Results 101 to 110 of about 849 (184)

New waveguide method for studying water-saturated sediment sound speed dispersion at low frequencies [PDF]

open access: yes, 2014
This research investigates a new technique to measure the sound speed in water-saturated sediment at low frequencies (under 2 kHz). Due to the difficulty in acquiring low frequency data, dominant models for predicting sediment sound speed dispersion ...
McCarty, Adrienne
core  

Stimulation mechanism and model application of CO2 pre-pad fracturing for production enhancement in tight glutenite reservoirs

open access: yesYouqi dizhi yu caishoulu
Tight glutenite reservoirs are generally characterized by low porosity, low permeability, high flow resistance, and poor natural productivity, making effective stimulation methods essential to enhance oil recovery. CO2 pre-pad fracturing, as an effective
TIAN Leng   +6 more
doaj   +1 more source

Ion-Exchange Membranes and Processes. [PDF]

open access: yesMembranes (Basel), 2021
Pismenskaya N, Nikonenko V.
europepmc   +1 more source

Microsc Res Tech [PDF]

open access: yes
A significant hurdle in conducting effective health and safety hazard analysis and risk assessment for the nanotechnology workforce is the lack of a rapid method for the direct visualization and analysis of filter media used to sample nanomaterials from ...

core  

A Coupled Multi-Mechanism Modeling Study for the Fractured Horizontal Well in Shale Oil Reservoirs

open access: yesEnergies
Shale oil reservoirs are characterized by ultra-low matrix permeability. After large-scale hydraulic fracturing is applied to horizontal wells, fluid transport becomes highly complex, posing major challenges for accurately predicting production ...
Yilin Ren   +6 more
doaj   +1 more source

Analytical Methods for Nanomaterial Determination in Biological Matrices. [PDF]

open access: yesMethods Protoc, 2022
Vladitsi M   +3 more
europepmc   +1 more source

J Biophotonics [PDF]

open access: yes
Inhalation exposure to engineered nanomaterials (ENMs) may result in adverse pulmonary and/or systemic health effects. In this study, enhanced darkfield microscopy (EDFM) was used as a novel approach to visualizing industrial metal oxide nanoparticles ...

core  

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