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CO2 electrolysis to multicarbon products in strong acid
13 Sep 2021University of SydneyLi, FengwangCarbon dioxide electroreduction (CO2R) is being actively studied as a promising route to convert carbon emissions to valuable chemicals and fuels. However, the fraction of input CO2 that is productively reduced has typically been very low, <2% for multicarbon products; the balance reacts with hydroxide to form carbonate in both alkaline and neutral reactors. Acidic electrolytes would overcome thi…
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Could COVID_19 mark a turning point for global action on climate change?
16 Sep 2021University of SydneyPatel, Riya Rameshkumar Dickson, Rebecca Jane LynetteCOVID-19 and climate change are both threats of immense proportions, however, the differing perception of climate change as far-off, projected and unpredictable, persists as a marked barrier to global action. COVID-19 is increasing awareness of the connection between human actions and environmental consequences. The current slowdown of fossil fuel use has given a glimpse of the quitter, cleaner a…
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The association of wildfire air pollution with COVID-19 incidence in New South Wales, Australia
26 Nov 2021University of SydneyCortes-Ramirez, J. Michael, R.N. Knibbs, L.D. Bambrick, H.J. Haswell, M.R. Wraith, D.The 2020 COVID-19 outbreak in New South Wales (NSW), Australia, followed an unprecedented wildfire season that exposed large populations to wildfire smoke. Wildfires release particulate matter (PM), toxic gases and organic and non-organic chemicals that may be associated with increased incidence of COVID-19. This study estimated the association of wildfire smoke exposure with the incidence of COV…
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Fluidization of lactose carrier powders through normally directed airflow: The effect of recirculation and particle size
02 Dec 2021University of SydneyElserfy, K Kourmatzis, A Singh, G Chan, HK Cheng, SThis study investigates the fluidization of lactose carriers from a powder bed subjected to a normal force in a channel flow using high-speed imaging, particle image velocimetry (PIV), and high-speed, long-distance microscopy (HS-LDM). Pharmaceutical lactose carriers (LH200 and SV010) with different cohesiveness and fines percentages were examined in this study. Airflow velocities in the range of…
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Effect of Inflow Conditioning for Dry Powder Inhalers
03 Dec 2021University of SydneySingh, G Lowe, A Azeem, A Cheng, S Chan, HK Walenga, R Kourmatzis, AThe transport of pharmaceutical dry powder inside an optically accessible inhaler-like device is studied using both macro- and microscopic high-speed imaging. The investigation aims to systematically study the effect of inflow modifications on the dispersion characteristics of agglomerates inside a dry powder inhaler (DPI) geometry. An inhaler device was designed with geometrical features akin to…
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Rapid review: Estimates of incremental breast cancer detection from tomosynthesis (3D-mammography) screening in women with dense breasts.
09 Dec 2021University of SydneyHoussami, Nehmat Turner, Robin MHigh breast tissue density increases breast cancer (BC) risk, and the risk of an interval BC in mammography screening. Density-tailored screening has mostly used adjunct imaging to screen women with dense breasts, however, the emergence of tomosynthesis (3D-mammography) provides an opportunity to steer density-tailored screening in new directions potentially obviating the need for adjunct imaging…
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Experimental investigation into turbulent negatively buoyant jets using combined PIV and PLIF measurements
20 Dec 2021University of SydneyMilton-McGurk, Liam Williamson, Nicholas Armfield, Steven Kirkpatrick, MichaelTurbulent negatively buoyant jets occur when the buoyancy of a jet opposes its source momentum. In these flows, the fluid will rise until it reaches a stagnation point and a return flow is established, forming a fountain (Hunt and Burridge, 2015). This study looks at both the initial negatively buoyant jet stage of this flow, before the return flow has established, and the fully developed fountai…
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Movement of IS26-Associated Antibiotic Resistance Genes Occurs via a Translocatable Unit That Includes a Single IS26 and Preferentially Inserts Adjacent to Another IS26
07 Mar 2016University of SydneyHarmer, Christopher J Moran, Robert A Hall, Ruth MTheinsertionsequenceIS26playsakeyroleindisseminatingantibioticresistancegenesinGram-negativebacteria, forming regions containing more than one antibiotic resistance gene that are flanked by and interspersed with copies of IS26. A model presented for a second mode of IS26 movement that explains the structure of these regions involves a translocatable unit consisting of a unique DNA segment carryin…
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p39R861-4, a type 2 A/C2 plasmid carrying a segment from the A/C1 RA1
11 Mar 2016University of SydneyAnantham, S Harmer, Christopher J Hall, Ruth MThe largest plasmid in the strain 39R861, which is used as a plasmid size standard, was recovered by conjugation and sequenced to determine its exact size. Plasmid p39R861-4 transferred at high frequency. Though reported to be the A/C1 plasmid RA1, p39R861-4 is a 155794 bp Type 2 A/C2 plasmid in which a 39 kb segment derived from RA1 that includes a relative of the RA1 resistance island replaces …
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Imaging mass spectrometry of frontal white matter lipid changes in human alcoholics
18 Dec 2018University of Sydneyde la Monte, SM Kay, J Yalcin, EB Kril, JJ Sheedy, D Sutherland, GTBACKGROUND: Chronic alcohol use disorders (AUD) are associated with white matter (WM) degeneration with altered myelin integrity. Matrix assisted laser desorption ionization-imaging mass spectrometry (MALDI-IMS) enables high throughput analysis of myelin lipid biochemical histopathology to help characterize disease mechanisms. PURPOSE: This study utilized MALDI-IMS to investigate frontal lobe WM …