Results 1 to 10 of about 351,968 (210)

The three-dimensional structure of a proton-pumping pathway, the H-pathway, is evolutionarily conserved in all three families of cytochrome c oxidase [PDF]

open access: yesFrontiers in Chemistry
The O2 reduction site of bovine cytochrome c oxidase (CcO) comprises two redox-active metal centers: Fea3 and CuB. O2 is reduced at Fea3 by four electrons transferred from cytochrome c in the P-side phase.
Atsuhiro Shimada   +3 more
doaj   +2 more sources

Agri-solar water pumping design, energy, and environmental analysis: A comprehensive study in tropical humid climate [PDF]

open access: yesHeliyon
Agrivoltaics is an innovative approach where solar energy, water, land and biodiversity are integrated into the same area to maximize resource utilization for sustainable development, also known as Agrivoltaism. The combination of solar water pumping and
Rittick Maity   +2 more
doaj   +2 more sources

Methodology for assessing the efficiency of water jet pumps in auxiliary systems of irrigation pumping stations [PDF]

open access: yesE3S Web of Conferences, 2021
The reliability and efficiency of irrigation pumping stations operation primarily depends on the well-coordinated operation of all systems. Drainage system should ensure that the building and territory of the pumping station are not flooded by drainage ...
Kan Eduard   +3 more
doaj   +1 more source

Optimizing the cost of pumping of urban drinking water wells using the PSO metaheuristic Algorithm [PDF]

open access: yesمهندسی منابع آب, 2021
The interaction effect of pumping costs and water consumption must be controlled and optimized. Supplying drinking water from underground water resources must be done according to a precise pre-designed plan so that It is optimized for both pumping and ...
Masoud Abdi   +2 more
doaj   +1 more source

Analysis of Stress–Strain Characteristics and Signal Coherence of Low-Specific-Speed Impeller Based on Fluid–Structure Interaction

open access: yesJournal of Marine Science and Engineering, 2023
In this study, an analysis of a low-specific-speed pump is carried out based on the methods of one-way and two-way fluid–structure interactions (FSIs). This study analyzes the influence of FSIs on the internal flow field and external characteristics of ...
Fengquan Qiao   +6 more
doaj   +1 more source

Effect of parallel connection of pumping units on operating costs of pumping station [PDF]

open access: yesE3S Web of Conferences, 2019
In Uzbekistan, as well as in many other countries of the world, pumping units operate in parallel into a common pressure pipeline at some pumping stations of the irrigation system.
Ikramov Nazir   +3 more
doaj   +1 more source

Spatiotemporal Distribution and Critical Hydraulic Condition for Erosion-deposition of Sediment in Channels in Pumping Irrigation District

open access: yesGuan'gai paishui xuebao, 2022
【Objective】 The purpose of this paper is to study erosion-deposition of sediment, its influencing factors, as well as its critical hydraulic condition in channels in pumping irrigation districts.
LI Chao, YU Jian, LI Weishuai, LI Quan
doaj   +1 more source

Water pumps [PDF]

open access: yesThe Journal of Physiology, 2002
The transport of water across epithelia has remained an enigma ever since it was discovered over 100 years ago that water was transported across the isolated small intestine in the absence of osmotic and hydrostatic pressure gradients. While it is accepted that water transport is linked to solute transport, the actual mechanisms are not well understood.
Loo, D.D.F.   +2 more
openaire   +3 more sources

Numerical Analysis of Energy Loss in Stall Zone for Full Tubular Pump Based on Entropy Generation Theory

open access: yesJournal of Marine Science and Engineering, 2023
As a low-head and non-drive pump, the head reduction and stall advance are the key factors that restrict the popularization and application of the full tubular pump (FTP).
Lijian Shi   +6 more
doaj   +1 more source

Optimization of Energy Consumption in the Pumping Station Supplying Two Zones of the Water Supply System

open access: yesEnergies, 2022
Water supply pumping stations are among the main energy-consuming elements in the water supply system. The energy optimization of a pumping station can significantly affect the energy consumption of a water utility.
Martyna Świętochowska   +1 more
doaj   +1 more source

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