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210 results for “field observations”
Figs 34 – 38 in The Southeast Asian Pholcus halabala species group (Araneae, Pholcidae): new data from field observations and ultrastructure
Figs 34 – 38. Pholcus lintang Huber, sp. nov., ZFMK Ar 15015. 34 – 35. Left male palp, prolateral and retrolateral views. 36. Male chelicerae, frontal view. 37 – 38. Cleared female genitalia, ventral and dorsal views. Abbreviations: a = appendix; b = genital bulb; e = embolus; p = procursus; u = uncus. Scale lines: 0.3 mm (36 – 38); 0.5 mm (34 – 35).
The Study of the Quasi-periodicity Observed on Plasma Density and Magnetic Field on Saturn's Magnetosphere: An Information Theory Approach
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FIGURE. Puccinia caulophylli on Caulophyllum robustum (A–G) and Milium effusum (H–N). A. Plants producing spermogonia and aecia on leaf surface in the field. B. Vertical section of a spermogonium. C. Vertical section of an aecia surrounded with peridia. D, E. Aecia on the leaf surface observed by SEM. F. Aeciospores with verrucose surface observed by SEM. G. Aeciospores. H. Telia on the lower leaf surface. I. Uredinia on the leaf surface observed by SEM. J. Uredinia and telia on the leaf surface. K. Vertical section of an uredinium with paraphyses. L. Urediniospore observed by SEM. M. Vertical section of telia covered by host epidermis. N. Vertical section of a telium covered by host epidermis observed by SEM. Scale bars: B, G, N = 30 μm, C, E, I = 100 μm, F, L = 10 μm, K, M = 20 μm. in Phylogenetic approach for identification and life cycles of Puccinia (Pucciniaceae) species on Poaceae from northeastern China
FIGURE. Puccinia caulophylli on Caulophyllum robustum (A–G) and Milium effusum (H–N). A. Plants producing spermogonia and aecia on leaf surface in the field. B. Vertical section of a spermogonium. C. Vertical section of an aecia surrounded with peridia. D, E. Aecia on the leaf surface observed by SEM. F. Aeciospores with verrucose surface observed by SEM. G. Aeciospores. H. Telia on the lower leaf surface. I. Uredinia on the leaf surface observed by SEM. J. Uredinia and telia on the leaf surface. K. Vertical section of an uredinium with paraphyses. L. Urediniospore observed by SEM. M. Vertical section of telia covered by host epidermis. N. Vertical section of a telium covered by host epidermis observed by SEM. Scale bars: B, G, N = 30 μm, C, E, I = 100 μm, F, L = 10 μm, K, M = 20 μm.
COSMOS Field VLBA Observations 1.4-GHz Source Catalog
This table contains the results of a project using wide-field Very Long Baseline Interferometry (VLBI) observations at 1.4 GHz of 2,865 known radio sources in the Cosmic Evolution Survey (COSMOS) field, a field which has exceptional multi-wavelength coverage. The main objective of this study is to identify the active galactic nuclei (AGN) in this field. Wide-field VLBI observations were made of all known radio sources in the COSMOS field at 1.4 GHz using the Very Long Baseline Array (VLBA). The authors also collected complementary multiwavelength information from the literature for the VLBA-detected sources.The combination of the number of sources, sensitivity, angular resolution and the area covered by this project are unprecedented. A catalog which contains the VLBI-detected sources is presented, the main purpose of which is to be used as an AGN catalog. the complementary multiwavelength (optical, infrared and X-ray) information of the VLBI-detected sources is also presented. The authors have detected 468 radio sources, expected to be AGN, with the VLBA. This is, to date, the largest sample assembled of VLBI-detected sources in the sub-mJy regime. They find a detection fraction of 20% +/- 1%, considering only those sources from the input catalog which were in principle detectable with the VLBA (2,361). As a function of the VLA flux density, the detection fraction is higher for higher flux densities, since at high flux densities a source could be detected even if the VLBI core accounts for a small percentage of the total flux density. As a function of redshift, the authors see no evolution of the detection fraction over the redshift range 0.5 < z < 3. In addition, they find that faint radio sources typically have a greater fraction of their radio luminosity in a compact core: ~70% of the sub-mJy sources detected with the VLBA have more than half of their total radio luminosity in a VLBI-scale component, whereas this is true for only ~30% of the sources that are brighter than 10 mJy. This suggests that fainter radio sources differ intrinsically from brighter ones. Across the entire sample, the authors find the predominant morphological classification of the host galaxies of the VLBA-detected sources to be early type (57%), although this varies with redshift and at z > 1.5 they find that spiral galaxies become the most prevalent (48%). The number of detections is high enough to study the faint radio population with statistically significant numbers. The authors demonstrate that wide-field VLBI observations, together with new calibration methods such as multi-source self-calibration and mosaicking, result in information which is difficult or impossible to obtain otherwise. This table contains 504 entries, including the 468 VLBA-detected sources and, for sources with multiple components, entries for the individual components. Among the detected sources, there are 452 single, 13 double, 2 triple and 1 quadruple source. Source entries have no suffix in their vlba_source_id, e.g., 'C3293', whereas component entries have a, b, c or d suffixes, e.g., 'C0090a' (and a value of 2 for the multi_cpt_flag parameter). This table was created by the HEASARC in December 2017 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/607/A132">CDS Catalog J/A+A/607/A132</a> files vlba_cat.dat and vlba_mw.dat. This is a service provided by NASA HEASARC .
HST WIDE FIELD PLANETARY CAMERA 2 OBSERVATIONS OF MARS
The Hubble Space Telescope Wide Field Planetary Camera 2 data archive contains calibrated data of Mars observed between April 27, 1999 and September 4, 2001. These are full-disk images of Mars obtained primarily through narrowband filters and in the wavelength interval of 255 to 1042 nm. The data have been calibrated to radiance factor, or I/F.
Fracture Dataset accompanying the manuscript 'Stress and Rock Failure Near Salt Bodies: Insights from Field Observations, Kinematic Modeling, and Mechanical Analysis in the Paradox Basin'
<p>This data repository supports the manuscript titled <em>"Stress and Rock Failure Near Salt Bodies: Insights from Field Observations, Kinematic Modeling, and Mechanical Analysis in the Paradox Basin,"</em> submitted to the <em>Journal of Geophysical Research: Solid Earth</em>. It contains comprehensive fracture data with location coordinates referenced in the NAD83 UTM Zone 12N system. Orientation data is reported as dip and dip azimuth, and each data point is clearly labeled to indicate whether it was derived from field measurements or point cloud analyses.</p>
Data for Field observation of Variation in Dust Emission Efficiency with Wind Speed and Temporary Properties of Farmland Soil
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OMNI Combined Heliopheric Observations (COHO), Merged Magnetic Field, Plasma and Ephermeris, Definitive Hourly Data
Hourly Averaged Definitive Multispacecraft Interplanetary ParametersData. The Heliographic Inertial, HGI, Coordinates are Sun-Centered and inertially fixed with respect to an X-Axis directed along the Intersection Line of the Ecliptic and Solar Equatorial Planes. The Solar Equatorial Plane is inclined at 7.25° from the Ecliptic. This Direction was towards Ecliptic Longitude of 74.367° on 1 January 1900 at 1200 UT but because of Precession of the Celestial Equator, this Longitude increases by 1.4° per Century. The Z-Axis is directed Perpendicular and Northward from the Solar Equator, and the Y-Axis completes the Right-Handed Set. This System differs from usual Heliographic Coordinates, e.g. Carrington Longitudes, which are fixed in the Frame of the Rotating Sun. The RTN System is fixed at a Spacecraft or a Planet. The R-Axis is directed radially away from the Sun, the T-Axis is the Cross Product of the Solar Rotation Axis and the R-Axis, and the N-Axis is the Cross Product of the R-Axis and T-Axis. At 0° Heliographic Latitude when the Spacecraft is in the Solar Equatorial Plane, the N-Axis and Solar Rotation Axis are Parallel. Latitude and Longitude Angles of Solar Wind Plasma Flow are generally measured from the Radius Vector away from the Sun. In all cases, Latitude Angles are Positive for North-Going Flow. The Flow Longitude Angles have been treated differently for the Near-Earth Data, i.e. the OMNI, and for the Deep Space Data. The Flow is Positive for the Near-Earth Data when coming from the Right Side of the Sun as viewed from the Earth, i.e. flowing toward +Y from -X GSE or Opposite to the Direction of Planetary Motion. On the other hand, the Flow Longitudes for the Deep Space Spacecraft use the opposite Sign Convection, i.e. Positive for Flow in the +T Direction in the RTN System.
HST WIDE FIELD PLANETARY CAMERA 2 OBSERVATIONS OF MARS
The Hubble Space Telescope Wide Field Planetary Camera 2 data archive contains calibrated data of Mars observed between April 27, 1999 and September 4, 2001. These are full-disk images of Mars obtained primarily through narrowband filters and in the wavelength interval of 255 to 1042 nm. The data have been calibrated to radiance factor, or I/F.
DE 1 Magnetic Field Observations Triaxial Fluxgate Magnetometer (MAG-A)
Dynamics Explorer 1 Magnetic Field Observations Triaxial Fluxgate Magnetometer at 6 second resolution.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.