Results 231 to 240 of about 11,061 (283)

Temporal, species‐specific variation in activity patterns of bats (Chiroptera) along a boreal river basin in Västerbotten, Sweden

open access: yesWildlife Biology, EarlyView.
Seasonal variation in photoperiods, energetic demands, and reproductive constraints are expected to strongly influence bat activity at high latitudes, yet empirical evidence from boreal systems is limited. We used passive acoustic monitoring to examine spatial, temporal, and feeding activity patterns of bats along a boreal river basin in Sweden (64°N ...
Morgan Hughes, Monika Laux
wiley   +1 more source

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

open access: yesWildlife 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   +1 more
wiley   +1 more source

A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244Cm$$ {}^{244}\mathrm{Cm} $$ sources, and come with severe concerns on radiation safety and ...
Leandro Silveri   +14 more
wiley   +1 more source

A complex structure of escaping helium spanning more than half the orbit of the ultra-hot Jupiter WASP-121 b. [PDF]

open access: yesNat Commun
Allart R   +21 more
europepmc   +1 more source

Uncovering hidden bias in neutron diffraction residual strain measurements

open access: yesJournal of Applied Crystallography, EarlyView.
This work demonstrates that diffraction‐based residual strain calculations and uncertainty estimates depend on how grain populations are sub‐sampled, with important implications for interpreting residual stresses in heterogeneous materials with fine‐scale microstructure and strain gradients.When calculating residual strain via neutron or X‐ray ...
Cole Franz   +4 more
wiley   +1 more source

A tidal disruption event from an intermediate-mass black hole revealed by comprehensive multi-wavelength observations. [PDF]

open access: yesNat Commun
Wang J   +14 more
europepmc   +1 more source

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

open access: yesJournal 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   +3 more
wiley   +1 more source

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