Results 61 to 70 of about 734 (136)

Comparison of Nigerian Barite Production with some Top Barite Producing Countries

FUOYE Journal of Engineering and Technology, 2019
Barite is a very important industrial minerals used as weighting material in the petroleum industry. The nature of barite ores, geology of barite ores based on location were discussed. This paper presents top barite producing countries in the world, their production and consumption of barite, as well as their reserve. Despite all the barite deposits in
Shola K Kolawole, Chioma I Madueke, Oluwamayowa M Olugbemi, Funsho O Kolawole   +3 more
openaire   +1 more source

Low Chemical Weathering Intensity, Enhanced Erosion, and Euxinic Conditions Along the Norwegian Margin During the Paleocene‐Eocene Thermal Maximum

Paleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.
Abstract The Paleocene–Eocene Thermal Maximum (PETM; ∼55.9 Ma) was a rapid global warming event marked by intensified hydrological cycling, enhanced continental weathering, and widespread ocean deoxygenation. Although the extent of anoxic basins during the PETM is relatively well documented, the contribution of high‐latitude continental weathering to ...
Anjana Gireesh Sandhya, Jack Longman, Torben Struve, Morgan T. Jones, Joost Frieling, Katharina Pahnke   +5 more
wiley   +1 more source

Patologías de los sistemas de clasificación

Informatio, 1995
El autor establece una tipología de situaciones anómalas detectables en los sistemas de clasificación e indización y las sistematiza. En cada caso ofrece: una definición, la caracterización de la patología de que se trata acompañada de ejemplos (tomados,
Mario Barité
doaj  

Organización del conocimiento y arquitectura de la información: tendencias y tensiones

Revista Ibero-Americana de Ciência da Informação, 2011
Las nociones de “conocimiento” e “información” siguen siendo tan polisémicas y de naturaleza tan abierta, que cada vez que se refiere a ellas, debería hacerse explícita la significación particular que adquieren en un contexto determinado.
Mario Barité
doaj  

Fluid evolution and mineralogy of Mn-Fe-barite-fluorite mineralizations at the contact of the Thuringian Basin, Thüringer Wald and Thüringer Schiefergebirge in Germany

Geologica Carpathica, 2016
Numerous small deposits and occurrences of Mn-Fe-fluorite-barite mineralization have developed at the contact of the Thuringian Basin, Thüringer Wald and Thüringer Schiefergebirge in central Germany.
Majzlan Juraj, Brey-Funke Maria, Malz Alexander, Donndorf Stefan, Milovský Rastislav   +4 more
doaj   +1 more source

Modern approaches to barium ore benefication

Записки Горного института
Barite is one of the critically important minerals in several industries, including the fuel and energy, nuclear, and medical sectors. For decades, its extraction did not require any complex techniques; however, with the depletion of rich barite-bearing ...
Nataliya V. Yurkevich, Tatyana V. Grosheva, Aleksei V. Edelev, Vadim N. Gureev, Nikolai A. Mazov   +4 more
doaj  

Effects of Metal Ions on the Flotation of Fluorite and Barite: An Experimental and Mechanistic Investigation

Separations
Fluorite (CaF2) and barite (BaSO4) commonly occur together in the same deposits. Due to their similar surface chemical properties, their flotation separation is often challenging.
Ying Wei, Yuqiong Li, Yingchao Liu, Yuxin Guo, Caiyun Li, Wanglin Yang   +5 more
doaj   +1 more source

Mechanism and Performance of Bioenzyme-Enhanced DTPA Chelator in Removing Barite Plugging

Zuanjingye yu wanjingye
When drilling low-temperature geothermal wells into high-pressure formations, the barite (BaSO4) in weighted drilling fluids, under the action of differential pressure, invade formation fractures and form insoluble filter cakes to block flow channels ...
Wenshi WANG, Hu WANG, Ni REN, Jie WANG, Jun CAI, Jihua CAI   +5 more
doaj   +1 more source

Application and mechanistic insights of a washing/microwave/ultrasonic ternary pretreatment for enhancing barite flotation in waste drilling fluids

Scientific Reports
A quantity of recoverable barite exists in high-density waste drilling fluid. Based on the inefficiencies and complexities of existing recycling methods, a novel pre-treatment approach which includes clean-breaking, high-speed washing, ultrasonic ...
Yu Xia, Hui Mao, Shanfa Tang, Shuixiang Xie, Hongbo Liu, Wen Ren, Mingdong Zhang   +6 more
doaj   +1 more source

Diagenetic Barite Growths in the Mixing Zone of a Carbonate Coastal Aquifer

Journal of Marine Science and Engineering
Mixing zones in carbonate coastal aquifers are dynamic interfaces where freshwater and seawater converge, triggering complex biogeochemical processes.
Fernando Sola, Malva Mancuso, Ángela Vallejos   +2 more
doaj   +1 more source