[PDF] Top 20 REPOSITORIO INSTITUCIONAL DA UFOP: Iron ore tailings dry stacking in Pau Branco mine, Brazil.

... failures in recent years. Dam failures are associated with errors in design, implementation, operation, and monitoring (Azam, 2014, ...(dry stacking) is a safer alternative to tailings ... See full document

... amazonensis.29 This protection is associated with the development of a Thl type response as measured by increased IFN-r and lack of IL-4 production by spleen and lymph[r] ... See full document

... anemia in children and to identify predictors of this condition, including intestinal parasites, social, nutritional and environmental factors, and ...conducted in a sample of 414 chil- dren aged 6–71 ... See full document

... ethnography in education, interpreted as logic of inquiry, may naturally lead to a juxtaposition of complex perspectives and procedures of investigation of the social dynamics under scrutiny that a unique ... See full document

... grains in both side of the fracture surface were determined in horizontal EeW or in vertical orientation with respect to the microscope ...stage. In quartz only the c-axis orientation can be ... See full document

... Contaminated mine water remains a major problem worldwide and is associated with severe environmental, socio-economic, and public health ...2016). In Brazil and the state of Minas Gerais in ... See full document

... kaolinite. In agreement, SEM analyses (Figure 5c) of the beige-white ma- trix show island of well defined hexagons of kaoli- nite, typical of muscovite alteration, surrounded by poorly-defined and small crystals ... See full document

... The Iron Quadrangle is located on the southern part of the São Francisco Craton (Almeida 1977). The regional geology was (Figure 1) initially de- scribed by Harder and Chamberlin (1915) and sub- sequently reviewed ... See full document

... Iron ore mining is a very important economic activity to ...increase in tailings generation, as well as its inadequate waste disposal, has awakened concerns over the sustainability of its ... See full document

... minerals in jigs is based on the stratification of particles in an aqueous medium, where ascending and descend- ing water currents fluidize and compress the grains into relatively homogenous ...trated ... See full document

... only in S4, which is coherent with XRD data presented ...minerals in the studied iron ore sample, as identified and semi-quantified by op- tical microscopy, were goethite ...shown in Fig. ... See full document

... No caso da areia industrial, constituída essencialmente de quartzo, a atrição auxilia na remoção de algumas impurezas (óxidos de ferro, minerais pesados e argilas). A atrição é feita para limpar a superfície das ... See full document

... ensaios in vitro são normalmente efetuados como um teste de triagem inicial na primeira fase da avaliação de ...celular in vitro sobre extratos de diferentes materiais é fundamental para o uso racional e ... See full document

... Para chegar na reta de Euler foi necessário revisar alguns conceitos primitivos e também utilizar dos 9 pontos notáveis do triângulo, como: Altura, Ponto Médio, Mediana, Mediatriz, Ortoc[r] ... See full document

... of iron ore tends to remain at lower levels than those achieved in the recent past and a significant increase in the projected volume for the coming years with the minimum investment in ... See full document

... tests in a ...variables in the performance of the equipment of the metallurgical in concentration ...consisted in the characterization of technological power and perform tests of concentration ... See full document

... of cosmetics, paints, tissues, water and air purifiers. The pyroelectricity and the emission of far infrared radiation of tourmaline are the main properties explored by most products. The black tourmaline shows ... See full document

... Applications in integer programming are found in many areas of knowledge, including vehicle routing, traveling salesman problem, nurse scheduling and school ...employed in solving MIP problems as a ... See full document

... Observamos, em nossa amostra, que os professores das instituições privadas de ensino lecionam um número maior de disciplinas do que professores das universidades federais: 5,2 discipli[r] ... See full document

... Para desenvolver esse raciocínio de forma mais completa, o ensino de Geometria na escola média deve contemplar também o estudo de propriedades d[r] ... See full document