Results 61 to 70 of about 4,342 (214)

The Largest Narwhal Tusk [PDF]

open access: yesScientific American, 1904
n ...
openaire   +2 more sources

Medieval Naturalia

open access: yesMedievalista, 2021
The nascent global age at the close of the Middle Ages introduced exotic objects from distant lands into Western Europe. Exotica from the natural world – naturalia – were frequently fashioned into ecclesiastical and seigniorial artifacts and housed in ...
Chantal Stein
doaj   +1 more source

Top‐Down and Bottom‐Up Processes Jointly Explain Mesopredator Movement and Foraging Ecology

open access: yesEcology Letters, Volume 29, Issue 3, March 2026.
This study integrates top‐down (polar bear habitat selection) and bottom‐up (fish distribution) processes to test how mesopredators (ringed seals) balance risk–reward tradeoffs in habitat selection. Ringed seals reduced their space use and foraging time in response to predation risk, yet accepted higher risk when prey diversity was elevated ...
Katie R. N. Florko   +7 more
wiley   +1 more source

The Evolution of American Microtargeting: An Examination of Trends in Political Messaging [PDF]

open access: yes, 2014
The usage of targeted messaging by political campaigns has seen a drastic evolution over the past half-century. Through advancement in campaign technology, and an increasingly large amount of personal information up for sale, campaigns have continually ...
Bunting, Luke
core   +2 more sources

Climate Change, Local Harvests and Marine Contamination: A Perspective on Cetacean Populations and Coastal Whaling Communities

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT Cetaceans are indicators of ocean health, influence marine ecosystem dynamics and hold socio‐economic importance for coastal whaling communities. Yet whale–whaler relationships remain poorly understood and are increasingly compromised under the triple planetary crisis of climate change, biodiversity loss and pollution. Here, we briefly outline
Melissa A. McKinney, Jeremy J. Kiszka
wiley   +1 more source

Seismo-Stratigraphy and Sedimentology of Holocene Sediments off Grande Rivière de la Baleine, Southeastern Hudson Bay, Québec [PDF]

open access: yes, 1993
The regional distribution of Holocene sediments of eastern Hudson Bay off the Grande Rivière de la Baleine mouth was mapped using a grid of reflection seismic lines (approximately 300 km long and covering an area of approximately 800 km2) and data from 7
d’Anglejan, Bruno   +2 more
core   +1 more source

Discovery of sexual dimorphism of the laryngeal sac in the common minke whale Balaenoptera acutorostrata

open access: yesThe Anatomical Record, Volume 309, Issue 2, Page 397-416, February 2026.
Abstract Mysticetes, or baleen whales, have an air sac on the ventral surface of the larynx known as the “laryngeal sac.” The primary hypothesis regarding this structure's function is that it is involved in sound production. However, several other functions have been proposed, including air recycling, air storage, and even buoyancy control.
Gen Nakamura   +7 more
wiley   +1 more source

A combined linkage and exome sequencing analysis for electrocardiogram parameters in the Erasmus Rucphen family study [PDF]

open access: yes, 2016
Electrocardiogram (ECG) measurements play a key role in the diagnosis and prediction of cardiac arrhythmias and sudden cardiac death. ECG parameters, such as the PR, QRS, and QT intervals, are known to be heritable and genome-wide association studies of ...
Amin, N. (Najaf)   +15 more
core   +1 more source

On the Damage Tolerance of Diffusion Bonded Titanium–Aluminum Phase Biomimetic Composites

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT The biomimetic design principles of natural structures involve the strategic integration of stiff and compliant phases to synergistically enhance strength and toughness. Its evolutionary refined natural armor, characterized by a specialized microarchitecture, enables superior damage tolerance.
Shuai Tong   +10 more
wiley   +1 more source

Use of tusks by narwhals, Monodon monoceros, in foraging, exploratory, and play behavior

open access: yesFrontiers in Marine Science
Despite the universal fascination with the tusk of the narwhal, the function of this long, spiraled tooth is still debated, primarily because few people have observed how narwhals (Monodon monoceros) use their tusks in the wild.
Greg O’Corry-Crowe   +8 more
doaj   +1 more source

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