Results 31 to 40 of about 21,143 (274)
Enhanced nitrification and denitrification by means of backflow without sludge
上海师范大学学报. 自然科学版, 2020 Municipal wastewater treatments were mainly carried out by activated sludge currently, for which anoxic/oxic(A/O) was widely accepted to enhance nitrogen(N)removals.In this process, wastewater flows back and forth between A and O tanks together with ...
LU Qinyuan +4 more
doaj +1 more source
Chemical and Process Engineering, 2017 A rotor-stator spinning disk reactor for intensified biodiesel synthesis is described and numerically simulated in the present research. The reactor consists of two flat disks, located coaxially and parallel to each other with a gap ranging from 0.1 mm ...
Wen Zhuqing, Petera Jerzy
doaj +1 more source
Energies, 2022 Pollutant emission standards and, in particular, those concerning particles from an internal combustion engine (ICE) are becoming increasingly restrictive.
Vincent Berthome +2 more
doaj +1 more source
Unbounded quantum backflow in two dimensions [PDF]
, 2022 Quantum backflow refers to the counterintuitive fact that the probability can flow in the direction opposite to the momentum of a quantum particle. This phenomenon has been seen to be small and fragile for one-dimensional systems, in which the maximal ...
Srivastava, Shashi C.L. +7 more
core +1 more source
Slip Backflow of Polymers in Elastic Fractures for Subsurface Heat Recovery
Energies, 2023 This research delves into the complexities of backflow phenomena in finite-length and flat-walled fractures with elastic walls, specifically focusing on power-law fluids, whose shear-thinning behavior distinguishes them from Newtonian fluids.
Alessandro Lenci +3 more
doaj +1 more source
A tangential regularization method for backflow stabilization in hemodynamics [PDF]
, 2013 In computational simulations of fluid flows, instabilities at the Neumann boundaries may appear during backflow regime. It is widely accepted that this is due to the incoming energy at the boundary, coming from the convection term, which cannot be ...
Bertoglio, Cristóbal, Caiazzo, Alfonso
core +1 more source
On the experiment-friendly formulation of quantum backflow [PDF]
Quantum, 2021 In its standard formulation, quantum backflow is a classically impossible phenomenon in which a free quantum particle in a positive-momentum state exhibits a negative probability current. Recently, Miller et al. [Quantum 5, 379 (2021)] have put forward a
Maximilien Barbier, Arseni Goussev
doaj +1 more source
Energy backflow in unidirectional spatiotemporally localized wavepackets [PDF]
, 2023 Backflow, or retro-propagation, is a counterintuitive phenomenon where for a forward-propagating wave the energy or probability density locally propagates backward.
Saari, Peeter, Besieris, Ioannis
core +1 more source
Impact of fractures on convective-mixing characteristics of carbon dioxide in saline aquifers
工程科学学报Fractures serve as the main channels for rapid CO2 diffusion and escape during sequestration in saline aquifers. While existing studies have focused on how fracture characteristics and chemical reactions affect CO2 convective mixing, the specific ...
Qigui TAN +3 more
doaj +1 more source
Backflow Power Optimization of DAB Based on Asymmetric Duty Cycle and Internal Phase Shift Control
IEEE Access, 2023 Dual active bridge (DAB) converter with single-phase-shifting (SPS) control would produce large backflow power when voltage regulation ratio deviates from 1 or under light load, an asymmetric duty cycle and internal phase shift (ADIPS) control was ...
Fei Xie, Hao Wang, Jie Shu
doaj +1 more source