Results 1 to 10 of about 94,167 (304)

Near-Surface Thermodynamic Influences on Evaporation Duct Shape

open access: yesAtmosphere
This study utilizes in situ measurements and numerical weather prediction forecasts curated during the Coupled Air–Sea Processes Electromagnetic Ducting Research (CASPER) east field campaign to assess how thermodynamic properties in the marine ...
Sarah E. Wessinger   +3 more
doaj   +6 more sources

Estimation of Surface Duct Using Ground-Based GPS Phase Delay and Propagation Loss

open access: yesRemote Sensing, 2018
The propagation of Global Positioning System (GPS) signals at low-elevation angles is significantly affected by a surface duct. In this paper, we present an improved algorithm known as NSSAGA, in which simulated annealing (SA) is combined with the non ...
Qixiang Liao   +4 more
doaj   +3 more sources

4D fabrication of scaffolds facilitates the construction of cholangiocyte monolayers from human and mouse liver derived organoids [PDF]

open access: yesMaterials Today Bio
The blockage and absence of bile ducts lead to liver defects, highlighting the urgent need for effective regenerative solutions. Tissue engineering has emerged as an interdisciplinary solution for repairing and regenerating damaged bile duct tissue ...
Junzhi Li   +7 more
doaj   +2 more sources

Inversion for Inhomogeneous Surface Duct without a Base Layer Based on Ocean-Scattered Low-Elevation BDS Signals

open access: yesRemote Sensing, 2021
The anomalous propagation conditions, particularly the tropospheric ducts, severely impact the regular operation and performance evaluation of radio devices in the atmospheric boundary layer.
Xiaozhou Liu   +3 more
doaj   +1 more source

BEYOND-THE-HORIZON RADIO WAVE PROPAGATION AND SURFACE OBJECTS RADAR OBSERVATION IN THE NORTH-WESTERN AREA OF THE PACIFIC OCEAN [PDF]

open access: yesРадиофизика и электроника, 2016
In general, the coverage range of vessel navigation radars in different areas of the World Ocean is determined by radio wave propagation conditions in these areas.
F. V. Kivva   +2 more
doaj   +1 more source

Surface atmospheric duct over Svalbard, Arctic, related to atmospheric and ocean conditions in winter

open access: yesArctic, Antarctic, and Alpine Research, 2022
Atmospheric ducts could disturb radar detection and radio communication in the Arctic and risk increasing human activities under Arctic warming. It is an urgent need to understand atmospheric ducts in the Arctic, with distinct atmospheric systems and ...
Jinhuan Zhu   +6 more
doaj   +1 more source

Inversion Method of Regional Range-Dependent Surface Ducts with a Base Layer by Doppler Weather Radar Echoes Based on WRF Model

open access: yesAtmosphere, 2020
Ground clutter caused by variations of atmospheric refraction environment can occur when the weather radar is observing precipitation systems, especially in the presence of a tropospheric duct.
Xiaozhou Liu, Zhensen Wu, Hongguang Wang
doaj   +1 more source

Experimental Investigation of Heat Transfer and Pressure Drop in Square Metal Packed Duct with Different Boundary Heating [PDF]

open access: yesEngineering and Technology Journal, 2012
This paper presents experimental results of forced convection heat transfer and pressure drop across ( 12.5 * 12.5 * 100 cm ) square packed duct. The pad made of forty- eight metallic wrapping coil unit with (0.98 porosity ) and (26 W/m.°C thermal ...
Kifah H. Hilal
doaj   +1 more source

Large-eddy simulations of ducts with a free surface [PDF]

open access: yesJournal of Fluid Mechanics, 2003
This work studies the momentum and energy transport mechanisms in the corner between a free surface and a solid wall. We perform large-eddy simulations of the incompressible fully developed turbulent flow in a square duct bounded above by a free-slip wall, for Reynolds numbers based on the mean friction velocity and the duct width equal to 360, 600 and
Broglia   +5 more
openaire   +4 more sources

HEAT TRANSFER INSIDE BUILDING- CLADDING SOLAR COLLECTOR

open access: yesJournal of Engineering and Sustainable Development, 2020
In this work numerical and experimental investigation have been adopted to collect and store solar energy in exterior-wall cladding, Various improvements have been investigated inside and outside the duct to increase the efficiency of thermal heating ...
Ahmed Mohsin Abdulmalik   +3 more
doaj   +3 more sources

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