ORCID Profile
0000-0003-3114-3138
Current Organisations
EMM Consulting Pty Ltd
,
James Cook University
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Publisher: Elsevier BV
Date: 10-2018
Publisher: Elsevier BV
Date: 09-2019
Publisher: Elsevier BV
Date: 09-2019
DOI: 10.1016/J.SCITOTENV.2019.04.385
Abstract: Due to the development of the economy, electronic waste (e-waste) has become a new global problem and e-waste dismantling processes are an important source of air pollution. Among the pollutants emitted, polycyclic aromatic hydrocarbons (PAHs) are a severe concern because of their carcinogenic and mutagenic properties. However, few studies have investigated the atmospheric PAHs generated by e-waste dismantling in a specific region, especially the PAH levels throughout the year. Thus, we assessed the effects of PAHs on the local air quality by s ling the total suspended particulates (TSP), PM
Publisher: SAGE Publications
Date: 22-06-2017
Publisher: Elsevier BV
Date: 05-2019
Publisher: Elsevier BV
Date: 10-2015
Publisher: Cambridge University Press (CUP)
Date: 18-01-2019
DOI: 10.1017/RDC.2018.129
Abstract: Accurately dating when people first colonized new areas is vital for understanding the pace of past cultural and environmental changes, including questions of mobility, human impacts and human responses to climate change. Establishing effective chronologies of these events requires the synthesis of multiple radiocarbon ( 14 C) dates. Various “chronometric hygiene” protocols have been used to refine 14 C dating of island colonization, but they can discard up to 95% of available 14 C dates leaving very small datasets for further analysis. Despite their foundation in sound theory, without independent tests we cannot know if these protocols are apt, too strict or too lax. In Iceland, an ice core-dated tephrochronology of the archaeology of first settlement enables us to evaluate the accuracy of 14 C chronologies. This approach demonstrated that the inclusion of a wider range of 14 C s les in Bayesian models improves the precision, but does not affect the model outcome. Therefore, based on our assessments, we advocate a new protocol that works with a much wider range of s les and where outlying 14 C dates are systematically disqualified using Bayesian Outlier Models . We show that this approach can produce robust termini ante quos for colonization events and may be usefully applied elsewhere.
Publisher: Springer Science and Business Media LLC
Date: 06-2022
DOI: 10.1007/S10963-022-09168-W
Abstract: Analysis of the spatial and temporal structure of global island colonization allows us to frame the extent of insular human cultural ersity, model the impact of common environmental factors cross-culturally, and understand the contribution of island maritime societies to big historical processes. No such analysis has, however, been undertaken since the 1980s. In this paper we review and update global patterns in island colonization, synthesizing data from all the major island groups and theaters and undertaking quantitative and qualitative analysis of these data. We demonstrate the continued relevance of certain biogeographic and environmental factors in structuring how humans colonized islands during the Holocene. Our analysis also suggests the importance of other factors, some previously anticipated—such as culturally ingrained seafaring traditions and technological enhancement of dispersal capacity—but some not, such as the relationship between demographic growth and connectivity, differing trophic limitations impinging on colonizing farmers versus hunter-gatherer-foragers, and the constraining effects of latitude. We also connect colonization with continental dynamics: both the horizontal transmission of farming lifestyles earlier in the Holocene, and subsequent centrifugal processes associated with early state formation later in the Holocene.
Publisher: Past Global Changes (PAGES)
Date: 10-2023
Publisher: Cambridge University Press (CUP)
Date: 31-10-2023
DOI: 10.1017/RDC.2023.95
Publisher: Elsevier BV
Date: 05-2019
DOI: 10.1016/J.JHAZMAT.2019.02.029
Abstract: Waste electrical and electronic equipment (E-waste) recycling provides post-consumption economic opportunities, can also exert stress on environment and human health. This study investigated emissions, compositional profiles, and health risks associated with polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) at five workshops (electric blowers to treat mobile phones (EBMP), electric heating furnaces to treat televisions (EHFTV) and routers (EHFR), and rotatory incinerators to treat televisions (RITV) and hard disks (RIHD)) within an e-waste dismantling industrial park. Total suspended particulate (TSP), PBDE, and PCB concentrations were 490-1530 μg m
Publisher: Proceedings of the National Academy of Sciences
Date: 07-11-2022
Abstract: Understanding the role of climate change, resource availability, and population growth in human mobility remains critically important in anthropology. Researching linkages between climate and demographic changes during the short settlement history of Aotearoa (New Zealand) requires temporal precision equivalent to the period of a single generation. However, current modeling approaches frequently use small terrestrial radiocarbon datasets, a practice that obscures past Māori population patterns and their connection to changing climate. Our systematic analysis of terrestrial and marine 14 C ages has enabled robust assessments of the largest dataset yet collated from island contexts. This analysis has been made possible by the recent development of a temporal marine correction for southern Pacific waters, and our findings show the shortcomings of previous models. We demonstrate that human settlement in the mid to late 13th century AD is unambiguous. We highlight initial (AD 1250 to 1275) settlement in the North Island. The South Island was reached a decade later (AD 1280 to 1295), where the hunting of giant flightless moa commenced (AD 1300 to 1415), and the population grew rapidly. Population growth leveled off around AD 1340 and declined between AD 1380 and 1420, synchronous with the onset of the Little Ice Age and moa loss as an essential food source. The population continued to grow in the more economically stable north, where conditions for horticulture were optimal. The enhanced precision of this research afforded by the robust analysis of marine dates opens up unique opportunities to investigate interconnectivity in Polynesia and inform the patterns seen in other island contexts.
Publisher: Springer Science and Business Media LLC
Date: 12-02-2019
DOI: 10.1007/S00203-019-01622-2
Abstract: Bisphenol A (BPA) is a synthetic chemical with known deleterious effects on biota. A genome sequencing project is an important starting point for designing a suitable BPA bioremediation process, because it provides valuable genomic information about the physiological, metabolic, and genetic potential of the microbes used for the treatment. This study explored genomic insights provided by the BPA-degrading strain Bacillus sp. GZB, previously isolated from electronic-waste-dismantling site. The GZB genome is a circular chromosome, comprised of a total of 4,077,007 bp with G+C content comprising 46.2%. Genome contained 23 contigs encoded by 3881 protein-coding genes with nine rRNA and 53 tRNA genes. A comparative study demonstrated that strain GZB bloomed with some potential features as compared to other Bacillus species. In addition, strain GZB developed spore cells and displayed laccase activity while growing at elevated stress levels. Most importantly, strain GZB contained many protein-coding genes associated with BPA degradation, as well as the degradation of several other compounds. The protein-coding genes in the genome revealed the genetic mechanisms associated with the BPA degradation by strain GZB. This study predicts four possible degradation pathways for BPA, contributing to the possible use of strain GZB to remediate different polluted environments in the future.
Publisher: Elsevier BV
Date: 08-2019
DOI: 10.1016/J.ENVINT.2019.05.020
Abstract: The ubiquitous presence of fragrance-associated synthetic musk is cause for serious concern due to their transformation and environmental impacts. In particular, nitro-musks are frequently detected in various matrices, including water, even though they were restricted because of carcinogenicity. Thus, using musk xylene as a model compound, the mechanism, eco-toxicity and health effects during OH-initiated transformation process were systematically studied using quantum chemistry and computational toxicology. Results indicate that musk xylene can be exclusively transformed via H-abstraction pathways from its methyl group, with total rate constants of 5.65 × 10
Publisher: Elsevier BV
Date: 06-2019
DOI: 10.1016/J.WATRES.2019.03.071
Abstract: The development of cost-effective water disinfection methods is highly desired to address the problems caused by outbreak of harmful microorganisms. Sulfate radical (•SO
Publisher: Springer Science and Business Media LLC
Date: 31-08-2020
DOI: 10.1038/S41598-020-70227-3
Abstract: Precise and accurate radiocarbon chronologies are essential to achieve tight chronological control for the ~ 750-years since Polynesian settlement of New Zealand. This goal has, however, been elusive. While radiocarbon datasets in the region are typically dominated by marine and estuarine shell dates, such chronological information has been ignored by those interpreting the timing of key events because a detailed regional calibration methodology for marine shell, comparable to the highly precise Southern Hemisphere calibration curve, is lacking. In this paper, we present the first temporal 14 C marine offset (Δ R ) model for New Zealand based on paired estuarine/marine and terrestrial radiocarbon dates from 52 archaeological contexts. Our dataset displays significant offsets between the measured New Zealand data and the modelled global marine radiocarbon curve. These shifts are associated with oceanographic fluctuation at the onset of the Little Ice Age ~ AD 1350–1450 (650–500 BP). The application of a regional and temporal correction to archaeological shell dates provides complimentary information to terrestrial radiocarbon production and has the potential to add structure to the blurred chronology that has plagued archaeological theories about the colonization of New Zealand, and other Pacific islands, for decades.
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 08-2019
Start Date: 2022
End Date: 2022
Funder: ARC Centre of Excellence for Australian Biodiversity and Heritage
View Funded ActivityStart Date: 2009
End Date: 2009
Funder: German Academic Exchange Service
View Funded ActivityStart Date: 2007
End Date: 2009
Funder: Erasmus+
View Funded ActivityStart Date: 2022
End Date: 2014
Funder: ARC Centre of Excellence for Australian Biodiversity and Heritage
View Funded ActivityStart Date: 2012
End Date: 2015
Funder: Icelandic Centre for Research
View Funded ActivityStart Date: 2022
End Date: 2025
Funder: Marsden Fund
View Funded Activity