Results 71 to 80 of about 269,018 (211)

Functional Morphology of the Thoracic Limb in the Silky Anteater (Cyclopes didactylus): A Comparative Study With Tamandua tetradactyla

Acta Zoologica, EarlyView.
ABSTRACT The order Xenarthra presents unique morphophysiological adaptations related to its specialized ecological niches. This study investigates the functional morphology and comparative myology of the thoracic limb in Cyclopes didactylus (silky anteater) and Tamandua tetradactyla (southern tamandua) to elucidate how muscle arrangements support ...
Julia Vaz Feio, Marcia Cristina Conceição da Costa, Érika Branco, Ana Rita de Lima   +3 more
wiley   +1 more source

Assessment of NORM in bauxite residue to facilitate valorization [PDF]

, 2018
In the new Euratom Basic Safety Standard (BSS), materials with elevated concentrations of natural radionuclides can be considered as a potential source of radiological exposure.
Goronovski, Andrei, Tkaczyk, Alan H.
core  

Enhancing solidification in one-part geopolymer systems through alkali-thermal activation of bauxite residue and silica fume integration

Case Studies in Construction Materials
This work describes the synthesis of geopolymers, a family of amorphous alumino-silicates, employing Silica fume and bauxite waste as precursor materials in an alkali-activated polycondensation reaction and the investigation of their properties.
Harini Konduru, S Karthiyaini
doaj   +1 more source

Contestation Between the State, Oil and Fishers in Trinidad and Tobago: (Re)producing ‘Edge’ Populations on the Post‐Plantation Extraction Frontier

Journal of Agrarian Change, EarlyView.
ABSTRACT Successive waves of extraction in the Caribbean—from plantation monocultures to oil and gas—have reshaped overlapping agrarian, coastal and marine environments, undermining the socio‐ecological foundations of small‐scale fisher livelihoods and generating ongoing conflict between the state, energy sector and fishing communities. Yet despite the
Merisa Thompson
wiley   +1 more source

Incorporating the radiological effects and environmental impact assessment of naturally occurring radioactive materials (NORM) into the life cycle environmental optimisation of bauxite residue (BR) valorisation [PDF]

, 2015
Bauxite Residue (BR) is a potentially valuable source of metals and construction materials, which the ETN REDMUD project aims to develop technologies to exploit.
Björklund, Anna, Joyce, Peter James, Goronovski, Andrei, Tkaczyk, Alan Henry   +3 more
core  

Distribution of Selected Trace Elements in the Bayer Process

Metals, 2018
The aim of this work was to achieve an understanding of the distribution of selected bauxite trace elements (gallium (Ga), vanadium (V), arsenic (As), chromium (Cr), rare earth elements (REEs), scandium (Sc)) in the Bayer process.
Johannes Vind, Alexandra Alexandri, Vicky Vassiliadou, Dimitrios Panias   +3 more
doaj   +1 more source

Impact of bauxite mining on mosquito communities (Diptera: Culicidae) and pathogen transmission risks in the eastern Amazon

Medical and Veterinary Entomology, EarlyView.
Bauxite mining in the Amazon alters mosquito communities, favouring anthropophilic and generalist vectors while reducing species diversity and the variety of blood meal sources. Molecular analyses identified humans, tapirs and deer as the primary blood meal sources.
Mayron Mielly Morais Pacheco, Poliana da Silva Lemos, Mônica Silva Coelho, Tatiane Marques Porangaba de Oliveira, Luciano Chaves Franco Filho, Øystein Wiig, Ana Cristina Mendes‐Oliveira, Leonardo Sena, Maria Anice Mureb Sallum   +8 more
wiley   +1 more source

Evolution of ecological indicators in the assessment of restoration of mining‐degraded riparian forests: a global bibliometric analysis (1990–2024)

Restoration Ecology, EarlyView.
Abstract Introduction The restoration of mining‐degraded riparian forests faces challenges due to structural, compositional, and functional impacts on these ecosystems. The demand for effective monitoring requires an understanding of how ecological indicators have been applied to assess post‐mining restoration success.
Marcele F. Pereira, Brenda R. F. da Silva, Paula D. M. Moraes, Vitoria L. dos Passos, Ricardo C. L. Machado, Julia I. M. Rodrigues, Walmer B. R. Martins   +6 more
wiley   +1 more source

Refractory Metakaolin Geopolymers: Achieving High Mechanical Strength and Near‐Zero Shrinkage After Exposure to 800°C

Journal of the American Ceramic Society, Volume 109, Issue 11, November 2026.
ABSTRACT Metakaolin‐based geopolymers are candidate binders for refractory and fire‐resistant components because they combine ceramic‐like thermal stability with low‐temperature processing. Their use is still restricted by a trade‐off: Formulations that develop high strength shrink substantially near 800°C, while formulations that remain dimensionally ...
Maria Fernanda Dornelles Howes, Ruby Mejía de Gutiérrez, Rafael Robayo‐Salazar, Paulo Matos, Robinson Carlos Dudley Cruz, Natalia de Freitas Daudt, Erich D. Rodríguez   +6 more
wiley   +1 more source

Ecological stoichiometry of microbial biomass carbon, nitrogen and phosphorus on bauxite residue disposal areas [PDF]

, 2020
Ecological succession by microbial activity on bauxite residue disposal areas (BRDAs) would accumulate nutrients and convert the residue into a soil-like material. However, the role of microorganisms in nutrient cycling remains elusive on BRDAs.
Wu, H., Cheng, Q., Xue, R., Xue, S., Zhou, L., Hartley, W., Zhang, Y.   +6 more
core   +1 more source