Listar DMDCSCE - Artículos por fecha de publicación
Mostrando ítems 1-20 de 131
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Red deer females collect on male clumps at mating areas.
Carranza, Juan; Valencia-Ruíz, Juliána
(Oxford University Press, 1999-09-01)
En especies de mamíferos poligínicos como el ciervo, se asume que las hembras se distribuyen en el espacio en función de la distribución de los recursos que ellas necesitan y que son los machos los que se desplazan para ... -
Testosterone and helping behavior in the azure-winged magpie (Cyanopica cyanus): natural covariation and an experimental test
de la Cruz, Carlos; Solís, Elena; Valencia-Ruíz, Juliána; Chastel, Olivier; Sorci, Gabriele (Springer, 2003)
In this study, we investigated patterns of natural covariation between testosterone and reproductive status in a cooperatively breeding bird species, the azure- winged magpie (Cyanopica cyanus). To assess the relationship ... -
Flexible Helping Behaviour in the Azure-Winged Magpie
Valencia-Ruíz, Juliána; De la Cruz, Carlos; González, Beatriz (Blackwell Verlag, 2003-07-01)
Helping to rear the offspring of others may be a way for younger birds to gain access to future reproduction especially when turnover of breeding opportunities is low. However, this explanation is not applicable to cases ... -
El Cuaternario reciente en el sector oriental de la bahía de Málaga. Rasas y depósitos marinos, continentales y arqueológicos
Ferre Bueno, Emilio; Ramos Fernández, Julián; Cortés Sánchez, Miguel; Aguilera López, Raúl; Senciales González, José María; Lozano-Francisco, María del Carmen; Navarrete Rodríguez, Irene; Vera-Peláez, José L.[et al.] (AEQUA, 2004)
La franja costera El Candado-La Araña, que ocupa la parte oriental del municipio de Málaga, dispone de un modelado que responde a un origen poligénico, estrechamente vinculado a los cambios eustáticos del nivel del mar. ... -
Disposable-soma senescence mediated by sexual selection in an ungulate
Carranza, Juan; Alarcos, Susana; Sánchez-Prieto, Cristina B.; Valencia-Ruíz, Juliána; Mateos, Concha (2004-11-11)
Senescence may result from an optimal balance between current reproductive investment and bodily repair processes required for future reproduction1, a theoretical prediction difficult to prove especially in large, long-lived ... -
Positive Correlation between Helpers at Nest and Nestling Immune Response in a Cooperative Breeding Bird.
Valencia-Ruíz, Juliána; Solís, Elena; Sorci, Gabriele; de la Cruz, Carlos (Springer Nature, 2006)
In cooperatively breeding species, helpers may contribute to the success of the brood by increasing the number of independent offspring, but also, they may affect offspring condition and, hence, their survival and recruitment ... -
Parents increase their parental effort when aided by helpers in a cooperatively breeding bird.
Valencia-Ruíz, Juliána; de la Cruz, Carlos; Carranza, Juan; Mateos, Concha (Elsevier, 2006-05)
In cooperatively breeding species, parents may be assisted by other individuals to feed the young. How breeding parents react when they receive help is poorly understood. Evidence suggests that parents usually maintain ... -
Assessing understanding in mathematics: steps towards an operative model
Gallardo-Romero, Jesús; González-Mari, José Luis (FLM PUBLISHING ASSOCIATION, 2006-06)
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Effect of NaCl on the Self-Aggregation of n-Octyl â-D-Thioglucopyranoside in Aqueous Medium.
Molina-Bolivar, Jose Antonio; Hierrezuelo-Osorio, José Manuel; Carnero-Ruiz, Cristóbal (ACS, 2006-06-22)
This report investigates the effect of sodium chloride (NaCl) on the micellization, surface activity, and the evolution in the shape and size of n-octyl â-D-thioglucopyranoside (OTG) aggregates. By using surface ... -
Physicochemical Studies on the Interaction between N-Decanoyl-N-methylglucamide and Bovine Serum .
Carnero-Ruiz, Cristóbal; Hierrezuelo-Osorio, José Manuel; Aguiar-García, Juan; Peula-García, José Manuel (ACS, 2007-07-13)
The protein-surfactant system constituted by bovine serum albumin (BSA) and N-decanoyl-N-methylglucamide (MEGA-10) has been studied by using surface tension, steady-state fluorescence, and dynamic light scattering measurements. ... -
Interpretando la comprensión matemática en escenarios básicos de valoración. Un estudio sobre las interferencias en el uso de los significados de la fracción.
(Comité Latinoamericano de Matemática Educativa, 2008) -
How should breeders react when aided by helpers?
Carranza, Juan; Polo, Vicente; Valencia-Ruíz, Juliána; Mateos, Concha; de la Cruz, Carlos (Elsevier, 2008-01)
In cooperatively breeding systems, breeders may reduce their provisioning to the brood when aided by helpers. However, this is found in only some species, and the reasons for the different reactions of breeders are far ... -
Sex-specific strategies of dentine depletion in red deer
Carranza, Juan; Mateos, Concha; Alarcos, Susana; Sánchez-Prieto, Cristina B.; Valencia-Ruíz, Juliána (Oxford Academic, 2008-02-04)
Worn teeth in herbivore ungulates may be related to lower efficiency in mastication and hence lower performance. However, selection should favour maximal performance in terms of body mass and reproductive capacity during ... -
Winter male plumage coloration correlates with breeding status in a cooperative breeding species
Solís, Elena; Avilés, Jesús M.; de la Cruz, Carlos; Valencia-Ruíz, Juliána; Sorci, Gabriele (Oxford University Press, 2008-03)
The function of colored ornaments is usually related to the signaling of individual quality in intra- and intersexual interactions. In cooperative breeding species, where only a fraction of the male population access the ... -
Fluctuating asymmetry of red deer antlers negatively relates to individual condition and proximity to prime age
Mateos, Concha; Alarcos, Susana; Carranza, Juan; Sánchez-Prieto, Cristina B.; Valencia-Ruíz, Juliána (Elsevier, 2008-09)
After about 50 years of research on fluctuating asymmetry (FA) as a reliable indicator of both individual quality and environmental stress, the enthusiasm is beginning to decline. The findings of many studies are inconsistent ... -
Diversidad estructural y semiótica en el proceso didáctico de ampliación de los naturales a los enteros: un estudio sobre comprensión en el campo de la relatividad aditiva.
González Marí, José Luis; Rico Romero, Luis; Gallardo Romero, Jesús (GI HUM-746 y Editorial Universidad de Almería, 2009)
Introducción. En el proceso didáctico de ampliación de los naturales a los enteros interviene un tipo de medidas cuya integración en los sistemas numéricos conocidos – naturales y enteros - no es inmediata ni correcta. Por ... -
On the Urea Action Mechanism: A Comparative Study on the Self-Assembly of Two Sugar-Based Surfactants.
Hierrezuelo-Osorio, José Manuel; Molina-Bolivar, Jose Antonio; Carnero-Ruiz, Cristóbal (ACS, 2009-04-24)
Studies on the effect of urea on micelle formation and structure of n-octyl- -D-thioglucoside (OTG) and N-decanoyl-N-methylglucamide (MEGA-10) were carried out by using the steady-state and time-resolved fluorescence ... -
¿Qué comprensión de la fracción fomentan los libros de texto de matemáticas peruanos?
Quispe Yapo, Wenceslao; Gallardo Romero, Jesús; González Marí, José Luis (Universidad de Granada. Grupo FQM-193 PAIDI Junta de Andalucía, 2010)
Para valorar la comprensión de la fracción en Perú desde una perspectiva curricular, realizamos un análisis de 20 libros de texto peruanos de matemáticas (1963-2005). El análisis se fundamenta en la dimensión fenómeno-ep ... -
Probing Nanometer-Thick Polyelectrolyte Layers Adsorbed on Oppositely Charged Particles by Dynamic Light Scattering
Hierrezuelo-Osorio, José Manuel; Szilagyi, Istvan; Vaccaro, Andrea; Borkovec, Michal (ACS, 2010-10-06)
The thickness of adsorbed polyelectrolyte layers on oppositely charged particles can be measured by dynamic light scattering (DLS) with a precision of fractions of a nanometer. However, such data can be only reliably ... -
On a control problem governed by a linear partial differential equation with a smooth functional
Criado-Aldeanueva, Francisco; Criado, Francisco; Odishelidze, Nana; Sánchez-Sáez, José María (Wiley Online Library, 2010-11-29)
El artículo analiza un problema de control óptimo para la ecuación de Helmholtz con condiciones de frontera no locales. Hay que destacar que no se pueden aplicar las herramientas tradicionales debido a la naturaleza de las ...