Results 31 to 40 of about 190 (76)

Numerical 3D study on the influence of spanwise distribution of tubercles on wings for UAV applications [PDF]

open access: yesMATEC Web of Conferences, 2019
In this work, a 3D numerical study on the influence of the spanwise distribution of tubercles for UAV applications is presented. The idea of using tubercles in aeronautics comes from the humpback whale (Megaptera novaeangliae) which has a characteristic ...
Papadopoulos Charalampos   +2 more
doaj   +1 more source

Development of GaN Technology-Based DC/DC Converter for Hybrid UAV

open access: yesIEEE Access, 2020
Wide band-gap (WBG) semiconductors technology represents a potential candidate to displace conventional silicon (Si) technology used in power electronics.
Juana M. Martinez-Heredia   +5 more
doaj   +1 more source

Contemporary Haqiqī Calculation: Analysis of Rinto Anugraha's Lunar Eclipse Calculation Methods

open access: yesJournal of Islamic Law, 2022
Classical Islamic astronomy literature that discusses eclipse calculations still uses the ḥaqiqī bi al-taqrīb method with low accuracy. In its development, Islamic astronomical literature studies the calculation of lunar eclipses with high accuracy ...
'Alamul Yaqin
doaj   +1 more source

Nonlinear Least-Squares Based Method for Identifying and Quantifying Single and Mixed Contaminants in Air with an Electronic Nose

open access: yesSensors, 2005
The Jet Propulsion Laboratory has recently developed and built an electronic nose(ENose) using a polymer-carbon composite sensing array. This ENose is designed to be usedfor air quality monitoring in an enclosed space, and is designed to detect, identify
Margaret A. Ryan   +3 more
doaj   +1 more source

Accidents and injuries related to paragliding on mount Babadağ, Turkey: A cross-sectional study

open access: yesTurkish Journal of Emergency Medicine, 2023
OBJECTIVES: In light of the growing popularity of paragliding, this cross-sectional study aimed to investigate the epidemiology of paragliding accidents, providing insights into the types and severity of injuries sustained as well as the body regions ...
Ömer Faruk Karakoyun, Yalcin Golcuk
doaj   +1 more source

Modelling the Effects of Meteorological Factors on Maximum Rainfall Intensities Using Exponentiated Standardized Half Logistic Distribution

open access: yesJournal of Applied Mathematics, 2022
Rainfall intensity prediction or forecast is vital in designing hydraulic structures and flood and erosion control structures. In this work, meteorological data were obtained from the National Aeronautics and Space Administration’s (NASA) website. Models
B. F. Sasanya   +3 more
doaj   +1 more source

Indoor Radar Cross Section Measurements of Simple Targets

open access: yesJournal of Aerospace Technology and Management, 2012
This paper has described the radar absorbing materials characterization and radar cross section measurements, in the frequency range of 8 to 12 GHz, using a very simple setup.
Marcelo Alexandre Souza Miacci   +4 more
doaj   +1 more source

Evaluation of Four Reanalysis Datasets against Radiosonde over Southwest Asia

open access: yesAtmosphere, 2020
Upper-air observational networks in Southwest Asia (SWA) are geographically sparse and reanalysis datasets (RDs) are a typical alternative. However, RDs can perform with varying degrees of quality and accuracy due to differences in assimilation schemes ...
Ali S. Alghamdi
doaj   +1 more source

Novel CNTs grafting on carbon fibres through CVD: investigation of epoxy matrix/fibre interface via nanoindentation [PDF]

open access: yesMATEC Web of Conferences, 2019
Carbon Fibre Reinforced Polymers (CFRPs) have spread to a broad range of sectors including automobile, aeronautics and space industry the last decades.
Termine Stefania   +3 more
doaj   +1 more source

Non-invasive electrodiagnostic testing for small fibre neuropathy in long COVID-19

open access: yesBMJ Neurology Open
Background Long COVID-19 is associated with a diverse range of debilitating neuropathic and autonomic symptoms that may indicate small fibre neuropathy (SFN).
Anthony Khoo   +3 more
doaj   +1 more source

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