نتایج جستجو برای: reservoir

تعداد نتایج: 41595  

Journal: :civil engineering infrastructures journal 0
fereshteh nourmohammadi dehbalaei msc. department of civil engineering, razi university, kermanshah, iran, mitra javan assistant professor, department of civil engineering, razi university – water and wastewater research center, razi university, kermanshah, iran afshin eghbalzaeh assistant professor, department of civil engineering, razi university – water and wastewater research center, razi university, kermanshah, iran morteza eftekhari director of water resource institute (wri), tehran, iran seyad ehsan fatemi assistant professor, faculty of agriculture and natural resources water engineering department, razi university, kermanshah, iran

in this research, a 2d laterally averaged model of hydrodynamics and water quality, ce-qual-w2, was applied to simulate water quality parameters in the ilam reservoir. the water quality of ilam reservoir was obtained between mesotrophic and eutrophic based on the measured data including chlorophyll a, total phosphorus and subsurface oxygen saturation. the ce-qual-w2 model was calibrated and ver...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2015
Nicholas D. Haynes Miguel C. Soriano Ingo Fischer Daniel J. Gauthier

We demonstrate reservoir computing with a physical system using a single autonomous Boolean logic element with time-delay feedback. The system generates a chaotic transient with a window of consistency lasting between 30 and 300 ns, which we show is sufficient for reservoir computing. We then characterize the dependence of computational performance on system parameters to find the best operatin...

Journal: :Anaesthesia 2007
M Eales P Rowe R Tully

We investigated modifications to the reservoir tube usually used in drawover anaesthetic breathing systems as a method of improving its efficiency and performance. The resulting oxygen concentration was recorded at different oxygen flow rates whilst an artificial lung was being ventilated over a range of minute volumes. Addition of a reservoir bag and valves significantly increased the measured...

2003
B. J. Dalton B. M. Garraway

The dynamics of a three-level atom in a cascade ~or ladder! configuration with both transitions coupled to a single structured reservoir of quantized electromagnetic field modes is treated using Laplace transform methods applied to the coupled amplitude equations. In this system two-photon excitation of the reservoir occurs, and both sequences for emitting the two photons are allowed and includ...

Journal: :American journal of physiology. Heart and circulatory physiology 2005
Sydney L Gaynor Hersh S Maniar Sunil M Prasad Paul Steendijk Marc R Moon

The purpose of this study was to investigate the relationship between right atrial (RA) reservoir and conduit function and to determine how hemodynamic changes influence this relationship and its impact on cardiac output. In 11 open-chest sheep, RA reservoir and conduit function were quantified as RA inflow with the tricuspid valve closed versus open, respectively. Conduit function was separate...

2011
Nicole Barbosa Sultanum Nicole Barbosa Ehud Sharlin

Oil and gas reservoir flow simulation models are computational models that converge reservoir data collected from several sources into a single entity. They are used by reservoir engineers to forecast reservoir behaviour, a fundamental activity for better understanding of the underground reserves; they are also analyzed and discussed by a team of experts in related fields, ultimately attempting...

1999
C. Coll X. D. Jing A. H. Muggeridge

Reservoir heterogeneities exist at several length scales. Reservoir properties will depend on the scale that we are analysing on the reservoir (from core to grid block). Facies are normally identified in cores and classified based on microscopic and small scale features such as lithology, grain size, texture, sedimentary structure, colour and fossil content. However, facies information is only ...

Journal: :Remote Sensing 2017
Sarah K. Jones Alexander K. Fremier Fabrice A. DeClerck David Smedley Aline Ortega Pieck Mark Mulligan

Whether or not reservoirs contain water throughout the dry season is critical to avoiding late season crop failure in seasonally-arid agricultural landscapes. Locations, volumes, and temporal dynamics, particularly of small (<1 Mm3) reservoirs are poorly documented globally, thus making it difficult to identify geographic and intra-annual gaps in reservoir water availability. Yet, small reservo...

The reservoir-induced seismicity (RIS) at the Karkheh dam site with a reservoir capacity of about 7.4x109 meters is investigated. Based on the assessment of the seismicity of the dam site in equal time periods before and after reservoir impoundment, it was found that the number of earthquakes have been tripled after impoundment, while their magnitudes and focal depths become smaller. The averag...

Journal: :پژوهش نفت 0

the electrical resistivity of hydrocarbon reservoir rocks is an important parameters in the calculation of water and oil saturation percent in both carbonate and sandstone reservoir rocks.in this regard, most studies have concentrated on the confining  pressure on cementation factor and electrical resistivity in sandstone reservoir rocks. in this study the effect of confining pressure on cement...

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