Results 121 to 130 of about 218,762 (405)

Development of Graphene Oxide@Hyperbranched Polyglycerol Nanofluids for Application in Enhanced Oil Recovery

Journal of Applied Polymer Science, EarlyView.
Schematic representation of graphene oxide (GO) nanofluid functionalization with surfactants or hyperbranched polyglycerol (HPG) for enhanced oil recovery (EOR). The diagram highlights: (1) wettability alteration in limestone and sandstone reservoirs; (2) nanofluid injection into porous media; (3) atomic force microscopy (AFM) characterization of oil ...
Kelly C. B. Maia, Agatha Densy dos S. Francisco, Arley Sena do Nascimento, Giulia C. da Cruz, Felipe A. M. M. Macedo, Cesar Raitz, Daniel Grasseschi   +6 more
wiley   +1 more source

Flotation Separation of Cassiterite from Calcite Using Low-Molecular-Weight Citrus Pectin as Depressant

Separations
This paper presents the development of an environmentally friendly, small molecular depressant citrus pectin for improving the recovery of cassiterite resources. Citrus pectin extracted from citrus peel was utilized as the depressant, and it demonstrated
Chenyang Yao, Yachao Li, Peng Li, Xiaokui Che, Guosheng Li, Fanfan Zhang, Weijun Peng, Bozeng Wu, Guixia Fan   +8 more
doaj   +1 more source

Direct Experimental Evidence for Differing Reactivity Alterations of Minerals following Irradiation: The Case of Calcite and Quartz [PDF]

, 2015
Concrete, a mixture formed by mixing cement, water, and fine and coarse mineral aggregates is used in the construction of nuclear power plants (NPPs), e.g., to construct the reactor cavity concrete that encases the reactor pressure vessel, etc.
Bauchy, Mathieu, Field, Kevin G., Kumar, Aditya, Pape, Yann Le, Pignatelli, Isabella, Sant, Gaurav, Wang, Bu, Yu, Yingtian   +7 more
core   +3 more sources

Silesaurid (Archosauria: Dinosauriformes) remains from the base of the Dockum Group (Late Triassic: Otischalkian) of Texas provide new insights to the North American record of dinosauriforms

The Anatomical Record, EarlyView.
Abstract Silesaurids (Archosauria: Dinosauriformes) are found in Middle to Upper Triassic deposits across Pangea, but few stratigraphic sections record the evolution of the group in one geographic area over millions of years. Here, we describe silesaurid remains from the oldest of the Upper Triassic stratigraphic sequence from the base of the Dockum ...
Frederick B. Tolchard, Brynden W. Perkins, Sterling J. Nesbitt   +2 more
wiley   +1 more source

Analytical electron microscopy of biogenic and inorganic carbonates [PDF]

In the terrestrial sedimentary environment, the mineralogically predominant carbonates are calcite-type minerals (rhombohedral carbonates) and aragonite-type minerals (orthorhombic carbonates).
Blake, David F.
core   +1 more source

Histovariability and fossil diagenesis of Pissarrachampsa (Pseudosuchia, Notosuchia, Baurusuchidae) from the Upper Cretaceous of Southeast Brazil

The Anatomical Record, EarlyView.
Abstract Notosuchians were key components of western Gondwanan Cretaceous ecosystems in terrestrial predator niches and exhibited remarkable taxonomic and ecological diversity. Previous research has explored their physiology, metabolism, and histology, revealing varied growth patterns and life history strategies.
Tito Aureliano, Virgínia Maciel, Pedro Victor Buck, Felipe C. Montefeltro, Thiago da S. Marinho, Aline M. Ghilardi   +5 more
wiley   +1 more source

Effect of the tryptone concentration on the calcium carbonate biomineralization mediated by Bacillus cereus

Dyna, 2018
Five tryptone concentrations (0.2%, 0.4%, 0.6%, 0.8% and 1.0%) were evaluated on calcium carbonate biomineralization processes, using 0.5% of calcium acetate.
Gerardo Andrés Caicedo-Pineda, María Consuelo Prada-Fonseca, Ana Elisa Casas-Botero, Hader Vladimir Martínez Tejada   +3 more
doaj   +1 more source

Influence of cell cycle phase on calcification in the coccolithophore Emiliania huxleyi [PDF]

, 2008
Calcification of the cosmopolitan coccolithophore species Emiliania huxleyi was investigated in relation to the cell division cycle with the use of batch cultures.
Antia, Avan, LaRoche, Julie, Müller, Marius   +2 more
core   +1 more source

Experimental diagenesis: insights into aragonite to calcite transformation of Arctica islandica shells by hydrothermal treatment

, 2016
. Biomineralised hard parts form the most important physical fossil record of past environmental conditions. However, living organisms are not in thermodynamic equilibrium with their environment and create local chemical compartments within their bodies ...
L. Casella, E. Griesshaber, Xiaofei Yin, A. Ziegler, V. Mavromatis, D. Müller, Ann-Christine Ritter, D. Hippler, E. Harper, M. Dietzel, A. Immenhauser, B. Schöne, L. Angiolini, W. Schmahl   +13 more
semanticscholar   +1 more source

Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic

The Anatomical Record, EarlyView.
Abstract Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and
Julia Lara Rodrigues de Souza, João Lucas Da Silva, Voltaire D. P. Neto, Arielli Fabrício Machado, Juan A. Escobar, Felipe L. Pinheiro   +5 more
wiley   +1 more source