background: congenital heart disease (chd) is the most common congenital anomaly in newborns. this study was performed to determine the live birth incidence of chd by ethnicity and sex in gorgan, northern iran. methods: in this longitudinal, hospital-based study, 18162 live births in dezyani hospital in gorgan, north of iran, were screened for chd, from 2007 through 2009. clinical examination, ...

The High Resolution Stereo Camera (HRSC) on Mars Express covers the surface of our neighboring planet in full color and 3D. Altogether, nine channels are obtained in stereo angles between ±18.9°. These data sets are well suited to derive Digital Terrain Models (DTM) and, based on that, color orthoimages. Both, photogrammetric standard processing of HRSC data as well as alternative and/or supple...

highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (n) or of copolymerizing them with ethene (e) or propene (p). the polymers obtained show exciting structures and properties. e-n copolymers are industrially produced materials, with variable and high glass transitions depending on the wide range of their micr...

Submonolayer epitaxy in the presence of defect sites on the substrate is studied by means of a level-set method. Here, island nucleations occur by the creation of dimers and defect-monomer pairs. We present results for the scaled island size distribution (ISD) for growth with different densities for both random and regularly positioned defects. The dynamics show that for large D/F and defect de...

background: closure of patent ductus arteriosus (pda), ventricular septal defect (vsd) and atrial septal defect (asd) can be done surgically or by device. this study was designed to compare the total cost of surgical or device closures of pda, asd or vsd for iranian patients. methods: this is a cross-sectional study, conducted from january 1, 2005 until january 1, 2006 in two large heart center...

In this paper, the fatigue design of AM components is addressed through Topology Optimization. Two defect-driven methodologies, which model response in finite life range and account for experimental scatter, are compared. The first approach based on defect distribution marginal P-S-N curves. second method models size-effect by accounting stress within loaded material. two approaches used to ass...