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11,837 results for “Stress;”
POLQ mediates replication-stress induced structural variant formation throughout common fragile sites during mitosis
<p>Larger processed svCapture data files related to the linked publication. Two types of files are provided:</p> <p>1) Data packages, ending in .mdi.package.zip = processed data files that can be loaded by the svCapture Shiny app, or otherwise extracted to explore the contents.</p> <p>2) App bookmarks, ending in .mdi = saved state of the app with stored configurations from which figures were plotted.</p>
Smell the stress: Subjective ratings of body odors reliably indicate stress levels
<p><strong><span>Background:</span></strong><span> Chemosensory signals like body odor carry information about the emotional state of individuals like fear or stress. Analysis of sweat odor could therefore deliver an easy option of assessing stress. Our aim was to examine if subjective odor ratings can reliably and validly capture characteristics of sweat odor. For this we presented odor samples of stressed individuals to naïve participants who rated these concerning their intensity, valence, and stress. Furthermore, we compared odor rating results to well-studied physiological markers of stress that we obtained from the odor donors during the stress task.</span></p> <p><strong><span>Method:</span></strong><span> Odor donors were 30 men and 30 women who performed a standardized protocol to induce social stress while wearing axillary pads under each armpit. Additionally, we measured <span> </span><span> </span>cortisol in saliva, adrenaline in blood and recorded participants’ heart rate. For odor ratings, we recruited an independent sample of 40 individuals. Participants rated the odor samples using visual analog scales.</span></p> <p><strong><span>Results:</span></strong><span> Intraclass correlations revealed a fair level of clinical significance for intensity and valence of sweat odors. Additionally, retest reliability was moderate for these two odor qualities. Ratings of stress also showed a moderate retest reliability, but the intraclass correlation was on a poor level. In further analyses we found significant relationships between all three qualities. Correlations between subjective ratings of body odors and physiological stress markers of odor donors were not significant. </span></p> <p><strong><span>Discussion: </span></strong><span>Our data show that<strong> </strong>subjective ratings of body odor qualities, in particular intensity and valence are reliable. Further research on validity is needed.</span></p>
Residual stress in steel benchmark determined by synchrotron X-ray and neutron diffraction
<p>The data presented is the residual stress, determined by synchrotron X-ray diffraction (SXRD) at DESY operated by Hereo (P07 and P61A) and neutron diffraction (ND) at ILL(SALSA). The data is for two benchmark samples having the same geometry (U shape) that can be measured by diffraction techniques and adapted to other material systems to validate RS measurements. One of them was elastically loaded while the other had stresses generated by plastic deformation, while having the same geometry. </p> <p>The U-flexure sample flexure-compression(FC), flexure-tension(FT_ and flexure-neutral(FN) were electrical discharge machine from a rolled plate. The U-bend(B) sample was obtained by three-point bending a cuboidal blank. The thicknes of the machine part is close to 10 mm and runs parallel to the z-direction. The measurement line runs from the centre of the top surface near the bend (defined at the origin) down into the bend (positive z-direction). The FN samples acted as stress-free reference for the U-flexures and a pin extracted from the bend was used for the U-bend. For the U-flexures, a finite element analysis (FEA) model was developed to account for the slight variations in loading conditions observed in the samples used for ND and SXRD. The results of the FEA model is also presented for comparison.</p> <p>The gauge volume sizes and shapes were dependent on the technique and research facility. The gauge volumes were: a) P07 – 0.2 x 0.2 x ~2.0 mm<sup>3 </sup>(b) P61A- 0.15 x 0.15 x ~3.4 µm<sup>3 </sup>(c) SALSA- 0.6 x 0.6 x 2 mm<sup>3</sup>. </p>
Borehole observation, in-situ stress and breakout simulation datasets for BS34 in the Xinchang site, Beishan region
<p>Two datasets are available here as supplementary materials for the study of borehole breakout development.</p> <p>For the dataset 'Borehole Data.zip', it contains the natural fractures, breakouts, and drilling-induced tensile fractues, and mini-frac test results obtained from borehole BS34 in the Xinchang site, Beishan region. For the dataset 'Simulation Data.zip', it includes the simulated stress evolution associated with breakout development in the vicinity of a pre-existing frature, and simulated breakout geometry using a finite element model.</p>
AE_stress-rotation_data
<p>Data for submitted paper: Laboratory acoustic emissions reveal stress rotation from preparation processes toward fault slip on varying surface roughness in granular materials</p>
Data from: Hyperspectral imaging reveals differential carotenoid and chlorophyll temporal dynamics and spatial patterns in Scots pine under water stress
<p>Data and codes associated with the manuscript '<span>Hyperspectral imaging reveals differential carotenoid and chlorophyll temporal dynamics and spatial patterns in Scots pine under water stress</span>'. </p>
Dataset for article "Prediction of thermal shock induced cracking in multi-material ceramics using a stress-energy criterion" published in Engineering Fracture Mechanics
<p>Dataset contains graphical outputs of the numerical analysis performed using Finite element method in finite elements software Ansys Mechanical. It contains also photoes of the tested specimens. Further, material data used for the numerical analysis and measured by authors are included in the csv file and all necessary input codes for the FE system Ansys creating data for graphs in the publication are provided in the subfolder "Models-Ansys" within "Data" directory.</p> <p> </p>
Data from: Stressful city sounds: glucocorticoid responses to experimental traffic noise are environmentally dependent
A major challenge in urban ecology is to identify the environmental factors responsible for phenotypic differences between urban and rural individuals. However, the intercorrelation between the factors that characterise urban environments, combined with a lack of experimental manipulations of these factors in both urban and rural areas, hinder efforts to identify which aspects of urban environments are responsible for phenotypic differences. Among the factors modified by urbanisation, anthropogenic sound, particularly traffic noise, is especially detrimental to animals. The mechanisms by which anthropogenic sound affects animals are unclear, but one potential mechanism is through changes in glucocorticoid hormone levels. We exposed adult house wrens, Troglodytes aedon, to either traffic noise or pink noise. We found that urban wrens had higher initial (pre-restraint) corticosterone than rural wrens before treatment, and that traffic noise elevated initial corticosterone of rural, but not urban, wrens. By contrast, restraint stress-induced corticosterone was not affected by noise treatment. Our results indicate that traffic noise specifically contributes to determining the glucocorticoid phenotype, and suggest that glucocorticoids are a mechanism by which anthropogenic sound causes phenotypic differences between urban and rural animals.
Analysis code and quantification for publication "The stress-sensing domain of activated IRE1α forms helical filaments in narrow ER membrane tubes"
<p>Analysis code and input/output files for all quantifications performed for publication entitled "The stress-sensing domain of activated IRE1α forms helical filaments in narrow ER membrane tubes." </p> <p>All questions on the analyses or code can be directed to han@walterlab.ucsf.edu</p>
Stress amelioration response of glycine betaine and Arbuscular mycorrhizal fungi in sorghum under Cr toxicity
<p>In search of the solution to Cr toxicity a two-year pot experiment (completely randomized design with three replications), in three genetically different varieties of sorghum (SSG 59-3, HJ 513 and HJ 541) under Cr toxicity (2 and 4 ppm) was conducted to determine the effect of glycine betaine (50 and 100mM) and <i>Arbuscular mycorrhizal fungi</i> (AMF) on the antioxidant system (enzymes <i>viz.</i> superoxide dismutase, ascorbate peroxidase, catalase, glutathione reductase, peroxidase and metabolites <i>viz.</i> glutathione, ascorbate, proline, β-carotene) along with Cr accumulation and indices of oxidative stress parameters (polyphenol oxidase, hydrogen peroxide and malondialdehyde) at two growth stages (vegetative and grain filling). According to results; Cr stress (2 & 4 ppm) increased its accumulation and indices of oxidative stresses significantly (<i>p≤0.05</i>) in all varieties of sorghum at both growth stages. However, soil application of glycine betaine (GB) and AMF decreased Cr accumulation and indices of oxidative stress by increasing antioxidant enzymes and metabolites activities at both growth stages in all varieties. The combination of 100mM GB with AMF was observed most significant (<i>p≤0.05</i>) in decreasing oxidative stress and improved the antioxidant system's activities. The SSG 59-3 cultivar showed the lowest Cr accumulation indices of oxidative stress and highest antioxidant system's activity among these three cultivars at both growth stages. Thus, SSG 59-3 was found most tolerant cultivars followed by HJ 513 and then HJ 541. These findings suggest that both GB and AMF, either individually or combined can play a positive role to reduce oxidative stress and increased antioxidant attributes under Cr toxicity in sorghum.</p>
On farm field experiments testing TOMRES rootstocks under water stress
<p>This experiment aims to test EDYPRO biostimulants on farm applicatioin. The commercial variety Elpida F1 was either treated with biostimulants or not and cultivated under 2 water/nutritional regimens (standard water/nutrient supply vs 20% irrigation reduction/no nutrient supply).</p>
Screening of tomato lines under combined stress in generative stage
<ol> <li>Identification of lines with superior performance under combined stress</li> <li>same as (i)</li> <li>Three individual trials, 2018 - 2019</li> <li><em>S. lycopersicum; S. pennellii; S. lycopersicum x S. pennellii</em></li> <li>Greenhouse @ University of Bonn (50.62 N 6.99 E)</li> <li>Growing plants in rockwool slabs with drip irrigation (as commercial practise); stressed plants received modified nutrient solution and only 50 % water</li> <li>General drop in fruit yield and quality under stress conditions; Performance of tested lines (eg water use efficiency) differ significantly.</li> <li>(viii) in progress</li> </ol> <p>(ix) to be discussed</p>
Effects of treatment by synthetic strigolactone (SL) on WUE and NUE in two tomato varieties under normal and combined-stress conditions
<p>The present work aims to analyse the influence of strigolactones (SL) on WUE and NUE under combined stress (drought and phosphate deprivation) in two tomato TOMRES varieties. One variety was chosen because it was found to be less sensitive to nitrogen starvation (# 250) by UNA, while the other (# 270) is more or less as sensitive as the wild type used in previous experiments (M82).</p>
On farm field experiments testing TOMRES rootstocks under water stress (Season 2019-2020)
<p>This experiment aims to test EDYPRO biostimulants on farm application. The commercial variety Elpida F1 was either treated with biostimulants or not and cultivated under 2 water/nutritional regimens (standard water/nutrient supply vs 20% irrigation reduction/no nutrient supply).</p>
On farm field experiments testing TOMRES rootstocks under water stress
<p>This experiment aims to test two of the most performing Tomres used as rootstocks in the commercial variety (Elpida F1) cultivated in the region. More specifically, 2 tomato Tomres lines (TOMRES- 149, Bil-6191 and TOMRES 162, M82) x 2 water/nutritional regimens (standard water/nutrient supply vs 20% irrigation reduction/no nutrient supply). Greenhouse will also have non grafted plants on Armstrong rootstock cultivated under standard water/nutrient supply and 20% irrigation reduction/no nutrient supply</p>
Performance of best ranking accessions of the TOMRES collection under combined stress in Northern European glasshouse conditions.
<ol> <li>to investigate the performance of three best ranking accessions as identified in previous STC work under combined water and nutrient stress tolerance and to compare it to performance of a commonly used commercial variety.</li> <li>to validate best performing TOMRES accessions under combined stresses.</li> <li>the trial took place in 2020.</li> <li><em>Solanum Lycopersicon</em> (syn. <em>Lycopersicon esculentum</em>) accessions TOMRES 27, TOMRES 43, TOMRES 271 and commercial variety ‘Piccolo’. </li> <li>Stockbridge Technology Centre, Stockbridge House, Cawood, YO8 3TZ.</li> <li>data was collected on four replicates of two treatments (UK commercial conditions and combined reduced water and nutrients) on a range of agronomic performance indicators and physiological plant responses as well as harvest assessments and post-harvest plant tissue analysis. </li> <li>data not yet analysed. </li> <li>complete.</li> <li>data not yet analysed.</li> </ol>
Screening of tomato lines under combined stress in generative stage
<ol> <li>Identification of lines with superior performance under combined stress</li> <li> same as (1)</li> <li>Three individual trials, 2018 - 2019</li> <li><em>S. lycopersicum; S. pennellii; S. lycopersicum x S. pennellii</em></li> <li>Greenhouse @ University of Bonn (50.62 N 6.99 E)</li> <li> Growing plants in rockwool slabs with drip irrigation (as commercial practise); stressed plants received modified nutrient solution and only 50 % water</li> <li> General drop in fruit yield and quality under stress conditions; Performance of tested lines (eg water use efficiency) differ significantly.</li> <li> in progress</li> <li>to be discussed</li> </ol>
Influence of temperature and salinity on the cellular stress response and energy reserves of Hediste diversicolor.
<p>Raw data on survival rates, wet weight, cellular stress response, oxidative stress and energy reserves of the ragworm Hediste diversicolor collected at Ria de Aveiro (Portugal) and subjected to a combination of different temperatures (24, 27 and 30 ºC) and salinities (20 and 30) over time (14 and 28 days). The biomarkers analysed include: heat shock protein 70 kDa, total ubiquitin, catalase, superoxide dismutase, glutathione-S-transferase, total antioxidant capacity, lipid peroxidation, glucose, glycogen, total protein and total lipids.</p>
Interactive effects of ZnO nanoparticles and temperature on molecular and cellular stress responses of the blue mussel Mytilus edulis
<p>We investigate the molecular and cellular stress responses of tissues (gills and digestive glands) in the mussels <em>Mytilus edulis </em>exposed for 21 days to either ambient (10 °C in winter and 15 °C in summer) or elevated (by 5 °C) temperature combined with different concentrations (0, 10, 100 µg l<sup>-1</sup>) of ZnO nanoparticles or dissolved zinc. In this data set, we used a biomarker-based approach focusing on oxidative stress indicators ( lipid peroxidation and protein carbonyls) and transcription pattern of marker genes in the pathways related to cell survival and proliferation (caspase 3, Bcl-2, p53, p38 and JNK) and inflammation (COX, NF-κB, and TGF-β) of <em>M. edulis</em>. </p>
Data from: Genome-wide variation in DNA methylation is associated with stress resilience and plumage brightness in a wild bird
Individuals often differ in their ability to cope with challenging environmental and social conditions. Evidence from model systems suggests that patterns of DNA methylation are associated with variation in coping ability. These associations could arise directly if methylation plays a role in controlling the physiological response to stressors by, among other things, regulating the release of glucocorticoids in response to challenges. Alternatively, the association could arise indirectly if methylation and resilience have a common cause, such as early life conditions. In either case, methylation might act as a biomarker for coping ability. At present, however, relatively little is known about whether variation in methylation is associated with organismal performance and resilience under natural conditions. We studied genome-wide patterns of DNA methylation in free-living female tree swallows (Tachycineta bicolor) using methylated DNA immunoprecipitation (MeDIP) and a tree swallow genome that was assembled for this study. We identified areas of the genome that were differentially methylated with respect to social signal expression (breast brightness) and physiological traits (ability to terminate the glucocorticoid stress response through negative feedback). We also asked whether methylation predicted resilience to a subsequent experimentally imposed challenge. Individuals with brighter breast plumage and higher stress resilience had lower methylation at differentially methylated regions across the genome. Thus, widespread differences in methylation predicted both social signal expression and the response to future challenges under natural conditions. These results have implications for predicting individual differences in resilience, and for understanding the mechanistic basis of resilience and its environmental and social mediators.
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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.