Gallstone ileus is a rare but potentially serious complication of cholelithiasis. It is usually preceded by history of biliary symptoms. It usually occurs as a result of a large gallstone creating and passing through a cholecysto-enteric fistula. Most of the time, the stone will pass the GI tract without any problems, but large enough stones can cause obstruction. The two most common locations ...

This policy brief presents information about the walking habits of California adults based on data from the 2003 California Health Interview Survey (CHIS 2003). We examine the prevalence of regular walking and no walking by socio-demographic and neighborhood characteristics. Regular walking is defined as walking on at least five separate occasions for a combined total of at least 150 minutes in...

In this paper, we present some new relationships between graph theory and the geometry of Riemann surfaces. For the most part, we present these relationships in terms of questions and open problems. Since these questions have arisen from a number of recent developments, we also describe these developments so as to provide a context for these questions. In fact, our main interest here is to pres...

We revisit the problem of the quarter-filled one-dimensional Kondo lattice model, for which the existence of a dimerized phase and a nonzero charge gap had been reported by Xavier et al. Phys. Rev. Lett. 90, 247204 2003 . Recently, some objections were raised claiming that the system is neither dimerized nor has a charge gap. In the interest of clarifying this important issue, we show that thes...

Nanophotonic waveguides are the building blocks of integrated photonics. To date, while quarter-wave plates (QWPs) are widely used as common components for a wide range of applications in free space, there are almost no reports of Integratable QWPs being able to manipulate the angular momentum (AM) of photons inside nanophotonic waveguides. Here, we demonstrate two kinds of Integratable QWPs re...

We consider the class of univalent log-harmonic mappings on unit disk. Firstly, we present general idea constructing Koebe mappings, right half-plane and two-slits then show precise ranges these mappings. Moreover, coefficient estimates for starlike are obtained. Growth distortion theorems certain special subclasses studied. Finally, propose two conjectures, namely, covering conjectures.