Time filter

Source Type

Paschoaloto J.R.,Sao Paulo State University | Ezequiel J.M.B.,Sao Paulo State University | Almeida M.T.C.,Sao Paulo State University | Favaro V.R.,Empresa de Pesquisa Agropecuaria e Extensao Rural de Santa Catarina | And 3 more authors.
Ciencia Rural

The increasing availability of crude glycerin from biodiesel production has generated great stock in the industries. To solve this problem, crude glycerin is being used as an energy source to replace corn in livestock diets. This study evaluated the effects of the association of crude glycerin (10% on DM of diets) with different roughages in Nellore cattle diets on ruminal pH and ammonia, degradability, digestibility of dry matter and nutrients, and greenhouse gas production. Six ruminally cannulated Nellore steers were assigned to a 6×6 Latin square design. The following treatments were evaluated: Hydrolyzed Sugarcane associated or not with crude glycerin, Corn Silage associated or not with crude glycerin or Tifton-85 Hay associated or not with crude glycerin. Association of crude glycerin with roughages did not affect the rumen ammonia concentration and pH and dry matter intake, but reduced the intake of NDF for diets with Hydrolyzed Sugarcane and Corn Silage and reduced the digestibility of DM, OM, NDF, EE, CNF and starch and decreased the effective degradation at the rate of 8% h-1 for diets with Tifton-85 Hay. The association crude glycerin with Hydrolyzed Sugarcane reduced the production of CH4 and CO2 in mL g-1 of DM. The inclusion of crude glycerin affects differently nutrient utilization in diets with Corn Silage, Hydrolyzed Sugarcane or Tifton-85 hay. Moreover, promotes mitigation of greenhouse gases in diets with Hydrolyzed Sugarcane. Association of crude glycerin with Corn Silage in Nellore cattle diets showed better conditions of ruminal fermentation and utilization of nutrients. © 2016, Universidade Federal de Santa Maria. All rights reserved. Source

de Lima T.D.D.,Centro Estadual Of Educacao Tecnologica Paula Souza | Gil A.S.B.,Museu Paraense Emilio Goeldi MPEG | Trevisan R.,Federal University of Santa Catarina

Eleocharis pseudobulbosa, a new species of Cyperaceae from Southern Brazil (Capão Bonito, São Paulo), is here described based on external morphological studies. This species is characterized by the presence of conspicuous stolons with straw-colored scales, forming a bulb-like structure in the growing points of the new culms; circular to oval culms in cross section; spikelets with small number of flowers [10-25(-30)]; achene small (0.6 mm long) and slightly reticulate; and stylopodium as wide as the achene. A detailed illustration and a diagnostic comparison with close morphological related species are presented. © 2014 Magnolia Press. Source

Pereira I.L.,Municipal University of Sao Caetano do Sul | Pereira I.L.,Centro Estadual Of Educacao Tecnologica Paula Souza | Crispim S.F.,Municipal University of Sao Caetano do Sul | Crispim S.F.,University of Sao Paulo
Gestao e Producao

One of the main purposes of Administration is the systematization of best practices that support the achievement of organizational objectives, mainly shareholder value in the case of for-profit companies. The aim of this study was to determine to what extent the factors identified as explanatory for achieving success in American companies were also present in Brazilian companies with similar value performance. This is a descriptive study based on field survey design. A 24-year (1988-2012) data survey of market value of all Brazilian private equity companies listed on the BM&F BOVESPA identified seven companies that met the performance parameters established in the research. Executives, or former executives, from these companies collaborated with this study, answering questions about the seven explanatory success factors identified in the research Good to Great, Collins. The adherence - or degree of alignment - observed for each factor is as follows: continuous improvement (90%); attitude toward problems (86%); strategic focus (86%); discipline (86%); leadership (82%); team (80%) and relationship with technology (78%). We conclude that, in general, the factors identified as explanatory for the high performance of American companies also significantly explain the success of Brazilian companies. This research contributes to endorse market value as a performance indicator for long-term analysis of Brazilian companies; identify Brazilian listed companies with sustained high performance; improve the understanding of strategic competitiveness factors of high performance Brazilian companies; identify possible ways to improve the performance of companies; and identify opportunities for future studies on the value of companies, competitiveness and explanatory factors. Source

Xavier M.D.,Nadir Dias de Figueiredo | Xavier M.D.,Centro Estadual Of Educacao Tecnologica Paula Souza | de Lima N.B.,Brazilian Nuclear Energy Research Institute (IPEN) | Plaut R.L.,University of Sao Paulo | Schon C.G.,University of Sao Paulo
International Journal of Advanced Manufacturing Technology

This work aims at studying the influence of the strain path upon the FLC0 formability parameter, the root of the forming limit curves (FLC). The investigation was conducted in an interstitial free (IF) quality steel. The FLC0 parameter was evaluated in an intrinsic tensile test in near plane strain (NPS) condition, but following two strain paths. The first one being a uniaxial (proportional) path up to initial necking. The second (non-proportional) path corresponded to applying 15 % nominal plastic strain in one direction (near plane strain) followed by a second deformation applied in the orthogonal direction up to the rupture of the samples. A reduction in the limit strains corresponding to FLC0 in the non-proportional test has been observed. The forming limit stress curves (FLSC) and the critical values FLSD0 are also related to these trajectories. A simulation using finite element method (FEM) has been applied to analyze the evolution of stress and strain during the two paths, and the results have been found consistent for both proportional and non-proportional paths. Texture and surface roughness evolution of the sheet were also measured and related to the applied strain paths. © 2015, Springer-Verlag London. Source

Neto M.D.B.,Brazilian Technological Institute of Aeronautics | Sales R.D.C.M.,Brazilian Technological Institute of Aeronautics | Sales R.D.C.M.,Centro Estadual Of Educacao Tecnologica Paula Souza | Koshun I.,Brazilian Technological Institute of Aeronautics | Rocco J.A.F.F.,Brazilian Technological Institute of Aeronautics
Journal of Aerospace Technology and Management

This paper describes the polycarbonate acrylic laminated development that can be applied in aeronautics and aerospace transparencies. The case studied is a laminated double-curved transparency (bubble form) used in an observation side window of a military aircraft. Side windows need strength and specific characteristics, similar to windshields, allowing the perfect visualization and image capture. Laminated transparencies composed by different materials have better qualities than the monolithic ones. This kind of transparency can offer high mechanical and chemical resistance, high transparency, no fragmentation and easy maintenance or recovery. A significant amount of information about materials and processes was jointed in order to build the reinforced transparency and validate this study. The final results were analyzed based on two points of view: mechanic resistance and, especially, optical quality. © 2016. Journal of Aerospace Technology and Management. all right reserved. Source

Discover hidden collaborations