Zobrazeno 1 - 10
of 50
pro vyhledávání: '"William R. Evans"'
Publikováno v:
Huitzil, Vol 18, Iss 1 (2017)
En la migración de otoño de 2012, en una estación de monitoreo de llamados nocturnos de aves en vuelo cerca de Minatitlán, Veracruz, México, registramos un tipo de llamado, no documentado previamente. La naturaleza de dos tonos simultáneos de d
Externí odkaz:
https://doaj.org/article/ce0cbe725d03436d9c82c8f2a7738ba9
Autor:
William R. Evans, Mats A. Selen
Publikováno v:
Physical Review Physics Education Research, Vol 13, Iss 2, p 020119 (2017)
Homework in introductory physics represents an important part of a student’s learning experience; therefore, choosing the manner in which homework is presented merits investigation. We performed three rounds of clinical trials comparing the effects
Externí odkaz:
https://doaj.org/article/b2c557f6b9aa452f9bb9b507a386a2b2
Autor:
William R. Evans
Publikováno v:
Ecology and Society, Vol 15, Iss 3, p r1 (2010)
Externí odkaz:
https://doaj.org/article/2f4d643fa9c14627893f2d2bb4565d9b
Autor:
William R. Evans
Publikováno v:
Western Birds. 53:143-152
A large sample of nocturnal flight calls of warblers and sparrows recorded on the outskirts of Nogales, Arizona, from mid-August through October 2015 included an unknown call-type that has not been documented in extensive monitoring of nocturnal flig
Publikováno v:
Academy of Management Proceedings. 2022
Autor:
David D. Allred, William R. Evans
Publikováno v:
Thin Solid Films. 515:847-853
We used spectroscopic ellipsometry to determine the optical constants of seven ThO2 thin-film samples, thickness ranging between 28 and 578 nm, for the spectral range of 1.2 to 6.5 eV. The samples were deposited by biased radio-frequency sputtering a
Publikováno v:
Journal of Field Ornithology. 73:2-8
Recording flight calls of migrating birds with one or more microphones provides information on identity of some birds aloft over each microphone and on the time course of their migration, or at least their calling. Doppler surveillance radar observat
Publikováno v:
Journal of Applied Phycology. 9:55-63
Collections of Lyngbya wollei were taken from Guntersville Reservoir, Alabama, over a period of three years. Healthy filaments were isolated and transferred to agar plates of Z-8 and LM6E media. Unialgal isolates were cultured for the study of growth
Publikováno v:
CIÊNCIAVITAE
University of Helsinki
University of Helsinki
Twelve toxic cyanobacterial bloom samples collected in natural lakes, reservoirs and rivers of Portugal were analysed. Toxicity was evaluated by mouse LD 50 bioassay of the lyophilised samples. The main bloom species present in the samples were Micro
Autor:
Kenneth L. Rinehart, William R. Evans, Byoung Wook Choi, Wayne W. Carmichael, Val R. Beasley, Furong Sun, Michio Namikoshi
Publikováno v:
The Journal of Organic Chemistry. 60:3671-3679