Results 71 to 80 of about 445,163 (226)
Archaeometry, EarlyView.ABSTRACT This paper reports elemental analysis results of 51 glass beads from Peki, an inland transatlantic trade node in southeastern Ghana. Using laser ablation–inductively coupled plasma–mass spectrometry (LA‐ICP‐MS), 91 compositional measurements were obtained, identifying three principal glass types: high‐soda, high‐lead, and potash‐lime glasses ...
Benjamin Kofi Nutor, Laure Dussubieux
wiley +1 more source
Modeling and Mitigating Gas Hazards during Potash Mine Closure
MiningThe planned closure of potash mines achieved through the injection of highly mineralized brines into the worked-out area is a complex process. A critical concern arises when brines obstruct the aerodynamic connections between the flooded mine’s airspace ...
Evgenii Kolesov +3 more
doaj +1 more source
Горные науки и технологии, 2019 Currently, an adverse environmental factor in the Soligorsk mining district is the effect of underground mining on the terrain and landscape. The remarkable thing is that flooding and waterlogging in the undermined territory of the potash mine fields is ...
N. A. Vysotskaya, E. V. Piskun
doaj +1 more source
Ecological Entomology, EarlyView.There was a positive relationship between adult preference and larval performance. However, the strength of the relationship ranged from weak to strong depending on the measure of adult preference. The adult beetle showed substantial flexibility in host plant selection and equal performance across most thistle hosts.
Michael G. Cripps +6 more
wiley +1 more source
Записки Горного института, 2019 Statistical data on the reliability of self-propelled mine cars (SPMC), operating in the potassium mines of the Verkhnekamskoye potassium and magnesium salts deposit are analyzed. Identified the main nodes that limit the resource SPMC. It has been proven
D. I. Shishlyannikov +2 more
doaj +1 more source
Potash: Impact assessment for supply security [PDF]
, 2022 EU’s import dependency for potash is increasing since 2018. Total EU imports of all forms of potash peaked in 2020, of which more than half were sourced from Russia and Belarus. Russia and Belarus are crucial for the global potash supply. Together they
D'ELIA Eleonora +1 more
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Success and failure in England's patent system: New evidence from patent applications, 1783–1834
The Economic History Review, EarlyView.Abstract Our understanding of the relationship between the English patent system and technical change during the industrial revolution is based entirely on the study of successful patents. We address this feature by providing the first study of unsuccessful patent applications in England during the first industrial revolution.
Stephen D. Billington, Joe Lane
wiley +1 more source
On flood protection measures for potash mines
Journal of Mining Institute, 2019 Development of water-soluble ore deposits is associated with the necessity to preserve water blocking strata (WBS), which separate aquifers from the mine gob. One indicator of the rate of man-induced load on WBS layers is subsidence of the earth surface, which defines the character of shift trough formation of the earth surface.
A. A. Baryakh, E. A. Gubanova
openaire +3 more sources
Ground penetrating radar investigations in Upper Kama potash mines [PDF]
, 2010 An understanding of the structure and state of the rock mass surrounding underground openings in the potash mines is critically important for safe mining, planning the methods of extraction of an orebody, and preventing the influx of ground water ...
Kovin, Oleg N.
core
European Financial Management, EarlyView.ABSTRACT Using the staggered adoption of the Inevitable Disclosure Doctrine (IDD) across U.S. states, this study examines whether legal protection of trade secrets granted to a firm's rivals affects the firm's trade credit when it is not similarly protected.
Yi Shi, Haiyan Jiang
wiley +1 more source