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504 results for “pores”
Molecular Architecture of the Major Membrane Ring Component of the Nuclear Pore Complex
<p>This repository contains the modeling files and the analysis related to the article <a href="https://www.ncbi.nlm.nih.gov/pubmed/28162953">"Molecular Architecture of the Major Membrane Ring Component of the Nuclear Pore Complex"</a> by Upla et al. in Structure 2017.</p> <p><strong>For more information</strong> about how to reproduce this modeling, see the <a href="https://salilab.org/pom152/">Sali lab website</a> or the README file.</p>
Structure and Function of the Nuclear Pore Complex Cytoplasmic mRNA Export Platform
<p>These scripts demonstrate the use of <a href="https://integrativemodeling.org/">IMP</a>, <a href="https://salilab.org/modeller">MODELLER</a>, and <a href="https://github.com/salilab/pmi">PMI</a> in the modeling of the Nup82 complex using DSS/EDC chemical cross-links and electron microscopy (EM) 2D class averages.</p> <p>First, <a href="https://salilab.org/modeller">MODELLER</a> is used to generate initial structures for the individual components in the Nup82 complex. Then, IMP is used to model these components using DSS/EDC crosslinks and the electron microscopy 2D class averages for the entire Nup82 complex.</p> <p>The modeling protocol will work with a default build of IMP, but for most effective sampling, IMP should be built with <a href="https://integrativemodeling.org/2.5.0/doc/ref/namespaceIMP_1_1mpi.html">MPI</a> so that replica exchange can be used.</p> <p><strong>For more information</strong> about how to reproduce this modeling, see the <a href="https://salilab.org/nup82/">Sali lab website</a> or the README file.</p>
Fig. 2. Oepikellid ostracods from Palaeozoic erratic boulders. A in Sexual dimorphism and pore systems in Ordovician ostracodes
Fig. 2. Oepikellid ostracods from Palaeozoic erratic boulders. A. Holotype of the type species of the oepikellid ostracod Levisulculus, Levisulculus lineatus Jaanusson, 1957 (UM T89), female left valve, length (L) 0.89 mm. B. Holotype of Primitia extraria Öpik, 1937 (TUG 1120−1; Kukruse Stage, Estonia), tecnomorphic right valve, L 0.88 mm. C. Holotype of Primitia troedssoni Thorslund, 1940 (UM T10), tecnomorphic right valve, L 0.79 mm. D. Holotype of Primitia granulosa Thorslund, 1940 (UM T11), tecnomorphic right valve, L 0.86 mm (Jaanusson 1957: pl. 8: 12, Öpik 1937: pl. 10: 19, Thorslund 1940: pl. 1: 16, 13). E–H. Primitia elongata obliqua Steusloff, 1895: type series, all tecnomorphic valves embedded in rock. Geschiebe (glacial erratic boulder) from Neubrandenburg. E. Lectotype GG 114−27, left valve, L 1.16 mm (without velum). F. GG 114−26, right valve, L 1.07 mm. G. GG 114−28, right valve, L 0.99 mm (without velum). H. GG 114−29, right valve, L 0.82 mm. I. Primitia canaliculata Steusloff, 1895, holotype GG 114−25, steinkern of a juvenile right valve embedded in rock, L 0.70 mm, same erratic boulder.
Benthic Foraminifera Pore Patterns in the Southeast Pacific
<p>Release for paper 'A species-specific approach to benthic foraminifera pore patterns as a paleoxygenation proxy in the Southeast Pacific' submitted to Paleoceanography and Paleoclimatology (22/August/2024).</p>
Dataset: Hybrid Polarizing Solids with Extended Pore Diameters for Dissolution Dynamic Nuclear Polarization
<p>This dataset contains raw NMR, EPR, and relaxometry data, N2 adsorption-desorption isotherms for best HYPSOs, and all of the codes, used for data processing and figures in the article.</p>
Text-fig. 55. Scanning electron microscope (SEM) images of stamen fragments and pollen of Ibrahimia verminculata (a–h) and unnamed pantoporate pollen from pollen clump (i); Torres Vedras locality, Portugal. a) Holotype; stamen fragment that yielded the pollen in (b–f); b–f) Pantoporate pollen grains with vermiculate tectum and regularly spaced microechinate and pores with verrucate aperture membranes; g) Stamen fragment that yielded the pollen in (h); h) Abraded pantoporate pollen with vermiculate tectum and regularly spaced microechinate; i) Pantoporate pollen from coprolite with microreticulate-foveolate tectum and verrucate aperture membranes. Specimens, TV44-S148019 (holotype; a–f), TV44- S136782 (g, h), TV142-S170216 (i). Scale bars 300 Μm (a, g), 15 Μm (b), 6 Μm (d, e, h, i), 1.5 Μm (c, f). in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community
Text-fig. 55. Scanning electron microscope (SEM) images of stamen fragments and pollen of Ibrahimia verminculata (a–h) and unnamed pantoporate pollen from pollen clump (i); Torres Vedras locality, Portugal. a) Holotype; stamen fragment that yielded the pollen in (b–f); b–f) Pantoporate pollen grains with vermiculate tectum and regularly spaced microechinate and pores with verrucate aperture membranes; g) Stamen fragment that yielded the pollen in (h); h) Abraded pantoporate pollen with vermiculate tectum and regularly spaced microechinate; i) Pantoporate pollen from coprolite with microreticulate-foveolate tectum and verrucate aperture membranes. Specimens, TV44-S148019 (holotype; a–f), TV44- S136782 (g, h), TV142-S170216 (i). Scale bars 300 Μm (a, g), 15 Μm (b), 6 Μm (d, e, h, i), 1.5 Μm (c, f).
Text-fig. 10. Scanning electron microscope (SEM) images of conifer seeds (a, b) and pollen (c) and monoporate pollen of unknown affinity (d–j); Torres Vedras locality, Portugal. a, b) Unnamed conifer seeds (conifer seed sp. 1); c) Clump of bisaccate pollen grains; d) Fragment with microsporangia that yielded the pollen in (e–j); e, f, h) Monoporate pollen grains folded in various ways, exposing the tiny pore (e, h, arrowheads) or resembling a monocolpate grain (f); g) Detail of pollen grain showing pore (arrowhead) and finely rugulate exine surface that reflects the reticulate infratectal layer beneath the thin tectum; i) Detail of pore showing very slightly thickened margin; j) Spherical orbicules on the surface of two grains. Specimens, TV44-S174594 (a), TV44-S174595 (b), TV44-S174573 (c), TV44-S137904 (d–j). Scale bars 1 mm (a, b), 300 Μm (d), 100 Μm (c), 6 Μm (e, f, h), 3 Μm (g, j), 1.5 Μm (i). in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community
Text-fig. 10. Scanning electron microscope (SEM) images of conifer seeds (a, b) and pollen (c) and monoporate pollen of unknown affinity (d–j); Torres Vedras locality, Portugal. a, b) Unnamed conifer seeds (conifer seed sp. 1); c) Clump of bisaccate pollen grains; d) Fragment with microsporangia that yielded the pollen in (e–j); e, f, h) Monoporate pollen grains folded in various ways, exposing the tiny pore (e, h, arrowheads) or resembling a monocolpate grain (f); g) Detail of pollen grain showing pore (arrowhead) and finely rugulate exine surface that reflects the reticulate infratectal layer beneath the thin tectum; i) Detail of pore showing very slightly thickened margin; j) Spherical orbicules on the surface of two grains. Specimens, TV44-S174594 (a), TV44-S174595 (b), TV44-S174573 (c), TV44-S137904 (d–j). Scale bars 1 mm (a, b), 300 Μm (d), 100 Μm (c), 6 Μm (e, f, h), 3 Μm (g, j), 1.5 Μm (i).
Surface measurement data of polished LTCC: Characterization of pores in polished low temperature co-fired glass-ceramic composites for optimization of their micromachining
<p>Pores are intrinsic defects of ceramic composites and influence their functional properties significantly. Their characterization is therefore a pivotal task in material and process optimization. It is demonstrated that polished section analysis allows for obtaining precise information on pore size, shape, area fraction, and homogeneous distribution. It is proven that laser scanning microscopy provides accurate height maps and is thus an appropriate technique for assessing surface features. Such data is used to compare areas with good and poor polishing results, and various surface parameters are evaluated in terms of their informative value and data processing effort. The material under investigation is a low-temperature co-fired ceramic composite. Through statistical analysis of the data, the inclination angle was identified as an appropriate parameter to describe the polishing result. By using masked data, direct conclusions can be drawn about the leveling of load-bearing surface areas, which are crucial in photolithographic processing steps and bonding technology. A broad discussion of different defects based on the results contributes to a critical analysis of the potentials and obstacles of micromachining of low-temperature cofired ceramic substrates.</p>
Text-fig. 33. Synchrotron radiation X-ray tomographic microscopy (SRXTM, a, c) and scanning electron microscope (SEM, b, d) images of Paisia pantoporata (a–c) and?Paisia sp. (d); Catefica locality, Portugal. a) Lateral view (volume rendering) of flower showing the carpels (c) and the fleshy tepals (t) that have a slightly bulge near the base; b) Pollen grains in situ from stamen showing scattered pores and spiny supratectal ornamentation; c) Transverse section (orthoslice xz1024) through flower showing the pentamerous organization with five tepals (green) five stamens (yellow) and five carpels (red) all on the same radii; d) Lateral view of floral structure with three free carpels borne on the swollen receptacle that has poorly defined facets at the apex indicating the former presence of perianth parts. Specimens, Catefica 49-S101214 (a, c), Catefica 50-S170188 (b), Catefica MM125-P0292 (d). Scale bars = 300 Μm (a, c, d), 6 Μm (b). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 33. Synchrotron radiation X-ray tomographic microscopy (SRXTM, a, c) and scanning electron microscope (SEM, b, d) images of Paisia pantoporata (a–c) and?Paisia sp. (d); Catefica locality, Portugal. a) Lateral view (volume rendering) of flower showing the carpels (c) and the fleshy tepals (t) that have a slightly bulge near the base; b) Pollen grains in situ from stamen showing scattered pores and spiny supratectal ornamentation; c) Transverse section (orthoslice xz1024) through flower showing the pentamerous organization with five tepals (green) five stamens (yellow) and five carpels (red) all on the same radii; d) Lateral view of floral structure with three free carpels borne on the swollen receptacle that has poorly defined facets at the apex indicating the former presence of perianth parts. Specimens, Catefica 49-S101214 (a, c), Catefica 50-S170188 (b), Catefica MM125-P0292 (d). Scale bars = 300 Μm (a, c, d), 6 Μm (b).
Data Set: Single-well pore pressure preconditioning for Enhanced Geothermal System stimulation
<p>This is the Python code and plotted figure data used to create the figures for the submitted manuscript, "Single-well pore pressure preconditioning for Enhanced Geothermal System stimulation" submitted to JGR: Solid Earth in 2022.</p> <p>The manuscript concerns a novel technique developed for EGS stimulation, called pore pressure or effective normal stress preconditioning, which preemptively alters the stress field along a fault prior to injection, such that the risk of induced seismicity is reduced. Using a slightly altered version of a preexisting model (a combination of an analytical pore pressure model and a linear slip weakening seismicity model) the effect of this kind of treatment is evaluated.</p>
The Stability Transition from Stable to Unstable Frictional Slip with Finite Pore Pressure
<p>The datasets for Affinito et al., 2023 manuscript submitted to GRL. Each experiment is was collected on a 24-bit recorder and 16 channels for hydromechanical data. The purpose of these experiments was to document the transition from stable sliding to unstable stick-slip fricitional sliding. Experiments were done on quartz gouges, with constant pore pressure conditions. </p>
Figs 2–5 in Pre-testical spermathecal pores and unusual setal arrangement in the South African endemic microchaetid earthworms of presumed Gondwanan origin (Oligochaeta: Microchaetidae)
Figs 2–5. Habitus and enlarged clitellar area of Proandricus species: (2) P. lesothoensis, (3) P. pajori, (4) P. bourquini, (5) P. sani. Scale bars = 1 cm.
Figs 11, 12 in Pre-testical spermathecal pores and unusual setal arrangement in the South African endemic microchaetid earthworms of presumed Gondwanan origin (Oligochaeta: Microchaetidae)
Figs 11, 12. Habitus and enlarged clitellar area of Geogenia distasmosa (11) and G. quaera (12). Scale bars = 1 cm.
Fig. 1 in Pre-testical spermathecal pores and unusual setal arrangement in the South African endemic microchaetid earthworms of presumed Gondwanan origin (Oligochaeta: Microchaetidae)
Fig. 1. Geographical distribution of endemic earthworm species with irregular locations of the spermathecal pores. Abbreviations: ad – Proandricus adami, am – P. amphius, be – Geogenia benhami, bo – Proandricus bourquini, di – Geogenia distasmosa, le – Proandricus lesothoensis, mk – Geogenia mkuzi, na – G. namaensis, or – Proandricus oresbiosus, pa – P. pajori, ph – Tritogenia phinda, qu – Geogenia quaera, sa – Proandricus sani, ti – P. timmianus. South African provinces: NC – Northern Cape, FS – Free State, KZN – KwaZulu-Natal, WC – Western Cape, EC – Eastern Cape.
Figs 6–8 in Pre-testical spermathecal pores and unusual setal arrangement in the South African endemic microchaetid earthworms of presumed Gondwanan origin (Oligochaeta: Microchaetidae)
Figs 6–8. Habitus and enlarged clitellar area of Proandricus species: (6) P. adami, (7) P. amphius, (8) P. oresbiosus. Scale bars = 1 cm.
Evaluating a poroelastic model via pore pressure signals in seafloor sediments [data set]
<p>The csv files consist of pressure data collected off the coast of Camp Pendleton between 10 February 2021 and 25 February 2021, and include both pore pressure data from two instrumented surrogates and pressure data from a Nortek Signature. Timestamps are in posix time; pressure is in kPa. The time series for Surrogate A are prefixed "surrA"; those for Surrogate B are prefixed "surrB". The Nortek Signature time series is prefixed "Sig1000".</p>
Data repository for Pore Pressure Drop during Dynamic Rupture and Conditions for Dilatancy Hardening
<p>Simulation data to accompany publication Pore pressure drop during dynamic rupture and conditions for dilatancy hardening, submitted to Journal of Geophysical Research: Solid Earth. See Readme.txt for content of data files. The data were generated by 'GrandFrix' software and postprocessed by scripts written MATLAB – see Related identifiers.</p>
Pore-scale fluid dynamics resolved in pressure fluctuations at the Darcy scale
<p>Pressure data from the 5 experiments described in Spurin et al. Pore-scale fluid dynamics resolved in pressure fluctuations at the Darcy scale. <em>GRL, 2023. </em></p> <p>There are 2 data sets from the pore-scale observations with either gas or oil injected. There are 3 data sets from the core-scale observations: 1 with oil injected, and 2 with gas injected. The 2 gas experiments were conducted in the same sample, just with the flow direction reversed. </p> <p>This upload also includes the code to perform the continuous wavelet transform on the pressure data. </p>
Surface measurement data of polished LTCC: Characterization of pores in polished low temperature co-fired glass-ceramic composites for optimization of their micromachining
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Data from: Free energy analysis of peptide-induced pore formation in lipid membranes by bridging atomistic and coarse-grained simulations
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