Results 21 to 30 of about 1,603 (119)

Concurrent dilution and amplification effects in an intraguild predation eco-epidemiological model

open access: yesScientific Reports, 2023
The dilution and amplification effects are important concepts in the field of zoonotic diseases. While the dilution effect predicts that pathogen prevalence is negatively correlated with increased species diversity, the opposite trend is observed when ...
Enith A. Gómez-Hernández   +3 more
doaj   +1 more source

BPS multi-vortices in chiral perturbation theory [PDF]

open access: yesEPJ Web of Conferences
We show that a BPS bound can be derived from chiral perturbation theory minimally coupled to electrodynamics at a finite isospin chemical potential.
Vera Aldo
doaj   +1 more source

Relación entre carga física y síndrome metabólico en trabajadores del sector metal-mecánico

open access: yesRevista Colombiana de Salud Ocupacional, 2015
La carga física de trabajo y la jornada laboral extendida son una práctica importante, cuando las exigencias físicas superan la capacidad física de los trabajadores, ocasionan fatiga, cambio de hábitos (sedentarismo, dietas hiper-calóricas y grasas ...
José Ruano Montenegro   +3 more
doaj   +1 more source

Consistent and non-consistent deformations of gravitational theories

open access: yesJournal of High Energy Physics, 2022
We study the internally abelianized version of a range of gravitational theories, written in connection tetrad form, and study the possible interaction terms that can be added to them in a consistent way. We do this for 2+1 and 3+1 dimensional models. In
J. Fernando Barbero G.   +3 more
doaj   +1 more source

Mathematical Analysis and Numerical Solution of a Model of HIV with a Discrete Time Delay

open access: yesMathematics, 2021
We propose a mathematical model based on a set of delay differential equations that describe intracellular HIV infection. The model includes three different subpopulations of cells and the HIV virus.
Abraham J. Arenas   +4 more
doaj   +1 more source

Structure and Dynamics of Water at Carbon-Based Interfaces

open access: yesEntropy, 2017
Water structure and dynamics are affected by the presence of a nearby interface. Here, first we review recent results by molecular dynamics simulations about the effect of different carbon-based materials, including armchair carbon nanotubes and a ...
Jordi Martí   +2 more
doaj   +1 more source

Collaboration between predators and weak Allee effect in prey. Consequences on the dynamics of a predation model

open access: yesSelecciones Matemáticas, 2022
The interactions between predators and their prey in the real world are usually affected by diverse ecological phenomena acting on both the prey and the predators.
Eduardo González-Olivares   +1 more
doaj   +1 more source

Nonequilibrium Phenomena in Confined Systems

open access: yesEntropy, 2017
Confined systems exhibit a large variety of nonequilibrium phenomena. In this special issue, we have collected a limited number of papers that were presented during the XXV Sitges Conference on Statistical Mechanics, devoted to “Nonequilibrium phenomena ...
Giancarlo Franzese   +2 more
doaj   +1 more source

Fabricación de nanoestructuras por ablación láser y su uso en SERS con bajo umbral de detección: el caso de Ag-Nps

open access: yesMundo Nano, 2019
En este trabajo presentamos la fabricación de nanopartículas de plata (Ag-NPs) por medio de ablación láser (AL) en medio acuoso, y su aplicación como elementos de realce de señales Raman a través de procesos tipo SERS.
V. Alonso Camarena-Chávez   +6 more
doaj   +1 more source

Conceptual Framework for the Strategic Management: A Literature Review—Descriptive

open access: yesJournal of Engineering, Volume 2020, Issue 1, 2020., 2020
The objective of this work is to review the literature of the main concepts that lead to determining the strategic approach, creation of strategies, organizational structures, strategy formulation, and strategic evaluation as a guide for the organizational management, taking into account the effects produced by the different types of strategies on the ...
Guillermo Fuertes   +6 more
wiley   +1 more source

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