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33,754 results for “Enhancers”
Raw Data for the article: Usefulness of longitudinal systolic strain and delayed enhancement cardiac magnetic resonance in depicting risk of supraventricular arrythmias in patients with acute myocarditis and preserved left ventricular function
<p><strong>Background: </strong>Myocarditis have variable clinical presentation, evolution and prognosis. Aim of our study was to evaluate the value of speckle tracking echocardiography and cardiac magnetic resonance (CMR) in the short-term prediction of supraventricular arrhythmias (SVA) in patients with acute myocarditis.</p> <p><strong>Methods: </strong>Seventy patients (mean age 31±14 years old) with acute myocarditis and preserved left ventricular ejection fraction (LVEF) were enrolled. Longitudinal systolic strain (LS) of the left ventricle (LV), mechanical dispersion (MD) and CMR with quantitative measurement of delayed enhancement (DE) were performed in a subset of 43 patients. Logistic regression and ROC analysis were used to identify predictors of SVA RESULTS: Only LS measured at sup-epicardial, mid-wall and sub-endocardial level of the apical 4-chamber view was significantly lower in patients with SVA, while MD was marginally prolonged in this setting. A value of LS > - 16.1% measured at LV mid-wall in the apical 4-chamber view (ROC-AUC .75, Sensitivity 63%, Specificity 85%) was the most accurate measure to identify patients with SVA. DE mass was also helpful with a ROC-AUC .76; a DE-Mass > 18.9 gr. had a Sensitivity 63% and a Specificity 77%, to identify patients at risk of SVA.</p> <p><strong>Conclusions: </strong>Both DE mass and LS were associated with higher risk of SVA in patients with acute myocarditis and preserved LVEF. However, LS measured at the mid-wall level and limited to LV segments included in the apical 4-chamber view was the most accurate measure and did not show interaction with DE mass.</p>
Enhanced durability of round bamboo treated with copper naphthenate under heat-cold impregnation
<p><span>Round bamboo has aroused much interest in construction for its mechanical properties, but poor </span><span>biological durability</span><span> seriously restricts its application. </span><span>In order</span><span> to</span><span> develop </span><span>a suitable and effective </span><span>preservative treatment </span><span>method for round bamboo</span><span>, </span><span>copper naphthenate (CuN)</span><span> was adopted and </span><span>impregnate</span><span>d</span><span> into round bamboo</span><span> using</span><span> heat-cold procedure. The distribution and retention of copper naphthenate in round bamboo</span><span> were studied</span><span>,</span><span> and the </span><span>biological durability</span><span> represented by the </span><span>mold and decay resistance were </span><span>investigated</span><span>. The results showed that </span><span>the </span><span>retention and fixation of copper </span><span>reached</span><span> 0.39 </span><span>kg/m<sup>3</sup> and 85.3%, respectively. </span><span>Scanning electron microscopy</span><span>-energy dispersive x-ray spectrometry further disclosed an increasing trend in the composition of CuN from the end inward. </span><span>X-ray photoelectron spectroscopy and </span><span>Fourier transform infrared spectroscopy analyses later revealed that CuN could be fixed on bamboo in the form of a hydrogen bond or a complex reaction. Statistical analysis showed that the increasing concentration of CuN </span><span>from </span><span>0.3%</span><span> to</span><span> 0.5% and 0.8%</span><span> (</span><span>calculated as Cu<sup>2+</sup> content) has a significant contribution against T<em>rametes versicolor</em> and <em>Gloeophyllum trabeum</em> in comparison with the untreated bamboo. </span><span>Meanwhile, when the concentration of treating solution increased to 0.8 wt.%, the resisting efficacy for </span><em><span>Aspergillus</span><span> niger</span></em><span>, </span><em><span>Penicillium citrinum,</span></em><span> and </span><em><span>Trichoderma viride</span></em> <span>soar</span><span>ed</span><span> as high as 85.9%, 94.8%, and 70.3%</span><span>,</span> <span>respectively</span><span>.</span></p>
Optimal Mowing Regime in Enhancing Biodiversity in Seasonal Floodplains along Engineered Channels, Survey data
<p>This is the survey dataset used in the publication " Optimal Mowing Regime in Enhancing Biodiversity in Seasonal Floodplains along Engineered Channels".</p>
Dissipation-enhanced collapse singularity of a nonlocal fluid of light in a hot atomic vapor
<p>This repository contains the data presented in the manuscript titled " Dissipation-enhanced collapse singularity of a nonlocal fluid of light in a hot atomic vapor " by P.Azam et al., Phys. Rev. A <strong>104</strong>, 013515 – Published 15 July 2021</p> <p>The .zip file contains a folder for each figure, a folder ("mesures") with the full dataset and analyzed measured and a code .mat to plot fig 1,2,3,6.</p> <p>Codes to plot fig 4 and 5 are in respective folders.</p>
Effectiveness of Softening Agents for Enhancing Properties of Asphalt Mixes with High RAP Contents
<p>A high percentage of reclaimed asphalt pavement (RAP) in new asphalt concrete can lead to developing premature failure of asphalt pavements due to fatigue or low-temperature cracking. The use of softening agents in asphalt binders can resolve these problems. The aim of this study is to evaluate the effectiveness of softening agents for enhancing the properties of asphalt mixes with high RAP contents. Two waste products, namely, waste cooking oil (WCO), and engine bottom oil (EBO) along with a commercially produced rejuvenator were investigated in this study. The following three types of Performance Grade (PG) binders, each collected from two different sources, were considered in this study: PG 64-22, PG 70-22, and PG 76-22. These PG binders blended with different amounts (0, 15, 25, 40, and 60%) of RAP binders were rejuvenated with different dosages (0, 10, 15, and 20%) of the selected softening agents. Empirical tests (e.g., penetration and pH), Superpave tests, Atomic Force Microscope (AFM), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and limited laboratory and field performance of asphalt mixture samples were also evaluated. It was found that the rejuvenators reduced the viscosity of the binder samples. The results showed that the rejuvenated binders reduce the production temperatures as well as the brittleness of the hard binders. The AFM results showed that modulus and deformation values of rejuvenated binders were significantly less than those of their unrejuvenated counterparts. Similarly, distinct peaks were observed in the FTIR peaks due to the rejuvenation. The findings of this study will help pavement professionals in selecting suitable rejuvenators in the construction of pavements with high RAP contents.</p>
Residual force enhancement is reduced in permeabilized fiber bundles from mdm muscles
<p>Residual force enhancement (RFE) is the increase in steady-state force after active stretch relative to the force after isometric contraction at the same final length. The mdm mutation in mice, characterized by a small deletion in N2A titin, has been proposed to prevent N2A titin-actin interactions so that active mdm muscles are more compliant than WT. This decrease in active muscle stiffness should be associated with reduced RFE. We investigated RFE in permeabilized soleus (SOL) and extensor digitorum longus (EDL) fiber bundles from wild type and mdm mice. On each fiber bundle, we performed active and passive stretch from an average sarcomere length of 2.6 - 3.0 &[mu]m at a slow rate of 0.04 &[mu]m/s, as well as isometric contractions at the initial and final lengths. One-way ANOVA showed that SOL and EDL fiber bundles from mdm mice exhibited significantly lower RFE than WT (P < 0.0001). This result is consistent with previous observations in single myofibrils and intact muscles. However, it contradicts the results from a previous study which appeared to show that compensatory mechanisms could restore titin force enhancement in single fibers from mdm psoas. We suggest that force enhancement measured previously in mdm single fibers was an artifact of the high variability in passive tension found in degenerating fibers, which begins after ~24 days of age. The results are consistent with the hypothesis that RFE is reduced in mdm skeletal muscles due to impaired Ca2+ dependent titin-actin interactions resulting from the small deletion in N2A titin.</p>
Presentation scripts of "Predictability awareness rather than mere predictability enhances the perceptual benefits for targets in auditory rhythms over targets following temporal cues"
<p>These are the presentation scripts accompanying the publication </p> <p>"Predictability awareness rather than mere predictability enhances the perceptual benefits for targets in auditory rhythms over targets following temporal cues". </p> <p>Check the readMe for an instruction.</p>
Infection by dsRNA viruses is associated with enhanced sporulation efficiency in Saccharoymces cerevisiae
<p>Upon starvation, diploid cells of the facultative sexual yeast <em>Saccharoymces cerevisiae</em> undergo sporulation, forming four metabolically quiescent and robust haploid spores encased in a degradable ascus. All endosymbionts, whether they provide net benefits or costs, utilise host resources; in yeast, this should induce an earlier onset of sporulation. Here, we tested whether the presence of endosymbiotic dsRNA viruses (M satellite and L-A helper) correspond with higher sporulation rate of their host, <em>S. cerevisiae</em>. We find that <em>S. cerevisiae</em> hosting both the M and L-A viruses (so-called "killer yeasts") have significantly higher sporulation efficiency than those without. We also found that the removal of the M virus did not reduce sporulation frequency, possibly because the L-A virus still utilises host resources with and without the M virus. Our findings indicate that either virulent resource use by endosymbionts induces sporulation, or that viruses are spread more frequently to sporulating strains. Further exploration is required to distinguish cause from effect.</p>
Functional miscibility and thermomechanical properties enhancement of substituted phthalic acetylated modified chitin filler in biopolymer composite
<p>The miscibility between hydrophobic and hydrophilic biopolymers has been of significant challenge. This study used a novel simplified chitin modification method to produce phthalic - chitin using phthalic anhydride in a substitution reaction. The FT-IR functional group analysis was used to confirm the substitution reaction. The modified chitin was used as compatibiliser in PLA/starch biocomposite to enhance its properties. The biocomposite was prepared using melt extrusion and compression moulding technique. The biocomposite's morphological, thermomechanical, and water absorption properties were characterised using scanning electron microscope, tensile test, dynamic mechanical analysis, thermogravimetry analysis, differential scanning calorimetry, thickness swelling, and water absorption test. The FT-IR study shows a successful substitution reaction of the amine hydrogen ion present in the chitin as opposed to substituting the hydrogen ion in the hydroxide group. The tensile and impact properties of biocomposite incorporated with modified chitin showed better results compared with other samples. The SEM images showed uniform miscibility of the modified biocomposite. The dynamic mechanical analysis showed improved modulus value with the incorporation of modified chitin. The thermal properties showed improved thermal stability of the modified biocomposite. Furthermore, the percentage of water absorbed by biocomposite with modified chitin is reduced compared to the PLA/starch biocomposite. The produced biodegradable ternary blend can be used as a substitute for plastics in industrial applications.</p>
Stimulus presentation can enhance spiking irregularity across subcortical and cortical regions
<p>Stimulus presentation is believed to quench neural response variability as measured by fano-factor (FF). However, the relative contribution of within-trial spike irregularity and trial-to-trial rate variability to FF reduction has remained elusive. Here, we introduce a principled approach for accurate estimation of spiking irregularity and rate variability in time for doubly stochastic point processes. Consistent with previous evidence, analysis showed stimulus-induced reduction in rate variability across multiple cortical and subcortical areas. However, unlike what was previously thought, spiking irregularity, was not constant in time and could be enhanced partly due factors beyond local CV measures such as bursting abating the quench in the post-stimulus FF. Simulations confirmed plausibility of a time varying spiking irregularity arising from within and between pool correlations of excitatory and inhibitory neural inputs. By accurate parsing of neural variability, our approach reveals previously unnoticed changes in neural response variability and constrains candidate mechanisms that give rise to observed rate variability and spiking irregularity within brain regions.</p>
Structural anther mimics improve reproductive success through dishonest signalling that enhances both attraction and the morphological fit of pollinators with flowers
<p><span>Numerous studies have identified traits associated with anther mimicry, however, the processes underlying floral deception remains poorly documented for these structures. We studied the importance of pollinator attraction and mechanical fit of anther mimics in <em>Tritonia laxifolia</em> (Iridaceae) and their relative contributions to reproductive success. To determine anther mimics role in pollinator attraction, we offered bees' binary choices to flowers painted with UV absorbent and reflecting paint. We also conducted preference experiments between flowers with excised anther mimics and unmanipulated controls, from which mechanical fit was assessed by allowing single visits. Anther mimics effects on female reproductive success was determined using similar treatments, but on rooted plants. Bees preferred UV absorbent over UV reflecting anther mimics. Bees did not discriminate between flowers with and without three-dimensional anther mimics. Single visits resulted in more pollen deposition on unmanipulated controls over flowers with their anther mimics excised, which was directly linked to pollen-collecting behaviour. Controls with unmanipulated anther mimics had higher seed set than those with their anther mimics excised. This study provides insights into pollinator-mediated selection on deceptive floral signals and shows that three-dimensional anther mimics increases reproductive success through both attraction and pollen-collecting behaviours.</span></p>
Enhanced oxidation of SO2 by H2O2 during haze events: constraints from sulfur isotopes
<p>Sulfate aerosols play a critical role in atmospheric chemistry and climate change. However, the mechanism of sulfate formation during haze events remains highly uncertain. In this work, sulfur isotopic compositions of SO<sub>2</sub> and sulfate in PM<sub>2.5</sub> samples collected in Tianjin, China as well as a Rayleigh distillation model are used to constrain SO<sub>2</sub> oxidation pathways. Here, we show the sulfur isotopic compositions of SO<sub>2</sub> and sulfate as well as concentrations of major ions in PM2.5. Our results show that a large sulfur isotope fractionation between SO<sub>2</sub> and sulfate observed in the first stage of haze events may be attributed to an enhanced oxidation of SO<sub>2</sub> by H<sub>2</sub>O<sub>2</sub>. This study highlights the important role of SO<sub>2</sub> oxidation by H<sub>2</sub>O<sub>2</sub> during the haze events. In addition, it is particularly important to note that the sulfur isotopic fractionation factors during haze events dispaly a distinct trend to other periods, indicating that this isotopic approach is useful in understanding the sulfate formation during haze events.</p>
Does Hamiltonian Replica Exchange via lambda-hopping enhance the sampling in alchemical binding free energy calculations?
<p>t-REM HREM lamba-hopping/FEP+ tests on the APA molecule with ORAC<br> (www.chim.unifi.it/orac) </p> <p>The untarred archive contains the following directories: </p> <p>t-rem -> contains input for gas-phase tests<br> st-hrem -> contains input for solvated APA with solute tempering<br> lam-hop -> contains input for solvated APA with lambda-hopping<br> bin -> scripts for REM analysis <br> lib -> APA starting conf and potential parameters for the runs </p> <p>see also README files inside each dir for further details </p>
Transient amplification enhances the persistence of tropicalising coral assemblages in marginal high latitude environments
<p>Predicting the viability of species exposed to increasing climatic stress requires an appreciation for the mechanisms underpinning the success or failure of marginal populations. Rather than traditional metrics of long-term population performance, here we illustrate that short-term (<em>i.e.</em>, transient) demographic characteristics, including measures of resistance, recovery, and compensation, are fundamental in the poleward range expansion of hard corals, facilitating the establishment of coral populations at higher latitudes. Through the annual census of tropical and subtropical <em>Acropora</em> spp. colonies in Japan between 2017-2019, we show how enhanced transient amplification (<em>i.e.</em>, short-term increases in population growth following disturbance) supports the persistence of coral assemblages within more variable high-latitude environments. The transient dynamics of both the tropical and subtropical assemblages were strongly influenced by their corresponding recruitment patterns. However, we demonstrate that variation in colony survival and fragmentation patterns between the two assemblages determines their relative capacities for transient amplification. This latitudinal variation in the transient dynamics of <em>Acropora</em> spp. assemblages emphasises that coral populations can possess the demographic plasticity necessary for exploiting more variable, marginal conditions.</p>
Supporting Information for "Wave heating during the helium flash and lithium-enhanced clump stars"
<p>"data" contains the data used to generate the plots in this paper.</p> <p>"batches" contains a log of nearly every MESA run performed in this work (including ~all failed experiments). These are stored as Python3 Pickle files. Experiments were run using the RemoteExperiments software package (https://github.com/adamjermyn/remote_experiments). See the documentation there for further information on the data format for these files.</p> <p>"Stokes_Experiments" contains a git repository which includes both the final version of the code used in our canonical run as well as the full history of (nearly) all experiments we performed along the way. Each experiment is a commit (detached from any branch) with the commit message "patch".</p> <p>"Scripts" contains both the scripts we used to run these experiments and those we used to analyze them and make the plots in the paper.</p> <p>Further detail is given in the paper itself.</p>
Polyploidization-enhanced effective clonal reproduction endows the successful invasion of Solidago canadensis
Clonality and ploidy levels are positively associated with plant invasiveness. However, there is still no consensus on whether polyploidization can promote the invasion of alien plants by enhancing clonality. Our recent long-term community succession study found that the more vigorous clone of introduced polyploid Solidago canadensis succeeded into mono-dominant community, which seems to be a positive correlationship between polyploidization and clonal reproduction. However, how polyploidization improves the clonal reproduction of S. canadensis remains unknown. Here, we compared clonal growth ability among diploids and polyploids of S. canadensis from native and introduced ranges in a common garden. Results showed that the rhizomes of S. canadensis originated from axillary buds of dense nodes at the basal stem of seedling and then produced into clonal ramets. Diploids had denser nodes and more buds, developed more rhizomes per unit mass and produced more clonal propagules at the early growth stage compared with polyploids. However, the number of juvenile and secondary rhizomes, as well as the diameter and length of rhizomes in polyploid populations was significant higher than those of diploids, and those clonal traits in introduced polyploids were significant higher than in native polyploids. Moreover, a phalanx growth form was observed in native and introduced diploid populations, which allocated about 3% and 5% of the total biomass to rhizomes, respectively, resulting in short and weak rhizomes. However, native and introduced polyploids allocated about 35% and 40%, respectively, of the total biomass to rhizomes, resulting in long and strong rhizomes, which were guerrilla growth forms. This study firstly shows that polyploidization enhanced the effective clonal reproduction of S. canadensis through pre-adaptation and rapid post-adaptation evolution, and consequently contributed to its successful invasion.
Correlative Raman Imaging and Scanning Electron Microscopy: The Role of Single Ga Islands in Surface-Enhanced Raman Spectroscopy of Graphene_experimental dataset
<p>This dataset contains the raw unprocessed data for Piastek et al., Correlative Raman Imaging and Scanning Electron Microscopy: The Role of Single Ga Islands in Surface-Enhanced Raman Spectroscopy of Graphene, <em>J. Phys. Chem. C</em> 2022, 126, 9, 4508–4514. </p>
WAIS model for "Antarctic Peninsula warming triggers enhanced basal melt rates throughout West Antarctica"
<p>This data set contains the code and input files for WAIS-1080 model, which is based on the Massachusetts Institute of Technology general circulation model (MITgcm), including dynamic/thermodynamic sea-ice model and sub-ice-shelf cavity model for freezing/melting processes.</p> <p>code_was.tar contains source files for compiling model;</p> <p>init.tar and input.tar contain run-time parameter files and binary files for running model</p> <p> </p> <p> </p>
Datasets for the publication " Enhancing drought resilience and energy security through complementing hydro by offshore wind power - the case of Brazil"
<p>This repository contains the datasets for the publication "Enhancing drought resilience and energy security through complementing hydro by offshore wind power - the case of Brazil".</p> <ul> <li><strong>Bias correction</strong></li> <li>Technical data of existing farms (ABBEólica) </li> <li>Bias correction factors at the farm level</li> </ul> <p> </p> <ul> <li><strong>Demand</strong></li> <li>Simulated wind and solar power</li> <li>Biomass, nuclear, and small hydropower generation in 2019</li> <li>Raw demand data</li> <li>Updated demand </li> </ul> <p> </p> <ul> <li><strong>Hydropower time series</strong></li> <li>Affluent Natural energy of run-of-rivers (fio d'água, in Portuguese) and reservoirs (reservatórios, in Portuguese), installed capacity, and maximal storage</li> </ul> <p> </p> <ul> <li><strong>Offshore wind farms</strong></li> <li>Locations, coordinates, water depth, available areas, water depth, distance to shore, technology,and maximal capacity;</li> <li>Code to estimate offshore wind farm capex and opex.</li> </ul> <p> </p> <ul> <li><strong>Results of Calliope model </strong></li> <li>capacity</li> <li>carrier_prod (power generation)</li> <li>storage</li> <li>costs</li> <li>emissions</li> </ul> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p>
Cryptogam plant community stability: warming weakens influences of species richness but enhances effects of evenness
<p>Community stability is a fundamental factor sustaining ecosystem functioning and is affected by species richness and species evenness. The Arctic is warming more rapidly than other biomes, and cryptogam plant species (specifically lichens and bryophytes in this study) are major contributors to tundra biodiversity and productivity. However, to our knowledge, the impacts of warming on cryptogam community stability and the underlying mechanisms have not been investigated. We conducted a 13-year summer warming experiment in mesic birch hummock tundra vegetation near Daring Lake in the continental interior of low Arctic Canada, and recorded patterns of cryptogam species abundance in several different growing seasons. Warming decreased the stability of total community abundance, had no effects on species richness, but increased species evenness and species synchrony. Structural equation model analyses indicated that higher species richness was the principal factor associated with the stronger community abundance stability in the control plots, and that this effect was driven primarily by a negative correlation with species synchrony. By contrast, higher species evenness was the principal factor associated with the weakened community abundance stability in the warming plots, and this effect was driven primarily by a positive correlation with species synchrony. Our study suggests that climate warming could reduce cryptogam plant community stability in low Arctic tundra, and therefore decrease important ecosystem services including carbon storage and food availability to caribou in northern regions.</p>
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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.