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Search Results: 1 - 10 of 8148 matches for " VERóNICA CHILLO "
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SELECCIóN DE DIETA DE CONEJO DE LOS PALOS (Pediolagus salinicola) Y MARA (Dolichotis patagonum) DURANTE LA ESTACIóN SECA EN UN SITIO DE COEXISTENCIA
MARíA VERóNICA CHILLO
Mastozoolog?-a neotropical , 2008,
Abstract:
Historia natural de un roedor raro del desierto argentino, Salinomys delicatus (Cricetidae: Sigmodontinae) Natural history of a rare rodent of the Argentinean desert, Salinomys delicatus(Cricetidae: Sigmodontinae)
DANIELA RODRíGUEZ,CECILIA LANZONE,VERóNICA CHILLO,PABLO A CUELLO
Revista chilena de historia natural , 2012,
Abstract: El ratón delicado de los salares (Salinomys delicatus) es un peque o roedor endémico de Argentina. Ha sido considerado como vulnerable a la extinción dada su distribución restringida y en parches, tama o poblacional peque o y especialización en hábitats salinos. A pesar de que el ratón delicado tiene adaptaciones morfológicas y fisiológicas para la supervivencia en ambientes áridos y salitrosos, poco es lo que se conoce de su historia natural. El presente trabajo tiene como objetivo estudiar la historia natural de S. delicatus, reportar nuevas localidades de ocurrencia, caracterizar el uso de hábitat, su dieta y el ensamble acompa ante, y describir su biología reproductiva y morfología. Se registraron dos nuevos sitios de ocurrencia en ambientes de bosques en galería y bajos salinos en la región noreste de la provincia de Mendoza (Argentina), siendo las primeras citas para esta provincia. S. delicatus presenta una dieta omnívora, como es frecuente en otros roedores de desierto, y consume en igual medida semillas, artrópodos y plantas halófitas. El ensamble acompa ante está compuesto por no más de tres especies de peque os mamíferos que varían según la localidad, siendo esta riqueza similar a otros sitios del Monte. La proporción de sexos y el patrón de dimorfismo sexual mostraron un marcado desvío hacia las hembras (H:M = 3.6:1.1 y H:M = 1.151 respectivamente). La morfología externa y craneal presenta una importante variabilidad intra e interpoblacional, sugiriendo que el aislamiento juega un rol importante. Cuando se consideraron adultos y juveniles, conjuntamente dos de las seis medidas externas (longitud total y longitud de cabeza y cuerpo) y siete de las 22 medidas craneales resultaron significativamente mayores en hembras que en machos. Cuando se compararon solo los adultos, cuatro características externas (longitud total, longitud de cabeza y cuerpo, largo de la cola y peso) y seis medidas craneales fueron significativamente mayores en hembras que en machos. Este trabajo refuerza la importancia del desarrollo de nuevos estudios más detallados sobre la historia de vida de S. delicatus y permite reafirmar la importancia de conservación de esta especie. The delicate mouse (Salinomys delicatus) is a small rodent endemic of Argentina. It has been considered vulnerable to extinction because of its restricted and patchy distribution, small population size and specialization on salty habitats. Besides its morphological and physiological adaptations to survive in arid and salty habitats, there is still little information about the natural history of the del
Dry season diet composition of Eligmodontia moreni (Rodentia, Cricetidae, Sigmodontinae) in a hyper-arid region of the Monte desert (Mendoza, Argentina)
Cecilia Lanzone,Verónica Chillo,Daniela Rodríguez,María Ana Dacar
Multequina , 2012,
Abstract: Presentamos la dieta de Eligmodontia moreni durante la estación seca en una región hiperárida del desierto del Monte. Encontramos diferencias en el consumo de las diferentes categorías, resultando las hojas y los artrópodos los ítems más utilizados, seguidos por las semillas. A pesar del elevado consumo de hojas, la especie debe considerarse omnívora con tendencia a la herbivoría debido a la elevada variabilidad en su dieta. Los altos porcentajes de artrópodos en la dieta no han sido registrados para otras especies del género. E. moreni muestra una importante flexibilidad en la dieta lo cual puede resultar ventajoso en ambientes donde los recursos tróficos son escasos e impredecibles.
Historia natural de un roedor raro del desierto argentino, Salinomys delicatus (Cricetidae: Sigmodontinae)
RODRíGUEZ,DANIELA; LANZONE,CECILIA; CHILLO,VERóNICA; CUELLO,PABLO A; ALBANESE,SOLEDAD; OJEDA,AGUSTINA A; OJEDA,RICARDO A;
Revista chilena de historia natural , 2012, DOI: 10.4067/S0716-078X2012000100002
Abstract: the delicate mouse (salinomys delicatus) is a small rodent endemic of argentina. it has been considered vulnerable to extinction because of its restricted and patchy distribution, small population size and specialization on salty habitats. besides its morphological and physiological adaptations to survive in arid and salty habitats, there is still little information about the natural history of the delicate mouse. the objectives of our study are to study the natural history of s. delicatus, report new localities of occurrence, characterize its habitat use, diet and accompanying assemblages and describe its reproductive biology and morphology. we report two new localities of occurrences in gallery woodlands and salt flats in the northeast of mendoza province (argentina), these being the first records for this province. like other south aamerican rodents, s. delicatus has an omnivorous diet consisting in similar proportion of seeds, arthropods and halophytic plants. the assemblages are composed by no more than three small mammal species, varying according to the locality. sex ratio and the pattern of sexual dimorphism shows a strong bias towards females (h:m = 3.6:1.1 and h:m = 1.151 respectively). external and cranial morphology exhibits a clear intra- and inter-population variability. when considering in the analysis adults and juvenile, two of six external measurements (head and body length and total length) and seven of twenty-two cranial measurements were significantly higher in females than in males. when considering only adults, four external measures (total length, head and body length, tail length and weight) and six cranial measurements were significantly higher in females than in males. this integrative analysis highlights the relevance of conducting further and more detailed studies on the natural history of s. delicatus and allows us to reassert the conservation importance of this species.
Location of Large-Scale Concentrating Solar Power Plants in Northeast Brazil  [PDF]
Vernica Wilma Bezerra Azevedo, Chigueru Tiba
Journal of Geographic Information System (JGIS) , 2013, DOI: 10.4236/jgis.2013.55043
Abstract: Heliothermic electricity generation is gaining popularity in several countries worldwide. In Brazil, this form of energy generation has not yet been explored for large scale projects. However, the country possesses extensive areas with normal and high-intensity direct irradiation and low seasonality factors, particularly in the semi-arid region of the Brazilian Northeast. The region also presents other important features for setting up such plants: proximity to transmission lines, sufficient flatness, non-endangered vegetation, a suitable land use profile low maximum wind speeds, low population density, and more recently, an increase in the demand for local electric energy due to economic growth above the Brazilian average. A Geographic Information System includes a set of specialised resources that allow us to manipulate spatial data, providing quickness and efficiency in the identification of appropriate places for installing solar power plants while also preparing us for future scenarios, with regards to their impacts, costs and benefits. This article presents a study of the optimal location for thermoelectric power plants in the semi-arid region of the Brazilian Northeast on the scale of 1:10,000,000. All provinces with good potential for the implementation of large-scale concentrating solar power plants are identified. Considering that the installed capacity for parabolic cylindrical concentrators in terrains with a steepness of less than 1% is 43.26 MW/km2 for systems without storage and 30.82 MW/km2 for systems with 6 hours of storage, the potential of the southeast region of Piauí alone is huge. Even with the lack of information about the urban areas, terrain continuity, and other variables,utilising only 10% of the identified potential area, or879.7 km2, would result in an installed capacity of 38.1-27.1 GW. This value corresponds to more than 1/3 of the potency of the current Brazilian electric system. If the same calculation is made for the semi-arid region of the Brazilian Northeast, its capacity will be greater than 1000 GW.
Abnormal Succession of Insect Fauna on Pig Carcasses in Tandil (Argentina, Buenos Aires Province)  [PDF]
A. Verónica Trigo, Néstor Centeno
Advances in Entomology (AE) , 2014, DOI: 10.4236/ae.2014.22017
Abstract: This project was an attempt to reconstruct a death in dubious circumstance which happened in December 2002 in Tandil (Buenos Aires Province). Although the body was in open air, the entomological expertise discovered signs of delayed colonization. In this experiment, pig carcasses used as models to reconstruct the case. One was placed in shadow and another in sunlight (control). The hypothesis was that the climate and the topography affect the necrophagous insect succession in a mountain site. The families of Coleoptera found on the baits were: Silphidae, Dermestidae, Cleridae, Histeridae; of Díptera: Calliphoridae, Sarcophagidae; Asilidae; of Hymenoptera: Formicidae, Encyrtidae and Vespidae.
Landscape Connectivity Approach in Oceanic Islands by Urban Ecological Island Network Systems with the Case Study of Santa Cruz Island, Galapagos (Ecuador)  [PDF]
Verónica Lorena Andrade Sierra, Xuan Feng
Current Urban Studies (CUS) , 2018, DOI: 10.4236/cus.2018.64031
Abstract:
The oceanic islands are well known for their high biodiversity where the dynamic integration of the ecosystems inside the populated islands is such as a living laboratory of ecological and social relations of interdependence. Oceanic islands are experimenting significant pressure on their ecosystems. Habitat fragmentation produces poor spatial connectivity between protected areas and human settlements. The essence of the research approach is to develop a new framework of Oceanic Island Network System based on urban ecological networks in dealing with island connectivity issues space. This new urban ecological planning tool can help to generate an integrator balance by a physical linkage system in a socio-ecosystem island. Facilitating the territorial ordering based on the spatial and functional relations between ecological functions and urban structure through the island network system has not been analyzed yet as an essential resource for integrating the natural and human systems in oceanic islands. This paper presents a landscape theory connectivity analysis of the built space vs. the natural space of oceanic islands with the case study of Santa Cruz Island, Galapagos into the Pelican Way Watershed boundaries. In this context, spatial network elements are considered under land movement concept. The analysis is intended to determine the spatial elements interrelationships by socio-ecological networks establishing a new landscape system strategy. Additionally, it is valuable and necessary to establish a new concept of land use network for oceanic islands, such as a potential resource to generating a physical structure of environmental balance connectivity, which includes social needs and ecological potentialities for successful urban ecological conservation and development.
Síndrome de Cowden: A propósito de una familia afectada
Blanco,Verónica; Keochgerián,Verónica;
Medicina Oral, Patología Oral y Cirugía Bucal (Internet) , 2006,
Abstract: cowden?s syndrome is a rare genodermatosis characterized by multiple hamartomas in several tissues and organs derived from all three embryonic layers. clinical features of cowden?s disease are explained by the mutation of the pten tumour suppressor gene, whose modification leads to an uncoordinated growth of tissues. the importance of this disease lies in the increased susceptibility to malignization of some lesions, specially breast, thyroid and genito-urinary tract lesions. as a result, the disease has been considered a preneoplasic condition. despite its varied phenotypic expression, this disease is generally unknown. consequently, many cases are undiagnosed or diagnosis comes at a late stage, what points out the importance of an early diagnosis of the disease so the patient can have periodic check-ups to prevent malignant diseases. a family case is presented here, whose diagnosis was based upon oral clinical findings and which most distinct systemic alteration is the presence of hamartomatous polyps in the digestive tract in several family members.
Las determinaciones agrícolas de la competitividad industrial: El caso de Arcor
Baudino,Verónica;
Mundo agrario , 2009,
Abstract: arcor is one of the few argentine companies globally successful. in this paper, we report the progress of our research, showing that the accrual basis of the company is far from new. it sits on the competitiveness of agriculture pampas.
QUINE: UN GIRO INTERPRETACIONISTA Y PRAGMáTICO EN LA FILOSOFíA ANALíTICA DEL POSITIVISMO LóGICO
Vi?ao,Verónica;
Discusiones Filosóficas , 2007,
Abstract: quine criticizes two characteristic theses of logical positivism: the analytic-synthetic distinction and reductionism. on the other hand, he rejects the intensional notions that these theses suppose, such as analyticity, synonymy and proposition. as a change, he proposes a semantic theory about the natural language that intends to account for scientific language without those notions. this paper intends to analyze two aspects of this theory, one that relates quine with logical positivism and the other one that sharply separates him from it. the first aspect hast to do with the use of a logical-formal strategy as a philosophical tool. the second one takes us to the pragmatic and interpretationist turn -from the theoretical frame of logical positivism-, made evident by the determinant role that this theory gives to the action of the linguistic subject in the constitution of meaning.
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