155 research outputs found
MEASURES TO SUPPORT BUSINESSES IN THE WAKE OF THE COVID-19 PANDEMIC AND THEIR INTERSECTION WITH BANKING SUPERVISORY RULES: THE PARADIGMATIC CASE OF ITALY
The negative repercussions of the Covid-19 pandemic on the economic fabric have led States to prepare various types of support measures. From this point of view, some measures adopted by the Italian legislator in the first half of 2020 express paradigmatically the challenges national legal systems had to face to reconcile different and contrasting needs. In this regard, the state guarantee measures for loans offered by the banking system appear emblematic, raising dilemmas of “competition between emergencies” in the quest to strike a difficult balance between solidarity and responsibility
Decellularized diaphragmatic muscle drives a constructive angiogenic response in vivo
Skeletal muscle tissue engineering (TE) aims to efficiently repair large congenital and acquired defects. Biological acellular scaffolds are considered a good tool for TE, as decellularization allows structural preservation of tissue extracellular matrix (ECM) and conservation of its unique cytokine reservoir and the ability to support angiogenesis, cell viability, and proliferation. This represents a major advantage compared to synthetic scaffolds, which can acquire these features only after modification and show limited biocompatibility. In this work, we describe the ability of a skeletal muscle acellular scaffold to promote vascularization both ex vivo and in vivo. Specifically, chicken chorioallantoic membrane assay and protein array confirmed the presence of pro-angiogenic molecules in the decellularized tissue such as HGF, VEGF, and SDF-1\u3b1. The acellular muscle was implanted in BL6/J mice both subcutaneously and ortotopically. In the first condition, the ECM-derived scaffold appeared vascularized 7 days post-implantation. When the decellularized diaphragm was ortotopically applied, newly formed blood vessels containing CD31+, \u3b1SMA+, and vWF+ cells were visible inside the scaffold. Systemic injection of Evans Blue proved function and perfusion of the new vessels, underlying a tissue-regenerative activation. On the contrary, the implantation of a synthetic matrix made of polytetrafluoroethylene used as control was only surrounded by vWF+ cells, with no cell migration inside the scaffold and clear foreign body reaction (giant cells were visible). The molecular profile and the analysis of macrophages confirmed the tendency of the synthetic scaffold to enhance inflammation instead of regeneration. In conclusion, we identified the angiogenic potential of a skeletal muscle-derived acellular scaffold and the pro-regenerative environment activated in vivo, showing clear evidence that the decellularized diaphragm is a suitable candidate for skeletal muscle tissue engineering and regeneration
Multi-stroke positive cloud-to-ground lightning sharing the same channel observed with a VHF broadband interferometer
In the same lightning flash, whose usual duration is less than a second, there can be multiple negative cloud-to-ground strokes with different terminations or following a preexisting channel to the ground. In contrast, it is not common to have multiple positive cloud-to-ground (+CG) strokes, and especially multi-stroke +CG flashes sharing the same channel to ground are very rarely observed. This polarity asymmetry is not well understood and many aspects are debated. In this letter, we present for the first time a very high frequency (VHF) radio band observation of a multi-stroke +CG flash along the same channel, observed simultaneously by a VHF broadband interferometer and a Lightning Mapping Array in north-central Colombia. These combined observations have unprecedented temporal and spatial resolution and allowed us to observe in detail the development of the flash and especially to understand the initiation mechanism of the subsequent positive stroke.Peer ReviewedPostprint (author's final draft
Reproductive Systems in Paspalum: Relevance for Germplasm Collection and Conservation, Breeding Techniques, and Adoption of Released Cultivars
The objective of this review is to analyze and describe the impact that mode of reproduction in Paspalum has on germplasm conservation, genetic improvement and commercialization of cultivars. Germplasm collection and conservation can now berethought considering the new available information related to how diversity is allocated in nature and how it can be transferred between the sexual and apomictic germplasm using novel breeding approaches. A quantification of species and accessions conserved around the world is analyzed in relation to the main germplasm banks. Because of the importance of apomixis in Paspalum species different breeding approaches have been used and tested. Knowledge related to the inheritance of apomixis, variable expressivity of the trait and techniques for early identification of apomicts has helped to improve the efficiency of the breeding methods. Novel breeding techniques are also being developed and are described regarding its advantages and limitations. Finally, the impact of reproductive mode on the popularity of the released cultivars is discussedFil: Acuña, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Martínez, Eric Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Zilli, Alex Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Brugnoli, Elsa Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Espinoza, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Marcón, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Urbani, Mario Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Quarin, Camilo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentin
Aportes a Smart Energy utilizando XBee e IEEE 802.15.4
El concepto de Smart-Grid se ha convertido de gran ayuda con el advenimiento y actualidad de las fuentes no convencionales de energía. El monitoreo y control en estas redes es esencial para asegurar el funcionamiento efectivo y eficiente. En este trabajo estamos proponiendo un sistema de tele monitoreo de tensión, intensidad de corriente y potencia de un sistema fotovoltaico, como piedra fundamental de un sistema de tele medición de consumos domiciliarios, los que consideramos los hogares del futuro. Se propone una arquitectura para el monitoreo de energía en aplicaciones de redes inteligentes utilizando la tecnología de redes de sensores inalámbricos, diseñando un prototipo de medición y transmisión bajo protocolo IEEE 802.15.4 y microcontroladores (MC) de Microchip®.
Como resultado del presente trabajo se han realizado efectivas mediciones desde módulos fotovoltaicos presentando los valores transmitidos en pantallas LCD, almacenando los datos para su posterior procesamiento y diagnostico; analizando el comportamiento de los módulos fotovoltaicos a lo largo de su vida útil.Eje: Arquitectura , Redes y Sistemas OperativosRed de Universidades con Carreras en Informática (RedUNCI
Aportes a Smart Energy utilizando XBee e IEEE 802.15.4
El concepto de Smart-Grid se ha convertido de gran ayuda con el advenimiento y actualidad de las fuentes no convencionales de energía. El monitoreo y control en estas redes es esencial para asegurar el funcionamiento efectivo y eficiente. En este trabajo estamos proponiendo un sistema de tele monitoreo de tensión, intensidad de corriente y potencia de un sistema fotovoltaico, como piedra fundamental de un sistema de tele medición de consumos domiciliarios, los que consideramos los hogares del futuro. Se propone una arquitectura para el monitoreo de energía en aplicaciones de redes inteligentes utilizando la tecnología de redes de sensores inalámbricos, diseñando un prototipo de medición y transmisión bajo protocolo IEEE 802.15.4 y microcontroladores (MC) de Microchip®.
Como resultado del presente trabajo se han realizado efectivas mediciones desde módulos fotovoltaicos presentando los valores transmitidos en pantallas LCD, almacenando los datos para su posterior procesamiento y diagnostico; analizando el comportamiento de los módulos fotovoltaicos a lo largo de su vida útil.Eje: Arquitectura , Redes y Sistemas OperativosRed de Universidades con Carreras en Informática (RedUNCI
Use of donor bone marrow mesenchymal stem cells for treatment of skin allograft rejection in a preclinical rat model
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