Utilização do sistema integrado de diagnose e recomendação (DRIS) na determinação do estado nutricional da pimenta-do-reino em Paragominas, PA.

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Avaliação do uso da prostaglandina na sincronização do estro associado ou não ao uso do hCG em cabras.

Resumo: O objetivo deste estudo foi avaliar a eficácia da sincronização do estro sobre os parâmetros ovarianos e comportamentais de cabras da raça Toggenburg. A administração da hCG no inicio do estro é capaz de antecipar a ovulação e promover um aumento no numero de ovulações. Estes resultados devem ser observados para estabelecimento momento ideal para a IA. [Evaluation of the use prostaglandin in synchronization the estrus associated or not the hCG in goats]

Rheophysics of dense granular materials : Discrete simulation of plane shear flows

We study the steady plane shear flow of a dense assembly of frictional, inelastic disks using discrete simulation and prescribing the pressure and the shear rate. We show that, in the limit of rigid grains, the shear state is determined by a single dimensionless number, called inertial number I, which describes the ratio of inertial to pressure forces. Small values of I correspond to the quasi-static regime of soil mechanics, while large values of I correspond to the collisional regime of the kinetic theory. Those shear states are homogeneous, and become intermittent in the quasi-static regime. When I increases in the intermediate regime, we measure an approximately linear decrease of the solid fraction from the maximum packing value, and an approximately linear increase of the effective friction coefficient from the static internal friction value. From those dilatancy and friction laws, we deduce the constitutive law for dense granular flows, with a plastic Coulomb term and a viscous Bagnold term. We also show that the relative velocity fluctuations follow a scaling law as a function of I. The mechanical characteristics of the grains (restitution, friction and elasticity) have a very small influence in this intermediate regime. Then, we explain how the friction law is related to the angular distribution of contact forces, and why the local frictional forces have a small contribution to the macroscopic friction. At the end, as an example of heterogeneous stress distribution, we describe the shear localization when gravity is added.Comment: 24 pages, 19 figure

Intracardiac Mass Due to Fibrosing Mediastinitis: The First Reported Case

We report a case of a woman, aged 53 years, presenting with a right atrial mass due to idiopathic fibrosing mediastinitis with periaortic involvement. This challenging diagnosis was confirmed by different imaging modalities and histopathologic analysis. The diagnosis of cardiac tumours is often difficult. To our knowledge, this is the first reported case of an intracavitary cardiac mass due to fibrosing mediastinitis. This rare disorder, which is characterized by invasive proliferation of fibrous tissue within the mediastinum, should be included in the differential diagnosis of intracardiac tumours

Comportamento de mamoeiro dos grupos solo e formosa ante a presença de Asperisporium caricae Speg Maubl agente causal da pinta preta.

As variedades de mamoeiro são classificadas em dois grupos: Solo e Formosa. O grupo Solo, no qual se encontra a maioria das cultivares utilizadas no mundo, caracteriza-se pela precocidade na produção, frutos periformes ou arredondados, de tamanho pequeno e peso variando de 300 a 650 g, polpa laranja-avermelhada e de excelente sabor, indicada para consumo in natura. As cultivares desse grupo são geneticamente uniformes, consistindo de linhagens puras fixadas por sucessivas gerações de autofecundação. São amplamente utilizadas no mundo, havendo no Brasil o predomínio de duas cultivares: Sunrise Solo e Golden. O grupo Formosa é composto por mamoeiros híbridos de origem chinesa e brasileira com polpa avermelhada e tamanho médio (1000 a 1300 g). Esse grupo compreende, principalmente, híbridos F1. Os mais conhecidos são 'Tainung nº1', 'Tainung nº 2' e o híbrido Caliman 01, conhecido popularmente como 'Calimosa'. Os materiais desse grupo vêm conquistando espaço tanto no mercado interno quanto externo, onde se percebe um forte crescimento nas vendas, principalmente para a Europa, Canadá e Estados Unidos. Devido à conformação da copa, tamanho de frutos e outras características que diferenciam as plantas dos dois grupos recomenda-se utilizar os espaçamentos de 3,00 m x 2,00 m a 3,00 m x 2,50 m para variedades do grupo Solo e a adoção do espaçamento 4,0 m x 2,0 m para variedades do grupo Formosa. Com referência ao comportamento das plantas do grupo Solo ou do grupo Formosa ante a presença do fungo A. caricae, agente causal da Pinta Preta, ainda não existe um estudo comparativo entre eles, sendo portanto o objetivo deste trabalho.pdf 246

Hahn's Symmetric Quantum Variational Calculus

We introduce and develop the Hahn symmetric quantum calculus with applications to the calculus of variations. Namely, we obtain a necessary optimality condition of Euler-Lagrange type and a sufficient optimality condition for variational problems within the context of Hahn's symmetric calculus. Moreover, we show the effectiveness of Leitmann's direct method when applied to Hahn's symmetric variational calculus. Illustrative examples are provided.Comment: This is a preprint of a paper whose final and definite form will appear in the international journal Numerical Algebra, Control and Optimization (NACO). Paper accepted for publication 06-Sept-201

Immersiveness of ubiquitous computing environments prototypes: A case study

The development of ubiquitous computing (ubicomp) environments raises several challenges in terms of their evaluation. Ubicomp virtual reality prototyping tools enable users to experience the system to be developed and are of great help to face those challenges, as they support developers in assessing the consequences of a design decision in the early phases of development. Given the situated nature of ubicomp environments, a particular issue to consider is the level of realism provided by the prototypes. This work presents a case study where two ubicomp prototypes, featuring different levels of immersion (desktop-based versus CAVE-based), were developed and compared. The goal was to determine the cost/benefits relation of both solutions, which provided better user experience results, and whether or not simpler solutions provide the same user experience results as more elaborate one.Fundação para a Ciência e a Tecnologia (FCT) through Projecto Estratégico – LA 9 – 2014-2015 (PEst-OE/EEI/LA0009/201