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Articles 2341 - 2370 of 13308

Full-Text Articles in Social and Behavioral Sciences

A Method Of Providing Engaging Formative Feedback To Large Cohort First-Year Physiology And Anatomy Students, Katrina Weston-Green, Margaret Christina Wallace Jan 2016

A Method Of Providing Engaging Formative Feedback To Large Cohort First-Year Physiology And Anatomy Students, Katrina Weston-Green, Margaret Christina Wallace

Faculty of Science, Medicine and Health - Papers: part A

A growing body of evidence demonstrates a critical role for effective, meaningful feedback to enhance student learning. Effective feedback can become part of the learning cycle that is not only a learning opportunity for the student but can also be used to inform the teacher and ongoing curriculum development. Feedback is considered particularly important during the first year of university and can even be viewed as a retention strategy that can help attenuate student performance anxieties and solidify perceptions of academic support. Unfortunately, the provision of individualized, timely feedback can be particularly challenging in first-year courses as they tend to ...


Re-Identification Of An Exotic Bee Introduced To The Hunter Valley Region, New South Wales -Seladonia Hotoni (Vachal, 1903) (Hymenoptera: Halictidae), Michael Batley, Alain Pauly, John R. Gollan, Michael B. Ashcroft, Gontran Sonet Jan 2016

Re-Identification Of An Exotic Bee Introduced To The Hunter Valley Region, New South Wales -Seladonia Hotoni (Vachal, 1903) (Hymenoptera: Halictidae), Michael Batley, Alain Pauly, John R. Gollan, Michael B. Ashcroft, Gontran Sonet

Faculty of Science, Medicine and Health - Papers: part A

In 2004 and 2006, well-established populations of an exotic halictine bee were found in the Upper Hunter Valley region of New South Wales, Australia. On the basis of morphology, the species was identified as Halictus (Seladonia) smaragdulus Vachal, 1895 by an expert familiar with that genus. Subsequently, it was discovered that there are six species in the S. smaragdula complex, but none of the six had the same mitochondrial DNA barcode as the species found in Australia. The introduced bee has been shown to be conspecific with an African species by mitochondrial COI DNA sequences and identified as Seladonia hotoni ...


Hcooh Distributions From Iasi For 2008-2014: Comparison With Ground-Based Ftir Measurements And A Global Chemistry-Transport Model, Matthieu Pommier, Cathy Clerbaux, P F. Coheur, Emmanuel Mahieu, Jean François Muller, Clare Paton-Walsh, Trissevgeni Stavrakou, C Vigouroux Jan 2016

Hcooh Distributions From Iasi For 2008-2014: Comparison With Ground-Based Ftir Measurements And A Global Chemistry-Transport Model, Matthieu Pommier, Cathy Clerbaux, P F. Coheur, Emmanuel Mahieu, Jean François Muller, Clare Paton-Walsh, Trissevgeni Stavrakou, C Vigouroux

Faculty of Science, Medicine and Health - Papers: part A

Formic acid (HCOOH) is one of the most abundant volatile organic compounds in the atmosphere. It is a major contributor to rain acidity in remote areas. There are, however, large uncertainties on the sources and sinks of HCOOH and therefore HCOOH is misrepresented by global chemistry-transport models. This work presents global distributions from 2008 to 2014 as derived from the measurements of the Infrared Atmospheric Sounding Interferometer (IASI), based on conversion factors between brightness temperature differences and representative retrieved total columns over seven regions: Northern Africa, southern Africa, Amazonia, Atlantic, Australia, Pacific, and Russia. The dependence of the measured HCOOH ...


Pzp And Pai-2: Structurally-Diverse, Functionally Similar Pregnancy Proteins?, Amy R. Wyatt, Jordan H. Cater, Marie Ranson Jan 2016

Pzp And Pai-2: Structurally-Diverse, Functionally Similar Pregnancy Proteins?, Amy R. Wyatt, Jordan H. Cater, Marie Ranson

Faculty of Science, Medicine and Health - Papers: part A

Pregnancy zone protein (PZP) and plasminogen activator inhibitor type 2 (PAI-2) are two multifunctional proteins that are elevated in normal pregnancy and numerous other inflammatory states. Both proteins were originally identified as protease inhibitors, but current evidence supports the notion that they may also function as modulators of T-helper cells and/or extracellular chaperones. Exacerbated inflammation, fibrinolytic disturbances and misfolded proteins are all implicated in the pathology of preeclampsia, a leading cause of maternal and foetal mortality and morbidity. Notably, reduced levels of PZP or PAI-2 are associated with preeclampsia and clarification of their diverse functions in normal pregnancy could ...


Development Of An At-Risk Assessment Approach To Dietary Data Quality In A Food-Based Clinical Trial, Vivienne Guan, Yasmine Probst, Elizabeth Neale, Allison Martin, Linda C. Tapsell Jan 2016

Development Of An At-Risk Assessment Approach To Dietary Data Quality In A Food-Based Clinical Trial, Vivienne Guan, Yasmine Probst, Elizabeth Neale, Allison Martin, Linda C. Tapsell

Faculty of Science, Medicine and Health - Papers: part A

Accurate and valid dietary data is the basis to investigate diet-disease relationships. Potential data discrepancies may be introduced when collecting and analysing data, despite rigorous quality assurance protocols. The aim of this study was to identify at-risk areas of dietary data in a food-based clinical trial. Source data verification was performed on a 10% random sample (n=38) of paper-based baseline diet history interview records in a registered clinical trial. All items listed in the source data underwent 100% manual verification based on the food input data from FoodWorks nutrient analysis software. Food item discrepancies were explored using food categories ...


Analysing Health Professionals' Learning Interactions In An Online Social Network: A Longitudinal Study, Xin Li, Karin Verspoor, Kathleen Gray, Stephen Barnett Jan 2016

Analysing Health Professionals' Learning Interactions In An Online Social Network: A Longitudinal Study, Xin Li, Karin Verspoor, Kathleen Gray, Stephen Barnett

Faculty of Science, Medicine and Health - Papers: part A

This paper summarises a longitudinal analysis of learning interactions occurring over three years among health professionals in an online social network. The study employs the techniques of Social Network Analysis (SNA) and statistical modeling to identify the changes in patterns of interaction over time and test associated structural network effects. SNA results indicate overall low participation in the network, although some participants became active over time and even led discussions. In particular, the analysis has shown that a change of lead contributor results in a change in learning interaction and network structure. The analysis of structural network effects demonstrates that ...


Connecting Care In The Community: What Works And What Doesn't, Elizabeth Lucas, Elizabeth J. Halcomb, Sandra K. Mccarthy Jan 2016

Connecting Care In The Community: What Works And What Doesn't, Elizabeth Lucas, Elizabeth J. Halcomb, Sandra K. Mccarthy

Faculty of Science, Medicine and Health - Papers: part A

As the burden of chronic and complex disease grows, there is an emphasis on programs that enhance the quality of care within primary care. The Connecting Care in the Community (CCC) program is an example of the implementation of care integration. This qualitative study sought to explore the experiences general practice staff face in managing clients with chronic and complex care issues, and their perceptions of the contribution of the CCC program to this care. Seventeen general practice staff from 11 practices throughout the Illawarra/Shoalhaven region participated in semistructured interviews. Five main themes emerged: (1) awareness of the CCC ...


Transitioning From Acute To Primary Health Care Nursing: An Integrative Review Of The Literature, Christine Ashley, Elizabeth J. Halcomb, Angela M. Brown Jan 2016

Transitioning From Acute To Primary Health Care Nursing: An Integrative Review Of The Literature, Christine Ashley, Elizabeth J. Halcomb, Angela M. Brown

Faculty of Science, Medicine and Health - Papers: part A

Aims and objectives This paper seeks to explore the transition experiences of acute care nurses entering employment in primary health care settings. Background Internationally the provision of care in primary health care settings is increasing. Nurses are moving from acute care settings to meet the growing demand for a primary health care workforce. While there is significant research relating to new graduate transition experiences, little is known about the transition experience from acute care into primary health care employment. Design An integrative review, guided by Whittemore and Knafl's (2005) approach, was undertaken. Following a systematic literature search eight studies ...


Socioeconomic Disadvantage And Its Implications For Population Health Planning Of Obesity And Overweight, Using Cross-Sectional Data From General Practices From A Regional Catchment In Australia, Abhijeet Ghosh, Karen E. Charlton, Marijka Batterham Jan 2016

Socioeconomic Disadvantage And Its Implications For Population Health Planning Of Obesity And Overweight, Using Cross-Sectional Data From General Practices From A Regional Catchment In Australia, Abhijeet Ghosh, Karen E. Charlton, Marijka Batterham

Faculty of Science, Medicine and Health - Papers: part A

Objectives To identify smaller geographic and region-specific evidence to inform population health planning for overweight and obesity. Design Cross-sectional secondary analysis of data. Setting Primary healthcare-17 general practices located in the Illawarra-Shoalhaven region of New South Wales (NSW). Participants A subset (n=36 674) of the Sentinel Practices Data Sourcing project adult persons data set (n=118 794) that included information on disease status of all adult patients who had height and weight measurements recorded in their electronic health records and had visited the included general practices within the Illawarra-Shoalhaven region of NSW between September 2011 and September 2013. Main ...


'Living Here Will Make You Fat' - Do We Need A Public Health Warning?, Karen E. Charlton, Abhijeet Ghosh Jan 2016

'Living Here Will Make You Fat' - Do We Need A Public Health Warning?, Karen E. Charlton, Abhijeet Ghosh

Faculty of Science, Medicine and Health - Papers: part A

Governments have invested billions in efforts to prevent obesity, yet Australians keep getting fatter, especially in areas of socioeconomic disadvantage.


Moss Δ13c: Implications For Subantarctic Palaeohydrological Reconstructions, Jessica Bramley-Alves, Wolfgang Wanek, Sharon A. Robinson Jan 2016

Moss Δ13c: Implications For Subantarctic Palaeohydrological Reconstructions, Jessica Bramley-Alves, Wolfgang Wanek, Sharon A. Robinson

Faculty of Science, Medicine and Health - Papers: part A

Southern Ocean Islands, despite their equitable oceanic climates, have recently experienced a number of pronounced climate variations. Shifts in water availability in this region are of concern; however, methods of measuring water availability are currently inadequate. Recent advances using stable carbon isotopes (δ13C) in Antarctic mosses to record long-term variations in water availability suggest that this technique might be applicable in other locations where conditions are cold enough to produce meaningful moss growth for reconstructions. Verification of this technique at each new location is essential, however, due to disparity between species and climates. Here, variations in δ13CBULK with growth water ...


Effect Of Molecular Chaperones On Aberrant Protein Oligomers In Vitro: Super-Versus Sub-Stoichiometric Chaperone Concentrations, Sara Cappelli, Amanda Penco, Benedetta Mannini, Roberta Cascella, Mark R. Wilson, Heath Ecroyd, Xinyi Li, Joel N. Buxbaum, Christopher M. Dobson, Cristina Cecchi, Annalisa Relini, Fabrizio Chiti Jan 2016

Effect Of Molecular Chaperones On Aberrant Protein Oligomers In Vitro: Super-Versus Sub-Stoichiometric Chaperone Concentrations, Sara Cappelli, Amanda Penco, Benedetta Mannini, Roberta Cascella, Mark R. Wilson, Heath Ecroyd, Xinyi Li, Joel N. Buxbaum, Christopher M. Dobson, Cristina Cecchi, Annalisa Relini, Fabrizio Chiti

Faculty of Science, Medicine and Health - Papers: part A

Living systems protect themselves from aberrant proteins by a network of chaperones. We have tested in vitro the effects of different concentrations, ranging from 0 to 16 μm, of two molecular chaperones, namely αB-crystallin and clusterin, and an engineered monomeric variant of transthyretin (M-TTR), on the morphology and cytotoxicity of preformed toxic oligomers of HypF-N, which represent a useful model of misfolded protein aggregates. Using atomic force microscopy imaging and static light scattering analysis, all were found to bind HypF-N oligomers and increase the size of the aggregates, to an extent that correlates with chaperone concentration. SDS-PAGE profiles have shown ...


'While We Can, We Will': Exploring Food Choice And Dietary Behaviour Amongst Independent Older Australians, Alison Host, Anne T. Mcmahon, Karen L. Walton, Karen E. Charlton Jan 2016

'While We Can, We Will': Exploring Food Choice And Dietary Behaviour Amongst Independent Older Australians, Alison Host, Anne T. Mcmahon, Karen L. Walton, Karen E. Charlton

Faculty of Science, Medicine and Health - Papers: part A

Aim Burgeoning proportions of populations aged over 65 years impose an increased financial burden upon governments for the provision of associated health and aged-care services. Strategies are therefore required to mitigate service demand through the preservation of good health and independence into old age. Nutrition has been acknowledged as a key factor for realisation of this goal. The objective of the present study was to investigate factors responsible for shaping food shopping, cooking and eating behaviours amongst healthy, independently living Australians aged 60 years and over. Methods Eighteen (5 male, 13 female) independently living residents sourced from three low-care Illawarra ...


Proto-Pacific-Margin Source For The Ordovician Turbidite Submarine Fan, Lachlan Orogen, Southeast Australia: Geochemical Constraints, R Offler, Chris L. Fergusson Jan 2016

Proto-Pacific-Margin Source For The Ordovician Turbidite Submarine Fan, Lachlan Orogen, Southeast Australia: Geochemical Constraints, R Offler, Chris L. Fergusson

Faculty of Science, Medicine and Health - Papers: part A

The Early Palaeozoic proto-Pacific Pacific margin of Gondwana was characterised by a huge turbidite submarine fan with abundant clastic detritus derived from unknown sources within Gondwana. These deposits are widespread in the Lachlan Orogen of southeast Australia and include the Ordovician Adaminaby Group. Here we show that the mudstones and sandstones of the Adaminaby Group have chemical compositions that indicate the detritus in them was derived from a felsic, continental source similar in composition to Post Archean Australian Shales (PAAS). Chondrite normalised REE patterns showing LREE enrichment, flat PAAS normalised patterns and elemental ratios La/Sc, Cr/Th, Cr/V ...


Applying Knowledge Translation Concepts And Strategies In Dementia Care Education For Health Professionals: Recommendations From A Narrative Literature Review, Lyn Phillipson, Belinda J. Goodenough, Samantha L. Reis, Richard Fleming Jan 2016

Applying Knowledge Translation Concepts And Strategies In Dementia Care Education For Health Professionals: Recommendations From A Narrative Literature Review, Lyn Phillipson, Belinda J. Goodenough, Samantha L. Reis, Richard Fleming

Faculty of Science, Medicine and Health - Papers: part A

Introduction: Dementia education programs are being developed for health professionals, but with limited guidance about "what works" in design and content to promote best practice in dementia care. Knowledge translation (KT) is a conceptual framework for putting evidence to work in health care. This narrative literature review examined the question: What does the field KT offer, conceptually and practically, for education of health professionals in dementia care? It seeks to identify the types of strategies currently used within education to facilitate effective KT for the wide range of health professionals who may be involved in the care of people with ...


The Value Of Health Promotion Programs For Older People With Chronic Conditions In The Community, Rebekkah Middleton, Lorna Moxham, Dominique R. Parrish Jan 2016

The Value Of Health Promotion Programs For Older People With Chronic Conditions In The Community, Rebekkah Middleton, Lorna Moxham, Dominique R. Parrish

Faculty of Science, Medicine and Health - Papers: part A

The Ottawa Charter of Health Promotion (WHO,1996) advocates that health promotion occurs when people are able to improve and practice more successful control over their health. The concept of health promotion was founded on the notion of community action, raising awareness and instilling community accountability and involvement in one's own actions.


Ageing And The Cost Of Maintaining Coloration In The Australian Painted Dragon, Mathieu Giraudeau, Christopher R. Friesen, Joanna Sudyka, Nicky Rollings, Camilla M. Whittington, Mark R. Wilson, Mats M. Olsson Jan 2016

Ageing And The Cost Of Maintaining Coloration In The Australian Painted Dragon, Mathieu Giraudeau, Christopher R. Friesen, Joanna Sudyka, Nicky Rollings, Camilla M. Whittington, Mark R. Wilson, Mats M. Olsson

Faculty of Science, Medicine and Health - Papers: part A

There is now good evidence in several taxa that animal coloration positively reflects an individual's antioxidant capacity. However, even though telomeres, a marker of ageing, are known to be vulnerable to reactive oxygen species (ROS) attacks, no studies have ever assessed whether colour fading reflects the rate of biological ageing in any taxa. Here, we measured colour fading, telomere erosion (a measure of biological ageing) and ROS levels in painted dragons. We show that individuals that were better at maintaining their coloration during the three months of the study suffered a higher cost in terms of telomere erosion, but ...


Kinetic Isotope Effects Of 12Ch3D + Oh And 13Ch3D + Oh From 278 To 313k, L M. T Joelsson, J A. Schmidt, E J. K Nilsson, T Blunier, David W. T Griffith, S Ono, Matthew S. Johnson Jan 2016

Kinetic Isotope Effects Of 12Ch3D + Oh And 13Ch3D + Oh From 278 To 313k, L M. T Joelsson, J A. Schmidt, E J. K Nilsson, T Blunier, David W. T Griffith, S Ono, Matthew S. Johnson

Faculty of Science, Medicine and Health - Papers: part A

Methane is the second most important long-lived greenhouse gas and plays a central role in the chemistry of the Earth's atmosphere. Nonetheless there are significant uncertainties in its source budget. Analysis of the isotopic composition of atmospheric methane, including the doubly substituted species 13CH3D, offers new insight into the methane budget as the sources and sinks have distinct isotopic signatures. The most important sink of atmospheric methane is oxidation by OH in the troposphere, which accounts for around 84% of all methane removal. Here we present experimentally derived methane+OH kinetic isotope effects and their temperature dependence over the ...


Chronic Administration Of Aripiprazole Activates Gsk3Β-Dependent Signalling Pathways, And Up-Regulates GabaA Receptor Expression And Creb1 Activity In Rats, Bo Pan, Xu-Feng Huang, Chao Deng Jan 2016

Chronic Administration Of Aripiprazole Activates Gsk3Β-Dependent Signalling Pathways, And Up-Regulates GabaA Receptor Expression And Creb1 Activity In Rats, Bo Pan, Xu-Feng Huang, Chao Deng

Faculty of Science, Medicine and Health - Papers: part A

Aripiprazole is a D2-like receptor (D2R) partial agonist with a favourable clinical profile. Previous investigations indicated that acute and short-term administration of aripiprazole had effects on PKA activity, GSK3β-dependent pathways, GABAA receptors, NMDA receptor and CREB1 in the brain. Since antipsychotics are used chronically in clinics, the present study investigated the long-term effects of chronic oral aripiprazole treatment on these cellular signalling pathways, in comparison with haloperidol (a D2R antagonist) and bifeprunox (a potent D2R partial agonist). We found that the Akt-GSK3β pathway was activated by aripiprazole and bifeprunox in the prefrontal cortex; NMDA NR2A levels were reduced by aripiprazole ...


Protein Aggregates Stimulate Macropinocytosis Facilitating Their Propagation, Justin J. Yerbury Jan 2016

Protein Aggregates Stimulate Macropinocytosis Facilitating Their Propagation, Justin J. Yerbury

Faculty of Science, Medicine and Health - Papers: part A

Temporal and spatial patterns of pathological changes such as loss of neurons and presence of pathological protein aggregates are characteristic of neurodegenerative diseases such as Amyotrophic Lateral Sclerosis, Frontotemporal Dementia, Alzheimer's disease and Parkinson's disease. These patterns are consistent with the propagation of protein misfolding and aggregation reminiscent of the prion diseases. There is a surge of evidence that suggests that large protein aggregates of a range of proteins are able to enter cells via macropinocytosis. Our recent work suggests that this process is activated by the binding of aggregates to the neuron cell surface. The current review ...


Large-Scale, Dynamic Transformations In Fuel Moisture Drive Wildfire Activity Across Southeastern Australia, Rachael H. Nolan, Mathias M. Boer, Victor Resco De Dios, Gabriele Caccamo, Ross A. Bradstock Jan 2016

Large-Scale, Dynamic Transformations In Fuel Moisture Drive Wildfire Activity Across Southeastern Australia, Rachael H. Nolan, Mathias M. Boer, Victor Resco De Dios, Gabriele Caccamo, Ross A. Bradstock

Faculty of Science, Medicine and Health - Papers: part A

The occurrence of large, high-intensity wildfires requires plant biomass, or fuel, that is sufficiently dry to burn. This poses the question, what is "sufficiently dry"? Until recently, the ability to address this question has been constrained by the spatiotemporal scale of available methods to monitor the moisture contents of both dead and live fuels. Here we take advantage of recent developments in macroscale monitoring of fuel moisture through a combination of remote sensing and climatic modeling. We show there are clear thresholds of fuel moisture content associated with the occurrence of wildfires in forests and woodlands. Furthermore, we show that ...


Incorporating Benthic Community Changes Into Hydrochemical-Based Projections Of Coral Reef Calcium Carbonate Production Under Ocean Acidification, Emily C. Shaw, Sarah Hamylton, Stuart R. Phinn Jan 2016

Incorporating Benthic Community Changes Into Hydrochemical-Based Projections Of Coral Reef Calcium Carbonate Production Under Ocean Acidification, Emily C. Shaw, Sarah Hamylton, Stuart R. Phinn

Faculty of Science, Medicine and Health - Papers: part A

The existence of coral reefs is dependent on the production and maintenance of calcium carbonate (CaCO3) framework that is produced through calcification. The net production of CaCO3 will likely decline in the future, from both declining net calcification rates (decreasing calcification and increasing dissolution) and shifts in benthic community composition from calcifying organisms to non-calcifying organisms. Here, we present a framework for hydrochemical studies that allows both declining net calcification rates and changes in benthic community composition to be incorporated into projections of coral reef CaCO3 production. The framework involves upscaling net calcification rates for each benthic community type using ...


Mechanisms Of Influenza Viral Membrane Fusion, Jelle S. Blijleven, Sander Boonstra, Patrick Onck, Erik Van Der Giessen, Antoine M. Van Oijen Jan 2016

Mechanisms Of Influenza Viral Membrane Fusion, Jelle S. Blijleven, Sander Boonstra, Patrick Onck, Erik Van Der Giessen, Antoine M. Van Oijen

Faculty of Science, Medicine and Health - Papers: part A

Influenza viral particles are enveloped by a lipid bilayer. A major step in infection is fusion of the viral and host cellular membranes, a process with large kinetic barriers. Influenza membrane fusion is catalyzed by hemagglutinin (HA), a class I viral fusion protein activated by low pH. The exact nature of the HA conformational changes that deliver the energy required for fusion remains poorly understood. This review summarizes our current knowledge of HA structure and dynamics, describes recent single-particle experiments and modeling studies, and discusses their role in understanding how multiple HAs mediate fusion. These approaches provide a mechanistic picture ...


Environmental Values And Fire Hazard Of Eucalypt Plantings, Meaghan Jenkins, Luke Collins, Owen F. Price, Trent D. Penman, Philip J. Zylstra, Bronwyn L. Horsey, Ross A. Bradstock Jan 2016

Environmental Values And Fire Hazard Of Eucalypt Plantings, Meaghan Jenkins, Luke Collins, Owen F. Price, Trent D. Penman, Philip J. Zylstra, Bronwyn L. Horsey, Ross A. Bradstock

Faculty of Science, Medicine and Health - Papers: part A

The revegetation of cleared landscapes with woody plants (termed "environmental planting") has the potential to sequester carbon (C), provide habitat, and increase biodiversity and connectivity. These environmental values are potentially offset by an increased fire hazard posed by revegetation. There is a need to understand the influence environmental planting has on landscape fire behavior and to determine how this changes as plantings age. This study examined how environmental values, regenerative capacity, fuel metrics, and potential fire behavior change with time since planting. We assessed 57 sites across the Albury-Wodonga region (New South Wales, Australia). This included a range of environmental ...


Unglaciated Areas In East Antarctica During The Last Glacial (Marine Isotope Stage 3) - New Evidence From Rauer Group, Sonja Berg, Duanne A. White, Ole Bennike, Reka H. Fulop, David Fink, Bernd Wagner, Martin Melles Jan 2016

Unglaciated Areas In East Antarctica During The Last Glacial (Marine Isotope Stage 3) - New Evidence From Rauer Group, Sonja Berg, Duanne A. White, Ole Bennike, Reka H. Fulop, David Fink, Bernd Wagner, Martin Melles

Faculty of Science, Medicine and Health - Papers: part A

Limited information on the East Antarctic Ice Sheet (EAIS) geometry during Marine Isotope Stage 3 (MIS 3; 60-25 ka) restricts our understanding of its behaviour during periods of climate and sea level change. Ice sheet models forced by global parameters suggest an expanded EAIS compared to the Holocene during MIS 3, but field evidence from East Antarctic coastal areas contradicts such modelling, and suggests that the ice sheet margins were no more advanced than at present. Here we present a new lake sediment record, and cosmogenic exposure results from bedrock, which confirm that Rauer Group (eastern Prydz Bay) was ice-free ...


Localised Magmatic Constraints On Continental Back-Arc Volcanism In Southern Mendoza, Argentina: The Santa Maria Volcano, Venera Espanon, Allan Chivas, Simon P. Turner, Leslie Kinsley, Anthony Dosseto Jan 2016

Localised Magmatic Constraints On Continental Back-Arc Volcanism In Southern Mendoza, Argentina: The Santa Maria Volcano, Venera Espanon, Allan Chivas, Simon P. Turner, Leslie Kinsley, Anthony Dosseto

Faculty of Science, Medicine and Health - Papers: part A

The Payún Matrú Volcanic Field constitutes part of the continental back-arc in Argentina. This volcanic field has been the focus of several regional investigations; however, geochemical analysis of recent volcanoes (<8 >ka) at the scale of an individual volcano has not been conducted. We present a morphological description for the Santa Maria Volcano in addition to results from major and trace element analysis and 238U-230Th-226Ra disequilibria. The trace element evidence suggests that the Santa Maria magmatic source has a composition similar to that of the local intraplate end member (resembling an ocean island basalt-like source), with a slight contribution from subduction-related ...


The Time Scale Of River Sediment Source-To-Sink Processes In East Asia, Chao Li, Shouye Yang, J -X Zhao, Anthony Dosseto, Lei Bi, Tara Clark Jan 2016

The Time Scale Of River Sediment Source-To-Sink Processes In East Asia, Chao Li, Shouye Yang, J -X Zhao, Anthony Dosseto, Lei Bi, Tara Clark

Faculty of Science, Medicine and Health - Papers: part A

Knowledge of river sediment recycling provides important constraints on continent weathering and earth surface processes. In this study, we estimate the ¿comminution age¿ of sediments from the Changjiang (Yangtze River) and two small mountainous rivers in Taiwan based on their lithogenic (234U/238U) ratio. The (234U/238U) distributions in the Changjiang catchment are overall related to sediment grain size and chemical weathering regime, while (234U/238U) ratios in Taiwan rivers mainly depend on erosion/denudation processes. The comminution age constrains the time scale of sediment source-to-sink processes in catchments from sediment weathering/denudation to transportation, and finally deposition. Our results ...


Please, Donald Trump, Don't Send Climate Science Back To The Pre-Satellite Era, Helen V. Mcgregor, Jenny A. Fisher Jan 2016

Please, Donald Trump, Don't Send Climate Science Back To The Pre-Satellite Era, Helen V. Mcgregor, Jenny A. Fisher

Faculty of Science, Medicine and Health - Papers: part A

Bob Walker, an adviser to US President-elect Donald Trump, has set alarm bells ringing by recommending that NASA's climate monitoring programs be axed. But his dismissal of the "politicised science" at NASA's Earth Science Division shows an ignorance of the breadth, role and significance of its contributions to society in the United States and worldwide.


High Temperature Postsynthetic Rearrangement Of Dimethylthiocarbamate-Functionalized Metal-Organic Frameworks, Timothy Ablott, Marc Turzer, Shane Telfer, Christopher Richardson Jan 2016

High Temperature Postsynthetic Rearrangement Of Dimethylthiocarbamate-Functionalized Metal-Organic Frameworks, Timothy Ablott, Marc Turzer, Shane Telfer, Christopher Richardson

Faculty of Science, Medicine and Health - Papers: part A

A thermally promoted postsynthetic rearrangement has been performed on a zinc IRMOF-9-type framework bearing dimethylthiocarbamate tag groups. The rearrangement was accomplished via conventional heating at 285 °C. Crucially, despite the high temperature, the MOF maintains its high accessible surface area and pore space following thermal treatment. The structures and physical properties of the frameworks were characterized by a combination of single-crystal X-ray diffraction, powder X-ray diffraction, differential thermal-thermogravimetric analysis, and gas sorption analysis. The rearrangement results in a slightly higher level of CO2 adsorption for the modified MOF but with equivalent heat of adsorption. This work offers new perspectives ...


Exaggerations And Caveats In Press Releases And Health-Related Science News, Petroc Sumner, Solveiga Vivian Griffiths, Jacky Boivin, Andrew Williams, Lewis Bott, Rachel Adams, Christos Venetis, Leanne Whelan, Bethan Hughes, Christopher D. Chambers Jan 2016

Exaggerations And Caveats In Press Releases And Health-Related Science News, Petroc Sumner, Solveiga Vivian Griffiths, Jacky Boivin, Andrew Williams, Lewis Bott, Rachel Adams, Christos Venetis, Leanne Whelan, Bethan Hughes, Christopher D. Chambers

Faculty of Science, Medicine and Health - Papers: part A

Background: Exaggerated or simplistic news is often blamed for adversely influencing public health. However, recent findings suggested many exaggerations were already present in university press releases, which scientists approve. Surprisingly, these exaggerations were not associated with more news coverage. Here we test whether these two controversial results also arise in press releases from prominent science and medical journals. We then investigate the influence of mitigating caveats in press releases, to test assumptions that caveats harm news interest or are ignored.

Methods and Findings Using: quantitative content analysis, we analyzed press releases (N = 534) on biomedical and health-related science issued by ...