Results 31 to 40 of about 7,568 (260)

Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima

Investigaciones Geográficas, 2015
Geomorphological features and sedimentary characteristics are analized from five sets of shallow sediment cores collected in lakes in the Fildes Peninsula, King George Island. The geomorphology of the area was observed and sediments samples were obtained
Rosemary Vieira, Humberto Marotta, Kátia Kellem da Rosa, Ricardo Jaña, Carolina Lorenz Simões, Enoil de Souza Júnior, Fabrício Ferreira, Liliane Ronquette Santos, João Victor dos Santos, Marcos Aurélio Perroni, Matheus Gonçalves, João Pedro Farias Santos, Raphael Issa Rodrigues, Janaína Cynthia Medeiros Galvão, João Paulo de Sá Felizardo   +14 more
doaj   +1 more source

7000 Years of Aboriginal Mining at Sugarloaf Hill in the Riverland Region of South Australia

Archaeology in Oceania, EarlyView.
ABSTRACT Silcrete and chert are commonly represented in Aboriginal archaeological lithic assemblages across large parts of the southwestern Murray‐Darling Basin (MDB). In South Australia (SA), these materials were sourced from a series of quarries located along the incised course of the Murray River through the upper Riverland region.
Craig Westell, Ian Moffat, Richard Fullagar, Amy Roberts, Justine Kemp, Mike Morley, Marc Fairhead, Simon Hoad, River Murray and Mallee Aboriginal Corporation   +8 more
wiley   +1 more source

Tunable amylopectin graft copolymers for flocculating and dewatering iron ore tailings

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Polyacrylamide (PAM), the standard flocculant for mining tailings, often produces turbid supernatants and poorly dewatered sediments, limiting water reuse and tailings densification. We synthesized amylopectin‐graft‐poly[(2‐methacryloyloxy)ethyl]trimethylammonium chloride (AP‐g‐PMETAC) copolymers with systematically varied graft frequency (N = 
Gustavo P. Zago, Reinaldo Giudici, João B. P. Soares   +2 more
wiley   +1 more source

Influence of the “Fire jet” finishing method of stone claddings on the mineralogical and textural characteristics and physical properties of ''pink Porriño'' granite

Materiales de Construccion, 1986
The effect of an industrial process of surface treatment ("fire jet") of ornamental rock slabs upon the mineralogical and textural characteristics of an igneous rock known commercially as "Pink Porriño" (Rosa Porriño) rom Galicia (NW Spain), has been ...
Ángel Rodríguez Rey, Vicente G. Ruiz de Argandoña, Lope Calleja Escudero   +2 more
doaj   +1 more source

Mineralogical Characteristics Study of Calcite from the Fujian Province, China

Crystals, 2022
With mineral in situ testing technology and ore deposit geochemistry development, calcite has become a hot topic in studying carbonate minerals. Four large-grain calcite crystals from Fujian, China, were used for a detailed study.
Zhe-Yi Zhao, Yu-Tao Lin, Yi Zhao, Bo Xu
doaj   +1 more source

Natural South African iron‐rich sand as a functional catalyst in hybrid photocatalytic wet peroxide oxidation technology for the degradation of methyl orange dye pollutant

The Canadian Journal of Chemical Engineering, EarlyView.
This research explored South African iron‐rich sand (SAIRS) as a natural catalyst for light‐mediated wet peroxide oxidation of methyl orange dye in wastewater and at an optimized of conditions of 3500 mg/L catalyst dose, 6 mM H2O2, and pH 2.5, SAIRS achieved 94% methyl orange degradation within 90 min under visible light.
Aaliyah Ebrahim, Stephen Sunday Emmanuel, Alicia Levana Dorling, Shepherd M. Tichapondwa   +3 more
wiley   +1 more source

Characterization of road surfacing aggregates based on their mineralogical fingerprint

Journal of Traffic and Transportation Engineering (English ed. Online), 2022
To ensure the safety of infrastructure users, the long-term skid resistance is a crucial factor and is determined in large by the mineralogical and morphological characteristics of surfacing aggregate.
Dawei Wang, Yulin He, Chonghui Wang, Zeyu Zhang, Guoyang Lu, Pengfei Liu, Markus Oeser   +6 more
doaj   +1 more source

Green and sustainable synthesis of magnetite from copper slag via citrate complexation for methylene blue dye removal from water

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, Karen Valencia García, Tania‐Ariadna García‐Mejía, Agileo Hernández‐Gordillo, Rosa‐María Ramírez‐Zamora   +4 more
wiley   +1 more source

Mineralogical Characteristics and Fluorescent Properties of Yellow and Pink Calcite

Crystals
Yellow and pink calcite samples from the Huanggangliang and Xilingol mining areas in Inner Mongolia were investigated to elucidate the relationships among chemical composition, unit-cell parameters, coloration, and luminescence.
Qiuli Yan, Wenkai Liang, Qingfeng Guo
doaj   +1 more source

Mineralogical Characteristics and Isothermal Oxidation Kinetics of Ironsand Pellets

Metals, 2019
An in-depth understanding of mineralogical characteristics and the oxidation behaviors of ironsand is of great significance to make the best of ironsand and develop Ti-containing pellets.
Yaozu Wang, Jianliang Zhang, Zhengjian Liu   +2 more
doaj   +1 more source