Results 81 to 90 of about 12,862,021 (286)

The free time usage by teenagers of lower class populations / Uso do tempo livre por adolescentes de classe popular

open access: yesPsicologia: Reflexão e Crítica, 2007
The article presents the results of a research that analyzes free time usage by lower class teenagers. The analysis on how teenagers manage their free time can supply data for the development of psychoeducative intervention and the promotion of this ...
Jorge Castellá Sarriera   +3 more
doaj  

UTILIZACIÓN DEL TIEMPO LIBRE DE ESTUDIANTES DEL ÁREA DE SALUD DE LA INSTITUCIÓN EDUCACIONAL SANTO TOMAS, TALCA

open access: yesCiencia y Enfermería
Estudio de tipo descriptivo transversal y correlacional en que se analizan los hábitos de utilización del tiempo libre de los estudiantes de la Institución de Educación Superior Santo Tomás en Talca, de las carreras del área de la salud: Enfermería ...
MARTA LEMP PAREDES, VERONICA BEHN THEUNE
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Optimality conditions applied to free-time multi-burn optimal orbital transfers

open access: yes, 2016
While the Pontryagin Maximum Principle can be used to calculate candidate extremals for optimal orbital transfer problems, these candidates cannot be guaranteed to be at least locally optimal unless sufficient optimality conditions are satisfied. In this
Chen, Zheng
core   +3 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +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

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

We Must Do Better: It's Time to Make Alberta Poverty-Free [PDF]

open access: yes, 2009
This report, authored by Jim Gurnett (in partnership with the ESPC, Public Interest Alberta, and the Bissell Centre), is a follow up to the We Can Do Better report released in 2009. We Must do Better overviews: the results of 5 poverty forums held across
Bill Moore-Kilgannon   +2 more
core  

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

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