Results 41 to 50 of about 5,837,687 (407)
Decreases in thymopoiesis of astronauts returning from space flight.
JCI Insight, 2016 Following the advent of molecular assays that measure T cell receptor excision circles (TRECs) present in recent thymic emigrants, it has been conclusively shown that thymopoiesis persists in most adults, but that functional output decreases with age ...
Cara L. Benjamin +7 more
semanticscholar +1 more source
Robust and Efficient Quadrotor Trajectory Generation for Fast Autonomous Flight [PDF]
IEEE Robotics and Automation Letters, 2019 In this letter, we propose a robust and efficient quadrotor motion planning system for fast flight in three-dimensional complex environments. We adopt a kinodynamic path searching method to find a safe, kinodynamic feasible, and minimum-time initial ...
Boyu Zhou +4 more
semanticscholar +1 more source
Chlorophyll Variability in the Oligotrophic Gyres: Mechanisms, Seasonality and Trends
Frontiers in Marine Science, 2015 A 16-year (1998-2013) analysis of trends and seasonal patterns was conducted for the five subtropical ocean gyres using satellite data: chlorophyll-a (Chl-a) retrievals from ocean color, sea surface temperature (SST), and sea-level anomaly (SLA).
Sergio Romano Signorini +3 more
doaj +1 more source
Communications Earth & EnvironmentWe report on observed trend anomalies in climate-relevant global ocean biogeochemical properties, as derived from satellite ocean color measurements, that show a substantial decline in phytoplankton carbon concentrations following eruptions of the ...
Bryan A. Franz +3 more
doaj +1 more source
Geographic variation in walking activity in the red flour beetle Tribolium castaneum
Population Ecology, EarlyView.This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley +1 more source
Russian forests show strong potential for young forest growth
Communications Earth & EnvironmentClimate warming has improved conditions for boreal forest growth, yet the region’s fate as a carbon sink of aboveground biomass remains uncertain. Forest height is a powerful predictor of aboveground forest biomass, and access to spatially detailed ...
Christopher S. R. Neigh +8 more
doaj +1 more source
Impact of space flight on bacterial virulence and antibiotic susceptibility
Infection and Drug Resistance, 2015 Manned space flight induces a reduction in immune competence among crew and is likely to cause deleterious changes to the composition of the gastrointestinal, nasal, and respiratory bacterial flora, leading to an increased risk of infection.
P. Taylor
semanticscholar +1 more source
Single‐cell insights into the role of T cells in B‐cell malignancies
FEBS Letters, EarlyView.Single‐cell technologies have transformed our understanding of T cell–tumor cell interactions in B‐cell malignancies, revealing new T‐cell subsets, functional states, and immune evasion mechanisms. This Review synthesizes these findings, highlighting the roles of T cells in pathogenesis, progression, and therapy response, and underscoring their ...
Laura Llaó‐Cid
wiley +1 more source