Results 151 to 160 of about 890,762 (338)
Patterns and drivers of biotic disturbance hotspots in western United States coniferous forests
Ecography, EarlyView.Globally, forest disturbances caused by herbivorous insects and plant pathogens (i.e. biotic disturbances) have increased since the 1990s, a trend linked in part to climate warming. With increases in biotic disturbance activity, an emerging ecological phenomenon has been documented: biotic disturbance ‘hotspots', or areas where two or more biotic ...
Michele S. Buonanduci +3 more
wiley +1 more source
Advanced subsonic transport approach noise: The relative contribution of airframe noise [PDF]
With current engine technology, airframe noise is a contributing source for large commercial aircraft on approach, but not the major contributor. With the promise of much quieter jet engines with the planned new generation of high-by-pass turbofan ...
Garber, Donald P. +1 more
core +1 more source
Tightly Coupled GNSS and Vision Navigation for Unmanned Air Vehicle Applications [PDF]
, 2005 This paper explores the unique benefits that can be obtained from a tight integration of a GNSS sensor and a forward-looking vision sensor. The motivation of this research is the belief that both GNSS and vision will be integral features of future UAV ...
O'Shea, Peter +2 more
core +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.The BST interlayer, with high dielectric constant and piezoelectric properties, enhances Li+ de‐solvation and regulates lithium deposition. This dual functionality ensures improved ionic conductivity, uniform Li plating, and extended cycling stability in hybrid solid–liquid lithium metal batteries, demonstrating the potential for safer and more durable
Zhen Chen +8 more
wiley +1 more source
Aerodynamic Noise and the Estimation of Noise in Aircraft [PDF]
, 1952 O. R. Rogers, Robert F. Cook
openalex +1 more source
Environmental Policy and Governance, EarlyView.ABSTRACT Wildfires in Southern European Mediterranean regions, exacerbated by climatic conditions and human activity, pose significant threats to ecosystems and human well‐being. Current fire management policies tend to prioritize fire exclusion, neglecting traditional land use practices and socio‐ecological interactions underlying the human–fire ...
Erika Piroli +3 more
wiley +1 more source
Energy Science &Engineering, EarlyView.ABSTRACT Environmental hazards and the growing demand for fossil fuels are two major current concerns. The current global situation requires extensive research on renewable fuels. In this experimental study, we investigated different blends of biodiesel derived from litchi seed oil, which is inedible, for engine performance, emissions, and tribological
Tahir Asif +7 more
wiley +1 more source
Flight test to determine feasibility of a proposed airborne wake vortex detection concept [PDF]
This investigation was conducted to determine the radial extent at which aircraft mounted flow vanes or roll rate gyros can sense the circulatory flow field that exists around the lift induced vortex system generated by an aircraft in flight.
Branstetter, James R. +2 more
core +1 more source