Results 201 to 210 of about 735,881 (338)

Fight song: variation in singing behaviour and song structure during natural agonistic interactions in a tropical songbird, Adelaide's Warbler (Setophaga adelaidae)

Ibis, EarlyView.
Birds may use their singing behaviours and song structure as agonistic signals in territorial encounters. We conducted an observational study to test this hypothesis in male Adelaide's Warblers Setophaga adelaidae, a tropical songbird that defends a territory year‐round.
Peter C. Mower, Juleyska Vazquez‐Cardona, Samantha W. Krause, Tyler R. Bonnell, David M. Logue   +4 more
wiley   +1 more source

Analysis, design, and fabrication of a high-gain low-profile metasurface antenna using direct feeding of Sievenpiper's HIS. [PDF]

Sci Rep
Ghaneizadeh A, Peik SF, Schneider M, Joodaki M.   +3 more
europepmc   +1 more source

Nitrogen excretion and oxygen consumption under severe hypoxia in siluriform fishes from the Amazon

Journal of Fish Biology, EarlyView.
Abstract Siluriform fishes collected from the Rio Negro and Rio Solimões proved to be highly resistant to aquatic hypoxia. In all four species analysed in this study, aquatic oxygen consumption significantly decreased from normoxic levels at water PO2 values near 1 kPa. Air‐breathing activity was observed only in Sturisoma sp. (Rio Negro).
Bernd Pelster, Chris M. Wood, Adalberto Luis Val   +2 more
wiley   +1 more source

High-Gain Miniaturized Ultrawideband Antipodal Vivaldi Antenna with Metamaterials. [PDF]

Micromachines (Basel)
Zhang W, Shi L, Zhao C, Yang R.
europepmc   +1 more source

Reproduction and embryonic development of monkeyface prickleback Cebidichthys violaceus in captivity

Journal of Fish Biology, EarlyView.
Abstract Understanding the sequence of embryonic and larval development and the factors necessary to induce reproduction in captivity are critical for developing new species for commercial or conservation aquaculture. In this study, we describe the adult reproductive behaviours and development of eggs, embryos and early larvae of captive monkeyface ...
Kevin D. Hinterman, Matthew R. Hoehn, Luke D. Gardner, Scott L. Hamilton   +3 more
wiley   +1 more source

An ultrawideband monopulse feed with slant polarization for tracking radar systems. [PDF]

Sci Rep
Zarifi D, Farahbakhsh A, Mrozowski M.
europepmc   +1 more source

Racialized Labour in the Colonial Food Regime: The Whitening of England's Farmworkers

Journal of Agrarian Change, EarlyView.
ABSTRACT The crystallization of a colonial food regime in the 1870s centred around Britain is key to historical accounts of agrarian political economy. Yet such accounts have neglected the role of the agrarian proletariat in shaping this regime from below and its basis in racialized hierarchy.
Ben Richardson
wiley   +1 more source

Optimizing microwave-sensitive coatings for enhanced de-icing efficiency: Effects of frequency, antenna design, and surface geometry. [PDF]

Sci Prog
Xiao H, Zhu W, Wang Y, He L.
europepmc   +1 more source

The Uneven Effect of Airbnb on the Housing Market: Evidence Across and Within Italian Cities

Journal of Regional Science, Volume 65, Issue 2, Page 339-377, March 2025.
ABSTRACT We investigate if Airbnb diffusion affects residential property values differently across and within cities leveraging the heterogeneity of five Italian cities in terms of tourist attractiveness, local housing markets, and socioeconomic conditions. We find that Airbnb density growth leads to increases in house prices in all cities. Within‐city,
Raffaele Congiu, Flavio Pino, Laura Rondi   +2 more
wiley   +1 more source

Research on Tbps and Kilometer-Range Transmission of Terahertz Signals. [PDF]

Micromachines (Basel)
Yu J, Chen J.
europepmc   +1 more source