Results 11 to 20 of about 886 (110)
Predation strongly limits demography of a keystone migratory herbivore in a recovering transfrontier ecosystem. [PDF]
Ecol Evol, 2022 The paper provides the first quantitative characterization of the demography of the blue wildebeest population in western Zambia ‐ one of Africa’s largest remaining migrations. Predation was the dominant cause of mortality, and mortality risk varied with position along the migratory route.
Watson F +14 more
europepmc +2 more sources
Indexing body condition of bighorn sheep: potential for concordance among independent investigators?
Wildlife Society Bulletin, Volume 47, Issue 3, September 2023., 2023 We explored the level of agreement among individuals who used palpation to index body condition of bighorn sheep (Ovis canadensis). Preliminary results suggested the investigators interpreted and applied scoring criteria similarly, despite their differing backgrounds.
Vernon C. Bleich, Brett P. Wiedmann
wiley +1 more source
Farm‐related injury deaths in Australia (2001–20)
Australian Journal of Rural Health, Volume 31, Issue 1, Page 52-60, February 2023., 2023 Abstract Objective To describe the agents, pattern and trends of unintentional farm fatalities in Australia (2001–2020). Methods Review of study of National Coronial Information System data. Design Descriptive. Setting Australia (2001–2020). Participants All cases involving fatal work and non‐work injury events on a farm. Main outcome measures Patterns
Tony Lower +2 more
wiley +1 more source
An interest‐based rights ethic for wildlife management and applications to behavioral training
Conservation Science and Practice, Volume 4, Issue 3, March 2022., 2022 Abstract The growing field of conservation and wild animal ethics has the potential to guide practitioners facing difficult management decisions. Drawing from previously established rights frameworks, we explore an applied ethic for wildlife managers and conservationists, outlining when there can be ethical justification and moral obligation to ...
Nathalie R. Sommer, Kristy M. Ferraro
wiley +1 more source
Full‐Field Displacement Measurements of Helicopter Rotor Blades Using Stereophotogrammetry
International Journal of Aerospace Engineering, Volume 2021, Issue 1, 2021., 2021 This study presents a stereophotogrammetry approach to achieve full‐field displacement measurements of helicopter rotor blades. The method is demonstrated in the wind tunnel test of a 2 m diameter rotor, conducted at the 5.5 m × 4 m Aeroacoustic Wind Tunnel of China Aerodynamics Research and Development Center (CARDC).
Chenglin Zuo +6 more
wiley +1 more source
Bio-based hybrid cabin door of ultralight helicopter with variable-axis fiber design
CEAS Aeronautical Journal, 2022 AbstractThis paper presents the development of an integrated technology concept for the production of semi-structural fiber composite aerospace components with a bio-based hybrid laminate structure. In this context, the high lightweight potential of a variable-axial hybrid fiber-reinforced laminates compared to a multiaxial laminate design is of ...
Rostislav Svidler, R. Rinberg
openaire +1 more source
Application of an Ultralight Aircraft to Aerial Surveys of Kangaroos on Grazing Properties [PDF]
, 1997 A Drifter ultralight aircraft was used as a platform for line-transect aerial surveys of three species of kangaroo in the sheep rangelands south-east of Blackall and north of Longreach in central-western Queensland in winter 1993 and 1994.
Beard, L. A., Grigg, G. C., Pople, A. R.
core +1 more source
An Aerial Deployed Unmanned Autonomous Glider for Cross-Channel Flight [PDF]
, 2015 This paper describes the technical and operational challenges of the first cross-Channel flight performed by an unmanned autonomous glider. The glider chosen for the attempt was a quarter scale Slingsby Type 45 Swallow.
Jabbal, M
core +3 more sources
Electro-jet engine: a jet engine without turbine - Part 2. Electric power generation [PDF]
INCAS BulletinThis part studies theoretically and experimentally the conversion of thermal energy directly into electrical energy. The experimental part was based on the recovery of a part of the heat lost to the cold source, i.e.
Sorin NUTU
doaj +1 more source
Rotary-wing MAV Modeling & Control for indoor scenarios [PDF]
, 2010 This paper is about modeling and control of Miniature Aerial Vehicles ¿MAVs for indoor scenarios, specially using, micro coaxial and quadrotor systems.
Barrientos Cruz, Antonio +3 more
core +1 more source