David Conrad results 68
· Newest (Page 1/3, per page 25)
Author: David Conrad ×Clear All Filters
Search Results
Some aspects of synoptic to subseasonal variability of currents in the southern Japan/East Sea (JES) were investigated using high-resolution current measurements and reanalysis model products. Current measurements were made at multiple moorings containing acoustic Doppler current profilers (ADCPs) deployed during MJES (Mixing in the Japan/East Sea, 2021–2022) and LINKS (Linkages of Asian Marginal Seas, 1999–2000) programs. MJE...
Acute increases in temperature linked with marine heatwaves have been occurring with increasing frequency around New Zealand. Additionally, as rainfall rates vary in association with climate change, the salinity regimes in estuaries are changing, often with more frequent pulses of low salinity events. These physical changes in the environment can lead to sublethal stress and changes in the distribution of marine organisms. Ech...
Voxel-wise insights into early Alzheimer’s disease pathology progression: the association with APOE and memory declineNARA Subscribed
Longitudinal investigation of the Apolipoprotein E (APOE) genotype’s impact on Alzheimer’s disease (AD) biomarker progression, focusing on amyloid beta (Aβ) accumulation and gray matter (GM) atrophy, integrating cognitive decline and baseline levels. Longitudinal florbetapir-PET and T1-weighted MRI data from 100 cognitively normal (CN) and mild cognitive impaired (MCI) participants both with considerable global Aβ accumulation...
We show that analyzing archived and future multibeam backscatter and bathymetry data, in tandem with regional environmental parameters, can help to identify polymetallic nodule fields in the world’s oceans. Extensive archived multibeam transit data through remote areas of the world’s oceans are available for data mining. New multibeam data will be made available through the Seabed 2030 Project. Uniformity of along- and across-...
Complementary value of molecular, phenotypic, and functional aging biomarkers in dementia predictionNARA Subscribed
DNA methylation age (MA), brain age (BA), and frailty index (FI) are putative aging biomarkers linked to dementia risk. We investigated their relationship and combined potential for prediction of cognitive impairment and future dementia risk using the ADNI database. Of several MA algorithms, DunedinPACE and GrimAge2, associated with memory, were combined in a composite MA alongside BA and a data-driven FI in predictive analyse...
Feminization of a mixed-stock foraging aggregation of immature green turtles (Chelonia mydas), 1975–2018NARA Subscribed
Marine turtles exhibit temperature-dependent sex determination (TSD), and there is widespread concern that global warming is raising nest incubation temperatures, resulting in increasingly female-skewed sex ratios in “feminized” populations. We assessed the sex ratio of a mixed-stock aggregation of immature green turtles ( Chelonia mydas ) at a midocean developmental foraging ground in the Northwest Atlantic from 1975 to 2018....
Ambrosia beetles have co-evolved symbiotic relationships with an array of fungal partners. Mutualistic fungal partners are often highly successful in vertical transmission between beetle generations. These persisting relationships can alter beetle behaviour, resulting in the opportunity to occupy new ecological niches and to spread geographically. In Australia, ambrosia beetles are not currently considered a significant pest i...