Atrial fibrillation (AF) is a major risk factor for stroke, especially in the elderly. Increased life expectancies mean that AF-related stroke is a growing global public health concern. Improvements in the detection, treatment and prevention of the consequences of AF have occurred in recent years. However, the extent to which these improvements have impacted on the prevalence of AF, the risk of...

The article addresses the failure of the scientific community to create an effective mechanism to protect the integrity of the scientific literature from improper influence by vested interests. The seriousness of this threat is increasingly recognized. Scientists willing to distort scientific research to serve vested interests receive millions of dollars for their services. Organizations such a...

Dust storms are catastrophic natural disasters that beside other disasters frequency occur in the arid and semiaridregions worldwide. Drought occurrence, climate aridity, dryness of the Hamoun Lake cause strong winds to below.These conditions have been prepared for dust storms in Sistan region. The damages to Sistan society have beenmeasured using different criteria. The result shows that, peak...

in developed countries, improvement has been made in service providing industries along with the improvements made in quality assurance and management skills and systems in the domain of manufacturing industries. unfortunately, in developing countries, primary needs have led these countries to focus their attention illogically and solely on production and they disregard the quality of services....

An attempt has been made to investigate the effect of SiO2 nanoparticles on the conductivity of polypyrrole conducting polymeric films prepared by an electrochemical method. The obtained nanocomposites were characterized by FTIR, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). The results indicate that the conductivity of the nanoco...