Marco A. Duran

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A procedure is proposed for simultaneously handling the problem of optimal heat integration while performing the optimization of process flowsheets. The method is based on including a set of constraints into the nonlinear process optimization problem so as to ensure that the minimum utility target for heat recovery networks is featured. These heat(More)
World wide crude transportation is the central logistics operation that links the upstream and downstream functions and plays a crucial role in the global supply chain management in the oil industry. In this work, we develop a decision support system to investigate and improve the combined inventory and transportation system in a representative world-wide(More)
The World Health Organization (WHO) classification of tumors of hematopoietic and lymphoid tissues (2001) defined a provisional entity named refractory anemia with ringed sideroblasts associated to marked thrombocytosis (RARS-MT). Diagnosis of RARS-MT requires more than 15% of ringed sideroblasts in bone marrow aspirate and the existence of a thrombocytosis(More)
We report on pathologic examination of three autopsied newborns with Jarcho-Levin syndrome. The most important abnormalities noted were multiple extraskeletical defects such as cardiovascular, urogenital, respiratory, and central nervous system malformations. These cases add new information to the multiple vertebral segmentation defects found in this(More)
This is a report of two postmortem cases with sequence of right laterality and spleen. The presence of visceral right laterality and spleen is discordant with that indicated for the asplenia syndrome. The unusual presence of spleen, as in these two cases and previously reported cases, does not faithfully indicate the laterality sequence. Its recommended(More)
A 66-year-old man was admitted with acute oliguric renal failure. The patient was known to have chronic heart failure (ejection fraction 13%) and his medication included furosemide, digoxin and triamterene. Physical examination was unremarkable, and blood pressure was 170/80 mm Hg. Serum creatinine was 1,173 mumol/l. Renal ultrasound, CT scan and angiogram(More)
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