Results 31 to 40 of about 2,923,127 (308)

Phylogeny and divergence time estimation of Io moths and relatives (Lepidoptera: Saturniidae: Automeris) [PDF]

open access: yesPeerJ
The saturniid moth genus Automeris includes 145 described species. Their geographic distribution ranges from the eastern half of North America to as far south as Peru. Automeris moths are cryptically colored, with forewings that resemble dead leaves, and
Chelsea Skojec   +4 more
doaj   +2 more sources

The (in)visible barriers to free software: Inequalities in online communities in Spain

open access: yesStudies in Communication Sciences, 2021
Free culture communities support self-learning, peer production, and the distribution of knowledge generated without any restrictions. However, free culture communities are not isolated from the social inequalities of the outside world. Understanding (in)
Dafne Calvo
doaj   +1 more source

A novel and enigmatic two-holed shell aperture in a new species of suspension-feeding worm-snail (Vermetidae) [PDF]

open access: yesPeerJ, 2019
Shell aperture modifications are well known in terrestrial and aquatic gastropods, with apertural lip thickening and tooth development common in species with terminal (determinate) shell growth.
Rüdiger Bieler   +3 more
doaj   +2 more sources

Native America. A History.

open access: yesHistoria Social y de la Educación, 2019
Vladia Ionescu
doaj   +2 more sources

Hydrological and lock operation conditions associated with paddlefish and bigheaded carp dam passage on a large and small scale in the Upper Mississippi River (Pools 14–18) [PDF]

open access: yesPeerJ, 2022
Movement and dispersal of migratory fish species is an important life-history characteristics that can be impeded by navigation dams. Although habitat fragmentation may be detrimental to native fish species, it might act as an effective and economical ...
Dominique D. Turney   +5 more
doaj   +2 more sources

Charles Willson Peale’s The Exhumation of the Mastodon and the Great Chain of Being: The Interaction of Religion, Science, and Art in Early-Federal America [PDF]

open access: yes, 2015
In this paper, I explore Peale’s monumental painting, a work that is many things, a self-portrait and history painting among others. Indeed, in this painting, Peale was responding to science, religion, and their shifting positions within early-nineteenth-
Zygmont, Bryan J.
core   +2 more sources

Assessment of North American arthropod collections: prospects and challenges for addressing biodiversity research [PDF]

open access: yesPeerJ, 2019
Over 300 million arthropod specimens are housed in North American natural history collections. These collections represent a “vast hidden treasure trove” of biodiversity −95% of the specimen label data have yet to be transcribed for research, and less ...
Neil S. Cobb   +5 more
doaj   +2 more sources

A multi-method approach for assessing the distribution of a rare, burrowing North American crayfish species [PDF]

open access: yesPeerJ, 2023
Primary burrowing crayfishes face high extinction risk, but are challenging to study, manage, and conserve due to their difficult-to-sample habitat (i.e., terrestrial burrows) and low population densities.
Kathleen B. Quebedeaux   +3 more
doaj   +2 more sources

“The Most Dangerous Fifth Column in the Americas:” U.S. Journalists and Mexico’s Unión Nacional Sinarquista during World War II

open access: yesReligions, 2023
Between 1937 and 1945, numerous American journalists became gravely concerned about a rapidly growing Mexican Catholic right-wing movement, the Unión Nacional Sinarquista (UNS).
Julia G. Young
doaj   +1 more source

The Cult of Our Lady of Fátima—Modern Catholic Devotion in an Age of Nationalism, Colonialism, and Migration

open access: yesReligions, 2022
In 1917, in the context of extreme anxiety of a rural Catholic population during a period of war, revolutionary upheaval, and anticlerical politics, the apparition of St Mary to three children near the Portuguese village of Fátima stirred up emotions ...
Arpad Von Klimo
doaj   +1 more source

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