Results 111 to 120 of about 4,494,368 (337)

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

AITP 2019 - ANO INTERNACIONAL DA TABELA PERIÓDICA DOS ELEMENTOS QUÍMICOS

open access: yesQuímica Nova
United Nations elected 2019 a year devoted to the Periodic Table of the Elements, in deference to the original contribution by Dmitri Ivanovich Mendeleev in 1869.
Henrique E. Toma
doaj   +1 more source

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

O ano internacional da tabela periódica e o ensino de química: das cartas ao digital

open access: yesQuímica Nova
Proclaimed by UNESCO the International Year of the Periodic Table of Chemical Elements in 2019 (IYPT 2019) will commemorate a remarkable series of important milestones in the history of the periodic table of chemical elements.
Bruno S. Leite
doaj   +1 more source

Periodic Table Club [PDF]

open access: yes, 2020
This club is dedicated to teaching the generation of future scientists the periodic table. This is designed to be a unique take on a STEM club that uses the periodic table as a backbone for a solid foundation in ...
Gill, Makayla, Jensen, Kailynn
core  

An overview of recent developments in computational methods for periodic systems [PDF]

open access: yes, 2007
: At the First IFAC Workshop on Periodic Systems (Como, Italy, 2001), a state of the art survey of computational methods for periodic systems has been presented (Varga and Van Dooren, 2001).
Andras Varga, Varga, Andreas
core   +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

Design of Fault Detection Filters for Periodic Systems [PDF]

open access: yes, 2004
We propose a numerically reliable computational approach to design fault detection filters for periodic systems. This approach is based on a new numerically stable algorithm to compute least order annihilators without explicitly building time-invariant ...
A. Varga, Varga, Andras
core   +1 more source

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

The Development of the Periodic Table and its Consequences

open access: yesSubstantia, 2019
Chemistry is fortunate among the sciences in having an icon that is instantly recognisable around the world: the periodic table. The United Nations has deemed 2019 to be the International Year of the Periodic Table, in commemoration of the 150th ...
John Emsley
doaj   +1 more source

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