Results 101 to 110 of about 398,452 (282)

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Un marché de l’art précolombien en plein questionnement

open access: yesLes Nouvelles de l’Archéologie, 2016
De récentes actualités sur le marché de l’art précolombien en France ont mis en évidence les nombreux problèmes liés au commerce de l’art précolombien : pillages de sites, trafics illicites, inflation des prix, fabrication de copies de pièces… Les ...
André Delpuech
doaj   +1 more source

NASA thermionic-conversion program [PDF]

open access: yes
Current out-of-core emphases allow converter material and design freedoms previously prohibited by in-core nucleonic and geometric restrictions. As a result, potential improvements indicate possibilities for severalfold increases in efficiencies. The new
Lundholm, J. G., Morris, J. F.
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

Larval settlement and spat recovery rates of the oyster Crassostrea brasiliana (Lamarck, 1819) using different systems to induce metamorphosis Taxas de assentamento larval e recuperação de sementes da ostra Crassostrea brasiliana (Lamarck, 1819) com uso de diferentes sistemas de indução à metamorfose

open access: yesBrazilian Journal of Biology, 2011
This study aimed at the assessment, in the laboratory, of the larval settlement and spat recovery rates of oysters of the species Crassostrea brasiliana using plastic collectors, epinephrine (C9H13NO3 C4H6O6) and shell powder in settlement tanks ...
RC Silveira   +4 more
doaj   +1 more source

MSFC hot air collectors. Phase 1: Test report [PDF]

open access: yes
A development test program of 3 hot air flat plate solar collectors is described in detail. The pressure drop versus flow rate performance characteristics for these collectors, mounted in series, was determined under 14 different test conditions each of ...
Losey, R.
core   +1 more source

Collecting coins and connecting collectors : government and social networks in the Kingdom of the Two Sicilies (1816-1860) [PDF]

open access: yes, 2017
Recent archival research has revealed new data on the history of collecting and archaeology in northern Sicily during the nineteenth century, when Sicily was ruled by the Bourbons and annexed to the Kingdom of the Two Sicilies.
Crisa, Antonino
core  

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Debt collection guideline for collectors & creditors [PDF]

open access: yes
This guide assists creditors, collectors, collectors and debtors to understand their rights and obligations, and ensure that debt collection activity is under taken in a way that is consistent with consumer protection laws.

core  

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

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