Results 191 to 200 of about 17,122 (265)
Barite formation in the ocean: Origin of amorphous and crystalline precipitates
Chemical Geology, 2019 Ocean export production is a key constituent in the global carbon cycle impacting climate. Past ocean export production is commonly estimated by means of barite and Barium proxies.
Francisca Martinez-Ruiz +2 more
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, 2020
There are many factors affecting the filtration of drilling fluid into the drilled formation. The adverse impact of the filtration on the well productivity calls for concerted research effort towards developing promising solutions to minimize the volume ...
B. Bageri +3 more
semanticscholar +1 more source
There are many factors affecting the filtration of drilling fluid into the drilled formation. The adverse impact of the filtration on the well productivity calls for concerted research effort towards developing promising solutions to minimize the volume ...
B. Bageri +3 more
semanticscholar +1 more source
Insulating epoxy/barite and polyester/barite composites for radiation attenuation
Applied Radiation and Isotopes, 2013A trial has been made to create insulating Epoxy/Barite (EP/Brt) (ρ=2.85 g cm(-3)) and Crosslinked Unsaturated Polyester/Barite (CUP/Brt) (ρ=3.25 g cm(-3)) composites with radiation attenuation and shielding capabilities. Experimental work regarding mechanical and physical properties was performed to study the composites integrity for practical ...
M A, El-Sarraf, A, El-Sayed Abdo
openaire +2 more sources
, 2020
Minerals, for instance barite and hematite, absorb γ -rays better than silica aggregates because of their higher density. The use of these minerals as main component in ultra-high performance concretes (UHPCs) exhibit promising results and enhances the ...
N. Azreen +7 more
semanticscholar +1 more source
Minerals, for instance barite and hematite, absorb γ -rays better than silica aggregates because of their higher density. The use of these minerals as main component in ultra-high performance concretes (UHPCs) exhibit promising results and enhances the ...
N. Azreen +7 more
semanticscholar +1 more source
Simulation and optimization of gamma-ray linear attenuation coefficients of barite concrete shields
, 2020The remarkable increment in radioactivity risks of today’s industrial world is required to the efficient design of shielding structures. In the present study, the optimal design parameters of barite concrete shields for providing the highest gamma ...
A. Şensoy, H. Gökçe
semanticscholar +1 more source
Fluorite particles as a novel barite depressant in terms of surface transformation
, 2021The flotation separation of scheelite and barite is difficult because they have the same active sites. The surface transformation of semi-soluble minerals is inevitable in the flotation of salt minerals, but an effective flotation separation can be ...
Ruo-lin Wang +5 more
semanticscholar +1 more source
Enhancing shielding efficiency of ordinary and barite concrete in radiation shielding utilizations
Scientific ReportsConcrete has been widely utilized as a radiation shielding material due to its properties and structural integrity. This study aims to evaluate the efficiency of ordinary concrete versus barite concrete as radiation shielding materials, focusing on the ...
Nasuha Ahmad +5 more
semanticscholar +1 more source
The utilization of citric acid as a depressant for the flotation separation of barite from fluorite
, 2020To achieve the efficient flotation separation of barite from fluorite, citric acid (CA) was utilized as a depressant for fluorite in this study. Microflotation showed that both fluorite and barite had good floatability when using sodium oleate (NaOl) as ...
Cheng Liu +5 more
semanticscholar +1 more source
The anionic flotation of fluorite from barite using gelatinized starch as the depressant
, 2020As an important non-metallic mineral widely used in industry, fluorite is normally associate with barite in nature. Anionic flotation is the most efficient method to separate fluorite from barite in mineral processing while the critical point of ...
Siyuan Yang +5 more
semanticscholar +1 more source
2020
Reconstruction of ocean paleoproductivity and paleochemistry is paramount to understanding global biogeochemical cycles such as the carbon, oxygen and sulfur cycles and the responses of these cycles to changes in climate and tectonics. Paleo-reconstruction involves the application of various tracers that record seawater compositions, which in turn may ...
Weiqi Yao +2 more
openaire +1 more source
Reconstruction of ocean paleoproductivity and paleochemistry is paramount to understanding global biogeochemical cycles such as the carbon, oxygen and sulfur cycles and the responses of these cycles to changes in climate and tectonics. Paleo-reconstruction involves the application of various tracers that record seawater compositions, which in turn may ...
Weiqi Yao +2 more
openaire +1 more source