Results 31 to 40 of about 28,057 (249)

A Multi-Sensor Unoccupied Aerial System Improves Characterization of Vegetation Composition and Canopy Properties in the Arctic Tundra

Remote Sensing, 2020
Changes in vegetation distribution, structure, and function can modify the canopy properties of terrestrial ecosystems, with potential consequences for regional and global climate feedbacks.
Dedi Yang, Ran Meng, Bailey D. Morrison, Andrew McMahon, Wouter Hantson, Daniel J. Hayes, Amy L. Breen, Verity G. Salmon, Shawn P. Serbin   +8 more
doaj   +1 more source

Multidirectional chromosome painting substantiates the occurrence of extensive genomic reshuffling within Accipitriformes. [PDF]

, 2015
BACKGROUND: Previous cross-species painting studies with probes from chicken (Gallus gallus) chromosomes 1-10 and a paint pool of nineteen microchromosomes have revealed that the drastic karyotypic reorganization in Accipitridae is due to extensive ...
Beiyuan Fu, Bertrand Bed’Hom, Fengtang Yang, Gauthier Dobigny, Jinghuan Wang, Kai He, Malcolm A. Ferguson-Smith, Patricia C. M. O’Brien, Vitaly Volobouev, Weiting Su, Wenhui Nie   +10 more
core   +4 more sources

Habitat use and reproductive success of ospreys in central interior California

California Fish and Wildlife Journal, 2022
The osprey (Pandion halieatus) declined globally in the mid-late 20th century due primarily to pesticide contamination that reduced reproduction. The species has recovered through much of its range, and its range in California has increased.
Daniel Airola, James A. Estep,
doaj   +1 more source

Expectation-Maximization Binary Clustering for Behavioural Annotation [PDF]

, 2015
We present a variant of the well sounded Expectation-Maximization Clustering algorithm that is constrained to generate partitions of the input space into high and low values.
Bartumeus, Frederic, Garriga, Joan, Oltra, Aitana, Palmer, John R.   +3 more
core   +5 more sources

Latency, microenvironment, and the priming of a precancerous senescent cell for malignant transformation

Advances in Cancer Biology - Metastasis
The emergence of cancer is a multistep process, with passage through a so-called precancerous stage as part of the development. Biopsies of suspicious lesions often reveal cells that are altered or abnormal, and those anomalous cells, while often still ...
April Kirkendoll
doaj   +1 more source

HWTS 50 Tool Steel Tailored for Laser Powder Bed Fusion: Sliding Wear of Bare Surfaces and Nitriding Response in Comparison with 18Ni300 and AISI H13

steel research international, EarlyView.
This work investigates the wear resistance and nitriding behavior of PBF‐LB/M‐processed Osprey HWTS 50, a lean hot work tool steel. Three heat treatment conditions are compared to conventional wrought H13, H11, and PBF‐LB/M 18Ni300. The study highlights HWTS 50's enhanced nitrogen diffusion, deeper nitriding hardness depth, and comparable or improved ...
Jonathan Hann, Giorgia Lupi, Sylvain Dossin, Riccardo Casati, Mandanà Moshiri, Arne Röttger, Faraz Deirmina   +6 more
wiley   +1 more source

Monitoring active osprey nests with drones is more time efficient and less disturbing than conventional methods

Wildlife Biology, EarlyView.
Drones are used to monitor bird nesting sites at less accessible locations, such as on cliffs, human infrastructure, or within the tree canopy. While there are a growing number of studies documenting avian behavioral responses to various drones, there is a continued need to monitor taxa‐specific responses to different drone models. We explored both the
Natasha K. Murphy, Jared A. Elmore, Melanie R. Boudreau, Brian S. Dorr, Scott A. Rush   +4 more
wiley   +1 more source

Geometric calibration of Colour and Stereo Surface Imaging System of ESA's Trace Gas Orbiter [PDF]

, 2017
There are many geometric calibration methods for "standard" cameras. These methods, however, cannot be used for the calibration of telescopes with large focal lengths and complex off-axis optics.
Cremonese, Gabriele, Fleuret, Francois, Ivanov, Anton, Pommerol, Antoine, Roloff, Victoria, Thomas, Nicolas, Tulyakov, Stepan, Weigel, Thomas   +7 more
core   +2 more sources

Habitat imprinting in breeding territory selection of a long‐lived bird of prey

Journal of Animal Ecology, EarlyView.
A unique long‐term dataset has allowed this study of an important habitat selection mechanism, habitat imprinting, in a species which is typically extremely challenging to study. It gives us better understanding of the role of early experience in selection of breeding sites in long‐lived species with high breeding site fidelity.
Ida Penttinen, Carina Nebel, Toni Laaksonen   +2 more
wiley   +1 more source

Multimodel climate and variability of the stratosphere [PDF]

, 2011
The stratospheric climate and variability from simulations of sixteen chemistryclimate models is evaluated. On average the polar night jet is well reproduced though its variability is less well reproduced with a large spread between models.
Akiyoshi, H., Austin, J., Baumgaertner, A., Bekki, Slimane, Braesicke, P., Bruhl, C., Butchart, N., Charlton-Perez, Andrew J., Chipperfield, M., Cionni, I., Dameris, M., Dhomse, S., Eyring, V., Garcia, R., Garny, H., Hardiman, S. C., Haynes, P. H., Jockel, P., Kruger, K., Kushner, P. J., Lamarque, J. F., Marchand, Marion, Michou, Martine, Morgenstern, Olaf, Nakamura, T., Newman, P. A., Osprey, S. M., Pawson, S., Perlwitz, J., Plummer, D., Pyle, J., Rozanov, E., Scinocca, J., Shepherd, T. G., Shibata, K., Sigmond, M., Smale, Dan, Teyssèdre, H., Tian, W., Wang, L., Waugh, D., Yamashita, Y.   +41 more
core   +3 more sources