Results 91 to 100 of about 2,939,482 (385)

JANNAF liquid rocket combustion instability panel research recommendations [PDF]

open access: yes
The Joint Army, Navy, NASA, Air Force (JANNAF) Liquid Rocket Combustion Instability Panel was formed in 1988, drawing its members from industry, academia, and government experts.
Klem, Mark D.
core   +4 more sources

Characteristics of aeroelastic instabilities in turbomachinery - NASA full scale engine test results [PDF]

open access: yes
Several aeromechanical programs were conducted in the NASA/USAF Joint Engine System Research Programs. The scope of these programs, the instrumentation, data acquisition and reduction, and the test results are discussed.
Lubomski, J. F.
core   +1 more source

Mechanical stability, muscle strength and proprioception in the functionally unstable ankle [PDF]

open access: yes, 1994
Functional instability of the ankle is common following inversion sprain. Factors suggested as causes of this disability include mechanical instability of the talocrural joint, peroneal muscle weakness and motor incoordination due to impaired ...
Ryan, Luke
core   +1 more source

Advanced Air Electrodes for Reversible Protonic Ceramic Electrochemical Cells: A Comprehensive Review

open access: yesAdvanced Materials, EarlyView.
Reversible protonic ceramic electrochemical cells (R‐PCECs) face challenges from sluggish and unstable oxygen reduction and evolution reactions in the air electrode. This review discusses recent progress in triple‐conducting air electrodes, emphasizing mechanisms, performance factors, and design strategies, offering guidance for creating efficient and ...
Xi Chen   +8 more
wiley   +1 more source

Recent Advances in Wide‐Bandgap Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
wiley   +1 more source

Weightbearing Computed Tomography Can Accurately Detect Subtle Lisfranc Instability

open access: yesFoot & Ankle Orthopaedics
Category: Midfoot/Forefoot; Trauma Introduction/Purpose: Early detection of Lisfranc instability is critical for improving clinical outcomes, but more subtle instability can be difficult to diagnose.
Rohan Bhimani MD   +6 more
doaj   +1 more source

Temporomandibular disorder and generalized joint hypermobility: application of diagnostic criteria Disfunção têmporo-mandibular e hipermobilidade articular generalizada: aplicação de critérios diagnósticos

open access: yesBrazilian Journal of Otorhinolaryngology, 2011
Generalized joint hypermobility (GJH) has been considered a predisposing factor for the development of temporomandibular disorder (TMD). AIM: To evaluate clinical and psychosocial aspects in individuals diagnosed with TMD with or without GJH.
Fernanda Pasinato   +3 more
doaj   +1 more source

Joint dislocation [PDF]

open access: yes, 2014
A joint dislocation, or luxation occurs when there is an abnormal separation in the joint, where two or more bones meet. A partial dislocation is referred to as a subluxation.
Abu, Ashekh Malek
core  

Carbon Fiber Reinforced Thermoplastics: From Materials to Manufacturing and Applications

open access: yesAdvanced Materials, EarlyView.
A contemporary and critical review on carbon fiber reinforced thermoplastics. The common thermoplastic and carbon fiber applied in the manufacture of carbon fiber reinforced thermoplastics are summarized, and the processing and postprocessing methods are reviewed, with emphasis on state‐of‐the‐art welding techniques.
Howard (Hao) Wang   +6 more
wiley   +1 more source

Sternoclavicular Joint Reconstruction in the Setting of Medial Comminuted Clavicle Fracture

open access: yesArthroscopy Techniques, 2017
A dislocation of the sternoclavicular joint is a particularly threatening injury given the close proximity of neighboring vital structures. Moreover, a traumatic injury resulting in a comminuted fracture of the medial clavicle in addition to joint ...
George Sanchez, B.S.   +4 more
doaj  

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