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135 results for “Aging Test”
Data from: Clock model makes a large difference to age estimates of long-stemmed clades with no internal calibration: a test using Australian grasstrees
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Data from: Longitudinal study of performance on the Ruff Figural Fluency Test in persons aged 35 years or older
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Data from: Reference data for the Ruff Figural Fluency Test stratified by age and educational level
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An experimental test to separate the effects of male age and mating history on female mate choice
<p>Should females prefer older males as mates? Male survival to old age might indicate the presence of fitness-enhancing genes that increase offspring fitness. However, many correlational studies show that mating with older males can lower female fecundity, and even reduce offspring fitness due to epigenetic or germline mutation effects. One problem in quantifying female choice based on male age is that age is usually confounded with mating history. This begs a question: Do females choose males based on their age, or their mating history? The answer requires an experimental approach, but few such studies exist. Here we test if experimentally-induced variation in the mating history of old and young males (12 week difference in post-maturity age) affects female choice in the eastern mosquitofish (<i>Gambusia holbrooki</i>). To vary mating history, adult males were either allowed to freely mate with females for three weeks, or they only had visual contact with females. Immediately thereafter, we ran four-choice mating trials, using association time, to test the effects of male age and mating history (2x2 design) on male attractiveness. Females did not show a clear preference for males based on either characteristic. This was not due to a lack of female choice: females spent significantly more time with larger males. In addition, female choice was significantly repeatable across four trials: twice as a virgin, twice as a non-virgin. Finally, female mating status (virgin or non-virgin) did not affect her choice of mate, although virgin females spent significantly more time associating with test males.</p>
Testing size-frequency distributions as a method of ontogenetic aging: a life history assessment of hadrosaurid dinosaurs from the Dinosaur Park Formation of Alberta, Canada, with implications for hadrosaurid paleoecology
<p class="MsoNoSpacing">Hadrosaurid dinosaurs, the dominant large-bodied terrestrial herbivores in most Laurasian Late Cretaceous ecosystems, have an exceptional fossil record consisting of many species known from partial ontogenetic series making them an ideal clade with which to conduct life history studies. Previous research considered the Dinosaur Park Formation (DPF) of Alberta as an attritional, or time-averaged, sample and interpreted size-frequency distribution of long bones collected from the DPF with three size classes to suggest that hadrosaurids from the DPF attained near-asymptotic body size in under three years. This conflicted with previously published osteohistological estimates of 6+ years for penecontemporaneous hadrosaurids from the Two Medicine Formation (TMF) of Montana suggesting either extreme variation in hadrosaurid growth rates or that size-frequency distributions and/or osteohistology and growth modeling inaccurately estimate ontogenetic age.</p> <p>We tested the validity of the previously proposed size-age relationship of hadrosaurids from the DPF by significantly increasing sample size and combining data from size-frequency distributions and osteohistology across multiple long bones elements. The newly constructed size-frequency distributions typically reveal four relatively distinct size-frequency peaks that, when integrated with the osteohistological data, aligned with growth marks. The yearling size class was heavily underrepresented in the size-frequency distribution. If not due to preservation, this suggests that either juvenile (< 2 years of age) hadrosaurids from the DPF had increased survivorship following an initially high nestling mortality rate, or that yearlings were segregated from adults. A growth curve analysis revealed asymptotic body size was attained in approximately 7 years, which is consistent with hadrosaurids from the TMF. The data suggest size-frequency distributions of attritional samples underestimate age and overestimate growth rates, but when paired with osteohistology can provide unique life history insights.</p>
Supplementary material 1 from: Hall RM, Urban B, Skalova H, Moravcová L, Sölter U, Starfinger U, Kazinczi G, van Valkenburg J, Fenesi A, Konstantinovic B, Uludag A, Lommen S, Karrer G (2021) Seed viability of common ragweed (Ambrosia artemisiifolia L.) is affected by seed origin and age, but also by testing method and laboratory. NeoBiota 70: 193-221. https://doi.org/10.3897/neobiota.70.66915
Supporting tables and figures
A Study to Test Different Doses of BI 836880 in Patients With an Eye Disease Called Wet Age-related Macular Degeneration (wAMD)
ClinicalTrials.gov study NCT03861234. IPD Sharing: NO. Countries: 3. Publications: 0.
A Study to Test an Oral Medicine, Belumosudil, in Combination With Corticosteroids in Participants at Least 12 Years of Age With Newly Diagnosed Chronic Graft Versus Host Disease.
ClinicalTrials.gov study NCT06143891. IPD Sharing: YES. Countries: 24. Publications: 0.
A Study to Compare the Pharmacokinetics (PK) of Salbutamol Administered Via Metered Dose Inhalers (MDI) Containing Propellants HFA-152A (Test) or HFA-134A (Reference) in Healthy Participants Aged 18 t
ClinicalTrials.gov study NCT06433908. IPD Sharing: YES. Countries: 1. Publications: 0.
Safety and Immunogenicity Testing of Influenza Vaccine in Healthy Children 2 Months and 6 Months of Age
ClinicalTrials.gov study NCT00858468. IPD Sharing: Not stated. Countries: 1. Publications: 0.
A Study to Test the Long-term Safety, Tolerability and Efficacy of Brivaracetam in Study Participants 2 to 26 Years of Age With Childhood Absence Epilepsy or Juvenile Absence Epilepsy
ClinicalTrials.gov study NCT05109234. IPD Sharing: YES. Countries: 6. Publications: 0.
Message Testing in Aging African American Smokers
ClinicalTrials.gov study NCT05819086. IPD Sharing: NO. Countries: 1. Publications: 0.
Improving Uptake and Adherence to HIV Prevention Services With Pre-exposure Prophylaxis (PrEP), HIV Self- Testing and Adherence Support for Very High Risk HIV-negative Young Women Aged 15-24 in Kampal
ClinicalTrials.gov study NCT04030520. IPD Sharing: NO. Countries: 1. Publications: 0.
A Study to Test the Safety of Pozelimab in Pediatric Participants 1 to 5 Years of Age With a Rare Disease Called CHAPLE (Complement Hyperactivation, Angiopathic Thrombosis, Protein-losing Enteropathy)
ClinicalTrials.gov study NCT07142343. IPD Sharing: YES. Countries: 1. Publications: 0.
A Study to Test How Well Different Doses of BI 754132 Are Tolerated in Patients With an Advanced Form of Age-related Macular Degeneration Called Geographic Atrophy
ClinicalTrials.gov study NCT04002310. IPD Sharing: NO. Countries: 2. Publications: 0.
Complementary Testing to Evaluate Immunogenicity of Human Papillomavirus (HPV) Vaccine (580299) in Healthy Female Subjects Aged >/= 26 Years
ClinicalTrials.gov study NCT00456807. IPD Sharing: YES. Countries: 1. Publications: 0.
Testing a Resilience Intervention for Individuals Aging With Multiple Sclerosis (MS)
ClinicalTrials.gov study NCT03177785. IPD Sharing: NO. Countries: 0. Publications: 1.
A Clinical Trial to Study the Impact of a Nutritional Beverage on Tests of Memory in Healthy Preschool Age Children
ClinicalTrials.gov study NCT02177942. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Testing size-frequency distributions as a method of ontogenetic aging: a life history assessment of hadrosaurid dinosaurs from the Dinosaur Park Formation of Alberta, Canada, with implications for hadrosaurid paleoecology
Open the record for dataset details and reuse information.
An experimental test to separate the effects of male age and mating history on female mate choice
Open the record for dataset details and reuse information.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.