Institution
Universidade Federal de Santa Maria
Education•Santa Maria, Brazil•
About: Universidade Federal de Santa Maria is a education organization based out in Santa Maria, Brazil. It is known for research contribution in the topics: Population & Context (language use). The organization has 21178 authors who have published 35632 publications receiving 371665 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the electronic and structural properties of silicon substitutional doping in carbon nanotubes are predicted using first-principles calculations based on the density-functional theory, and a large outward displacement of the Si atom and its nearest-neighbor carbon atoms is observed.
Abstract: Predictions of the electronic and structural properties of silicon substitutional doping in carbon nanotubes are presented using first-principles calculations based on the density-functional theory. A large outward displacement of the Si atom and its nearest-neighbor carbon atoms is observed. For the two tubes studied [metallic $(6,6)$ and semiconducting $(10,0)]$ the formation energies of the substitutional defects are obtained around 3.1 eV/atom. In the doped metallic nanotube case a resonant state appears about 0.7 eV above the Fermi level, whereas for the semiconductor tube, the silicon introduces an empty level at approximately 0.6 eV above the top of the valence band.
106 citations
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TL;DR: A retrospective study was carried out on 6,021 necropsies of cattle performed over a 36-year period in southern Brazil to gather information on type of gross and histopathological diagnosis, etiology, and clinical signs.
Abstract: A retrospective study was carried out on 6,021 necropsies of cattle performed over a 36-year period in southern Brazil. Of those, 552 (9.16%) presented neurological clinical signs and their necropsy protocols were reviewed to gather information on type of gross and histopathological diagnosis, etiology, and clinical signs. In 147 cases (26.63% of 552) there were no significant lesions in the central nervous system, in 79 (14.31% of 552) no samples of nervous tissue were submitted to the laboratory and in 21 (3.81% of 552) the tissues submitted were autolysed and not suitable for histological diagnosis. Lesions found in the remaining 305 cases were classified as inflammatory, degenerative, circulatory, congenital, and neoplastic. The inflammatory lesions accounted for the largest category (66.89% of 305 cases). This was further divided in lesions caused by viruses (57.38% of 305 cases) and by bacteria (9.51% of 305 cases). Diseases caused by viruses were rabies (49.51% of 305 cases), necrotizing meningo-encephalitis by bovine herpesvirus (4.59% of 305 cases), and malignant catarrhal fever (3.28% of 305 cases). The degenerative changes were represented by 74 cases (24.26% of 305 cases) and included status spongiosus due to liver failure induced by Senecio spp poisoning (10.49% of 305 cases) or to the direct effect of poisoning by Ateleia glazioviana (0.33% of 305 cases); cases of liver failure not associated with morphological changes in the brain (2.95% of 305 cases), myelomalacia due to cord compression (2.62% of 305 cases), primary neuronal degeneration associated with Solanum fastigiatum poisoning (2.29% of 305 cases); polioencephalomalacia (1.97% of 305 cases); tetanus (1.31% of 305 cases) and intestinal coccidiosis in calves, ketosis, and botulism with one case each (0.33% of 305 cases). Circulatory disturbances accounted for 19 cases (6.23% of 305 cases) and included cerebral babesiosis (5.57% of 305 cases) and hemorrhages due to trauma (0.66% of 305 cases). Congenital conditions represented 2.29% of the 305 cases and included cerebelar abiotrophy (two cases) and one case each of porencephaly, hypomyelinogenesis, demyelination, hydrocephalus, and cerebellar malformation. Only one neuroectodermal neoplasm (0.33% of 305 cases) was found in this series.
106 citations
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TL;DR: The results demonstrated that the microemulsion systems induced prolonged effects, providing inhibition of the inflammation for 9 days after a single dose administration.
106 citations
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TL;DR: The use of ultrasonic irradiation allowed higher efficiency for sulfur removal in comparison to experiments performed without its application, under the same reactional conditions.
106 citations
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University of Arizona1, University of Technology, Sydney2, McMaster University3, Colorado State University4, University of São Paulo5, Université Paris-Saclay6, California Institute of Technology7, University of Leeds8, University of Oxford9, University of Texas at Austin10, ExxonMobil11, Royal Netherlands Meteorological Institute12, Fukushima University13, Universidade Federal de Viçosa14, University of Illinois at Urbana–Champaign15, Harvard University16, University of Santiago de Compostela17, Swiss Federal Institute for Forest, Snow and Landscape Research18, Universidade Federal de Santa Maria19, University of Colorado Boulder20, Ghent University21, Empresa Brasileira de Pesquisa Agropecuária22, Wageningen University and Research Centre23, National Institute of Amazonian Research24, National Institute for Space Research25, University of Maryland, College Park26
TL;DR: In this article, the authors used a network of eddy covariance towers in Brazil coupled with ancillary measurements to address two main questions: first, how do mechanisms of water supply (indicated by root depth and groundwater) and vegetation water demand (defined by stomatal conductance and intrinsic water use efficiency) control evapotranspiration (E) along broad gradients of climate and vegetation from equatorial Amazonia to Cerrado, and how do these inferred mechanisms of supply and demand compare to those employed by a suite of ecosystem models?
106 citations
Authors
Showing all 21330 results
Name | H-index | Papers | Citations |
---|---|---|---|
João Rocha | 93 | 1521 | 49472 |
Jose Rodriguez | 93 | 803 | 58176 |
Christian C. Abnet | 86 | 413 | 29165 |
Thaisa Storchi-Bergmann | 70 | 318 | 22817 |
Ali Emadi | 69 | 660 | 24174 |
Luis S. Pereira | 68 | 317 | 35582 |
Diogo O. Souza | 68 | 534 | 17793 |
Adair R.S. Santos | 63 | 329 | 14529 |
Ahmad Awada | 61 | 547 | 16109 |
Farin Kamangar | 61 | 237 | 16554 |
Stefan Laufer | 59 | 481 | 11158 |
Cristina W. Nogueira | 59 | 503 | 16655 |
Ana Lúcia S. Rodrigues | 58 | 244 | 10187 |
Julia F. Ridpath | 57 | 229 | 9543 |
Ludger A. Wessjohann | 53 | 513 | 11405 |