Results 21 to 30 of about 1,100,093 (284)
Filtered pseudo-scalar dark matter and gravitational waves from first order phase transition [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 Abstract If dark matter (DM) acquires mass during a first order phase transition, there will be a filtering-out effect when DM enters the expanding bubble. In this paper we study the filtering-out effect for a pseudo-scalar DM, whose mass may partially come from a first order phase transition in the hidden sector.
Chao, Wei, Li, Xiu-Fei, Wang, Lei
openaire +2 more sources
A note on the axioms for Zilber's pseudo-exponential fields [PDF]
, 2011 We show that Zilber's conjecture that complex exponentiation is isomorphic to his pseudo-exponentiation follows from the a priori simpler conjecture that they are elementarily equivalent.
Kirby, Jonathan
core +2 more sources
Removal of mercury (II) from aqueous solution by using rice residues [PDF]
, 2013 Sorption potential of rice residues for Hg(II) removal from aqueous solution was investigated. Rice husk (RH) and rice straw (RS) were selected and treated with sodium hydroxide (NaOH).
Johari, K. +3 more
core +1 more source
Catalysis Communications, 2023 This study reports the kinetics of free fatty acids esterification in waste frying oil, based on a simpler non-conventional pseudo first-order homogeneous reaction mechanism using a highly-efficient acid heterogeneous catalyst derived from seeds of Açaí (
Danilo Gualberto Zavarize +2 more
doaj +1 more source
Non-Hermitian von Roos Hamiltonian's $\eta$-weak-pseudo-Hermiticity, isospectrality and exact solvability [PDF]
, 2007 A complexified von Roos Hamiltonian is considered and a Hermitian first-order intertwining differential operator is used to obtain the related position dependent mass $\eta$-weak-pseudo-Hermitian Hamiltonians. Using a Liouvillean-type change of variables,
Bastard G +19 more
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WELL-POSEDNESS OF THE CAUCHY PROBLEM FOR p-EVOLUTION SYSTEMS OF PSEUDO-DIFFERENTIAL OPERATORS [PDF]
, 2013 We study p-evolution pseudo-differential systems of the first order with coefficients in (t,x) and real characteristics. We find sufficient conditions for the well-posedness of the Cauchy problem in H∞.
Ascanelli, Alessia, Boiti, Chiara
core +1 more source
Isotherm and Kinetics of Fe(II) Adsorption onto Chitosan in a Batch Process [PDF]
Iranica Journal of Energy and Environment, 2011 In this study removal of Fe(II) by chitosan adsorbent was experimentally investigated in a batch system. The adsorbent dose and pH of the metal solution was fixed at 0.15 g and 4, respectively.
Hamideh Radnia +2 more
doaj
Alexandria Engineering Journal, 2022 Kinetic modeling plays a key role in development of large-scale extraction processes. In this study, we modeled the process of extracting essential oils from pomelo (Citrus maxima) peel materials in different kinetics including pseudo first order and ...
Phat T. Dao +4 more
doaj +1 more source
Error Analysis of Absolute Rate Coefficient Extrapolated Under Pseudo-First Order Conditions
Journal of the Turkish Chemical Society, Section A: Chemistry, 2017 Computer-based simulations for the three-body recombination reaction of nitrogen (II) oxide with the hydroxyl radical have been used to estimate the error associated with the pseudo-first order approximation under different simulated conditions.
Luca D'Ottone, Enunuwe Ochonogor
doaj +1 more source
Dynamic Approach to Weak First Order Phase Transitions
, 2000 A short-time dynamic approach to weak first order phase transitions is proposed. Taking the 2-dimensional Potts models as examples, from short-time behaviour of non-equilibrium relaxational processes starting from high temperature and zero temperature ...
A. M. Ferrenberg +27 more
core +2 more sources