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1,051 results for “ring”
Dust rings as a footprint of planet formation in a protoplanetary disk
<p>Simulation outputs of "Dust rings as a footprint of planet formation in a protoplanetary disk".</p> <p>average_output*.dat: azimuthally averaged surface density of gas</p> <p>average_output_dust0*.dat azimuthally averaged surface density of dust grains</p> <p>output*.dat: 2D data for gas</p> <p>output_dust0*.dat: 2D data for dust grains</p> <p>The number of the file indicates the time of output (10xnumber orbit)</p> <p>Regarding to planet0.dat and orbit0.dat, please see http://fargo.in2p3.fr/Output</p>
Images and statistical analysis of alfalfa root crowns from inside and outside disease rings caused by cotton root rot
<p>This repository contains raw image data of root crowns imaged using the backlit RhizoVision Crown platform of alfalfa plants from either inside or outside disease rings caused by cotton root rot for a manuscript to be submitted. Data files and the R scripts are included for complete statistical analysis associated with the imaged root crown set.</p> <p>Please cite both this repository and below journal article if reusing this data for a publication.</p> <p><strong>Manuscript Title:</strong> Digital imaging to evaluate root system architectural changes associated with soil biotic factors</p> <p><strong>Authors: </strong>Chakradhar Mattupalli, Anand Seethepalli, Larry M. York, Carolyn A. Young</p> <p><strong>Journal Article: </strong><a href="https://doi.org/10.1094/PBIOMES-12-18-0062-R">https://doi.org/10.1094/PBIOMES-12-18-0062-R</a> (open access)</p> <p><strong>Image Files</strong></p> <p>afalfa_roots_raw_images.zip - 264 images in PNG format directly from a monochrome camera with gamma at 3.9 to make near-segmented raw images in greyscale</p> <p>alfalfa_feature_images.zip - 264 images in PNG format with a subset of computed features overlaid</p> <p>alfalfa_segmented_images.zip - 264 black and white, binary images in PNG format that result from simple thresholding of the raw images</p> <p>I_scale_1.png - an image of a 6 inch ruler for extracting pixel to physical unit conversion</p> <p>metadata.csv - metadata output from RhizoVision Analyzer with diameter ranges and other options used for image analysis</p> <p><strong>Statistical Analysis</strong></p> <p>alfalfaCRR_features_10012018.csv - extracted features from RhizoVision Analyzer v1.0.3 - called by name in R script</p> <p>RootArchitectureFieldStudyimagetoIDmap.csv - mapping of image file names to plot identity - called by name in R script</p> <p>manuscript complete root rot RVC analysis.R - R script with all analysis that used the data from the imaged root crowns</p> <p> </p> <p> </p>
Switchable Synthesis of Natural-Product-Like Lawsones and Indenopyrazoles through Regioselective Ring-Expansion of Indantrione
<p>Lawsones and indenopyrazoles are the prevalent structural motifs and building blocks in pharmaceuticals and bioactive molecules, but their synthesis has always remained challenging as no comprehensive protocol has been outlined to date. Herein, a new metal-free, ring-expansion reaction of indantrione with diazomethanes, generated in situ from the N-tosylhydrazones, has been developed for the synthesis of lawsone and indenopyrazole derivatives in acetonitrile and alcohol solvents, respectively. It provides these valuable lawsone and pyrazole skeletons in good yields and high levels of diastereoselectivity from simple and readily available starting materials. DFT calculations were used to explore the mechanism in different solutions. The synthetic application example also showed the prospects of this method for the preparation of valuable compounds.</p>
Climate impacts on tree-ring stable isotopes across the Northern Hemispheric boreal zone
<p>First Boreal network of triple tree-ring stable isotopes from 6 conifer tree species across 24 sites in the boreal zone. Dataset is related to the article <a href="https://doi.org/10.1016/j.scitotenv.2023.161644">https://doi.org/10.1016/j.scitotenv.2023.161644</a></p>
Verhagen et al Chicxulub Upper Peak Ring SEM EPMA and Images
<p>READ ME file to be used along with data files in Zenodo for the manuscript: </p> <p><strong>Significance of Secondary Fe-Oxide and Fe-Sulfide Minerals in Upper Peak Ring Suevite from the Chicxulub Impact Structure</strong></p> <p>Christina M. Verhagen, Ji-In Jung, Sonia M. Tikoo, Axel Wittmann, David A. Kring, Stefanie Brachfeld, Laying Wu, Dale H. Burns, Sean P. S. Gulick</p> <p>Please use the latest version which is updated from the original journal submission.</p> <p>Data are organized by Figure number in the paper.</p>
Dataset for manuscript "Asymmetric ring-fault activity and alternating radial and circumferential eruptions at Wolf volcano, Galápagos Islands"
<p>The datasets are the processed interferograms presented in our manuscript, which is under review at Geophysical Research Letter (one of the journals of the American Geophysical Union, AGU).</p>
Data from: Caveolae and Bin1 form ring-shaped platforms for T-tubule initiation
<p>Excitation-contraction coupling requires a highly specialized membrane structure, the triad, composed of a plasma membrane invagination, the T-tubule, surrounded by two sarcoplasmic reticulum terminal cisternae. Although the precise mechanisms governing T-tubule biogenesis and triad formation remain largely unknown, studies have shown that <span>caveolae participate in T-tubule formation</span> and mutations of several of their constituents induce muscle weakness and myopathies. <span>Here, we demonstrate that, at the plasma membrane, caveolae composed of caveolin-3 and Bin1 assemble into ring-like structures from which emerge tubes enriched in the dihydropyridine receptor. Overexpression of Bin1 leads to the formation of both rings and tubes and we show that Bin1 forms scaffolds on which caveolae accumulate to form the initial T-tubule. Cav3 deficiency caused by either gene silencing or pathogenic mutations causes defective ring formation and perturbed Bin1-mediated tubulation that may explain defective T-tubule organization in mature muscles. Our results uncover new pathophysiological mechanisms that may prove relevant to myopathies caused by Cav3 or Bin1 variants.</span></p>
THz optical solitons from dispersion-compensated antenna-coupled planarized ring quantum cascade lasers
Quantum Cascade Lasers (QCL) constitute an intriguing opportunity for the production of on-chip optical Dissipative Kerr Solitons (DKS): self-organized optical waves which can travel while preserving their shape thanks to the interplay between Kerr effect and dispersion. Originally demonstrated in passive microresonators, DKS were recently observed in mid-IR ring QCL paving the way for their achievement even at longer wavelengths. To this end we realized defect-less THz ring QCLs featuring anomalous dispersion leveraging on a technological platform based on waveguide planarization. A concentric coupled-waveguide approach is implemented for dispersion compensation whilst a passive broadband bullseye antenna improves the device power extraction and far field. In these devices, comb spectra featuring sech2 envelopes are presented for free-running operation. This first hint of the presence of solitons is further supported by the observation of highly hysteretic behaviour and by phase-sensitive measurements which show the presence of self-starting 12 ps-long pulses in the reconstructed time profile of the emission intensity. These observations are in very good agreement with our numeric simulations based on a Complex Ginzburg-Landau equation time-domain solver. Such devices constitute a new experimental platform for the study of soliton phenomena in the THz range, allowing as well on-chip, passive ultrashort THz pulse generation appealing for a variety of applications.
Cold CAS Ion Trap - 22 pole trap with ring electrodes for astrochemistry
<p>Raw experimental data and post-processing scripts for: "Cold CAS Ion Trap – 22 pole trap with ring electrodes for<br> astrochemistry".</p> <p>DOI: 10.1080/00268976.2023.2217744</p>
Dataset: Automation of tree-ring detection and measurements using deep learning
<p>Datasets used to train and evaluate neural network-based implementation that automates detection and measurement of tree-ring boundaries from coniferous species.</p> <p>SplitTrainValDatasets files contain hand-annotated squared images of <em>Picea abies</em> core samples with over 8000 ring boundaries.</p> <p>RealWorldEvaluation.zip contains real-world core samples of 4 conifer species (<em>Picea abies</em>, <em>Abies alba</em>, <em>Pinus sylvestris</em> and <em>Larix decidua</em>) used to evaluate our application and tables with the results of these evaluations.</p> <p>Full code of the application is available at https://github.com/Gregor-Mendel-Institute/TRG-ImageProcessing/tree/master.</p> <p>More details about the datasets and the application can be found in our publication: Poláček, M., Arizpe, A., Hüther, P., Weidlich, L., Steindl, S., & Swarts, K. (2022). Automation of tree-ring detection and measurements using deep learning (p. 2022.01.10.475709). bioRxiv. <a href="https://doi.org/10.1101/2022.01.10.475709">https://doi.org/10.1101/2022.01.10.475709</a>.</p> <p> </p>
Source Data for Blinova et al., Observation of an Alice Ring in a Bose-Einstein Condensate (2023).
<p>Source data.</p>
The relation among the ring current, subauroral polarization stream, and the geospace plume: MAGE Simulation of the March 31 2001 Super Storm
<p>Open data for Figure 3 to Figure 11 in manuscript, "The relation among the ring current, subauroral polarization stream, and the geospace plume: MAGE Simulation of the March 31 2001 Super Storm".</p> <p>The data was generated by the Multiscale Atmosphere Geospace Environment model.</p> <p>The manuscript is submitted to JGR for review.</p>
Fig. 5. A in Phaeosphspirone (1/1 ), a pair of unique polyketide enantiomers with an unusual 6/5/5/6 tetracyclic ring from the desert plant endophytic fungus Phaeosphaeriaceae sp.
Fig. 5. A: Comparison of the fusarubin gene cluster fsr and phaeosphspirone gene cluster. B: Phylogenetic analysis of the phaeosphspirone gene cluster in Phaeosphaeriaceae sp.
Data set supporting publication "Hydrological Coupling and Decoupling of Hydric Hemi-boreal Forest Sites Inferred from Soil Water Models and Tree-Ring Chronology" by Kalvāns A. and Dauškane I. accepted for publication in the scientific journal Forests
<p>These files are supporting information for the article:</p> <p>Kalvāns, Daukškane (<em>accepted</em>). Hydrological Coupling and Decoupling of Hydric Hemi-boreal Forest Sites Inferred from Soil Water Models and Tree-Ring Chronology. <em>Forests</em></p> <p>The data set comprises following elements:</p> <ol> <li>Hydrus-1D soil water model setup files and calculation results ([1_Hydrus_1D_hydric_forest_soil_water_model_instances.zip]) for two study plots and 12 model instances, with following naming convention: [{Site Identifier}__{proportion of active leaf area index}_kLAI__{forced groundwater exfiltration rate cm/day}_SeepIn_const]. That is model instance named [P1__0.4_kLAI__0.05_SeepIn_const.h1d], considers the study site Plot_1, the active leafe area proportion is 0.4 and it has applied constant rate of groundwater exfiltration at the base of the soil column of 0.05 cm/day. The models are forced by E-OBS v26.0e data set for the period from 1980-01-01 to 2022-06-30.</li> <li>Black alder <em>Alnus glutinosa</em> tree ring chronologies for the two study plots ([2_tree_ring_data.zip])</li> <li>Soil and ground-water observation time series for the two study plots ([3_soil_ground_water_observations.zip])</li> </ol>
Fig. 7 in Caryophyllene sesquiterpenoids with various ring systems from the fungus Pestalotiopsis chamaeropis
Fig. 7. The Mo2(OAc)4 induced circular dichroism (ICD) spectrum of compound 3a in anhydrous DMSO with the inherent CD signals subtracted.
Fig. 8 in Caryophyllene sesquiterpenoids with various ring systems from the fungus Pestalotiopsis chamaeropis
Fig. 8. Linear correlation plots (A) and the relative errors (B) between the experimental and calculated 13C NMR chemical shifts of (6S*)-4 and (6R*)-4.
Cup and Ring Boulder - Bluebell Wood
Cup and ring marked boulder, 3000-1700 BCE with three large cup marks, surrounded by circles. From Bluebell Wood, Langside, Glasgow In the Kelvingrove Museum, Glasgow Source: Objaverse 1.0 / Sketchfab
Easter Denoon cup and ring marked stone
ScRAP ID 736 Canmore 180039. Found in 1997 at NO 34930 43900 at Easter Denoon, Angus, Scotland during construction of grain store. Now in Easter Denoon Farmhouse. 0.54 x 0.48 x 0.16 M. Source: Objaverse 1.0 / Sketchfab
Sauron's Ring
Sauron's ring from Lord Of The Rings. Source: Objaverse 1.0 / Sketchfab
Cup and ring marked stone, King's Park, Stirling
At NS 78372 92993 in Kings Park, Stirling. ScRAP Art database 1812. Canmore ID 46180. The stone has three very faint cup and ring marks. The rock is adjacent to the golf course 7 mtrs W of a memorial bench and 7 M N of tarmac track around golf course. This stone is mentioned in Neil Oliver's book 'Wisdom of the Ancients' Source: Objaverse 1.0 / Sketchfab
ScienceDex guides
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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.