Results 61 to 70 of about 3,655,682 (382)

Implications of a transition in the dark energy equation of state for the H0 and σ8 tensions [PDF]

Journal of Cosmology and Astroparticle Physics, 2019
We explore the implications of a rapid appearance of dark energy between the redshifts (z) of one and two on the expansion rate and growth of perturbations. Using both Gaussian process regression and a parametric model, we show that this is the preferred
R. Keeley, S. Joudaki, M. Kaplinghat, D. Kirkby   +3 more
semanticscholar   +1 more source

On the asymptotic limit of steady state Poisson--Nernst--Planck equations with steric effects [PDF]

arXiv, 2022
When ions are crowded, the effect of steric repulsion between ions becomes significant and the conventional Poisson--Boltzmann (PB) equation (without steric effect) should be modified. For this purpose, we study the asymptotic limit of steady state Poisson--Nernst--Planck equations with steric effects (PNP-steric equations).
arxiv  

Equation of state and singularities in FLRW cosmological models [PDF]

J.Phys.Conf.Ser.229:012037,2010, 2010
We consider FLRW cosmological models with standard Friedmann equations, but leaving free the equation of state. We assume that the dark energy content of the universe is encoded in an equation of state $p=f(\rho)$, which is expressed with most generality in the form of a power expansion.
arxiv   +1 more source

A scalable random forest regressor for combining neutron-star equation of state measurements: a case study with GW170817 and GW190425 [PDF]

Monthly notices of the Royal Astronomical Society, 2020
Gravitational-wave observations of binary neutron star coalescences constrain the neutron-star equation of state by enabling measurement of the tidal deformation of each neutron star.
Francisco Hernandez Vivanco, Rory J. E. Smith, E. Thrane, P. Lasky   +3 more
semanticscholar   +1 more source

Detailed kinship estimation for detecting bias among breeding families in a reintroduced population of the endangered bagrid catfish Tachysurus ichikawai

Population Ecology, EarlyView.
In the process of captive breeding and reintroduction of endangered animal species, it is crucial to minimize familial bias in reproductive success during the reintroduction phase to preserve genetic diversity. In this study, we attempted to identify the familial lineage of individuals of the endangered bagrid fish Tachysurus ichikawai born at the ...
Hinano Mizuno, Kouji Nakayama, Tetsuya Akita, Yasuyuki Hashiguchi, Tomonori Osugi, Hirohiko Takeshima   +5 more
wiley   +1 more source

Self-similar solutions of the spherically symmetric Euler equations for general equations of state [PDF]

arXiv, 2020
The study of spherically symmetric motion is important for the theory of explosion waves. In this paper, we construct rigorously self-similar solutions to the Riemann problem of the spherically symmetric Euler equations for general equations of state.
arxiv  

Evaluating the origin and spread of spotted lanternfly (Lycorma delicatula) in Japan

Population Ecology, EarlyView.
The invasive spotted lanternfly (Lycorma delicatula) is native to China and is a serious economic pest in the Republic of Korea and the United States, though it is not considered a pest in Japan. We established a distribution map of L. delicatula in Japan through a comprehensive review of published literature and citizen science reports and analyzed ...
Matthew T. Kamiyama, Michihiko Takahashi, Hannah J. Broadley, Francesc Gómez‐Marco, Mark S. Hoddle, Kenji Matsuura   +5 more
wiley   +1 more source

Assessing Density-Functional Theory for Equation-Of-State

Computation, 2018
The last decade has seen a continued development of better experimental techniques to measure equation-of-state (EOS) for various materials. These improvements of both static and shock-compression approaches have increased the accuracy of the EOS and ...
Per Söderlind, David A. Young
doaj   +1 more source

Comparison of kinship‐identification methods for robust stock assessment using close‐kin mark–recapture data for Pacific bluefin tuna

Population Ecology, EarlyView.
In this study, we compared three methods for kinship identification using different algorithms in samples of wild Pacific bluefin tuna and generated genotyping data. The three methods resulted in different numbers of inferred kinship pairs for both generated and actual data. Particularly for the half‐sibling pairs, considerable number of false‐positive
Yohei Tsukahara, Reiichiro Nakamichi, Aiko Matsuura, Tetsuya Akita, Atushi Fujiwara, Nobuaki Suzuki   +5 more
wiley   +1 more source

A New Fourth Order Compression Dependent Equation of State

East European Journal of Physics
This study introduces a new first- to fourth-order exponential equation of state (EOS) to enhance accuracy across varying compression levels. The proposed exponential EOS is compared to the widely used fourth-order Birch-Murnaghan EOS, and it not only ...
Abhay P. Srivastava, Brijesh K. Pandey, Anod Kumar Singh, Reetesh Srivastava   +3 more
doaj   +1 more source