We study the optimal performance of a three-level quantum refrigerator using trade-off objective function, $\Omega$ which represents compromise between energy benefits and losses thermal device. First, we optimize our by employing two-parameter optimization scheme show that first two-terms in series expansion obtained coefficient (COP) match with those some classical models refrigerator. Then, ...

The aim of this empirical study is to explore the trade-off model and pecking order model of capital structure. The investigation is performed using panel data procedures for a sample of 76 firms listed in Tehran Stock Exchange during 2007-2010.The study employs OLS regression model in examining the capital structure of firms in Iran. The study employs variables reflecting differing theoretical...

to evaluate off-label and off-nccn guidelines uses of antineoplastic drugs in a major chinese hospital.totally 1122 patients were selected from july to december 2011. then, the off-label and off-nccn guidelines uses of antineoplastic drugs were analyzed.in 798 of 1122 patients (71.12%), drugs were used for off-label. in 317 of 1122 patients (28.25%), the drugs were prescribed for off-label and ...

background early predictive biomarkers for acute kidney injury (aki) such as neutrophil elatinase-associated lipocalin (ngal) could identify patients who may benefit from early initiation of treatment. objectives we aimed to obtain a cut off point for aki prediction by urine ngal in kidney transplantation. patients and methods in a prospective cohort study, 64 adult who underwent kidney transpl...

background: introduction: searching for an ideal marker for diagnosing neonatal infection is still an important concern in every country. there are many biomarkers reported for neonatal sepsis. haptoglobin is an acute phase reactants which rise in response to infection and injuries. in this report we discussed the efficacy of serum haptoglobin level in different cut off levels in early onset ne...