Flow-induced oscillation in flexible tubes: experimental and numerical investigation of mechanism and onset. We seek to understand when instability arises in flow over very deformable structures. This will help us to design highly flexible structures specifically either to avoid the danger of flow-induced oscillations, which may be damaging (cardiac surgery, sails, parachutes), or in other circumstances to take advantage of them as an innovative way involving no sliding-parts mechanisms to crea ....Flow-induced oscillation in flexible tubes: experimental and numerical investigation of mechanism and onset. We seek to understand when instability arises in flow over very deformable structures. This will help us to design highly flexible structures specifically either to avoid the danger of flow-induced oscillations, which may be damaging (cardiac surgery, sails, parachutes), or in other circumstances to take advantage of them as an innovative way involving no sliding-parts mechanisms to create vibration, or flow pulsation, or sound, or motion (as in swimming-pool cleaners). Confidence in designing with highly flexible tubes will allow minimal resource consumption in manufacture of products to transport fluids, and will allow design use of the flow limitation property, whereby such a tube can control flow-rate.Read moreRead less
Developing novel aerosol inhalers for pulmonary drug delivery from the fundamental understanding of powder dispersion mechanisms. The project seeks to understand how powder aerosol inhalers can be significantly improved. The outcome will provide therapeutic benefits to the Australian community for better treatment of respiratory diseases and facilitate environmentally friendly technology since these inhalers do not require any harmful organic solvents to operate.
Multi-drug dry powder inhalation systems for the effective treatment of chronic obstructive pulmonary disease. Utilising a combination of particle engineering, computer modeling, rapid prototyping and high-speed 3D imaging this project will develop a novel approach to treat chronic obstructive pulmonary disease. A multi-drug particle system whose surface is independent of the drugs incorporated will be optimised in a novel high efficiency inhalation device.
Elucidating the post-transcriptional regulation of mast cell proteases. Mast cells (MCs) are immune cells that protect against pathogens but may induce deleterious inflammation. MC function is mediated by specific proteases that are pre-formed and stored in granules. These proteases have unique yet poorly understood mechanisms of regulation. The aim of the project is to use a novel suite of molecular tools and genetically modified mice to identify the critical regions of transcripts that post-tr ....Elucidating the post-transcriptional regulation of mast cell proteases. Mast cells (MCs) are immune cells that protect against pathogens but may induce deleterious inflammation. MC function is mediated by specific proteases that are pre-formed and stored in granules. These proteases have unique yet poorly understood mechanisms of regulation. The aim of the project is to use a novel suite of molecular tools and genetically modified mice to identify the critical regions of transcripts that post-transcriptionally regulate the production and storage of these proteins. The project aims to identify the RNA binding proteins, microRNAs and other novel factors that also regulate them. This is expected to elucidate the post-transcriptional mechanisms of regulation of MC proteases.Read moreRead less
In-vivo detection of airway injury and disease using phase contrast X-ray velocimetry. Currently diagnosis of lung disease, a major cause of death in humans, is based on clinical symptoms that do not usually manifest until the disease is well advanced. This project will develop a novel imaging technique, X-ray velocimetry, to detect changes in tissue before symptoms arise, potentially leading to strategies for managing lung diseases.
Discrete particle simulation of powder dispersion in pharmaceutical aerosol inhalers. A successful completion of the project will i) greatly enhance the Australian R&D profile and capabilities of both computational modelling and pharmaceutical aerosol research in the world; ii) provide an improved delivery of therapeutic dose to patients via inhalers with better performance to enhance the therapeutic benefits; iii) enable wide availability of inexpensive and effective pharmaceutical inhalation p ....Discrete particle simulation of powder dispersion in pharmaceutical aerosol inhalers. A successful completion of the project will i) greatly enhance the Australian R&D profile and capabilities of both computational modelling and pharmaceutical aerosol research in the world; ii) provide an improved delivery of therapeutic dose to patients via inhalers with better performance to enhance the therapeutic benefits; iii) enable wide availability of inexpensive and effective pharmaceutical inhalation products to the Australian community for the treatment of asthma and other diseases, iv) facilitate environmentally friendly technology since powder aerosol delivery does not require any harmful organic solvents to operate.Read moreRead less
Synthesis of nanoparticles by impinging liquid-jet precipitation for inhalation drug delivery. The project aim is to develop a state of the art technology for the efficient, reliable and economical production of nanoparticles of drugs suitable for inhalation delivery to the lung. Nanoparticles can penetrate deeper into the lung where they deposit and dissolve faster for enhanced therapeutic effects. The project will focus on both the production process and the particle properties for aerosol a ....Synthesis of nanoparticles by impinging liquid-jet precipitation for inhalation drug delivery. The project aim is to develop a state of the art technology for the efficient, reliable and economical production of nanoparticles of drugs suitable for inhalation delivery to the lung. Nanoparticles can penetrate deeper into the lung where they deposit and dissolve faster for enhanced therapeutic effects. The project will focus on both the production process and the particle properties for aerosol administration. Successful development of the technology will not only gain new knowledge in the key area of nanotechnology, but also lead to better inhalation therapy to benefit patients.Read moreRead less
Development of a novel process for the formation of particles with controlled surface architecture for respiratory drug delivery. A successful conclusion of this project will enhance substantially the competitiveness of Australia's research in functional nanomaterials and advanced biomaterials. The Australian pharmaceutical industry will gain through the ability to develop proprietary pharmaceutical formulations targeted towards taking advantage of the novel process. Patients of asthma, lung inf ....Development of a novel process for the formation of particles with controlled surface architecture for respiratory drug delivery. A successful conclusion of this project will enhance substantially the competitiveness of Australia's research in functional nanomaterials and advanced biomaterials. The Australian pharmaceutical industry will gain through the ability to develop proprietary pharmaceutical formulations targeted towards taking advantage of the novel process. Patients of asthma, lung infection and other serious health problems will benefit from an improved delivery of therapeutic dose at a much reduced cost. The technology is environmentally friendly as powder aerosol delivery does not require any harmful organic solvent to operate.Read moreRead less
Force Interactions in Packed and Fluidised Beds at Micro-Scale Operation. Industrial processing in the 20th century was about increasing size to gain benefit from economies of scale. This century, the focus is on micro devices like lab-on-a-chip and high speed computer processors that deliver their product directly to the consumer. There are significant obstacles facing this new technology. Mixing is reduced due to laminar flow, and a large amount of energy is needed to move the fluid through su ....Force Interactions in Packed and Fluidised Beds at Micro-Scale Operation. Industrial processing in the 20th century was about increasing size to gain benefit from economies of scale. This century, the focus is on micro devices like lab-on-a-chip and high speed computer processors that deliver their product directly to the consumer. There are significant obstacles facing this new technology. Mixing is reduced due to laminar flow, and a large amount of energy is needed to move the fluid through such small devices. Particles are often added to improve mixing and heat transfer, but their presence adds to the energy requirements. This study will help us overcome these challenges. Read moreRead less
Microdynamic modelling and analysis of gas fluidization of particle mixtures. The project aims to develop a comprehensive understanding of the mechanisms governing the particle-fluid flow in gas fluidization of mixtures of particles of different sizes. This will be achieved through detailed analysis of the particle-particle and particle-fluid interactions on the basis of the microdynamic or particle scale results generated by the newly developed discrete simulation technique. The microscopic fin ....Microdynamic modelling and analysis of gas fluidization of particle mixtures. The project aims to develop a comprehensive understanding of the mechanisms governing the particle-fluid flow in gas fluidization of mixtures of particles of different sizes. This will be achieved through detailed analysis of the particle-particle and particle-fluid interactions on the basis of the microdynamic or particle scale results generated by the newly developed discrete simulation technique. The microscopic findings will be implemented in the macroscopic, continuum-based modelling and tested by comparing numerical and experimental results. It will significantly enhance the present capability of modelling particle-fluid flow in gas fluidization which is widely used in mineral/chemical industries.Read moreRead less