Abstract In the present work, formation of vector-type vortex structures in isotropic media is studied. These vortices exist electric field components and generate a depolarization vector laser spot. Their behavior governed by system amplitude equations. Additionally, new solutions have been found that describe similar types an optical fiber. The admit only amplitude-type singularities. observe...

Doughnut shaped hybridization patterns on DNA microarrays are mainly allocated to spotting or drying artifacts. The present study reports on results obtained from four different approaches that when combined generate a better view on the occurrence of these patterns. This study points out that doughnuts are not only formed during the spotting and drying process, but the hybridization process it...

BACKGROUND Developmental studies on butterfly wing color patterns often focus on eyespots. A typical eyespot (such as that of Bicyclus anynana) has a few concentric rings of dark and light colors and a white spot (called a focus) at the center. The prospective eyespot center during the early pupal stage is known to act as an organizing center. It has often been assumed, according to gradient mo...

We present observations at near-infrared wavelengths (1–5 lm) of Jupiter’s north polar region and Northern Red Oval (NN-LRS-1). The observations were taken with the near-infrared camera NIRC2 coupled to the adaptive optics system on the 10-mW.M. Keck Telescope on UT 21 August 2010. At 5-lm Jupiter’s disk reveals considerable structure, including small bright rings which appear to surround all s...

BACKGROUND Fundus autofluorescence studies in eyes with macular holes (MHs) have shown a hyperautofluorescent spot corresponding to the hole and a hypoautofluorescent ring corresponding to the fluid cuff surrounding the hole. The purpose of this report is to present three cases of MH with a different fundus autofluorescence pattern. CASE REPORTS Case 1 was a 62-year-old woman who did not know...