Find research datasets worth reusing

opencc-by-4.0Jul 2021View details →

Data from: Evaluating the strength of western honey bees (Apis mellifera L.) colonies fed pollen subsitutes over winter

We fed managed honey bee colonies one of two commercially available pollen substitutes (MegaBee, AP23) or no diet over late fall and winter in Florida, U.S.A. We measured the change in mass of adult bees, brood, and full colonies after nine weeks of feeding. We also measured the average mass per pupa, amount of pollen substitute patty consumed, the average total mass of natural pollen collected, and the proportion of pollen foragers.

opencc-by-4.0Aug 2021View details →

Mapping of glacial lakes using Sentinel-1 and Sentinel-2 data and a random forest classifier: Strengths and challenges

The water body detection and mapping algorithm named 'glakemap' that I designed was aimed at specifically mapping glacial lakes across alpine regions where their detection and mapping are challenged by many factors such as shadows, cloud cover, turbidity, and ice surface. The algorithm uses Copernicus Sentinel-1 and -2 satellites data and machine learning model (random forest) in an integrated manner to automatically classify glacial lakes from other surface features. In specific, the algorithm takes Sentinel-1 and -2 satellites data as the main inputs. It calculates radar backscatter and Normalised Difference Water Indices (NDWIs) using these datasets, respectively. The radar backscatter and NDWIs products (images) are segmented using a set of rules producing many polygons including lake polygons. Lake polygons are then automatically separated/retained using the random forest model which is trained using features relevant to lakes. The dataset is also available at https://www.mountcryo.org/

opencc-by-4.0May 2021View details →

Supplemental Material to Journal Article "Probabilistic Approach for the Fatigue Strength Prediction of Polymers"

This set supplements the figure and table data to the article "Probabilistic Approach for the Fatigue Strength Prediction of Polymers", DOI: <a href="https://doi.org/10.2514/1.J060444">https://doi.org/10.2514/1.J060444</a> The Python code to reproduce the results shown in the article is released as v1.0 of the MAMO toolbox for material models DOI: The latest code development can be cloned at <a href="https://github.com/mrosemeier/mamo">https://github.com/mrosemeier/mamo</a>.

opencc-zeroJan 2023View details →

Strength of the 'island rule' in birds is positively associated with absence of avian predators

The similar characteristics shared by island environments have been shown to lead to common patterns of adaptations in island species, commonly referred to as the "insularity syndrome". A well-known example is the "island rule", where large species become smaller on islands and small species become larger, leading to well-known cases of dwarfism and gigantism. This pattern was recently verified on a global scale, but the mechanisms underlying it have been poorly investigated. Here, we focused on the role of released pressure from predation and competition experienced by island birds. Using 120 pairs of endemic island species and their mainland sister relatives, we first verified that the island rule was detected in our dataset, and then evaluated the effects of the numbers of raptors and inter-specific competitors on the evolution of the insular species' body mass. We found a strong effect of predation on body mass evolution, with a stronger island rule for species occurring on islands with no raptors, while the pattern disappears in their presence. However, we did not find an effect of competition on this pattern. Our study shows the importance of considering ecological interactions for understanding patterns of body size evolution, and the exceptions to those patterns.

opencc-zeroFeb 2023View details →

Code for the population genetic models of the evolution of preference strength

Sexual selection has a rich history of mathematical models that consider why preferences favor one trait phenotype over another (for population genetic models) or what specific trait value is preferred (for quantitative genetic models). Less common is exploration of the evolution of choosiness or preference strength: that is, by how much a trait is preferred. We examine both population and quantitative genetic models of the evolution of preferences, specifically developing "baseline models" of the evolution of preference strength during the Fisher process. Using a population genetic approach based on the classic model of Kirkpatrick (1982), we find selection for stronger and stronger preferences when trait variation is maintained by mutation. However, this force is quite weak and likely to be swamped by drift in moderately-sized populations. In a quantitative genetic model based on Lande (1981), unimodal preferences will generally not evolve to be increasingly strong without bounds when male traits are under stabilizing viability selection, but evolve to extreme values when viability selection is directional. Our results highlight that different shapes of fitness and preference functions lead to qualitatively different trajectories for preference strength evolution ranging from no evolution to extreme evolution of preference strength.

opencc-zeroMay 2023View details →

Effects of density on the strength of sexual selection in the lab and in nature in an undescribed amphipod species

There is a growing effort to understand how sexual selection varies over space and time under different ecological conditions and how this can maintain variation in sexual traits. An interesting ecological condition is population density, which can either increase or decrease sexual selection depending on the natural history of the species. We examined sexual and natural selection in an undescribed amphipod species (Hyalella sp.) using surveys of two natural populations that increase in density from spring to summer. We also conducted an experiment that directly manipulated density to assess the effects on sexual selection. In the field during spring (low density) and summer (high density), we documented sexual selection on male traits, including body size, gnathopods, and antennae. We discovered the magnitude and direction of this selection changed from spring to summer and selection patterns differed between populations. In the experiment, we found no sexual selection occurred at low density, but significant positive selection on all three male traits at medium and high densities. These results underscore the importance of isolating individual ecological factors to determine their role in sexual selection while also documenting patterns in natural populations to understand how selection varies over space and time.

opencc-by-4.0Jul 2023View details →

Effect of burosumab on muscle function and strength, and rates of ATP synthesis in skeletal muscle in adults with X-linked Hypophosphatemia

Abstract Context: Burosumab, a neutralizing antibody to FGF23, is approved for the treatment of X-linked hypophosphatemia. In clinical trials burosumab improves symptoms of pain, fatigue and stiffness and improves performance on certain muscle function studies. Objective: Determine if burosumab would increase ATP synthesis in skeletal muscle of treatment-naïve adults with XLH and if so whether that correlated with improved muscle function. Methods: Ten symptomatic adults, who had not received any treatment for XLH for years, had ATP synthesis rates assessed in the soleus/gastrocnemius muscle complex of the right calf using the 31P magnetic resonance spectroscopy saturation transfer technique. Baseline muscle function tests and symptoms of pain, fatigue, stiffness and lower extremity joint pain were quantified. All participants were treated with burosumab, 1 mg/kg every four weeks for 12 weeks. ATP synthesis rates and muscle function tests were repeated 2-weeks (“peak”) and 4-weeks (“trough”) after the third dose of burosumab. Results: Pain, fatigue, stiffness and lower extremity joint pain all improved with treatment. Performance on the 6-Minute Walk and Sit to Stand tests also improved significantly. Performance on the Timed Up and Go test did not significantly improve (p = 0.057). Muscle strength, measured by dynamometry, did not change significantly in either the upper or lower extremities during the study. ATP synthesis rates did not change over the three months of study in the group as whole. In a sub-analysis comparing individuals whose performances on the 6-Minute Walk Test and Sit to Stand tests were at or better than the mean outcome for those tests, to those whose outcomes were below the mean, no difference was observed in the rate of change in ATP synthesis rates. Despite profound and prolonged hypophosphatemia at baseline, intracellular muscle concentrations of phosphorus were normal. Conclusion: The improvement in the 6-Minute Walk Test and Sit to Stand tests without any observed change in either upper or lower extremity muscle strength or ATP synthesis rates, suggests that improvement in pain, fatigue and stiffness may explain, at least in part, the improved performance on these two tests. The preserved intracellular phosphate levels suggests that adaptive mechanisms are present in skeletal muscle that insulate intracellular phosphorus from life-long FGF23-mediaed hypophosphatemia.

opencc-zeroJul 2023View details →

Data from: Variation in the strength of female mate preference for male size supports the signal reliability hypothesis

Both sexually selected traits and mate preferences for these traits can be condition dependent, yet how variation in preferred traits could select for condition dependent preferences has rarely been examined. The signal reliability hypothesis predicts that mate preferences vary across environments in relation to the reliability of the information preferred traits provide in those environments. Extensive variation in copy number of the mc4r gene on Y chromosome is correlated with adult male size in Xiphophorus multilineatus, when males stop growing. This genetic variation allowed us to use a split-sibling design to show that male size is more variable, and thus likely to provide reliable information about male genotype, when males were reared in a warm as compared to cold environment. Females reared in the warm environment had stronger mate preferences for male size. Understanding how the reliability of male traits can select for conditional variation in the strength of the female mate preferences will further our discovery of adaptive mate preferences. For example, the relationship between the strength of a female's mate preference and their growth rates supports previous work hypothesizing disassortative mating in relation to growth rates to mitigate a documented growth-mortality tradeoff in this species.

opencc-by-4.0Jul 2023View details →

Allometric parameters and linear breaking strength of intestinal segments

The dataset reports bodyweight, crown-rump-length, and the linear breaking strengths of small and large intestinal segments in German Landrace pigs.

opencc-by-4.0Aug 2023View details →

Response mechanism of residual strength to meso-structure of shear surface in gravelly slip zone of ancient landslide

Response mechanism of residual strength to meso-structure of shear surface in gravelly slip zone of ancient landslide-Original data

opencc-by-4.0Aug 2023View details →

Using sea level to determine the strength, structure and variability of the Cape Horn Current

This is the data used in the paper ('Using sea level to determine the strength, structure and variability of the Cape Horn Current').

opencc-by-4.0Aug 2023View details →

Taylor Glacier Tunnel: Measurements of the composition, deformation and strength of basal ice made in a tunnel in Taylor Glacier, Antarctica

Data set from Taylor Glacier tunnel Photographs of tunnel excavation Video of tunnel excavation

opencc-zeroSep 2023View details →

Data from: Male size does not affect the strength of male mate choice for high-quality females in Drosophila melanogaster

Theory predicts that the strength of male mate choice should vary depending on male quality when higher-quality males receive greater fitness benefits from being choosy. This pattern extends to differences in male body size, with larger males often having stronger pre- and post-copulatory preferences than smaller males.We sought to determine whether large males and small males differ in the strength (or direction) of their preference for large, high-fecundity females using the fruit fly, Drosophila melanogaster. We measured male courtship preferences and mating duration to show that male body size had no impact on the strength of male mate choice; all males, regardless of their size, had equally strong preferences for large females. To understand the selective pressures shaping male mate choice in males of different sizes, we also measured the fitness benefits associated with preferring large females for both large and small males. Male body size did not affect the benefits that males received: large and small males were equally successful at mating with large females, received the same direct fitness benefits from mating with large females, and showed similar competitive fertilization success with large females. These findings provide insight into why the strength of male mate choice was not affected by male body size in this system. Our study highlights the importance of evaluating the benefits and costs of male mate choice across multiple males to predict when differences in male mate choice should occur.

opencc-by-4.0Apr 2023View details →

Shear bond strength of three universal adhesives to three CAD-CAM resin-based composites with and without a silane coupling agent

i) The dataset acquired and analyzed in a laboratory study assessing the effect of three universal adhesives and a two-component silane coupling agent on the shear bond strength to three CAD-CAM resin-based composites with dispersed fillers (CCRBCs).  ii) Data on the randomized allocation of specimens using computer-generated sequences created with free online software.

restrictedIPD-UNDECIDEDFeb 2026View details →

Study to Evaluate the Effect of 2 Dosage Strengths of Lemborexant (E2006) on a Multiple Sleep Latency Test in Participants With Insomnia Disorder

ClinicalTrials.gov study NCT02350309. IPD Sharing: Not stated. Countries: 1. Publications: 1.

Comparison of Active vs Passive Neural Mobilizations Effects in Improving Burning Pain, Muscular Strength, and Range of Motion in Patients With Diabetic Neuropathy

ClinicalTrials.gov study NCT07141992. IPD Sharing: NO. Countries: 1. Publications: 1.

Strengths to Grow - Preteen: An Online Parenting Resource

ClinicalTrials.gov study NCT05582057. IPD Sharing: NO. Countries: 1. Publications: 6.

Recovering From Intimate Partner Violence Through Strengths and Empowerment (RISE)

ClinicalTrials.gov study NCT03261700. IPD Sharing: NO. Countries: 1. Publications: 10.

The Impact of Glomerular Disorders on Bone Quality and Strength

ClinicalTrials.gov study NCT04528446. IPD Sharing: NO. Countries: 1. Publications: 7.

Combined Land- and Water-Based Core and Lower Extremity Strength Training in Improving the Jump Performance Among Volleyball and Basketball Players

ClinicalTrials.gov study NCT06412809. IPD Sharing: NO. Countries: 1. Publications: 12.