Results 21 to 30 of about 5,554,424 (282)

Ground-Penetrating Radar Method for Studying Water Drainage in Sand Layers

open access: yesFluids, 2022
A ground-penetrating radar (GPR) technology was developed to study the process of water drainage in sand layers with an insignificant concentration of dusty and clayey particles when moistened from above.
Vladimir Shapovalov   +4 more
doaj   +1 more source

The Effect of Fracturing Fluid Saturation on Natural Gas Flow Behavior in Tight Reservoirs

open access: yesEnergies, 2020
Hydraulic fracturing becomes an essential method to develop tight gas. Under high injection pressure, fracturing fluid entering into the formation will reduce the flow channel.
Mianmo Meng   +4 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Assessing pore quality impact on saturation exponent and water saturation calculation

open access: yesJournal of Petroleum Exploration and Production Technology
The saturation exponent is one of the most important parameters needed to calculate water saturation in Archie’s equation. Generally, the saturation exponent is considered constant, but not all depth intervals have the same characteristics.
Suryo Prakoso   +4 more
doaj   +1 more source

DETERMINATION OF PARAMETER SATURATION IN THERMOBARIC CONDITIONS ON UNCONSOLIDATED CORE OF CENOMANIAN DEPOSITION

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2018
The article is devoted to the study of difference between the electric properties received in atmospheric and thermobaric conditions for unconsolidated rocks.
N. Yu. Moskalenko, V. G. Mamyashev
doaj   +1 more source

Study on the relationship between the water cutting rate and the remaining oil saturation of the reservoir by using the index percolating saturation formula with variable coefficients

open access: yesJournal of Petroleum Exploration and Production Technology, 2020
The water cutting rate is recorded dynamically during the production process of a well. If the remaining oil saturation of the reservoir can be deduced based on the water cutting rate, it will give guidance to improve the reservoir recovery and can save ...
Meiling Zhang   +3 more
doaj   +1 more source

Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size

open access: yesEnergies, 2020
Assessing the influence of key parameters governing the formation of hydrates and determining the capacity of the latter to store gaseous molecules is needed to improve our understanding of the role of natural gas hydrates in the oceanic methane cycle ...
Fatima Doria Benmesbah   +6 more
doaj   +1 more source

Single-Bubble Sonoluminescence in Air-Saturated Water

open access: yesPhysical Review Letters, 2003
Single bubble sonoluminescence (SBSL) is realized in air-saturated water at ambient pressure and room temperature. The behavior is similar to SBSL in degassed water, but with a higher spatial variability of the bubble position. A detailed view on the dynamics of the bubbles shows agreement between calculated shape stability borders but differs slightly
Krefting, D.   +2 more
openaire   +3 more sources

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Effects of soil water table regime on tree community species richness and structure of alluvial forest fragments in Southeast Brazil

open access: yesBrazilian Journal of Biology
In order to determine the influence of soil water table fluctuation on tree species richness and structure of alluvial forest fragments, 24 plots were allocated in a point bar forest and 30 plots in five forest fragments located in a floodplain, in the ...
AC. Silva, P. Higuchi, E. van den Berg
doaj   +1 more source

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