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256 results for “mass effects”
Mass ratio effects underlie ecosystem responses to environmental change
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Effect of temperature on the post-diapause development rate, survival, and body mass of the solitary wasp Isodontia elegans
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Effects of seed mass on seed foraging behaviors of two sympatric rodent species
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Data associated with: Minor genetic consequences of a major mass mortality: Short-term effects in Pisaster ochraceus
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Demonstration retrievals from "Quantification of the effect of modeled lightning NO2 on UV-visible air mass factors"
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Effect of surface inhomogeneity of ion exchange membranes on the mass transfer efficiency in pulsed electric field modes
<p>Video 1: Visualization of the vortex structures at the Neosepta AMX membrane surface in the desalination channel of the electrodialysis cell in the DC mode at i = 3.0 ilimLev;</p> <p>Video 2: Visualization of the vortex structures at the Neosepta AMX membrane surface in the desalination channel of the electrodialysis cell in the PEF mode at iav = 3.0 ilimLev (f = 0.5 Hz, α = 1/2);</p> <p>Video 3: Visualization of the vortex structures at the Neosepta AMX membrane surface in the desalination channel of the electrodialysis cell in the PEF mode at iav = 3.0 ilimLev (f = 5.0 Hz, α = 1/2).</p>
Data from: Effectiveness of diagnostic screening tests in mass screening for COPD using a cooperative regional system in a region with heavy air pollution: a cross-sectional study
Objective: This research aimed to evaluate the effectiveness of a cooperative health care model for early detection and diagnosis of chronic obstructive pulmonary disease (COPD), in Omuta Japan. Methods: This was a cross-sectional observational study. We performed diagnosis of COPD at four public health centres in Omuta, Japan from March 2015 to March 2016, by adding screening for COPD at the time of routine medical evaluations. All patients over 50 years were eligible to participate. Of a total of 397 eligible patients, 293 agreed to take part in the study. Results: The estimated prevalence of COPD in Omuta was 10% among subjects over 40 years and was 17% among smokers. Out of those who were screened, over half had questionnaire scores over the cut-off of 17 points and decreased FEV1/FVC%, indicating COPD (p>0.05). Thirty subjects with suspected COPD were given a referral for further investigation at a local central hospital, but only six underwent further medical examinations. Conclusion: The combination of COPD questionnaire and medical exam was effective as a COPD screening tool. Future research should investigate behavioural interventions for smoking cessation that can be offered in a cooperative model, as well as for improving participation in COPD screening and for encouraging early presentation for treatment in those suspected of having COPD.
Data from: Trait-matching and mass effect determine the functional response of herbivore communities to land use intensification
1. Trait-based approaches represent a promising way to understand how trophic interactions shape animal communities. The approach relies on the identification of the traits that mediate the linkages between adjacent trophic levels, i.e. "trait-matching". Yet, how trait-matching explains the abundance and diversity of animal communities has been barely explored. This question may be particularly critical in the context of land use intensification, currently threatening biodiversity and associated ecosystem services. 2. We collected a large dataset on plant and grasshopper traits from communities living in 204 sampled grasslands, in an intensively managed agricultural landscape. We used a multi-trait approach to quantify the relative contributions of trait-matching and land use intensification acting at both local and landscape scales on grasshopper functional diversity. We considered two key independent functional traits: incisor strength and body size of grasshopper species. Incisor strength, a resource-acquisition trait, strongly matches grasshopper feeding niche. Body size correlates with mobility traits, and may determine grasshopper dispersal abilities. 3. Plant functional diversity positively impacted the diversity of grasshopper resource-acquisition trait, according to the trait-matching observed between plants and herbivores. However, this positive effect was significantly higher in old grasslands. In addition, the presence of specific habitats in the landscape (i.e. wood and alfalfa) strongly enhanced grasshopper resource-acquisition trait diversity in the focal grassland. Finally, body size increased with landscape simplification, although its response was modulated by local factors such as soil depth. 4. Trait-matching between plants and herbivores was an important driver explaining the abundance and diversity of resource-acquisition traits within grasshopper communities. Herbivore functional diversity in grasslands, however, cannot be understood without taking into account the presence of specific habitats in the surrounding landscape, as well as the age of the grassland. Our study suggests mass effect and assembly time are central mechanisms promoting higher functional diversity within animal communities in highly disturbed anthropogenic system.
Source-specific Mass Absorption Efficiencies of Char-EC and Soot-EC Improve Accuracy in Black Carbon Radiative Effect Estimation
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Probing fossil magnetic field effects in the core of evolved low-mass stars using mixed-mode frequencies
<p>The recent discovery of the moderate differential rotation between the core and the envelope of intermediate-mass (IM) main-sequence and evolved stars, and the population of IM red giants presenting a surprisingly low-amplitude of their mixed modes (i.e. modes that behave as acoustic modes in their external envelope and as gravity modes in their core) could both be the signature of a strong magnetic field trapped inside the radiative regions of IM stars. Indeed, stars more massive than 1.1 solar mass are known to develop a convective core during their main sequence. The field generated by the dynamo triggered by this convection could be the progenitor of a strong fossil magnetic field trapped inside the core of the star for the rest of its evolution. In this context, the mixed modes observed thanks to space-based asteroseismology can constitute an excellent probe of the deepest layers in IM evolved stars: such magnetic fields may impact their propagation inside the core of these stars, and these perturbations should be visible in asteroseismic data. To unravel which constraints can be obtained from these observations, we theoretically investigate the effects of a plausible mixed magnetic field with various amplitudes on the mixed-mode frequencies of red giants. Applying a perturbative method, we estimate the magnetic splitting of the frequencies of simulated mixed dipolar modes that depends on the magnetic field strength and its configuration. A complete asymptotic analysis is derived, showing the potential of asteroseismology to probe the magnetism at each depth as this is done for stellar rotation. The effects of the mass and the metallicity of the stars are also explored. Finally, we infer an upper limit for the strength of the field and the associated lower limit for the timescale of its action to redistribute angular momentum in stellar interiors.</p>
Data from: A longitudinal analysis of the growth rate and mass of tail feathers in a great tit population: ontogeny, genetic effects and relationship between traits
<p class="MsoNoSpacing">Feathers have a diversity of functions in birds and are costly to produce, so their growth rate and mass can be reliable indicators of nutritional condition at the time of production. Despite the potential for feather metrics to advance our understanding of foraging, they are underused in avian ecology. One reason for this is the difficulty of interpreting whether individual variation is driven by ontogenetic, genetic, or environmental effects, which is exacerbated by the fact that most analyses have been done on cross-sectional data. We addressed this deficit using a longitudinal dataset of tail feathers collected from Great tits <em>Parus major</em> to test for ontogenetic and genetic effects on growth rate, mass and length, while controlling for body/feather size differences and other confounding factors. First, we found that the type of moult episode and experimentally-induced replacement differentially affected the length, mass and growth of feathers, providing evidence of an ontogenetic effect that should be considered when comparing these feather traits across individuals as a measure of condition. Second, we detected moderate to high repeatability and heritability values from parent-offspring regression for these three feather traits, which are suggestive of an underlying genetic component of variation. Third, we used a mean centring within-individual approach to test whether feather growth rate and feather mass (length-corrected) are indeed positively correlated with each other as overlapping indicators of body condition in birds, and found that this association, although positive, is weak and only significant between individuals. This suggests that both metrics are not so intimately linked as originally thought, and probably have different sensitivities to variation in foraging performance and ecological conditions. Together with the higher plasticity of feather growth rate compared to feather mass, our results support the idea that feather growth rate is better suited for examining short-term responses to environmental variation.</p>
Effects of Rotationally Induced Mixing in Compact Binary Systems with Low-mass Secondaries and in Single Solar-type Stars
<p>MESA inlists associated with <a href="https://ui.adsabs.harvard.edu/#abs/2012ApJ...755...95C/abstract">Chatzopoulos et al. (2012)</a>. MESA version 3647.</p> <p>Publication DOI: <a href="https://www.doi.org/10.1088/0004-637X/755/2/95">10.1088/0004-637X/755/2/95</a></p>
A Study to Evaluate the Effect of Venglustat Tablets on Left Ventricular Mass Index in Male and Female Adult Participants With Fabry Disease
ClinicalTrials.gov study NCT05280548. IPD Sharing: YES. Countries: 19. Publications: 0.
Effects of Anorexia Nervosa on Peak Bone Mass
ClinicalTrials.gov study NCT01301183. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Romosozumab Effects on Bone Density, Muscle Mass, and Spine Surgery Outcomes
ClinicalTrials.gov study NCT06973109. IPD Sharing: YES. Countries: 1. Publications: 0.
Effect of LIK066 on Body Weight in Patients With Elevated Body Mass Index
ClinicalTrials.gov study NCT02470403. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Effects of Creatine Supplementation on Muscle Mass and Function Among Older Women Subjected to Resistance Training
ClinicalTrials.gov study NCT02188849. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Effect of Age, Body Mass Index and Tumor Sidedness in Metastatic Colorectal Cancer
ClinicalTrials.gov study NCT04543019. IPD Sharing: Not stated. Countries: 0. Publications: 12.
Effect Study of Marine Protein Hydrolysates to Prevent Loss of Muscle Mass and Physical Function in Frail Elderly
ClinicalTrials.gov study NCT02890290. IPD Sharing: NO. Countries: 0. Publications: 5.
Effects of Medical High Protein Nutrition on the Muscle Mass in Adult ICU Patients
ClinicalTrials.gov study NCT06168136. IPD Sharing: NO. Countries: 0. Publications: 8.
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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.