Time-cost trade-off is one of the most important subjects in project management and of interest to contractors. The goal of time-cost trade-off is sensivity analysis of project costs to changes in activity duration in order to obtain the best combination of activity duration decrease, in a way that the sum of project costs is minimized. In the heuristics presented in this area, time crashing is...

Abstract: Problems such as the difficulty of the selection of processing parameters and the large quantity of experimental work exist in the morphological evolutions of Semisolid Metal (SSM) processing. In order to deal with these existing problems, and to identify the effect of the processing parameters, (i.e. shearing rate-time-temperature) combinations on particle size and shape factor, ...

Abstract Transcatheter aortic valve implantation complicated by infectious endocarditis (TAVI–IE) is an uncommon clinical event with a death rate of 24–46%. Despite several risk factors (young age, sex male, CKD, concurrent PM implantation, residual insufficiency and valve–in–valve implantation) have been reported, the identification this scenario remains diagnostic challange due to less sensiv...

in iran, most mountainous watersheds do not have enough hydrometery stations and defective stations have sparse data. because of limited availability of hydrologic data, watershed modeling plays a crucial role in development of local resources. in this study, swat was applied to simulate runoff in marun dam (idanak) watershed, a sub-basin of marun catchment. calibration and sensivity analyses w...

introduction: the aim of this study was to setup, optimize and introduce a sensitive and specific pcr detection method for identification of neisseria meningitidis dna in clinical samples. material and methods: capsular transport gene a (ctra) was selected as a specific target sequence. this primer pair amplifies 101bp of the target gene. neisseria meningitidis strain: atcc; 13090 and neisseria...

myocardial fractional flow reserve (ffr) is a new index of the functional significance of intermediate coronary stenoses that is calculated from pressure measurements made during coronary arteriography. the aim of this study was to evaluate the correlation between non-hyperemic coronary pressure dicrotic notch and fractional flow reserve (ffr). a consecutive of 114 patients (73 men and 41 women...

BACKGROUND The aim of the present study was to evaluate insulin resistance (IR), glucose tolerance status and cardiovascular risk factors in first degree relatives of patients with polycystic ovary syndrome (PCOS). METHODS A total of 120 family members [Mothers(PCOS) (n = 40), Fathers(PCOS) (n = 38), Sisters(PCOS) (n = 25) and Brothers(PCOS) (n = 17)] of 55 patients with PCOS and 75 unrelated...