Results 31 to 40 of about 341,013 (222)

Evidence of Quaternary tectonics along Río Grande valley, southern Malargüe fold and thrust belt, Mendoza, Argentina [PDF]

open access: yes, 2019
The Malargüe fold and thrust belt is developed in the Argentinian Andes between 34° and 37° S, through the tectonic inversion of Upper Triassic and Lower Jurassic depocenters of the Neuquén Basin, with an uplift history since the Cretaceous.
Colavitto, Bruno   +4 more
core   +1 more source

Arbuscular mycorrhiza in the urban jungle: Glomeromycotina communities of the dominant city tree across Amsterdam

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Trees in cities provide a great number of benefits to people and nature, but they are challenged by harsh conditions. Trees rely on helpful fungi in their roots to get essential nutrients from the soil, but we do not know which of these fungi are resistant to city landscapes.
Casper T. Verbeek   +2 more
wiley   +1 more source

Vegetación arbórea de selvas bajas caducifolias en suelos litosoles y regosoles eutricos degradados

open access: yesTerra Latinoamericana, 2020
En México, las selvas bajas caducifolias (SBC) son perturbadas por actividades agrícolas. Su regeneración origina el restablecimiento de vegetación arbórea secundaria que, con menor cobertura vegetal y arraigo, produce suelos termófilos e hidrófobos ...
Verónica Ortega-Baranda   +4 more
doaj   +1 more source

Fusiones horizontales que reducen los precios [PDF]

open access: yes, 2003
Este trabajo desarrolla un modelo de equilibrio de un mercado con diferenciación horizontal de productos en el cual las empresas fijan los precios de las variedades que proveen y, en ciertos casos, alguna de ellas actúa como líder de precios.
Coloma, Germán
core  

Efficient preliminary floating offshore wind turbine design and testing methodologies and application to a concrete spar design [PDF]

open access: yes, 2015
The current key challenge in the floating offshore wind turbine industry and research is on designing economic floating systems that can compete with fixed-bottom offshore turbines in terms of levelized cost of energy. The preliminary platform design, as
Campos Hortigüela, Alexis   +4 more
core   +2 more sources

Snapshots of Motion: A Novel Structural Intermediate Reveals Conserved Dynamics in Archaeal DNA Ligases

open access: yesProteins: Structure, Function, and Bioinformatics, EarlyView.
ABSTRACT We present the first x‐ray crystallographic structural evidence of an archaeal DNA ligase showing the AMP covalent adduct together with further cofactor hydrolysis, capturing a transient intermediary in the first step of the ligation reaction, triggered by the pyrophosphate hydrolysis.
A. X. Quintana‐Armas   +3 more
wiley   +1 more source

Evidence of a new electromagnetic resonance discovered at Teoloyucan geomagnetic station, México?

open access: yesGeofísica Internacional, 2008
Se presenta evidencia de una nueva estructura de resonancias geomagnéticas observada en la estación Teoloyucan, México (ERT, Estructura de las Resonancias en Teoloyucan) en el periodo 1999–2001.
A. Kotsarenko   +6 more
doaj   +1 more source

Effects of inherited structures on inversion tectonics: Examples from the Asturian Basin (NW Iberian Peninsula) interpreted in a Computer Assisted Virtual Environment (CAVE) [PDF]

open access: yes, 2018
Map shows mid-nineteenth century Texas counties, major cities, towns, roads, railroads, and areas of Native American habitation. Includes detailed notes on map.
Hodei Uzkeda   +52 more
core   +1 more source

Fight song: variation in singing behaviour and song structure during natural agonistic interactions in a tropical songbird, Adelaide's Warbler (Setophaga adelaidae)

open access: yesIbis, EarlyView.
Birds may use their singing behaviours and song structure as agonistic signals in territorial encounters. We conducted an observational study to test this hypothesis in male Adelaide's Warblers Setophaga adelaidae, a tropical songbird that defends a territory year‐round.
Peter C. Mower   +4 more
wiley   +1 more source

Evaluaci?n de la composici?n flor?stica, la estructura y la diversidad de tres bosques secos tropicales en el alto Magdalena, departamento del Tolima [PDF]

open access: yes, 2018
80 p. Recurso Electr?nicoSe evalu? la composici?n flor?stica y estructural de tres bosques secos tropicales en el alto Magdalena, ubicados en el sur-oriente (bosque La Flor), centro (bosque El Neme) y norte (bosque la Zorra) del departamento del Tolima ...
Fonseca Pe?a, Lina Mar?a   +1 more
core  

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