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Artigo Acesso aberto Revisado por pares

Renato Contreras, Lucas Lodeiro, Nicolás Rozas-Castro, Rodrigo Ormazábal‐Toledo,

We herein report an ab initio molecular dynamics study on a natural DES composed of urea and betaine in a 3 : 2 ratio, as a test case for evaluating the water effect.

Tópico(s): Photochemistry and Electron Transfer Studies

2020 - Royal Society of Chemistry | Physical Chemistry Chemical Physics

Artigo Acesso aberto Revisado por pares

Nicolás Ambrosis, Pablo Martín Aispuro, Keila Belhart, Daniela Bottero, Renée Crisp, María V. Dansey, Magalí Gabrielli, Oscar Filevich, Valeria Genoud, Alejandra Paula Giordano, Min Chih Lin, Anı́bal R. Lodeiro, Felipe Marceca, Nicolás Pregi, Federico Remes Lenicov, Luciana Rocha-Viegas, Erika Rudi, Guillermo Solovey, Eugenia Zurita, Adalı́ Pecci, Roberto Etchenique, Daniela Hozbor,

Background: The high COVID-19 dissemination rate demands active surveillance to identify asymptomatic, presymptomatic, and oligosymptomatic (APO) SARS-CoV-2-infected individuals. This is of special importance in communities inhabiting closed or semi-closed institutions such as residential care homes, prisons, neuropsychiatric hospitals, etc., where risk people are in close contact. Thus, a pooling approach—where samples are mixed and tested as single pools—is an attractive strategy to rapidly detect ...

Tópico(s): COVID-19 diagnosis using AI

2021 - Frontiers Media | Frontiers in Medicine

Artigo Acesso aberto Revisado por pares

Orlando Donoso-González, Lucas Lodeiro, Álvaro Aliaga, M. Laguna, Soledad Bollo, Marcelo J. Kogan, Nicolás Yutronic, Rodrigo Sierpe,

Gold nanostars (AuNSs) exhibit modulated plasmon resonance and have a high SERS enhancement factor. However, their low colloidal stability limits their biomedical application as a nanomaterial. Cationic β-cyclodextrin-based polymer (CCD/P) has low cytotoxicity, can load and transport drugs more efficiently than the corresponding monomeric form, and has an appropriate cationic group to stabilize gold nanoparticles. In this work, we functionalized AuNSs with CCD/P to load phenylethylamine (PhEA) and ...

Tópico(s): Nanomaterials for catalytic reactions

2021 - Multidisciplinary Digital Publishing Institute | Pharmaceutics

Artigo Revisado por pares

Orlando Donoso-González, Rebecca Hengsbach, Thorsten Ohlerth, Michael Noyong, Rodrigo Sierpe, Nicolás Rozas-Castro, Lucas Lodeiro, Karen Bolaños, Francisco Melo, Nicolás Yutronic, Marcelo J. Kogan, Ulrich Simon,

Gold nanostars (AuNSs) have achieved special relevance for potential biomedical applications, e.g., in theranostics. In relation to this, some authors have explored controlling the conditions that trigger structural and morphological changes in these structures. In this work, we studied conditions that can trigger morphological changes of AuNSs or maintain their stability, such as ligand exchange to nonthiolated and thiolated species. First, the synthesis stabilizing ligand of AuNS, 4-(2-hydroxyethyl)- ...

Tópico(s): Advanced Nanomaterials in Catalysis

2023 - American Chemical Society | ACS Applied Nano Materials

Artigo Acesso aberto

Norberto Nigro, Nicolás Lodeiro Ocampo, Daniel G. Gnatiuk, Karina Gnatiuk, Marcos Britez, Marcos Dombrouski,

Confirmación de la presencia del hurón grande Galictis vittata (Mustelidae) en la República Argentina, tras treinta años sin registros RESUMEN Aunque el hurón grande (Galictis vittata) presenta una amplia distribución, a la fecha en Argentina apenas existen tres registros limitados a la provincia de Misiones, siendo el más reciente de una antigüedad mayor a treinta años.Confirmamos la presencia de la especie en el país a través de fotografías obtenidas con trampas cámara en el Parque Provincial Moconá ( ...

Tópico(s): Wildlife Ecology and Conservation

2021 - | Notas sobre Mamíferos Sudamericanos

Artigo Acesso aberto Revisado por pares

Nicolás Vozza, Patricia L. Abdian, Daniela M. Russo, Elías J. Mongiardini, Anı́bal R. Lodeiro, Søren Molin, Ángeles Zorreguieta,

In natural environments most bacteria live in multicellular structures called biofilms. These cell aggregates are enclosed in a self-produced polymeric extracellular matrix, which protects the cells, provides mechanical stability and mediates cellular cohesion and adhesion to surfaces. Although important advances were made in the identification of the genetic and extracellular factors required for biofilm formation, the mechanisms leading to biofilm matrix assembly and the roles of extracellular ...

Tópico(s): Microbial Community Ecology and Physiology

2016 - Frontiers Media | Frontiers in Microbiology

Artigo Revisado por pares

Cristina Núñez, R. Bastida, A. Macías, Laura Valencia, Nicolás I. Neuman, Alberto C. Rizzi, Carlos D. Brondino, Pablo J. González, José Luís Capelo, Carlos Lodeiro,

The Py2N4S2 octadentate coordinating ligand afforded dinuclear cobalt, copper and zinc complexes and the corresponding mixed metal compounds. The overall geometry and bonding modes have been deduced on the basis of elemental analysis data, MALDI-TOF-MS, IR, UV-vis and EPR spectroscopies, single-crystal X-Ray diffraction, conductivity and magnetic susceptibility measurements. In the copper and zinc complexes, a μ-hydroxo bridge links the two metal ions. In both cases, the coordination geometry is ...

Tópico(s): Metal-Catalyzed Oxygenation Mechanisms

2010 - Royal Society of Chemistry | Dalton Transactions

Artigo Acesso aberto Revisado por pares

Francisco Carriquiriborde, Pablo Martín Aispuro, Nicolás Ambrosis, Eugenia Zurita, Daniela Bottero, María Emilia Gaillard, Celina E. Castuma, Erika Rudi, Anı́bal R. Lodeiro, Daniela Hozbor,

Outer membrane vesicles (OMV) derived from Bordetella pertussis— the etiologic agent of the resurgent disease called pertussis—are safe and effective in preventing bacterial colonization in the lungs of immunized mice. Vaccine formulations containing those OMV are capable of inducing a mixed Th1/Th2/Th17 profile, but even more interestingly, they may induce a tissue-resident memory immune response. This immune response is recommended for the new generation of pertussis-vaccines that must be developed ...

Tópico(s): Infective Endocarditis Diagnosis and Management

2021 - Frontiers Media | Frontiers in Immunology

Artigo Revisado por pares

Nicolás Rozas-Castro, Lucas Lodeiro, Renato Contreras, Rodrigo Ormazábal‐Toledo,

The existence of domains at the nanometric scale has been observed in ionic liquids with long alkyl side chains. Experimental evidence and theoretical studies have suggested the existence of nanodomains with polar and non-polar characteristics. This evidence has been related to the capacity of ionic liquids to dissolve species within a broad range of chemical properties. Herein, we present a study of the structural features of the non-polar domain using classical molecular dynamics using a polarizable ...

Tópico(s): Surfactants and Colloidal Systems

2024 - Elsevier BV | Journal of Molecular Liquids

Artigo Acesso aberto

Mariela G. Gantchoff, Nicolás Lodeiro Ocampo, Norberto Nigro, Guillermo Martínez, Eduardo E. Musto, Luis M. Faifer, Mauro Hultgren,

La Reserva Natural de la Defensa Puerto Península, en el departamento Iguazú, provincia de Misiones, Argentina, alberga alrededor de 8,800 hectáreas de ambientes de Selva Paranaense o Bosque Atlántico del Alto Paraná en buen estado de conservación. Entre 2016 y 2022, mediante un monitoreo sostenido con cámaras trampa, documentamos al menos 15 individuos de yaguareté (tres hembras, ocho machos y cuatro de sexo no identificado), residentes y transeúntes. El 40% de los individuos fue registrado también ...

Tópico(s): Wildlife Ecology and Conservation

2023 - | Revista Mexicana de Mastozoología (Nueva Epoca)

Artigo Acesso aberto

Norberto Nigro, Nicolás Lodeiro Ocampo, Daniel G. Gnatiuk, Marcos Dombrouski, Marcos Britez, Karina Gnatiuk,

First records of the bush dog Speothos venaticus (Lund, 1842) in the Provincial Park Salto Encantado del Valle del Arroyo Cuñá Pirú, Misiones, Argentina.The bush dog Speothos venaticus was cited without evidence for the Provincial Park Salto Encantado del Valle del Arroyo Cuñá Pirú, Libertador Gral.San Martín department, Misiones.In this communication, the presence of the species in this protected area is confirmed by camera traps (photos and videos).

Tópico(s): Wildlife Ecology and Conservation

2021 - | Notas sobre Mamíferos Sudamericanos

Artigo Acesso aberto

Nicolás Lodeiro-Ocampo, Mariela G. Gantchoff, Norberto Nigro, Julián Y. Palaia, Daniel G. Gnatiuk,

Resumen El yaguareté está en peligro crítico de extinción en Argentina. Una de las principales causas de la disminución de sus poblaciones es su cacería como represalia de los ganaderos ante eventos de depredación. En el presente estudio reportamos los resultados de la implementación de un corral electrificado anti-depredación, durante cuatro años, en un potrero ganadero que colinda con un área selvática en Argentina. Describimos el sistema del alambrado eléctrico, y comparamos dos potreros adyacentes, ...

Tópico(s): Mosquito-borne diseases and control

2021 - | Revista Mexicana de Mastozoología (Nueva Epoca)