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Impact of Typhoon on Evaporation Duct in the Northwest Pacific Ocean
IEEE Access, 2019 Evaporation duct is a layer above the ocean surface due to the inherent humidity inversion at the air-sea boundary layer. The formation of the duct depends on meteorological factors near the ocean surface and is affected by weather process above the ...
Yang Shi +5 more
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Ocean surface duct propagation. II. A simple accurate model for surface duct propagation loss [PDF]
The Journal of the Acoustical Society of America, 1978 A simple accurate model has been devised for ocean surface duct propagation. The model assumes the following form for the propagation loss: P.L. = 60 + 10 logrT + 10 logr − “gain,” where the transition range from spherical to cylindrical spreading, rT, is computed from the limiting ray for the duct, and the “gain” term is computed using the normal ...
openaire +1 more source
Drones, 2023 Ducted UAVs have attracted much attention because the duct structure can reduce the propeller tip vortices and thus increase the effective lift area of the lower propeller.
Huarui Xv +5 more
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Developing an effective deflector for duct natural ventilation [PDF]
E3S Web of Conferences, 2023 Information is given on increasing the available gravitational pressure of natural duct ventilation by increasing the use of wind flow energy. The scheme and operation of the developed deflector with a vertical finned cylindrical surface based on the CAI
Averkin A.G., Eremkin A.I., Sergeev M.O.
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Sir Syed University Research Journal of Engineering and Technology, 2020 The propagation of microwave (MW) of frequencies above 300 MHz is affected by the existence and properties of the atmospheric duct. Atmospheric ducts exist in many areas of the world ocean, including the Arabian Sea.
Imran Ullah Khan
doaj
The Stable Trajectory Tracking Control of a Skid-Steered Mobile Platform with Dynamic Uncertainties
International Journal of Advanced Robotic Systems, 2015 In order to clean the surfaces of air ducts in underground facilities, recent research has been conducted on driving the control and development of an autonomous mobile duct-cleaning platform. The duct-cleaning robots removes contaminants that are inside
Seungwoo Jeon, Wootae Jeong
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A Case of Intraductal Papillary Neoplasm of the Bile Duct with Stromal Invasion
Case Reports in Gastroenterology, 2008 Intraductal papillary neoplasm of the bile duct (IPNB) represents biliary papillary tumors mainly growing and is considered to be of relatively low-grade malignancy.
Atsushi Nanashima +10 more
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BMC Ophthalmology, 2023 Background Primary acquired nasolacrimal duct obstruction (PANDO) is frequently encountered in perimenopausal women, causing tear flow stagnation and resulting in a variety of ocular discomfort symptoms.
Haili Jin, Hong Zhang
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The acoustics of curved and lined cylindrical ducts with mean flow
, 2010 This thesis considers linear perturbations to the steady flow of a compressible inviscid perfect gas along a cylindrical or annular duct. Particular consideration is given to the model of the duct boundary, and to the effect of curvature of the duct ...
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The Impact of Surface Discontinuities on MEMS Thermal Wind Sensor Accuracy
Sensors, 2023 A 2D calorimetric flow transducer is used to study distortions of the flow velocity field induced by small surface discontinuities around the chip. The transducer is incorporated into a matching recess of a PCB enabling wire-bonded interconnections to ...
Almir Talic +5 more
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