Abstract This paper describes an optimization procedure for the synthesis of complex distillation configurations. A superstructure based on the Reversible Distillation Sequence Model (RDSM) is proposed embedding all possible alternative designs using tray-by-tray models. Generalized Disjunctive Programming (GDP) is used to model the superstructure. Due to the large size and complexity of the fo...

Different control strategies of bed temperature and moisture were investigated using various inlet air temperatures and air fluxes in both the ordinary packed bed bioreactor (without cooling water in the jacket) and the bioreactor with cooling water in jacket. The experiments were carried out within a 1-L solid-state packed bed bioreactor in which Aspergillus niger was cultivated on wheat bran....

Background:Various impression techniques have been proposed for making implant prostheses. Impressions are made at level –closed and open tray impressions, as well abutment impressions. Closed copings used to make the The limitations associated with copings, including expensive ones, pose a significant challenge in limited mouth-opening cases, customization of is not feasible.Aim: This study ai...

BACKGROUND Health care costs in Canada continue to rise. As a result of this relentless increase in healthcare spending, ways to increase efficiency and decrease cost are constantly being sought. Surgical treatment is the mainstay of therapy for many conditions in the field of Otolaryngology- Head and Neck Surgery. The evidence suggests that room exists to optimize tray efficiency as a novel me...

As per definition, the bioreactor is the designed space where biological reactions take place. Hence, the bioreactor is essentially an engineering achievement and its design a challenge for bioengineers. The bioreactor should create a biosphere that as profoundly and adequately as possible provides the ideal environment for the biological reaction. The path for reaching, attaining, andmaintaini...

A rigorous model for staged high purity distillation based on rst principles is developped. The importance of the tray hydraulics to obtain good agreement between simulation and experiment is demonstrated. Analytical expressions to derive the hydraulic time constants l, v and the vapor constant for models with simpli ed tray hydraulics are presented. The validity of these key parameters is veri...

• Per AFNOR Certification guidelines, a preliminary study was conducted where the relative accuracy, linearity, detection and quantification limits, selectivity (inclusivity and exclusivity) and practicability of the Colilert-18/Quanti-Tray method were assessed using samples of distribution water and fountain water spiked with strains of both coliform bacteria and E. coli. All the assessed perf...