Results 11 to 20 of about 41,220 (298)
Science, 2014 ![Figure][1] PHOTO: (CLOCKWISE) © PAUL SOUDERS/CORBIS; © PETER JOHNSON/CORBIS; © ALFRED SCHAUHUBER/IMAGEBROKER/CORBIS; © MICHAEL MELFORD/NATIONAL GEOGRAPHIC SOCIETY/CORBIS; © JAN VAN DER GREEF/BUITEN-BEELD/MINDEN PICTURES/CORBIS; © JARED HOBBS/ALL CANADA PHOTOS/CORBIS ...
Zhang, Guojie +2 more
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The flock–to–flock force of infection for scrapie in Britain [PDF]
Proceedings of the Royal Society of London. Series B: Biological Sciences, 2001 A postal survey of British sheep farmers provided information on the proportion of farms that experienced their first case of scrapie in each year between 1962 and 1998. We found no evidence of a large increase in the proportion of scrapie-affected farms prior to, during or following the epidemic of BSE in British cattle.
Gravenor, M +4 more
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Examination of Ornithobacterium rhinotracheale presence and pathomorphological changes in broiler respiratory organs in intensive broiler production [PDF]
Acta Veterinaria, 2012 Three flocks of broilers from the epizootiological region of South Banat, Serbia were chosen for examination, one flock with manifestation of respiratory disorders and two control flocks without respiratory disorders.
Gavrilović P. +2 more
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Agriculture, 2021 A strategy to increase wool income for coarse wool (fibre diameter > 30 µm) producers through a transition to higher value medium wool (fibre diameter between 25 and 29 µm) was identified, with previous analyses allowing sheep feed demand increases to ...
Lydia J. Farrell +4 more
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European Journal of Combinatorics, 2001 A flock of a quadratic cone is a partition of a quadratic cone minus its vertex (in 3-dimensional projective space) into plane conics. These objects give rise to a lot of other interesting objects such as translation planes, elation generalized quadrangles, (herds of) ovals, ovoids, regular hyperbolic fibrations, etc. If the associated functions of the
BADER, LAURA, D. GHINELLI, T. PENTTILA
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Flocks, herds, and schools: A quantitative theory of flocking [PDF]
Physical Review E, 1998 We present a quantitative continuum theory of ``flocking'': the collective coherent motion of large numbers of self-propelled organisms. Our model predicts the existence of an ``ordered phase'' of flocks, in which all members of the flock move together with the same mean velocity.
John Toner, Yuhai Tu
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Chronology and Typology of Wallpaper in the World until the 19th Century A. D. and the Encounter of Qajar Courtiers with it [PDF]
پیکرهIntroduction: Wallpaper is one of the oldest and the most widely used decorations in interior architecture in the world, and it has undergone numerous changes so far.
Zahra Babaei Kalemasihi, Melika Yazdani
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Animals, 2021 Group level measures of welfare flocks have been criticized on the grounds that they give only average measures and overlook the welfare of individual animals. However, we here show that the group-level optical flow patterns made by broiler flocks can be
Sabine G. Gebhardt-Henrich +2 more
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Current Biology, 2020 Steven Portugal introduces the behavioral and aerodynamic underpinnings of aerial flocking in birds.
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An overview on optimal flocking [PDF]
Annual Reviews in Control, 2021 21 pages, 5 ...
Logan E. Beaver, Andreas A. Malikopoulos
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