Results 11 to 20 of about 3,838,736 (307)

Algal recolonization following an extraordinary drought in permanent lowland streams

open access: yesEcología Austral, 2023
Droughts reduce habitat and fragment the continuity of running water systems producing lasting effects on sediment biota and affecting density and biomass of algae.
María M. Nicolosi Gelis   +3 more
doaj   +1 more source

Flow Admission Control for Users Considering Dissatisfactions With Selection Errors and Loss Using Stochastic Evolutionary Game and Queueing Theory

open access: yesIEEE Access, 2023
Currently, streaming communications are widespread through YouTube and other media. Streaming communication focuses on real-time communication and requires flow admission control to ensure communication quality.
Sumiko Miyata, Taichi Kojima
doaj   +1 more source

Effects of a Combination Impeller on the Flow Field and External Performance of an Aero-Fuel Centrifugal Pump

open access: yesEnergies, 2020
Aero-fuel centrifugal pumps are important power plants in aero-engines. Unlike most of the existing centrifugal pumps, a combination impeller is integrated with the pump to improve performance.
Jia Li   +5 more
doaj   +1 more source

Evaluation of Injection Strategies in Supersonic Nozzle Flow

open access: yesAerospace, 2021
The ability to manipulate shock patterns in a supersonic nozzle flow with fluidic injection is investigated numerically using Large Eddy Simulations.
Bernhard Semlitsch, Mihai Mihăescu
doaj   +1 more source

Proportional loss functions for debris flow events [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2013
Quantitative risk assessments of debris flows and other hydrogeological hazards require the analyst to predict damage potentials. A common way to do so is by use of proportional loss functions.
C. M. Rheinberger   +2 more
doaj   +1 more source

Analysis of Energy Loss Characteristics of Vertical Axial Flow Pump Based on Entropy Production Method under Partial Conditions

open access: yesEntropy, 2022
The energy loss of the vertical axial flow pump device increases due to the unstable internal flow, which reduces the efficiency of the pump device and increases its energy consumption of the pump device.
Fan Yang   +5 more
doaj   +1 more source

Annual Fluctuations in Winter Colony Losses of Apis mellifera L. Are Predicted by Honey Flow Dynamics of the Preceding Year

open access: yesInsects, 2022
Winter loss rates of honey bee colonies may fluctuate highly between years in temperate climates. The present study combined survey data of autumn and winter loss rates in Germany (2012–2021) with estimates of honey flow—assessed with automated hive ...
Jes Johannesen   +3 more
doaj   +1 more source

Mathematical Modeling Study of Pressure Loss in the Flow Channels of Additive Manufacturing Aviation Hydraulic Valves

open access: yesEnergies, 2023
The application of additive manufacturing in the field of aviation hydraulics greatly improves the design freedom of hydraulic valve internal flow channels.
Dongfei Li   +3 more
doaj   +1 more source

Physical modelling of energy losses at surcharged three-way junction manholes in drainage system

open access: yesWater Science and Technology, 2022
Motivated by the observation that vortex flow structure was evident in the energy loss at the surcharged junction manhole due to changes of hydraulic and geometrical parameters, a physical model was used to calculate energy loss coefficients and ...
Qijie Li   +5 more
doaj   +1 more source

Hydraulic Performance and Energy Loss Effect of Pit Structure Optimized Drip Irrigation Emitter [PDF]

open access: yesNature Environment and Pollution Technology, 2022
The pit structure optimized drip irrigation emitter (PODE) is a novel type of irrigation emitter that may provide shunts, quick diversion, and mixed flow to maximize energy loss.
Tianyu Xu, Shuteng Zhi, Qiuyue Yu and Ennan Zheng
doaj   +1 more source

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