A radiological sign can sometimes resemble a particular object or pattern and is often highly suggestive of a group of similar pathologies. Awareness of such similarities can shorten the differential diagnosis list. Many such signs have been described for X-ray and computed tomography (CT) images. In this article, we present the most frequently encountered plain film and CT signs in chest imagi...

In 2003 citizens of Canada, the United Kingdom, and France paid an average of 34-59 percent of what Americans paid for a similar market basket of pharmaceuticals. If the Medicare program were to pay comparable prices for pharmaceuticals, it would be possible to eliminate the "doughnut hole" in its prescription drug benefit and keep Medicare drug spending within the overall limits established by...

Qualitative descriptions of spatial properties and relationships, and qualitative spatial reasoning, are of fundamental importance in human problem-solving: even where we use quantitative approaches, these depend on an accompanying qualitative representation. The work described is aimed at for-malising some topological aspects of qualitative spatial description and reasoning. The paper continue...

Doughnut giant Krispy Kreme is offering “sweet support” to Americans who protect themselves against SARS-CoV-2 by giving a free glazed doughnut anyone provides proof of having had jab. The company’s marketing—I mean, generosity—doesn’t stop there. Glossy, sugar coated, deep fried rings dough are being dropped off at some US vaccination centres for staff delivering the vaccines. Uhmm. Well, yo...

A novel experimental technique for the realisation of optical Faraday effect using Laguerre- Gaussian (LG) light is described. The experiment employs a zero-order vortex half-wave retarder to generate radially or azimuthally-polarised LG doughnut beam. emerging from then passes through linear polariser, which gives rise two intensity lobes, with orientation gap between lobes pointing parallel (...

We demonstrate how droplet templates dispensed on superhydrophobic substrates can be used to fabricate both shape-anisotropic ("doughnut") and composition-anisotropic ("patchy magnetic") supraparticles. The macroscopic shape of the closely-packed particle assemblies is guided by the droplet meniscus. Aqueous droplets of monodisperse microsphere suspensions dispensed on the substrates initially ...

"The "focused doughnut", a single-cycle electromagnetic perturbation of toroidal topology with inseparable time and spatial dependencies propagates at the speed of light in vacuum, as was shown by Hellwarth and Nouchi in 1996. While normal incidence reflection and refraction of conventional electromagnetic pulses in isotropic media do not lead to polarization changes, "focused doughnut" pulses ...