Results 1 to 10 of about 50,245 (161)

Variations of the Ratio of Total-To-selective Extinction in the Galaxy [PDF]

open access: yesOpen Astronomy, 2003
The results of the study of variations of total-to-selective extinction RV near the Galactic plane (-12° ≤ b ≤+12°) are presented. It is shown that variations of RV range from 1.9 to 3.4 and it is not possible to determine its typical value for the ...
Sūdžius J., Raudeliūnas S.
doaj   +4 more sources

Promotion of cooperation by selective group extinction

open access: yesNew Journal of Physics, 2016
Multilevel selection is an important organizing principle that crucially underlies evolutionary processes from the emergence of cells to eusociality and the economics of nations.
Marvin A Böttcher, Jan Nagler
doaj   +6 more sources

Selective extinction against redundant species buffers functional diversity [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2020
Catalina Pimiento   +2 more
exaly   +2 more sources

Extinction and morphospace occupation: A critical review

open access: yesCambridge Prisms: Extinction, 2023
Processes of extinction, especially selectivity, can be studied using the distribution of species in morphospace. Random extinction reduces the number of species but has little effect on the range of morphologies or ecological roles in a fauna or flora ...
P. David Polly
doaj   +1 more source

Central amygdala micro-circuits mediate fear extinction

open access: yesNature Communications, 2021
The central amygdala inhibitory microcircuits mediate fear extinction by reversible, stimulus- and context-specific changes in neuronal responses. These alterations are absent when extinction is deficient and selective silencing of PKCδ neurons impairs ...
Nigel Whittle   +12 more
doaj   +1 more source

A stochastic model of antibiotic misuse, economy, and drug resistance: relating mutant extinction probability to socioeconomic and epidemiological factors

open access: yesMathematical and Computer Modelling of Dynamical Systems, 2023
Controlling antibiotic drug resistance requires understanding extinction and emergence mechanisms of emerging bacteria. Selective pressure from prolonged antibiotic misuse may cause high-level antimicrobial resistance.
Bhawna Malik, Samit Bhattacharyya
doaj   +1 more source

Community stability and selective extinction during the Permian-Triassic mass extinction [PDF]

open access: yesScience, 2015
No precedent Human activities are creating a mass extinction event. The intensity of this event is unprecedented during human times, but there have been several comparable events during Earth's history. Roopnarine and Angielczyk examined one of the largest, the Permian-Triassic Extinction (see the Perspective by Marshall).
Peter D, Roopnarine   +1 more
openaire   +3 more sources

Archosauromorph extinction selectivity during the Triassic–Jurassic mass extinction [PDF]

open access: yesPalaeontology, 2018
AbstractMany traits have been linked to extinction risk among modern vertebrates, including mode of life and body size. However, previous work has indicated there is little evidence that body size, or any other trait, was selective during past mass extinctions.
Bethany J. Allen   +3 more
openaire   +6 more sources

Are in vivo selections on the path to extinction? [PDF]

open access: yesMicrobial Biotechnology, 2017
Droplet microfluidics will become a disruptive technology in the field of library screening and replace biological selections if the central dogma of biology and other processes are successfully implemented within microdroplets.
Berenguer, José   +2 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy