Results 191 to 200 of about 815,050 (359)
Drivers of plant community composition and diversity in low Arctic western Greenland
Ecography, EarlyView.The Arctic experiences rapid climate change, but our ability to predict how this will influence plant communities is hampered by a lack of data on the extent to which different species are associated with particular environmental conditions, how these conditions are interlinked, and how they will change in coming years.
Jacob Nabe‐Nielsen +2 more
wiley +1 more source
A Suggested Approach to the Problem of Providing High-Altitude Wind Forecasts for Jet Transport Operations [PDF]
, 1958 Louis Harmantas, S. G . Simplicio
openalex +1 more source
Ecography, EarlyView.Species distribution models (SDMs) analyse the relationships between species occurrences and environmental predictors. Their efficacy largely depends on the selection of ecologically relevant predictors, with remote sensing (RS) data being one of the most commonly used sources. The usability of multispectral predictors is influenced by temporal changes
Dominika Prajzlerová +4 more
wiley +1 more source
Application of trajectory optimization techniques to upper atmosphere sampling flights using the F4-C Phantom aircraft [PDF]
Altitude potential of an off-the-shelf F4-C aircraft is examined. It is shown that the standard F4-C has a maximum altitude capability in the region from 85000 to 95000 ft, depending on the minimum dynamic pressures deemed acceptable for adequate flight ...
Hague, D. S., Merz, A. W.
core +1 more source
II. A spirit level to be fixed to a quadrant for taking a meridional altitude at sea, when the horizon is not visible [PDF]
J. L. Hadley
openalex +1 more source
A Comparative Life Cycle Assessment of Residential Heating Systems in Tehran, Iran
Energy Science &Engineering, EarlyView.ABSTRACT Environmental pollution from different gas heating systems in residential buildings has significant impacts, especially in urban areas due to their high density. This study conducts a comparative life cycle assessment of two commonly used residential heating systems in Tehran: the Central Boiler Room (CBR) and the wall‐hung boiler (WHB). Using
Hossein Vahidi, Mohsen Esfahanizadeh
wiley +1 more source
Effect of limb darkening on earth radiation incident on a spherical satellite [PDF]
The thermal radiation from the earth incident on a spherical satellite depends on the angular distribution of earth-emitted radiation. An analysis is presented of this dependency, and calculated results are given, based on a published limb-darkening ...
Katzoff, S., Smith, G. L.
core +1 more source
Effect of Sand Particle Size on Sand–Water Flow in a Francis‐99 Distributor
Energy Science &Engineering, EarlyView.ABSTRACT To examine the sand–water flow characteristics in the distributor of the Francis‐99 hydraulic turbine, numerical simulations were conducted using the Mixture multiphase flow model, focusing on the impact of varying sand particle sizes. The findings indicate that near‐wall velocities of sand and water in the fixed and guide vanes of the ...
Ziyao Zhou +7 more
wiley +1 more source