1,346 research outputs found
Farinha integral e raspa residual de mandioca na alimentação de frangos de corte.
bitstream/item/58593/1/CUsersPiazzonDocuments199.pd
Utilização do farelo de canola em rações para frangos de corte.
O que e farelo de canola?; O valor nutritivo do farelo de canola; Utilização do farelo de canola; Cuidados com o uso do farelo de canola.bitstream/item/59455/1/CUsersPiazzonDocuments4.pd
Global priorities for conservation across multiple dimensions of mammalian diversity
Conservation priorities that are based on species distribution, endemism, and vulnerability may underrepresent biologically unique species as well as their functional roles and evolutionary histories. To ensure that priorities are biologically comprehensive, multiple dimensions of diversity must be considered. Further, understanding how the different dimensions relate to one another spatially is important for conservation prioritization, but the relationship remains poorly understood. Here, we use spatial conservation planning to (i) identify and compare priority regions for global mammal conservation across three key dimensions of biodiversity-taxonomic, phylogenetic, and traits-and (ii) determine the overlap of these regions with the locations of threatened species and existing protected areas. We show that priority areas for mammal conservation exhibit low overlap across the three dimensions, highlighting the need for an integrative approach for biodiversity conservation. Additionally, currently protected areas poorly represent the three dimensions of mammalian biodiversity. We identify areas of high conservation priority among and across the dimensions that should receive special attention for expanding the global protected area network. These high-priority areas, combined with areas of high priority for other taxonomic groups and with social, economic, and political considerations, provide a biological foundation for future conservation planning efforts
Chemical composition and minerals in pyrite ash of an abandoned sulphuric acid production plant
The extraction of sulphur produces a hematite-rich waste, known as roasted pyrite ash, which contains significant amounts of environmentally sensitive elements in variable concentrations and modes of occurrence. Whilst the mineralogy of roasted pyrite ash associated with iron or copper mining has been studied, as this is the main source of sulphur worldwide, the mineralogy, and more importantly, the characterization of submicron, ultrafine and nanoparticles, in coal-derived roasted pyrite ash remain to be resolved. In this work we provide essential data on the chemical composition and nanomineralogical assemblage of roasted pyrite ash. XRD, HR-TEM and FE-SEM were used to identify a large variety of minerals of anthropogenic origin. These phases result from highly complex chemical reactions occurring during the processing of coal pyrite of southern Brazil for sulphur extraction and further manufacture of sulphuric acid. Iron-rich submicron, ultrafine and nanoparticles within the ash may contain high proportions of toxic elements such as As, Se, U, among others. A number of elements, such as As, Cr, Cu, Co, La, Mn, Ni, Pb, Sb, Se, Sr, Ti, Zn, and Zr, were found to be present in individual nanoparticles and submicron, ultrafine and nanominerals (e.g. oxides, sulphates, clays) in concentrations of up to 5%. The study of nanominerals in roasted pyrite ash from coal rejects is important to develop an understanding on the nature of this by-product, and to assess the interaction between emitted nanominerals, ultra-fine particles, and atmospheric gases, rain or body fluids, and thus to evaluate the environmental and health impacts of pyrite ash materials
Desempenho reprodutivo de bovinos na sub-região dos Paiaguas do pantanal Mato-Grossense. I. Efeito da suplementação mineral e da idade de desmama sobre a idade e o peso ao primeiro parto.
Foram estudados os efeitos da suplementação mineral e da idade a desmama sobre a idade e o peso ao primeiro parto de novilhas aneloradas na sub-região de Paiaguas, do Pantanal Mato-Grossense, através de fatorial em delineamento inteiramente casualizado
Utilização do triguilho em rações para frangos de corte.
O que e triguilho?; O valor nutritivo do triguilho; Utilização do triguilho; Cuidados com o uso do triguilho.bitstream/item/59457/1/CUsersPiazzonDocuments3.pd
Horário de alimentação para aves de corte em época de calor.
bitstream/item/59437/1/CUsersPiazzonDocuments16.pd
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