Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
12,871
datasets available to search
ShareScore release 0.9.0
Dataset results
12,871 results for “aging;”
Fourier-transformed infrared (FTIR) spectra of the paper "Untangling the role of biotic and abiotic ageing of various environmental plastics toward the sorption of metals"
<p>The dataset include Fourier-transformed infrared (FTIR) spectra of UV aged and biofouled environmental plastics, used for the publication "Untangling the role of biotic and abiotic ageing of various environmental plastics toward the sorption of metals" (the paper is available at the following link: <a href="https://doi.org/10.1016/j.scitotenv.2023.164807">https://doi.org/10.1016/j.scitotenv.2023.164807</a>).</p> <p>The dataset is organized as follows:</p> <p>-All samples contains metadata considering polymer type (polylactic acid (PLA), polypropylene (PP), and polyethylene (PE)), the type of ageing treatment (UV ageing, biofouling and UV ageing-biofouling), the amount of time (in hours) of treatment and the number of replicate sample analyzed.</p> <p>-for every sample the raw data (scaled for the maximum absorbance value) of the FT-IR spectrum is given.</p> <p>Further experimental details are listed in the manuscript text.</p>
Colonial coral resilience by decreasing size: reaction to increased detrital influx during onset of the late Palaeozoic Ice Age
<p><span>Modern coral reefs and associated biodiversity are severely threatened by increasing terrestrial runoff. Similar scenarios could be suspected for geological times, but reef coral resilience is still an enigma. In late Visean</span><span>-</span><span>Serpukhovian (Mississippian foraminiferal zones/MFZ 14-16) times, a major glaciation phase of the late Palaeozoic Ice Age (LPIA) associated with enhanced terrestrial weathering and runoff coincides with a biodiversity crisis and coral reef decline. In this study, the impact of enhanced terrestrial runoff is tested on size variations of colonial corals <em>Aulina rotiformis</em> and <em>Lithostrotion decipiens</em> along a gradient of contemporaneous (Serpukhovian) open marine carbonate to nearshore siliciclastic facies in South China. Along this gradient, their sizes decrease from carbonate, through intermediate carbonate-siliciclastic, to siliciclastic facies. This is consistent with increasing abundance of terrestrial materials of high silicon, aluminium, and phosphorus values. On a larger million</span><span>-</span><span>year</span><span>-</span><span>long interval (MFZ14-16) and for several palaeocontinents, size data of <em>Lithostrotion decipiens</em> and <em>Siphonodendron pauciradiale</em> show a distinct decline in late Visean, when enhanced terrestrial weathering occurred commonly with palaeosols developed during regression. This suggests that terrestrial sediment and nutrient input may have mainly controlled phenotypic plasticity in Mississippian reef corals, with a decrease in size as a component of resilience across the LPIA onset.</span></p>
Figure 6 in Metal-Age Maritime Culture at Jareng Bori Rockshelter, Pantar Island, Eastern Indonesia
Figure 6. Mollusc habitats (NISP) at Jareng Bori.
Figure 15 in Metal-Age Maritime Culture at Jareng Bori Rockshelter, Pantar Island, Eastern Indonesia
Figure 15. Ferrous metal artefact cf. knife from Jareng Bori.
Figure 5 in Metal-Age Maritime Culture at Jareng Bori Rockshelter, Pantar Island, Eastern Indonesia
Figure 5. Major mollusc taxa (NISP) at Jareng Bori.
Figure 12 in Metal-Age Maritime Culture at Jareng Bori Rockshelter, Pantar Island, Eastern Indonesia
Figure 12. Slipped sherds by spit at Jareng Bori.
Figure 11 in Metal-Age Maritime Culture at Jareng Bori Rockshelter, Pantar Island, Eastern Indonesia
Figure 11. Average sherd thickness (mm) by spit at Jareng Bori.
Figure 9 in Metal-Age Maritime Culture at Jareng Bori Rockshelter, Pantar Island, Eastern Indonesia
Figure 9. Vertical distribution of ceramics from Jareng Bori for sherds over 1 g.
Social network and fitness data from age-structured populations of forked fungus beetles
<p>We investigated the relationships between age, social behavior, and fitness at three levels of organization: the individual, the local social environment, and the population. Replicate groups of forked fungus beetles (<em>Bolitotherus cornutus</em>) were engineered to have either young- or old- biased age structures, and both social and reproductive behaviors were recorded.</p>
Proteomics analysis for: The platelet transcriptome and proteome in Alzheimer's disease and aging: an exploratory cross-sectional study
<p>Alzheimer’s disease (AD) and aging are associated with platelet hyperactivity. However, the mechanisms underlying abnormal platelet function in AD and aging are yet poorly understood. To explore the molecular profile of AD and aged platelets, we investigated platelet activation (i.e., CD62P expression), proteome and transcriptome in AD patients, non-demented elderly, and young individuals as controls. AD, aged and young individuals showed similar levels of platelet activation based on CD62P expression. However, AD and aged individuals had a proteomic signature suggestive of increased platelet activation compared with young controls. Transcriptomic profiling suggested the dysregulation proteolytic machinery involved in the regulation of platelet function, particularly in the ubiquitin-proteasome system in AD and autophagy in aging. The functional implication of these transcriptomic alterations remains unclear and requires further investigations. </p>
Absolute time markers and age-depth model for the last 75 kyr of Lake Chala sediments
<p>The 171 time markers include 162 <sup>14</sup>C ages on bulk organic matter or grass charcoal in sediment intervals of the composite Challacea (CH03, CH05) sequence (Blaauw et al., 2011), transferred to the DeepCHALLA (DCH) composite sequence using mm- or cm-scale cross-correlation of visual lithostratigraphy (Baxter et al., 2023). The other nine time markers are six <sup>210</sup>Pb-dated intervals from gravity core CH99-1G transferred to the CH05 and DCH sequences using 1-cm resolution magnetic-susceptibility profiles (Blaauw et al., 2011), the November 2016 (DCH) and March 2005 (CH05) sediment-water interfaces, and the YTT cryptotephra (Baxter et al., 2023). Lab codes stand for the Poznan Radiocarbon Laboratory (Poz-), the Chrono Centre at Queen’s University in Belfast (UBA-), the Isotope Physics Laboratory at the University of Groningen (GrA-), the Saint-Croix Watershed Research Station of the Science Museum of Minnesota (SMM), and the Cambridge Tephra Laboratory (CT-). ‘Offset’ refers to the old-carbon age offset of bulk organic <sup>14</sup>C dates, modelled using 16 paired dates on bulk organic matter and grass charcoal and three sections allowing <sup>14</sup>C wiggle-match dating using closely spaced bulk organic samples (Blaauw et al., 2011). The compound error on corrected <sup>14</sup>C ages was calculated as SQRT ((Age Error)^2 + (Offset STD)^2). All dated intervals are represented by their DCH event-free depth in meter (mefd). </p>
454-sequence data of Iron Age cattle from Althiburos – Tunisia
<p>The Maghreb is a key region for understanding the dynamics of cattle dispersal and admixture with local aurochs following their earliest domestication in the Fertile Crescent more than 10,000 years ago. Here, we present data on mitochondrial <em>D-loop</em> sequences obtained for 12 archaeological specimens of Iron Age (~2,800 cal BP–2,000 cal BP) domestic cattle from the Eastern Maghreb, i.e. Althiburos (El Kef, Tunisia). Maternal lineages were assigned to the elusive R and ubiquitous African-T1 haplogroups found in two and ten Althiburos specimens, respectively. Our results corroborate the introgression of aurochs females into the domestic stock of cattle from Althiburos. </p>
UV-spectrophotometry dataset of technical lignin in solution after aging and looped measurements
<p>UV-spectrophotometry data of technical lignin samples in solutions is made available here, which was acquired after ambient aging for up to 110 days in DMSO solvent or looped measurements on fresh solutions in DMSO or 0.2N NaOH in water. UV-spectrophotometry of lignin is a useful technique, as it can a) quantify the concentration and purity of lignin in a given sample, b) determine the abundance of phenolic hydroxyl groups, and c) yield qualitative information about chemical modification of the lignin macromolecule. In addition, the technique is rapid and easy to use. Still, solutions of lignin are known to be unstable; in particular at high pH or in presence of UV-light. The data in this article may hence serve as guide in the experimental conduct and design, as it shows the reproducibility of UV-spectrophotometry measurements of lignin.</p>
Age specific impacts of vegetation functional traits on gastro-intestinal nematode parasite burdens in a large herbivore
<ol> <li>Gastro-intestinal nematode (GIN) parasites play an important role in the ecological dynamics of many animal populations. Recent studies suggest fine-scale spatial variation in GIN infection dynamics is important in wildlife systems, but the environmental drivers underlying this variation remain poorly understood.</li> <li>We used data from over two decades of GIN parasite egg counts, host space use, and spatial vegetation data from a long-term study of Soay sheep on St Kilda to test how spatial autocorrelation and vegetation in an individual's home range predict parasite burden across three age groups. We developed a novel approach to quantify the plant functional traits present in a home range to describe the quality of vegetation present. </li> <li>Effects of space and vegetation varied between age classes. In immature lambs, strongyle parasite faecal egg counts (FEC) were spatially structured, being highest in the north and south of our study area. Independent of host body weight and spatial autocorrelation, plant functional traits predicted parasite egg counts. Higher egg counts were associated with more digestible and preferred plant functional traits, suggesting the association could be driven by host density and habitat preference.</li> <li>In contrast, we found no evidence that parasite FEC were related to plant functional traits in the host home range in yearlings or adult sheep. Adult FEC were spatially structured, with highest burdens in the north-east of our study area, while yearling FEC showed no evidence of spatial structuring.</li> <li>Our findings support the importance of fine-scale environmental variation for wildlife disease ecology and provide new evidence that such effects may vary across demographic groups within a population. Parasite burdens in immature individuals appear more readily influenced by fine-scale spatial variation in the environment, highlighting the importance of such heterogeneity for our understanding of wildlife epidemiology and health.</li> </ol>
Data from: Plasma proteomic signatures of enteric permeability among hospitalized and community children under two years of age in Kenya and Pakistan
<p class="MsoNormal">We aimed to establish if enteric permeability was associated with similar biological processes in children recovering from hospitalization and relatively healthy children in the community. Extreme gradient-boosted models predicting the lactulose rhamnose ratio, a biomarker of enteric permeability, using 7,500 plasma proteins and 34 fecal biomarkers of enteric infection among 89 hospitalized and 60 community children aged 2-23 months were built. The R<sup>2</sup> were calculated in test sets. The models performed better among community (R<sup>2</sup>: 0·27 [min-max: 0·19, 0·53]) than hospitalized children (R<sup>2</sup>: 0·07 [min-max: 0·03, 0·11]). In the community, LRR was associated with biomarkers of humoral antimicrobial and cellular lipopolysaccharide responses, and inversely associated with anti-inflammatory and innate immunological responses. Among hospitalized children, the selected biomarkers had few shared functions.<strong> </strong>This suggests enteric permeability among community children was associated with a host response to pathogens, but this association was not observed among hospitalized children.</p>
Delayed formation of neural representations of space in aged mice - Dataset
<p><strong>In vivo two-photon imaging dataset for McDermott et al. "Delayed formation of neural representations of space in aged mice"</strong></p> <p>This dataset contains imaging data consisting of calcium traces for every active cell and the position of the mouse on the treadmill. The data consists of two NumPy (.npy) data files for each mouse and imaging session:</p> <p><strong>fluorescence.npy </strong>contains raw fluorescence data (the F output of Suite2p data extraction). Rows are individual cells and columns are frames (i.e. timepoints) acquired at 15.253 Hz.</p> <p><strong>positions.npy </strong>contains the position of the mouse on the treadmill belt indexed from 0 to 100.</p> <p>Both files are the output of the Preprocessing_Aging.py code, part of the analysis pipeline used for data analysis in the original publication, which can be found at <a href="https://github.com/GoncalvesLab/McDermott-et-al-Aging">https://github.com/GoncalvesLab/McDermott-et-al-Aging</a> </p> <p>Due to their large size, raw calcium imaging movies were not uploaded but are available upon request.</p> <p>Please refer to the original publication McDermott et al., Aging Cell (2023) for additional information.</p> <p>All imaged mice were female. The ages of individual mice are as follows:</p> <table> <tbody> <tr> <td>Group</td> <td>Mouse</td> <td>Age at Imaging (Months)</td> </tr> <tr> <td>Aged</td> <td>3</td> <td>21-22</td> </tr> <tr> <td>Aged</td> <td>4</td> <td>21-22</td> </tr> <tr> <td>Aged</td> <td>6</td> <td>22</td> </tr> <tr> <td>Aged</td> <td>7</td> <td>22</td> </tr> <tr> <td>Aged</td> <td>8</td> <td>22</td> </tr> <tr> <td>Young</td> <td>2</td> <td>3</td> </tr> <tr> <td>Young</td> <td>3</td> <td>3</td> </tr> <tr> <td>Young</td> <td>5</td> <td>3</td> </tr> <tr> <td>Young</td> <td>6</td> <td>4</td> </tr> <tr> <td>Aged</td> <td>1</td> <td>26</td> </tr> <tr> <td>Aged</td> <td>2</td> <td>25</td> </tr> <tr> <td>Aged</td> <td>3</td> <td>25</td> </tr> <tr> <td>Young</td> <td>1</td> <td>4</td> </tr> <tr> <td>Young</td> <td>2</td> <td>4</td> </tr> <tr> <td>Young</td> <td>4</td> <td>4</td> </tr> <tr> <td>Young</td> <td>1</td> <td>4</td> </tr> <tr> <td>Young</td> <td>2</td> <td>4</td> </tr> </tbody> </table> <p> </p>
Data for: Age and an obesogenic diet affect mouse behaviour in a sex-dependent manner
<p>Obesity is rising globally and is associated with neurodevelopmental and psychiatric disorders among children, adolescents, and young adults. Whether obesity is the cause or the consequence of these disorders remains unclear. To examine the behavioural effects of obesity systematically, locomotion, anxiety, and social behaviour were assessed in male and female C57Bl/6J mice using the open field, elevated plus maze and social preference task. First, the effects of age and sex were examined in control mice, before investigating post-weaning consumption of a high fat, high sugar diet commonly consumed in human populations with high rates of obesity. In the open field and elevated plus maze, locomotor activity and anxiety-related behaviours reduced with aging in both sexes, but with different sex-specific profiles. The high fat, high sugar diet reduced food and calorie intake and increased body mass and fat deposition in both sexes. In the open field, both male and female mice on the obesogenic diet showed reduced locomotion, whereas, in the elevated plus maze, only females on the obesogenic diet displayed reduced anxiety-related behaviours. Both male and female mice on the obesogenic diet had a significantly higher social preference index than controls. In conclusion, the findings demonstrate that the behavioural effects of age and of diet-induced obesity all depend on the sex of the mouse. This emphasises the importance of considering the age of the animal and including both sexes when assessing behavioural phenotypes arising from dietary manipulations.</p>
Appendix for the paper "Assessment of Aging and Rejuvenation for Resiliency in Heterogeneous Network Clusters"
<p><strong>Appendix for the paper "Alberto Avritzer, Andrea Janes, Andrea Marin, Andre van Hoorn, Matteo Camilli, Catia Trubiani, Daniel S. Menasché: Assessment of Aging and Rejuvenation for Resiliency in Heterogeneous Network Clusters"</strong></p> <p>This repository contains the complete set of charts for all core machines (in the paper, figures 3-8 contain only the results of one machine) and the collected data for each strategy.</p> <p><strong>Contents</strong></p> <p>The files contained in this appendix are:</p> <ul> <li>18 files of the format "experiment(strategy)(granularity).pdf, where "strategy" goes from -1 to 4 and granularity is one of i, dc, or dp (see table I in the paper).</li> <li>18 files of the format "output-(strategy)(granularity).csv, with the same format as the files above, containing the raw data.</li> </ul>
Emergence age and ecological characteristics of gregarious dinosaurs
<p>All raw data of "Emergence age and ecological characteristics of gregarious dinosaurs". The species name (identified name) was obtained from a meta-analysis performed in this study. The database used for data collection is "The Paleobiology Database" (https://paleobiodb.org/).</p> <p> </p>
Data from: Forest age drives saproxylic beetle biodiversity in the southeastern United States
<p><strong>Data from: Forest age drives saproxylic beetle biodiversity in the southeastern United States </strong></p> <p>Clayton R. Traylor, Michael D. Ulyshen, Joseph V. McHugh</p> <p><em>Biological Conservation </em>285: 110238.</p> <p><a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.biocon.2023.110238" target="_blank" rel="noreferrer noopener"><span>https://doi.org/10.1016/j.biocon.2023.110238</span></a></p> <p> </p> <p>Abstract from paper:</p> <p>Old forests are valuable for biodiversity conservation because they provide uninterrupted forest cover over time<br>and late-successional habitat, promoting low-mobility and late-successional species. However, forest age may be<br>less important in highly forested landscapes because dispersal limitation is reduced. We investigated how species<br>richness and community composition of saproxylic beetles (Coleoptera) are influenced by forest age and the surrounding<br>landscape in the southeastern United States (Georgia). Forests in this region are highly fragmented and<br>dominated by early-successional stands. We sampled beetles in 20 old forests (mature in 1938) and 20 young<br>forests (originating after 1938), located along a landscape forest cover (LFC) gradient. Old and young forests<br>were structurally similar but tree communities differed along a Quercus (old) to Pinus (young) gradient. Regional<br>diversity of saproxylic beetles was higher in old forests, and high species turnover between forest age groups suggests<br>they both help to maintain regional biodiversity. Two models of local richness had near equal merit: one<br>showed higher richness in old forests regardless of LFC, while the other showed higher richness in old forests at<br>high LFC. Contrary to expectations, neither model supports old forests losing importance in highly forested landscapes.<br>Higher richness in old forests is likely due to temporal stability and late-successional habitat, promoting<br>low-mobility and specialist species. Because the land area of young forests exceeds that of old forests, old forests<br>are disproportionately important for saproxylic biodiversity in the region.</p>
ScienceDex guides
Understand access before you commit
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.