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Search Results: 1 - 10 of 4680 matches for " CECILIA; CHILLO "
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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.
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:
Influence of Heat Treatment on the Quality of Functional Gluten-Free Spaghetti  [PDF]
Marcella Mastromatteo, Stefania Chillo, Mariapia Iannetti, Valentina Civica, Grazia Sepielli, Matteo Alessandro Del Nobile
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.34062
Abstract: In this study the influence of initial water content and the extent of flour thermal pretreatment on both the dough rheological properties and the sensorial attributes of maize and chickpeas based gluten-free spaghetti were assessed. Results showed that samples with the highest initial water content had the highest values of elongation and shear viscosity, therefore dough with greater extensibility was obtained. Regarding the sensorial properties of non-cooked spaghetti, the overall quality of all samples had a very positive score with the exception of the samples with the highest initial water content and the lowest steam injection time that were scored just above the acceptability threshold because of their low resistance to break. The overall quality values of the cooked dry spaghetti were found to be around the acceptability threshold with the exception of the sample with the highest initial water content that showed a value higher than the threshold due to the highest values of bulkiness and adhesiveness.
Early Vessel Destabilization Mediated by Angiopoietin-2 and Subsequent Vessel Maturation via Angiopoietin-1 Induce Functional Neovasculature after Ischemia
Di Qin, Teresa Trenkwalder, Seungmin Lee, Omary Chillo, Elisabeth Deindl, Christian Kupatt, Rabea Hinkel
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0061831
Abstract: Background We assessed whether Angiopoietin-2 (Ang2), a Tie2 ligand and partial antagonist of Angiopoietin-1 (Ang1), is required for early vessel destabilization during postischemic angiogenesis, when combined with vascular growth factors. Methods In vitro, matrigel co-cultures assessed endothelial-cell tube formation and pericyte recruitment after stimulation of VEGF-A, Apelin (APLN), Ang1 with or without Ang2. In a murine hindlimb ischemia model, adeno-associated virus (rAAV, 3×1012 virusparticles) transduction of VEGF-A, APLN and Ang1 with or without Ang2 (continuous or early expression d0-3) was performed intramuscularly (d-14). Femoral artery ligation was performed at d0, followed by laser doppler perfusion meassurements (LDI) 7 and 14. At d7 (early timepoint) and d14 (late timepoint), histological analysis of capillary/muscle fiber ratio (CMF-R, PECAM-1) and pericyte/capillary ratio (PC-R, NG2) was performed. Results In vitro, VEGF-A, APLN and Ang1 induced ring formation, but only APLN and Ang1 recruited pericytes. Ang2 did not affect tube formation by APLN, but reduced pericyte recruitment after APLN or Ang1 overexpression. In vivo, rAAV.VEGF-A did not alter LDI-perfusion at d14, consistent with an impaired PC-R despite a rise in CMF-R. rAAV.APLN improved perfusion at d14, with or without continuous Ang2, increasing CMF-R and PC-R. rAAV.Ang1 improved perfusion at d14, when combined with rAAV.Ang2 (d0-3), accompanied by an increased CMF-R and PC-R. Conclusion The combination of early vessel destabilization (Ang2 d0-3) and continuous Ang1 overexpression improves hindlimb perfusion, pointing to the importance of early vessel destabilization and subsequent vessel maturation for enhanced therapeutic neovascularization.
On the Detection of Visual Features from Digital Curves Using a Metaheuristic Approach  [PDF]
Cecilia Di Ruberto
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.331241
Abstract: In computational shape analysis a crucial step consists in extracting meaningful features from digital curves. Dominant points are those points with curvature extreme on the curve that can suitably describe the curve both for visual perception and for recognition. Many approaches have been developed for detecting dominant points. In this paper we present a novel method that combines the dominant point detection and the ant colony optimization search. The method is inspired by the ant colony search (ACS) suggested by Yin in [1] but it results in a much more efficient and effective approximation algorithm. The excellent results have been compared both to works using an optimal search approach and to works based on exact approximation strategy.
Urban Simulation Models: Contributions as Analysis-Methodology in a Project of Urban Renewal*  [PDF]
María Cecilia Marengo
Current Urban Studies (CUS) , 2014, DOI: 10.4236/cus.2014.23028
Abstract: The recent urban transformations produced in cities indicate the need to propose new theoretical and methodological approaches in physical planning. Based on the idea of complexity, it is required to integrate, in the analysis, multiplicity of interrelated factors involved in urban development, moreover, to develop planning tools that can incorporate variables not initially considered (for example when the norms were sanctioned) and instruments that would provide assessment alternatives to planning decisions in real time. The simulation models are suggested as tools to detect the elements, relationships and the dynamics in a simplified form that allow experiencing on the results. That is to say, a theoretical position on to a computer model is translated to investigate (in an experimental way) possible solutions derived from manipulating the variables, before the phenomenon is materialized. In the case of urban planning, this condition is of particular relevance, given the importance to anticipate unwanted effects in the intervention context that may arise when urban projects are built. The paper evaluates the application of a simulation methodology, based on the dynamics of systems and the application of software that can anticipate the effects of certain decisions in an urban renewal project in the city of Córdoba, Argentina. It applies the General Systems Theory that is a contribution to the notion of complex thought and is trans-disciplinary. Based on the idea of complex and multidimensional city, the effects of a real estate development are analyzed and conclusions on the limits and possibilities of using this tool during the processes of urban management are provided.
Human Friendly Interface Design for Virtual Fitting Room Applications on Android Based Mobile Devices  [PDF]
Cecilia Garcia Martin, Erdal Oruklu
Journal of Signal and Information Processing (JSIP) , 2012, DOI: 10.4236/jsip.2012.34061
Abstract: This paper presents an image processing design flow for virtual fitting room (VFR) applications, targeting both personal computers and mobile devices. The proposed human friendly interface is implemented by a three-stage algorithm: Detection and sizing of the user's body, detection of reference points based on face detection and augmented reality markers, and superimposition of the clothing over the user's image. Compared to other existing VFR systems, key difference is the lack of any proprietary hardware components or peripherals. Proposed VFR is software based and designed to be universally compatible as long as the device has a camera. Furthermore, JAVA implementation on Android based mobile systems is computationally efficient and it can run in real-time on existing mobile devices.
Time for physicians to be aware of molecular genetic testing. Report from the 3rd Viareggio Health Festival
Cecilia Nardini
Multidisciplinary Respiratory Medicine , 2011, DOI: 10.1186/2049-6958-6-1-47
Abstract: However, so far, genetic knowledge has affected only marginally the everyday practice of medical professionals, who therefore run the risk of being "overcome" by their sudden impact in the near future. An opportunity to reflect upon genetic technologies and their impact on the medical profession was provided by the International Workshop held on September 22nd at the Ospedale della Versilia, within the 3rd edition of the Viareggio Health Festival. This year's Festival had the title "Genetic Testing and Hereditary Diseases: Between the Right not to Know and the Duty to Inform", and was aimed to investigate the ethical and legal aspects of medical genetic information, and the establishment of proper ways of handling it within the patient-clinician relationship.The first form of genetic knowledge is the deterministic one that exists in the case of Mendelian diseases like cystic fibrosis or chromosomal abnormalities such as the Down syndrome. These diseases cannot be cured, but the presence of the chromosomal or genetic abnormality can be established before birth by performing a test on the pregnant woman. In Italy, the law (DM 10/10/98, D. lgs. 22910/06/1999, "Decreto Bindi") has established that all pregnant women considered to be in a risk category - familial or age-related - have the right to free access to the test, leaving it to each region to set up specific screening programs. The tests in question are invasive and represent a risk for the pregnancy; therefore they are not suited for population-wide screening programs. In recent years, however, technical advances have made a non-invasive test possible, at least for the Down syndrome, by examining fetal proteins in maternal serum [1]. At present, non-invasive tests are not reliable on their own but they could be effective as a screening method (first step) for the pre-selection of candidates for the invasive tests, and for this reason they could be offered on a routine basis, as is already happening in some count
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