Unparticle physics and neutrino phenomenology

We have constrained unparticle interactions with neutrinos and electrons using available data on neutrino-electron elastic scattering and the four CERN LEP experiments data on mono photon production. We have found that, for neutrino-electron elastic scattering, the MUNU experiment gives better constraints than previous reported limits in the region d>1.5. The results are compared with the current astrophysical limits, pointing out the cases where these limits may or may not apply. We also discuss the sensitivity of future experiments to unparticle physics. In particular, we show that the measurement of coherent reactor neutrino scattering off nuclei could provide a good sensitivity to the couplings of unparticle interaction with neutrinos and quarks. We also discuss the case of future neutrino-electron experiments as well as the International Linear Collider.Comment: 20 pages, 5 figures. Minor changes, final versio

Realization of Rectangular Artificial Spin Ice and Direct Observation of High Energy Topology

In this letter, we have constructed and experimentally investigated frustrated arrays of dipoles forming two-dimensional artificial spin ices with different lattice parameters (rectangular arrays with horizontal and vertical lattice spacings denoted by $a$ and $b$ respectively). Arrays with three different ratios $\gamma =a/b = \sqrt{2}$, $\sqrt{3}$ and $\sqrt{4}$ are studied. Theoretical calculations of low-energy demagnetized configurations for these same parameters are also presented. Experimental data for demagnetized samples confirm most of the theoretical results. However, the highest energy topology (doubly-charged monopoles) does not emerge in our theoretical model, while they are seen in experiments for large enough $\gamma$. Our results also insinuate that magnetic monopoles may be almost free in rectangular lattices with a critical ratio $\gamma = \gamma_{c} = \sqrt{3}$, supporting previous theoretical predictions

Concerns with educating the public about donating and receiving gametes

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Isolation and identification of microbial populations from an odour treating biofilter

Complex odour emissions are normally associated to the operation of wastewater treatment plants, composting facilities and agro-industry activities. The most common contaminants are hydrogen sulfide (H2S), organic reduced sulfur compounds (e.g.,CH3SH), and volatile organic compounds (VOCs). These compounds can be treated using biological air treatment systems, such as biofilters. Five different types of material, including pieces of wood and polymeric material, were collected from different locations of a biofilter treating odours at an organic waste treatment plant and subjected to microbiological characterization. Colony forming units (CFU/g) ranged from 107 to 108 CFU/g from each different material analyzed. The different materials showed high heterogeneity of microbial colonization, being the diversity higher in a heather based material. After random amplification of polymorphic DNA (RAPD) analysis, a total of 22 different isolates were identified by 16S rRNA sequencing analysis. Ten isolates demonstrated capacity to grow on solid sulphur oxidizing medium. Their capacity to oxidize sulphur compounds in liquid medium is being further studied

Adoção de TIC e oferta de software na agropecuária: breve relato dos resultados do estudo SWAgro.

Resumo: O artigo tem por objetivo apresentar a oferta de soluções em tecnologia da informação aplicadas à agropecuária e um panorama sobre a adoção de Tecnologias de Informação e Comunicação (TIC) no setor agropecuário. Os resultados apresentados têm base naqueles obtidos no projeto Estudo do Mercado Brasileiro de Software para o Agronegócio? (SWAgro), desenvolvido pela Embrapa Informática Agropecuária e instituições parceiras entre 2008 a 2010. A metodologia utilizada no referido projeto contou com duas etapas: (i) revisão de literatura e (ii) mapeamento da oferta de software agropecuário por meio de uma pesquisa do tipo survey. Os resultados apresentados neste trabalho envolvem a caracterização das empresas desenvolvedoras de software agropecuário por porte e localização geográfica bem como o mapeamento dos produtos por elas ofertados por grupos de aplicação, a saber: administração/gerenciamento, manejo animal, cultivo vegetal, e controle de processo e/ou de atividades rurais.SIAGRO 2014

Cultura in vitro de embriões zigóticos de cupuaçuzeiro.

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