Results 51 to 60 of about 7,874,791 (304)

Anisotropic Satellite Galaxy Quenching: A Unique Signature of Energetic Feedback by Supermassive Black Holes?

open access: yesThe Astrophysical Journal Letters, 2023
The quenched fraction of satellite galaxies is aligned with the orientation of the halo’s central galaxy, such that on average, satellites form stars at a lower rate along the major axis of the central.
Juliana S. M. Karp   +2 more
doaj   +1 more source

Long-term evolution of ocean eddy activity in a warming world

open access: yesNature Climate Change, 2022
Mesoscale ocean eddies, an important element of the climate system, impact ocean circulation, heat uptake, gas exchange, carbon sequestration and nutrient transport. Much of what is known about ongoing changes in ocean eddy activity is based on satellite
N. Beech   +5 more
semanticscholar   +1 more source

THUNDER: A Titan Orbiter Mission Concept for the New Frontiers Program Designed at the JPL Planetary Science Summer School

open access: yesThe Planetary Science Journal
Saturn's moon Titan is an enigmatic icy world whose surface is constantly modified by its active, Earthlike precipitation system. Here, we propose the Titan's Hydrocarbons: Uncovering New Dimensions of Evolutionary pRocesses (THUNDER) mission concept to ...
Cassandra Seltzer   +20 more
doaj   +1 more source

Evolution of Small and Micro Wetlands and Their Driving Factors in the Yangtze River Delta - A Case Study of Wuxi Area

open access: yesRemote Sensing, 2023
Understanding the long-term dynamics and driving factors behind small and micro wetlands is critical for their management and future sustainability. This study explored the impacts of natural and anthropogenic factors on the spatiotemporal evolution of ...
Jiamin Zhang   +5 more
semanticscholar   +1 more source

Characterizing Cutaneous α‐Synuclein Deposition and Seeding Activity in Parkinson's Disease Subtypes

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cutaneous phosphorylated α‐synuclein (p‐syn) and α‐synuclein seeding activity are promising biomarkers for Parkinson's disease (PD), but their clinical value remains uncertain due to disease heterogeneity. This study evaluates these two biomarkers in PD patients to inform phenotype‐specific diagnosis and disease severity assessment ...
Yuting Jin   +8 more
wiley   +1 more source

Forming Massive Terrestrial Satellites through Binary-exchange Capture

open access: yesThe Planetary Science Journal
The number of planetary satellites around solid objects in the inner solar system is small either because they are difficult or unlikely to form or because they do not survive for astronomical timescales.
Darren M. Williams, Michael E. Zugger
doaj   +1 more source

Application and Technological Evolution of GNSS in Natural Hazard Research: A Comprehensive Analysis Based on a Hybrid Review Approach

open access: yesRemote Sensing
Global Navigation Satellite Systems (GNSS), benefiting from global coverage, all-weather operation, high precision, and high temporal resolution, have progressively become a key technology in natural hazard monitoring and early warning systems.
Yong-Fei Yang   +5 more
semanticscholar   +1 more source

A Tool for Satellite Communications: Advanced DVB-RCS / DVB-S2 System and Protocol Simulator [PDF]

open access: yes, 2008
A tool has been designed to simulate broadband satellite communication systems and techniques: a system and protocol simulator based on advanced DVB-RCS and DVB-S2 standards.
Boussemart, Vincent   +3 more
core   +1 more source

microRNA‐7‐5p and α‐Synuclein SAA Predict Parkinson's Disease Phenoconversion

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Corroborate blood neuron‐derived extracellular vesicle (NDEV) alpha‐synuclein (αSyn), the CSF αSyn seed amplification assay (αSyn‐SAA), and blood microRNA‐7‐5p (miR‐7‐5p) as markers for Parkinson's disease (PD) phenoconversion and determine if combining these markers would help select subjects who would be more likely to phenoconvert.
Shayan Zadegan   +4 more
wiley   +1 more source

Triton’s Captured Youth: Tidal Heating Kept Triton Warm and Active for Billions of Years

open access: yesThe Planetary Science Journal
Neptune’s moon Triton has two remarkable attributes: its retrograde orbit suggests that it was captured from the Kuiper Belt, and Triton has one of the youngest surfaces of all the icy satellites in the solar system.
N. P. Hammond, G. C. Collins
doaj   +1 more source

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