Results 51 to 60 of about 61,474 (312)
The mechanisms and drivers of lithification in slag‐dominated artificial ground
The Depositional Record, 2023 Unconsolidated artificial ground is an ever‐increasing feature on the Earth's surface but it poses various challenges such as pollutant release and ground instability.
John M. MacDonald +5 more
doaj +1 more source
REM: International Engineering Journal, 2022 A carbonate-silicate low weathering phosphate ore from an igneous origin deposit in Southeastern Brazil presents a challenge mainly for apatite flotation from its gangue minerals, calcite and dolomite, plus the presence of phlogopite, diopside, magnetite,
Isabel de Sousa Batista Carvalho +3 more
doaj +1 more source
Journal of Applied Polymer Science, EarlyView.The study assesses dye impacts on PA66/wool recycling via selective PA66 dissolution in calcium chloride–ethanol–water and water reprecipitation. Acid dyes migrate into solvent, yielding color‐free, melt‐spinnable PA66 and reusable wool. Metal‐complex dyes remain, altering PA66 melt viscosity and requiring extraction or repurposing.
Lukas Vonbrül +8 more
wiley +1 more source
The Anatomical Record, EarlyView.Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt +4 more
wiley +1 more source
Почвознание, агрохимия и екология, 2010 Accumulation of secondary calcium carbonates in arid and semiarid regions is а valuable tool in evaluating thе degree of soil evolution, soil age, paleoenvironmental reconstruction, soil classification and land use.
SHAHRAM МАNAFI
doaj
Marine Drugs, 2020 Structure-based tissue engineering requires large-scale 3D cell/tissue manufacture technologies, to produce biologically active scaffolds. Special attention is currently paid to naturally pre-designed scaffolds found in skeletons of marine sponges, which
Marcin Wysokowski +17 more
doaj +1 more source
Effect of Fe3+ on Flotation Separation of Fluorite and Calcite in Sodium Silicate System
Kuangchan zonghe liyong, 2023 This is an essay in the field of mineral processing engineering. Fluorite and calcite are calcium-bearing minerals with similar physical and chemical properties.
Jiangfeng Ning +5 more
doaj +1 more source
The Anatomical Record, EarlyView.Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano +3 more
wiley +1 more source
The Anatomical Record, EarlyView.Abstract Prozostrodon brasiliensis, a probainognathian cynodont of the clade Prozostrodontia, is recognized as a key taxon for understanding the origin of Mammaliaformes and mammals. Despite detailed investigations of its cranial anatomy, the postcranial skeleton has received comparatively less attention.
Iasmim M. Michelotti +4 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel +4 more
wiley +1 more source