The bright solar corona entirely consists of closed magnetic loops rooted in the photosphere. Photospheric motions are important drivers stressing, which eventually leads to energy release into heat. These chaotic and obviously different from one footpoint other, fact, there is strong evidence that finely stranded. One may also expect transient variations along field lines, but at a glance, cor...

In this paper a super-twisting-like structure with adaptive gains is proposed. The structure is parameterized by two scalar gains, both of which adapt, and by an additional time-varying term. The magnitudes of the adaptive terms are allowed to both increase and decrease as appropriate so that they are as small as possible, in the sense that they do not unnecessarily over-bound the uncertainty, ...

Most birds have an opposable digit 1 (hallux) allowing the foot to grasp, which evolved from the non-opposable hallux of early theropod dinosaurs. An important morphological difference with early theropods is the twisting of the long axis of its metatarsal. Here, we show how embryonic musculature and the onset of its activity are required for twisting of metatarsal 1 (Mt1) and retroversion of t...

The twisting function describing nonstandard (super-Jordanian) quantum deformation of osp(1|2) is given in explicite closed form. The quantum coproducts and universal R-matrix are presented. The non-uniqueness of twisting function as well as two real forms of deformed osp(1|2) superalgebras are considered. One real quantum osp(1|2) superalgebra is interpreted as describing the κ-deformation of ...

Families of inextensible fibers forming a surface are considered. Each fiber supports a twisting couple proportional to the torsion of the fiber. The strain energy density is written in an additive form, such that the contributions due to shearing, twisting and bending effects are taken into account separately. The equilibrium equations, here obtained, are a particular case of the ones obtained...

The excited state isomerization of thioflavin T (ThT) is responsible for the quenching of its fluorescence in a nonrestricted environment. The fluorescence quantum yield increases substantially upon binding to amyloid fibers. Simulations reveal that the variation of the twisting angle between benzothiazole and benzene groups (φ1) is responsible for the subpicosecond fluorescence quenching. The ...

How transcriptional output is orchestrated in mammalian genomes is an area of intense research. The structural organization within the nucleus and the physical association between regulatory elements are considered critical components in this regulation. Recent work published in Nature (de Wit et al, 2013) applied the Circular Chromosome Conformation Capture (4C) method at high resolution in pl...

BACKGROUND Crocodilians exhibit a spectrum of rostral shape from long snouted (longirostrine), through to short snouted (brevirostrine) morphologies. The proportional length of the mandibular symphysis correlates consistently with rostral shape, forming as much as 50% of the mandible's length in longirostrine forms, but 10% in brevirostrine crocodilians. Here we analyse the structural consequen...