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Dataset results
153 results for “low light”
Study of Low Level Laser Light Therapy on Circumference Reduction
ClinicalTrials.gov study NCT02109107. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Morphological and transcriptomic responses/acclimations of erect-type submerged macrophyte Hydrilla verticillata both at low-light exposure and light recovery phases
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Three dimensional localization refinement and motion model parameter estimation for confined single particle tracking under low-light conditions: Simulation datasets
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Mesophotic corals in Hawaii maintain autotrophy to survive low-light conditions: Stable isotope dataset
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Active and low-cost hyperspectral imaging for spectral analysis in low lighting environment
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Phenotype pictures of Arabidopsis thaliana in high light and low light conditions
<p>The rate at which plants grow is a major functional trait in plant ecology. However, little is known about its evolution in natural populations. Here, we investigate evolutionary and environmental factors shaping variation in the growth rate of Arabidopsis thaliana. We used plant diameter as a proxy to monitor plant growth over time in environments that mimicked latitudinal differences in the intensity of natural light radiation, across a set of 278 genotypes sampled within four broad regions, including an outgroup set of genotypes from China. The observed variation was validated in a field experiment conducted under natural conditions. All genotypes grew markedly wider rosettes when the light supply was decreased, demonstrating that environmental plasticity is a predominant source of variation to adapt plant size to prevailing light conditions. Yet, we detected significant levels of genetic variation both in growth rate and growth plasticity. Genome-wide association studies revealed that only 2 single nucleotide polymorphisms associate with genetic variation for growth above Bonferroni confidence levels. However, marginally associated variants were strongly enriched among genes with an annotated role in growth and stress reactions. Polygenic scores computed from marginally associated variants confirmed the polygenic basis of growth variation. For both light regimes, phenotypic divergence between Europe and the distantly related populations of China is smaller than the variation observed within Europe indicating that plant growth is constrained by stabilizing selection. We observed that Spanish genotypes, however, reach a significantly larger size than Northern European genotypes. Tests of adaptive divergence and analysis of the individual burden of deleterious mutations reveal that adaptive processes have played a more important role in shaping regional differences in rosette growth than maladaptive evolution.</p>
Low surface brightness observations with the Roman Telescope: The intracluster light
<p>There is a huge amount of astrophysical events that remain barely studied due to the lack of large, deep surveys. These events are those which are very faint and extend over large areas of the sky. For instance, only a handful of galaxy clusters have been observed with enough depth to witness the intracluster light (ICL), made up of stars that drift freely between galaxies in the cluster.<br> This light is key to understanding the assembly mechanisms occurring inside galaxy clusters. However, little is known about this light as it is very difficult to observe due to its low surface brightness.<br> The availability of deep surveys, such as the Hubble Frontier Fields, have expanded our knowledge of the properties, and therefore the origin, of the ICL. However, larger samples are needed to understand the evolution of this component with time and the efficiency of the different evolutionary processes inside galaxy clusters.<br> WFIRST appears as a unique tool to investigate the evolution of the ICL with time. Observing in the IR, brings the advantage that the stellar populations of the ICL are brighter in those wavelengths and their evolution with time is less dramatic compared to the optical bands, making studies of the fraction of ICL with redshift more consistent.<br> In this talk, I will present the latest advances in our understanding of the ICL. I will also talk about the lessons learned using this magnificent dataset that can be applied in future observations of the ICL with WFIRST.</p>
Data from: Low-cost automated flight intercept trap for the temporal sub-sampling of flying insects attracted to artificial light at night
<p>Sampling methods are selected depending on the targeted species or the spatial and temporal requirements of the study. However, most methods for passive sampling of flying insects have poor temporal resolution because it is time consuming, costly and/or logistically difficult. Effective sampling of flying insects attracted to artificial light at night (ALAN) requires sampling at user-defined time points (nighttime only) across well-replicated sites resulting in major time and labor-intensive survey effort or expensive automated technologies. Described here is a low-cost automated intercept trap that requires no specialist equipment or skills to construct and operate, making it a viable option for studies that require temporal sub-sampling across multiple sites. The trap can be used to address a wide range of other ecological questions that require a greater temporal and spatial scale than is feasible with previous trap technology.</p>
Supplementary material 1 from: Murphy CA, Gerth W, Neal T, Arismendi I (2022) A low-cost, durable, submersible light trap and customisable LED design for pelagic deployment and capture of fish parasite Salmincola sp. copepodids. NeoBiota 73: 1-17. https://doi.org/10.3897/neobiota.73.76515
Supplementary material for a low-cost, durable, submersible light trap and customizable LED design for pelagic deployment and capture of fish parasite Salmincola sp. copepodids
Fig. 3 in ddRAD Sequencing Sheds Light on Low Interspecific and High Intraspecific mtDNA Divergences in Two Groups of Caddisflies
Fig. 3. Maximum likelihood trees and population structuring of Apatania (A) and Limnephilus (B) based on ddRAD SNP data.ML trees were inferred from RAxML analysis with 1,000 bootstrap replicates. The bootstrap values are indicated near the branches. Results of population STRUCTURE analyses with posterior probability plots of individual assignments to the inferred genetic clusters for K = 6 and 7 for Apatania and K = 4 for Limnephilus.
Fig. 2 in ddRAD Sequencing Sheds Light on Low Interspecific and High Intraspecific mtDNA Divergences in Two Groups of Caddisflies
Fig. 2. Maximum likelihood trees based on mitochondrial COI sequences of Apatania (A) and Limnephilus (B). The bootstrap values are indicated near the branches (only shown for nodes supported with more than 50% of BS).
Dataset for "Improving data quality of low-cost light-scattering PM sensors: Towards automatic air quality monitoring in urban environments"
<p>The dataset contains the data used in the article "Improving data quality of low-cost light-scattering PM sensors: Towards automatic air quality monitoring in urban environments".</p> <p>A low-cost monitoring system composed of 14 monitoring stations was positioned at the official monitoring station of Torino Rubino in the city of Turin (Italy). The official station is managed by the environmental agency ARPA Piemonte.</p> <p>Each low-cost station contains four low-cost light-scattering PM sensors (Honeywell HPMA115S0-XXX), one temperature and relative humidity sensor (DHT22), and one atmospheric pressure sensor (BME/BMP280).<br>The sampling time of the PM sensors was set to one second, while the other sensors generated measurements every 3-4 seconds.</p> <p>The official monitoring station uses both a gravimetric and a beta attenuation instrument for measuring PM.</p> <p>The data contained in this dataset was collected from October 2020 to November 2021. It contains the PM2.5, relative humidity, and temperature measurements of the low-cost monitoring system and the official measurements of the beta attenuation device.</p> <p>Measurements of low-cost sensors are expressed in UTC, while official measurements are expressed in UTC+1.</p> <p>Official PM measurements can be also found at https://aria.ambiente.piemonte.it/qualita-aria/dati.</p>
Fundus Effects of Repeated Low-Level Red-Light Therapy in Chinese Myopic Minors: A Randomized Controlled Clinical Trial
ClinicalTrials.gov study NCT06034912. IPD Sharing: NO. Countries: 1. Publications: 0.
Effects of Low-Level Red Light and Distant-Image Screen for Myopia Control in Children
ClinicalTrials.gov study NCT06683287. IPD Sharing: NO. Countries: 1. Publications: 1.
Effectiveness of Low-Level Light Therapy for Vocal Fatigue
ClinicalTrials.gov study NCT07062302. IPD Sharing: YES. Countries: 1. Publications: 2.
Augmenting Internet-Based Cognitive Behavioral Therapy for Major Depressive Disorder With Low-Level Light Therapy
ClinicalTrials.gov study NCT02898233. IPD Sharing: UNDECIDED. Countries: 1. Publications: 3.
Feasibility Study of Low Level Light Therapy for Prevention of Oropharyngeal Mucositis in Pediatric Transplants Patients
ClinicalTrials.gov study NCT02119897. IPD Sharing: NO. Countries: 1. Publications: 1.
Efficacy of Low-Level Light Therapy in Reducing Dry Eye in Patients Undergoing Cataract Surgery
ClinicalTrials.gov study NCT05754437. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Low Laser Light Therapy After Impacted Third Molar Removal
ClinicalTrials.gov study NCT02602431. IPD Sharing: Not stated. Countries: 1. Publications: 10.
Efficacy of Repeated Low-Level Red-Light Therapy in Myopia Control
ClinicalTrials.gov study NCT04073238. IPD Sharing: YES. Countries: 1. Publications: 2.
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.