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Dataset results
437 results for “mast”
Abies sachalinensis Mast. (BR0000009238800)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Abies mariesii Mast. (BR0000024496834)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Masting is shaped by tree-level attributes and stand structure, more than climate, in a Rocky Mountain conifer species
<p>Many tree species mast, meaning seed production is highly variable from year to year and synchronous within a stand, but this phenomenon remains poorly understood. To better understand how a changing climate, altered disturbance regimes, or novel management strategies might affect future seed production, we quantified the joint influence of both biotic (tree size, age, and neighborhood competition) and abiotic factors (climate and weather) on seed production in a widespread conifer species, Rocky Mountain ponderosa pine (<em>Pinus ponderosa</em> var. <em>scopulorum</em>). We reconstructed individual-level annual cone production across a large portion of this species' range using the cone abscission scar method, and mixed models were used to test hypotheses related to the causes and drivers of masting in this species. Our results suggest that masting in ponderosa pine is a process shaped at the individual-level, and this leads to high, local-scale variation in annual cone production. The effects of weather were strongest at climatically marginal sites, but overall, the joint effects of weather and climate only weakly described individual-level patterns of annual cone production in ponderosa pine (R<sup>2</sup><sub>m</sub> = 1.6%, R<sup>2</sup><sub>c</sub> = 30.1%). Rather, we found that masting was strongly influenced by tree- and stand-level factors such as diameter, age, and local neighborhood density, all of which were associated with the mean, interannual variability, and between-tree synchrony of cone production at the individual-level. Larger and older trees produced more cones, more frequently, and with less synchrony than smaller and younger trees. Open-grown trees experiencing lower levels of neighborhood competition also produced more cones with less interannual variability, but with higher between-tree synchrony. Because tree- and stand-level traits appear to regulate seed production more strongly than climate or weather in this species, management interventions targeting these factors could be powerful tools to manage future tree recruitment. Thus, current efforts to reduce stand density and conserve large trees in some ponderosa pine forests may enhance tree-level seed production and reduce variability in seed crops among years.</p>
Data for the paper 'Design and Implementation of a prototype infrared video bolometer (IRVB) in MAST Upgrade'
<p>Raw and processed data from the MASTU IRVB infrared camera for the calibration of the diagnostic and from the first experimental campaign.</p>
Nicotiana sanderi Mast. (BR0000012558049)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Nicotiana sanderi Mast. (BR0000024927895)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Nicotiana sanderi Mast. (BR0000012074761)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Nicotiana sanderi Mast. (BR0000010152485)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Tsuga diversifolia (Maxim.) Mast. (BR0000025056822)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Efficacy and Safety of Midostaurin in Patients With Aggressive Systemic Mastocytosis or Mast Cell Leukemia
ClinicalTrials.gov study NCT00782067. IPD Sharing: UNDECIDED. Countries: 12. Publications: 3.
Data from: Co-Mast: Harmonized seed production data for woody plants across U.S. long term research sites
Open the record for dataset details and reuse information.
Masting is shaped by tree-level attributes and stand structure, more than climate, in a Rocky Mountain conifer species
Open the record for dataset details and reuse information.
Negative temporal autocorrelation in mast seeding dynamics positively influences both the long and short-term dynamics of a wild boar population
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Reproductive data Fagus sylvatica: Widespread masting breakdown in beech
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Data from: Mast fruiting in a large tropical African legume tree provides evidence for the nutrient resource limitation hypothesis
Open the record for dataset details and reuse information.
Optimizing the Geometric Configuration and Manufacturing Process of High Mast Illumination Poles
<p>This work presents the development of a high-fidelity model that accounts for the cumulative effect of welding and hot- dip galvanizing on the determining the resulting residual stresses and deformations induced during the manufacturing process of high mast illumination poles (HMIPs). This model is meant to elucidate the root causes of weld toe cracks in HMIPs. A TxDOT pole-to-base plate connection detail was used as the reference model in the analysis. Welding was modeled using the plug-in Abaqus Welding Interface (AWI), which automatically implements a series of sequential thermal and mechanical analyses. Then, the welding stress results were used as initial input to the galvanizing analysis. The cumulative stress results were compared against simulations that only considered the galvanizing process. A parametric study was then conducted to quantify the variation in the residual stresses and equivalent plastic strain magnitudes induced during the welding and galvanizing of HMIPs due to changes in welding and galvanizing practices. The results revealed that the cumulative effects of the different processes involved in the manufacturing of HMIPs contribute to the formation of galvanizing cracks in HMIPs. Also, increasing the dipping submersion speed during galvanizing and lowering the torch temperature magnitude during welding results in fewer zones prone to cracking. Altering the angle of inclination effect did not have a significant impact on the results. Performing variations in the manufacturing practices used for the fabrication of HMIPs can contribute to reducing the extensive inspection procedures conducted post-galvanizing to identify cracks.</p>
Data from: Decadal changes in masting behaviour of oak trees with rising temperature
<p>1. Decadal changes in masting behaviour—directional changes in seed production with fluctuations on a decadal time scale—are attracting widespread attention in the context of global climate change. However, our mechanistic understanding of the effects of climate on seed production on a decadal scale is unsatisfactory, partly because of insufficient statistical analyses of long-term data on masting.</p> <p>2. We detected decadal changes in masting behaviour in the Japanese oak (<em>Quercus crispula</em>) based on long-term data (38 years: 1980–2017) from the Kitakami Mountains of Japan. The moving average of seed production in a 20-year sliding window increased, whereas the coefficient of variation decreased. A wavelet power spectrum, as well as a second-order log-linear autoregressive (AR) model, showed that masting intervals shortened from 3 or 4 years to a 2-year cycle.</p> <p>3. The moving average of seed production increased linearly as the moving average of temperature increased. Temporal variations of the two AR model coefficients as a function of temperature were well described by concave curves.</p> <p>4. Synthesis. By conducting statistical analyses of a long-term seed-production dataset, we obtained significant evidence of decadal changes in the masting behaviour of the Japanese oak and showed that shortening of the masting interval was associated with rising temperature. A resource allocation shift and an environmental veto were discussed as possible mechanisms underlying the decadal change.</p>
Data from: Mast seeding patterns are asynchronous at a continental scale
<p>Resource pulses are rare events with a short duration and high magnitude that drive the dynamics of both plant and animal populations and communities. Mast seeding is perhaps the most common type of resource pulse that occurs in terrestrial ecosystems, is characterized by the synchronous and highly variable production of seed crops by a population of perennial plants, is widespread both taxonomically and geographically, and is often associated with nutrient scarcity. The rare production of abundant seed crops (mast events) that are orders of magnitude greater than crops during low seed years leads to high reproductive success in seed consumers and has cascading impacts in ecosystems. Although it has been suggested that mast seeding is potentially synchronized at continental scales, studies are largely constrained to local areas covering tens to hundreds of kilometres. Furthermore, summer temperature, which acts as a cue for mast seeding, shows patterns at continental scales manifested as a juxtaposition of positive and negative anomalies that have been linked to irruptive movements of boreal seed-eating birds. Here, we show a breakdown in synchrony of mast seeding patterns across space, leading to asynchrony at the continental scale. In an analysis of synchrony for a transcontinental North America tree species spanning distances of greater than 5,200 km, we found that mast seeding patterns were significantly asynchronous at distances of greater than 2,000 km apart (all <i>P</i> < 0.05). Other studies have shown declines in synchrony across distance, but not asynchrony. Spatiotemporal variation in summer temperatures at the continental scale drives patterns of synchrony in mast seeding, and we anticipate that this affects the spatial dynamics of numerous seed-eating communities, from insects to small mammals to the large-scale migration patterns of boreal seed-eating birds.</p>
Crane Mast
This model was captured autonomously by Skydio 3D Scan. 3D Scan is a first-of-its-kind adaptive scanning software built on top of Skydio Autonomy. It allows the drone to automate data capture for generating 3D models with comprehensive coverage and ultra-high resolution, so that crews can perform higher quality scans in less time and with minimal pilot training. # Capture * **Platform**: Skydio 2 * **Date**: Feb 6, 2020 * **Distance**: 4 meters * **GSD**: 1.7 mm * **Overlap / Sidelap**: 80 / 70% * **Photos**: 501 * **Fly Time**: 29 min # Processing * **Package**: Bentley ContextCapture * **Computer**: Laptop w/ Quadro GPU * **Process Time**: 90 minutes [View Photos](https://drive.google.com/drive/folders/1SUlpJUwAgEsGaJwrq_WcDzvhKBTa1uY2) Source: Objaverse 1.0 / Sketchfab
Kingfisher nailed to mast
Kingfisher skin nailed to the mast of a fishing boat to bring a good catch of fish. St. Peter's Port, Guernsey, 1913. This is one of many charms in the Scarborough Museums Trust Collection collected by William James Clarke (1868-1945) former keeper of the museum. Source: Objaverse 1.0 / Sketchfab
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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)
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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.