Buscar
Mostrando ítems 1-10 de 2170
Intratumor heterogeneity index of breast carcinomas based on DNA methylation profiles
(BioMed Central, 2019-04)
Background: Cancer cells evolve and constitute heterogeneous populations that fluctuate in space and time and are subjected to selection generating intratumor heterogeneity. This phenomenon is determined by the acquisition ...
Equal channel angular sheet extrusion (ECASE) produces twinning heterogeneity in commercially pure titanium
(Elsevier, 2021-11)
Commercially pure grade 2 titanium in sheet form was processed by equal channel angular sheet extrusion (ECASE) up to two passes at room temperature. The ECASE process generated a heterogeneous state of deformation, mainly ...
Diffusion of interacting particles in one-dimensional heterogeneous systems
(Elsevier Science, 2006-05-01)
The equilibrium and transport properties of interacting ad-particles on bivariate heterogeneous chains are studied by combining analytical and simulation approaches. Heterogeneity is introduced in the way of patches of ...
Adsorption of dimers on heterogeneous surfaces: Scaling behavior for the adsorption isotherms
(Elsevier Science, 2002-08-15)
The localized monolayer adsorption of homonuclear dimers on heterogeneous surfaces with simple topographies is analyzed by combining theoretical modeling and Monte Carlo (MC) simulations. The heterogeneous surfaces are ...
An empirical exploration of geographic heterogeneities in labor markets informality and minimum wage effects
(Universidad Nacional de Misiones. Facultad de Ciencias Económicas. Programa de Posgrado en Administración, 2021-01-29)
Dual labor markets, defined by the existence or not of a formal labor contract, are a widespread feature in developing countries. Part of this duality results from marked asymmetries between relevant groups and categories, ...
Adapting distributed evolutionary algorithms to heterogeneous hardware
(Springer, 2015-12)
Distributed computing environments are nowadays composed of many heterogeneous computers able to work cooperatively. Despite this, the most of the work in parallel metaheuristics assumes a homogeneous hardware as the ...
Differences in the heterogeneous nature of hydriding/dehydriding kinetics of MgH2 - TiH2 nanocomposites
(Pergamon-Elsevier Science Ltd, 2020-10)
Fine powder dispersions of MgH2 - TiH2 composites were obtained through different manufacturing routes using reactive mechanical grinding. The as prepared powder dispersions were subjected to hydrogen sorption kinetics and ...
A general framework to understand parallel performance in heterogeneous clusters: Analysis of a new adaptive parallel genetic algorithm
(Academic Press Inc Elsevier Science, 2005-12)
This paper presents a general model to define, measure and predict the efficiency of applications running on heterogeneous parallel computer systems. Using this framework, it is possible to understand the influence that ...
Environmental heterogeneity determines the ecological processes that govern bacterial metacommunity assembly in a floodplain river system
(Nature Publishing Group, 2020-12-27)
How diversity is structured has been a central goal of microbial ecology. In freshwater ecosystems, selection has been found to be the main driver shaping bacterial communities. However, its relative importance compared ...
Paddock Size Mediates the Heterogeneity of Grazing Impacts on Vegetation
(Society for Range Management, 2018-07)
Domestic herbivores’ effect on vegetation is spatially heterogeneous, being one of the major causes of forage resources degradation. It has been proposed that paddock size controls grazing impact’s heterogeneity because ...