Results 71 to 80 of about 339,839 (317)

Calculated effect of various types of flap on take-off over obstacles [PDF]

open access: yes
In order to determine whether or not flaps could be expected to have any beneficial effect on take-off performance, the distances required to take off and climb to an altitude of 50 feet were calculated for hypothetical airplanes, corresponding to ...
Wetmore, J W
core   +1 more source

Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review

open access: yesAdvanced Science, EarlyView.
Recent advances in materials and device engineering enable continuous, real‐time monitoring of muscle activity via wearable and implantable systems. This review critically summarizes emerging technologies for tracking electrophysiological, biomechanical, and oxygenation signals, outlines fundamental principles, and highlights key challenges and ...
Zhengwei Liao   +4 more
wiley   +1 more source

Wind tunnel test results of a new leading edge flap design for highly swept wings, a vortex flap [PDF]

open access: yes
A leading edge flap design for highly swept wings, called a vortex flap, was tested on an arrow wing model in a low speed wind tunnel. A vortex flap differs from a conventional plain flap in that it has a leading edge tab which is counterdeflected from ...
Middleton, W. D.   +2 more
core   +1 more source

Conjunctival flaps

open access: yesOphthalmology, 1998
The authors reviewed their experience with total conjunctival flaps (TCF) and partial conjunctival flaps (PCF) for the past 5 years in 61 patients.Forty-eight patients had TCF and 13 had PCF. Diagnoses for surgery included severe bullous keratopathy for chronic graft failure (not candidates for keratoplasty) (19), herpes zoster ophthalmicus (7 ...
A M, Alino   +4 more
openaire   +2 more sources

Hungry for Knowledge: Octopamine Signaling Regulates Hunger‐Enhanced Olfactory Learning

open access: yesAdvanced Science, EarlyView.
Researchers demonstrate that hunger state facilitates both aversive and appetitive olfactory learning. Two distinct octopamine signaling pathways are involved in aversive or appetitive memory formation in the hunger state. And, hunger state also facilitates the formation of both types of memories via an evolutionarily conserved norepinephrine (the ...
Huijuan Zhao   +14 more
wiley   +1 more source

Analysis of Surgical Treatments for Circumferentially Protruding Haemorrhoids: Complete Excision with Repair Using Flaps Versus Primary Excision with Secondary Suture-ligation

open access: yesAsian Journal of Surgery, 2006
Circumferentially protruding haemorrhoids (CPH) are troublesome lesions for both patients and surgeons, and in most cases demand surgical intervention. However, such surgery carries the risks of complications and recurrence.
Jin C. Kim
doaj   +1 more source

Wind-Tunnel Investigation of the Effect of Tab Balance on Tab and Control-Surface Characteristics [PDF]

open access: yes
An investigation was conducted to furnish data on the effect of tab balance on tab and control-surface characteristics. The airfoil tested had a modified NACA 65(1)-012 contour with a plain flap having a chord equal to 25 percent of the wing chord and ...
Brewer, Jack D, Queijo, M J
core   +1 more source

Experimentally determined flutter from two- and three-bladed model bearingless rotors in hover [PDF]

open access: yes, 1985
A series of experiments was performed on a 1.8-m-diam model rotor in hover for the principal purpose of investigating the lead-lag stability of isolated bearingless rotors.
Bousman, W. G., Dawson, S.
core   +1 more source

Bioinspired Tissue Transparency: Achieving Sclera‐to‐Cornea Transplantation

open access: yesAdvanced Science, EarlyView.
A bioinspired decellularization‐compression‐locking tactic (DCLT) is developed to transform human sclerae into transparent corneal substitutes. These clear, robust, and pro‐regenerative substitutes are capable of repairing complex corneal injuries, including chemical burns, keratoconus, and penetrating wounds, demonstrating their clinical potential to ...
Xiuli Sun   +8 more
wiley   +1 more source

A mathematical model of a tilt-wing aircraft for piloted simulation [PDF]

open access: yes
A mathematical model of a tilt-wing aircraft that was used in a piloted, six-degree-of-freedom flight simulation application is described. Two types of control systems developed for the math model are discussed: a conventional, programmed-flap wing-tilt ...
Totah, Joseph J.
core   +1 more source

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