Dynamical demixing of a binary mixture under sedimentation

We investigate the sedimentation dynamics of a binary mixture, the species of which differ by their Stokes coefficients but are identical otherwise. We analyze the sedimentation dynamics and the morphology of the final deposits using Brownian dynamics simulations for mixtures with a range of sedimentation velocities of both species. We found a threshold in the sedimentation velocities difference above which the species in the final deposit are segregated. The degree of segregation increases with the difference in the Stokes coefficients or the sedimentation velocities above the threshold. We propose a simple mean-field model that captures the main features of the simulated deposits

Recursos florestais não madeireiros: experiência e novos rumos em Rondônia.

Nesta publicação apresenta-se, de forma resumida, as principais pesquisas com Produtos Florestais Não Madeireiros (PFNM) realizadas pela Embrapa Rondônia e as novas tendências de aproveitamento da biodiversidade do Estado de Rondônia.bitstream/CPAF-RO-2010/14327/1/doc115-recursosflorestaisnaomadeireiros.pd

Noninvasive anatomical and functional assessment of coronary artery disease.

INTRODUCTION AND OBJECTIVE: In suspected coronary artery disease (CAD), invasive coronary angiography (ICA) is traditionally the diagnostic tool of choice. However, patients often have no significant disease. Moreover, assessment of fractional flow reserve (FFR) has been shown to have prognostic implications. Recently, coronary computed tomography angiography (CTA) and cardiac magnetic resonance (CMR) myocardial perfusion imaging (CMR-Perf) have gained increasing attention through their accurate anatomical and functional assessment, respectively. We studied the added value of integrating these tests (CT+CMRint) in the diagnosis of CAD, with FFR as the reference standard. METHODS: We included 101 patients consecutively referred for outpatient assessment of CAD who underwent CTA and CMR-Perf prior to ICA with FFR assessment. Lesions were considered positive by CT+CMRint only if positive in the two tests alone. The mean follow-up was 2.9±0.6 years. RESULTS: All patients completed the study protocol without adverse effects. Forty-four patients had CAD by FFR. CTA had excellent sensitivity and negative predictive value (100%) but, as expected, its specificity and positive predictive value were lower (61% and 67%, respectively). Diagnostic accuracy by FFR was 78% for CTA, 88% for CMR-Perf and 92% for CT+CMRint. Regarding diagnostic accuracy, CT+CMRint showed statistically significant superiority (AUC=0.917, 95% CI 0.845-0.963) compared with CTA (AUC=0.807, 95% CI 0.716-0.879, p=0.0057) or CMR-Perf (AUC=0.882, 95% CI 0.802-0.938, p=0.0398) alone. Regarding prediction of revascularization, the integrated protocol maintained its superior performance. CONCLUSIONS: CT+CMRint showed superior diagnostic accuracy and could thus lead to a considerable reduction in invasive procedures for CAD diagnosis, with less risk and greater patient comfort

Avaliação de dez linhagens e seus híbridos de milho superdoce em um dialelo completo.

Em 1996/97 foram avaliados em Pesqueira e Vitória de Santo Antão (PE), 45 híbridos simples superdoce obtidos de um cruzamento dialélico completo entre dez linhagens S4 e suas linhagens parentais. O delineamento utilizado foi látice 7 x 8 com duas repetições por local. Foram estimados os efeitos das capacidades geral (CGC) e específica (CEC) de combinação e os valores de heterose para peso de espiga com palha (PECP), peso de espiga sem palha (PESP) e rendimento de espiga (REND = PESP/PECP x 100). Os efeitos de CGC e CEC foram significativos (P<0,01) para todos os caracteres. As linhagens com maiores REND foram L5 = 76,5%; L7 = 71,2% e L4 = 69,6% (Pesqueira); L4 = 70,8%; L5 = 69,4% e L7 = 65,3% (Vitória de Santo Antão), e estas também apresentaram os maiores valores para os efeitos da CGC nos dois locais. Os cruzamentos mais produtivos (REND) foram L4 x L8 = 74,9% (Pesqueira) e L7 x L8 = 70,3% (Vitória de Santo Antão), que também apresentaram os maiores efeitos da CEC nos dois locais. Para o caráter REND, os valores de heterose em relação à média dos pais variaram de -20,19 a 24,01% (Pesqueira) e de -18,02 a 16,76% (Vitória de Santo Antão). Em relação ao pai mais produtivo os valores variaram de -23,52 a 22,99% (Pesqueira) e de -22,05 a 12,03% (Vitória de Santo Antão)

7-Chloro-4-(2-hydroxyethylamino)quinolin-1-ium chloride

The use of the EPSRC X-ray crystallographic service at the University of Southampton, England [Coles, S. J. & Gale, P. A. (2012). Chem. Sci. 3, 683-689.]), and the valuable assistance of the staff there is gratefully acknowledged. JLW acknowledges support from CAPES (Brazil). Structural studies are supported by the Ministry of Higher Education (Malaysia) and the University of Malaya through the High-Impact Research scheme (UM·C/HIR/MOHE/SC/3).Peer reviewedPublisher PD

BR - 5110 - Solimões: o milho de várzea do Amazonas.

BR - 5110 - Solimoes, variedade selecionada e adaptada para as condicoes de varzea no Amazonas. Sao descritas, alem das caracteristicas agronomicas da variedade, as recomendacoes tecnicas para o seu plantio em area de varzea no Amazonas.bitstream/CPAA-2009-09/2730/1/Com_Tec_9.pd