Results 61 to 70 of about 1,753 (302)

Experimental Study and CFD Modelling of Minimum Fluidization Velocity for Geldart A, B and D Particles [PDF]

, 2017
The aim of this study is to determine minimum fluidization velocity of three different particles which represent different Geldart classification groups and to compare the results with computational results.
Bovinda S. Ahangama, Ahangama, Bovinda S, Tokheim, Lars-André, Chameera K. Jayarathna, Amarasinghe, Widuramina Sameendranath, null null, Lars-Andre Tokheim, Britt M. E. Moldestad, Jayarathna, Chameera K., Moldestad, Britt Margrethe Emilie, Widuramina S. Amarasinghe   +10 more
core   +1 more source

Fluidization of fine coal particles in an ultrasound enhanced gas-solid fluidized bed

South African Journal of Chemical Engineering
Coal continues to be one of the most important primary energy sources and is a major contributor to economic growth, especially in the developing world. Coal fines are an unavoidable by-product of coal extraction. Fine coal is classified as waste when it
Sayuri Naicker, Neeraj Kuarsingh, Milan Carsky, David Lokhat   +3 more
doaj   +1 more source

Hydrodynamic Study of a Circulating Fluidized Bed at High Temperatures: Application to Biomass Gasification

KONA Powder and Particle Journal, 2018
Experimental data on the hydrodynamic behavior of dense and circulating fluidized beds at high temperatures are scarce in the literature. This work deals with the hydrodynamic study of a Fast Internally Circulating Fluidized Bed (FICFB) used for biomass ...
Sébastien Pecate, Mathieu Morin, Sid Ahmed Kessas, Mehrdji Hemati, Yilmaz Kara, Sylvie Valin   +5 more
doaj   +1 more source

Experimental Study on Sugarcane Bagasse Pyrolysis in a Hermochemical Processes Pilot Plant

Chemical Engineering Transactions, 2020
This paper investigates the sugarcane bagasse pyrolysis for bio-oil and biochar production in a pilot plant that was designed to perform the gasification process.
Nahieh Toscano Miranda, Lucas Maciel Dianin, Daniel Santos Fernandes, Rubens Maciel Filho, Maria Regina Wolf Maciel   +4 more
doaj   +1 more source

White Matter Hyperintensity Burden and Short‐Interval Change Associated With Sleep Apnoea in the UK Biobank

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Purpose White matter hyperintensities (WMH) are a core neuroimaging marker of cerebral small vessel disease (CSVD). Sleep apnoea (SA) is a recognized vascular risk factor, but its associations with regional WMH burden, short‐interval WMH change and cognitive performance in population‐based cohorts remain incompletely defined. We
Peng Cheng, Diego Z. Carvalho, Shahid Karim, Anwar Chahal, Virend K. Somers   +4 more
wiley   +1 more source

Study on structure optimization and applicability of hydrocyclone in natural gas hydrate exploitation

Frontiers in Earth Science, 2022
With the development of economy and industry, the consumption of fossil energy is gradually increasing. Currently, natural gas hydrates (NGH) are considered to be an ideal alternative energy due to its large reserve and high energy density.
Na Wei, Na Wei, Yi Qiao, Yi Qiao, Anqi Liu, Jinzhou Zhao, Jinzhou Zhao, Liehui Zhang, Liehui Zhang, Jin Xue, Jin Xue   +10 more
doaj   +1 more source

Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi, Sola Al Ghazal, Salem Hannoun, Medhat A. Siddik, Nour M. Najjar, Jim Dagher, Joseph Abboud, Myriam G. Semaan, Samia J. Khoury   +8 more
wiley   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Particle-fluid dynamics and solid ejection in fluidized beds [PDF]

, 2008
Los flujos multifásicos son, en general, difíciles de modelar. En concreto, los lechos fluidizados burbujeantes son incluso más complejos debido a la presencia de burbujas (aparte de las partículas y de la corriente principal del gas) que aparecen cuando
Almendros Ibáñez, José Antonio
core  

Investigation into the Water Jet Erosion Efficiency of Hydrate-Bearing Sediments Based on the Arbitrary Lagrangian-Eulerian Method

Applied Sciences, 2019
As an innovative way to exploit marine natural gas hydrates (NGH), the solid fluidization exploitation method is to erode hydrate-bearing sediment (HBS) into fine particles by a water jet and transport the particles to an offshore platform.
Chen Chen, Dongbin Pan, Lin Yang, Han Zhang, Bing Li, Chengcai Jin, Xitong Li, Yong Cheng, Xiuping Zhong   +8 more
doaj   +1 more source