Results 131 to 140 of about 6,136,424 (429)
The Logistical Challenges of the SpaceLiner Concept [PDF]
, 2008 The SpaceLiner concept developed at DLR combines extremely fast transport (90 minutes from Europe to Australia) with the experience of Space flight. As such it is different from the spaceflight which focuses exclusively on space tourism but it combines ...
Sippel, Martin, van Foreest, Arnold
core
Long-duration space flight and bed rest effects on testosterone and other steroids.
Journal of Clinical Endocrinology and Metabolism, 2012 CONTEXT Limited data suggest that testosterone is decreased during space flight, which could contribute to bone and muscle loss. OBJECTIVE The main objective was to assess testosterone and hormone status in long- and short-duration space flight and bed
Scott M Smith +4 more
semanticscholar +1 more source
Optical Hydrogen Sensing Materials for Applications at Sub‐Zero Temperatures
Advanced Functional Materials, EarlyView.This study demonstrates the viability of optical hydrogen sensors at temperatures as low as −60°C. Using advanced metal hydride materials, the sensors detect hydrogen with high sensitivity, speed, and stability across a wide range of concentrations. These findings open doors for safe hydrogen detection in extreme cold, enabling applications in aviation,
Ziqing Yuan +4 more
wiley +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingScientific analysis of Earth's land surface change benefits from well-characterized multispectral remotely sensed data for which models estimate and remove the effects of the atmosphere and sun-sensor geometry.
Paul M. Montesano +7 more
doaj +1 more source
History of Manned Space Flight [PDF]
U.S. manned space projects from Mercury Redstone 3 through Skylab 4 are briefly described including dates, flight duration, crew, and number of earth/moon orbits. The flight costs of each project are itemized.
core +1 more source
, 2019 In little more than a decade, SpaceX, Blue Origin, and a host of other upstart companies have changed the conversation about commercial space. While the plans and dreams of these pioneers were initially dismissed by nation states and major corporate launch providers, they have emerged as disruptors for the global launch market.
openaire +1 more source
Space Flight Calcium: Implications for Astronaut Health, Spacecraft Operations, and Earth
Nutrients, 2012 The space flight environment is known to induce bone loss and, subsequently, calcium loss. The longer the mission, generally the more bone and calcium are lost.
Scott M Smith +5 more
semanticscholar +1 more source
Tin‐Based 2D/3D Perovskite Vertical Heterojunction for High‐Performance Synaptic Phototransistors
Advanced Functional Materials, EarlyView.Phototransistors based on tin‐based 2D/3D perovskite heterostructures show an ultrahigh responsivity and detectivity at a low gate voltage across a broad wavelength region from ultraviolet to near‐infrared. The devices can replicate neuromorphic learning and remembering behaviors to light stimuli, in addition to electric depression and memory erasure ...
Hok‐Leung Loi +10 more
wiley +1 more source
Modeling of aerodynamic Space-to-Surface flight with optimal trajectory for targeting [PDF]
arXiv, 2003 Modeling has been created for a Space-to-Surface system defined for an optimal trajectory for targeting in terminal phase. The modeling includes models for simulation atmosphere, speed of sound, aerodynamic flight and navigation by an infrared system. The modeling simulation includes statistical analysis of the modeling results.
arxiv
LVIII Some Vestibular Problems in Space Flight [PDF]
, 1961 Walter H. Johnson
openalex +1 more source