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Respuestas agonísticas en ratas sometidas a frustración
(Fundación Universitaria Konrad Lorenz, 2000-12)
Las ratas condicionadas a consumir 32% de solución azucarada sufren un efecto de frustración cuando se les cambia la solución a una no preferida (4% ó 2% de la misma solución). Se expresa con una disminución brusca del ...
Effects of testosterone administration and gonadectomy on incentive downshift and open field activity in rats
(Pergamon-Elsevier Science Ltd, 2012-07)
Previous research showed that the effects of incentive downshift in male rats are attenuated by a pretrial opportunity to ejaculate. Because ejaculation raises testosterone (T) levels and has anxiolytic-like effects in ...
Successional changes in soil nitrogen availability, non-symbiotic nitrogen fixation and carbon/nitrogen ratios in southern chilean forest ecosystems
(Springer, 2004)
Vast areas of southern Chile are now covered by second-growth forests because of fire and logging. To study successional patterns after moderate-intensity, anthropogenic fire disturbance, we assessed differences in soil ...
On the seasonal effect of landscape structure on a bird species: the thorn-tailed rayadito in a relict forest in northern Chile
(SPRINGER, 2007-08)
Forest bird species exhibit noticeable seasonal behavioral changes that might lead to contrasting effects of landscape pattern upon species abundance and performance. We assessed if the effect of patch and habitat attributes ...
Paleoenvironmental implications of two phosphogenic events in Neoproterozoic sedimentary successions of the Tandilia System, Argentina
(Elsevier Science, 2014-07)
Two phosphogenic events of potential economic importance (preserving P2O5 abundances up to 25 and 35%, respectively) are recognized in the Neoproterozoic Tandilia System. The older of the two lies atop a quartz-arkosic ...
Scale-dependent effects of conspecific flower availability on pollination quantity and quality in an invasive shrub
(Springer, 2018-10)
Pollen limitation can strongly influence reproduction of pollinator-dependent plants. Flower abundance can affect pollination ‘quantity’ and ‘quality’ due to its influence on pollen availability and foraging patterns of ...
A clinical combined gadobutrol bolus and slow infusion protocol enabling angiography, inversion recovery whole heart, and late gadolinium enhancement imaging in a single study
(2016)
Abstract
Background
The use of gadolinium contrast agents in cardiovascular magnetic resonance is well-established and serves to improve both vascular imaging as well as ...
Management of invasive Pinaceae is imperiled by the lack of invasive ungulate control: successful restoration requires multiple-species management
(Springer, 2019-10-08)
The magnitude and direction of an invasive species’ impact may be determined by its co-existence and interaction with other species. In Argentina, wild boar, red deer, and fallow deer are introduced mammals that have ...
Propranolol reverses open field effects on frustration
(Elsevier, 2014-12)
Reactivity to a reward is affected by prior experience with different reinforcer values of that reward, a phenomenon known as incentive relativity. Incentive relativity can be studied via the consummatory successive negative ...
Motivation Alignment, Historical Cleavages, and Women's Suffrage in Latin America
(2022)
Calculations of the electoral effects of incorporating new voters and beliefs on how inclusion alters gender hierarchies constitute two central motivations of decision makers when facing the prospect of suffrage reform. ...