Results 71 to 80 of about 4,323,384 (305)

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

Electrostatic stability and encapsidation of charged nano-droplets

open access: yes, 2013
We investigate electrostatic stability of charged droplets, modeled as permeable, charged spheres, and their encapsidation in thin, arbitrarily charged nano-shells, immersed in a neutralizing asymmetric electrolyte background.
Božič, Anže Lošdorfer   +3 more
core   +1 more source

Analysis of healthy sitting behavior: Interface pressure distribution and subcutaneous tissue oxygenation [PDF]

open access: yes, 2009
Pressure ulcers are a large problem in individuals who use a wheelchair for their mobility and have limited trunk stability and motor function. Because no relation between interface pressure and pressure ulcer development has been established and no ...
Geffen, Paul van   +5 more
core   +2 more sources

Multiple ETS family transcription factors bind mutant p53 via distinct interaction regions

open access: yesFEBS Letters, EarlyView.
Mutant p53 gain‐of‐function is thought to be mediated by interaction with other transcription factors. We identify multiple ETS transcription factors that can bind mutant p53 and found that this interaction can be promoted by a PXXPP motif. ETS proteins that strongly bound mutant p53 were upregulated in ovarian cancer compared to ETS proteins that ...
Stephanie A. Metcalf   +6 more
wiley   +1 more source

Simulation of a wire-cylinder-plate positive corona discharge in nitrogen gas at atmospheric pressure

open access: yes, 2012
In this work we are going to perform a simulation of a wire-cylinder-plate positive corona discharge in nitrogen gas, and compare our results with already published experimental results in air for the same structure.
Martins, Alexandre A.
core   +1 more source

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

Playing with positive feedback: external pressure-triggering of a star-forming disc galaxy

open access: yes, 2015
Feedback in massive galaxies generally involves quenching of star formation, a favored candidate being outflows from a central supermassive black hole.
Bieri, Rebekka   +3 more
core   +2 more sources

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

Noninvasive positive pressure ventilation in acute respiratory failure due to COPD vs other causes: Effectiveness and predictors of failure in a respiratory ICU in North India

open access: yesInternational Journal of COPD, 2008
Ritesh Agarwal, Rajesh Gupta, Ashutosh N Aggarwal, Dheeraj GuptaDepartment of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, IndiaObjectives: To determine the effectiveness of noninvasive positive pressure ...
Ritesh Agarwal   +3 more
doaj  

Effect of Pressure on Superconducting Ca-intercalated Graphite CaC$_6$

open access: yes, 2006
The pressure effect on the superconducting transition temperature ($T_c$) of the newly-discovered Ca-intercalated graphite compound CaC$_6$ has been investigated up to $\sim$ 16 kbar. $T_c$ is found to increase under pressure with a large relative ratio $
D. Vanderbilt   +6 more
core   +1 more source

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