Results 101 to 110 of about 299,164 (314)

Changes in dissolved iron deposition to the oceans driven by human activity: a 3-D global modelling study [PDF]

open access: yes, 2015
The global atmospheric iron (Fe) cycle is parameterized in the global 3-D chemical transport model TM4-ECPL to simulate the proton- and the organic ligand-promoted mineral-Fe dissolution as well as the aqueous-phase photochemical reactions between the ...
Baker, Alex   +5 more
core   +2 more sources

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

open access: yesAdvanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang   +5 more
wiley   +1 more source

Education in mineral processing and filling the gap of talented mineral processing engineers

open access: yesProceedings of XVI International Mineral Processing and Recycling Conference - zbornik radova
Mining countries such as Australia and the US have recognized the lack of mineral processing engineers as the demand for mineral resources increases for energy transition and climate change mitigation. However, this need is also due to the complexity of extraction, refining, quality control, environmental impact, supply chain and regulatory ...
openaire   +1 more source

Interrelationship of hydrology, microbial colonisation and hydrometallurgy in a simulated chalcopyrite heap leach [PDF]

open access: yes, 2008
Includes bibliographical references (leaves 104-115).Chalcopyrite is the most abundant primary copper sulphide mineral found worldwide. As copper grades of ores available for extraction decrease, heap bioleaching is gaining interest as a potential ...
Spurr, Nicholas Robert Louis
core  

Application features of the surface laser scanning technology when solving the main tasks of surveying support for reclamation [PDF]

open access: yes, 2019
Purpose. Study of the effectiveness of topographical survey methods when solving the main tasks of surveying support for the disturbed lands reclamation. Methods. Comparative analysis of the topographical survey results, which was conducted with the use
Bakhmagambetova, G   +6 more
core   +1 more source

Charge Transport in Ternary Charge‐Transfer Solid Solution Single Crystals

open access: yesAdvanced Functional Materials, EarlyView.
This study deconvolutes the roles of indirect (superexchange) and direct electronic coupling on charge transport in single crystals of an organic charge‐transfer molecular semiconductor (OSC). This model system elegantly demonstrates that structural defects introduced by chemical dopants play a significant role in the electronic performance ...
Jonathan C. Novak   +7 more
wiley   +1 more source

Kinetics and Thermodynamics Study of Ammonia Leaching on Spent LMR-NMC Battery Cathodes

open access: yesIndonesian Journal of Chemistry
The recycling of spent lithium NMC-type batteries, widely used in electric vehicles, presents a challenge due to manganese content, which complicates metal separation and purification.
Indra Perdana   +4 more
doaj   +1 more source

Three-dimensional electromagnetic field model of an auger electromechanical converter with an external solid rotor [PDF]

open access: yes, 2019
Purpose. Creating a three-dimensional mathematical model of the electromagnetic field of an auger electromechanical converter with the external solid rotor, taking into account the geometry peculiarities and the finite length factor.
Brozhko, R   +3 more
core   +1 more source

Block Copolymers: Emerging Building Blocks for Additive Manufacturing

open access: yesAdvanced Functional Materials, EarlyView.
This review addresses how block copolymer (BCP) physics and rheology have led to the widespread use of BCPs in advanced additive manufacturing techniques, with particular emphasis on the untapped potential of these nanostructured materials toward achieving multi‐scale architected materials with unique, programmable material properties.
Alice S. Fergerson   +3 more
wiley   +1 more source

Flotation of hard coal in saline water

open access: yesE3S Web of Conferences, 2016
With the use of saline process water, the ash content in the concentrate was 6% and in the tailings 70%. Of course the upgrading plants which apply flotation for coal slurries still use mine water in technological processes.
Mlynarczykowska Anna   +2 more
doaj   +1 more source

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