Science and Engineering
This community houses research from the Faculty of Science and Engineering at the University of Waikato.
All items in Research Commons are provided only to permit fair dealing for the purposes of research or private study. They are protected by copyright with all rights reserved unless otherwise indicated.
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The International Global Change Institute (IGCI) [38]
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Antarctic Theses [49]
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TephraNZ: a major- and trace-element reference dataset for glass-shard analyses from prominent Quaternary rhyolitic tephras in New Zealand and implications for correlation
(Copernicus Publications on behalf of the European Geosciences Union, 2021)Although analyses of tephra-derived glass shards have been undertaken in New Zealand for nearly four decades (pioneered by Paul Froggatt), our study is the first to systematically develop a formal, comprehensive, openaccess ... -
Note on random raindrops and sampling error
(IWA Publishing, 1980)A number of variables of interest in precipitation studies can be interpreted as sums of random numbers of random variables, where the summed quantity is a power transformation of raindrop diameter. Included in this category ... -
Prediction of the mechanical properties of isotropic pure metal-based and two-phase alloy-based porous materials using modified analytical models
(Elsevier BV, 2021)This work investigates the applicability and accuracy of the five fundamental analytical models commonly used to estimate the thermophysical properties of porous materials for the prediction of the mechanical behaviour, ... -
Improving the alignment of dynamic sheet-formed mats by changing nozzle geometry and their reinforcement of polypropylene matrix composites
(MDPI AG, 2021)The main objective of this study was to improve the orientation of fibres within the mats produced using dynamic sheet forming (DSF). DSF is used to make fibre mats by forcing a fibre suspension through a nozzle onto a ... -
Direct extrusion 3D printing for a softer PLA-based bio-polymer composite in pellet form
(Elsevier BV, 2021)Fused deposition modelling is the most popular method of 3D printing with a variety of polymers, but the raw materials are commonly in the filament form. Research has demonstrated the ability to use pellets for this process, ... -
AI augmented approach to identify shared ideas from large format public consultation
(MDPI AG, 2021)Public data, contributed by citizens, stakeholders and other potentially affected parties, are becoming increasingly used to collect the shared ideas of a wider community. Having collected large quantities of text data ... -
Decadal shoreline erosion and recovery of beaches in modified and natural estuaries
(Elsevier BV, 2021)Sandy beaches in estuaries and bays (BEBs) are common landforms on the coasts of many major cities. They exist under a wide range of settings and their morphology is controlled by their distance from the estuary/bay entrance, ... -
Evaluating earthquake hazard and risk using liquefied volcanic-ash layers in lakes
(Australasian Quaternary Association (AQUA), 2021)Liquefied volcanic-ash or tephra layers, for which we have coined a new term, ‘tephra seismites’, are preserved in lake sediments in numerous 20,000-year-old lakes in the Hamilton Basin in northern North Island. Up to five ... -
Cellulose nanocrystal treatment of aligned short hemp fibre mats for reinforcement in polypropylene matrix composites
(Springer Science and Business Media LLC, 2021)Oriented short hemp fibre mats were produced using dynamic sheet forming (DSF) incorporating cellulose nanocrystals (CNCs) to improve their integrity. The CNCs were found to act as a binder and improve mechanical strength ... -
Geology of the Maketu Area, Bay of Plenty, North Island, New Zealand. Sheet V14 1:50 000
(Department of Earth and Ocean Sciences, University of Waikato in collaboration with Bay of Plenty Regional Council, Whakatane, 2006)The area covered in this report on the geology of Sheet V14 Maketu 1 :50 000 includes Motiti Island and a small triangular section of the Bay of Plenty coastal lowlands from the Kaituna River mouth to Pukehina Beach within ... -
Effect of stearic acid treatment on the properties of aligned short hemp fibre mats and their potential use as reinforcement in polypropylene matrix composites
(Springer, 2021)The main objective of this study was to assess the effect of stearic acid vapour treatment on hemp fibre mats produced using dynamic sheet forming, and the potential use of these treated mats as reinforcement in polypropylene ... -
Convergence of public participation, participatory design and NLP to co-develop circular economy
(Springer Science and Business Media LLC, 2021)The concept of a circular economy is at a crossroads. To date, it has been largely driven by top-down national or trans-national legislation such as EU Circular Economy Package or Chinese Circular Economy Promotion. Bottom-up ... -
Moisture sensitivity and compressive performance of 3D-printed cellulose-biopolyester foam lattices
(Elsevier, 2021)Biobased, foam-like polyester composite materials were 3D-printed from a thermoset paste formulation. This paste formulation was composed of sebacic acid, glycerol, citric acid, and cellulose nanocrystals in water and ... -
Influence of land-derived stressors and environmental variability on compositional turnover and diversity of estuarine benthic communities
(Inter-Research Science Center, 2021)It can be challenging to differentiate community changes caused by human activities from the influence of natural background variability. Using gradient forest analysis, we explored the relative importance of environmental ... -
Mechanical and rheological properties of 3D printable cement composites
(LIDSEN Publishing Inc, 2020)Additive manufacturing is a recent revolution in the construction field since cementitious materials became printable. This extrusion technique has enabled the construction of very complex geometry with a reduction in ... -
Estimation of the motor threshold for near-rectangular stimuli using the hodgkin-huxley model
(Hindawi LTD, 2021)The motor threshold measurement is a standard in preintervention probing in TMS experiments. We aim to predict the motor threshold for near-rectangular stimuli to efficiently determine the motor threshold size before any ... -
Recycling of waste glass as aggregate in cement-based materials
(Elsevier BV, 2020)Glass is a common material made from natural resources such as sand. Although much of the waste glass is recycled to make new glass products, a large proportion is still being sent to landfill. Glass is a useful resource ... -
Resilience of microbial mats in Antarctic ponds to climate-relevant environmental disturbance
(The University of Waikato, 2021)Continental Antarctica is a cold desert, where the hydrologic system is dependent on melting of snow and ice. In a warming climate it is projected that there will be a significant change in precipitation, evaporation, cloud ... -
An investigation of microbial communities across two extreme geothermal gradients on Mt. Erebus, Victoria Land, Antarctica
(The University of Waikato, 2021)The geothermal fumaroles present on Mt. Erebus, Antarctica, are home to numerous unique and possibly endemic bacteria. The isolated nature of Mt. Erebus provides an opportunity to closely examine how geothermal physico-chemistry ... -
Assessment of dendrocalamus asper (Schult and schult f.) (Poaceae) bamboo treated with tannin-boron preservatives
(Elsevier, 2021)Tannin-boron based preservative solutions were used for the treatment of D. asper bamboo by vacuum/pressure impregnation. Samples treated with tannin/hexamine-based solutions presented low weight losses after decay tests ...
