Results 31 to 40 of about 189,797 (303)

Emergency Operation of Water Diversion and Power Generation Hubs Based on Adaptive Regulation [PDF]

open access: yes长江科学院院报
[Objective] The integrated operation of water diversion and power generation hubs faces challenges in maintaining hydraulic stability during emergencies, particularly under sudden load rejection conditions.
NIE Yan-hua, HU Han, HOU Dong-mei
doaj   +1 more source

Controls on spatial and temporal variations in sand delivery to salmonid spawning riffles [PDF]

open access: yes, 2017
Fine sediment infiltration into gravel interstices is known to be detrimental to incubating salmonid embryos. Infiltration into spawning riffles can show large spatial variations at the scale of a morphological unit and over time, with significant ...
Milan, David
core   +1 more source

Geometric displacement volume and flow in the phase of a two-phase hydraulic converter

open access: yesResearch in Agricultural Engineering, 2007
The paper researches the possibilities to replace the parallel flow hydraulic mechanisms in agricultural machinery with hydraulic units with fluid alternating flow as they provide more efficient operation due to their output alternating motion.
J. Turza, Z. Tkáč, M. Gullerová
doaj   +1 more source

Characterizing Natural Fractures and Their Interactions with Hydraulically Induced Fractures [PDF]

open access: yes, 2018
Natural fractures are preexisting micro-cracks and fissures that can have a critical impact on hydraulic fracture treatments in shales. Most shale formations contain natural fractures, but the characteristics of these natural fractures can vary ...
Amandes, Charlotte
core   +2 more sources

VARIABILIDADE ESPACIAL NO SISTEMA AQÜÍFERO GUARANI: CONTROLES ESTRUTURAIS E ESTRATIGRÁFICOS

open access: yesRevista Águas Subterrâneas, 2007
The Guarani Aquifer System includes six Brazilian states and smaller areas in Paraguay, Uruguayand Argentina. It consists predominantly of Mesozoic siliciclastic sediments of aeolian and fluvial origin in Brazilreferred to as the Pirambóia and Botucatu ...
Ana Paula Soares   +3 more
doaj   +1 more source

Functional water flow pathways and hydraulic regulation in the xylem network of arabidopsis [PDF]

open access: yes
In vascular plants, the xylem network constitutes a complex microfluidic system. The relationship between vascular network architecture and functional hydraulic regulation during actual water flow remains unexplored.
Ahn, S   +5 more
core   +1 more source

A fluid flow perspective on the diagenesis of Te Aute limestones [PDF]

open access: yes, 2004
Pliocene cool-water, bioclastic Te Aute limestones in East Coast Basin, New Zealand, accumulated either in shelfal shoal areas or about structurally shallow growth fold structures in the tectonically active accretionary forearc prism.
Caron, Vincent   +2 more
core   +4 more sources

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Pore size determination using normalized J-function for different hydraulic flow units

open access: yesPetroleum, 2015
Pore size determination of hydrocarbon reservoirs is one of the main challenging areas in reservoir studies. Precise estimation of this parameter leads to enhance the reservoir simulation, process evaluation, and further forecasting of reservoir behavior.
Ali Abedini, Farshid Torabi
doaj   +1 more source

Fractal model and Lattice Boltzmann Method for Characterization of Non-Darcy Flow in Rough Fractures. [PDF]

open access: yes, 2017
The irregular morphology of single rock fracture significantly influences subsurface fluid flow and gives rise to a complex and unsteady flow state that typically cannot be appropriately described using simple laws.
Chang, Chun   +4 more
core   +1 more source

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