Cordoba, Argentina

National University of Cordoba
Cordoba, Argentina

The National University of Córdoba , founded in 1613, is the oldest university in Argentina, the fourth oldest in South America and the sixth oldest in Latin America. It is located in Córdoba, the capital of Córdoba Province. Since the early 20th century it has been the second largest university in the country in terms of the number of students, faculty, and academic programs. As the location of the first university founded in the land that is now Argentina, Córdoba has earned the nickname La Docta . Wikipedia.

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University of Granada, Servicio Andaluz De Salud and National University of Cordoba | Date: 2017-09-27

The invention is comprised in the field of biomedicine, and more specifically, the field of tissue engineering. The invention specifically relates to the use of multiple magnetic domain particles that have a mean diameter greater than 25 nm, to compositions and biomaterials comprising same, and to an in vitro method for producing an artificial tissue with the magnetic particles, to the artificial tissue that can be produced by said method, and to the use of said artificial tissue for partially or completely increasing, restoring or replacing the functional activity of a damaged organ or tissue.

Dotti G.,National University of Cordoba
Classical and Quantum Gravity | Year: 2016

The non-modal linear stability of the Schwarzschild black hole established in Dotti (2014 Phys. Rev. Lett. 112 191101) is generalized to the case of a non-negative cosmological constant Λ. Two gauge invariant combinations G± of perturbed scalars made out of the Weyl tensor and its first covariant derivative are found such that the map with domain the set of equivalent classes under gauge transformations of solutions of the linearized Einstein's equation, is invertible. The way to reconstruct a representative of in terms of is given. It is proved that, for an arbitrary perturbation consistent with the background asymptote, and are bounded in the the outer static region. At large times, the perturbation decays leaving a linearized Kerr black hole around the Schwarzschild or Schwarschild de Sitter background solution. For negative cosmological constant it is shown that there are choices of boundary conditions at the time-like boundary under which the Schwarzschild anti de Sitter black hole is unstable. The root of Chandrasekhar's duality relating odd and even modes is exhibited, and some technicalities related to this duality and omitted in the original proof of the case are explained in detail. © 2016 IOP Publishing Ltd.

Camarini R.,University of Sao Paulo | Pautassi R.M.,National University of Cordoba
Brain Research Bulletin | Year: 2016

Ethanol-induced behavioral sensitization (EBS) was first described in 1980, approximately 10 years after the phenomenon was described for psychostimulants. Ethanol acts on γ-aminobutyric acid (GABA) and glutamate receptors as an allosteric agonist and antagonist, respectively, but it also affects many other molecular targets. The multiplicity of factors involved in the behavioral and neurochemical effects of ethanol and the ensuing complexity may explain much of the apparent disparate results, found across different labs, regarding ethanol-induced behavioral sensitization. Although the mesocorticolimbic dopamine system plays an important role in EBS, we provide evidence of the involvement of other neurotransmitter systems, mainly the glutamatergic, GABAergic, and opioidergic systems. This review also analyses the neural underpinnings (e.g., induction of cellular transcription factors such as cyclic adenosine monophosphate response element binding protein and growth factors, such as the brain-derived neurotrophic factor) and other factors that influence the phenomenon, including age, sex, dose, and protocols of drug administration. One of the reasons that make EBS an attractive phenomenon is the assumption, firmly based on empirical evidence, that EBS and addiction-related processes have common molecular and neural basis. Therefore, EBS has been used as a model of addiction processes. We discuss the association between different measures of ethanol-induced reward and EBS. Parallels between the pharmacological basis of EBS and acute motor effects of ethanol are also discussed. © 2016 Elsevier Inc.

Agency: European Commission | Branch: FP7 | Program: CP-FP-SICA | Phase: ENV.2011.3.1.1-1 | Award Amount: 4.58M | Year: 2011

In order to be able to maximize the benefits from reuse and recycling technologies projects a larger systemic analysis of the environment is needed, an enlargement of the traditional narrow planning and management approaches, and a growing sensitivity to decision-making associated with multi-objective, multi-purpose actions and multi uses parameters. However, the problem is not centered on the lack of treatment techniques and technologies, but rather on how such schemes may become more efficient and implementable. COROADO will both develop new and adapt existing concepts and operational frameworks and produce a web-based toolbox for reuse and recycling technologies in the context of integrated water resources management, taking into account long-lasting changes, and at the same time addressing environmental and ecosystem integrity. Climate change and water scarcity in relation with the pertinent technologies will also be addressed. Thus, COROADO would focus on: a) Developing tools for analyzing reuse and recycling technologies and trade-offs b) Addressing non-linearity and resilience c) Promoting and organizing active participation of stakeholders and capacity building efforts. The web based Communication, Capacity Building and Research Tool will present a richer menu of options from assessment and planning to implementation, monitoring and evaluation The system will be designed so as to present critical information in an interesting and efficient manner, offering an engaging learning experience. The project will include deliberate efforts to ensure knowledge and capacity exchanges between the project sites, and among Latin American, European and other parts of the world facing similar conditions, by introducing exchanges based on research in the four study sites and generated outcomes with a strong emphasis in dissemination. The effort may develop an understanding of needed transitions of governance and policy systems in order to mainstream such water reuse and recycling technologies implementation, providing a continuous and appropriate set of guidelines, and manuals so that policy relevant standards may be applied by end users and policy makers and after the completion of COROADO, without any further support.

University of the Frontier and National University of Cordoba | Date: 2014-03-26

A piece of scientific/technological equipment is presented for the generation of a convergent photon beam for radiotherapy or other applications. This equipment consists of adequately modifying the trajectory of an electron beam from a linear accelerator (LINAC) by applying magnetic and/or electric fields. These electrons perpendicularly impact the surface of a curved material that has a particular curvature ratio (anode), thus generating X-rays. The interactions of the electrons with the atoms of the anodes material generate X-rays with a non-isotropic angular-spatial distribution, with a greater concentration in the focal direction, which is defined by the geometry of the anode. A curved collimator with an adequate curvature ratio is attached to the back of the anode. The collimator is made up of an array of a great number of small holes that point toward the focal point. This device transmits X-rays solely in the focal direction. The Summary Figure presents a typical configuration of the invention that has been presented.

Rojas R.,National University of Cordoba
Applied Clay Science | Year: 2014

Layered double hydroxides are increasingly studied as heavy metal scavengers due to their acid/base buffering capacity that leads to hydroxide precipitation. Their intercalation with ligands such as edta also provides active sites for heavy metal chelation to these solids. In this work, both mechanisms are studied in Ca-Al layered double hydroxides (LDHs) with a Friedel's salt layered structure and intercalated with either nitrate (Ca-Al-NO3) or [Ca(edta)]2- (Ca-Al-[Ca(edta)]). With this aim, the acid-base buffering capacity of these solids was determined and their removal behavior studied as a function of equilibrium concentration and pH. The solids presented high instability, Ca2+ ions being selectively leached at pH values as high as 8. As a consequence, high affinity and large removal capacity of Cu2+, Cd2+ and Pb2+ were obtained for Ca-Al-NO3 by a hydroxide precipitation mechanism. The removal capacity of Ca-Al-[Ca(edta)] was quite similar, however, a portion of heavy metal ions was solubilized due to [Ca(edta)]2- release. The heavy metal hydroxides obtained by the Ca-Al LDH removal action produced immobilization at pH values lower than those produced by simple alkalinization. © 2013 Elsevier B.V.

Dotti G.,National University of Cordoba
Physical Review Letters | Year: 2014

A proof is given that the space L of solutions of the linearized vacuum Einstein equation around a Schwarzschild black hole is parametrized by two scalar fields, which are gauge invariant combinations of perturbed algebraic and differential invariants of the Weyl tensor and encode the information on the odd (-) and even (+) sectors L±. These fields measure the distortion of the geometry caused by a generic perturbation and are shown to be pointwise bounded on the outer region r≥2M. © 2014 American Physical Society.

Dain S.,National University of Cordoba
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2015

Bekenstein bounds for the entropy of a body imply a universal inequality between size, energy, angular momentum, and charge. We prove this inequality in electromagnetism. We also prove it, for the particular case of zero angular momentum, in general relativity. We further discuss the relation of these inequalities with inequalities between size, angular momentum, and charge recently studied in the literature. © 2015 American Physical Society.

Conti G.,National University of Cordoba | Diaz S.,National University of Cordoba
Journal of Ecology | Year: 2013

Carbon storage in vegetation and soil underpins climate regulation through carbon sequestration. Because plant species differ in their ability to capture, store and release carbon, the collective functional characteristics of plant communities (functional diversity) should be a major driver of carbon accumulation in terrestrial ecosystems. Three major components of plant functional diversity could be put forward as drivers of carbon storage in ecosystems: the most abundant functional trait values, the variety of functional trait values and the abundance of particular species that could have additional effects not incorporated in the first two components. We tested for associations between these components and carbon storage across 16 sites in the Chaco forest of Argentina under the same climate and on highly similar parental material. The sites differed in their plant functional diversity caused by different long-term land-use regimes. We measured six plant functional traits in 27 species and weighted them by the species abundance at each site to calculate the community-weighted mean (CWM) and the functional divergence (FDvar) of each single trait and of multiple traits (FDiv). We also measured plant and soil carbon storage. Using a stepwise multiple regression analysis, we assessed which of the functional diversity components best explained carbon storage. Both CWM and FDvar of plant height and wood-specific gravity, but no leaf traits, were retained as predictors of carbon storage in multiple models. Relationships of FDvar of stem traits and FDiv with carbon storage were all negative. The abundance of five species improved the predictive power of some of the carbon storage models. Synthesis. All three major components of plant functional diversity contributed to explain carbon storage. What matters the most to carbon storage in these ecosystems is the relative abundance of plants with tall, and to a lesser extent dense, stems with a narrow range of variation around these values. No consistent link was found between carbon storage and the leaf traits usually associated with plant resource use strategy. The negative association of trait divergence with carbon storage provided no evidence in support to niche complementarity promoting carbon storage in these forest ecosystems. © 2013 The Authors. Journal of Ecology © 2013 British Ecological Society.

Caceres D.M.,National University of Cordoba
Journal of Agrarian Change | Year: 2015

Drawing upon the concept of 'accumulation by dispossession', this paper analyses the expansion of agrarian capital in Argentina. A case study illustrates the social and environmental impacts of the expansion of agribusiness in central Argentina and the social struggle - both rural and urban - that has arisen to resist this process. Although government policies after the 2001 crisis differ in many ways from those of the 1990s, current agrarian policies are not significantly distinct from those followed during the pre-crisis neoliberal period. Rather than 'post-neoliberal', the new model could thus be better described as 'neo-extractivist'. With the connivance of the state, agribusiness is producing the largest-ever transformation of natural capital into economic capital in the history of the region. Moreover, the latest policy developments suggest that Argentina is on the threshold of a new and deeper stage of agrarian capital expansion and wealth concentration, this time operating at a much larger scale. © 2015 John Wiley & Sons Ltd.

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