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Articles 31 - 60 of 156
Full-Text Articles in Social and Behavioral Sciences
Improved Performance Of Porphyrin-Based Dye Sensitised Solar Cells By Phosphinic Acid Surface Treatment, K Sunahara, Alessandra Allegrucci, S Mori, Naomi A. Lewcenko, Leone Spiccia, Attila J. Mozer, Lynn Dennany, Pawel W. Wagner, David L. Officer
Improved Performance Of Porphyrin-Based Dye Sensitised Solar Cells By Phosphinic Acid Surface Treatment, K Sunahara, Alessandra Allegrucci, S Mori, Naomi A. Lewcenko, Leone Spiccia, Attila J. Mozer, Lynn Dennany, Pawel W. Wagner, David L. Officer
Faculty of Science - Papers (Archive)
Chemical surface treatment of porphyrin-sensitised titania films using bis-(4-methoxyphenyl)phosphinic acid after dye adsorption, results in large improvements in DSSC efficiencies which originate primarily from higher short circuit currents. The result was attributed to a positive shift in the TiO2 quasi-Fermi level with simultaneous retardation of charge recombination. High device performances have been achieved even using simplified electrolyte matrices devoid of the common additives, LiI and t-butylpyridine.
Multiresonator-Based Chipless Rfid System For Low-Cost Item Tracking, Stevan Preradovic, Isaac Balbin, Nemai Karmakar, Gerhard F. Swiegers
Multiresonator-Based Chipless Rfid System For Low-Cost Item Tracking, Stevan Preradovic, Isaac Balbin, Nemai Karmakar, Gerhard F. Swiegers
Faculty of Science - Papers (Archive)
A fully passive printable chipless RFID system is presented. The chipless tag uses the amplitude and phase of the spectral signature of a multiresonator circuit and provides I : 1 correspondence of data bits. The tag comprises of a microstrip spiral multiresonator and cross-polarized transmitting and receiving microstrip ultra-wideband disc loaded monopole antennas. The reader antenna is a log periodic dipole antenna with average 5.5-dBi gain. Firstly, a 6-bit chipless tag is designed to encode 000000 and 010101 IDs. Finally, a 35-bit chipless tag based on the same principle is presented. The tag has potentials for low-cost item tagging such …
Relative Importance Of Fuel Management, Ignition Management And Weather For Area Burned: Evidence From Five Landscape-Fire-Succession Models, Geoffrey J. Cary, Mike D. Flannigan, Robert E. Keane, Ross A. Bradstock, Ian D. Davies, James M. Lenihan, Chao Li, Kimberley A. Logan, Russell A. Parsons
Relative Importance Of Fuel Management, Ignition Management And Weather For Area Burned: Evidence From Five Landscape-Fire-Succession Models, Geoffrey J. Cary, Mike D. Flannigan, Robert E. Keane, Ross A. Bradstock, Ian D. Davies, James M. Lenihan, Chao Li, Kimberley A. Logan, Russell A. Parsons
Faculty of Science - Papers (Archive)
The behaviour of five landscape fire models (CAFE, FIRESCAPE, LAMOS(HS), LANDSUM and SEM-LAND) was compared in a standardised modelling experiment. The importance of fuel management approach, fuel management effort, ignition management effort and weather in determining variation in area burned and number of edge pixels burned (a measure of potential impact on assets adjacent to fire-prone landscapes) was quantified for a standardised modelling landscape. Importance was measured as the proportion of variation in area or edge pixels burned explained by each factor and all interactions among them. Weather and ignition management were consistently more important for explaining variation in area …
Prediction Of The Probability Of Large Fires In The Sydney Region Of South-Eastern Australia Using Components Of Fire Weather., R A. Bradstock, J S. Cohn, A M. Gill, M Bedward, C Lucas
Prediction Of The Probability Of Large Fires In The Sydney Region Of South-Eastern Australia Using Components Of Fire Weather., R A. Bradstock, J S. Cohn, A M. Gill, M Bedward, C Lucas
Faculty of Science - Papers (Archive)
The probability of large-fire (>= 1000 ha) ignition days, in the Sydney region, was examined using historical records. Relative influences of the ambient and drought components of the Forest Fire Danger Index (FFDI) on large fire ignition probability were explored using Bayesian logistic regression. The preferred models for two areas (Blue Mountains and Central Coast) were composed of the sum of FFDI (Drought Factor, DF = 1) (ambient component) and DF as predictors. Both drought and ambient weather positively affected the chance of large fire ignitions, with large fires more probable on the Central Coast than in the Blue …
Larval Settlement Preference Of A Native Bivalve: The Influence Of An Invasive Alga Versus Native Substrata, Paul E. Gribben, Jeffrey T. Wright, Wayne A. O'Connor, Peter Steinberg
Larval Settlement Preference Of A Native Bivalve: The Influence Of An Invasive Alga Versus Native Substrata, Paul E. Gribben, Jeffrey T. Wright, Wayne A. O'Connor, Peter Steinberg
Faculty of Science - Papers (Archive)
Recruitment patterns of marine invertebrates are strongly influenced by the habitat preference of larvae as larvae can choose to settle (or not) in response to positive or negative cues. High abundances of recruits of the native infaunal bivalve Anadara trapezia occur in the invasive alga Caulerpa taxifolia compared to native habitats. Using controlled laboratory experiments, A. trapezia larval habitat preference was investigated through exposure to available native (adult A. trapezia, Zostera capricorni and sediment from unvegetated areas) and invasive (C. taxifolia and sediments from C. taxifolia) substrata that co-occur in estuaries invaded by C. taxifolia in New South Wales, Australia. …
The Instrumental Period, Robert Bindschadler, Eberhard Fahrbach, Jim Fastook, Jaume Forcarda, Josep-Maria Gili, Nancy Bertler, D M. Bergstrom, Mauro Gugliemin, Julian Gutt, Hartmut Hellmer, F Hennion, Roberto Bargagli, Carlo Barbante, Karen Heywood, Dominic Hodgson, David Holland, Sungmin Hong, Angus Atkinson, Rob Arthern, Byron Adams, A H.L Huiskes, Steve Chown, Enrique Isla, Stan Jacobs, Anna Jones, David Bromwich, Claude Boutron, Josifino Comiso, Pete Convey, Alison Cook, Guido Di Prisco, James Bockheim, Mark Stevens, Colin Summerhayes, Phil Trathan, John A. Turner, Kees Van Der Veen, David Vaughan, Mike Meredith, Paul Mayewski, Gareth Marshall, Cinzia Verde, Andrew Lenton, Howard Roscoe, Sharon A. Robinson, Steve Rintoul, Hans-Otto Portner, Sergio Rossi, Ted Scambos, Jon Shanklin, Lloyd Peck, Nicholas Metzl, Andrew Monaghan, David Webb, Christian Wiencke, Covadonga Orejas, Philip Woodworth, Tony Worby, Roger Worland, Kevin K. Newsham, Alberto Naveira-Garabato, Takashi Yamanouchi, Victor Smetacek, Kevin Speer
The Instrumental Period, Robert Bindschadler, Eberhard Fahrbach, Jim Fastook, Jaume Forcarda, Josep-Maria Gili, Nancy Bertler, D M. Bergstrom, Mauro Gugliemin, Julian Gutt, Hartmut Hellmer, F Hennion, Roberto Bargagli, Carlo Barbante, Karen Heywood, Dominic Hodgson, David Holland, Sungmin Hong, Angus Atkinson, Rob Arthern, Byron Adams, A H.L Huiskes, Steve Chown, Enrique Isla, Stan Jacobs, Anna Jones, David Bromwich, Claude Boutron, Josifino Comiso, Pete Convey, Alison Cook, Guido Di Prisco, James Bockheim, Mark Stevens, Colin Summerhayes, Phil Trathan, John A. Turner, Kees Van Der Veen, David Vaughan, Mike Meredith, Paul Mayewski, Gareth Marshall, Cinzia Verde, Andrew Lenton, Howard Roscoe, Sharon A. Robinson, Steve Rintoul, Hans-Otto Portner, Sergio Rossi, Ted Scambos, Jon Shanklin, Lloyd Peck, Nicholas Metzl, Andrew Monaghan, David Webb, Christian Wiencke, Covadonga Orejas, Philip Woodworth, Tony Worby, Roger Worland, Kevin K. Newsham, Alberto Naveira-Garabato, Takashi Yamanouchi, Victor Smetacek, Kevin Speer
Faculty of Science - Papers (Archive)
The instrumental period began with the first voyages to the Southern Ocean during the Seventeenth and Eighteenth centuries when scientists such as Edmund Halley made observations of quantities such as geomagnetism. During the early voyages information was collected on the meteorological conditions across the Southern Ocean, ocean conditions, the sea ice extent and the terrestrial and marine biology. The continent itself was discovered in 1820, although the collection of data was sporadic through the remainder of the Nineteenth Century and it was not possible to venture into the inhospitable interior of Antarctica. At the start of the Twentieth Century stations …
Book Reviews: Geographies Of Australian Heritages. Loving A Sunburnt Country? And Surface Collection, Lesley M. Head
Book Reviews: Geographies Of Australian Heritages. Loving A Sunburnt Country? And Surface Collection, Lesley M. Head
Faculty of Science - Papers (Archive)
No abstract provided.
Hindgut Plasticity In Wallabies Fed Hay Either Unchopped Or Ground And Pelleted: Fiber Is Not The Only Factor, Adam J. Munn, Fiona Clissold, Esther Tarszisz, Kathleen Kimpton, Christopher R. Dickman, Ian D. Hume
Hindgut Plasticity In Wallabies Fed Hay Either Unchopped Or Ground And Pelleted: Fiber Is Not The Only Factor, Adam J. Munn, Fiona Clissold, Esther Tarszisz, Kathleen Kimpton, Christopher R. Dickman, Ian D. Hume
Faculty of Science - Papers (Archive)
Phenotypic plasticity of the gastrointestinal tract is crucial for optimal food processing and nutrient balance in many vertebrate species. For mammalian herbivores, gut plasticity is typically correlated with the fiber content of forage; however, we show here that other factors such as ingesta particle size may effect profound phenotypic plasticity of the fermentative hind-gut in a medium-sized (10-kg body mass) marsupial herbivore, the red-necked wallaby (Macropus rufogriseus). When dietary fiber contents were comparable, red-necked wallabies that were fed a finely ground, pelleted hay for 60-72 d had hindguts that were some 28% heavier (empty wet mass) than those fed unchopped …
The Whole Rock Sm-Nd 'Age' For The 2825 Ma Ikkattoq Gneisses (Greenland) Is 800 Ma Too Young: Insights Into Archaean Ttg Petrogenesis, Clark R L Friend, Allen Phillip Nutman, Halfdan Baadsgaard, M John M Duke
The Whole Rock Sm-Nd 'Age' For The 2825 Ma Ikkattoq Gneisses (Greenland) Is 800 Ma Too Young: Insights Into Archaean Ttg Petrogenesis, Clark R L Friend, Allen Phillip Nutman, Halfdan Baadsgaard, M John M Duke
Faculty of Science - Papers (Archive)
The Ikkattoq gneisses of the Archaean gneiss complex in the Nuuk region, southern West Greenland, are the orthogneiss component within the amphibolite facies Tre Brodre terrane. They have mostly granodioritic compositions, with a small amount of quartz diorite. Sm-Nd isotopic data for a quartz diorite and five granodiorite Ikkattoq gneiss samples from within 5 km of the Ikkattoq (fjord) type locality yielded a regression with a slope equivalent to 2005 +/- 52 Ma (MSWD = 0.72). Regardless of the low MSWD, this cannot be the true age of the Ikkattoq gneisses, because all Ikkattoq gneisses yield U-Pb zircon dates of …
The Thioflavin T Fluorescence Assay For Amyloid Fibril Detection Can Be Biased By The Presence Of Exogenous Compounds, Sean A. Hudson, Heath Ecroyd, Tak W. Kee, John A. Carver
The Thioflavin T Fluorescence Assay For Amyloid Fibril Detection Can Be Biased By The Presence Of Exogenous Compounds, Sean A. Hudson, Heath Ecroyd, Tak W. Kee, John A. Carver
Faculty of Science - Papers (Archive)
Thioflavin T (ThT) dye fluorescence is used regularly to quantify the formation and inhibition of amyloid fibrils in the presence of anti-amyloidogenic compounds such as polyphenols. However, in this study, it was shown, using three polyphenolics (curcumin, quercetin and resveratrol), that ThT fluorescence should be used with caution in the presence of such exogenous compounds. The strong absorptive and fluorescent properties of quercetin and curcumin were found to significantly bias the ThT fluorescence readings in both in situ real-time ThT assays and single time-point dilution ThT-type assays. The presence of curcumin at concentrations as low as 0.01 and 1 uM …
Synthesis And Ph-Responsive Properties Of Pseudo-Peptide Containing Hydrophobic Amino Acid Grafts, Rongjun Chen, Mark E. Eccleston, Zhilian Yue, Nighel K. H Slater
Synthesis And Ph-Responsive Properties Of Pseudo-Peptide Containing Hydrophobic Amino Acid Grafts, Rongjun Chen, Mark E. Eccleston, Zhilian Yue, Nighel K. H Slater
Faculty of Science - Papers (Archive)
Pseudo-peptidic polymers have been synthesised by grafting l-valine (PV), l-leucine (PL) and l-phenylalanine (PP) onto the pendant carboxylic acid moieties of a pH-responsive polyamide, poly(l-lysine isophthalamide). The pH-responsive aqueous solution properties of PV-75, PL-75 and PP-75 with a stoichiometric degree of substitution of 75 mol% have been compared with those of the parent poly(l-lysine isophthalamide) using UV-visible and fluorescence spectroscopy. At low concentrations (≤0.1 mg mL-1), the grafted polymers displayed pH-dependent conformation. The pH at the onset of hydrophobic association (pHh) and the pH range over which association occurred varied significantly between the different amino acid grafts. The pHh values …
Long-Term Tropospheric Formaldehyde Concentrations Deduced From Ground-Based Fourier Transform Solar Infrared Measurements, N B. Jones, K Riedel, W Allan, S Wood, P I. Palmer, K Chance, J Notholt
Long-Term Tropospheric Formaldehyde Concentrations Deduced From Ground-Based Fourier Transform Solar Infrared Measurements, N B. Jones, K Riedel, W Allan, S Wood, P I. Palmer, K Chance, J Notholt
Faculty of Science - Papers (Archive)
We report a 13-year (1992–2005) dataset of total column measurements of formaldehyde (HCHO) over Lauder, New Zealand, inferred from solar infrared spectra measured using a high-resolution Fourier Transform Spectrometer (FTS). Ambient HCHO concentrations at this rural location are often close to levels typical of remote marine environments (<250 ppt), which are close to the detection limit using standard techniques. Consequently we develop a new method that successfully produces HCHO columns with sufficient sensitivity throughout the whole season. HCHO columns over Lauder have a strong seasonal cycle (±50%), with a mean column of 4.9×1015 molecules cm−2, peaking during summer months. A simple box model of CH4 oxidation reproduces the observed broad-scale seasonal cycle, but significantly underestimates the seasonal peak HCHO ground concentrations during summer. This suggests the existence of an additional significant source of HCHO, possibly isoprene that cannot be explained by oxidation of CH4 alone. The ground-based FTS column data compare well with collocated HCHO column measurements from the Global Ozone Monitoring Experiment (GOME) satellite instrument during the operational period of GOME (1996–2001, r2=0.65, mean bias=10%, n=48).
Data Report: Clast Counts And Petrography Of Gravels From Site C0007, Iodp Expedition 316, Nankai Trough, Christopher L. Fergusson
Data Report: Clast Counts And Petrography Of Gravels From Site C0007, Iodp Expedition 316, Nankai Trough, Christopher L. Fergusson
Faculty of Science - Papers (Archive)
Gravel beds drilled during Integrated Ocean Drilling Program Expedition 316 at Site C0007 in the eastern Nankai Trough, ~100km offshore from the Kii Peninsula of Honshu, southwest Japan, have been investigated using 26 samples from two horizons (Cores 316-C0007C/C-17H and 316-C0007D-12R). The gravel from Core 316-C0007c-17H is from a 1.7m thick layer, whereas the gravel from Core 316-C0007D-12R is from a layer 4.55m thick. The upper parts of both layers are normally graded. The gravel is clast-supported, polymictic, of granule to pebble size, moderately to poorly sorted, and with subrounded to angular fragments. Clast types are similar from both cores …
Stable Isotope Metabolic Labeling With A Novel 15n-Enriched Bacteria Diet For Improved Proteomic Analyses Of Mouse Models For Psychopathologies, Yinglong Zhang, Elisabeth T. Frank, B. Hambsch, C. W. Turck, M. Bunck, R. Landgraf, M. S. Kessler, G. Maccarrone, M. Filiou, Hermann Heumann, Stefan Reckow
Stable Isotope Metabolic Labeling With A Novel 15n-Enriched Bacteria Diet For Improved Proteomic Analyses Of Mouse Models For Psychopathologies, Yinglong Zhang, Elisabeth T. Frank, B. Hambsch, C. W. Turck, M. Bunck, R. Landgraf, M. S. Kessler, G. Maccarrone, M. Filiou, Hermann Heumann, Stefan Reckow
Faculty of Science - Papers (Archive)
The identification of differentially regulated proteins in animal models of psychiatric diseases is essential for a comprehensive analysis of associated psychopathological processes. Mass spectrometry is the most relevant method for analyzing differences in protein expression of tissue and body fluid proteomes. However, standardization of sample handling and sample-to-sample variability are problematic. Stable isotope metabolic labeling of a proteome represents the gold standard for quantitative mass spectrometry analysis. The simultaneous processing of a mixture of labeled and unlabeled samples allows a sensitive and accurate comparative analysis between the respective proteomes. Here, we describe a cost-effective feeding protocol based on a newly …
Aboriginal Settlement During The Lgm At Brockman, Pilbara Region, Western Australia, Michael Slack, Melanie Fillios, Richard L. Fullagar
Aboriginal Settlement During The Lgm At Brockman, Pilbara Region, Western Australia, Michael Slack, Melanie Fillios, Richard L. Fullagar
Faculty of Science - Papers (Archive)
This paper describes the results and implications of recent excavations on the Hamersley Iron Brockman 4 tenement, near Torn Price, Western Australia. Results concentrate on two rock shelters with Aboriginal occupation starting at least 32,000 years ago and extending throughout the Last Glacial period. Preliminary observations are proposed concerning the nature of Aboriginal foraging patterns as displayed in the flaked stone and faunal records for the Brockman region.
Desiccation Protects Antarctic Mosses From Ultraviolet-B Induced Dna Damage, Johanna Turnbull, Sharon A. Robinson, Simon J. Leslie
Desiccation Protects Antarctic Mosses From Ultraviolet-B Induced Dna Damage, Johanna Turnbull, Sharon A. Robinson, Simon J. Leslie
Faculty of Science - Papers (Archive)
Antarctic mosses live in a frozen desert, and are characterised by the ability to survive desiccation. They can tolerate multiple desiccation-rehydration events over the summer growing season. As a result of recent ozone depletion, such mosses may also be exposed to ultraviolet-B radiation while desiccated. The ultraviolet-B susceptibility of Antarctic moss species was examined in a laboratory experiment that tested whether desiccated or hydrated mosses accumulated more DNA damage under enhanced ultraviolet-B radiation. Accumulation of cyclobutane pyrimidine dimers and pyrimidine (64) pyrimidone dimers was measured in moss samples collected from the field and then exposed to ultraviolet-B radiation in either …
The Small Heat-Shock Proteins Hspb2 And Hspb3 Form Well-Defined Heterooligomers In A Unique 3 To 1 Subunit Ratio, J. Den Engelsman, S. Baros, P. Y. W. Dankers, B. Kamps, W. T. Vree Egberts, C. S. Bode, L. A. Lane, J. A. Aquilina, J. L. P. Benesch, C. V. Robinson, W. W. De Jong, W. C. Boelens
The Small Heat-Shock Proteins Hspb2 And Hspb3 Form Well-Defined Heterooligomers In A Unique 3 To 1 Subunit Ratio, J. Den Engelsman, S. Baros, P. Y. W. Dankers, B. Kamps, W. T. Vree Egberts, C. S. Bode, L. A. Lane, J. A. Aquilina, J. L. P. Benesch, C. V. Robinson, W. W. De Jong, W. C. Boelens
Faculty of Science - Papers (Archive)
Various mammalian small heat-shock proteins (sHSPs) can interact with one another to form large polydisperse assemblies. In muscle cells, HSPB2/MKBP (myotonic dystrophy protein kinase-binding protein) and HSPB3 have been shown to form an independent complex. To date, the biochemical properties of this complex have not been thoroughly characterized. In this study, we show that recombinant HSPB2 and HSPB3 can be successfully purified from E.coli cells co-expressing both proteins. Nanoelectrospray ionization mass spectrometry and sedimentation velocity analytical ultracentrifugation analysis showed that HSPB2/B3 forms a series of well defined hetero-oligomers, consisting of 4, 8, 12, 16, 20 and 24 subunits, each maintaining …
Towards Novel Entangled Carbon Nanotube Composite Electrodes, Gordon G. Wallace, P. Sherrell, J. Chen, A. Minett
Towards Novel Entangled Carbon Nanotube Composite Electrodes, Gordon G. Wallace, P. Sherrell, J. Chen, A. Minett
Faculty of Science - Papers (Archive)
The commercialization of carbon nanotube electrodes is impeded by the lack of bulk processing techniques. One approach to overcome this impediment is the growth of macroscopic CNT composite architectures which do not require any extra processing. Unfortunately the fundamental growth mechanisms of these carbon composites is not currently understood. To probe this mechanism a systematic examination of the effect of certain growth parameters was undertaken. Within this paper we present the promising preliminary findings of this study revealing extremely complex relationships between variables during growth. We also present the performance of the produced architectures as capacitor electrodes and the further …
Testicular Descent, Sperm Maturation And Capacitation. Lessons From Our Most Distant Relatives, The Monotremes, Russell C. Jones, Heath Ecroyd, Jean-Louis Dacheux, Brett Nixon
Testicular Descent, Sperm Maturation And Capacitation. Lessons From Our Most Distant Relatives, The Monotremes, Russell C. Jones, Heath Ecroyd, Jean-Louis Dacheux, Brett Nixon
Faculty of Science - Papers (Archive)
The present review examines whether monotremes may help to resolve three questions relating to sperm production in mammals: why the testes descend into a scrotum in most mammals, why spermatozoa are infertile when they leave the testes and require a period of maturation in the specific milieu provided by the epididymides, and why ejaculated spermatozoa cannot immediately fertilise an ovum until they undergo capacitation within the female reproductive tract. Comparisons of monotremes with other mammals indicate that there is a need for considerable work on monotremes. It is hypothesised that testicular descent should be related to epididymal differentiation. Spermatozoa and …
Model For Amorphous Aggregation Processes, Samual Stranks, Heath Ecroyd, Steve Van Sluyter, Elizabeth J. Waters, John A. Carver, Lorenz Von Smekal
Model For Amorphous Aggregation Processes, Samual Stranks, Heath Ecroyd, Steve Van Sluyter, Elizabeth J. Waters, John A. Carver, Lorenz Von Smekal
Faculty of Science - Papers (Archive)
The amorphous aggregation of proteins is associated with many phenomena, ranging from the formation of protein wine haze to the development of cataract in the eye lens and the precipitation of recombinant proteins during their expression and purification. While much literature exists describing models for linear protein aggregation, such as amyloid fibril formation, there are few reports of models which address amorphous aggregation. Here, we propose a model to describe the amorphous aggregation of proteins which is also more widely applicable to other situations where a similar process occurs, such as in the formation of colloids and nanoclusters. As first …
Online Ozonolysis Methods For The Determination Of Double Bond Position In Unsaturated Lipids, Michael Thomas, Todd W. Mitchell, Stephen J. Blanksby
Online Ozonolysis Methods For The Determination Of Double Bond Position In Unsaturated Lipids, Michael Thomas, Todd W. Mitchell, Stephen J. Blanksby
Faculty of Science - Papers (Archive)
Modern lipidomics relies heavily on mass spectrometry for the structural characterization and quantification of lipids of biological origins. Structural information is gained by tandem mass spectrometry (MS/MS) whereby lipid ions are fragmented to elucidate lipid class, fatty acid chain length, and degree of unsaturation. Unfortunately, however, in most cases double bond position cannot be assigned based on MS/MS data alone and thus significant structural diversity is hidden from such analyses. For this reason, we have developed two online methods for determining double bond position within unsaturated lipids; ozone electrospray ionization mass spectrometry (OzESI-MS) and ozone-induced dissociation (OzID). Both techniques utilize …
Development And Application Of A System For The Analysis Of Atmospheric, Water And Sediment Nitrogen And Carbon, Ann Stavert, Stephen R. Wilson, Dianne F. Jolley
Development And Application Of A System For The Analysis Of Atmospheric, Water And Sediment Nitrogen And Carbon, Ann Stavert, Stephen R. Wilson, Dianne F. Jolley
Faculty of Science - Papers (Archive)
Eutrophication and climate change, key environmental concerns, are both linked to the carbon and nitrogen cycles hence the improved understanding of these cycles is essential. Currently, there is no system that simultaneously measures the fluxes of the three key gas phase products of nitrogen and carbon cycling (CO2, CH4 and N2O) in submerged ecosystems with hourly time resolution. A “Lake-in-a-box” (mesocosm) was developed in the laboratory which allowed the monitoring of key components of the carbon and nitrogen cycles within the air, water and sediments. The approach is automated, simple and time efficient and novel in its ability to examine …
The Effect Of Preparation Conditions And Biopolymer Dispersants On The Properties Of Swnt Buckypapers, Jenny Boge, Luke J. Sweetman, Marc In Het Panhuis, Stephen F. Ralph
The Effect Of Preparation Conditions And Biopolymer Dispersants On The Properties Of Swnt Buckypapers, Jenny Boge, Luke J. Sweetman, Marc In Het Panhuis, Stephen F. Ralph
Faculty of Science - Papers (Archive)
The effect of varying preparation conditions on the properties of buckypapers made using single-walled carbon nanotubes (SWNTs) was systematically investigated. Changing the sonication time, final dispersion volume or membrane filter used to prepare SWNT-Triton X-100 buckypapers all generally had only a small influence on the density, thickness, contact angle and electrical conductivity of the resulting material. More significant changes were noted when the effects of variations in the above preparation conditions on the mechanical properties and surface morphology of SWNT-Triton X-100 buckypapers were investigated. However, the largest changes in properties were found when various biopolymers (bovine serum albumin, lysozyme, gellan …
Retrofitting The Suburban Garden: Morphologies And Some Elements Of Sustainability Potential Of Two Australian Residential Suburbs Compared, Sumita Ghosh, Lesley M. Head
Retrofitting The Suburban Garden: Morphologies And Some Elements Of Sustainability Potential Of Two Australian Residential Suburbs Compared, Sumita Ghosh, Lesley M. Head
Faculty of Science - Papers (Archive)
No abstract provided.
Sulphur-Tagged Metal-Organic Frameworks And Their Post-Synthetic Oxidation, Andrew D. Burrows, Christopher G. Frost, Mary F. Mahon, Christopher Richardson
Sulphur-Tagged Metal-Organic Frameworks And Their Post-Synthetic Oxidation, Andrew D. Burrows, Christopher G. Frost, Mary F. Mahon, Christopher Richardson
Faculty of Science - Papers (Archive)
No abstract provided.
Reconstructing Annual Inflows To The Headwater Catchments Of The Murray River, Australia, Using The Pacific Decadal Oscillation, Hamish A. Mcgowan, Samuel K. Marx, John Denholm, Joshua Soderholm, Balz S. Kamber
Reconstructing Annual Inflows To The Headwater Catchments Of The Murray River, Australia, Using The Pacific Decadal Oscillation, Hamish A. Mcgowan, Samuel K. Marx, John Denholm, Joshua Soderholm, Balz S. Kamber
Faculty of Science - Papers (Archive)
The Pacific Decadal Oscillation (PDO) is a major forcing of inter-decadal to quasi-centennial variability of the hydroclimatology of the Pacific Basin. Its effects are most pronounced in the extra-tropical regions, while it modulates the El Nino Southern Oscillation (ENSO), the largest forcing of global inter-annual climate variability. PalaeoPDO indices are now available for at least the past 500 years. Here we show that the >500 year PDO index of Shen et al. (2006) is highly correlated with inflows to the headwaters of Australia's longest river system, the Murray-Darling. We then use the PDO to reconstruct annual inflows to the Murray …
Archaeobotany In Australia And New Guinea: Practice, Potential And Prospects, Tim Denham, Jennifer M. Atchison, Jeremy Austin, Sheahan Bestel, Doreen Bowdery, Alison Crowther, Nic Dolby, Andrew Fairbairn, Judith Field, Amanda Kennedy, Carol Lentfer, Carney Matheson, Sue Nugent, Jeff Parr, Matiu Prebble, Gail Robertson, Jim Specht, Robin Torrence, Huw Barton, Richard L. Fullagar, Simon Haberle, Mark Horrocks, Tara Lewis, Peter Matthews
Archaeobotany In Australia And New Guinea: Practice, Potential And Prospects, Tim Denham, Jennifer M. Atchison, Jeremy Austin, Sheahan Bestel, Doreen Bowdery, Alison Crowther, Nic Dolby, Andrew Fairbairn, Judith Field, Amanda Kennedy, Carol Lentfer, Carney Matheson, Sue Nugent, Jeff Parr, Matiu Prebble, Gail Robertson, Jim Specht, Robin Torrence, Huw Barton, Richard L. Fullagar, Simon Haberle, Mark Horrocks, Tara Lewis, Peter Matthews
Faculty of Science - Papers (Archive)
Archaeobotany is the study of plant remains from archaeological contexts. Despite Australasian research being at the forefront of several methodological innovations over the last three decades, archaebotany is now a relatively peripheral concern to most archaeological projects in Australia and New Guinea. In this paper, many practicing archaeobotanists working in these regions argue for a more central role for archaeobotany in standard archaeological practice. An overview of archaeobotanical techniques and applications is presented, the potential for archaeobotany to address key historical research questions is indicated, and initiatives designed to promote archaeobotany and improve current practices are outlined.
Differences In Soft-Sediment Macrobenthic Assemblages Invaded By Caulerpa Taxifolia Compared To Uninvaded Habitats, Justin G. Mckinnon, Paul E. Gribben, Andrew R. Davis, Dianne F. Jolley, Jeffrey T. Wright
Differences In Soft-Sediment Macrobenthic Assemblages Invaded By Caulerpa Taxifolia Compared To Uninvaded Habitats, Justin G. Mckinnon, Paul E. Gribben, Andrew R. Davis, Dianne F. Jolley, Jeffrey T. Wright
Faculty of Science - Papers (Archive)
Caulerpa taxifolia is a habitat-forming green alga that has invaded several temperate regions worldwide. Although C. taxifolia covers large areas of soft-sediment habitat, little is known about its effects on soft-sediment invertebrate assemblages. We compared soft-sediment macroinvertebrate assemblages in 2 estuaries in southeastern Australia invaded by C. taxifolia to examine 2 main predictions: (1) areas covered with C. taxifolia will have different assemblages compared to unvegetated sediment because infauna are inhibited but epifauna are facilitated, and (2) areas with C. taxifolia will have different assemblages compared to those with native seagrasses (Halophila ovalis and Zostera capricorni) because infauna are inhibited …
The Effect Of Bacteria On The Sensitivity Of Microalgae To Copper In Laboratory Bioassays, Jacqueline Levy, Jenny L. Stauber, Steven A. Wakelin, Dianne F. Jolley
The Effect Of Bacteria On The Sensitivity Of Microalgae To Copper In Laboratory Bioassays, Jacqueline Levy, Jenny L. Stauber, Steven A. Wakelin, Dianne F. Jolley
Faculty of Science - Papers (Archive)
Although single-species laboratory toxicity tests with microalgae are sensitive and highly reproducible, they lack environmental realism. Interactions between algae and their associated bacteria, either in the plankton or in biofilms, may alter algal sensitivity to contaminants, which are not mimicked in laboratory toxicity tests. This study investigated the effects of simple algal-bacterial relationships on the sensitivity of laboratory-cultured algae to copper using 72-h algal growth-rate inhibition bioassays. Four species of microalgae were used, two isolates of each; a strain of algae with no microscopically visible and no culturable bacteria present (operationally defined as axenic) and a non-axenic strain. The four …
Functional Transition In The Floral Receptacle Of The Sacred Lotus (Nelumbo Nucifera): From Thermogenesis To Photosynthesis, R. E. Miller, J. R. Watling, Sharon A. Robinson
Functional Transition In The Floral Receptacle Of The Sacred Lotus (Nelumbo Nucifera): From Thermogenesis To Photosynthesis, R. E. Miller, J. R. Watling, Sharon A. Robinson
Faculty of Science - Papers (Archive)
The receptacle of the sacred lotus is the main source of heat during the thermogenic stage of floral development. Following anthesis, it enlarges, greens and becomes a fully functional photosynthetic organ. We investigated development of photosynthetic traits during this unusual functional transition. There were two distinct phases of pigment accumulation in receptacles. Lutein and photoprotective xanthophyll cycle pigments accumulated first with 64% and 95% of the maximum, respectively, present prior to anthesis. Lutein epoxide comprised 32% of total carotenoids in yellow receptacles, but declined with development. By contrast, more than 85% of maximum total chlorophyll, β-carotene and Rubisco were produced …