Academic literature on the topic 'Nuclear pore complex (NPCs)'

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Journal articles on the topic "Nuclear pore complex (NPCs)"

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Rout, M. P., and G. Blobel. "Isolation of the yeast nuclear pore complex." Journal of Cell Biology 123, no. 4 (1993): 771–83. http://dx.doi.org/10.1083/jcb.123.4.771.

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Nuclear pore complexes (NPCs) have been isolated from the yeast Saccharomyces. Negative stain electron microscopy of the isolated NPCs and subsequent image reconstruction revealed the octagonal symmetry and many of the ultrastructural features characteristic of vertebrate NPCs. The overall dimensions of the yeast NPC, both in its isolated form as well as in situ, are smaller than its vertebrate counterpart. However, the diameter of the central structures are similar. The isolated yeast NPC has a sedimentation coefficient of approximately 310 S and an M(r) of approximately 66 MD. It retains all
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Hampoelz, Bernhard, Amparo Andres-Pons, Panagiotis Kastritis, and Martin Beck. "Structure and Assembly of the Nuclear Pore Complex." Annual Review of Biophysics 48, no. 1 (2019): 515–36. http://dx.doi.org/10.1146/annurev-biophys-052118-115308.

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Nuclear pore complexes (NPCs) mediate nucleocytoplasmic exchange. They are exceptionally large protein complexes that fuse the inner and outer nuclear membranes to form channels across the nuclear envelope. About 30 different protein components, termed nucleoporins, assemble in multiple copies into an intricate cylindrical architecture. Here, we review our current knowledge of the structure of nucleoporins and how those come together in situ. We delineate architectural principles on several hierarchical organization levels, including isoforms, posttranslational modifications, nucleoporins, and
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Reichelt, R., A. Holzenburg, E. L. Buhle, M. Jarnik, A. Engel, and U. Aebi. "Correlation between structure and mass distribution of the nuclear pore complex and of distinct pore complex components." Journal of Cell Biology 110, no. 4 (1990): 883–94. http://dx.doi.org/10.1083/jcb.110.4.883.

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Nuclear pore complexes (NPCs) prepared from Xenopus laevis oocyte nuclear envelopes were studied in "intact" form (i.e., unexposed to detergent) and after detergent treatment by a combination of conventional transmission electron microscopy (CTEM) and quantitative scanning transmission electron microscopy (STEM). In correlation-averaged CTEM pictures of negatively stained intact NPCs and of distinct NPC components (i.e., "rings," "spoke" complexes, and "plug-spoke" complexes), several fine structural features arranged with octagonal symmetry about a central axis could reproducibly be identifie
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Lyman, Susan K., and Larry Gerace. "Nuclear pore complexes: dynamics in unexpected places." Journal of Cell Biology 154, no. 1 (2001): 17–20. http://dx.doi.org/10.1083/jcb.200106071.

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In vivo studies on the dynamics of the nuclear pore complex (NPC) in yeast suggested that NPCs are highly mobile in the nuclear envelope. However, new evidence indicates that in mammalian cells NPCs are stably attached to a flexible lamina framework, but a peripheral component can exchange rapidly with an intranuclear pool.
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Akey, Christopher W., Ignacia Echeverria, Christna Ouch, et al. "Implications of a multiscale structure of the yeast Nuclear Pore Complex." Molecular Cell 83, no. 18 (2023): 3283–302. https://doi.org/10.5281/zenodo.8226857.

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Nuclear Pore Complexes (NPCs) direct the nucleocytoplasmic transport of macromolecules. Here we provide a composite multiscale structure of the yeast NPC based on improved 3D density maps from electron cryo-microscopy and AlphaFold2 atomic models. Key features of the inner and outer rings were integrated into a comprehensive model. We resolved flexible connectors that tie together the core scaffold, along with equatorial transmembrane complexes and a lumenal ring that anchor this channel within the pore membrane. The organization of the nuclear double outer ring reveals a common architecture t
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Allen, T. D., J. M. Cronshaw, S. Bagley, E. Kiseleva, and M. W. Goldberg. "The nuclear pore complex: mediator of translocation between nucleus and cytoplasm." Journal of Cell Science 113, no. 10 (2000): 1651–59. http://dx.doi.org/10.1242/jcs.113.10.1651.

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The enclosure of nuclear contents in eukaryotes means that cells require sites in the boundary that mediate exchange of material between nucleus and cytoplasm. These sites, termed nuclear pore complexes (NPCs), number 100–200 in yeast, a few thousand in mammalian cells and approximately 50 million in the giant nuclei of amphibian oocytes. NPCs are large (125 MDa) macromolecular complexes that comprise 50–100 different proteins in vertebrates. In spite of their size and complex structure, NPCs undergo complete breakdown and reformation at cell division. Transport through NPCs can be rapid (esti
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Makio, Tadashi, Leslie H. Stanton, Cheng-Chao Lin, David S. Goldfarb, Karsten Weis, and Richard W. Wozniak. "The nucleoporins Nup170p and Nup157p are essential for nuclear pore complex assembly." Journal of Cell Biology 185, no. 3 (2009): 459–73. http://dx.doi.org/10.1083/jcb.200810029.

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We have established that two homologous nucleoporins, Nup170p and Nup157p, play an essential role in the formation of nuclear pore complexes (NPCs) in Saccharomyces cerevisiae. By regulating their synthesis, we showed that the loss of these nucleoporins triggers a decrease in NPCs caused by a halt in new NPC assembly. Preexisting NPCs are ultimately lost by dilution as cells grow, causing the inhibition of nuclear transport and the loss of viability. Significantly, the loss of Nup170p/Nup157p had distinct effects on the assembly of different architectural components of the NPC. Nucleoporins (n
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Akey, C. W. "Interactions and structure of the nuclear pore complex revealed by cryo-electron microscopy." Journal of Cell Biology 109, no. 3 (1989): 955–70. http://dx.doi.org/10.1083/jcb.109.3.955.

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Nuclear pore complexes (NPCs) play a central role in mediating nucleocytoplasmic transport and exchange processes in eukaryotic cells. The arrangement and interactions of NPCs within amphibian nuclear envelopes have been studied using cryo-electron microscopy of unfixed and frozen hydrated specimens. The nuclear lamina in Necturus forms an orthogonal network with crossover distances which vary between 1,600 and 4,000 A and which may be related to the basic filament repeat of lamins. Furthermore, the NPCs are attached randomly within the confines of the lamin network, presumably by their nucleo
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Stavru, Fabrizia, Gitte Nautrup-Pedersen, Volker C. Cordes, and Dirk Görlich. "Nuclear pore complex assembly and maintenance in POM121- and gp210-deficient cells." Journal of Cell Biology 173, no. 4 (2006): 477–83. http://dx.doi.org/10.1083/jcb.200601002.

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So far, POM121 and gp210 are the only known anchoring sites of vertebrate nuclear pore complexes (NPCs) within the lipid bilayer of the nuclear envelope (NE) and, thus, are excellent candidates for initiating the NPC assembly process. Indeed, we demonstrate that POM121 can recruit several nucleoporins, such as Nup62 or Nup358, to ectopic assembly sites. It thus appears to act as a nucleation site for the assembly of NPC substructures. Nonetheless, we observed functional NPCs and intact NEs in severely POM121-depleted cells. Double knockdowns of gp210 and POM121 in HeLa cells, as well as deplet
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Dultz, Elisa, Matthias Wojtynek, Ohad Medalia, and Evgeny Onischenko. "The Nuclear Pore Complex: Birth, Life, and Death of a Cellular Behemoth." Cells 11, no. 9 (2022): 1456. http://dx.doi.org/10.3390/cells11091456.

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Nuclear pore complexes (NPCs) are the only transport channels that cross the nuclear envelope. Constructed from ~500–1000 nucleoporin proteins each, they are among the largest macromolecular assemblies in eukaryotic cells. Thanks to advances in structural analysis approaches, the construction principles and architecture of the NPC have recently been revealed at submolecular resolution. Although the overall structure and inventory of nucleoporins are conserved, NPCs exhibit significant compositional and functional plasticity even within single cells and surprising variability in their assembly
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Dissertations / Theses on the topic "Nuclear pore complex (NPCs)"

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Lin, Junyan. "Assembly and function of cytosolic nuclear pore complexes." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAJ037.

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Les complexes des pores nucléaires (CPN) sont d'énormes assemblages protéiques intégrés dans l'enveloppe nucléaire (EN). Ils servent de structures pour le transport bidirectionnel. Essentiels, ils permettent le maintien de l'équilibre entre le noyau et le cytoplasme. Au-delà de leur résidence dans l'EN, les CPN se trouvent également dans des feuillets du réticulum endoplasmique (RE) empilés connus sous le nom de lamelles annulaires (LA). Cependant, la fonction et les voies régissant la biogenèse des LA restent énigmatiques. Notre investigation dans les cellules de mammifères révèle un mécanism
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Walther, Tobias. "The role of Peripheral Nuclear Pore Complex (NPC) structures in nuclear transport and NPC architecture." Diss., lmu, 2002. http://nbn-resolving.de/urn:nbn:de:bvb:19-4945.

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Kelich, Joseph M. "Single-Molecule Studies on Nuclear Pore Complex Structure and Function." Diss., Temple University Libraries, 2018. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/511772.

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Biology<br>Ph.D.<br>Nuclear pore complexes (NPCs) are large macromolecular gateways embedded in the nuclear envelope of Eukaryotic cells that serve to regulate bi-directional trafficking of particles to and from the nucleus. NPCs have been described as creating a selectively permeable barrier mediating the nuclear export of key endogenous cargoes such as mRNA, and pre-ribosomal subunits as well as allow for the nuclear import of nuclear proteins and some viral particles. Remarkably, other particles that are not qualified for nucleocytoplasmic transport are repelled from the NPC, unable to tran
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Lolodi, Ogheneochukome. "Kinetic analysis of karyopherin-mediated transport through the nuclear pore complex." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215696.

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Authors are permitted to post the MBoC PDF of their articles (and/or supplemental material) on their personal websites or in an online institutional repository provided there appears always the proper citation of the manuscript in MBoC and a link to the original publication of the manuscript in MBoC (http://www.molbiolcell.org/site/misc/ifora.xhtml)<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(生命科学)<br>甲第19869号<br>生博第350号<br>新制||生||46(附属図書館)<br>32905<br>京都大学大学院生命科学研究科統合生命科学専攻<br>(主査)教授 河内 孝之, 教授 藤田 尚志, 教授 永尾 雅哉<br>学位規則第4条第1項該当
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Liu, Hui-Lin. "Analyses of mitotic nuclear pore complex dynamics in Aspergillus nidulans." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243862963.

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Xu, Xianfeng. "Two sides of the plant nuclear pore complex and a potential link between Ran GTPase and plant cell division." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1190050471.

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Markossian, Sarine W. "Nup2 and a Newly Discovered Nuclear Pore Complex Protein, NupA, Function at Mitotic Chromatin Controlled by the NIMA Kinase." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306851345.

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Anderson, Daniel J. "Dynamics of nuclear envelope and nuclear pore complex formation." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p3336561.

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Thesis (Ph. D.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed December 16, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 127-145).
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Onischenko, Evgeny. "Disassembly and reassembly of the nuclear pore complex /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-929-7/.

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Osmanovic, D. "Polymer theory applied to the nuclear pore complex." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1451621/.

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Physically interesting behaviour can arise when soft matter is confined to nanoscale dimensions. A highly relevant biological example of such a phenomenon is the Nuclear Pore Complex (NPC), found perforating the Nuclear Envelope of all eukaryotic cells. In the central conduit of the NPC, of 30-60 nm diameter, a disordered arrangement of proteins regulates all macromolecular transport between the nucleus and the cytoplasm. Its selectivity for larger macromolecules relies on changes in a permeability barrier that is formed by these unstructured proteins, induced by interactions of these proteins
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Books on the topic "Nuclear pore complex (NPCs)"

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Goldberg, Martin W., ed. The Nuclear Pore Complex. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2337-4.

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Rollenhagen, Christiane. Investigation of the functional dynamics of the Nuclear Pore Complex (NPC). 2001.

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Nuclear Pore Complex: Methods and Protocols. Springer, 2022.

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Goldberg, Martin W. Nuclear Pore Complex: Methods and Protocols. Springer, 2022.

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Brown, Christopher Richard. Transcriptional regulation at the nuclear pore complex. 2008.

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Oakford, Lawrence Xavier. The isolation and initial characterization of nuclear envelope "ghosts" and nuclear pore complex morphology from Physarum polycephalum. 1986.

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Book chapters on the topic "Nuclear pore complex (NPCs)"

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Hazawa, Masaharu, Akiko Kobayashi, and Richard W. Wong. "NPCs in Mitosis and Chromosome Segregation." In Nuclear Pore Complexes in Genome Organization, Function and Maintenance. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71614-5_10.

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Heese-Peck, Antje, and Natasha V. Raikhel. "The nuclear pore complex." In Protein Trafficking in Plant Cells. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5298-3_8.

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Yu, Jingjie, Joseph Kelich, and Weidong Yang. "Assembly of Nuclear Pore Complex." In Nucleic Acids and Molecular Biology. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77309-4_1.

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Simon, Dan N., and Michael P. Rout. "Cancer and the Nuclear Pore Complex." In Cancer Biology and the Nuclear Envelope. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4899-8032-8_13.

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Fahrenkrog, B., D. Stoffler, and U. Aebi. "Nuclear Pore Complex Architecture and Functional Dynamics." In Nuclear Export of Viral RNAs. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56597-7_5.

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Bodoor, Khaldon, and Brian Burke. "Mitotic Control of Nuclear Pore Complex Assembly." In Nuclear Envelope Dynamics in Embryos and Somatic Cells. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0129-9_6.

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Kahms, Martin, Jana Hüve, and Reiner Peters. "4Pi Microscopy of the Nuclear Pore Complex." In Methods in Molecular Biology. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-2080-8_11.

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Liu, Winny, and Jason H. Brickner. "Nuclear Pore Complex-Regulated Transcription and Memory." In Epigenetics in Biological Communication. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-59286-7_11.

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Oborská-Oplová, Michaela, Ute Fischer, Martin Altvater, and Vikram Govind Panse. "Eukaryotic Ribosome assembly and Nucleocytoplasmic Transport." In Ribosome Biogenesis. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2501-9_7.

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AbstractThe process of eukaryotic ribosome assembly stretches across the nucleolus, the nucleoplasm and the cytoplasm, and therefore relies on efficient nucleocytoplasmic transport. In yeast, the import machinery delivers ~140,000 ribosomal proteins every minute to the nucleus for ribosome assembly. At the same time, the export machinery facilitates translocation of ~2000 pre-ribosomal particles every minute through ~200 nuclear pore complexes (NPC) into the cytoplasm. Eukaryotic ribosome assembly also requires &gt;200 conserved assembly factors, which transiently associate with pre-ribosomal
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Milligan, R. A. "A Structural Model for the Nuclear Pore Complex." In Nucleocytoplasmic Transport. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71565-5_10.

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Conference papers on the topic "Nuclear pore complex (NPCs)"

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Pidaparti, R. M., P. A. Sarma, A. S. C. Sinha, G. Vemuri, and A. M. Gacy. "Nuclear Membrane Dynamics of a Nuclear Pore Complex Structure." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/bed-23162.

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Abstract The nuclear pore complex (NPC) is an excellent example of a bio-molecular motor, since it operates primarily via energy dependent processes, and performs some of the most vital functions required for the survival of a cell. In the presence of appropriate chemical stimuli, the NPC apparently opens or closes, like a gating mechanism, and permits the flow of material in to and out of the nucleus. An NPC, with typical dimensions of 100–200 nm, is a megadalton (MDa) heteromultimeric protein complex, which spans the nuclear envelope and is postulated to possess a transporter-containing cent
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Gorav, Gorav, Vrushali Khedekar, Geetha K. Varier, and P. Nandakumar. "Enhanced Uptake and Retention of Graphene Quantum Dots in HeLa Cell Nuclei." In Bio-Optics: Design and Application. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/boda.2023.jtu4a.6.

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The nuclear pore complex (NPC) is an intricate protein structure located on the nuclear envelope that functions as the sole gateway for nuclear cytoplasm transport. Our experimental studies show the dual uptake rates of GQDs in HeLa nuclei indicate two phenomena occurring simultaneously. Export studies confirm bidirectionality and retention.
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Otsuka, Shotaro, Hirohide Takahashi, and Shige Yoshimura. "Single-molecule Structural and Functional Analyses of Nuclear Pore Complex." In 2006 IEEE International Symposium on MicroNanoMechanical and Human Science. IEEE, 2006. http://dx.doi.org/10.1109/mhs.2006.320314.

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Itoh, Goichi, Jinya Nakamura, Koji Kono, et al. "Pore-Scale Simulation for Predicting Material Transport Through Porous Media." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22563.

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Microscopic models of real-coded lattice gas automata (RLG) method with a special boundary condition and lattice Boltzmann method (LBM) are developed for simulating three-dimensional fluid dynamics in complex geometry. Those models enable us to simulate pore-scale fluid dynamics that is an essential part for predicting material transport in porous media precisely. For large-scale simulation of porous media with high resolution, the RLG and LBM programs are designed for parallel computation. Simulation results of porous media flow by the LBM with different pressure gradient conditions show quan
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Gao, Jun, Hyung T. Kwak, and Marwah AlSinan. "Accurate Carbonate Pore System Characterization by Nuclear Magnetic Resonance and Micro-CT Techniques." In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204659-ms.

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Abstract Carbonate reservoir rocks usually have complex pore systems of broad size distributions, which determine many aspects of oil exploitation, from petrophysical properties to oil/water displacements. An accurate and complete description of these pore systems remains a challenge. A single technique often gives one measurement of complicated microscopic pore space. The new techniques (i.e., micro-CT and NMR) are utilized together with conventional methods (e.g., MICP, BET) to capture a more accurate and complete picture of pore structures. MICP measures the pore throat while the NMR T2 mai
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Toumelin, E., C. Torres-Verdin, and S. Chen. "Quantification of Multi-Phase Fluid Saturations in Complex Pore Geometries From Simulations of Nuclear Magnetic Resonance Measurements." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2002. http://dx.doi.org/10.2118/77399-ms.

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Hanzawa, Daiki, Kyosuke Katsumata, and Tomio Okawa. "A Study on High Heat Flux Heat Removal With Boiling Using Porous Microchannel." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30104.

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This paper reports the critical heat flux (CHF) enhancement that was observed experimentally when a porous metal was placed in a small flow channel (hereafter, this channel is called a “porous microchannel”). In the porous microchannel, the CHF value increased almost linearly with increased values of the mass flux and the inlet subcooling. In consequence, higher cooling performance was achieved under high mass flux and high inlet subcooling conditions. It was also found that considerable fluctuation of the pressure loss frequently encountered in a small heated channel disappears in the porous
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Liu, Wei, Wenxi Zhang, Wenxuan Chen, and Guangzhi Liao. "A Method for Shortening Echo Spacing of Nuclear Magnetic Resonance Downhole Instruments." In 2024 SPWLA 65th Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2024. https://doi.org/10.30632/spwla-2024-0085.

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With the increasing development of complex oil and gas reservoirs such as shale oil, the precise characterization of their pore structure has become a key issue in shale oil exploration and development. In order to meet the exploration and development needs of “low porosity, low permeability, and tight” oil and gas reservoirs, such as shale oil reservoirs, for complex oil and gas reservoirs with strong compactness, the fluid properties of reservoir micropores are studied to determine the pore size of the fluid space. It is necessary to enhance the detection ability of underground nuclear magne
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Cinar, Yildiray, Ahmed Zayer, Naseem Dawood, and Dimitris Krinis. "A New Approach for Building Composite Cores for Corefloods in Complex Carbonate Rocks." In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204655-ms.

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Abstract Carbonate reservoir rocks are composed of complex pore structures and networks, forming a wide range of sedimentary facies. Considering this complexity, we present a novel approach for a better selection of coreflood composites. In this approach, reservoir plugs undergo a thorough filtration process by completing several lab tests before they get classified into reservoir rock types. Those tests include conventional core analysis (CCA), liquid permeability, plug computed tomography (CT), nuclear magnetic resonance (NMR), end-trim mercury injection capillary pressure (MICP), X-ray diff
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Chen, Wen An, Dai Guo Yu, Guo Liang Liu, et al. "Evaluating Complex Lacustrine Carbonate Reservoir by Integrating Advanced Logging Techniques and Core Measurements-A Case Study in Qiadam Basin." In SPE Reservoir Characterisation and Simulation Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/212607-ms.

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Abstract A complex and tight lacustrine carbonate reservoir is the main target reservoir in Qaidam Basin. The diagenesis of shallow-shore lake deposition has created a highly heterogeneous reservoir in both vertical and horizontal directions in terms of lithologies, pore structures, and permeability. The core analysis shows a wide variety of lithologies that include terrigenous clastics (quartz, orthoclase, and plagioclase), carbonate (calcite, dolomite, and ankerite), and evaporite minerals such as anhydrite, etc. Electron microscope analysis shows mainly intercrystallite pores with dolomite,
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