Proceedings of the Institution of Civil Engineers - Construction Materials, 2017
The Australian road network is nearly a million kilometres long, of which 83% can be classified a... more The Australian road network is nearly a million kilometres long, of which 83% can be classified as rural roads. The size and remote nature of Australia's road network pose unique challenges in terms of asset monitoring and maintenance costs. Cement stabilisation is a practice commonly used to improve durability and reduce inspection and repair costs. However, due to the sheer length of the road network, a huge quantity of cement is consumed in stabilisation work, making this practice unsustainable. This paper explores a sustainable alternative through augmentation of the traditional cement-based stabilisation with microbial carbonate precipitation. The calcium carbonate crystals formed within the samples were investigated by scanning electron microscopy and X-ray diffraction. Bulk mechanical properties were characterised through unconfined compressive strength (UCS) testing and the digital image correlation technique was utilised during UCS testing to extract more refined inform...
Microbially Induced Calcium Carbonate Precipitation (MICP) is a natural biocementation that takes... more Microbially Induced Calcium Carbonate Precipitation (MICP) is a natural biocementation that takes place in corals, stromatolites and beach rocks. In recent years, researchers have explored the emulation of this process as a sustainable alternative of engineered cement. Although the natural process is undoubtedly sustainable, its engineered variant deviates substantially from the natural process. In this paper, we investigate the environmental and economic performance of the engineered biocementation process vis-à-vis present manufacturing of calcium carbonate. SimaPro 8.0 software and the Ecoinvent V2.2 database were used for materials inputs and AUSLCI along with Cumulative Energy Demand 2.01 software were used for carbon footprint and eutrophication potential. Our results show that different metabolic pathways of MICP have considerably varying environmental impact. We observe that nature performs MICP sustainably at ambient conditions and geological time scales utilizing naturally...
AimsTo review available standards for physical health monitoring in people taking clozapine To au... more AimsTo review available standards for physical health monitoring in people taking clozapine To audit current practice against standards To identify changes in practice and facilitate a re-audit to assess impact of any changesMethodStandard: CG178 Psychosis and Schizophrenia in Adults: Prevention and Management – NICE, February 2014Target:100%Exceptions: NoneSample: The original audit included all 58 patients from the Worcester clozapine clinic, as per October 2018. The re-audit reviewed a random sample of all patients attending the clozapine clinics in Worcester, Kidderminster and Redditch, as part of Worcestershire Health and Care NHS Trust, as per October 2019. A total of 66 patients were selected.Data Source: Carenotes and ICEResultAreas of good practice:Monitoring of HbA1c and FBC remains goodThere has been an improvement in monitoring alcohol use, substance misuse and side effectsAreas requiring improvement:There continues to be limited recording of respiratory rateThere has be...
Proceedings of the Institution of Civil Engineers - Construction Materials, 2017
The Australian road network is nearly a million kilometres long, of which 83% can be classified a... more The Australian road network is nearly a million kilometres long, of which 83% can be classified as rural roads. The size and remote nature of Australia's road network pose unique challenges in terms of asset monitoring and maintenance costs. Cement stabilisation is a practice commonly used to improve durability and reduce inspection and repair costs. However, due to the sheer length of the road network, a huge quantity of cement is consumed in stabilisation work, making this practice unsustainable. This paper explores a sustainable alternative through augmentation of the traditional cement-based stabilisation with microbial carbonate precipitation. The calcium carbonate crystals formed within the samples were investigated by scanning electron microscopy and X-ray diffraction. Bulk mechanical properties were characterised through unconfined compressive strength (UCS) testing and the digital image correlation technique was utilised during UCS testing to extract more refined inform...
Microbially Induced Calcium Carbonate Precipitation (MICP) is a natural biocementation that takes... more Microbially Induced Calcium Carbonate Precipitation (MICP) is a natural biocementation that takes place in corals, stromatolites and beach rocks. In recent years, researchers have explored the emulation of this process as a sustainable alternative of engineered cement. Although the natural process is undoubtedly sustainable, its engineered variant deviates substantially from the natural process. In this paper, we investigate the environmental and economic performance of the engineered biocementation process vis-à-vis present manufacturing of calcium carbonate. SimaPro 8.0 software and the Ecoinvent V2.2 database were used for materials inputs and AUSLCI along with Cumulative Energy Demand 2.01 software were used for carbon footprint and eutrophication potential. Our results show that different metabolic pathways of MICP have considerably varying environmental impact. We observe that nature performs MICP sustainably at ambient conditions and geological time scales utilizing naturally...
AimsTo review available standards for physical health monitoring in people taking clozapine To au... more AimsTo review available standards for physical health monitoring in people taking clozapine To audit current practice against standards To identify changes in practice and facilitate a re-audit to assess impact of any changesMethodStandard: CG178 Psychosis and Schizophrenia in Adults: Prevention and Management – NICE, February 2014Target:100%Exceptions: NoneSample: The original audit included all 58 patients from the Worcester clozapine clinic, as per October 2018. The re-audit reviewed a random sample of all patients attending the clozapine clinics in Worcester, Kidderminster and Redditch, as part of Worcestershire Health and Care NHS Trust, as per October 2019. A total of 66 patients were selected.Data Source: Carenotes and ICEResultAreas of good practice:Monitoring of HbA1c and FBC remains goodThere has been an improvement in monitoring alcohol use, substance misuse and side effectsAreas requiring improvement:There continues to be limited recording of respiratory rateThere has be...
Uploads
Papers by Hannah Porter