Results 51 to 60 of about 7,144 (220)

Building capacity in vector‐borne plant virus research: The CONNECTED Network

PLANTS, PEOPLE, PLANET, EarlyView.
Plant viruses spread by insects decimate crop yields globally, causing food security challenges in vulnerable areas, including regions of Africa. Interdisciplinary research is needed to protect future crop supplies. CONNECTED, the Community Network for African Vector‐Borne Plant Viruses, increased research capacity in Central, East, West and Southern ...
Nina F. Ockendon‐Powell, Diane L. Hird, Alice Beck, Heather Child, Helen Thomas‐Hughes, Neil Boonham, Gary D. Foster, Bruce Cronin, Andy M. Bailey   +8 more
wiley   +1 more source

Summation Identities Involving Padovan and Perrin Numbers

, 2018
Unlike in the case of Fibonacci and Lucas numbers, there is a paucity of literature dealing with summation identities involving the Padovan and Perrin numbers. In this paper, we derive various summation identities for these numbers, including binomial and double binomial identities. Our results derive from the rich algebraic properties exhibited by the
openaire   +3 more sources

Fear or feast: small mammal activity increases in the presence of carcasses despite increased threat of predation by black‐backed jackals

Wildlife Biology, EarlyView.
Food acquisition is arguably the most important, and among the riskiest behaviours for most mammals. Carcasses are an ephemeral resource for many scavengers, particularly black‐backed jackals Lupulella mesomelas that prey on small mammals. Landscape of fear theory suggests that prey species should reduce their activity in areas of high predator ...
Haemish I. A. S. Melville, W. Maartin Strauss   +1 more
wiley   +1 more source

X‐ray fluorescence microscopy exposure estimates using a single excitation energy

Journal of Synchrotron Radiation, EarlyView.
We present calculations on the number of illuminating photons per pixel required for elemental detection using X‐ray fluorescence, even with far‐from‐threshold excitation.Scanning fluorescence X‐ray microscopy is widely used for quantitative mapping of elemental concentrations, including in studies of essential but low‐concentration metals in cells ...
Benjamin Roter, Andrew M. Crawford, Thomas V. O'Halloran, Chris Jacobsen   +3 more
wiley   +1 more source

Beyond first clutches: Second broods reshape selection on breeding timing in forest and urban great tits

Journal of Animal Ecology, EarlyView.
Most studies of selection on breeding timing consider only first clutches. Using a 13‐year dataset of urban and forest great tits, we show that including second broods reshapes estimates of natural selection, revealing that early breeding is favoured through increased probability of multiple brooding and higher annual reproductive output.
Jérémy Defrance, Marcel Lambrechts, Amélie Fargevieille, Samuel Perret, Arnaud Grégoire, Anne Charmantier   +5 more
wiley   +1 more source

Sensory Biology of the Franciscana (Pontoporia blainvillei, Pontoporiidae, Cetartiodactyla): Ontogenetic Modifications of Vibrissae and Vibrissal Crypts

Integrative Zoology, EarlyView.
The transition of cetaceans from a terrestrial to an aquatic environment involved a crucial sensory adaptation to environments with limited visibility. Vibrissae, important mechanoreceptors, undergo an ontogenetic transformation in odontocetes. This research describes the histomorphology of vibrissae and crypts at different developmental stages ...
Cecilia Mariana Krmpotic, Cleopatra Mara Loza, Alejo Carlos Scarano, Pedro Fernando Andrés‐Laube, Francisco Acuña, Juan Pablo Loureiro, Carolina Natalia Zanuzzi, Nicolás Nahuel Castro, María Teresa Pombo, Lorenzo von Fersen, Claudio Gustavo Barbeito   +10 more
wiley   +1 more source

Jean Perrin and the Philosophers’ Stories: The Role of Multiple Determination in Determining Avogadro’s Number [PDF]

HOPOS: The Journal of the International Society for the History of Philosophy of Science, 2020
The French physicist Jean Baptiste Perrin is widely credited with providing the conclusive argument for atomism.
openaire   +1 more source

Circulant matrices with Cordonnier, Perrin and Van der Laan numbers

, 2013
Bu çalışmada, öncelikle Van Der Laan sayı dizilerinin bazı toplamsal özellikleri incelenmiştir. Daha sonra Cordonnier, Perrin ve Van Der Laan sayıları kullanılarak circülant matrisler tanımlanmıştır.
Coşkun, Arzu
core  

Urbanization and Vector Species Shape Avian Malaria Prevalence in Mosquitoes

Integrative Zoology, EarlyView.
Avian malaria prevalence was assessed in two mosquito species across urban and peri‐urban habitats. No infections were detected in either species in urban areas, while a 2.53% prevalence was found in the native Culex pipiens from peri‐urban sites, highlighting the influence of urbanization on parasite transmission dynamics.
Paula Parra, Jesús Veiga, Marta Garrigós, Guillermo Panisse, Mario Garrido, Josué Martínez‐de la Puente   +5 more
wiley   +1 more source

The matrix representations of Padovan and Perrin numbers

, 2015
Son yıllarda bilim dünyasının ilgisini çeken, sanat ve mimari gibi birçok alanda karşımıza çıkan Fibonacci, Lucas, Pell, Padovan ve Perrin sayı dizileri ile ilgili çok çalışmalar vardır.
Yılmaz, Nazmiye
core