Results 121 to 130 of about 336,559 (298)

The infant Milky Way [PDF]

open access: yes, 2012
We investigate the physical properties of the progenitors of today living Milky Way-like galaxies that are visible as Damped Lya Absorption systems and Lya Emitters at higher redshifts (z ~ 2.3,5.7).
Ferrara, Andrea, Salvadori, Stefania
core   +3 more sources

Reading hominin life history in fossil bones and teeth: methods to test hypotheses regarding its evolution

open access: yesBiological Reviews, EarlyView.
ABSTRACT Human life history is derived compared to that of our closest living relatives, the great apes. It has been suggested that these derived traits are causally related to aspects of our ecology, social behaviour and cognitive abilities. However, resolving this requires that we know the evolutionary trajectory of our distinctive pattern of growth,
Paola Cerrito   +2 more
wiley   +1 more source

Handmade films and artist-run labs. The chemical sites of film’s counterculture [PDF]

open access: yes, 2018
This article addresses handmade films and especially artist-run labs as sites of hands-on film culture that reactivate moments and materials from media history.
Catanese, Rossella, Parikka, Jussi
core  

Subterranean environments contribute to three‐quarters of classified ecosystem services

open access: yesBiological Reviews, EarlyView.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola   +30 more
wiley   +1 more source

The Intensity of Combat in the Lithuanian War of Independence in 1919 and 1920

open access: yesActa Historica Universitatis Klaipedensis
The war which covered the future territory of Lithuania in 1919 and 1920 after the end of the First World War has already been described several times by historians.
Vytautas Jokubauskas   +1 more
doaj   +1 more source

‘Archive archaeology’ : dusting off records and digging up data on past archaeologies in Sicily (1861-1915) [PDF]

open access: yes, 2012
Can archives be used to reveal the history of past archaeological research? Archaeology is not just digging! Archives are not just dusty accumulations of paper generated by bureaucratic procedures…Many in fact hold remarkable records about the ...
Crisa, Antonino
core   +1 more source

The extension of the taxon cycle model to island plants: insights from the Canarian vascular flora

open access: yesBiological Reviews, EarlyView.
ABSTRACT Taxon cycle models describe eco‐evolutionary patterns of lineage colonization, diversification, and decline across archipelagos, inferring an important role for competition amongst ecologically similar taxa in driving concurrent niche changes.
José María Fernández‐Palacios   +2 more
wiley   +1 more source

AI + Drawing Enhances the Efficiency of Human Anatomy Education

open access: yesClinical Anatomy, EarlyView.
ABSTRACT Human anatomy is a fundamental core course in medical education, and its teaching effectiveness directly influences students' understanding and application of medical knowledge. However, traditional anatomy instruction often faces challenges such as limited teaching resources and the high cognitive difficulty students experience.
Fangfang Zhou   +3 more
wiley   +1 more source

New Evidence of the Relationship Between Oxidative Hydrolysis of CuCl “Bronze Disease” and Relative Humidity (RH) for Management of Archaeological Copper Alloys

open access: yesHeritage
A key goal when managing copper alloy heritage is preventing “bronze disease,” which damages surface detail and may disintegrate objects by oxidation and hydrolysis of nantokite (CuCl), forming voluminous copper trihydroxychlorides (Cu2(OH)3Cl).
Johanna Thunberg   +2 more
doaj   +1 more source

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa   +4 more
wiley   +1 more source

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