Results 21 to 30 of about 921,643 (195)

EFEITOS DA ADUBAÇÃO ORGÂNICA E MINERAL EM CULTIVARES DE MELÃO SOB CONDIÇÕES DE CASA DE VEGETAÇÃO

Revista Brasileira de Engenharia Agrícola e Ambiental, 1999
RESUMO Com o objetivo de se determinar o efeito da adubação orgânica e mineral na qualidade e conservação pós-colheita de melão ( Cucumis melo L.) realizou-se um experimento em condições de casa de vegetação, no Departamento de Engenharia Rural-UNESP ...
Jairo Augusto Campos de Araújo, Amilton Gurgel Guerra, José Fernando Durigan   +2 more
doaj   +1 more source

Scale up and simulation of Vertimill™ pilot test operated with copper ore

Journal of Materials Research and Technology, 2014
Vertimill™ has been used in regrind circuits during the past years due to its greater efficiency when compared to the conventional tube ball mill. This paper presents the Vertimill™ pilot grinding tests with a sample of copper ore carried out in closed ...
Douglas Batista Mazzinghy, Roberto Galéry, Claudio Luiz Schneider, Vladmir Kronemberger Alves   +3 more
doaj   +1 more source

Evolução do perfil dos ingressantes no curso de pós-graduação em engenharia mineral da Universidade Federal de Ouro Preto

OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA
Desde os anos 2000 o Programa de Pós-Graduação em Engenharia Mineral (PPGEM) da Universidade Federal de Ouro Preto (UFOP) introduz mestres e doutores no mercado de trabalho, sendo fundamentado no desenvolvimento de profissionais com base na pesquisa científica.
Mariana Caroline Andrade Silva, Adriano Raimundo Totou, Emanuel Pimenta Garrido, Pedro Henrique Lopes De Carvalho, Carlos Alberto Pereira   +4 more
openaire   +1 more source

Optimizing germination and cultivation of edible halophytes using effluents from an IMTA system

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Halophytes offer nature‐based solutions to food insecurity and soil degradation, while their integration into integrated multi‐trophic aquaculture (IMTA) systems promotes circular economy practices. This study aimed to optimize the germination and cultivation of edible halophytic species, namely Limbarda crithmoides, Suaeda vera and
Viana Castañeda‐Loaiza, Maria João Rodrigues, Nuno Neng, Célia Quintas, Isabel Ratão, Luísa Custódio   +5 more
wiley   +1 more source

ROCHAS ORNAMENTAIS SILICÁTICAS DO ESTADO DE PERNAMBUCO

Holos, 2013
As rochas ornamentais são materiais que agregam valor através de padrão cromático, desenho, textura e granulação. Segundo Mendes e Paiva, Pernambuco está inserido na Província Borborema, de evolução marcada por grande mobilidade tectônica, com ...
Felisbela Maria da Costa Oliveira, T. M. F. Kálix, M. L. S. C. Barros, Evenildo B. Melo, P. O. B. Morais   +4 more
doaj   +1 more source

Determination of Young’s Modulus by Specific Vibration of Basalt and Diabase

Advances in Materials Science and Engineering, 2020
The elasticity is an important parameter for the evaluation of the mechanical behavior of a rock mass and a fundamental factor in the definition of the resistance characteristics, stability, and blastability in rock blasts, and it is an important ...
Osvail André Quaglio, José Margarida da Silva, Edmo da Cunha Rodovalho, Leandro de Vilhena Costa   +3 more
doaj   +1 more source

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

Polymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco, Emilly Cruz da Silva, Glenda Sores Gomes, Joane Almeida Alves, Amanda Vidal, Leandro Argolo, Rafaela Ribeiro, Luciana Souza, José Augusto Pires Bitencourt, Leonardo Brasil Felipe, Leonie Asfora Sarubbo, Sidnei Cerqueira dos Santos   +11 more
wiley   +1 more source

Obtenção de material vitrocerâmico a partir de cinza pesada de carvão mineral [PDF]

, 2002
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Materiais.Este trabalho tem como objetivo a obtenção de vitrocerâmicos que derivem de vidros constituídos basicamente por elevadas ...
Neves, Etney
core  

On the Fenton’s process for the treatment of effluents from the dyeing of agates containing Rhodamine B and ethanol

Discover Chemical Engineering
In the processing of agates, the gemstone pieces are submitted to dyeing processes. One of the dyeing processes applied is with Rhodamine B, which provides a reddish-pink colouration. The practice generates a wastewater containing residual amounts of the
Cassiano R. dos Santos, Augusto C. Rodrigues, Fernanda da Silva Vilasbôas, Clóvia Marozzin Mistura, Ivo André Homrich Schneider   +4 more
doaj   +1 more source

Brown–Proschan Repair Policy for Repairable Systems Using the Discrete Weibull Failure Distribution and Markov Chains

Quality and Reliability Engineering International, EarlyView.
ABSTRACT A repairable system operates under a maintenance strategy involving scheduled preventive maintenance (PM) and corrective repair actions following failures. This study develops an exact analytical methodology using Markov chains with discrete states and time to calculate the expected number of failures E[N(t)]$\mathop {\mathbb {E}}[N(t)]$ under
Danilo G. O. Valadares, Roberto C. Quinino, Linda L. Ho, Frederico R. B. Cruz   +3 more
wiley   +1 more source