Results 61 to 70 of about 1,237,224 (236)

Physically based 3D finite element model of a single mineralized collagen microfibril [PDF]

open access: yesJournal of Theoretical Biology 301 (2012) 28-41, 2012
Mineralized collagen microfibrils in human bone provide its mechanical properties (stiffness, elasticity, ductility, energy dissipation and strength). However, detailed 3D finite element models describing the mechanical behaviour of the mineralized collagen microfibrils are still lacking.
arxiv   +1 more source

Afghanistan : revival and redevelopment [PDF]

open access: yes, 2008
Major redevelopment projects in Afghanistan are placing large demands on the minerals industry, which is struggling to keep pace.
Benham, Antony, Mitchell, Clive
core  

Characterizing relationships between primary miners in Ethereum by analyzing on-chain transactions [PDF]

open access: yesarXiv, 2020
It is widely accepted that Ethereum mining is highly centralized. Nonetheless, centralization has been mostly characterized by exclusively looking at the influence that independent miners or mining pools can have over the network. Moreover, models of mining behavior assume that miners are either unrelated or only relate via mining pools under highly ...
arxiv  

Produced Water Treatment Using Ultrafiltration and Nanofiltration Membranes

open access: yesAl-Khawarizmi Engineering Journal, 2016
The application of ultrafiltration (UF) and nanofiltration (NF) processes in the handling of raw produced water have been investigated in the present study.
Bashir Y. Sherhan   +8 more
doaj  

Enhanced tantalum and niobium recovery from fine-grained low-grade Abu Dabbab ore using Falcon concentration and magnetic separation

open access: yesScientific Reports
Tantalum (Ta) and niobium (Nb) possess unique properties that make them invaluable across various industries. However, their similar chemical characteristics and natural co-occurrence challenge their separation.
El-Sayed R. E. Hassan   +3 more
doaj   +1 more source

Lithofacies Architecturing and Hydrocarbon Reservoir Potential of Lumshiwal Formation: Surghar Range, Trans-Indus Ranges, North Pakistan [PDF]

open access: yesInternational Journal of Economic and Environment Geology, 2015
Western environs of the Indo-Pak Plate are comprised of thick Mesozoic sedimentary sequence and extensively extended toward Trans-Indus Salt ranges of North Pakistan.
Iftikhar Alam   +2 more
doaj  

The social and environmental complexities of extracting energy transition metals

open access: yesNature Communications, 2020
As low-carbon energy technologies advance, markets are driving demand for energy transition metals, increasing the stress placed on people and the environment in extractive locations.
Éléonore Lèbre   +7 more
doaj   +1 more source

Reductive roasting of iron-rich manganese oxide ore with elemental sulfur for selective manganese extraction [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2017
It is very important to selectively reduce manganese oxide over iron oxide for extraction of Mn from iron-rich manganese ore. In this study, reductive roasting of an iron-rich manganese oxide ore with elemental sulfur as reductant was ...
You Z.   +5 more
doaj   +1 more source

Mineralogical characterisation and processing of some industrial minerals from Uganda [PDF]

open access: yes, 1992
This report describes the mineralogical characterisation and processing of several industrial minerals collected by Dr DJ Morgan in October 1991 during a visit to Uganda (Visit report WG/91/31R).
Mitchell, C.J.
core  

How large are departures from lithostatic pressure? Constraints from host-inclusion elasticity [PDF]

open access: yes, 2015
Minerals trapped as inclusions within other host minerals will develop non-lithostatic pressures during both prograde and retrograde metamorphism because of the differences between the thermo-elastic properties of the host and inclusion phases.
Adams   +39 more
core   +1 more source

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