Results 51 to 60 of about 112,775 (298)

What is Extinction? Ecopolitics of the End [version 1; peer review: 2 approved, 1 approved with reservations]

open access: yesRoutledge Open Research
In recent years, extinction has become something of a buzzword used to portray the state of consciousness of the epoch. Its definition as a concept, however, heavily oscillates between naturalistic, speculative, ethical and critical connotations. The aim
Gregorio Tenti
doaj   +1 more source

The extinction probability in systems randomly varying in time

open access: yesNuclear Engineering and Technology, 2017
The extinction probability of a branching process (a neutron chain in a multiplying medium) is calculated for a system randomly varying in time. The evolution of the first two moments of such a process was calculated previously by the authors in a system
Imre Pázsit   +2 more
doaj   +1 more source

Extinction risk of threatened and non-threatened mosses: Reproductive and ecological patterns

open access: yesGlobal Ecology and Conservation, 2022
For the conservation of species, it is crucial to predict extinction risk by discerning drivers such as biological traits and habitat specificity within the current context of environmental change.
Juan Antonio Calleja   +5 more
doaj   +1 more source

Retroactive interference: Counterconditioning and extinction with and without biologically significant outcomes.

open access: yesJournal of Experimental Psychology: Animal Learning and Cognition, 2020
Following cue-outcome (X-O) pairings, 2 procedures that reduce conditioned responses to X are extinction, in which X is presented by itself, and counterconditioning, in which X is paired with a different outcome typically of valence opposite that of training.
Jérémie Jozefowiez   +5 more
openaire   +4 more sources

Biological diversity and probability of local extinction of ecosystems [PDF]

open access: yesFunctional Ecology, 2000
Abstract1. With a mathematical model, we demonstrate that two principle components of biological diversity have antagonistic effects on the probability of ecosystem functioning (i.e. on ecosystem reliability, sensuNaeem 1998). Increasing the number of functionally analogous species in the system is shown to enhance reliability, while increasing the ...
Nijs, I., Impens, I.
openaire   +2 more sources

Chiral Phase Change Nanomaterials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow   +11 more
wiley   +1 more source

Epiphyte metapopulation dynamics are explained by species traits, connectivity, and patch dynamics [PDF]

open access: yes, 2012
The colonization-extinction dynamics of many species are affected by the dynamics of their patches. For increasing our understanding of the metapopulation dynamics of sessile species confined to dynamic patches, we fitted a Bayesian incidence function ...
Ranius, Thomas   +8 more
core   +1 more source

Heavy metal toxicity and its role as a major driver of past biodiversity crises

open access: yesCommunications Earth & Environment
Whether today’s heavy metal pollution constitutes an unprecedented threat to biodiversity remains unresolved. Although evidence of metal enrichment exists for several deep-time biotic crises, direct causal links to extinction are lacking.
Francesca Galasso   +2 more
doaj   +1 more source

Stabilizing spatially-structured populations through adaptive Limiter Control. [PDF]

open access: yesPLoS ONE, 2014
Stabilizing the dynamics of complex, non-linear systems is a major concern across several scientific disciplines including ecology and conservation biology.
Pratha Sah, Sutirth Dey
doaj   +1 more source

A Molecular Shielding Strategy to Develop Low Protein Binding, Renal Clearable Pan‐Cancer Near‐Infrared Probes

open access: yesAdvanced Functional Materials, EarlyView.
A molecular shielding strategy to convert “protein‐sticky” and “non‐tumor specific” clinical ICG dye, into a “low protein binding” and “tumor‐targeting” dye with prolonged blood circulation and renal clearance is described. These shielded ICGs demonstrate strong tumor accumulation and optimal tissue clearance, resulting in high tumor‐to‐background ...
Li Xiang   +9 more
wiley   +1 more source

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