy candidates and additional production modes for models with under-abundant thermal production. The parameter space compatible with various experimental and astrophysical constraints is explored, and prospects for discovery using new CMB probes and MeV gamma-ray telescopes are discussed.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Business, Finance
Zhiqiang Ye, Shunming Zhang, Jiefei Zheng
Summary: This study empirically confirms the significant peer effects of PIPEs in Chinese listed companies, and explores their influencing mechanism, which is primarily related to industry information asymmetry and intense competition. The study finds that the peer effects of PIPEs significantly increase short-term firm value, but have no improvement in the long run.
INTERNATIONAL REVIEW OF ECONOMICS & FINANCE
(2023)
Article
Polymer Science
Li-Feng Xu, Zhan-Wen Xu, Jia-Ping Lin, Li-Quan Wang
Summary: This study utilized computational methods to investigate the impact of mixing morphology on the photovoltaic properties of layered heterojunction polymer solar cells. Strategies to adjust the mixing morphology were proposed, potentially guiding the design of photovoltaic materials for optimal performance.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Astronomy & Astrophysics
Luca Comisso, Lorenzo Sironi
Summary: By means of 3D fully kinetic particle-in-cell simulations, we demonstrate that turbulence in low-beta plasmas accelerates ions and electrons into a nonthermal energy distribution, which has important implications for the origin of nonthermal particles in space and astrophysical plasmas.
ASTROPHYSICAL JOURNAL LETTERS
(2022)
Article
Environmental Sciences
T. Manobala, Sudhir K. Shukla, T. Subba Rao, M. Dharmendira Kumar
Summary: This study focuses on the kinetic modeling of uranium biosorption by Deinococcus radiodurans biofilm biomass, indicating the process is spontaneous and exothermic. The sorption of U(VI) by D. radiodurans biofilm biomass is suggested to follow a pseudosecond-order reaction. Chemical modifications in surface functional groups of the biofilm biomass significantly impact uranium binding capacity.
Article
Chemistry, Physical
Brett Scheiner, Tae Jun Yoon
Summary: This paper applies mean force kinetic theory (MFT) to calculate the self-diffusivity of CO2 in the supercritical fluid regime, with two modifications to allow its application to a system of molecular species. The results obtained are in good agreement with molecular dynamics simulations and have greater potential for application to systems of mixed species and long range interatomic potentials due to electrostatic interactions.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
Shreyas Gokhale, Junang Li, Alexandre Solon, Jeff Gore, Nikta Fakhri
Summary: A dynamic clustering phase is observed in mixtures of colloids and motile bacteria, where colloidal clustering is a result of the balance between bond breaking caused by persistent active motion and bond stabilization caused by torques that align active particle velocity tangentially to the passive particle surface.
Article
Astronomy & Astrophysics
Seyong Kim, M. Laine
Summary: Recently, there have been questions regarding how kinetic equilibrium is maintained when freeze-out dynamics is pushed to low temperatures in the context of the scalar singlet dark matter model with a mass of 60 GeV. Langevin simulations are used to address the non-equilibrium momentum distribution of non-relativistic particles in a cosmological background. These simulations suggest that kinetic equilibrium is a good approximation down to temperatures around 1 GeV for scalar singlet masses below 60 GeV, with deviations appearing as a red-tilted spectrum. This confirms that a slightly larger coupling than in equilibrium is needed to obtain the correct abundance, reducing the annihilation cross section.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Review
Engineering, Multidisciplinary
Sixi Zha, Hui-qing Lan, Hui Huang
Summary: This paper summarizes the failure mechanisms of underground polyethylene (PE) pipes and reviews the research on lifetime prediction methods from mechanical and chemical aspects. The paper highlights the limitations in current prediction methods and discusses potential trends in lifetime prediction of PE pipes, proposing a chemo-mechanically coupled model and crack layer (CL) model to reduce empiricism.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2022)
Article
Physics, Multidisciplinary
Alexis Poncet, Aurelien Grabsch, Pierre Illien, Olivier Benichou
Summary: Single-file diffusion involves particles moving in narrow channels without being able to bypass each other, leading to tracer subdiffusion. The study introduces and provides analytical results for generalized correlation profiles (GCPs) within the frame of the tracer, fully characterizing correlations between the tracer position and bath particles density. The analytical approach offers exact results for GCPs in paradigmatic models of single-file diffusion, highlighting the nonmonotonic dependence with distance to the tracer despite symmetry.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
N. K. Razdan, A. Bhan
Summary: The Langmuir-Hinshelwood formalism is inadequate for accurately describing the kinetic details of multi-site ensembles and is not suitable for simple catalytic reactions. It neglects kinetically-consequential islanding/partitioning phenomena and fails to identify rate- and selectivity-determining site ensembles.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Ke Cheng, Peng Liu, Mingcheng Yang, Meiying Hou
Summary: This study experimentally verifies the exponential time correlation characteristic of the active noise experienced by passive objects in an active granular bath. However, the active noise in this system is non-Gaussian.
Article
Engineering, Chemical
Bidan Zhao, Mingming He, Junwu Wang
Summary: The article discusses the challenge of implicitly modeling the particle phase stress model in industrial applications based on classical kinetic theory. By deriving the single particle velocity distribution function with heterogeneous structures at nonequilibrium state and developing constitutive relations, the differences between heterogeneous systems and homogeneous systems are revealed, laying the foundation for a unified EMMS-based constitutive relations.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
A. Madanchi, J. Yu, W. B. Lee, M. R. Rahimi Tabar, S. H. E. Rahbari
Summary: Research has shown that supercooled liquids have structurally different properties from conventional liquids, and using active microrheology based on a local probe can provide a better understanding of local mechanical properties and heterogeneous structures. Through extensive molecular dynamics simulations, it has been identified that there are multiple time scales in the friction time series, and a transition in the dynamical behavior of friction has been detected, possibly related to structural heterogeneities.
Article
Chemistry, Physical
Yurii A. Makhnovskii, Alexander M. Berezhkovskii, Anatoly E. Antipov, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2015)
Article
Chemistry, Physical
Leonardo Dagdug, Marco-Vinicio Vazquez, Alexander M. Berezhkovskii, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2016)
Article
Physics, Multidisciplinary
V. Yu. Zitserman, Yu. A. Makhnovskii, L. I. Trakhtenberg, D-Y. Yang, S. H. Lin
Article
Chemistry, Physical
Leonardo Dagdug, Alexander M. Berezhkovskii, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2017)
Letter
Chemistry, Physical
Leonardo Dagdug, Alexander M. Berezhkovskii, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Chemistry, Physical
Leonardo Dagdug, Alexander M. Berezhkovskii, Yurii A. Makhnovskii, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2008)
Article
Chemistry, Physical
Vladimir Yu. Zitserman, Alexander M. Berezhkovskii, Mark A. Pustovoit, Sergey M. Bezrukov
JOURNAL OF CHEMICAL PHYSICS
(2008)
Article
Chemistry, Physical
Alexander M. Berezhkovskii, Alexander V. Barzykin, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2009)
Article
Chemistry, Physical
Yu A. Makhnovskii, A. M. Berezhkovskii, V. Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2009)
Article
Chemistry, Physical
V. Yu. Zitserman, Yu. A. Makhnovskii, L. Dagdug, A. M. Berezhkovskii
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
(2008)
Article
Physics, Atomic, Molecular & Chemical
Yu. A. Makhnovskii, V. Yu. Zitserman, A. M. Berezhkovskii
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B
(2009)
Article
Physics, Atomic, Molecular & Chemical
A. M. Berezhkovskii, L. Dagdug, V. Yu. Zitserman, Yu. A. Makhnovskii
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B
(2008)
Article
Chemistry, Physical
Leonardo Dagdug, Alexander M. Berezhkovskii, Yurii A. Makhnovskii, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2007)
Article
Chemistry, Physical
Alexander M. Berezhkovskii, Yurii A. Makhnovskii, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2006)