Results 21 to 30 of about 834,609 (355)
Evaluating the pore structure of low permeability glutenite reservoir by 3D digital core technology
SN Applied Sciences, 2022 Article highlights This paper uses the image binary segmentation method to separate the gray images of µ-CT scans of glutenite cores, and the pore space and skeleton of different rocks are characterized.
Qing Zhou +5 more
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Structural details of dictyosomal pores [PDF]
Journal of Ultrastructure Research, 1972 Structural details of the dictyosomal pores in several plant cell types are described from tangential and cross sections of Golgi cisternae. Frequency distributions of the sizes of such Golgi pores are given and compared with the corresponding values of nuclear pores in the same cells.
Franke, Werner W., Scheer, Ulrich
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International Journal of Coal Science & Technology, 2023 Pore structure is a crucial factor affecting the physical properties of porous materials, and understanding the mechanisms and laws of these effects is of great significance in the fields of geosciences and petroleum engineering.
Xiaobin Li +4 more
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Quantitative characterization of pore structure in coal measure shales based on deep learning
Meitan 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
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Nuclear Pore Complex StructureUnplugged and Dynamic Pores [PDF]
Developmental Cell, 2004 Nuclear pore complexes (NPCs) are large protein assemblies embedded in the nuclear envelope that act as passageways for transport of molecules into and out of the nucleus. Two new studies, one in Nature Cell Biology and one in Science , offer direct evidence that the NPC is a highly dynamic structure.
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The crystal structure of Pneumolysin at 2.0 Å resolution reveals the molecular packing of the pre-pore complex [PDF]
, 2015 Pneumolysin is a cholesterol-dependent cytolysin (CDC) and virulence factor of Streptococcus pneumoniae. It kills cells by forming pores assembled from oligomeric rings in cholesterol-containing membranes.
Andrew, Peter W +8 more
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Petroleum Exploration and Development, 2019 In order to quantify coal pore structure heterogeneity and anisotropy, synchrotron radiation SAXS (Small Angle X-ray Scattering) was applied to obtain the SAXS images of two different rank coal samples. The surface fractal dimension (D1) and pore fractal
Yingfeng SUN +4 more
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Comprehensive characterization of nano-pore system for Chang 7 shale oil reservoir in Ordos Basin
Energy Exploration & Exploitation, 2021 Detailed study on the pore structure of shale oil reservoir is significantly for the exploration and development, and the conventional single pore structure measurement method cannot accurately describe the pore structure characteristics of the shale oil
Hui Gao +6 more
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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
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Atomic Structure of Graphene Subnanometer Pores [PDF]
ACS 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
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