Results 31 to 40 of about 975 (166)

Development of the technology of stowing the developed space during mining

open access: yesЗаписки Горного института, 2022
An analysis of the world experience in the development of potash deposits shows that the main problems arising during their development are a high level of mineral losses, an increased risk of flooding of mine workings as a result of water-proof layer ...
Evgenii R. Kovalskii, Kirill V. Gromtsev
doaj   +1 more source

Rediscovering Sodium Ionophores as Selective Agents for Lithium Recognition and Extraction

open access: yesAngewandte Chemie, Volume 138, Issue 32, 3 August 2026.
Long‐classified sodium ionophores unexpectedly prefer lithium and act as efficient extractants in solid–liquid extraction (SLE). Readily prepared from catechol and haloacetamides, these hosts recover hydrated LiCl from multicomponent salt mixtures via a hydration‐assisted O···Li+ binding mode, enabling scalable lithium separation with Li/Na, Li/K, and ...
Jakub Narodowiec   +6 more
wiley   +2 more sources

Regional aspects and socio‑economic problems of potash mine design and construction

open access: yesSiberian Journal of Economic and Business Studies
Background. Currently, there are several socio-economic and technical trends in the global potash market. First, as the world's population grows, the demand for potash fertilizers increases.
Dmitry N. Shvaiba, Natalia P. Pazdnikova
doaj   +1 more source

The geology of Canadian potash: a critical mineral for feeding the world

open access: yesFACETS
Potash, potassium-bearing water-soluble salt, is the primary global economic source of potassium. Potash is recognized as a critical mineral in Canada as it is the largest source of potassium used in fertilizers.
E.J. Matheson   +7 more
doaj   +1 more source

On the Influence of Longwall Mining on the Deformation of the Operational Excavations

open access: yesМеханика машин, механизмов и материалов, 2023
The paper presents the results of numerical modeling of the geomechanical behavior of the system “lava — operational excavation — enclosing potash rock mass” during mining operations.
Andrey L. Polyakov   +3 more
doaj   +1 more source

Corporate ESG Greenwashing: Does Regulatory Proximity Matter?

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Environmental, social, and governance (ESG) greenwashing undermines sustainable development, yet the influence of regulatory proximity on oversight is understudied. By introducing the “distance decay effect” from geoeconomics into ESG misconduct research and using a sample of Chinese listed firms from 2009 to 2022, this study reveals a ...
Weiqi Zhao   +4 more
wiley   +1 more source

Determination of the friction factors in potash mines [PDF]

open access: yesJournal of Mining Science, 2014
Peer ...
Bascompta Massanes, Marc   +2 more
openaire   +3 more sources

Enhancement of the Plant‐Accessible Phosphate Fraction in Sewage Sludge Ashes by Na+ or K+ Addition Prior to Combustion

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
The addition of Na2CO3 or K2CO3 to sewage sludge prior to combustion leads to the production of ashes containing phosphate in the form of buchwaldite‐like phases (Ca(Na/K)PO4). Compared to conventional sewage sludge mono‐ashes, such Na‐ or K‐ashes show greatly increased P‐solubilities and proved to be potent P‐fertiliser materials in greenhouse ...
Lorenz Bier‐Schorr   +4 more
wiley   +1 more source

Comparative Analysis of Metal Preloading Technologies in Batteries and Capacitors

open access: yesEcoEnergy, EarlyView.
Metal preloading strategies play an important role in efficient batteries and hybrid capacitors to compensate for the consumed metals at the first discharge. This article reviews recent progress in preloading technologies in lithium‐ion and other metal‐ion systems.
Xuexue Pan   +3 more
wiley   +1 more source

Ecology of declining populations of gray foxes (Urocyon cinereoargenteus) in Indiana, USA Ecología de las poblaciones en declive de zorros grises (Urocyon cinereoargenteus) en Indiana, EE.UU.

open access: yesWildlife Monographs, EarlyView.
We estimated seasonal space use, cover selection, and resource selection; evaluated gene flow and potential genetic barriers; and assessed cause‐specific survival rates and reproduction of radiomarked gray foxes in Indiana, USA. Our results provide evidence that gray foxes in Indiana are an edge species with relatively large home ranges, relatively low
Tim L. Hiller   +5 more
wiley   +1 more source

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