ESTUDO GEOMETALÚRGICO DE FOSFATO PARA MAIOR EFICIÊNCIA NA RECUPERAÇÃO METALÚRGICA E AUMENTO DA VIDA ÚTIL DE UMA MINERADORA NO ESTADO DE GOIÁS

Resumo: Este projeto de pesquisa foi realizado em empresa mineradora na área de minerais fosfatados (apatita) para fabricação de fertilizante, fosfato bicálcico e ácido fosfórico, teve como objetivo otimizar o processo de beneficiamento de rocha fosfatada determinando o melhor blend para obtenção do maior rendimento metalúrgico e maior aproveitamento da mina aumentando a sua vida útil.  A intenção era reduzir o teor de Fe2O3 no concentrado final, reduzir a variação do blend de tipologias. A mina em questão é composta basicamente de minerais micáceos, óxidos e uma tipologia denominada Bloco Preto que apresenta valor de WI (Work Index) mais elevado, com liberação do mineral apatita a partir de 150 (Microns) mesh, sendo que a liberação para as demais tipologias ocorre em 65 (Microns) mesh, ou seja, é necessário maior consumo energético para liberação e consequentemente obtenção do máximo rendimento metalúrgico para esta tipologia. Após a conclusão do estudo de cada tipologia individualmente, foram feitos diversos testes para determinar o melhor blend, considerando a capacidade instalada na usina de beneficiamento. Chegando na seguinte composição:  40% de Micáceos; 55% de Óxidos; 5 % de Bloco Preto. Com esta composição houve aumento do rendimento metalúrigico, sendo possível aproveitamento de 5% de Bloco Preto, material que não era utilizado anteriormente, aumentando assim a vida útil da mina.  Os testes mostraram que é possível elevar ainda mais a recuperação metalúrgica, utilizando-se maior proporção de Bloco Preto e obtendo um concentrado final com teor de óxido de ferro (Fe2O3) abaixo de 2,9 %, desde que haja modificação na rota de processo, pois a liberação da apatita nesta tipologia ocorre em frações mais finas. Como parte deste trabalho foram realizados testes com diferentes concentrações de reagentes para a flotação e diferentes pH’s visando atingir máxima recuperação metalúrgica.   Palavras-chave: Apatita, Geometalurgia, Flotaçã

Bacillus subtilis as a growth promoter inoculant on soybean plants in field / Bacillus subtilis como inoculante promotor de crescimento em plantas de soja em campo

The use of microorganisms as a plant growth promoter such as Bacillus subtilis is an alternative that may provide benefits to soybean cultivation, improved development, and productivity. The objective of this work was to evaluate the biomass and productivity of soybean inoculated by Bacillus subtilis Bs10 cultivated in field, in Gurupi, Tocantins, in the 2015/2016 and 2016/2017 seasons. Four treatments inoculated with liquid formulation based on Bacillus subtilis Bs10 were carried out in different doses (100, 200, 300 and 400 ml for 50 kg of seeds) and compared to a commercial product based on B. subtilis (positive control) and a non-inoculated treatment (absolute control). Inoculation by B. subtilis Bs10 positively influenced biomass, stand maintenance and yield of soybean under field conditions in both harvests. These yields were 26.6% (200 mL) and 31.8% (300 mL) higher than the absolute control treatment for a 2015/2016 seasons and between 10.8 and 15.43% for a 2016/2017 seasons. Thus, there were significant results from the dose tested 200 mL of inoculant per 50 kg of seed. The strain of B. subtilis Bs10 can be recommended as plant growth promoting inoculant in soybean

BIOLOGICAL CONTROL OF PLANT PATHOGENS BY Bacillus subtilis in vitro

Considerando as perdas causadas por doenças em diversas culturas, as rizobactérias se apresentam como uma alternativa para manejar esses patógenos. O trabalho teve por finalidade avaliar a potencialidade antagonista de isolados de Bacillus subitilis aos fungos fitopatogênicos Fusarium subglutinans, Curvularia lunata e Bipolaris spp.. Foram estudados sete isolados de B. subtilis e seus efeitos antagônicos em fungos fitopatogênicos utilizando quatro métodos: técnica de cultura fúngica sobre cultura antagonista, pareamento direto, pareamento com risco no centro da placa e técnica de círculo. Também foram avaliados os efeitos de metabólitos voláteis e termoestáveis desses isolados. O delineamento experimental utilizado foi inteiramente casualizado através de três repetições. As avaliações foram feitas aos três, seis, nove e doze dias para os quatro métodos e aos seis e doze dias para avaliação de metabólitos voláteis e termoestáveis, onde foram medidos o diâmetro da colônia e calculado a porcentagem de inibição de crescimento (PIC) do patógeno. Os isolados de B. subilis UFTBs 03, UFTBs 05, UFTBs 06 e UFTBs 07 foram eficazes na inibição de crescimento micelial dos fungos patogênicos F subglutinans, C lunata e Bipolaris spp. pelos quatro métodos. Os isolados UFTBs 02, UFTBs 03, UFTBs 06 e UFTBs 07 inibiram por metabólitos voláteis o crescimento micelial de F. subglutinans. Os isolados UFTBs 01, UFTBs 04, UFTBs 05, UFTBs 06 e UFTBs 07 foram capazes de inibir o crescimento micelial de F. subglutinans, C. lunata e Bipolaris spp. por metabólitos termoestáveis.Palavras-chave: Biocontrole, Rizobactérias, Antagonismo, Bacillus subitilis.Considering the losses caused by diseases in many cultures, rhizobacteria present themselves as an alternative for managing these pathogens. The work aimed to evaluate the potential antagonist of Bacillus subtilis isolates to pathogenic fungi Fusarium subglutinans, Curvularia lunata and Bipolaris spp. Seven were studied isolates of B. subtilis and its antagonistic effect on pathogenic fungi using four methods: fungal culture technique on culture antagonist, direct pairing, pairing with risk in the center of the plate and circle technique. Was also evaluated effect of volatile metabolites and thermostable these isolates. The experimental design was completely randomized with three repetitions. The assessments took the tree, six, nine and twelve day for the four methods and the six and twelve day to evaluate volatile metabolites and thermostable, which were measured the diameter of the colony and calculated the percentage growth inhibition (PGI) of the pathogen. B. subtilis isolates UFTBs 03, UFTBs 05, UFTBs 06 and UFTBs 07 were effective in inhibiting mycelial growth of pathogenic fungi F. subglutinans, C. lunata and Bipolaris spp. by four methods. Isolated UFTBs 02, UFTBs 03, UFTBs 06 and UFTBs 07 inhibited by volatile metabolites mycelial crecimento of F. subglutinans. Isolated UFTBs 01, UFTBs 04, UFTBs 05, UFTBs 06 and UFTBs 07 they were able to inhibit the mycelial growth of F. subglutinans, C. lunata and Bipolaris spp. by thermostable metabolites, so considering the antibiose the mechanism of action.Keywords: Biocontrol; Rhizobacteria; Antagonism; Bacillus subitilis

NEOTROPICAL CARNIVORES: a data set on carnivore distribution in the Neotropics

Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non-detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non-governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peer-reviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non-detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio-temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other large-scale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data

The ATLAS experiment at the CERN Large Hadron Collider: a description of the detector configuration for Run 3

Abstract The ATLAS detector is installed in its experimental cavern at Point 1 of the CERN Large Hadron Collider. During Run 2 of the LHC, a luminosity of  ℒ = 2 × 1034 cm-2 s-1 was routinely achieved at the start of fills, twice the design luminosity. For Run 3, accelerator improvements, notably luminosity levelling, allow sustained running at an instantaneous luminosity of  ℒ = 2 × 1034 cm-2 s-1, with an average of up to 60 interactions per bunch crossing. The ATLAS detector has been upgraded to recover Run 1 single-lepton trigger thresholds while operating comfortably under Run 3 sustained pileup conditions. A fourth pixel layer 3.3 cm from the beam axis was added before Run 2 to improve vertex reconstruction and b-tagging performance. New Liquid Argon Calorimeter digital trigger electronics, with corresponding upgrades to the Trigger and Data Acquisition system, take advantage of a factor of 10 finer granularity to improve triggering on electrons, photons, taus, and hadronic signatures through increased pileup rejection. The inner muon endcap wheels were replaced by New Small Wheels with Micromegas and small-strip Thin Gap Chamber detectors, providing both precision tracking and Level-1 Muon trigger functionality. Trigger coverage of the inner barrel muon layer near one endcap region was augmented with modules integrating new thin-gap resistive plate chambers and smaller-diameter drift-tube chambers. Tile Calorimeter scintillation counters were added to improve electron energy resolution and background rejection. Upgrades to Minimum Bias Trigger Scintillators and Forward Detectors improve luminosity monitoring and enable total proton-proton cross section, diffractive physics, and heavy ion measurements. These upgrades are all compatible with operation in the much harsher environment anticipated after the High-Luminosity upgrade of the LHC and are the first steps towards preparing ATLAS for the High-Luminosity upgrade of the LHC. This paper describes the Run 3 configuration of the ATLAS detector.</jats:p

The ATLAS experiment at the CERN Large Hadron Collider: a description of the detector configuration for Run 3

The ATLAS detector is installed in its experimental cavern at Point 1 of the CERN Large Hadron Collider. During Run 2 of the LHC, a luminosity of ℒ = 2 × 1034 cm-2 s-1 was routinely achieved at the start of fills, twice the design luminosity. For Run 3, accelerator improvements, notably luminosity levelling, allow sustained running at an instantaneous luminosity of ℒ = 2 × 1034 cm-2 s-1, with an average of up to 60 interactions per bunch crossing. The ATLAS detector has been upgraded to recover Run 1 single-lepton trigger thresholds while operating comfortably under Run 3 sustained pileup conditions. A fourth pixel layer 3.3 cm from the beam axis was added before Run 2 to improve vertex reconstruction and b-tagging performance. New Liquid Argon Calorimeter digital trigger electronics, with corresponding upgrades to the Trigger and Data Acquisition system, take advantage of a factor of 10 finer granularity to improve triggering on electrons, photons, taus, and hadronic signatures through increased pileup rejection. The inner muon endcap wheels were replaced by New Small Wheels with Micromegas and small-strip Thin Gap Chamber detectors, providing both precision tracking and Level-1 Muon trigger functionality. Trigger coverage of the inner barrel muon layer near one endcap region was augmented with modules integrating new thin-gap resistive plate chambers and smaller-diameter drift-tube chambers. Tile Calorimeter scintillation counters were added to improve electron energy resolution and background rejection. Upgrades to Minimum Bias Trigger Scintillators and Forward Detectors improve luminosity monitoring and enable total proton-proton cross section, diffractive physics, and heavy ion measurements. These upgrades are all compatible with operation in the much harsher environment anticipated after the High-Luminosity upgrade of the LHC and are the first steps towards preparing ATLAS for the High-Luminosity upgrade of the LHC. This paper describes the Run 3 configuration of the ATLAS detector

The ATLAS experiment at the CERN Large Hadron Collider: a description of the detector configuration for Run 3

Abstract The ATLAS detector is installed in its experimental cavern at Point 1 of the CERN Large Hadron Collider. During Run 2 of the LHC, a luminosity of  ℒ = 2 × 1034 cm-2 s-1 was routinely achieved at the start of fills, twice the design luminosity. For Run 3, accelerator improvements, notably luminosity levelling, allow sustained running at an instantaneous luminosity of  ℒ = 2 × 1034 cm-2 s-1, with an average of up to 60 interactions per bunch crossing. The ATLAS detector has been upgraded to recover Run 1 single-lepton trigger thresholds while operating comfortably under Run 3 sustained pileup conditions. A fourth pixel layer 3.3 cm from the beam axis was added before Run 2 to improve vertex reconstruction and b-tagging performance. New Liquid Argon Calorimeter digital trigger electronics, with corresponding upgrades to the Trigger and Data Acquisition system, take advantage of a factor of 10 finer granularity to improve triggering on electrons, photons, taus, and hadronic signatures through increased pileup rejection. The inner muon endcap wheels were replaced by New Small Wheels with Micromegas and small-strip Thin Gap Chamber detectors, providing both precision tracking and Level-1 Muon trigger functionality. Trigger coverage of the inner barrel muon layer near one endcap region was augmented with modules integrating new thin-gap resistive plate chambers and smaller-diameter drift-tube chambers. Tile Calorimeter scintillation counters were added to improve electron energy resolution and background rejection. Upgrades to Minimum Bias Trigger Scintillators and Forward Detectors improve luminosity monitoring and enable total proton-proton cross section, diffractive physics, and heavy ion measurements. These upgrades are all compatible with operation in the much harsher environment anticipated after the High-Luminosity upgrade of the LHC and are the first steps towards preparing ATLAS for the High-Luminosity upgrade of the LHC. This paper describes the Run 3 configuration of the ATLAS detector.</jats:p