Results 71 to 80 of about 783 (209)

Only One Percent of Important Shark and Ray Areas in the Western Indian Ocean Are Fully Protected From Fishing Pressure

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
Delineation of Important Shark and Ray Areas (ISRAs) In the Western Indian Ocean was enhanced by the verification and incorporation of unpublished records. Even with this expanded dataset, ~99% of ISRA coverage fell outside of fully protected, no‐take MPAs.
Jesse E. M. Cochran   +132 more
wiley   +1 more source

Study on the Fast Extension Mechanism of Double-Cavity Shock Absorber with High-Pressure Piston

open access: yesInternational Journal of Aerospace Engineering, 2021
Double-cavity shock absorber with high-pressure piston is the core component of the nose landing gear of the carrier-based aircraft, and its fast-extension performance seriously affects the safety of the catapult-assisted takeoff. The design of a carrier-
Xingbo Fang   +3 more
doaj   +1 more source

Lateral response of nose-wheel landing gear system to ground-induced excitation

open access: yes, 2007
Nose-wheel landing gears can become laterally unstable during takeoff, taxiing, and landing, exhibiting divergent. coupled lateral flexural and torsional oscillations called shimmy.
SURYANARAYAN, S, SURA, NK
core   +1 more source

Integrating Composite Materials Throughout the Military Sector: A Review

open access: yesAdvances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
Composite materials have attracted considerable attention in the defense industry owing to their distinctive properties and wide‐ranging applications. This systematic review examines the current research landscape and recent advancements in the application of composite materials for defense purposes.
Mikru Birhan   +4 more
wiley   +1 more source

Aerodynamic Characteristics and Control Strategy Design of a Variable Vertical Tail Morphing Aircraft

open access: yesInternational Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
The research object of this paper is a novel morphing aircraft. The V‐tail is a tiltable heading stabilizer that can be deflected in the range of 0°~75° continuously. According to the mission requirements, the aircraft can be transformed into stealth flying wings and high mobility layout configuration; the “scorpion tail” at the rear of the fuselage is
Jin Liu   +6 more
wiley   +1 more source

Military Forensic Archaeology: The Process and Recovery of U.S. Missing‐in‐Action (MIA) Service Personnel

open access: yesWIREs Forensic Science, Volume 7, Issue 4, December 2025.
The search for and investigation of Missing‐in‐Action (MIA) United States (U.S.) service personnel requires a flexible use of standard archaeological procedures and methods to recover physical and biological traces (evidence) that could lead to a personal identification as well as guide the excavation strategy and extent.
William R. Belcher   +4 more
wiley   +1 more source

GL‐algebras in positive characteristic II: The polynomial ring

open access: yesProceedings of the London Mathematical Society, Volume 131, Issue 6, December 2025.
Abstract We study GL$\mathbf {GL}$‐equivariant modules over the infinite variable polynomial ring S=k[x1,x2,…,xn,…]$S = k[x_1, x_2, \ldots, x_n, \ldots]$ with k$k$ an infinite field of characteristic p>0$p > 0$. We extend many of Sam–Snowden's far‐reaching results from characteristic zero to this setting.
Karthik Ganapathy
wiley   +1 more source

Shimmy in a nonlinear model of an aircraft nose landing gear with non-zero rake angle

open access: yes, 2008
This work concentrates on the lateral oscillations in vehicles, also called shimmy, with a particular emphasis on aircraft. A mathematical model of a nose landing gear is discussed with geometric detail that has been mostly neglected in the past research.
Thota, P, Lowenberg, MH, Krauskopf, B
core  

Pesticide Exposure and Parkinson's Disease: A Qualitative Study of Experiences in Ireland

open access: yesHealth Expectations, Volume 28, Issue 5, October 2025.
ABSTRACT Introduction Parkinson's disease (PD) is a common neurodegenerative disorder, affecting an estimated 10 million people globally, and its incidence rate is rising rapidly. PD most commonly develops sporadically, with only 5%–10% of cases linked to genetic causes. Environmental factors, including exposure to pesticides, have been associated with
Lucy M. Collins   +4 more
wiley   +1 more source

Airworthiness verification of additive manufacturing technology for large integral metallic structure

open access: yesJournal of Aeronautical Materials, 2019
In order to solve the problems existing in airworthiness verification of the large integral metallic structure for civil aircraft main bearing part, the airworthiness verification of the metallic structure additive manufacturing technology was carried ...
JIANG Wu   +3 more
doaj   +1 more source

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