The National University of Río Cuarto is an Argentine national university, situated in the city of Río Cuarto, Córdoba. It currently has over 20,000 regular students, 1,500 teaching staff, 5 faculties and 42 available degrees. Wikipedia.
Agency: European Commission | Branch: FP7 | Program: CP-SICA | Phase: KBBE-2007-2-5-05 | Award Amount: 7.37M | Year: 2009
MYCORED aims at developing strategic solutions to reduce contamination by mycotoxins of major concern in economically important food and feed chains. The following toxins and commodities are especially considered in the project: aflatoxins, trichothecenes, zearalenone, fumonisins in wheat/maize food and feed chains; ochratoxin A in the grape-wine and wheat chains; and aflatoxins in the dried fruit chain. Novel methodologies, efficient handling procedures and information, dissemination and educational strategies are considered in a context of multidisciplinary integration of know-how and technology to reduce mycotoxins exposure worldwide. Five work-packages (WPs) will develop novel solution driven strategies to reduce both pre-and post-harvest contamination in feed and food chains. They involve: i) optimization of plant resistance and fungicide use; ii) biocontrol to reduce toxigenic fungi in cropping systems, iii) predictive modelling and optimise logistics; iv) novel post-harvest and storage practices and v) application of new food processing technologies. Two horizontal WPs will develop enabling methodologies for i) advanced diagnostics and quantitative detection of toxigenic fungi and ii) rapid and multi-toxin detection of mycotoxins and relevant biomarkers. The project will significantly build on the outcome of several European projects (through most coordinators/partners of FP5 and FP6) on mycotoxins by supporting, stimulating and facilitating education and cooperation with countries having major mycotoxin concerns related to (international) trade and human health. The direct involvement of ICPC countries (Argentina, Egypt, Russia, South Africa, Turkey) and international organizations (CIMMYT,IITA) together with strong alliances with major research institutions in the USA (3 USDA Centers/5 Universities), Australia, Malaysia will strengthen the project through sharing experiences and resources from several past/ongoing mycotoxin projects in a global context.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SFS-13-2015 | Award Amount: 6.43M | Year: 2016
MycoKey aims to generate innovative and integrated solutions that will support stakeholders in effective and sustainable mycotoxin management along food and feed chains. The project will contribute to reduce mycotoxin contamination mainly in Europe and China, where frequent and severe mycotoxin contaminations occur in crops, and where international trade of commodities and contaminated batches are increasing. MycoKey will address the major affected crops maize, wheat and barley, their associated toxigenic fungi and related mycotoxins (aflatoxins, deoxynivalenol, zearalenone, ochratoxin A, fumonisins). The project will integrate key information and practical solutions for mycotoxin management into a smart ICT tool (MycoKey App), providing answers to stakeholders, who require rapid, customized forecasting, descriptive information on contamination risk/levels, decision support and practical economically-sound suggestions for intervention. Tools and methodologies will be strategically targeted for cost-effective application in the field and during storage, processing and transportation. Alternative and safe ways to use contaminated batches will be also delivered. The focus of Mycokey will be: i) innovating communications of mycotoxin management by applying ICT, providing input for legislation, enhancing knowledge and networks; ii) selecting and improving a range of tools for mycotoxin monitoring; iii) assessing the use of reliable solutions, sustainable compounds/green technologies in prevention, intervention and remediation. The multi-disciplinary consortium, composed by scientific, industrial and association partners (32), includes 11 Chinese institutions and will conduct the 4 years programme in a framework of international networks.
Aguirre N.,National University of Rio Cuarto
Proceedings - 2017 IEEE/ACM 5th International FME Workshop on Formal Methods in Software Engineering, FormaliSE 2017 | Year: 2017
Formal approaches to software development have traditionally aimed at guaranteeing software correctness, through the use of notations, analysis mechanisms and other elements founded on solid mathematical grounds. Since the seminal works of Hoare, Floyd and others, formal methods have used logical notations to capture intended software behavior, and proposed techniques for reasoning about software correctness, originally mainly through deductive approaches. Formal methods for software development have been presented as a stronger correctness guarantee compared to informal, widely employed techniques such as testing. While advantages of formal methods make them appealing, the above-described original composition of formal methods implied two main difficulties for their effective use, namely, the need to dominate the logical notations used to specify intended software behavior, and mastering the associated deductive techniques necessary for analysis, i.e., for verifying software correctness. © 2017 IEEE.
Ibanez F.,National University of Rio Cuarto |
Wall L.,National University of Quilmes |
Fabra A.,National University of Rio Cuarto
Journal of Experimental Botany | Year: 2017
Agricultural practices contribute to climate change by releasing greenhouse gases such as nitrous oxide that are mainly derived from nitrogen fertilizers. Therefore, understanding biological nitrogen fxation in farming systems is benefcial to agriculture and environmental preservation. In this context, a better grasp of nitrogen-fxing systems and nitrogen-fxing bacteria-plant associations will contribute to the optimization of these biological processes. Legumes and actinorhizal plants can engage in a symbiotic interaction with nitrogen-fxing rhizobia or actinomycetes, resulting in the formation of specialized root nodules. The legume-rhizobia interaction is mediated by a complex molecular signal exchange, where recognition of different bacterial determinants activates the nodulation program in the plant. To invade plants roots, bacteria follow different routes, which are determined by the host plant. Entrance via root hairs is probably the best understood. Alternatively, entry via intercellular invasion has been observed in many legumes. Although there are common features shared by intercellular infection mechanisms, differences are observed in the site of root invasion and bacterial spread on the cortex reaching and infecting a susceptible cell to form a nodule. This review focuses on intercellular bacterial invasion of roots observed in the Fabaceae and considers, within an evolutionary context, the different variants, distribution and molecular determinants involved. Intercellular invasion of actinorhizal plants and Parasponia is also discussed. © 2016 The Author.
News Article | November 21, 2016
Two faculty members at Worcester Polytechnic Institute (WPI), José M. Argüello, the Walter and Miriam Rutman Professor of Biochemistry, and L. Ramdas Ram-Mohan, professor of physics, have been elected Fellows of the American Association for the Advancement of Science (AAAS), the world’s largest general scientific society. Election as a AAAS Fellow is an honor bestowed upon AAAS members by their peers in recognition of their scientifically or socially distinguished efforts to advance science or its applications. This year, 391 members have been awarded this honor. “We are delighted and very proud that Professors Argüello and Ram-Mohan are being honored by the AAAS,” said Bruce Bursten, WPI’s provost and retiring chair of the AAAS Section on Chemistry. “Election as a Fellow of the AAAS is a tangible recognition of our colleagues’ sustained academic excellence and their dedication to research and education.” Argüello was elected by the AAAS Section on Biological Sciences “for distinguished research discoveries elucidating the mechanisms underlying metal ion transport and the role of bacterial metal transporters in agriculture and infectious disease.” A member of the WPI faculty since 1996, he is a biochemist whose research focuses on the structure and function of proteins that transport heavy metals like copper, zinc, cobalt, and iron across cell membranes. These micronutrients perform fundamental functions in all living organisms, for example, maintaining structure, conferring catalytic activity to proteins, and participating in the transport of oxygen in the blood and the synthesis of sugars in plants. Metals also contribute to the virulence of pathogenic microorganisms and the ability of a cell to resist infection. Because of the importance of these basic biological functions, a better understanding of the mechanisms of heavy metal transport has implications for the treatment of a host of diseases, for human and animal nutrition, and for the bioremediation of heavy metal pollution. Argüello, who also holds an appointment as a member of the University of Massachusetts Center for Clinical and Translational Science, received a degree in biological chemistry from the National University of Cordoba and a PhD in biological sciences from the National University of Rio Cuarto in Argentina. He completed postdoctoral work in the Department of Physiology at the University of Pennsylvania and in the Department of Molecular Genetics at the University of Cincinnati. He has received multiple research grants from the National Science Foundation (NSF) and the National Institutes of Health (NIH), including an NIH Research Development Award for Minority Faculty in 1995 and a $1.3 million award in 2016 for a systematic study of copper in the bacteria Pseudomonas aeruginosa, a leading cause of hospital-associated infections. He has published nearly 60 scientific articles in peer-reviewed journals, including the Journal of Biological Chemistry, the most-cited biomedical research journal in the world; Argüello was appointed to the journal's editorial board in 2012. He is the co-editor of the 2012 book Topics in Membranes: Metal Transporters (Elsevier). Argüello served as a program director in the Division of Molecular and Cellular Biosciences at the NSF's Directorate for Biological Sciences in 2009, and in 2010 was appointed to a four-year term on the NIH's Macromolecular Structure and Function (A) study section to participate in the review and evaluation of research proposals aimed at understanding the nature of biological phenomena and applying that knowledge to enhance human health. In 2012, he received WPI’s Board of Trustees’ Award for Outstanding Research and Creative Scholarship. Ram-Mohan was elected by the AAAS Section on Physics “for major contributions to the development of computational algorithms and important advances in theory of electronic and optical properties of solid state and semiconductor materials.” Since joining the WPI faculty in 1978 he has developed an international reputation as a pioneer in solid state physics, a field that has helped propel extraordinary advances in the speed and power of computers, telecommunications systems, lasers, and other high-tech devices. In addition to exploring the quantum mechanical properties of condensed matter, Ram-Mohan has developed powerful computational tools that have made it possible to predict with great accuracy the properties of increasingly complex semiconductor and optoelectronic devices and to precisely control the design of these ubiquitous systems. The director of the university's Center for Computational NanoScience, Ram-Mohan's work on high-energy physics, condensed matter, and semiconductor physics has resulted in more than 200 peer-reviewed publications that have garnered more than 3,800 citations. He is also the founder of wavefunction engineering, a method for specifying certain quantum properties of semiconductor heterostructures—assemblies of two dissimilar semiconductor materials that display unique electrical or optoelectronic properties. This innovative method arises from the application of the finite element method, or FEM, a numerical analysis technique used widely in engineering, to quantum heterostructures. Ram-Mohan, recognized as one of the foremost authorities on FEM, described this new field in his landmark 2002 book, Finite Element and Boundary Element Applications to Quantum Mechanics. He is also the founder of Quantum Semiconductor Algorithms Inc., which he established to commercialize his software for designing quantum semiconductor heterostructures. In 2012 he was named a Coleman Fellow at WPI in recognition of his entrepreneurial experience and expertise. Ram-Mohan's research has earned him numerous awards and honors, including election as a fellow of the American Physical Society, the Optical Society of America, the American Vacuum Society, Australian Institute of Physics, and the United Kingdom Institute of Physics. He has received the Engineering Excellence Award of the Optical Society of America and the Department of the Air Force Certificate of Achievement, and served as the Clark Way Harrison Distinguished Visiting Professorship at Washington University in St. Louis in 2005. In 2008 he was awarded the Sarojini Damodaran Fellowship to deliver lectures at Tata Institute of Fundamental Research in Mumbai. WPI has recognized his research, teaching, and service with the Sigma Xi Senior Faculty Award for Research Excellence, the Board of Trustees' Award for Outstanding Creative Scholarship and Research, the Board of Trustees' Award for Outstanding Teaching, and the Chairman’s Exemplary Faculty Prize. Professors Argüello and Ram-Mohan will receive an official certificate and a gold and blue (representing science and engineering, respectively) rosette pin during the AAAS annual meeting on Feb. 18, 2017, in Boston. They join four current AAAS fellows at WPI: Provost Bruce Bursten, Dean of Arts and Sciences Karen Kashmanian Oates, and biology professors David Adams and Pamela Weathers. Founded in 1865 in Worcester, Mass., WPI is one of the nation’s first engineering and technology universities. Its 14 academic departments offer more than 50 undergraduate and graduate degree programs in science, engineering, technology, business, the social sciences, and the humanities and arts, leading to bachelor’s, master’s and doctoral degrees. WPI's talented faculty work with students on interdisciplinary research that seeks solutions to important and socially relevant problems in fields as diverse as the life sciences and bioengineering, energy, information security, materials processing, and robotics. Students also have the opportunity to make a difference to communities and organizations around the world through the university's innovative Global Projects Program. There are more than 45 WPI project centers throughout the Americas, Africa, Asia-Pacific, and Europe.
Correa N.M.,National University of Rio Cuarto |
Silber J.J.,National University of Rio Cuarto |
Riter R.E.,Agnes Scott College |
Levinger N.E.,Colorado State University
Chemical Reviews | Year: 2012
The self-assembly of amphiphiles in the absence of water is studied. The assembly of amphiphiles into microemulsions and reverse micelles in nonpolar solvents while sequestering a polar nonaqueous core is discussed. Fletcher et al. used dynamic light scattering (DLS) and viscosimetry to study thermodynamically stable AOT stabilized dispersions of GY in n-heptane. Sarkar and co-workers have probed GY/AOT/isooctane reverse micelles through steady-state and time-resolved fluorescence spectroscopy of two solvatochromic dyes, coumarin 480 and coumarin 490. Martino and Kaler reported the effect on microemulsion phase behavior and microstructure occurring when replacing water with PG, GY, and their mixtures in systems made with the nonionic surfactants pentaethylene glycol mono-n-decyl ether (C10E5). Mehta et al. have explored phase diagrams for several nonaqueous polar solvents in AOT/hexane.
Otamendi J.E.,National University of Rio Cuarto |
Ducea M.N.,University of Arizona |
Bergantz G.W.,University of Washington
Journal of Petrology | Year: 2012
The petrogenesis of calc-alkaline magmatism in the Famatinian arc is investigated in the central Sierra Valle Fértil, a major, lower to middle crustal section of the Early Ordovician active margin of West Gondwana. Large-scale field relationships show a gradual and continuous compositional variation of the plutonic sequence, ranging from olivine-bearing gabbronorites to hornblende- and biotite-bearing granodiorites. Distinctive lithostratigraphic units are, however, discernible as one compositional type of plutonic rock dominates over mappable areas. These results allow us to identify a continuous plutonic arc stratigraphy that progressively exposes shallower paleo-depths towards the east. At all the exposed levels, calc-alkaline plutonic rocks are volumetrically dominant, interrupted only by granulite-facies migmatites and leucogranites. The migmatites are interpreted to be refractory remnants of supracrustal sedimentary successions, whereas the peraluminous leucogranites have field relationships and chemical and isotopic compositions suggesting that they were produced via anatexis of metasedimentary packages. Mass-balance calculations predict that a parental gabbroic magma after progressive closed-system fractionation would crystallize about 80% of the original mass to yield a granodioritic daughter. Because the crystallizing mineral assemblage comprises hornblende and plagioclase, mass balance suggests a volume of residual amphibole-rich gabbroic rocks much larger than that observed, suggesting that differentiation is significantly driven by open-system processes. Indeed, the combination of field and petrographic observations with bulk-rock geochemistry and petrogenetic modeling demonstrates that most dioritic and tonalitic rocks are hybrids formed by either (1) bulk assimilation of metasedimentary materials into gabbroic magmas, or (2) multi-stage and complex interactions between gabbroic rocks and metasedimentary-derived leucogranitic melts. The source region of the granodioritic magmas is located at the transition zone between a tonalite-dominated intermediate unit and a granodiorite-dominated silicic unit. Typical granodiorites have a hornblende-bearing mineralogy, metaluminous chemical signature and isotopic compositions [ 87Sr/ 86Sr(T) = 0·7075-0·7100 and ε Nd(T) ~ -5·0] broadly overlapping those of the tonalites of the intermediate rock unit. These major compositional features of the granodiorites can be best explained if three end-member components contribute to their generation. As field observational data suggest, primitive gabbroic rocks, metaluminous intermediate magmas and anatectic leucogranitic melts mixed to produce the calc-alkaline granodiorites; however, the exact petrological process generating the granodioritic magmas is unclear because the mafic end-member may have been incorporated as mafic inclusions in the intermediate magmas or as syn-magmatic dikes, or both. The polygenetic nature of the intermediate to silicic plutonic rocks, along with the preponderance of parental gabbroic rocks at the inferred base of the plutonic column, suggests an upward growth of the intermediate to silicic crust that involved the complete reconstitution of the pre-existing crustal configuration. The main implication of this study is that intermediate and silicic plutonic rocks in the Valle Fértil section formed within a crustal column in which the mass transfer and heat input of mantle-derived magmas promoted fusion of fertile metasedimentary rocks and favored mixing of gabbroic or dioritic magmas with crustal granitic melts. Our results lend support to models asserting that the thermal and material budget of arc magmatism is primarily governed by the rate at which mafic magmas ascend from their mantle sources and intrude repeatedly into the crust. © The Author 2012. Published by Oxford University Press. All rights reserved.
Oggier G.G.,National University of Rio Cuarto |
Ordonez M.,University of British Columbia |
Galvez J.M.,University of British Columbia |
Luchino F.,Simon Fraser University
IEEE Transactions on Power Electronics | Year: 2014
This paper presents a boundary control scheme for dual active bridge (DAB) converters using the natural switching surface (NSS). The implementation of a curved switching surface for DAB converters is a new area of research undertaken in this paper. The proposed technique brings the benefit of unprecedented dynamic performance, already developed for nonisolated topologies (e.g., buck and boost), to this more complex isolated topology. The analysis provides insight into the natural trajectories of the DAB converters and creates an accurate framework in the normalized geometrical domain. As a result, the physical limits of the converter under study become evident. Those physical limits are exploited by employing the NSS to obtain fast transient response under start-up, sudden load transients, and reference change. In addition, fixed-frequency operation is one of the key features of the proposed control scheme, which allows optimizing the design of the high-frequency transformer. Experimental results are presented to validate the NSS for DAB converters and illustrate the benefits of the normalization technique. © 1986-2012 IEEE.
Picco M.,National University of Rio Cuarto |
Palacio G.,National University of Rio Cuarto
IEEE Geoscience and Remote Sensing Letters | Year: 2011
This letter deals with synthetic aperture radar (SAR) data classification in an unsupervised way. Many models have been proposed to fit SAR data (K, Weibull, Log-normal, etc.), but none of them are flexible enough to model all kinds of surfaces (particularly when there are urban areas present in the image). Our main contribution is the application of a statistical model script G sign0 in a classification process which is shown to be able to model areas with different degrees of heterogeneity. The quality of the classification obtained by mixing this model and a Markovian segmentation is high. We use an iterative conditional estimation method to estimate the parameters of the proposed model. © 2006 IEEE.
University of Alicante and National University of Rio Cuarto | Date: 2011-07-13
Manufacturing method of metal structures, active in surface enhanced Raman spectroscopy or related spectroscopies, implemented in a system comprising at least one lens, a plurality of mirrors and at least one beam splitter; and wherein said manufacturing method comprises at least the following steps: (i) a first step of splitting a laser beam into sub-beams by using a plurality of mirrors, these sub-beams having an impact on the sample of solid material to ablate or structure; (ii) a second step of depositing a metal layer on the SERS active surface structure of the previous step; (iii) a third step of placing the analyte distributed on the surface of the solid material coated with active metal; and (iv) a fourth step of obtaining the Raman spectrum by a monochromatic light incidence on the molecules immobilized on the surface structure.