Results 11 to 20 of about 176,284 (364)

Telling tails [PDF]

open access: yesProceedings of the National Academy of Sciences, 2001
The N-methyl-d-aspartate (NMDA)-type glutamate receptor is one of three major classes of receptors for glutamate, the principle excitatory neurotransmitter in the central nervous system. It plays a key role in learning and in the formation of memories by acting as a “coincidence detector” that initiates changes in synaptic strength that lead to the ...
Kennedy, Mary B., Manzerra, Pat
openaire   +3 more sources

Fixed-Time Leader-Following Flocking for Nonlinear Second-Order Multi-Agent Systems

open access: yesIEEE Access, 2020
This work focuses on the fixed-time leader-following flocking for multi-agent systems. Different from the previous continuous inherent dynamic f(xi,vi,t) for agent i, a new nonlinear discontinuous one is firstly proposed in this paper.
Zhenghua Xu, Hongliang Liu, Yong Liu
doaj   +1 more source

Study on the Solution of Sand Slabbing in the Tailing Sand Bin of Huanggang Iron Ore Mine

open access: yesAdvances in Civil Engineering, 2022
In order to improve the tailings utilization rate and realize full tailings’ filling in Huanggang iron mine in Inner Mongolia, a flocculation settlement system was added, which resulted in silting and consolidation of tailings in sand silts.
Xin Zhu   +6 more
doaj   +1 more source

Regional Distribution and Causes of Global Mine Tailings Dam Failures

open access: yesMetals, 2022
Tailings ponds are one of the three major production facilities in metal mines. The volume of tailings increases year by year, but the storage capacity of existing tailings ponds is limited.
Shui-Quan Lin   +6 more
doaj   +1 more source

Jarosite versus Soluble Iron-Sulfate Formation and Their Role in Acid Mine Drainage Formation at the Pan de Azúcar Mine Tailings (Zn-Pb-Ag), NW Argentina [PDF]

open access: yes, 2014
Secondary jarosite and water-soluble iron-sulfate minerals control the composition of acid mine waters formed by the oxidation of sulfide in tailings impoundments at the (Zn-Pb-Ag) Pan de Azúcar mine located in the Pozuelos Lagoon Basin (semi-arid ...
Alicia Kirschbaum   +5 more
core   +3 more sources

Potential Impacts of Tailings and Tailings Cover Fertilization on Arsenic Mobility in Surface and Ground Waters [PDF]

open access: yes, 2008
A number of mining sites worldwide, particularly gold mines, have tailings management facilities (TMFs) that contain high levels of arsenic. Current closed mine site regulatory agencies tend to prefer revegetation of TMFs as part of the mandated ...
Kaya Forest, Sierra Rayne
core   +2 more sources

Experimental Study on Permeability Coefficient in Layered Fine Tailings under Seepage Condition

open access: yesGeofluids, 2021
Nearly half of the tailings dams in China are in a state of high-security risks and overservice, and the safety of these tailings dams has always been a concern for relevant scholars.
Tao Dong   +4 more
doaj   +1 more source

The Effects of Internal Erosion on the Physical and Mechanical Properties of Tailings under Heavy Rainfall Infiltration

open access: yesApplied Sciences, 2021
The stability of tailings dam will be affected by the internal erosion under unsteady seepage caused by heavy rainfall infiltration which changes the physical and mechanical properties of tailings.
Rong Gui, Guicheng He
doaj   +1 more source

An adaptive neuro fuzzy inference system to model the uniaxial compressive strength of cemented hydraulic backfill [PDF]

open access: yes, 2018
Purpose. The purpose of this paper is to develop the models for predicting the uniaxial compressive strength (UCS) of cemented hydraulic backfill (CHB), a widely used technique for filling underground voids created by mining operations as it provides ...
Basarir, H   +4 more
core   +1 more source

Experimental Characterization of the Seismic Responses of Silt-Interlayered Stratified Sandy Tailings Slopes Using Centrifuge Shaking Table Tests

open access: yesAdvances in Materials Science and Engineering, 2022
This study aims to characterize the seismic responses of silt-interlayered stratified sandy tailings slopes. In order to achieve this, a series of model tests were carried out in an advanced centrifuge shaking table.
Zitao Zhang, Jing Hu, Xuedong Zhang
doaj   +1 more source

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