Results 181 to 190 of about 959,128 (342)
Developing a Policy Flight Simulator to Facilitate the Adoption of an Evidence-Based Intervention. [PDF]
IEEE J Transl Eng Health Med, 2018 Pennock MJ +6 more
europepmc +1 more source
Results of the 1992 NASA/JPL Balloon Flight Solar Cell Calibration Program [PDF]
The 1992 solar cell calibration balloon flight was completed on August 1, 1992. All objectives of the flight program were met. Forty-one modules were carried to an altitude of 119,000 ft (36.3 km).
Anspaugh, B. E., Weiss, R. S.
core +1 more source
Advanced Science, EarlyView.A programmable 2048‐element circular ultrasound array combined with a compact acoustic lens produces a thin “sound sheet” over a large field of view, and records echoes with wide angular diversity across the ring aperture. Coherence‐enhanced beamforming converts full‐matrix data into high‐contrast tomographic slices, delivering near‐diffraction‐limited
Qiu‐De Zhang +11 more
wiley +1 more source
An evaluation of head-up displays in civil transport operations [PDF]
To determine the advantages and disadvantages of head-up displays (HUD) in civil transport approach and landing operations, an operational evaluation was conducted on the flight simulator for advanced aircraft at Ames.
Bray, R. S., Lauber, J. K., Scott, B. C.
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Growth‐Like Swelling of 2D Precursors for Efficient Fabrication of Complex 3D Microstructures
Advanced Science, EarlyView.The growth‐like swelling process fills photocured polymers into the elastomeric microstructures, inducing a significant swelling deformation of microstructures that can be maintained in the absence of solvents. The growth‐like swelling process breaks through the dependence of swelling deformation on the solvents, thereby expanding the application of 3D
Xinkai Zhu +13 more
wiley +1 more source
Oil‐Coated Nanoplastics Induce Rapid Membrane Disruption and Severe Intestinal Injury
Advanced Science, EarlyView.Oil‐rich food contact dramatically amplifies MNP release from plastic takeout containers, producing oil‐coated nanoplastics with altered surface properties and rapid membrane‐disruptive effects. These particles cause severe intestinal barrier damage and immune dysfunction in mice, and risk modeling suggests that long‐term gastrointestinal burdens may ...
Ruwen Xie +17 more
wiley +1 more source
Use of high performance networks and supercomputers for real-time flight simulation [PDF]
In order to meet the stringent time-critical requirements for real-time man-in-the-loop flight simulation, computer processing operations must be consistent in processing time and be completed in as short a time as possible.
Cleveland, Jeff I., II
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Advanced Science, EarlyView.The ER's continuous tubular network is maintained by ER‐shaping proteins whose mutation or dysregulation contributes to neurodegenerative diseases. Here, we show that ER morphology sets the speed of Ca2+ store replenishment between firing events. Disrupting ER continuity slows intra‐ER Ca2+ redistribution from extracellular refill (SOCE) sites, driving
Valentina Davi +13 more
wiley +1 more source
A helicopter flight investigation of roll-control sensitivity, damping and cross coupling in a low altitude lateral maneuvering task [PDF]
A helicopter in-flight simulation was conducted to determine the effects of variations in roll damping, roll sensitivity, and pitch and roll rate cross-coupling on helicopter flying qualities in a low altitude maneuver.
Carico, D., Corliss, L. D.
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Hierarchical Artificial Muscle with Nonlinear Elasticity for Antagonistic and Cyclic Robotics
Advanced Science, EarlyView.We construct hierarchical muscles by plying nylon fibers around a heating wire. The hierarchical muscle shows a J‐shaped passive curve, which shows benefit in antagonistic muscle pair and work accumulation mechanism. We also develop a computational, first‐principle model to understand the physics of both active actuation stroke and passive J‐curve ...
Samuel Tsai +15 more
wiley +1 more source