Results 31 to 40 of about 454,936 (308)

Distribution of gold derived from hydrothermal fluids on the modern seafloor and its impact on the gold budget of seawater

Frontiers in Marine Science, 2023
The modern seafloor hydrothermal system plays a significant role in the cycling of energy and mass between the internal and external layers of the oceanic crust and upper mantle.
Wei Huang, Wei Huang, Jin Liang, Jingfang Lu, Fanghui Hou, Fanghui Hou, Panfeng Li, Ruyong Cui   +7 more
doaj   +1 more source

Inline Determination of Residence Time Distribution in Hot-Melt-Extrusion

Pharmaceutics, 2018
In the framework of Quality-by-Design (QbD), the inline determination of process parameters or quality attributes of a product using sufficient process analytical technology (PAT) is a center piece for the establishment of continuous processes as a ...
Jens Wesholowski, Andreas Berghaus, Markus Thommes   +2 more
doaj   +1 more source

Environmental isotopes (δ18O–δ2H, 222Rn) and electrical conductivity in backtracking sources of urban pipe water, monitoring the stability of water quality and estimating pipe water residence time

Frontiers in Water, 2023
This study demonstrates the use of environmental tracers (Water isotopes-δ18O–δ2H, Radon-222Rn, and Electrical Conductivity-EC) as complementary tools for backtracking the water source, estimating pipe water residence time, and monitoring the instability
Seifu Kebede, Kidist Hailu, Abdulhafiz Siraj, Behailu Birhanu   +3 more
doaj   +1 more source

An improved model of continuous leaching systems using segregation approach [PDF]

International Journal of Mining and Geo-Engineering, 2020
In this study, a simplified dissolution model has been developed to evaluate the performance of continuous leaching reactors. The model considers continuous reduction of the surface area of particles using the distribution of their size and residence ...
Abdolrahim Foroutan, Hojjat Naderi, Mohammad Reza Khalesi, Reza Dehghan   +3 more
doaj   +1 more source

Investigation of the Effects of Torrefaction Temperature and Residence Time on the Fuel Quality of Corncobs in a Fixed-Bed Reactor

Energies, 2022
Biomass from agriculture is a promising alternative fuel due to its carbon-neutral feature. However, raw biomass does not have properties required for its direct utilization for energy generation.
Joseph I. Orisaleye, Simeon O. Jekayinfa, Ralf Pecenka, Adebayo A. Ogundare, Michael O. Akinseloyin, Opeyemi L. Fadipe   +5 more
doaj   +1 more source

Reactant-Transport Engineering Approach to High-Power Direct Borohydride Fuel Cells

Cell Reports Physical Science, 2020
Summary: The development of high-power fuel cells could advance the electrification of the transportation sector, including marine and air transport. Liquid-fueled fuel cells are particularly attractive for such applications as they obviate the issue of ...
Zhongyang Wang, Shrihari Sankarasubramanian, Vijay Ramani   +2 more
doaj   +1 more source

Study of Mass Loss and Elemental Analysis of Pine Wood Pellets in a Small-Scale Reactor

Energies, 2022
Studying the thermal decomposition of wood pellets is an important subject in order to understand the behavior of wood pellets during the combustion process. In fact, wood pellets have become an important fuel used in boiler combustion.
Lelis Gonzaga Fraga, João Silva, José Carlos Teixeira, Manuel E. C. Ferreira, Senhorinha F. Teixeira, Cândida Vilarinho, Maria Margarida Gonçalves   +6 more
doaj   +1 more source

Residence time distribution measurements in an external-loop airlift reactor: Study of the hydrodynamics of the liquid circulation induced by the hydrogen bubbles [PDF]

, 2011
A detailed study of the residence time distribution (RTD) analysis of liquid phase has been performed in an external-loop airlift reactor of 20 L nominal volume, regarded as a global unit and discriminating its different sections (riser, gas–liquid ...
A.H. Essadki, Vial, Christophe, Gourich, Bouchaib, Ch. Vial, H. Delmas, Essadki, Abdel Hafid, Delmas, Henri, B. Gourich   +7 more
core   +1 more source

Impact of residence time distributions in reacting magnesium packed-beds on Grignard reagent formation – Pump-induced flow behaviour in non-reacting magnesium beds (part 1)

, 2023
Grignard reagent formation in continuously operated magnesium packed-bed reactors can be influenced by finetuning the residence time distribution within the magnesium packing.
Michael, Maskos, Dirk, Ziegenbalg, Gabriele, Menges-Flanagan, Eva, Deitmann   +3 more
core   +1 more source

A one dimensional model for the prediction of extraction yields in a two phases modified twin-screw extruder [PDF]

, 2002
Solid/liquid extraction is performed on raw plant substrate with a modified twin-screw extruder (TSE) used as a thermo-mecanochemical reactor. Visual observations and experimental residence time distributions (RTD) are used to develop a solid transport ...
Prat, Laurent E., Guiraud, Pascal, Prat, Laurent, Gourdon, Christophe, Rigal, Luc   +4 more
core   +1 more source