Results 141 to 150 of about 63,753 (279)
A Quiet Helicopter for Air Taxi Operations [PDF]
NASA is exploring rotorcraft designs for VTOL air taxi operations, also known as urban air mobility (UAM) or on-demand mobility (ODM) applications. Several concept vehicles have been developed, intended to focus and guide NASA research activities in ...
Johnson, Wayne
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Periodontology 2000, EarlyView.Abstract The aim of this comprehensive review was to evaluate comparative studies on horizontal and fixed‐angle centrifugation methods for preparing platelet‐rich fibrin (PRF). Furthermore, additional studies utilizing horizontal PRF (H‐PRF) were systematically investigated.
Nima Farshidfar +6 more
wiley +1 more source
Tri-Rotor Aircraft Capable of Vertical Takeoff and Landing and Transitioning to Forward Flight [PDF]
Systems, methods, and devices provide a vehicle, such as an aircraft, with rotors configured to function as a tri-copter for vertical takeoff and landing ("VTOL") and a fixed-wing vehicle for forward flight.
Aull, Mark J. +6 more
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One day of environment‐induced heat stress causes injury to the murine kidney
Experimental Physiology, EarlyView.Abstract Environment‐induced heat stress (EIHS) results from sustained body temperature elevation owing to prolonged exposure to heat and humidity. We hypothesized that EIHS would cause kidney injury and cellular dysfunction. To test this hypothesis, female C57 mice were exposed to EIHS (n = 14; 37.6°C, 42.0% relative humidity) or thermoneutral (TN ...
Melissa Roths +3 more
wiley +1 more source
Results of the flight noise measurement program using a standard and modified SH-3A helicopter [PDF]
A field noise measurement program has been conducted using both a standard SH-3A helicopter and an SH-3A helicopter modified to reduce external noise levels.
Henderson, H. R. +2 more
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The Journal of Physiology, EarlyView.Abstract figure legend In silico trials were conducted in 654 virtual patients with atrial fibrillation (AF) to assess the cardioversion efficacy of three pharmacological treatments: single SK and K2P channel block and combined SK+K2P channel inhibition. Left: representative virtual AF patient with the atria inside the torso.
Albert Dasí +4 more
wiley +1 more source
Aeroelastic characteristics of the AH-64 bearingless tail rotor [PDF]
The results of a wind tunnel test program to determine the performance loads and dynamic characteristics of the Composite Flexbeam Tail Rotor (CFTR) for the AH-64 Advanced Attack Helicopter are reported.
Banerjee, D.
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Atrial fibrosis in atrial fibrillation: Mechanisms, mapping techniques and clinical applications
The Journal of Physiology, EarlyView.Abstract figure legend Summary of key aspects of atrial fibrosis in atrial fibrillation, highlighting atrial fibrosis as a hallmark of atrial fibrillation (AF). (1) Different types of fibrosis (blue), illustrating reparative and reactive fibrosis; (2) fibrosis detection techniques (green), illustrating late gadolinium enhancement cardiac magnetic ...
Caterina Vidal Horrach +8 more
wiley +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend We used an intersectional approach with recombinase‐expressing mice and adeno‐associated virus to map and modulate distinct nociceptive afferents in the vagal ganglia. TRPV1+P2X2+ neurons resided in the nodose ganglion (N), innervated the lungs (many projected into the alveoli) but not the trachea, and projected to the nucleus ...
Mayur J. Patil +11 more
wiley +1 more source
Calculated Dynamic Characteristics of a Soft-Inplane Hingeless Rotor Helicopter [PDF]
Calculated dynamic characteristics of a representative soft-inplane hingeless rotor helicopter are presented. The flight dynamics as a function of speed and gross weight are given. The requirements for accurate analytical modelling of this helicopter are
Johnson, W.
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