Results 31 to 40 of about 2,112 (115)

IX Fórum de Desenvolvimento Territorial e Meio Ambiente: A Sustentabilidade na Atividade de Mineração

Revista Brasileira Multidisciplinar - ReBraM /Brazilian Multidisciplinay Journal, 2017
Nesta edição da Revista Brasileira Multidisciplinar destacamos às publicações referentes ao IX Fórum Interdisciplinar da Universidade de Araraquara. O IX Fórum Interdisciplinar da Universidade de Araraquara ocorreu no dia 07/10/2016, nas dependências ...
Vários(as) Autores(as)
doaj   +1 more source

Precipitation of niobic acid from potassium niobate in sulphuric acid solution: A route to niobium oxide

The Canadian Journal of Chemical Engineering, Volume 104, Issue 8, Page 4419-4434, August 2026.
Graphical abstract illustrating the niobic acid precipitation process applied and the product obtained. Abstract This study investigates the precipitation of niobic acid (Nb2O5.nH2O) from potassium niobate solution with addition of sulphuric acid, and its subsequent thermal conversion into niobium oxide (Nb2O5). Thermodynamic modelling with PHREEQC and
Cássia R. Souza, Gabriela C. Silva, Isabel P. Silva, Frederico M. Penha, Sônia D. F. Rocha   +4 more
wiley   +1 more source

A Survey of Eyeless Pseudosinella Schäffer, 1897 (Collembola: Entomobryidae) From Brazil Reveals a New Cave‐Dwelling Species From Minas Gerais State

Austral Entomology, Volume 65, Issue 3, August 2026.
ABSTRACT Herein, a new species of Pseudosinella is described from Minas Gerais State, Brazil. This was possible after reanalysing six species similar to the new species: Pseudosinella alfanjeunguiculata Bellini, Cipola & Souza; Pseudosinella aphelabiata Bellini, Cipola & Souza; Pseudosinella diamantinensis Bellini, Cipola & Souza, 2020; Pseudosinella ...
Nikolas G. Cipola, Maria F. Cordova‐Hernandez, José W. de Morais, Stéphanie dos S. Viana   +3 more
wiley   +1 more source

Critical Discourse Analysis in Corporate Reports: Legitimation Strategies in the Context of Environmental Controversies

Corporate Social Responsibility and Environmental Management, Volume 33, Issue 3, Page 3563-3581, May 2026.
ABSTRACT This study examines the use of environmental disclosure as a strategic tool to manage legitimacy crises in a mining company, adopting critical discourse analysis (CDA) as the main methodology. Focusing on a case of environmental disaster, this research reveals how corporate narratives can be manipulated to minimize responsibility and reinforce
Renata Luiza de Castilho Rossoni, Manolita Correia Lima   +1 more
wiley   +1 more source

Environmental Contamination Affects Associated Bacterial Communities in a Neotropical Arboreal Ant

Biotropica, Volume 58, Issue 3, May 2026.
Environmental stressors such as contamination from mining tailings can alter microbial communities associated with insects, including social ants. Ants, as widespread and ecologically influential insects with stable microbial associations, offer a relevant model to examine these effects.
Marília R. Bitar, Aristóteles Góes‐Neto, Paulo S. Oliveira, Corrie S. Moreau, Sérvio P. Ribeiro   +4 more
wiley   +1 more source

Effect of MnO2–TiO2 and Nb2O5 on the Fabrication and Properties of Alumina Ceramics Produced via Vat Photopolymerization

Journal of the American Ceramic Society, Volume 109, Issue 5, May 2026.
ABSTRACT Additive manufacturing of ceramics allows the production of complex, small‐batch parts. Among available methods, digital light processing (DLP) offers high‐resolution results with excellent surface finish. LCD‐based DLP printers are cost‐effective due to simpler optics, though they require suspensions with high solid content (> 40 vol%) and ...
J. R. Verza, I. L. Camargo, A. P. Luz
wiley   +1 more source

Silicose nas pedreiras: a sutil diferença entre conhecer e adoecer. Intervenções em Saúde do Trabalhador na explotação de rochas ornamentais

Cadernos de Saúde Coletiva, 2021
Resumo Introdução Trabalhadores nas pedreiras de rochas ornamentais estão expostos a vários riscos ocupacionais, no entanto destacamos a ocorrência da principal doença pulmonar associada à inalação de partículas de sílica.
Roberta Guio Azevedo, Gabriel Eduardo Schütz   +1 more
doaj   +1 more source

A Simple Real-Time Method for Detecting Low Performance in Wet High-Intensity Magnetic Separators (WHIMSs) Due to Coil Malfunction

Inventions
Wet High-Intensity Magnetic Separators (WHIMSs) have become well established in mineral processing operations by efficiently separating particles based on their magnetic properties.
Ricardo B. Ventura, Alan K. Rêgo Segundo, Thiago A. M. Euzébio   +2 more
doaj   +1 more source

Incorporation of Coconut Fibers Into Clay‐Based Mortars: A Study on Mechanical and Microscopic Behavior

International Journal of Ceramic Engineering &Science, Volume 8, Issue 2, March 2026.
Clay‐based mortar reinforced with coconut fibers showed improved flexural strength and promising mechanical performance, despite shrinkage‐induced cracks. The study highlights the potential of using waste and natural fibers in eco‐efficient mortars, emphasizing the importance of curing and moisture control.
Gabriela Machado Guimarães Ferreira, Sebastião Ribeiro   +1 more
wiley   +1 more source

Borehole Logging Lithological Classification in Carbonatite‐Hosted Niobium Deposit Integrating Geophysical and Geochemical Data With Self‐Organizing Maps

Geophysical Prospecting, Volume 74, Issue 3, March 2026.
ABSTRACT Lithological classification from borehole data remains challenging in geologically complex alkaline–carbonatite systems, where compositional overlap and gradual transitions between lithotypes limit conventional interpretation methods. This study presents an integrated and automated workflow for drill‐core lithological classification using self‐
Fabrizzio R. Costa, Lívia Namie S. Nishimura, Reginaldo Antonio R. Filho, Bruno P. Milanezi, Dong Yaosong, Cleyton de C. Carneiro, Carina Ulsen   +6 more
wiley   +1 more source