The noncommutative extension of a dynamical 2-dimensional space-time is given and some of its properties discussed. Wick rotation to euclidean signature yields a surface which has as commutative limit the doughnut but in a singular limit in which the radius of the hole tends to zero.

Kick out the reticulons to close the envelope The nuclear envelope reforms when tube-forming reticulons are ejected from chromatin-associated ER tubules, say Anderson and Hetzer. The nuclear envelope was once thought to disintegrate into vesicles during mitosis, but growing evidence suggests it is absorbed into the endoplasmic reticulum. Recent in vitro experiments by these authors have shown t...

The hydrogen economy requires the right conditions to produce by sustainable routes and provide it local international markets for suitable applications. This study evaluated political, economic, social, technological, legal, environmental (PESTLE) that can be instrumental in adopting technologies most effectively encapsulating aspects relevant key stakeholders from technology developers throug...

We present characteristic doughnut-shaped image patterns of gold nanorods embedded in a thin layer of a gel matrix observed under a dark-field microscope. The characteristic scattering field distributions allow us to estimate the spatial orientation of single gold nanorods. The measured scattering patterns are further verified by a simulation study.

Ultrasound guidance during peripheral nerve block is a revolutionary approach in clinical practice. For a successful block, local anesthetics (LA) should surround the nerve circumferentially. Different definitions have been used to describe the ultrasound image for a successful block. For example, in the infraclavicular area, “U”-shaped LA distribution is suggested, whereas “doughnut sign” is r...

In this article we propose a new type of optical vortex, the X-type vortex. This vortex inherits and develops conventional noncanonical i.e., it no longer has constant phase gradient around center, while intensity keeps invariant azimuthally. The strongly focusing properties its effect on beam shaping in three-dimensional (3D) fields are analyzed. interesting phenomena, which cannot be seen can...

We investigated the effect of deformation of natural rubbers (NR) resulting from the high centrifugal pressure of fast magicangle spinning (MAS) on 13C NMR spectra. The solid state 13C MAS NMR spectrum with high-power 1H dipolar decoupling (DD) of NR presents liquid-like, very narrow signals (full width at half height, FWHH, is less than 10 Hz). However, the static state 13C DD NMR spectrum of ...