نتایج جستجو برای: carreau bird
تعداد نتایج: 24591 فیلتر نتایج به سال:
Bird strikes usually occur due to the entry of aircraft into the bird layer, i.e. the region up to which birds fly in the sky and are common during landing or takeoff 1. Along with the financial losses, bird strike also reduces the mission capability of the crew, loss of flying hours, permanent damages to the aircraft and importantly , it is always associated with the risk of mortality 2–6. The...
Grassland bird species have experienced substantial declines in North America. These declines have been largely attributed to habitat loss and degradation, especially from agricultural practices and intensification (the habitat-availability hypothesis). A recent analysis of North American Breeding Bird Survey (BBS) "grassland breeding" bird trends reported the surprising conclusion that insecti...
No abstract this article:Molecular Surveillance of Avian Influenza in Live Bird Market of Qom City in Iran
One of the main causes death is atherosclerosis so, in this work, two models stenosed arteries have been executed numerically to assess hemodynamic effects caused by flow disruptions. Using Computational Fluid Dynamics (CFD) provide information public, particularly surgeons, and assist them reducing risk stenosis. Star-CCM+ software was used perform CFD techniques such as steady, turbulent, non...
We examined avian community ecology in the Klamath Ecoregion and determined that individual bird species co-exist spatially to form 29 statistically distinguishable bird groups. We identified climate, geography, and vegetation metrics that are correlated with these 29 bird groups at three scales: Klamath Ecoregion, vegetation formation (agriculture, conifer, mixed conifer/hardwood, shrubland), ...
By systematically setting up a unique nation-wide wild bird surveillance network, we monitored migratory and resident birds for zoonotic arthropod-borne virus infections, such as the flaviviruses West Nile virus (WNV) and Usutu virus (USUV). More than 1900 wild bird blood samples, from 20 orders and 136 different bird species, were collected between 2014 and 2016. Samples were investigated by W...
OBJECTIVES To evaluate the risk factors for the development of occupational allergy to birds among Polish zoo garden keepers. METHODS A total of 200 bird zookeepers employed in the Polish zoo gardens in KLódź, Warsaw, Gdańsk, Chorzów and Płock and exposed occupationally to bird allergens were examined using a questionnaire, skin prick tests (SPTs) to common allergens and bird allergens, spiro...
Studies in Europe have reported negative effects of acid deposition on forest birds, and research in North America has identified links between forest bird abundance and rates of acid deposition. We examined the bird community in an acidified forest in central Pennsylvania (USA) and evaluated the effects of terrestrial lime application on birds. We used a before-after control-impact (BACI) stud...
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