Science Collected Works - Research Publications

Permanent URI for this collection

Search Results

Now showing 1 - 10 of 279
  • Item
    Thumbnail Image
    Converging Currents: Memories of Migration, Diplomacy and the Gathering Winds of Ngukurr
    Curkpatrick, S ; Wilfred, D ; Peters, AL ; Haley, K (Simon Normand, 2022)
  • Item
    Thumbnail Image
    Who is Country? A Hermeneutic Strategy Toward Philosophical Responsiveness in Australia
    Curkpatrick, S ; Pawu, WJ ; Bacaller, S (Open Humanities Press, 2023)
    Within Australian society, the term ‘Country’ is used to acknowledge prior and ongoing Indigenous Australian connections to specific lands, waters, and skies, challenging any supposed neutrality of public, cultural, or institutional spaces. However, use of the term ‘Country’ might also slide into unreflective abstraction when disconnected from the nourishing interactions of particular people and places that the term in its fullness can embody. In this paper, we seek to dispel conjectural mists that can surround the notion of ‘Country’ in popular societal use by attending to various relational dynamics which configure and substantiate its meaning. Engaging with Warlpiri (Aboriginal Australian) epistemology and the pedagogic strategies of Warlpiri scholar and co-author, Wanta Jampijinpa Pawu, we propose the seemingly odd question, who is country? as a hermeneutic strategy—an approach which embraces a grounded ontology that ‘lowercases’ meaning as essentially relational and figured within shared identities. We indicate similar tonalities in the contextual hermeneutics of prominent Indigenous Australian theologians, who challenge latent abstractions of theism lurking within pronouncements of meaning as disembodied from real contexts of people and place.
  • Item
    No Preview Available
    Sperm Syringe: 3D Sorting Platform for Assisted Reproduction (Adv. Mater. Technol. 9/2022)
    Yazdan Parast, F ; O'Bryan, MK ; Nosrati, R (Wiley, 2022-09)
    In article number 2101291, Reza Nosrati and co-workers develop a scalable 3D sorting platform for one-step semen purification and high-quality sperm selection. The Sperm Syringe selects sperm with over 65% improvement in both DNA integrity and morphology, considerably outperforming the current best clinical practices for sperm selection in assisted reproduction.
  • Item
    Thumbnail Image
    Alteration of chlorite coats and sandstone porosity reduction: Insights from reactive transport modeling
    Li, H ; Hu, Q ; Wang, F ; Wang, M ; Hao, Y ; Wang, W (Elsevier BV, 2024-02)
    Chlorite coats are widely recognized as a key element in preserving sandstone porosity because it can inhibit the growth of quartz cements. However, the alteration of chlorite coats and its potential influences on sandstone porosity are rarely discussed. Therefore, this work used reactive transport models under different petrographic and geochemical conditions to investigate the influence of chlorite coats on sandstone porosity in a major dissolution window (100 °C). The HCO3-rich (CO2-charged) and HCO3-depleted (organic acids-charged) waters were injected to induce mineral dissolution and precipitation. The results indicate that the alteration of chlorite coats may result in sandstone porosity reduction. The HCO3-rich water leads to a porosity decrease mainly through the precipitation of magnesite and siderite resulting from chlorite dissolution. In contrast, the HCO3-depleted water causes a porosity decrease mainly through the redistribution of kaolinite and quartz cements. Factors, including pCO2, organic acid concentration, coat coverage, coat thickness, and grain size, have secondary influences on net porosity change. In comparison, factors, including chlorite mineralogy, detrital lithology, and the reduction of K-feldspar dissolution rate caused by chlorite coat, have negligible influences. The alteration of chlorite coats may introduce significant mis-interpretation to the analysis of the relationship between chlorite coats and sedimentary facies. Moreover, the actual impact of pore-filling chlorite on porosity reduction may be either underestimated or overestimated. Therefore, the alteration of chlorite coats should be taken into consideration in future studies.
  • Item
    No Preview Available
    Balancing-sequencing paced assembly lines: a multi-objective mixed-integer linear case study
    Lopes, TC ; Michels, AS ; Brauner, N ; Magatao, L (TAYLOR & FRANCIS LTD, 2023-09-02)
  • Item
    No Preview Available
    An exact method to incorporate ergonomic risks in Assembly Line Balancing Problems
    Possan Junior, MC ; Michels, AS ; Magatao, L (PERGAMON-ELSEVIER SCIENCE LTD, 2023-09)
  • Item
    Thumbnail Image
    Morphodynamics of an erodible channel under varying discharge
    Adams, DL (WILEY, 2021-09-30)
    Abstract Alluvial channels arise through the interaction between morphology, hydraulics, and sediment transport, known as the ‘fluvial trinity’. Over relatively short timescales where climate and geology are fixed but discharge and sediment supply may vary, this process facilitates adjustments towards steady state, where the system oscillates around a mean condition. The relationship between changes in conditions and geomorphic response may be highly complex and nonlinear, especially in systems with multiple modes of adjustment. This study examines the adjustment of an erodible channel with fixed banks and a widely graded sediment mixture to successive increases in discharge. With each increase in discharge, components of the fluvial trinity adjusted towards a steady state. Particularly at relatively low discharges, adjustments were controlled by intrinsic thresholds and highlighted important morphodynamic processes. Notably, there was a strong interplay between channel morphology and sediment transport, and an effect whereby larger‐than‐average grains controlled channel deformation. These two processes occurred at the bar scale and were highly spatialised, which has two important implications: (1) reach‐averaged representations of process provide only partial insight into morphodynamics; and (2) models of rivers that suppress these process feedbacks and size‐dependent transport may not replicate morphodynamics that typically occur in field conditions. The experiments provide quantitative evidence for conceptual models describing exponential approaches towards steady state and the potential for transiency if disturbance frequency exceeds the recovery time. They also highlight how in natural rivers, particularly those with greater degrees of freedom for adjustment (notably, lateral adjustment and meandering), continuous changes in discharge may lead to nonlinear rather than steady‐state behaviour. In these settings, more holistic analytical frameworks that embrace different aspects of the system are critical in understanding the direction, magnitude and timing of channel adjustments.
  • Item
    Thumbnail Image
    Movement and ranging behaviour of long-nosed potoroos (Potorous tridactylus) in south-west Victoria, Australia
    Le Pla, M ; Hradsky, BA ; Di Stefano, J ; Farley-Lehmer, TC ; Birnbaum, EK ; Pascoe, JH ; Carthey, A (CSIRO Publishing, 2023)
    Context. A comprehensive understanding of movements and space use can underpin the effective management of threatened species. GPS dataloggers can collect large amounts of high-quality movement data, and recent advances in statistical approaches allow for robust estimates of home range size to be generated. Until recently, technological and practical constraints have generally restricted the collection of movement data via GPS dataloggers to larger species. However, reductions in the size and weight of GPS dataloggers now allow for this technology to be applied to smaller species. Aims. The aim of this study was to describe the home range and movement patterns of a nationally vulnerable, native Australian ground-dwelling mammal, the long-nosed potoroo (Potorous tridactylus), in south-west Victoria, mainland Australia. Methods. We attached GPS dataloggers to 40 long-nosed potoroos between 2020 and 2022 and estimated home range size using dynamic Brownian Bridge movement models. We evaluated the influence of physiological factors such as body mass and sex on home range size and described patterns of home range overlap between and within sexes. Key results. Mean home range sizes were estimated to be 13.73 ha (95% CI: 10.9–16.6) and 6.67 ha (95% CI: 5.49–7.85) for males and females respectively. Home range size scaled with body mass in males but not females, and ranges were largely overlapping – although there was some evidence of intrasexual spatial partitioning of core range areas in females. Conclusions. Ours is the first application of GPS dataloggers to this species, and our home range estimates are over twice as large as other reported estimates for mainland Australia. Long-nosed potoroos may range across larger areas than previously predicted on mainland Australia. Implications. This knowledge may be used to optimise the management of long-nosed potoroo populations before and after fire – a key threatening process for this species. Our study highlights the value of integrating GPS dataloggers and robust home range estimators when describing the movement ecology of a population.
  • Item
    Thumbnail Image
    Surficial sediment data along the shoreface and inner continental shelf of western Victoria, Australia
    Carvalho, RC ; Kennedy, D ; Ierodiaconou, D (ELSEVIER, 2022-12)
    A comprehensive dataset of 138 surficial sediment samples retrieved from the shallow marine waters of six secondary compartments off the western coast of Victoria, Australia, is presented. Samples were collected between October 2018 and November 2020 at water depths ranging from four to 55 m using Shipek and Van Veen grabs. Sampling design targeted unconsolidated areas of the seafloor based on bathymetric and seafloor habitat data. Retrieved sediments were subsampled and subject to grain size analysis using a combination of dry sieving and laser diffraction methods, carbonate and organic matter content determination via Loss-on-Ignition, colour description using a Munsell chart, and roundness analysis using microscopic photography. This dataset, the most comprehensive surficial shallow water sedimentary record of the Otway Shelf, serves as a benchmark to understand sediment dynamics and conectivity along the coast, and can be used in environmental and engineering studies to support a range of management decisions.
  • Item