Results 51 to 60 of about 320,240 (352)
Scientific ReportsFine grinding using a stirred ball mill can enhance ore liberation but incurs high energy consumption, which can be minimized by optimizing operating conditions.
Abdalla M. Elbendari, Suzan S. Ibrahim
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UPGRADING AND SURFACE COATING OF EGYPTIAN WHITE SAND WITH POLYMERS AND SILANES
Rudarsko-geološko-naftni ZbornikEgypt is endowed with huge reserves of filler minerals, such as silica sand which form approximately 95% of the Earth's crust. The silica sand industry is used in many fields, such as pharmaceutical practices, chemicals, glass, ceramics, electronics, and
Khaled E. Yassin +6 more
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Geofluids, 2018 Fractures are ubiquitous in geological formations and have a substantial influence on water seepage flow in unsaturated fractured rocks. While the matrix permeability is small enough to be ignored during the partially saturated flow process, water ...
Zuyang Ye +6 more
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ISPRS International Journal of Geo-Information, 2019 Strokes are considered an elementary unit of road networks and have been widely used in their analysis and application. However, most conventional stroke generation methods are based solely on a fixed angle threshold, which ignores road networks’ ...
Yi Liu, Wenjing Li
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How Close Is Close? The Spatial Reach of Agglomeration Economies
Journal of Economic Perspectives, 2020 This paper considers the attenuation of agglomeration economies. Put another way: how close is close? The paper presents evidence of agglomeration effects operating at various levels of spatial aggregation, including the regional, metropolitan, and ...
S. Rosenthal, W. Strange
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Agglomeration in Europe in the context of socio-ecological transition [PDF]
, 2012 This paper analyses the spatial distribution of economic activity in the European Union at NUTS2 level over the 2001-2010 period. The aim of the study is twofold: (i) to provide descriptive evidence of the agglomeration distribution in Europe and its ...
Styczynska, Izabela +2 more
core
Advanced Engineering Materials, EarlyView.This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser +3 more
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Scientific ReportsTantalum (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
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Measuring Agglomeration of Agglomerated Particles Pictures
CoRR, 2013 In this article, we introduce a novel geometrical index $δ_{agg}$, which is associated with the Euler number and is obtained by an image processing procedure for a given digital picture of aggregated particles such that $δ_{agg}$ exhibits the degree of the agglomerations of the particles.
Shigeki Matsutani, Yoshiyuki Shimosako
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Advanced Engineering Materials, EarlyView.This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji +3 more
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