Results 101 to 110 of about 11,866 (295)
Real-time LEO satellite clock estimation with predicted LEO satellite orbits constrained [PDF]
Low Earth Orbit (LEO) satellites can augment the traditional GNSS-based positioning, navigation and timing services, which require real-time high-precision LEO satellite clock products.
Wang, Kan +5 more
core +1 more source
Phase Diagrams and Piezoelectric Properties of Wurtzite Al1−x−yScxGdyN Heterostructural Alloys
Advanced Science, EarlyView.This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Julia L. Martin +11 more
wiley +1 more source
Mission and system design of a 3U CubeSat for passive GTO to LEO transfer
, 2012 This paper denotes a mission concept and system design for a 3U CubeSat technology demonstration. The spacecraft carries an inflatable, ejectable balloon that is used to engineer its area-to-mass-ratio.
Colombo, Camilla +3 more
core
Population Based Routing in LEO Satellite Networks [PDF]
, 2022 Packet switching in a Low Earth Orbit (LEO) satellite network may calculate the best traffic route through the less populated areas of the planet, in order to avoid relaying through the busiest satellites. A number of ideas for route calculation in a LEO
Landmark, Lars, Fongen, Anders
core
Atomic Tuning of Metal‐Support Interactions for Pathway‐Selective CO2 Photoreduction on TiO2
Advanced Science, EarlyView.Single‐atom Fe and Cu catalysts anchored on TiO2 steer photocatalytic CO2 reduction toward distinct pathways. Fe sites favor rapid *CO desorption and selective CO formation, whereas Cu sites stabilize *CHO intermediates, enabling deep reduction and C─C coupling. Combined spectroscopy and DFT calculations reveal how metal–support interactions and oxygen
Dongyun Kim +13 more
wiley +1 more source
Selective Inhibition of Integrin β3 Topology Provides a Safer Antithrombotic Strategy
Advanced Science, EarlyView.Current integrin αIIbβ3 inhibitors effectively reduce thrombosis but also increase bleeding risk. During thrombosis, high shear blood flow can directly activate the integrin αIIbβ3 via a distinct topological change in the β3 transmembrane domain, independent of hemostatic platelet signaling.
Joonha Lee +11 more
wiley +1 more source
Advanced Science, EarlyView.A multifunctional HA‐conjugated nanoplatform (HA‐PGMC) integrates CuO2, glucose oxidase, and mil‐100 to enable cascade catalytic ROS generation in tumor microenvironments. This self‐supplying ROS strategy induces immunogenic cell death, reprograms “cold” tumors into “hot” ones, and synergizes with PD‐L1 blockade, achieving potent chemodynamic ...
Man Lung Lee +6 more
wiley +1 more source
Advanced Science, EarlyView.Here, we demonstrate and investigate polarization‐enabled electromechanical responses in cryogenic physical vapor deposition (cryogenic PVD)‐deposited TexSe1‐x thin films, a tellurium‐based compound with a tunable bandgap and enhanced non‐centrosymmetry.
Chia‐Chen Chung +16 more
wiley +1 more source
Coverage Analysis of LEO Satellite Downlink Networks: Orbital Geometry Dependent Approach
IEEE AccessThe low-Earth-orbit (LEO) satellite network has emerged as a promising technology for providing global coverage with high data rates. However, analyzing the performance of the LEO satellite network is particularly challenging due to its dependence on ...
Junse Lee +3 more
doaj +1 more source
Advanced Science, EarlyView.A hierarchically structured Fe‐BTC‐PMA immobilized 3D‐printed platform is engineered as a robust artificial enzyme for colorimetric glucose sensing. The hybrid architecture efficiently activates H2O2 to drive TMB oxidation. This integrated system enables sensitive, reusable, and scalable detection with enhanced catalytic stability and analytical ...
Paramita Koley +10 more
wiley +1 more source