Results 91 to 100 of about 3,693,588 (251)

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

La red del Comercio Justo y sus principales actores

open access: yesInvestigaciones Geográficas, 2010
Este artículo trata de una descripción concisa del fenómeno del comercio justo y su participación en el comercio mundial. Al mismo tiempo, examina el papel de los diferentes actores que participan en la red del comercio justo, desde los productores hasta
Brisa Ceccon Rocha, Eliane Ceccon
doaj  

Principios de la radiodifusión de servicio público en México / Red Nacional de Radiodifusoras y Televisoras Educativas y Culturales.

open access: yes, 2004
Exposición de una serie de principios básicos para la fundamentación de un sistema de radio y televisión de servicio público en México, formulados por la asociación Red Nacional de Radiodifusoras y Televisoras Educativas y Culturales.

core  

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Las pedagogías en la asunción del texto literario en las aulas: experiencias de colectivos de investigación e innovación

open access: yesEnunciación, 2019
Toda investigación tiene como punto de partida el panorama sobre la trayectoria del campo de estudio en la que se inscribe. En la tradición académica se trata de los antecedentes.
Fabio de Jesús Jurado Valencia
doaj  

Australian Red Cross Annual Report

open access: yes, 2001
This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete.
Australian Red Cross Society, National Office
core  

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Australian Red Cross Annual Report

open access: yes, 2000
This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete.
Australian Red Cross Society, National Office
core  

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

open access: yesFEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux   +7 more
wiley   +1 more source

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