The intensification of gas–liquid flows with a periodic, constricted oscillatory-meso tube (2007)
Reis, N., Mena, P. C., Vicente, A. A., Teixeira, J. A., Rocha, F. A.
The experimental study of gas dispersion in a vertical periodically, constricted, oscillatory meso-tube (OMT) is herein presented. Water was continuously pumped through the OMT in the laminar flow...
The bubble size distribution and O2 mass transfer in an oscillating, meso-scale tube (2007)
Reis, N., Mena, P. C., Rocha, F. A., Vicente, A. A., Teixeira, J. A.
This work aims at characterizing bubble size distribution and its control in a small-scale, constricted tube in the presence of an oscillating flow. From previous works, it became clear that the full...
Proof-of-concept of a novel micro-bioreactor for fast development of industrial bioprocesses (2006)
Reis, N., Gonçalves, C. N., Vicente, A. A., Teixeira, J. A.
The experimental performance of a novel micro-bioreactor envisaged for parallel screening and development of industrial bioprocesses has been tested in this work. The micro-bioreactor with an...
Novel oscillatory flow reactors for biotechnological applications (2006)
Tese de Doutoramento em Engenharia Química e Biológica
Reis, N., Gonçalves, C. N., Aguedo, Mário, Gomes, Nelma, Teixeira, J. A., Vicente, A. A.
A novel micro-bioreactor based on the oscillatory flow technology was applied to the scale-down of the biotechnological production of γ-decalactone. A decrease up to 50% of the time required to...
Azevedo, N. F., Pinto, A. R., Reis, N., Vieira, M. J., Keevil, C. W.
Although molecular techniques have identified Helicobacter pylori in drinking water-associated biofilms, there is a lack of studies reporting what factors affect the attachment of the bacterium to...
The challenging modelling of kLa in a periodic constricted small-scale tube (2005)
Reis, N., Vicente, A. A., Teixeira, J. A.
An extensive use in chemistry, biological and pharmaceutical laboratories is envisaged for a novel continuous screening reactor based on the oscillatory flow technology (Harvey, 2001). The basic unit...
Fluid mechanics and design aspects of a novel oscillatory flow screening mesoreactor (2005)
Reis, N., Harvey, Adam, Mackley, M. R., Vicente, A. A., Teixeira, J. A.
A novel, continuous, oscillatory flow screening mesoreactor, composed of tubes with smooth periodic constrictions, is presented as a new option for small-scale reaction engineering applications,...
Reis, N., Teixeira, J. A., Vicente, A. A.
This paper demonstrates the effectiveness of using fibre optic micro-probes for the measurement of dispersion and mixing in continuous flow within a novel screening reactor operating under...
The role of biofilms in the transmission of Helicobacter pylori through drinking water (2005)
Azevedo, N. F., Pinto, A. R., Reis, N., Pacheco, A. P., Keevil, C. W., Vieira, M. J.
Helicobacter pylori has a major role in promoting risk of peptic ulcer disease and non-cardia adenocarcinoma of the stomach and is present in more than 80% of the Portuguese population. The route of...
Castro, I., Reis, N., Teixeira, J. A., Vicente, A. A.
Continuous food-sterilization processes often involve the flow of liquids or solid-liquid mixtures, frequently highly viscous and with non-Newtonian behaviour, in pipes and reactors. Heat treatment...
The use of fibre optic probes for flow monitoring within a small-scale tube (2004)
Reis, N., Vicente, A. A., Teixeira, J. A., Mackley, M. R.
This paper demonstrates the effectiveness of using fibre optic micro-probes for the measurement of dispersion and mixing in continuous flow within small-scale tubes under oscillatory flow conditions....
CFD simulations of RTD of a strawberry pulp in a continuous ohmic heater (2004)
Castro, I., Reis, N., Teixeira, J. A., Vicente, A. A.
A pilot ohmic heater is to be tested for the continuous aseptic processing of strawberry pulps and jams. The hydrodynamics and the fluid residence time distribution (RTD) have been experimentally...
Residence times and mixing of a novel continuous oscillatory flow screening reactor (2004)
Reis, N., Vicente, A. A., Teixeira, J. A., Mackley, M. R.
This paper is concernedwith the fluidmechanics andmixing performance of a novel oscillatory flow screening reactor. Using fibre optic probes, a mixing coefficient k_m is determinedfor the system as a...
Castro, I., Reis, N., Teixeira, J. A., Vicente, A. A.
Neste trabalho efectuaram-se simulações numéricas dos padrões de fluxo num aquecedor óhmico contínuo, em estado estacionário, com recurso ao programa Fluent™. Para tal, criou-se uma grelha...
Residence times and mixing of a novel continuous oscillatory flow meso reactor (2004)
Reis, N., Vicente, A. A., Teixeira, J. A., Mackley, M. R.
A novel meso reactor based on oscillatory flow technology (Harvey et al., 2001) has been recently presented in Harvey et al. (2003) as a new technology for reaction engineering and particle...
Enhanced mass transfer rates of a novel oscillatory flow screening reactor (2004)
Reis, N., Vicente, A. A., Teixeira, J. A., Mackley, M. R.
A novel continuous small-scale reactor based on the oscillatory flow technology (Harvey et al 2001) is being developed for application to specialist chemical manufacture and high throughput...
Castro, I., Reis, N., Teixeira, J. A., Vicente, A. A.
A pilot ohmic heater was tested for the continuous aseptic processing of strawberry pulp. The fluid mechanics and the fluid residence time distribution (RTD), in the whole volume of the vessel and...
Fluid mixing and particle suspension in a novel microreactor (2003)
Harvey, Adam, Mackley, M. R., Reis, N., Teixeira, J. A., Vicente, A. A.
Horizon Branes and Chiral Strings (2003)
In this thesis I present a new type of brane - H-brane - where the role of time in String Theory is considered as a primary concept in the search for still unknown black hole physics. Using the basic...
The fluid mechanics relating to a novel oscillatory flow micro reactor (2003)
Harvey, Adam, Mackley, M. R., Reis, N., Teixeira, J. A., Vicente, A. A.
Fundação para a Ciência e a Tecnologia (FCT) - scholarship SFRH/BD/6954/2001.
Bacteriuria screening by direct bioluminescence assay of ATP.
Schifman, R B, Wieden, M, Brooker, J, Chery, M, Delduca, M, Norgard, K, ...
A direct bioluminescence assay for bacteriuria screening is described and compared with the MS-2 system (Abbott Laboratories, Irvine, Tex.) and the chemical strip, Gram smear, and calibrated-loop...
Bacteriuria screening by direct bioluminescence assay of ATP.
Schifman, R B, Wieden, M, Brooker, J, Chery, M, Delduca, M, Norgard, K, ...
A direct bioluminescence assay for bacteriuria screening is described and compared with the MS-2 system (Abbott Laboratories, Irvine, Tex.) and the chemical strip, Gram smear, and calibrated-loop...