Results 161 to 170 of about 12,837,796 (336)

Apollo oxygen tank stratification analysis, volume 2 [PDF]

open access: yes
An analysis of flight performance of the Apollo 15 cryogenic oxygen tanks was conducted with the variable grid stratification math model developed earlier in the program.
Barton, J. E., Patterson, H. W.
core   +1 more source

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

open access: yesAdvanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti   +8 more
wiley   +1 more source

In Flight Performance of the Far Ultraviolet Instrument (FUV) on ICON. [PDF]

open access: yesSpace Sci Rev, 2023
Frey HU   +7 more
europepmc   +1 more source

Helicopter Pilot Performance for Discrete-maneuver Flight Tasks [PDF]

open access: yes, 1984
This paper describes a current study of several basic helicopter flight maneuvers. The data base consists of in-flight measurements from instrumented helicopters using experienced pilots. The analysis technique is simple enough to apply without automatic
Bourne, S. M.   +2 more
core   +1 more source

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

open access: yesAdvanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro   +13 more
wiley   +1 more source

Neuroendocrinal and molecular basis of flight performance in locusts. [PDF]

open access: yesCell Mol Life Sci, 2022
Hou L, Guo S, Ding D, Du B, Wang X.
europepmc   +1 more source

Space radiation studies [PDF]

open access: yes
Two Active Radiation Dosimeters (ARD's) flown on Spacelab 1, performed without fault and were returned to Space Science Laboratory, MSFC for recalibration. During the flight, performance was monitored at the Huntsville Operations Center (HOSC).

core   +1 more source

Visual analytics of flight trajectories for uncovering decision making strategies [PDF]

open access: yes, 2018
In air traffic management and control, movement data describing actual and planned flights are used for planning, monitoring and post-operation analysis purposes with the goal of increased efficient utilization of air space capacities (in terms of delay ...
Andrienko, G.   +7 more
core  

Effect of Atomic Layer Deposition of Ultra‐Thin Oxide on Reactivity and Durability of Perovskite Oxygen Electrodes

open access: yesAdvanced Materials, EarlyView.
This table of contents illustrates that the mechanism for mitigating Sr segregation depends strongly on the chemistry of the coating layer. HfO2 electrostatically stabilizes the surface by lowering the surface oxygen vacancies, which serve as the driving force for Sr migration. On the other hand, Al2O3 and Fe2O3 react with segregated Sr to form Sr‐Al‐O
Jongsu Seo   +8 more
wiley   +1 more source

Improved Orbiter Waste Collection System Study, Appendix D [PDF]

open access: yes
Basic requirements for a space shuttle orbiter waste collection system are established. They are intended to be an aid in the development and procurement of a representative flight test article.

core   +1 more source

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