نتایج جستجو برای: hover flies
تعداد نتایج: 15860 فیلتر نتایج به سال:
This is the first record for the subfamily Psychodinae from Ecuador and a new species belonging to genus Arisemus, A. triconnectus, is described.
Background and Aim: Sand flies are responsible for transmission of leishmaniasis, papatasi fever and carrion disease. Warning of sand fly population is the first step for the establishment of baseline data for the vector control operations of visceral leishmaniasis (VL). In order to attempt to the difference between species composition and bieocology of sand flies, the comparative research was...
A quasi one-dimensional analysis of a STOVL aircraft nozzle in hover is performed to estimate the gross thrust coefficient as a function of nozzle pressure and nozzle area ratios. The analysis is supported by subscale, cold flow test results. The nozzle performance was found to be less than desirable in hover due to the overexpansion arising from the geometrical constraints of the existing nozzle.
Myiasis is always resulted by depositionof egg or young larvae of cyclorrhapha flies’ in live tissus of human or animals,which follows by their Development. Although the survival of mentioned larves is depended on existance of livestock and wild animals, the flies can be seen in parks, dairy farms and certain plants and also solid wasts waiting for proper hosts. The frequent study was carr...
This paper presents vehicle models and test flight results for an autonomous fixed-wing aircraft with the capability to take off, hover, transition to and from level-flight, and perch on a vertical landing platform. These maneuvers are all demonstrated in the highly space constrained environment of the Real-time indoor Autonomous Vehicle test ENvironment (RAVEN) at MIT. RAVEN promotes the rapid...
No field failure of azinphosmethyl had been noticed in controlling codling moth from Oregon until 1989. However, in a study conducted by Moffitt et al. during 1986 to 1987, a codling moth population from Medford has been reported resistant to diflubenzuron. It was suspected that selection by other commonly used compounds was probably responsible for this resistance. We initiated our work in 198...
Background and Aim: The flies are important for the mechanical transmission of pathogens, disease myiasis and forensic entomologist studies in the area. Detection and identification of species in different area, the first and most important Method to control vector-borne diseases in the area. Methods: This is a Descriptive - Cross-sectional study that was sampling in two urban and rural parts, ...
Introduction: The cutaneous leishmaniasis has been regularly spread in Iran. Jask County which has been located in the eastern part of Hormozgan province had the most cases of patients. The present study aimed to investigate on the fauna and biology of sand flies. Methods: In this descriptive, cross sectional study, during 2007-2008, sand flies were captured using sticky papers and CDC mi...
TRANSITIONS BETWEEN HOVER AND LEVEL FLIGHT FOR A TAILSITTER UAV Stephen R. Osborne Department of Electrical and Computer Engineering Master of Science Vertical Take-Off and Land (VTOL) Unmanned Air Vehicles (UAVs) possess several desirable characteristics, such as being able to hover and take-off or land in confined areas. One type of VTOL airframe, the tailsitter, has all of these advantages, ...
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