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4篇 您的检索式:作者名="Geison"
    题名 作者 年代 出处 被引量
1Research Schools and New Directions in the Historiography of Science 显示文摘Geison Gerald L 1993Osiris 2nd Series1993,8,:1
2Passiflora manicata (Juss.) aqueous leaf extract protects against reactive oxygen species and protein glycation in vitro and ex vivo models显示文摘Maurilio da Silva Morrone Adriano Martimbianco de Assis Ricardo Fagundes da Rocha Juciano Gasparotto Andressa Córneo Gazola Geison Modesti Costa Silvana Maria Zucolotto Leonardo H. Castellanos Freddy A. Ramos Eloir Paulo Schenkel Flávio Henrique Reginatto 2013Food and Chemical Toxicology2013,,:1
3A practical approach with drones,smartphones,and tracking tags for potential real-time animal tracking显示文摘Drones are increasingly used for fauna monitoring and wildlife tracking;however,their application for wildlife tracking is restricted by developing such systems.Here we explore the potential of drones for wildlife tracking using an off-the-shelf system that is easy to use by non-specialists consisting of a multirotor drone,smartphones,and commercial tracking devices via Bluetooth and Ultra-Wide Band(UWB).We present the system configuration,explore the operational parameters that can affect detection capabilities,and test the effectiveness of the system for locating targets by simulating target animals in savanna and forest environments.The self-contained tracking system was built without hardware or software customization.In 40 tracking flights carried out in the Brazilian Cerrado,we obtained a detection rate of 90%in savanna and 40%in forest areas.Tests for targets in movement(N=20),the detection rates were 90%in the savanna and 30%in the forest areas.The spatial accuracy obtained by the system was 14.61 m,being significantly more accurate in savanna(x=10.53)than in forest areas(x=13.06).This approach to wildlife tracking facilitates the use of drones by non-specialists at an affordable cost for conservation projects with limited resources.The reduced size of the tags,the long battery life,and the iower cost compared to GPS-tags open up a range of opportunities for animal tracking.Geison P Mesquita Margarita Mulero-Pazmany Serge A Wich Jose Domingo Rodriguez-Teijeiro 2023Current Zoology2023,69,2:0
4Measuring disturbance at swift breeding colonies due to the visual aspects of a drone:a quasi-experiment study显示文摘There is a growing body of research indicating that drones can disturb animals.However,it is usu-ally unclear whether the disturbance is due to visual or auditory cues.Here,we examined the effect of drone flights on the behavior of great dusky swifts Cypseloides senex and white collared swifts Streptoprocne zonaris in 2 breeding sites where drone noise was obscured by environmental noise from waterfalls and any disturbance must be largely visual.We performed 12 experimental flights with a multirotor drone at different vertical,horizontal,and diagonal distances from the colonies.From all flights,17%caused<1%of birds to temporarily a bandon the breeding site,50%caused half to abandon,and 33%caused more than half to abandon.We found that the diagonal distance explained 98.9%of the variability of the disturbance percentage and while at distances>50 m the disturbance percentage does not exceed 20%,at<40 m the disturbance percentage increase to>60%.We recommend that flights with a multirotor drone during the breeding period should be con-ducted at a distance of>50 m and that recreational flights should be discouraged or conducted at larger distances(e.g.100 m)in nesting birds areas such as waterfalls,canyons,and caves.Geison P.MESQUITA JoséD.RODRÍGUEZ-TEIJEIRO Serge A.WICH Margarita MULERO-PÁZMÁNY 2021Current Zoology2021,67,2:0
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