We show analytically that bright and dark spatial self-similar waves can propagate in graded-index amplifiers exhibiting self-focusing or self-defocusing Kerr nonlinearities. The intensity profiles of the novel waves are identical with those of fundamental bright or dark spatial solitons supported by homogeneous passive waveguides with the same type of nonlinearity. Thus, we reveal a previously...

We consider nonlinear propagation of optical pulses in a cubic-quintic nonlinear medium wherein the pulse propagation is governed by the generalized nonlinear Schrödinger equation with varying dispersion, nonlinearity and gain/loss. Using the self-similar analysis, we present the generation of chirped bright solitons in the anomalous dispersion regime as well as the normal dispersion regime und...

Background Recently, there has been a fast growth in the use of different kind of media especially in adolescents. Media literacy education is supported by numerous national organizations and institute as a potential tool to decrease negative media effects and to increase desirable use of media. However, there are little documents about their effects. This study was conducted to investigate the...

in this article, we have investigated the role of dimethylamine (dma), tributylamine (tba), triethanoleamine (tea), trishydroxymethylamine (trizma), and hexamethyleneterraamine (hmta), in the formation of zeolitic compounds. the experiments were carried out in acidic and basic media using si/al< 10 and si/a1>10. the structure of the resulting synthetic zeolites were similar to natro davyne, amm...

In this article, we have investigated the role of dimethylamine (DMA), tributylamine (TBA), Triethanoleamine (TEA), Trishydroxymethylamine (TRIZMA), and Hexamethyleneterraamine (HMTA), in the formation of zeolitic compounds. The experiments were carried out in acidic and basic media using Si/Al< 10 and Si/A1>10. The structure of the resulting synthetic zeolites were similar to Natro Davyne,...

The problem of unbounded uniaxial chiral omega media in the presence of both static electric and magnetic point charges is investigated. For this purpose scalar electric and magnetic potentials in these media are introduced. Using these potentials, the corresponding electric and magnetic fields are determined. The similar problem of static electric and magnetic current sources with the goal of ...

conclusions compared to iohexol and iopamidol, iodixanol use was associated with a lower patient perception of heat and lower hr while maintaining similar contrast-to-noise and signal-to-noise ratios. results baseline hr was similar across the patients assigned to iohexol, iopamidol, and iodixanol (65.3 ± 9.7, 66.9 ± 10.9, and 65.3 ± 13.3, respectively; p = ns). compared to iohexol and iopamido...

Generalized frames are an extension of frames in Hilbert  spaces and  Hilbert $C^*$-modules. In this paper, the concept ''Similar" for modular $g$-frames is introduced and all of operator duals (ordinary duals) of similar $g$-frames with respect to each other are characterized. Also, an operator dual of a given $g$-frame is studied where $g$-frame is constructed by a primary $g$-frame and an or...