61 research outputs found

    Desempenho produtivo de genĂłtipos de girassol cultivados nas safrinhas 2011 e 2012.

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    O presente trabalho teve como objetivo avaliar o desempenho produtivo, em grĂŁos e em Ăłleo, de genĂłtipos de girassol cultivados nas safrinhas 2011 e 2012

    Informes da avaliação de genótipos de girassol 2011/2012 e 2012.

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    Características gerais da Rede de Ensaios de Avaliação de Genótipos de Girassol. Resultados dos Ensaios Finais de Primeiro e Segundo Ano ? safra 2011/2012: Encruzilhada do Sul (RS), Vacaria (RS), Hulha Negra (RS), Caxias do Sul (RS), Londrina (PR), Curitiba (RS). Locais não considerados na análise conjunta. Análise conjunta. Resultados dos Ensaios Finais de Primeiro e Segundo Ano ? safra 2011/2012: Passo Fundo (RS), Rio Pardo (RS), São Gabriel (RS), Veranópolis (RS), Londrina (PR), Campo Mourão (PR), Umuarama (PR). Locais não considerados na análise conjunta . Análise conjunta. Resultados do Ensaios Finais de Segundo Ano ? safrinha 2012: Projeto Jaíba (MG), Planaltina (DF), Rio Verde (GO), Vilhena (RO) Ensaio A, Vilhena (RO) Ensaio B, Teresina (PI), Uruçuí (PI), São João do Piauí (PI), Mata Roma (MA), Colinas (MA). Locais não considerados na análise conjunta. Análise conjunta. Resultados dos Ensaios Finais de Primeiro Ano ? safrinha 2012: Nova Porteirinha (MG), Uberlândia (MG), Planaltina (DF), Palmas (TO), Vilhena (RO) Ensaio A, Vilhena (RO) Ensaio B, Vilhena (RO) Ensaio C. Locais não considerados na análise conjunta. Análise conjunta. Lista dos genótipos de girassol avaliados e registrados no Ministério da Agricultura, Pecuária e Abastecimento ? MAPA.bitstream/item/97782/1/Ana-Doc-340-baixa.pd

    Biodiversity, evolution and adaptation of fungi in extreme environments

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    Fungi play irreplaceable roles for ecosystem functioning. They may adopt different lifestyles, for example saprotrophs, symbionts or parasites: some species are cosmopolitan with a wide distribution and others, thanks to their ecological plasticity, may adapt to harsh environments precluded to most of life forms. In stressing conditions, their role is even more crucial for the recycling of organic matter or favoring nutrients uptake. When the conditions become really extreme and competition is low, fungi focus on extremotolerance and evolve peculiar competences to exploit natural or xenobiotic resources in the particular constrains imposed by the environment. This paper focuses on three different cases of fungal life in the extremes: hydrocarbon-polluted sites, extremely acidic substrates, and littoral dunes, aiming to give few but significant examples of the role of these fascinating organisms in peculiar habitats and the valuable biotechnological potentialities of the abilities they have evolved in response to such constrains

    Connective tissue anomalies in patients with spontaneous cervical artery dissection.

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    OBJECTIVE: To investigate the prevalence of connective tissue abnormalities in patients with spontaneous cervical artery dissections (sCeAD). METHODS: We systematically assessed clinically detectable signs of connective tissue aberration in a series of consecutive patients with sCeAD and of age- and sex-matched patients with ischemic stroke unrelated to CeAD (non-CeAD IS) by a standard examination protocol including 68 items, and performed extensive molecular investigation for hereditary connective tissue disorders in all patients with sCeAD. RESULTS: The study group included 84 patients with sCeAD (mean age, 44.5 ± 7.8 years; 66.7% men) and 84 patients with non-CeAD IS. None of the patients with sCeAD met clinical or molecular diagnostic criteria for established hereditary connective tissue disorder. Connective tissue abnormalities were detected more frequently in the group of patients with sCeAD than in the group of those with non-CeAD IS (mean number of pathologic findings, 4.5 ± 3.5 vs 1.9 ± 2.3; p < 0.001). Eighty-one patients (96.4%) in the sCeAD group had at least one detectable sign compared with 55 patients (66.7%) in the group with non-CeAD IS (p < 0.001). Skeletal, ocular, and skin abnormalities, as well as craniofacial dysmorphisms, were the clinical signs more strongly associated with sCeAD. Signs suggesting connective tissue abnormality were also more frequently represented in patients with sCeAD than in patients with traumatic CeAD (28.6%, p < 0.001; mean number of pathologic findings, 1.7 ± 3.7, p = 0.045). CONCLUSIONS: Connective tissue abnormalities are frequent in patients with sCeAD. This reinforces the hypothesis that systemic aberrations of the connective tissue might be implicated in the pathogenesis of the disease

    A focus on selected perspectives of the NUMEN project

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    The use of double charge exchange reactions is discussed in view of their application to extract information that may be helpful to determinate the nuclear matrix elements entering in the expression of neutrinoless double beta decay half-life. The strategy adopted in the experimental campaigns performed at INFN - Laboratori Nazionali del Sud and in the analysis methods within the NUMEN project is briefly described, emphasizing the advantages of the multi-channel approach to nuclear reaction data analysis. An overview on the research and development activities on the MAGNEX magnetic spectrometer is also given, with a focus on the chosen technological solutions for the focal plane detector which will guarantee the performances at high-rate conditions

    Trasporto merci pericolose su strada: metodologia di analisi e relative criticitĂ  nell'ambito di uno studio condotto in regione Lombardia

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    Negli ultimi anni, anche a fronte di numerosi incidenti in cui sono state coinvolte sostanze pericolose, è in atto una crescente attenzione da parte degli enti preposti verso tale problematica. Tra le diverse forme di rischio tecnologico, il trasporto di merci pericolose costituisce un potenziale rischio d’incidente rilevante per il territorio e assume particolare rilevanza la possibilità di valutare sia la probabilità che la grandezza dell’evento in relazione all’ambiente interessato anche al fine di programmare azioni di prevenzione e strategie di intervento. Nell’ambito dell’ Accordo per la condivisione delle conoscenze e la sperimentazione di metodologie nel settore della prevenzione e del controllo dei rischi di incidenti rilevanti stipulato il 11 Novembre 2005 tra Ministero dell’Ambiente e della Tutela del Territorio e del Mare e Regione Lombardia” è stata svolta un’attività di ricerca in merito al trasporto di sostanze pericolose in Lombardia, denominata “Piano Logistica Trasporti Pericolose a livello Regionale” (di seguito Piano Logistica). Si tratta del primo accurato studio a livello regionale sui rischi nella movimentazione di merci pericolose con un duplice obiettivo: la definizione di una metodologia prototipale in grado di fornire al Ministero materiale adeguato ad una sua replicabilità in altri ambiti regionali italiani; la disponibilità di modelli di calcolo, che da un lato consentono l’ottenimento della fotografia dei rischi allo stato attuale, e dall’altro si prestano ad un utilizzo previsionale per varie ipotesi di intervento relativi ai vettori impiegati, alla possibilità di apertura al traffico di nuove arterie stradali e all’intermodalità. Tali modelli sono applicati alla realtà della regione Lombardia. Lo scopo del presente articolo è quello di descrivere, seppure sinteticamente, l’approccio metodologico utilizzato e le criticità di analisi emerse nello svolgimento delle attività del Piano Logistica. Nonostante lo studio abbia incluso le diverse modalità di trasporto, l’attenzione è qui maggiormente rivolta al trasporto stradale

    Influence of the processing conditions and corona poling on the morphology of β-PVDF

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    The α → β phase transformation of PVDF through the stretching process at different temperatures was investigated. The optimum stretching conditions were studied and characterised by infrared spectroscopy and differential scanning calorimetry. The maximum β-phase content was achieved at 80°C and a stretch ratio of 5. These samples were poled at several electric fields by the corona charge method. The effect of the electric field on the phase transformation was studied by infrared spectroscopy
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