Results 171 to 180 of about 845,882 (391)

Chemical interactions in Low Earth Orbit (LEO) [PDF]

Although several observations of material changes on-orbit have been reported, mechanistic understanding has not yet become clear because new sets of non-intuitive processes are occurring on orbit. Reactant kinetic energy, low collision rates and surface/
Green, B. D.
core   +1 more source

The Effect of Low Earth Orbit Atomic Oxygen Exposure on Phenylphosphine Oxide-Containing Polymers [PDF]

, 2000
John W. Connell
openalex   +1 more source

Effects of cardiac motion on dose distribution during stereotactic arrhythmia radioablation treatment: A simulation and phantom study

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Cardiac motion may degrade dose distribution during stereotactic arrhythmia radioablation using the CyberKnife system, a robotic radiosurgery system. This study evaluated the dose distribution changes using a self‐made cardiac dynamic platform that mimics cardiac motion. Methods The cardiac dynamic platform was operated with amplitudes
Takayuki Miyachi, Takeshi Kamomae, Fumitaka Kawabata, Kuniyasu Okudaira, Mariko Kawamura, Shunichi Ishihara, Shinji Naganawa   +6 more
wiley   +1 more source

In orbit reconfigurable dual X and K-band transmitter for Low Earth Orbit multi-mission satellites

Journal of Information and Telecommunication
The forthcoming project by the National Research and Innovation Agency encompasses deploying a constellation of telecommunication microsatellites in Low Earth Orbit.
Roza Widya, Nasser Eriko Nasemudin, Avsar Cem   +2 more
doaj   +1 more source

Kinematic and reduced-dynamic precise orbit determination of low earth orbiters [PDF]

Advances in Geosciences, 2003
Various methods for kinematic and reduced-dynamic precise orbit determination (POD) of Low Earth Orbiters (LEO) were developed based on zero- and double-differencing of GPS carrier-phase measurements with and without ambiguity resolution.
D. Švehla, M. Rothacher
doaj  

Cargo launch vehicles to low earth orbit [PDF]

There are two primary space transportation capabilities required to support both base programs and expanded mission requirements: earth-to-orbit (ETO) transportation systems and space transfer vehicle systems.
Austin, Robert E.
core   +1 more source

Tracking tropospheric radio occultation signals from low Earth orbit [PDF]

, 2001
Sergey Sokolovskiy
openalex   +1 more source

A review of artificial intelligence in brachytherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Artificial intelligence (AI) has the potential to revolutionize brachytherapy's clinical workflow. This review comprehensively examines the application of AI, focusing on machine learning and deep learning, in various aspects of brachytherapy.
Jingchu Chen, Richard L. J. Qiu, Tonghe Wang, Shadab Momin, Xiaofeng Yang   +4 more
wiley   +1 more source

The combined release and radiation effects satellite, a joint NASA/DOD program [PDF]

The Combined Release and Radiation Effects Satellite (CRRES) program is a two-phase joint USAF/NASA program consisting of a low Earth orbit (LEO) phase and a geosynchronous transfer orbit (GTO) phase.
Berrier, D. J.
core   +1 more source

Life extension and orbit maneuvering strategies for small satellites in low Earth orbit using electrodynamic tethers [PDF]

, 2001
Brent West, Brian Gilchrist
openalex   +1 more source