Results 81 to 90 of about 74,723 (348)
Mass Spectrometry Reviews, EarlyView.ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt +4 more
wiley +1 more source
Frontiers in Microbiology, 2019 Information on the dissemination of antibiotic resistance mechanisms in the environment as well as wild life is needed in North America. A constructed wetland (where ∼15,000 American crows roost) was sampled on the University of Washington Bothell Campus
Keya Sen +8 more
doaj +1 more source
An Investigation of Seed Treatments for the Control of Crow Damage to Newly-Sown Wheat [PDF]
, 2007 End of project reportSeed treatments for the control of crow damage to newly-sown winter and spring wheat were evaluated in field trials from 2004 to 2007. Treatments included six fungicides, three insecticides, a product marketed as a bird repellent and
Connery, J., Kennedy, T.F.
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International Journal of Osteoarchaeology, EarlyView.ABSTRACT The golden eagle (Aquila chrysaetos) nests in rock cavities where it accumulates prey bone remains during the breeding season. Because nests can be reoccupied from year to year, these faunal elements can form remarkable bone accumulations and, in the sub‐fossil record, be mixed with assemblages derived from human or other predator activities ...
Juliette Ripond +5 more
wiley +1 more source
Volitional control of vocalizations in corvid songbirds.
PLoS Biology, 2019 Songbirds are renowned for their acoustically elaborate songs. However, it is unclear whether songbirds can cognitively control their vocal output. Here, we show that crows, songbirds of the corvid family, can be trained to exert control over their ...
Katharina F Brecht +3 more
doaj +1 more source
Synthesis of high-order bandpass filters based on coupled-resonator optical waveguides (CROWs) [PDF]
, 2011 We present a filter design formalism for the synthesis of coupled-resonator optical waveguide (CROW) filters. This formalism leads to expressions and a methodology for deriving the coupling coefficients of CROWs for the desired filter responses and is ...
Liu, Hsi-Chun, Yariv, Amnon
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Oikos, EarlyView.Functional diversity (FD) is an essential community property connecting biodiversity, ecosystem functioning, and conservation objectives. In agricultural landscapes, avian communities, which play key functional roles, are facing large‐scale biodiversity erosion, largely due to land‐use changes.
Pietro Tirozzi +3 more
wiley +1 more source
A Sceptical Look at “A Skeptical Look at Karl Popper” [PDF]
, 2016 It is an irony to attack a more sceptical epistemology than one's own in the name of scepticism and defend, instead, an epistemology that is positively illogical. And yet that is what Martin Gardner has done in his “A Skeptical Look at Karl Popper.
Lester, J. C.
core
On the asymmetry of the relative entropy [PDF]
, 2013 The quantum relative entropy $S(\rho||\sigma)$ is a widely used dissimilarity measure between quantum states, but it has the peculiarity of being asymmetric in its arguments.
Audenaert, Koenraad M. R.
core +1 more source