In this study, peracetic acid (PAA) was investigated as a novel blowing agent for the preparation of porous alkali-activated materials from metakaolin or blast furnace slag by direct foaming method. PAA is an organic peroxide with lower stability OO bond in comparison to H2O2. It also introduces acetate anions system, which can chelate cations potentially increase extent precursor dissolution a...

i Reduction of Unsteady Stator – Rotor Interaction by Trailing Edge Blowing Using MEMS Based Microvalves by Nikhil M. Rao Dr. W.F. Ng, Chairman Mechanical Engineering (ABSTRACT) This research performs an experimental study of a trailing edge blowing system that can adapt to variations in flow parameters and reduce the unsteady stator-rotor interaction at all engine operating conditions. The fan...

This work investigates the ability of Coanda jet blowing to modify the base pressure of a cylindrical body aligned axially in a flow, and thereby, produce overall drag reduction. It is found that blowing through one or two slot jets concentric to the outer body circumference can significantly influence the entire base flow region. The recirculating wake is eliminated and is replaced by freestre...

On 31 July 2003 BfR provided information on the occurrence of semicarbazide (SEM) as a contaminant in various foods. This was based on information from the European Food Safety Authority (EFSA). The common feature of these foods was that they were packaged in glass jars or bottles. Initial study results indicated a semicarbazide content of up to 15 μg/kg food. One possible source given for semi...

Motivated by the study of the potential use of blowing and venting operations of ballast tanks in manned submarines as an alternative control system for manoeuvring, we first propose a mathematical model for these operations. This model extends previous works where only blowing is considered. Then, the model is applied to the control of an emergency manoeuvre by using only blowing and venting. ...