254 research outputs found
Application of Infrared Thermal Imaging in a Violinist with Temporomandibular Disorder
Temporomandibular disorders (TMD) consist of a group of pathologies that affect the masticatory muscles, temporomandibular joints (TMJ), and/or related structures. String instrumentalists, like many orchestra musicians, can spend hours with head postures that may influence the biomechanical behavior of the TMJ and the muscles of the craniocervicomandibular complex (CCMC). The adoption of abnormal postures acquired during performance by musicians can lead to muscular hyperactivity of the head and cervical muscles, with the possible appearance of TMD. Medical infrared thermography is a non-invasive procedure that can monitor the changes in the superficial tissue related to blood circulation and may serve as a complement to the clinical examination. The objective of this study was to use infrared thermography to evaluate, in one subject, the cutaneous thermal changes adjacent to the CCMC that occur before, during, and after playing a string instrument
Kinin B1 receptor gene ablation affects hypothalamic CART production
A role for the kinin B1 receptor in energy-homeostatic processes was implicated by previous works. Notably the studies where kinin B1 receptor knockout mice (B1-/-) are observed to have impaired adiposity, impaired leptin and insulin production, lower feed efficiency, protection from liver steatosis and diet induced obesity when fed a high fat diet (HFD). More particularly, in a model where the B1 receptor is expressed exclusively in the adipose tissue, it rescues the plasma insulin concentration and the weight gain seen in wild type mice. Taking into consideration that leptin participates in the formation of hypothalamic nuclei, which modulate energy expenditure, and feeding behavior, we hypothesized that these brain regions could also be altered in B1-/- mice. We observed for the first time a difference in the gene expression pattern of CART (cocaine-and-amphetamine related transcript) in the LHA (lateral hypothalamic area) resulting from the deletion of the kinin B1 receptor gene. The correlation between CART expression in the LHA and the thwarting of diet-induced obesity corroborates independent correlations between CART and obesity. Further it seems to indicate that the mechanism underlying the 'lean' phenotype of B1-/- mice is not solely stemming from changes in peripheral tissues but may also receive contributions from changes in the hypothalamic machinery involved in energy homeostasis processes
Sensoriamento remoto como suporte para estudos cartográficos sobre o território da América Portuguesa entre 1500 e 1822
This article discusses the use of satellite imaging as a means to support and map out the historical expansion of the borders of São Paulo State between the discovery of Brazil and its independence. This tool was employed in Cartography of a history, an exhibition staged at Museu Paulista/USP in 2005. The images were generated by Modis, Shuttle Radar Topographic Mission and Landsat-5, and georeferenced with the SPRING image processor as well as georectified mosaics made available by Nasa. They were then checked against a valuable set of cartographic data collected by the researchers working under the Jaime Cortesão History Chair at USP. The said set included information pertaining to the boundaries established by the Treaty of Tordesillas, with its distortions; the Map of the Courts; the captaincies; as well as the trails of bandeiras (exploring expeditions), monções (expeditions made up and down the rivers of the São Paulo and Minas Gerais captaincies), and tropeirismos (cattle driving routes). In other words, all the pioneering actions that helped to consolidate the territory of São Paulo State and to shape much of Brazil's spatial identity were traced in the images. The researchers also looked into the myth of Brazil as an island and into the purported connection between the Amazon and Paraná-Prata river basins based on their geomorphologic attributes as shown on the orbital images. The results were compiled into an 800-megabyte database and displayed at Museu Paulista. This paper describes the methodological procedures used to generate and analyze the images, and provides a summary of the research findings.Este artigo aborda a utilização de imagens de satélites como suporte para evidenciar a expansão histórico-cartográfica das fronteiras paulistas entre o descobrimento do Brasil e a sua independência, recurso esse utilizado na exposição Cartografia de uma história, realizada no Museu Paulista da USP em 2005. As imagens foram aquelas do Modis, do Shuttle Radar Topographic Mission e do Satélite Landsat-5. As cenas foram georreferenciadas valendo-se da ferramenta Spring e dos mosaicos georretificados disponibilizados pela Nasa. Sobre estes produtos foi lançado um valioso conjunto de informações cartográficas coletadas pelas pesquisadoras da Cátedra Jaime Cortesão da USP. O conjunto inclui o Tratado de Tordesilhas, com suas distorções, o Mapa das Cortes, as capitanias, as bandeiras, as monções, as trilhas, os tropeirismos, ou seja, todo o conjunto de ações pioneiras que permitiram consolidar o território paulista e grande parte da identidade espacial brasileira. Foram analisados também o mito da Ilha Brasil e os enlaces das bacias do rio Amazonas e do rio Paraná-Prata a partir dos atributos geomorfológicos dispostos nas imagens orbitais. Os resultados foram consolidados em um banco de dados de 800 megabites, sendo dispostos em exposição junto ao Museu Paulista. Este artigo descreve os procedimentos metodológicos de geração e de análise das imagens bem como sintetiza os resultados alcançados
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Measurement of the cross-section and charge asymmetry of bosons produced in proton-proton collisions at TeV with the ATLAS detector
This paper presents measurements of the and cross-sections and the associated charge asymmetry as a
function of the absolute pseudorapidity of the decay muon. The data were
collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with
the ATLAS experiment at the LHC and correspond to a total integrated luminosity
of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements
varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the
1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured
with an uncertainty between 0.002 and 0.003. The results are compared with
predictions based on next-to-next-to-leading-order calculations with various
parton distribution functions and have the sensitivity to discriminate between
them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables,
submitted to EPJC. All figures including auxiliary figures are available at
https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13
Comments on paper by M. Arai "Aptian/Albian (Early Cretaceous) paleogeography of the South Atlantic: a paleontological perspective"
Contribuição dos caracteres de qualidade da forragem ao teor de proteína bruta em Urochloa brizantha
Disponibilidade de fósforo em função das adições de calagem e de um bioativador do solo
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