J.R. Stevens results 824
· Newest (Page 1/33, per page 25)
Author: J.R. Stevens ×Clear All Filters
Search Results
Isatin–pyridine oxime hybrids as potential reactivators of A-242-inhibited acetylcholinesteraseNARA Subscribed
Three new isatin–pyridine-2-oxime hybrids (AM01–03) were synthesized and experimentally evaluated as reactivators of acetylcholinesterase (AChE) inhibited by a surrogate of the nerve agent A-242, in comparison with their 4-oxime isomers previously reported by our research group. Furthermore, the interactions of these molecules within the AChE/A-242 complex were assessed through docking and molecular dynamics (MD) simulations....
Climate Attribution in Fishery Stock Assessment: Case Studies From the Northeast U.S. Groundfish StocksNARA Subscribed
Climate change poses an unprecedented risk to fisheries ecosystems and economies globally. Ocean warming has led to observed geographic shifts and changes in the productivity of fish stocks. Due to the rapid pace of change in many of the world's oceans, there is a critical need to develop and apply scientific knowledge and tools that can help account for non‐stationarity and integrate climate and ecosystem drivers into fishery...
Muscle architectural and performance adaptations following an 8-week sprint-focused training interventionNARA Subscribed
Muscle fascicle length is a key determinant of sprint performance, with lengthening adaptations observed following eccentric strength training or combined sprint and resistance interventions. However, whether sprint-focused training can induce meaningful architectural adaptations, independent of concurrent sport-related training, remains unclear. Fourteen participants (10 female, 4 male; age 21.6 ± 3.3 years; body mass 68.0 ±...
Using Eye Lens Stable Isotopes to Identify the Rearing Origin of Fall Age‐0 Walleye ( Sander vitreus )NARA Subscribed
Isotope values in fish eye lenses may be useful in differentiating rearing origins. We compared eye lens isotopic values of fall fingerling age‐0 walleye ( Sander vitreus ) reared in a hatchery pond, a recirculating aquaculture system (RAS), and a natural lake. Using 10 fish per rearing source, we delaminated layers from one eye lens per fish to assess temporal changes in carbon (δ 13 C) and nitrogen (δ 15 N) and pulverized th...
Blacktip sharks ( Carcharhinus limbatus ) are a circumglobal species that rely on nearshore nursery habitats during their early years. Movement patterns and habitat use of blacktip sharks in the Hawaiian Islands is poorly understood, and no nursery habitats have been discovered within Hawai’i. For this study, juvenile blacktip sharks (n = 29) were caught and tagged in Hilo Bay, Hawai’i, USA with acoustic transmitters. Tracking...
Scaling the Spatial and Temporal Effects of Wrack Disturbance Across a Saltmarsh LandscapeNARA Subscribed
Disturbance effects are rarely distributed uniformly over space or time. Thus, scaling up the effects of disturbances requires detailed measurements across multiple spatial scales. To characterize disturbance from wrack we used monthly images from an unmanned aerial vehicle (UAV) in a 144,500 m 2 Spartina alterniflora saltmarsh on Sapelo Island, Georgia (USA), from March 2020 to December 2022. Prior work as well as the results...
Marek’s disease (MD) is caused by the highly contagious Marek’s disease virus (MDV), a tumorigenic alphaherpesvirus. The disease is presently managed through vaccination. Nevertheless, the dynamic nature of MDV presents challenges, as new virulent strains may arise that can potentially overcome existing vaccine-mediated immunity. To address this, new and more effective vaccines are crucial. The immune system’s first line of de...
We report the first live in situ observations of the iconic goblin shark ( Mitsukurina owstoni ) on a seamount near Jarvis Island in 2019 and on the slope of the Tonga Trench in 2024. Past observations are restricted to specimens hauled to the surface, resulting in limited knowledge of this species' ecology. These observations extend its known geographic and depth range considerably, and extend the depth range of lamniform sha...