Results 21 to 30 of about 7,411,026 (309)

Quantitative characterization of pore structure in coal measure shales based on deep learning

open access: yesMeitan kexue jishu, 2023
Reservoir pore structure is an important factor affecting shale gas exploration and development. In order to accurately characterize the nanopore structure in coal-measure shale reservoirs, this paper takes coal-measure shale in the Muli area of Qinghai ...
Anmin WANG   +4 more
doaj   +1 more source

On the Structure and Mechanism of Two-Pore Channels [PDF]

open access: yesThe FEBS Journal, 2017
Abstract In eukaryotes, two-pore channels (TPC1-3) comprise a family of ion channels that regulate the conductance of Na + and Ca 2+ ions across cellular membranes.
Kintzer, Alexander F., Stroud, Robert M.
openaire   +5 more sources

Pore surface exploration by NMR [PDF]

open access: yes, 2003
A carefully chosen set of experimental techniques applied to porous media characterization provides results that can be much greater than the sum of the individual parts.
Webber, J. Beau W.   +2 more
core   +1 more source

Evaluating methods for logging the pore structure of tight sandstone reservoir in Chang 6 member of the Yanchang Formation, Ordos Basin [PDF]

open access: yesArchives of Civil Engineering
Pore structure is a key parameter used to evaluate reservoir quality. At present, experimental method is the most important method to analyze reservoir pore structure.
Gaorun Zhong, Yajun Li, Yuhan Tan
doaj   +1 more source

Fractal characteristics of pore-throat structure in tight sandstones using high-pressure mercury intrusion porosimetry

open access: yes地质科技通报, 2021
Microcosmic pore-throat structure is an important factor affecting the characteristics of sandstone reservoirs.However, the pore-throat of tight sandstone is complex and heterogeneous, which is difficult to be effectively characterized by conventional ...
Wei Wang   +5 more
doaj   +1 more source

Experimental Study on Pore Characteristics and Fractal Dimension Calculation of Pore Structure of Aerated Concrete Block

open access: yesAdvances in Civil Engineering, 2019
It is important to control and predict the macroscopic properties through pore structure parameters of cement-based materials. Microscopic pore structure of concrete has many characteristics, such as sizes and disordered distribution.
Jun Fu, Yue Yu
doaj   +1 more source

Atomic Structure of Graphene Subnanometer Pores [PDF]

open access: yesACS Nano, 2015
The atomic structure of subnanometer pores in graphene, of interest due to graphene's potential as a desalination and gas filtration membrane, is demonstrated by atomic resolution aberration corrected transmission electron microscopy. High temperatures of 500 °C and over are used to prevent self-healing of the pores, permitting the successful imaging ...
Robertson, A   +7 more
openaire   +3 more sources

A solid with a hierarchical tetramodal micro-meso-macro pore size distribution [PDF]

open access: yes, 2013
Porous solids have an important role in addressing some of the major energy-related problems facing society. Here we describe a porous solid, alpha-MnO2, with a hierarchical tetramodal pore size distribution spanning the micro-, meso-and macro pore range,
Ren, Yu   +6 more
core   +1 more source

A tight sandstone trapezoidal pore oil saturation model

open access: yesPetroleum Exploration and Development, 2017
: “Non-Archie” phenomena are common in tight sandstone reservoirs with complicated pore structure, bringing challenges to the logging evaluation of tight sandstone.
Shengfu HU   +4 more
doaj   +1 more source

Study on pore fractal characteristics of acidified coal samples based on low temperature nitrogen experiment

open access: yesMeikuang Anquan, 2021
In order to study and improve the pore structure characteristics of mineral-rich coal, the content of carbonate minerals and pore structure parameters of lean coal before and after acidification were measured based on X-ray diffraction and low ...
JIA Nan
doaj   +1 more source

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