Results 51 to 60 of about 2,857,029 (351)
International Journal of Cancer, EarlyView.Chromosomal instability is a hallmark of cancer, but minimally invasive ways to detect systemic DNA damage and cancer risk remain limited. Here, using patient blood samples, the authors investigated lymphocyte micronuclei (MN) frequency as a potential marker of DNA damage across the progression from gastroesophageal reflux disease to Barrett's ...
Kathryn Munn +13 more
wiley +1 more source
Revista del Museo de Antropologia, 2015 Nos proponemos analizar un proceso de comunalización situado en parajes rurales de la cuenca del arroyo Comallo, provincia de Río Negro. En agosto de 2011 se conformó formalmente allí la comunidad mapuche Newen Ñuke Mapu que pasó a integrarse a las ...
Lorena Cañuqueo +2 more
doaj +1 more source
Ideas previas y cambio conceptual
, 2018 Las ideas previas, tambien conocidas con muchas otras denominaciones, se han investigado desde los anos 70 en muchos paises y se ha puesto ampliamente de relieve su importancia en la ensenanza y el aprendizaje de la ciencia.
S. Bello
semanticscholar +1 more source
A simple index for assessing cumulative human impacts on mountain lakes
Limnology and Oceanography: Methods, EarlyView.Abstract Mountain lakes are highly sensitive ecosystems and effective sentinels of environmental change, yet the exposure and magnitude of the human footprint remain poorly quantified. In this study, we develop a simple and non‐invasive abiotic index to assess cumulative pressures on mountain lakes. The proposed index integrates eight variables grouped
Clara Sáez +3 more
wiley +1 more source
On the construction of group invariant non expansive operators [PDF]
, 2018 In questa tesi vengono illustrati metodi di topologia computazionale negli ambiti di topological data analysis e shape comparison. Nello specifico, dato uno spazio topologico X e un sottogruppo G di Homeo(X), viene studiato un set di dati Φ composto da ...
Camporesi, Francesco
core
Las TICs en las empresas: evolución de la tecnología y cambio estructural en las organizaciones
, 2018 El proposito del presente articulo, es analizar la importancia del cambio estructural de las organizaciones empresariales, de cara a la evolucion de la tecnologia, especialmente la implementacion y uso de las Tic’s en las empresas y los cambios en la ...
Galo E. Cano-Pita +1 more
semanticscholar +1 more source
Nuevas (viejas) políticas migratorias en la Argentina del cambio
Si Somos Americanos, 2018 espanolDesde el cambio de gestion presidencial ocurrido en Argentina a fines del ano 2015. distintos referentes del campo migratorio comenzaron a sospechar un inminente "cambio de paradigma" respecto de la cuestion. Estos precoces temores se afirmaron en
B. Canelo +2 more
semanticscholar +1 more source
Public Administration and Development, EarlyView.ABSTRACT Although some studies focus on how bureaucrats' interactions with one another affect performance, they rarely focus on why these public servants collaborate. Bureaucrats' collaboration matters because it can significantly contribute to achieving policy goals.
Nathalie Mendez
wiley +1 more source
Scientia Marina, 2019 Saharan dust events are currently the predominant source of lithogenic particles in the Canary Basin. In order to quantify this input and its relationship with the biogenic fluxes, a sediment trap was deployed in a free-drifting system at 150 m depth, 50
Maite Báez-Hernández +8 more
doaj +1 more source
Agronomía Mesoamericana, 2019 Introducción. Se espera que, a consecuencia del cambio climático, cultivos como el café (Coffea arabica L.), maíz (Zea mays) y frijol (Phaseolus vulgaris L.) sean menos productivos en América Central.
Bárbara Viguera +5 more
semanticscholar +1 more source