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4,010 results for “STABILITY”
Oxygen sensing with individual ZnO:Sb Micro-wires: Effects of temperature and light exposure on the sensitivity and stability
<p>Nanostructured ZnO has been widely investigated as a gas sensing material. Antimony is an important dopant for ZnO that catalyzes its surface reactivity and thus strengthens its gas sensing capability. However, there are little to no studies on the gas sensing of antimony-doped ZnO single wires. We fabricated and characterized ZnO/ZnO:Sb core/shell micro-wires and demonstrated that individual wires are sensitive to oxygen gas flow. Temperature and light illumination strongly affect the oxygen gas sensitivity and stability of these individual wires. It was found that these micro- and nano-wire oxygen sensors at 200˚C give the highest response to oxygen, yet a vanishingly small effect of light and temperature variations. The underlying physics and the interplay between these effects are discussed in terms of surface-adsorbed oxygen, oxygen vacancies and hydrogen doping.</p>
Fig. 2 in Long-Term Development Of Fish Assemblage In Lake Fenéki (Kis-Balaton Water Protection System, Hungary): Succession, Invasion And Stabilization
Fig. 2. Relationships between the age of Lake Fenéki and cumulative number of specimens caught in a sampling year (y = 107.7 + 9.63x; R2 = 0.654, P = 0.001)
Long term environmental stability drives reduced stress tolerance in salt lake invertebrates
<p>The capacity of species to tolerate physical stressors is critical in a world of increasing environmental instability, however, past selective environments should dramatically impact on future stress tolerance, particularly in isolated populations. Through stabilising selection, long-term environmental stasis may reduce physiological tolerance, creating an evolutionary legacy where populations are less fit if environments change. Few empirical studies have investigated this evolutionary legacy of past selection, and of particular interest whether stabilising selection in a benign environment reduces stress tolerance in natural systems. Here we use multiple populations of salt-lake invertebrates (<i>Coxiella striata, Austrochiltonia subtenuis</i>) with either stable or fluctuating environmental histories to investigate the relationship between stabilising selection and environmental stress resistance. Tolerance to both salinity and temperature stress were examined in invertebrate populations from lakes with long-term (decadal) stable environments and compared with populations from lakes with extreme salinity variations. Individuals from stable environments demonstrated significantly lower survival under both increasing salinity and temperature stresses when compared with environmentally unstable populations. Our results support the hypothesis that the evolutionary legacy from stabilising selection in constant environments leads to reduced stress tolerance. This finding demonstrates that under an increasingly variable climate, the evolutionary legacies of populations will be critical for future survival and adaptation.</p>
Digital research data from: Biochar stability in a highly weathered sandy soil under four years of continuous corn production
<p>Biochar is being considered a climate change mitigation tool by increasing soil organic carbon contents (SOC), however, questions remain concerning its longevity in soil. We applied 30,000 kg ha−1 of biochars to plots containing a Goldsboro sandy loam (Fine-loamy, siliceous, sub-active, thermic Aquic Paleudults) and then physically disked all plots. Thereafter, the plots were agronomically managed under 4 years (Y) of continuous corn (Zea Mays, L.) planting. Annually, incremental soil along with corresponding bulk density samples were collected and SOC concentrations were measured in topsoil (down to 23-cm). The biochars were produced from Lodgepole pine (Pinus contorta) chip (PC) and Poultry litter (PL) feedstocks. An untreated Goldsboro soil (0 biochar) served as a control.</p>
Climbing parrots achieve pitch stability using axial-appendicular force couples
<p class="Default">During vertical climbing, the gravitational moment tends to pitch the animal's head away from the climbing surface and this may be countered by 1) applying a correcting torque at a discrete contact point, or 2) applying opposing horizontal forces at separate contact points to produce a free moment. We tested these potential strategies in small parrots with an experimental climbing apparatus imitating the fine branches and vines of their natural habitat. The birds climbed on a vertical ladder with four instrumented rungs that measured three-dimensional force and torque, representing the first measurements of multiple contacts from a climbing bird. The parrots ascend primarily by pulling upward from the upper rung using the beak and feet. They resist the gravitational pitching moment with a free moment produced by horizontal force couples between the beak and feet during the first third of the stride and the tail and feet during the last third of the stride. The reaction torque from individual rungs did not counter, but exacerbated the gravitational pitching moment. Possible climbing limitations were explored using two different rung radii, each with low and high friction surfaces. Rung torque was limited in the large-radius, low-friction condition, however, rung condition did not significantly influence free moments produced. These findings have implications for our understanding of avian locomotor modules (i.e., coordinated actions of the head-neck, hindlimbs, and tail), the use of force couples in vertical locomotion, and the evolution of associated structures.</p>
Portfolio effect and asynchrony as drivers of stability in plant-pollinator communities along a gradient of landscape heterogeneity
<p>Understanding how pollination services can be maintained in increasingly anthropogenic landscapes is a current challenge for basic and applied ecology. The stability of plant-pollinator communities might increase in heterogeneous landscapes with a high diversity of species and alternative habitats, both through increased portfolio effect (property of communities to fluctuate less than the sum of its counterparts) and decreased synchrony (coincident changes in species abundance). However, how these drivers of stability (portfolio effect and synchrony) vary along land-use gradients remains largely unknown. Using independent samplings for plants, pollinators, and their interactions in Mediterranean communities along a gradient of landscape heterogeneity, we assessed the relationships between within-year stability and its drivers; and between the drivers of stability, landscape heterogeneity, and species diversity. Besides, we evaluated the relationships between the drivers of interaction stability and the structure of mutualistic networks (modularity, nestedness, connectance). Stability increased with larger portfolio effects and asynchronies. Interaction stability was positively related to pollinator stability, but not to plant stability. Landscape evenness increased the stability of plants, pollinators, and their interactions, through increased portfolio effects. However, for plants and pollinators, the landscape effect was detected at a smaller scale (1-km) than for interactions (2-km); and for pollinators and interactions, the effect was only evident from medium-to-high levels of landscape evenness. Temporal synchrony of species/pairwise interactions was an important driver of stability, tightly linked to species/interaction diversity. More asynchronous communities showed a larger portfolio effect and were also those with higher species evenness for all plants, pollinators, and their interactions; while synchrony was also weakly positively related to species richness for plants. Interestingly, more modular network structures conferred enhanced overall community stability, through higher portfolio effect and asynchrony. Preserving diverse communities within the heterogeneous Mediterranean landscapes helps maintain the stability of pollination services, both through increased asynchrony and portfolio effect.</p>
Supporting data for 'Stabilizing selection on Atlantic cod supergenes through a millennium of extensive exploitation'
<p>Life on earth has been characterized by recurring cycles of ecological stasis and disruption, relating biological eras to geological and climatic transitions through the history of our planet. Due to the increasing degree of ecological abruption caused by human influences many advocate that we now have entered the geological era of the Anthropocene, or 'the age of man'. Considering the ongoing mass extinction and ecosystem reshuffling observed worldwide, a better understanding of the drivers of ecological stasis will be a requisite for identifying routes of intervention and mitigation. Ecosystem stability may rely on one or a few keystone species, and the loss of such species could potentially have detrimental effects. The Atlantic cod (Gadus morhua) have historically been highly abundant and is considered a keystone species in ecosystems of the northern Atlantic Ocean. Collapses of cod stocks have been observed on both sides of the Atlantic and reported to have detrimental effects that include vast ecosystem reshuffling. By whole-genome re-sequencing we demonstrate that stabilizing selection maintains three extensive 'supergenes' in Atlantic cod, linking these genes to species persistence and ecological stasis. Genomic inference of historic effective population sizes shows continued declines for cod in the North Sea – Skagerrak – Kattegat system through the past millennia, consistent with an early onset of the marine Anthropocene through industrialization and commercialization of fisheries throughout the medieval period.</p>
Data for 'Phase Stability of Al-bearing Dense Hydrous Magnesium Silicates at Topmost Lower Mantle Condition: Implication for Water Transport in the Mantle '
<p>1 dataset for the phase diagram in Figure 2</p> <p>1 dataset for the unin-cell parameters for Figure3</p>
Thermodynamic analysis of amyloid fibril structures reveals a common framework for stability in amyloid polymorphs
<p>Supplementary data, input files and R scripts, to reproduce figures in publication.</p>
Fig. 2 in Development Stability And Cytogenetic Homeostasis Of Perca Fluviatilis (Perciformes, Percidae) In The Rivers Of Rivne Region
Fig. 2. Fluctuating Asymmetry of P. fluviatilis Bilateral Meristic Features in the Rivers of Rivne Region: P — the number of rays in the pectoral and V — pelvic fins; sp.br. — the number of gill rakers on the first gill arch; f.br.— the number of petals in branchiostegal membrane; jj — number of scales in the lateral line; jj.sk — number of scales with touch tubules; squ.1 — the number of scales' rows above and; squ.2 — under the lateral line; squ. pl — the number of scales on the side of the caudal fin.
Gut Microbial Stability is Associated with Greater Endurance Performance in Athletes Undertaking Dietary Periodization
<p>STORMS checklist for Gut Microbial Stability is Associated with Greater Endurance<br> Performance in Athletes Undertaking Dietary Periodization. An original research article in mSystems, 2022.</p>
HiPACE++ input scripts for "Self-stabilizing positron acceleration in a plasma column"
<p>This dataset presents the <a href="https://github.com/Hi-PACE/hipace">HiPACE++</a> input scripts required to re-create the data of Fig. 2 and 4 in the article "Self-stabilizing positron acceleration in a plasma column" by S. Diederichs, C. Benedetti, M. Thévenet, E. Esarey, J. Osterhoff, and C. B. Schroeder.</p>
Mode coupling bi-stability and spectral broadening in buckled carbon nanotube mechanical resonators
<p>Data availability for the Figures of the manuscript.</p>
Supplementary material 2 from: Standovár T, Horváth S, Aszalós R (2017) Temporal changes in vegetation of a virgin beech woodland remnant: stand-scale stability with intensive fine-scale dynamics governed by stand dynamic events. Nature Conservation 17: 35-56. https://doi.org/10.3897/natureconservation.17.12251
Map showing canopy trees in the study area. :
Supplementary material 1 from: Standovár T, Horváth S, Aszalós R (2017) Temporal changes in vegetation of a virgin beech woodland remnant: stand-scale stability with intensive fine-scale dynamics governed by stand dynamic events. Nature Conservation 17: 35-56. https://doi.org/10.3897/natureconservation.17.12251
Map showing the position of sampling plots in 1996 and 2013 :
CARE AND HUMANIZATION: PERSPECTIVES OF THE NURSING TEAM IN THE STABILIZATION ROOM AS PRIMARY ACTIONS
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REGULATORY AND LEGAL BASIS OF STABILIZATION OF ENERGY INDUSTRY ENTERPRISES
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Global Asymptotic Stability Control Strategy for Nonlinear Systems Using Nussbaum Gain and Backstepping
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Healthy Aging Increases the Coupling Between the Margin of Stability and Hip Moment in the Frontal Plane during Single-Stance
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WAYS TO ENSURE THE STABILITY OF THE FINANCIAL POSITION OF COMMERCIAL BANKS IN THE REPUBLIC OF TAJIKISTAN
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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.