This study aims at improving the knowledge on effects of gas injection, bubbles sizes and contaminants oxygen transfer in microbubble clouds. First injection are studied linked to several parameters that change together with changes flow rate, namely bubble rise velocities. Oxygen is then presence shown affect size distribution, modify dynamics interfacial mass transfer. efficiencies also measu...

It is attempt in pulverized coal injection (PCI) in blast furnace tuyeres to increase the injection rate without increasing the amount of unburned char inside the stack of the blast furnace. The unburned char can cause problems in the blast furnace operation, such as reduced permeability, undesirable gas/temperature distribution, excessive coke erosion and significant char carryover. In the nea...

The typical defect reactions at the metal/oxide interface, which explain growth and breakdown of passive oxide films in corrosion, include creating metal oxygen vacancies. While creation coalescence vacancies are well documented, there relatively few observations on nanoscale details transport near interface. We report here a new mechanism injection into metal. Fast slow passivation (i.e., corr...

BACKGROUND Pain at the site of rocuronium injection is a common side-effect in pediatric patients. This prospective, randomized, double-blind study evaluated the efficacy of a combination of nitrous oxide and lidocaine pretreatment on withdrawal response during rocuronium injection in children. METHODS Sixty six pediatric patients, ages 5 to 12 years, were randomly assigned to two groups. The...

Blood oxygen level-dependent (BOLD) MRI data of kidney, while indicative of tissue oxygenation level (Po2), is in fact influenced by multiple confounding factors, such as R2, perfusion, oxygen permeability, and hematocrit. We aim to explore the feasibility of extracting tissue Po2 from renal BOLD data. A method of two steps was proposed: first, a Monte Carlo simulation to estimate blood oxygen ...

Abstract This paper presents the performance of pressure-sensitive paint (PSP) for direct measurement species concentration on a porous surface with mass injection. It is used to measure ability an injected gas reduce transfer freestream surface. A alumina sample was sprayed PSP luminophore solution. The installed into flat plate model and exposed hypersonic cross-flows in Oxford High-Density T...