Propagation and spatial evolution of light beams in nonlinear media is a central topic of nonlinear optical dynamics. There has been continuing interest in this topic since the initial investigations of self-trapping of light beams in nonlinear media @1,2#. Analysis of the stability and nonlinear evolution of solitary-wave solutions of nonlinear propagation equations is one of the most crucial ...

PhoB is the response regulator of the Pho regulon. It is composed of two distinct domains, an N-terminal receiver domain and a C-terminal output domain that binds DNA and interacts with sigma(70) to activate transcription of the Pho regulon. Phosphorylation of the receiver domain is required for activation of the protein. The mechanism of activation by phosphorylation has not yet been determine...

solitons are ubiquitous and exist in almost every area from sky to bottom. for solitons to appear, the relevant equation of motion must be nonlinear. in the present study, we deal with the korteweg-devries (kdv), modi ed korteweg-de vries (mkdv) and regularised longwave (rlw) equations using homotopy perturbation method (hpm). the algorithm makes use of the hpm to determine the initial expansio...

introduction percutaneous nephrolithotomy (pcnl) is a standard, safe, and efficient method for removing large renal calculi. despite development of endourologic equipment, complications of the pcnl are still prevalent. even though therapeutic modalities such as mini-micro pcnl have been developed in recent years, the complications are a serious concern yet. the most important complication is he...

In the current study, twin wind blades are designed, fabricated and the effect of various gap ratio (g*) at various angle of attacks (α) on a next to each other twin wind blades are examined in an open-channel wind tunnel. Aerodynamic forces and moments are determined by using three-constraint force balancer. For gap ratio of zero, the aerodynamic attributes are like those of a solitary wind bl...

Head-on collision and overtaking collision between a KdV solitary wave and an envelope solitary wave are first studied in present paper by using Particle-in-cell (PIC) method in a dusty plasma. There are phase shifts of the KdV solitary wave in both head-on collision and the overtaking collision, while no phase shift is found for the envelop solitary wave in any cases. The remarkable difference...

where 3 depends’on the cross section area of the topography [see Miles’ Eqs. (5.2) and (5.3)‘]. A year later, VandenBroeck published his discovery of two smooth solitary wave solutions for the same physical model but from the perspective of direct numerical integration of Laplace equation with a free boundary and with nonlinear boundary conditions.2 One of his solitary waves is higher than the ...

We study here the existence of solitary wave solutions of a generalized twocomponent Camassa-Holm system. In addition to those smooth solitary-wave solutions, we show that there are solitary waves with singularities: peaked and cusped solitary waves. We also demonstrate that all smooth solitary waves are orbitally stable in the energy space. We finally give a sufficient condition for global str...

The possible solitary wave solutions for a general Boussinesq (GBQ) type fluid model are studied analytically. After proving the non-Painlevé integrability of the model, the first type of exact explicit travelling solitary wave with a special velocity selection is found by the truncated Painlevé expansion. The general solitary waves with different travelling velocities can be studied by casting...

abstract gastric cancer is one of the most common and most fatal neoplasms in human. its skeletal metastasis is less frequent, particularly when solitary. the objective of this article is to represent a case of solitary fibular metastasis from this cancer not reported before based on medline search.