2,733 research outputs found

    Taste panel quality evaluation of 'Hayward' kiwifruit of different origins

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    In Portugal, the regions of Entre-Douro e Minho and Beira Litoral have exceptional conditions for the production of good quality kiwifruit. However, demand exceeds local supply resulting in importation of kiwifruit from Italy, Chile and New Zealand. Taste panels were run in December, May and June to study the preferences of Portuguese consumers for 'Hayward' kiwifruit. In December, a comparison was made between kiwifruit from Portugal and Italy, in May between kiwifruit from Portugal and Chile and in June between kiwifruit from Portugal, Chile and New Zealand. Attributes assessed by panellists were: appearance, texture, flavour, sweetness and acidity. The same samples were analyzed for: weight, equatorial and longitudinal diameter, firmness, soluble solids (as measured by refractometer) and titratable acidity. In May, panellists preferred Portuguese kiwifruit, but in December and June the preference was not so clear. In December, Portuguese kiwifruit were not at the eating ripe stage and in June they were at the end of their storage life (bad appearance but better flavour, sweetness and texture)

    Fractal Subsystem Symmetries, 't Hooft Anomalies, and UV/IR Mixing

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    In this work, we study unconventional anisotropic topologically ordered phases in 3d that manifest type-II fractonic physics along sub-manifolds. While they behave as usual topological order along a preferred spatial direction, their physics along perpendicular planes is dictated by the presence of fractal subsystem symmetries, completely restricting the mobility of anyonic excitations and their bound states. We consider an explicit lattice model realization of such phases and proceed to study their properties under periodic boundary conditions and, later, in the presence of boundaries. We find that for specific lattice sizes, the system possesses line and fractal membrane symmetries that are mutually anomalous, resulting in a non-trivially gapped ground state space. This amounts to the spontaneous breaking of the fractal symmetries, implying a sub-extensive ground state degeneracy. For the remaining system sizes the fractal symmetries are explicitly broken by the periodic boundary conditions, which is intrinsically related to the uniqueness of the ground state. Despite of that, the system is still topologically ordered since locally created quasi-particles have nontrivial mutual statistics and, in the presence of boundaries, it still presents anomalous edge modes. The intricate symmetry interplay dictated by the lattice size is a wild manifestation of ultraviolet/infrared (UV/IR) mixing.Comment: 7+7 pages, 5+5 figure

    Ultrafast Dynamics Of Au Nanopyramid Interfaces Prepared By Nanosphere Lithography: Effect Of Substrate Chemical Composition

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    Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)This work describes ultrafast spectroscopy studies of Au triangular pyramid particle arrays deposited over glass (termed Au/glass), and 190 nm indium tin oxide (ITO) film (termed Au/ITO/glass) prepared by nanosphere lithography. The linear absorption spectra of Au/glass and Au/ITO/glass exhibit surface plasmon resonances at 800 and 870 nm, respectively, in good agreement with discrete dipole approximation simulations. Ultrafast pump-probe measurements at wavelengths below resonance, at resonance, and above the surface plasmon resonance for each of these two systems are presented. The pump-probe measurements on both systems can be well fit with a model accounting for electron-electron scattering, electron-phonon coupling, and acoustic oscillations on top of cooling of the gold lattice. Numerical simulations employing a two-temperature model are consistent with the single-color pump-probe exponential decays. The wavelength-dependent pump-probe results are interpreted in terms of the complex wavelength-dependent refractive index of gold. We show that this interpretation is consistent with diffractive-optic four-wave mixing spectroscopy measurements of absorptive and dispersive parts of the third-order nonlinear polarization at 800 nm.272423433FAPESP [2008/10593-0, 2015/08831-4]Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

    Atropelamentos e novos registros para tatu-canastra (Priodontes maximus) no centro-oeste do Brasil

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    Despite the widespread distribution of the giant armadillo Priodontes maximus, this species isfound at low densities, often in disrupted populations. Here we report 12 new records, including five incidentsof roadkill of P. maximus in different points of the Cerrado and one in an Atlantic Forest fragment in centralwesternBrazil. In addition to the relevant records, we discuss the negative effects of roadkills, which is a seriousissue for the conservation and maintenance of local populations of giant armadillo.Atropelamentos e novos registros para tatu-canastra (Priodontes maximus) no centro-oeste do Brasil. Apesar da ampla distribuição do tatu-canastra Priodontes maximus, esta espécie apresenta baixas densidades em populações não conectadas. Aqui, relatamos 12 novos registros, incluindo cinco atropelamentos rodoviários de P. maximus em diferentes pontos de Cerrado e um em fragmento de Floresta Atlântica no centro-oeste do Brasil. Além dos registros relevantes, discutimos o efeito negativo da perda de espécimes por atropelamentos em estradas, o qual é um problema sério para a conservação e manutenção de populações locais de tatu-canastra.Fil: Hannibal, Wellington. Universidade Federal de Goiás; BrasilFil: Leme Da Cunha, Nicolay. Universidade Federal do Mato Grosso do Sul; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Dalponti, Guilherme. Universidade Federal do Mato Grosso do Sul; BrasilFil: Oliveira, Seixas R.. Instituto Federal Goiano; BrasilFil: Pereira, Katia R. F.. Universidade Anhaguera; Brasi

    Characters associated with viviparity in common bean.

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    This study was carried out to verify the correlation between the pod wall thickness and the percentage of germination of seeds in the pods

    Tephra glass chemistry provides storage and discharge details of five magma reservoirs which fed the 75 ka Youngest Toba Tuff eruption, northern Sumatra

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    The Youngest Toba Tuff contains five distinct glass populations, identified from Ba, Sr and Y compositions, termed PI (lowest Ba) – PV (highest Ba), representing five compositionally distinct pre‐eruptive magma batches that fed the eruption. The PI–PV compositions display systematic changes, with higher FeO, CaO, MgO, TiO₂ and lower incompatible element concentrations in the low‐SiO₂ PIV/PV, than the high‐SiO₂ PI–PIII compositions. Glass shard abundances indicate PIV and PV were the least voluminous magma batches, and PI and PIII the most voluminous. Pressure estimates using rhyolite‐MELTS indicate PV magma equilibrated at ~6 km, and PI magma at ~3.8 km. Glass population proportions in distal tephra and proximal (caldera‐wall) material describe an eruption which commenced by emptying the deepest PIV and PV reservoirs, this being preferentially deposited in a narrow band across southern India (possibly due to jet‐stream and/or plinian eruption transport), and as abundant pumice clasts in the lowermost proximal ignimbrites. Later, shallower magma reservoirs erupted, with PI being the most abundant as the eruption ended, sourcing the majority of distal ash from co‐ignimbrite clouds (PI‐ and PIII‐dominant), where associated ignimbrites isolated earlier (PIV‐ and PV‐rich) deposits. This study shows how analysis of tephra glass compositional data can yield pre‐eruption magma volume estimates, and enable aspects of magma storage conditions and eruption dynamics to be described
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