Results 71 to 80 of about 1,170,010 (258)

Fixed points of rotations of n-sphere

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
We show that every rotation of an even-dimensional sphere must have a fixed point.
Nagabhushana Prabhu
doaj   +1 more source

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

Generating Geometric Patterns Using Complex Polynomials and Iterative Schemes

open access: yesAxioms
Iterative procedures have been proved as a milestone in the generation of fractals. This paper presents a novel approach for generating and visualizing fractals, specifically Mandelbrot and Julia sets, by utilizing complex polynomials of the form QC(p ...
Asifa Tassaddiq   +4 more
doaj   +1 more source

Some fixed points of expansion mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
Wang et al. [11] proved some fixed point theorems on expansion mappings, which correspond some contractive mappings. Recently, several authors generalized their results by some ways.
H. K. Pathak, S. M. Kang, J. W. Ryu
doaj   +1 more source

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

Fixed Points for Discontinuous Monotone Operators

open access: yesFixed Point Theory and Applications, 2010
We obtain some new existence theorems of the maximal and minimal fixed points for discontinuous monotone operator on an order interval in an ordered normed space. Moreover, the maximal and minimal fixed points can be achieved by monotone iterative method
Yujun Cui, Xingqiu Zhang
doaj   +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

Three-point fix tympanoplasty

open access: yesActa Oto-Laryngologica, 2015
The three-point fix tympanoplasty procedure is a stable and effective technique - with a high degree of graft take and satisfactory hearing results - for reconstruction of most tympanic membrane (TM) perforations.It is difficult to repair a TM perforation, including subtotal perforation, involving the anterior part of the annulus.
Dae Bo, Shim   +3 more
openaire   +3 more sources

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

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