216 research outputs found

    Recent Results on New Resonances at Belle

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    Abstract The current generation of B-factories have given a major contributions in completing the spectrum of heavy quarkonia. New questions are raised above the thresholds, where many new states, the so called XYZʼs were found. Insight into their nature can come from the investigation of EM and hadronic transitions between them. This review will cover Belleʼs recent progress in this sector, which exploits the record samples of data taken on the peaks of the ϒ(2, 4, 5 S ) resonances: the discovery of two multiplets of charged bottomonia ( Z b ʼs) and of four S=1 states (parabottomonia), the studies on η transitions and on D-wave resonances in both charmonium and bottomonium. Prospects for future studies are given

    The new scintillating fiber detector of E835 at Fermilab

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    Abstract The scintillating fiber tracker for the measurement of the polar coordinate θ for experiment E835 at Fermilab has been upgraded, by adding two extra layers (240 fibers each), at R ≈9 cm from the beam axis. Photons from the fibers are detected by Visible Light Photon Counters (VLPCs). The high granularity, flexibility and fast response of the scintillating fibers, combined with the high quantum efficiency of the VLPCs, allow high rate capability, high efficiency, good tracking and time resolution. Signals from the outer two layers are used to provide θ information to the first-level trigger

    Medula do tipo artisia na formação Iratí (Permiano), estado de São Paulo, Brasil

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    This paper records the first ocurrence of a pith cast resembling Artisia in Brazil, from near Porongaba, São Paulo. This pith cast may be related to the genus Solenoxylon Kräusel, first registred in southwest Africa, but also known in the Permian of Brazil

    Prevalence of thrombophilia factors in patients with May-Thurner syndrome and left common iliac vein thrombosis

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    BACKGROUND: The relationship between deep venous thrombosis and thrombophilia has been little studied in patients with left common iliac vein compression, clinically known as May-Thurner syndrome. OBJECTIVE: To evaluate the prevalence of thrombophilia markers in patients with May-Thurner syndrome and left common iliac vein thrombosis. METHODS: From March 1999 to December 2008, 20 patients with May-Thurner syndrome and left common iliac vein thrombosis were retrospectively investigated for the presence of thrombophilia markers. RESULTS: The association between May-Thurner syndrome and thrombophilia markers was found in 8 patients (40%). CONCLUSION: There is a high prevalence of thrombophilia markers in patients with May-Thurner syndrome and left common iliac vein thrombosis. The prevalence, however, is not different from that found in patients with deep venous thrombosis without May-Thurner syndrome.CONTEXTO: A relação entre trombose venosa profunda e trombofilia tem sido pouco estudada em indivíduos portadores de compressão da veia ilíaca comum esquerda, conhecida clinicamente como síndrome de May-Thurner. OBJETIVO: Avaliar a prevalência de marcadores de trombofilia nos pacientes portadores de síndrome de May-Thurner e trombose de veia ilíaca comum esquerda. MÉTODOS: Entre março de 1999 e dezembro de 2008, 20 pacientes com síndrome de May-Thurner e trombose de veia ilíaca comum esquerda foram avaliados retrospectivamente quanto à presença de marcadores de trombofilia. RESULTADOS: Foi detectada a associação entre síndrome de May-Thurner e marcadores de trombofilia em 8 pacientes (40%). CONCLUSÃO: A presença de marcadores de trombofilia em pacientes com trombose de veia ilíaca comum esquerda e síndrome de May-Thurner é frequente, porém não difere da prevalência encontrada em pacientes portadores de trombose venosa profunda sem a síndrome associada.Centro Integrado de Prevenção, Diagnóstico e Tratamento Vascular Departamento de AngiologiaUniversidade Federal de São Paulo (UNIFESP) Escola Paulista de MedicinaCentro Integrado de Prevenção, Diagnóstico e Tratamento VascularUniversidade Católica do Rio de JaneiroUNIFESP, EPMSciEL

    Climate and relief analysis on particulate matter in Madrid (Spain) and Sao Paulo (Brazil)

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    O presente estudo pretende examinar as concentrações de material particulado (MP10) e material particulado fino (MP2,5) entre os anos de 2007 e 2018 em São Paulo e Madrid para apontar se as características geográficas, clima e relevo, exercem influência na acumulação desses poluentes. Para isso foram usadas técnicas de geoprocessamento na análise do terreno, dados climatológicos, os boletins de qualidade do ar, as leis sobre poluição atmosférica de cada cidade e as recomendações internacionais sobre o tema. O relevo e o clima das duas cidades são distintos, mas ambos favorecem a concentração de poluição. Ainda assim, nenhuma delas infringiu as legislações locais durante o período, apesar de estarem além do recomendado pela OMS (Organização Mundial da Saúde).This study intends to verify the concentration of Particulate Matter (PM10) and Fine Particulate Matter (PM2,5) between 2007 and 2018 in Sao Paulo and Madrid municipalities to point if geographical characteristics like relief and climate have any influence on air pollution. We used geoprocessing techniques to analyze the landscape, climate data, air quality reports, legislation about the theme of each municipality and the international recommendations about air quality. The relief and climate of both cities are distinct, but able to concentrate air pollution. Despite none of them, during this period has gone beyond the limits of law, they are far from WHO (World Health Organization) recommendations

    Effect of initial levothyroxine dose on neurodevelopmental and growth outcomes in children with congenital hypothyroidism

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    We designed a multicentre open prospective randomized trial to evaluate the risk-benefit profile of two different initial treatment schemes with levothyroxine (L-T4), 10-12.5 μg/kg/day vs 12.6-15 μg/kg/day, on growth and neurodevelopmental outcomes in children with congenital hypothyroidism (CH) detected by neonatal screening to identify the best range dose to achieve optimal neurocognitive development
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