Results 71 to 80 of about 28,621 (307)

Mechanisms of failure of jointed rock masses and the behaviour of steep slopes [PDF]

open access: yes, 1998
The geomorphological behaviour of steep jointed rock slopes has been studied using distinct element method computer models. In order to model steep slopes effectively, methodologies need to be combined from the studies of environmental modellers ...
Kimber, Owen Graham
core  

Cteno‐Bot: An Untethered Metachronally Swimming Robot With Magnetoactive Propulsors

open access: yesAdvanced Intelligent Systems, EarlyView.
We present Cteno‐bot, an untethered ctenophore‐inspired robot which swims using metachronally coordinated appendages. A single mechanism controls up to 216 magnetoactive propulsors via a dynamically varying magnetic field. We show that the swimming speed of the robot can be increased without a corresponding increase in power requirement, simply by ...
David J. Peterman, Margaret L. Byron
wiley   +1 more source

Potential of mechanochemically activated sulfidic mining waste rock for alkali activation

open access: yes, 2021
Sulfidic mining waste rock is a side stream from the mining industry with a potential environmental burden. Alkali activation is a promising method for transforming mining waste into construction materials.
Perumal, P. (Priyadharshini)   +7 more
core  

Accounting for animal health in efficiency analysis: An application to Swedish dairy farms

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Poor animal health is a central concern in modern livestock production. Despite the necessity to incorporate animal health in efficiency analysis, the theoretical and empirical developments are limited on this subject. This article appropriately characterizes the axiomatic properties of animal health within a production framework.
Frederic Ang   +3 more
wiley   +1 more source

Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model

open access: yesScience and Technology of Nuclear Installations, 2018
In the deep geological repository of nuclear waste, the corrosion of waste generates gas, which increases the storage pressure, changes the properties of the rock strata, and affects the stability of nuclear waste repository.
Yi Xue   +4 more
doaj   +1 more source

Diavik waste rock project : characterization of particle size, sulfur content and acid generating potential

open access: yes, 2011
The heterogeneous distribution of physical and geochemical characteristics of waste rock has a major influence on the acid generating potential of the rock.
Stastna, Marek   +6 more
core  

Diavik Waste Rock Project: Geochemical and mineralogical investigations of waste-rock weathering [PDF]

open access: yes, 2012
The oxidation of sulfide minerals in mine waste rock has the potential to generate acidity and contribute sulfate, metals and other trace constituents to drainage.
Hannam, Stacey
core  

Designing waste rock barriers by advanced numerical modelling

open access: yes, 2019
Design of waste rock barriers forming safety berms for haul trucks requires knowledge of complex interactions which cannot readily be tested by physical means.
Sloan, Scott   +7 more
core   +1 more source

Optimized Selenium‐Doped Nanocomposites for Enhanced Polymer Gel Performance in Permeability Reduction

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Excessive water production in mature oil fields necessitates robust shut‐off treatments, yet conventional polymer gels often fail under high‐temperature and high‐salinity conditions. This study aims to enhance gel thermal stability and mechanical strength by incorporating selenium‐doped Ag/AgO–ZnO nanocomposites synthesized via a novel green ...
Fadhil F. Sead   +8 more
wiley   +1 more source

Integrating microbiology into the Drigg Post-closure radiological safety assessment

open access: yes, 2001
BNFL owns and operates the UK.s principal solid Low Level Radioactive Waste disposal site at Drigg in Cumbria, north west England. Drigg has been receiving waste since 1959 with approximately 900,000 m3 of waste disposed of to date.
Small, J.   +3 more
core  

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