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10,016 results for “Observation”
FIGURES 443–498 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes
FIGURES 443–498: LM micrographs. Figs 443–469. Hippodonta subelegans. Figs 470–481. Hippodonta acuta (type material). Figs 482–498. Hippodonta microcostulata. Scale bar = 10 µm.
Data from: Location of water in fresh sugarcane bagasse observed by synchrotron X-ray microtomography
Sugarcane bagasse is a vast lignocellulosic byproduct generated in the industry with ~50% humidity (1 kg dry matter associated with 1 kg water). Although the presence of water brings deleterious consequences for combustion, storage and sugar extraction, the location of water in fresh bagasse remains unknown. In this work, we use synchrotron X-ray microtomography for non-invasive 3D imaging of fresh bagasse particles, which allows the visualization of intraparticle water. The sclerified fiber cells in the sheaths surrounding xylem vessels are often found full of water. We suggest this can be juice preserved from the native stalks as many sclerified fibers seem to keep their structural integrity despite the mechanical action during sugarcane crushing. The microtomograms of fresh bagasse also shows mineral particles adhered to biomass surfaces, with adhesion presumably favored by the presence of water. In summary, this work unveils the location of water in fresh bagasse, solving an old mystery of sugarcane technology.
FIGURE 4 in The Ciidae (Coleoptera: Tenebrionoidea) of the Maritime Provinces of Canada: new records, distribution, zoogeography, and observations on beetle-fungi relationships in saproxylic environments
FIGURE 4. The Distribution of Octotemnus laevis Casey and Orthocis punctatus (Mellié) in the Maritime Provinces of Canada.
FIGURE 2 in The Ciidae (Coleoptera: Tenebrionoidea) of the Maritime Provinces of Canada: new records, distribution, zoogeography, and observations on beetle-fungi relationships in saproxylic environments
FIGURE 2. The Distribution of Cis creberrimus Mellié, Cis fuscipes Mellié, Cis levettei (Casey), and Cis subtilis Mellié, in the Maritime Provinces of Canada.
FIGURE 1 in The Ciidae (Coleoptera: Tenebrionoidea) of the Maritime Provinces of Canada: new records, distribution, zoogeography, and observations on beetle-fungi relationships in saproxylic environments
FIGURE 1. The Distribution of Ceracis sallei Mellié, Ceracis thoracicornis (Ziegler), Cis americanus Mannerheim, and Cis horridulus Casey in the Maritime Provinces of Canada.
FIGURE 3 in The Ciidae (Coleoptera: Tenebrionoidea) of the Maritime Provinces of Canada: new records, distribution, zoogeography, and observations on beetle-fungi relationships in saproxylic environments
FIGURE 3. The distribution of Cis pistoria Casey, Cis striolatus Casey, Dolichocis manitoba Dury, Hadreule elongatula (Gyllenhal), and Malacocis brevicollis (Casey) in the Maritime Provinces of Canada.
FIGURES 51–58 in Transfer of Fragilaria atomus Hust. to the genus Stauroforma (Bacillariophyta) based on observation of type and newly collected material
FIGURES 51–58. SEM: Stauroforma atomus comb. nov. BRM E2963 (lectotype). Figs 51–56. External view of valve showing headpole (white arrow) and foot-pole (black arrow). Fig. 56. Detail of curved striae with different sizes at head-pole (arrow). Fig. 57. Detail of foot-pole with the poroids of the apical pore field (arrow) and areolae containing a slightly branched structure. Fig. 58. Internal view of valve showing two poroids at foot-pole (arrow). Scale bars = 1.5 µm (Figs 51, 53–54), 1 µm (Figs 52, 55–56, 58), 500 nm (Fig. 57).
FIGURE 65 in Transfer of Fragilaria atomus Hust. to the genus Stauroforma (Bacillariophyta) based on observation of type and newly collected material
FIGURE 65. Global distribution of Stauroforma atomus as recored in Table 2 (grey star = type locality; black star = population from Brazil; black dots = all other records).
FIGURES 59–64 in Transfer of Fragilaria atomus Hust. to the genus Stauroforma (Bacillariophyta) based on observation of type and newly collected material
FIGURES 59–64. SEM: Stauroforma atomus comb. nov. from Brazil. Figs 59–60, 63–64. External view of valve showing head-pole (white arrow) and foot-pole (black arrow). Fig. 61. Detail of foot-pole with the poroids of the apical pore field (arrow) and areolae containing a slightly branched structure. Fig. 62. Detail of curved striae with different sizes at head-pole (arrow). Scale bars = 1 µm (Figs 59–60, 63–64), 0.5 µm (Figs 61–62).
FIGURES 1–50 in Transfer of Fragilaria atomus Hust. to the genus Stauroforma (Bacillariophyta) based on observation of type and newly collected material
FIGURES 1–50. LM: Stauroforma atomus comb. nov. Fig. 1. Iconotype reproduced from Hustedt (1931, fig. 672B) illustrating specimens in valve view and a pair of frustules in girdle view. Figs 2–31. Specimens BRM E2963 (lectotype). Figs 28–31. Girdle view. Figs 32–50. Specimens from Brazil. Scale bar = 5 µm.
FIGURE 4 in The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications
FIGURE 4. Graphic showing the morphological relationships (based on the number of leaves per plant) among the taxa here examined. The presence of a continuous line between two taxa evidences no statistically significant difference (Tukey HSD test, p> 0.39); the presence of a discontinuous line between I. sicula and I. tiguliana evidences a still not significant difference but with a lower p (0.11).
FIGURE 5 in The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications
FIGURE 5. Drawings of leaf bases of Isoetes longissima (A) and I. tiguliana (B), based on Italian material, showing the different size and extension of leaf alae.
FIGURE 3 in The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications
FIGURE 3. Number of leaves per plant in the examined taxa. Whiskers show the minimum and maximum values.
FIGURE 1 in The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications
FIGURE 1. SEM images of megaspores and microspores of the examined taxa, taken from herbarium specimens (see Table 2). First column: proximal view of megaspores; second column: distal view of megaspores; third column: microspores. First line = Isoetes longissima (A, B, C); second line: I. velata (D, E, F); third line: I. sicula (G, H, I); fourth line: I. tiguliana (J, K, L); fifth line: I. dubia (M, N, O). For names of taxa see also Introduction.
Data for 3 Swarm-E Fast Auroral Imager Passes Observing the ICEBEAR Radar Field of View
<p>Files containing data for 3 Swarm-E satellite passes observing the Ionospheric Continuous-wave E-region Bistatic Experimental Auroral Radar (ICEBEAR) field of view during semi-active geomagnetic conditions using the Fast Auroral Imager. The dates and times of the passes are:</p> <p>2018-03-10 05:21:00-05:26:00 UT<br> 2019-10-27 04:03:00-04:13:00 UT<br> 2020-03-19 09:00:00-09:04:00 UT</p>
Lunar heat flow constrained from Chang'E-2 Microwave Radiometer and Diviner observations at the Moon's south pole
<p>This data repository includes the Chang'E-2 microwave radiometer data which is provided by the Ground Research and Application System of Chinese Lunar Exploration Program.</p>
Cygnus A 8.45 GHz interferometric observation with Allen Telescope Array
<p>This dataset corresponds to an interferometric observation that was done in the context of the GNU Radio community activities at Allen Telescope Array. The observation was carried out using a GNU Radio FX software correlator and two USRP N32x SDR transceivers, as well as some custom code for phasing and data reduction.</p> <p>Cygnus A and some compact sources (3C84, 3C286, J2007+404) were observed over three days between 2021-07-23 and 2021-07-25 using 6 antennas from the array. The observation frequency was 8.45 GHz. Two USRP N32x were connected to the 512 MHz IF output of the RFCB LO d. Each USRP digitized the two polarizations of one antenna. This setup requires baselines to be iterated one at a time for interferometric observing. The observing bandwidth was 40.96 MHz.</p> <p>An FX correlator with 2048 channels and an integration time of 0.1 seconds was implemented in GNU Radio. The drifting correlations were then phased to each source in post processing. CASA was used for calibration and imaging.</p> <p>This post contains the following files:</p> <ul> <li>ATA-20210723.tar, ATA-20210724.tar, and ATA-20210725.tar contain the phased correlator output for each of the days in UVFITS format, reduced to a rate of 1 second and 64 channels</li> <li>CASA-masks.tar contains CLEAN masks to be used with CASA and <a href="https://github.com/daniestevez/ata_interferometry/blob/main/CASA/CygA_2020724.py">this script</a> to reproduce the whole CASA pipeline starting from the UVFITS files</li> <li>CASA-images.tar contains CLEAN images and self-calibrated CLEAN images for all of the sources in FITS format, as well as the ancialliary files produced by CASA during tclean</li> </ul> <p>The raw FX correlator output is not included in this dataset because of size constraints.</p> <p>More information about this observation and the processing pipeline can be found in the post "<a href="https://destevez.net/2021/08/imaging-cygnus-a-at-8-45-ghz-with-ata/">Imaging Cygnus A at 8.45 GHz with ATA</a>" by the author.</p>
Figure 7 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 7. Egg production of Subulina octona. (a) Mean number of eggs per reproductive event; (b) mean shell height and mean number of eggs produced.
Figure 3 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 3. Histological sections of the free-oviduct of the subulinid species Subulina octona (a,b); Allopeas gracile (c); Allopeas micra (d) and Leptinaria unilamellata (e,f). Black asterisk, oviduct lumen; white asterisk: underlying connective tissue.
Figure 4 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 4. Histological sections showing the bursa copulatrix and prostate of the subulinid species Allopeas gracile (a–c); Subulina octona (d–f); and Leptinaria unilamellata (g,h). Black asterisk, bursa copulatrix lumen; white asterisk: prostate.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.