heart failure is common in patients with chronic renal disease, either as a complication of renal failure or from shared risk factors, or is the major cause of death in patients on dialysis. at present, end stage renal disease (esrd) patients who have systolic heart failure are considered high-risk for surgery; and nephrologists and cardiologists are reluctant to refer these patients for kidney...

This paper proposes a single-phase seven-level inverter for grid-connected photovoltaic systems, with a novel pulsewidth-modulated (PWM) control scheme. Three reference signals that are identical to each other with an offset that is equivalent to the amplitude of the triangular carrier signal were used to generate the PWM signals. The inverter is capable of producing seven levels of output-volt...

iran contains 36 named endemic reptile species in 17 genera and seven families. the most endemic and speciose family is the gekkonidae, followed by the lacertidae. these two families collectively dominate with 22 species (or 60.1%) of the total endemic herpetofauna. twenty one endemics are known only from a single location or restricted area within a single physiographic region. an analysis of ...

OBJECTIVE To investigate whether strength of social feedback, i.e. other people who concur (or do not concur) with one's own answer to a question, influences the way one answers health questions. METHODS Online prospective study. Two hundred and twenty-seven undergraduate students were recruited to use an online search engine to answer six health questions. Subjects recorded their pre- and po...

in this study, 1600 pregnant women who had referred to two prenatal clinics (imam khomeini and mirza kochek-khan) were investigated. ninety cases of asymptomatic bacteriuria were observed 77 of those cooperated with us until the end of our study. the subjects, who were within the 14-36 weeks of gestational age, were randomly divided into two groups: group a received the medicine (amoxicillin) i...