Open Access. Powered by Scholars. Published by Universities.®
Social and Behavioral Sciences Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- CMMB (49)
- GeoQUEST (31)
- Australia (13)
- Carbon (10)
- Amyloid (7)
-
- Measurements (7)
- Australian (6)
- Detection (5)
- Effects (5)
- Formation (5)
- Late (5)
- Materials (5)
- Nanotube (5)
- Quaternary (5)
- Solar (5)
- Studies (5)
- Study (5)
- Total (5)
- 1 (4)
- Age (4)
- Associated (4)
- Cells (4)
- Change (4)
- Climate (4)
- Column (4)
- Conducting (4)
- Crystallin (4)
- Distribution (4)
- Evidence (4)
- Fibril (4)
Articles 1 - 30 of 191
Full-Text Articles in Social and Behavioral Sciences
Ecological System Meets 'Digital Ecosystem': Can Ict Benefit From Understanding Biology?, Robert J. Whelan
Ecological System Meets 'Digital Ecosystem': Can Ict Benefit From Understanding Biology?, Robert J. Whelan
Faculty of Science - Papers (Archive)
The description of a digital ecosystem as a “loosely coupled, demand-driven, domain clustered, agent-based, self organised, collaborative environment where agents form temporary coalitions for a specific purpose or goal, and each is proactive and responsive for its own benefit” has intriguing similarities with the definition of an ecosystem in ecology. Perhaps the similarities suggest that a deeper understanding of ecology may benefit the further development of ICT, and any differences may therefore represent cautionary tales. In this presentation, I describe characteristics of some ecological systems at several levels-from species to ecosystem-and speculate on the potential of these examples to catalyse …
Late Quaternary Morphodynamics In The Quebrada De Purmamarca, Nw Argentina, Jan-Hendrik May, Ramiro Daniel Soler
Late Quaternary Morphodynamics In The Quebrada De Purmamarca, Nw Argentina, Jan-Hendrik May, Ramiro Daniel Soler
Faculty of Science - Papers (Archive)
This study aims to document the geomorphic, sedimentary and paleopedogenic archives in the Quebrada de Purmamarca. The paleoenvironmental interpretation of these archives and the reconstruction of landscape evolution are mainly based on field observations and geomorphological mapping (May 2008). A series of aggradational terraces mostly consisting of coarse debris-flow deposits are the main focus of this investigation. While the associated cut-and-fill processes are probably the result of an interplay between climatic and tectonic controls, the deposition of the youngest terrace level (> 150 m thickness) may likely be attributed to a drop of the periglacial belt of more than 1000 …
An Australian Feeling For Snow Towards Understanding Cultural And Emotional Dimensions Of Climate Change, Andrew W. Gorman-Murray
An Australian Feeling For Snow Towards Understanding Cultural And Emotional Dimensions Of Climate Change, Andrew W. Gorman-Murray
Faculty of Science - Papers (Archive)
In Australia, snow is associated with alpine and subalpine regions in rural areas; snow is a component of ‘natural’ rather than urban environments. But the range, depth and duration of Australia’s regional snow cover is imperilled by climate change. While researchers have considered the impacts of snow retreat on the natural environment and responses from the mainland ski industry, this paper explores associated cultural and emotional dimensions of climate change. This responds to calls to account for local meanings of climate, and thus localised perceptions of and responses to climate change. Accordingly, this paper presents a case study of reactions …
Introduction - Doing Rural Cultural Studies, Clifton Evers, Andrew W. Gorman-Murray, Emily Potter
Introduction - Doing Rural Cultural Studies, Clifton Evers, Andrew W. Gorman-Murray, Emily Potter
Faculty of Science - Papers (Archive)
In 2008, a themed section of Australian Humanities Review began the task of establishing the emerging field of ‘Rural Cultural Studies’. As the editors pointed out, ‘contemporary cultural studies researchers internationally and in Australia have been massively biased towards urban popular cultures’.
'The Falling Sky': Symbolic And Cosmological Associations Of The Mt William Greenstone Axe Quarry, Central Victoria, Australia, Adam R. Brumm
'The Falling Sky': Symbolic And Cosmological Associations Of The Mt William Greenstone Axe Quarry, Central Victoria, Australia, Adam R. Brumm
Faculty of Science - Papers (Archive)
This article examines the roles of socio-symbolic practices and cosmological beliefs in the production and exchange of stone artefacts in an ethnohistorically documented context in Australia. Isabel McBryde's petrological and ethnohistorical analysis of greenstone axe distribution patterns in central Victoria provides a key example of social factors overriding technological concerns in the production and exchange of lithic artefacts. Her research shows that greenstone axes from Mt William quarry were distributed further than axes from equivalent sources. This suggests that Mt William stone axes had symbolic values that cannot be appreciated from straightforward economic perspectives - the aim of this article …
Elastic Conducting Carbon Nanotube-Laden Sibs Fibers, Alberto J. Granero, Joselito M. Razal, Gordon G. Wallace, Marc In Het Panhuis
Elastic Conducting Carbon Nanotube-Laden Sibs Fibers, Alberto J. Granero, Joselito M. Razal, Gordon G. Wallace, Marc In Het Panhuis
Faculty of Science - Papers (Archive)
We report a facile method to produce elastic conducting fibers using a continuous flow wet-spinning approach. The spun fibers were highly stretchable, similar to the elastomeric polymer used.
Impact Of Ocean Warming And Ocean Acidification On Larval Development And Calcification In The Sea Urchin Tripneustes Gratilla, Hannah Sheppard Brennand, Natalie Soars, Symon A. Dworjanyn, Andrew R. Davis, Maria Byrne
Impact Of Ocean Warming And Ocean Acidification On Larval Development And Calcification In The Sea Urchin Tripneustes Gratilla, Hannah Sheppard Brennand, Natalie Soars, Symon A. Dworjanyn, Andrew R. Davis, Maria Byrne
Faculty of Science - Papers (Archive)
Background: As the oceans simultaneously warm, acidify and increase in P-CO2, prospects for marine biota are of concern. Calcifying species may find it difficult to produce their skeleton because ocean acidification decreases calcium carbonate saturation and accompanying hypercapnia suppresses metabolism. However, this may be buffered by enhanced growth and metabolism due to warming.Methodology/Principal Findings: We examined the interactive effects of near-future ocean warming and increased acidification/P-CO2 on larval development in the tropical sea urchin Tripneustes gratilla. Larvae were reared in multifactorial experiments in flow-through conditions in all combinations of three temperature and three pH/P-CO2 treatments. Experiments were placed in the …
6 Ghz Microstrip Patch Antennas With Pedot And Polypyrrole Conducting Polymers, Akhilesh Verma, Bo Weng, Roderick L. Shepherd, Christophe Fumeaux, Van Tan Truong, Gordon G. Wallace, Bevan D. Bates
6 Ghz Microstrip Patch Antennas With Pedot And Polypyrrole Conducting Polymers, Akhilesh Verma, Bo Weng, Roderick L. Shepherd, Christophe Fumeaux, Van Tan Truong, Gordon G. Wallace, Bevan D. Bates
Faculty of Science - Papers (Archive)
Two 6 GHz microstrip patch antennas made from conducting polymers with relatively low DC conductivity such as PEDOT (10000 S/m) and PPy (2000 S/m) are presented. The performance of these patch antennas is compared with a similar copper patch antenna. The results indicate that it is possible to obtain reasonable performance albeit with modest radiation efficiencies. The PEDOT antenna achieved a maximum gain of 2.2 dB, while the PPy antenna reached a gain of 3.8 dB, as against 6.0 dB for a corresponding Cu patch antenna The results confirm the potential of polymer materials for microwave antennas and suggest that …
Extrusion Printing Conducting Gel-Carbon Nanotube Structures Upon Flexible Substrates, Geoffrey Pidcock, Marc In Het Panhuis
Extrusion Printing Conducting Gel-Carbon Nanotube Structures Upon Flexible Substrates, Geoffrey Pidcock, Marc In Het Panhuis
Faculty of Science - Papers (Archive)
Extrusion printing was investigatedas a wet-processing method forfabrication of robust, flexible conductingstructures. Layer resistance values of 7 -8 kO/cm were obtained for one printedlayer on flexible substrates. Increasingthe number of extrusion printed layer significantlyimproved resistance.
Assessing The Vulnerability Of Asian Megadeltas To Climate Change Using Gis, Colin D. Woodroffe
Assessing The Vulnerability Of Asian Megadeltas To Climate Change Using Gis, Colin D. Woodroffe
Faculty of Science - Papers (Archive)
Susceptibility of Asian megadeltas to climate change, including sea-level rise, is investigated using GIS. The Indus, Ganges-Brahmaputra-Meghna, Irrawaddy, Chao Phraya, Mekong, Red, Pearl, Changjiang, and Huanghe deltas began to form around 6000 years ago and have prograded since. The surface topography of active and abandoned delta plains is examined using digital terrain models derived from Shuttle Radar Topography Mission data and channel morphology is investigated using radar imagery. After delta plains are abandoned they become increasingly dominated by tidal processes. Population density is estimated using gridded world population data but highly variable local microtopography and uncertainty regarding future climate changes …
Identification Of Human Plasma Proteins As Major Clients For The Extracellular Chaperone Clusterin, Amy R. Wyatt, Mark R. Wilson
Identification Of Human Plasma Proteins As Major Clients For The Extracellular Chaperone Clusterin, Amy R. Wyatt, Mark R. Wilson
Faculty of Science - Papers (Archive)
Clusterin (CLU) is an extracellular chaperone that is likely to play an important role in protein folding quality control. This study identified three deposition disease-associated proteins as major plasma clients for clusterin by studying CLU-client complexes formed in response to physiologically relevant stress (shear stress, similar to 36 dynes/cm(2) at 37 degrees C). Analysis of plasma samples by size exclusion chromatography indicated that (i) relative to control plasma, stressed plasma contained proportionally more soluble protein species of high molecular weight, and (ii) high molecular weight species were far more abundant when proteins purified by anti-CLU immunoaffinity chromatography from stressed plasma …
The Two-Faced Nature Of Small Heat Shock Proteins: Amyloid Assembly And The Inhibition Of Fibril Formation. Relevance To Disease States, Heath W. Ecroyd, S Meehan, John A. Carver
The Two-Faced Nature Of Small Heat Shock Proteins: Amyloid Assembly And The Inhibition Of Fibril Formation. Relevance To Disease States, Heath W. Ecroyd, S Meehan, John A. Carver
Faculty of Science - Papers (Archive)
The ability of small heat-shock proteins (sHsps) such as alphaB-crystallin to inhibit the amorphous (disordered) aggregation of varied target proteins in a chaperone-like manner has been well described. The mechanistic details of this action are not understood. Amyloid fibril formation is an alternative off-folding pathway that leads to highly ordered beta-sheet-containing aggregates. Amyloid fibril formation is associated with a broad range of protein conformational diseases such as Alzhiemer's, Parkinson's and Huntington's and sHsp expression is elevated in the protein deposits that are characteristic of these disease states. The ability of sHsps to prevent fibril formation has been less well characterised. …
In Situ Growth Of Sno2 On Graphene Nanosheets As Advanced Anode Materials For Rechargeable Lithium Batteries, Xiaowei Yang, Yu-Shi He, Xiao-Zhen Liao, Jun Chen, Gordon G. Wallace, Zi-Feng Ma
In Situ Growth Of Sno2 On Graphene Nanosheets As Advanced Anode Materials For Rechargeable Lithium Batteries, Xiaowei Yang, Yu-Shi He, Xiao-Zhen Liao, Jun Chen, Gordon G. Wallace, Zi-Feng Ma
Faculty of Science - Papers (Archive)
Graphene with a single layer of carbon atoms densely packed in a honeycomb crystal lattice is one of attractive materials for the intercalation of lithium ion, but it has low volumetric capacity owing to low tap density. We report a method for in situ growth of SnO2 on graphene nanosheets (SGN) as anode materials for rechargeable lithium batteries. The results indicated that the SnO2 nanoparticles with size in the range of 5-10 nm and a polycrystalline structure are homogeneously supported on graphene nanosheets. The charge and discharge capacities of SGN attained to 1559.7 and 779.7 mAh/g in the first cycle …
Application Of A Simple Hydrodynamic Model To Estuary Entrance Management, Errol J. Mclean, Jon B. Hinwood
Application Of A Simple Hydrodynamic Model To Estuary Entrance Management, Errol J. Mclean, Jon B. Hinwood
Faculty of Science - Papers (Archive)
Tidal inlets which link a tidal basin to the sea via a constricted entrance are common on the south-east Australian coast. Closure, or even significant constriction, raises water levels but restricts tidal range within the basin, while open entrances provide regular and significant tidal exchange with the ocean. A rapid assessment procedure with minimal data requirements has been shown to be informative for monitoring and a useful component of any Decision Support System set up as part of a management structure. Such a system is presented in this paper. It is based on one permanent water level gauge inside the …
Diffusion Of Vitamin B12 In Gellan Gum-Carbon Nanotube Hydrogels, Cameron Ferris, Marc In Het Panhuis
Diffusion Of Vitamin B12 In Gellan Gum-Carbon Nanotube Hydrogels, Cameron Ferris, Marc In Het Panhuis
Faculty of Science - Papers (Archive)
We report on the diffusion of vitamin B12 through gellan gum-carbon nanotube hydrogels. The addition of carbon nanotubes to gellan gum reduced the vitamin B12 diffusion coefficient from 1.70 x 10-6 cm2/s to 0.70 x 10-6 cm2/s.
Evidence Of Solar And Tropical-Ocean Forcing Of Hydroclimate Cycles In Southeastern Australia For The Past 6500 Years, Hamish A. Mcgowan, Samuel K. Marx, Joshua Soderholm, John Denholm
Evidence Of Solar And Tropical-Ocean Forcing Of Hydroclimate Cycles In Southeastern Australia For The Past 6500 Years, Hamish A. Mcgowan, Samuel K. Marx, Joshua Soderholm, John Denholm
Faculty of Science - Papers (Archive)
Evidence of solar and tropical‐ocean forcing of climate cycles has been found in numerous palaeoclimate records. Numerical modelling studies show physical mechanisms by which direct and indirect solar forcing may affect climate, while there is mounting evidence of solar forcing of tropical ocean‐atmosphere teleconnections. This study has developed a 6500 year record of dust deposition, a proxy for regional hydroclimate variability for the Snowy Mountains region of Australia. Spectral analysis of the record provides evidence of statistically significant cycles in dust deposition of 35–43 years, 62–73 years, 161 years and 2200 years. These correlate with variability in solar irradiance and …
What You Need To Know About Selenium, Terry Young, Keith Finley, William Adams, John Besser, William D. Hopkins, Dianne F. Jolley, Eugenia Mcnaughton, Theresa S. Presser, D. Patrick Shaw, Jason Unrine
What You Need To Know About Selenium, Terry Young, Keith Finley, William Adams, John Besser, William D. Hopkins, Dianne F. Jolley, Eugenia Mcnaughton, Theresa S. Presser, D. Patrick Shaw, Jason Unrine
Faculty of Science - Papers (Archive)
No abstract provided.
Toxicity To Melita Plumulosa From Intermittent And Continuous Exposures To Dissolved Copper, Brad M. Angel, Stuart L. Simpson, Dianne F. Jolley
Toxicity To Melita Plumulosa From Intermittent And Continuous Exposures To Dissolved Copper, Brad M. Angel, Stuart L. Simpson, Dianne F. Jolley
Faculty of Science - Papers (Archive)
The concentrations of metal contaminants often fluctuate in estuarine waters; yet we have limited knowledge about the effects of intermittent exposures on estuarine organisms. Using 10-d lethality bioassays with the epibenthic amphipod Melita plumulosa, different combinations of intermittent (pulsed) dissolved Cu exposure were investigated, varying Cu concentration, pulse duration, and time between pulses. Negligible organism mortality was observed immediately after single 12- to 62-h duration pulsed exposures of 100 to 900 mg/L dissolved Cu. However, delayed mortality was observed in the subsequent 96-h nonexposure period, after which negligible additional mortality occurred during the remainder of the 240-h tests. For multiple …
To Germinate Or Not To Germinate: More Than Just A Question Of Dormancy, Ken Thompson, Mark K. J Ooi
To Germinate Or Not To Germinate: More Than Just A Question Of Dormancy, Ken Thompson, Mark K. J Ooi
Faculty of Science - Papers (Archive)
Consider the following four quotations concerning the distinction between breaking dormancy and stimulating germination.
Trend In Ice Moistening The Stratosphere-Constraints From Isotope Data Of Water And Methane, J. Northolt, G C. Toon, S Fueglistaler, P O. Wennberg, F Irion, M Mccarthy, M Scharringhausen, T Siek Rhee, A Kleinbohl, Voltaire A. Velazco
Trend In Ice Moistening The Stratosphere-Constraints From Isotope Data Of Water And Methane, J. Northolt, G C. Toon, S Fueglistaler, P O. Wennberg, F Irion, M Mccarthy, M Scharringhausen, T Siek Rhee, A Kleinbohl, Voltaire A. Velazco
Faculty of Science - Papers (Archive)
Water plays a major role in the chemistry and radiative budget of the stratosphere. Air enters the stratosphere predominantly in the tropics, where the very low temperatures around the tropopause constrain water vapour mixing ratios to a few parts per million. Observations of stratospheric water vapour show a large positive long-term trend, which can not be explained by change in tropopause temperatures. Trends in the partitioning between vapour and ice of water entering the stratosphere have been suggested to resolve this conundrum. We present measurements of stratospheric H2O, HDO, CH4 and CH3D in the period …
Synthesis Of Polyhydroxylated Pyrrolizidine And Indolizidine Compounds And Their Glycosidase Inhibitory Activities, Thunwadee Ritthiwigrom, Robert J. Nash, Stephen G. Pyne
Synthesis Of Polyhydroxylated Pyrrolizidine And Indolizidine Compounds And Their Glycosidase Inhibitory Activities, Thunwadee Ritthiwigrom, Robert J. Nash, Stephen G. Pyne
Faculty of Science - Papers (Archive)
The synthesis of the natural product 3-epi-casuarine and two tricyclic ether bridged analogues, plus 7-deoxy-3,6-diepi-casuarine, 7-epi-australine, 1-epi-castanospermine and 1,6-diepi-castanospermine is described. The glycosidase inhibitory activities of these compounds, along with that of uniflorine A and other polyhydroxylated pyrrolizidines and indolizidines that we have published before, are reported.
Synthesis Of 2′-Aminoalkyl-1-Benzylisoquinoline Derivatives And Medium Sized Ring Analogues With Mu Opiod Receptor Binding Activities, Uta Mbere-Nguyen, Alison T. Ung, Stephen G. Pyne
Synthesis Of 2′-Aminoalkyl-1-Benzylisoquinoline Derivatives And Medium Sized Ring Analogues With Mu Opiod Receptor Binding Activities, Uta Mbere-Nguyen, Alison T. Ung, Stephen G. Pyne
Faculty of Science - Papers (Archive)
Novel 2′-aminoalkyl-1-benzylisoquinoline compounds and medium size ring analogues have been prepared using reductive alkylation methods. Four of these analogues were tested for biological activity across 48 different CNS receptors and were showed to have binding activities at the mu opiod receptor.
The Acute Nociceptive Signals Induced By Bradykinin In Rat Sensory Neurons Are Mediated By Inhibition Of M-Type K+ Channels And Activation Of Ca2+-Activated Cl- Channels, Boyi Liu, John E. Linley, Xiaona Du, Xuan Zhang, Lezanne Ooi, Hailin Zhang, Nikita Gamper
The Acute Nociceptive Signals Induced By Bradykinin In Rat Sensory Neurons Are Mediated By Inhibition Of M-Type K+ Channels And Activation Of Ca2+-Activated Cl- Channels, Boyi Liu, John E. Linley, Xiaona Du, Xuan Zhang, Lezanne Ooi, Hailin Zhang, Nikita Gamper
Faculty of Science - Papers (Archive)
Bradykinin (BK) is an inflammatory mediator and one of the most potent endogenous pain-inducing substances. When released at sites of tissue damage or inflammation, or applied exogenously, BK produces acute spontaneous pain and causes hyperalgesia (increased sensitivity to potentially painful stimuli). The mechanisms underlying spontaneous pain induced by BK are poorly understood. Here we report that in small nociceptive neurons from rat dorsal root ganglia, BK, acting through its B2 receptors, PLC, and release of calcium from intracellular stores, robustly inhibits M-type K+ channels and opens Ca2+-activated Cl- channels (CaCCs) encoded by Tmem16a (also known as Ano1). Summation of these …
Transcriptional Control Of Kcnq Channel Genes And The Regulation Of Neuronal Excitability, Mariusz Mucha, Lezanne Ooi, John Linley, Pawel Mordaka, Carine Dalle, Brian Robertson, Nikita Gamper, Ian C. Wood
Transcriptional Control Of Kcnq Channel Genes And The Regulation Of Neuronal Excitability, Mariusz Mucha, Lezanne Ooi, John Linley, Pawel Mordaka, Carine Dalle, Brian Robertson, Nikita Gamper, Ian C. Wood
Faculty of Science - Papers (Archive)
Regulation of the resting membrane potential and the repolarization of neurons are important in regulating neuronal excitability. The potassium channel subunits Kv7.2 and Kv7.3 play a key role in stabilizing neuronal activity. Mutations in KCNQ2 and KCNQ3, the genes encoding Kv7.2 and Kv7.3, cause a neonatal form of epilepsy, and activators of these channels have been identified as novel antiepileptics and analgesics. Despite the observations that regulation of these subunits has profound effects on neuronal function, almost nothing is known about the mechanisms responsible for controlling appropriate expression levels. Here we identify two mechanisms responsible for regulating KCNQ2 and …
Chemistry Of Hydrogen Oxide Radicals (Hox) In The Arctic Troposphere In Spring, J Mao, D J. Jacob, M J. Evans, J R. Olson, X Ren, W H. Brune, T M. St. Clair, J D. Crounse, K M. Spencer, M R. Beaver, P O. Wennberg, M J. Cubison, J L. Jimenez, A Fried, P Weibring, J G. Walega, S R. Hall, A J. Weinheimer, R C. Cohen, G Chen, J H. Crawford, C Mcnaughton, A D. Clarke, L Jaegle, Jenny A. Fisher, R M. Yantosca, P Le Sager, C C. Carouge
Chemistry Of Hydrogen Oxide Radicals (Hox) In The Arctic Troposphere In Spring, J Mao, D J. Jacob, M J. Evans, J R. Olson, X Ren, W H. Brune, T M. St. Clair, J D. Crounse, K M. Spencer, M R. Beaver, P O. Wennberg, M J. Cubison, J L. Jimenez, A Fried, P Weibring, J G. Walega, S R. Hall, A J. Weinheimer, R C. Cohen, G Chen, J H. Crawford, C Mcnaughton, A D. Clarke, L Jaegle, Jenny A. Fisher, R M. Yantosca, P Le Sager, C C. Carouge
Faculty of Science - Papers (Archive)
We use observations from the April 2008 NASA ARCTAS aircraft campaign to the North American Arctic, interpreted with a global 3-D chemical transport model (GEOS-Chem), to better understand the sources and cycling of hydrogen oxide radicals (HOx≡H+OH+peroxy radicals) and their reservoirs (HOy≡HOx+peroxides) in the springtime Arctic atmosphere. We find that a standard gas-phase chemical mechanism overestimates the observed HO2 and H2O2 concentrations. Computation of HOx and HOy gas-phase chemical budgets on the basis of the aircraft observations also indicates a large missing sink for both. We hypothesize that …
Global Estimates Of Co Sources With High Resolution By Adjoint Inversion Of Multiple Satellite Datasets (Mopitt, Airs, Sciamachy, Tes), M Kopacz, D J. Jacob, J A. Fisher, J A. Logan, L Zhang, I A. Megretskaia, R M. Yantosca, K Singh, D K. Henze, J P. Burrows, M Buchwitz, I Khlystova, W. W Mcmillan, J C. Gille, D P. Edwards, A Eldering, V Thouret, P Nedelec
Global Estimates Of Co Sources With High Resolution By Adjoint Inversion Of Multiple Satellite Datasets (Mopitt, Airs, Sciamachy, Tes), M Kopacz, D J. Jacob, J A. Fisher, J A. Logan, L Zhang, I A. Megretskaia, R M. Yantosca, K Singh, D K. Henze, J P. Burrows, M Buchwitz, I Khlystova, W. W Mcmillan, J C. Gille, D P. Edwards, A Eldering, V Thouret, P Nedelec
Faculty of Science - Papers (Archive)
We combine CO column measurements from the MOPITT, AIRS, SCIAMACHY, and TES satellite instruments in a full-year (May 2004–April 2005) global inversion of CO sources at 4◦ ×5◦ spatial resolution and monthly temporal resolution. The inversion uses the GEOS-Chem chemical transport model (CTM) and its adjoint applied to MOPITT, AIRS, and SCIAMACHY. Observations from TES, surface sites (NOAA/GMD), and aircraft (MOZAIC) are used for evaluation of the a posteriori solution. Using GEOSChem as a common intercomparison platform shows global consistency between the different satellite datasets and with the in situ data. Differences can be largely explained by different averaging kernels …
The Arctic Research Of The Composition Of The Troposphere From Aircraft And Satellites (Arctas) Mission: Design, Execution, And First Results, D J. Jacob, J H. Crawford, H Maring, A D. Clarke, J E. Dibb, L K. Emmons, R A. Ferrare, C A. Hostetler, P B. Russell, H B. Singh, A M. Thompson, G E. Shaw, E Mccauley, J R. Pederson, J A. Fisher
The Arctic Research Of The Composition Of The Troposphere From Aircraft And Satellites (Arctas) Mission: Design, Execution, And First Results, D J. Jacob, J H. Crawford, H Maring, A D. Clarke, J E. Dibb, L K. Emmons, R A. Ferrare, C A. Hostetler, P B. Russell, H B. Singh, A M. Thompson, G E. Shaw, E Mccauley, J R. Pederson, J A. Fisher
Faculty of Science - Papers (Archive)
The NASA Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission was conducted in two 3-week deployments based in Alaska (April 2008) and western Canada (June–July 2008). Its goal was to better understand the factors driving current changes in Arctic atmospheric composition and climate, including (1) influx of mid-latitude pollution, (2) boreal forest fires, (3) aerosol radiative forcing, and (4) chemical processes. The June–July deployment was preceded by one week of flights over California (ARCTAS-CARB) focused on (1) improving state emission inventories for greenhouse gases and aerosols, (2) providing observations to test and improve models …
Source Attribution And Interannual Variability Of Arctic Pollution In Spring Constrained By Aircraft (Arctas, Arcpac) And Satellite (Airs) Observations Of Carbon Monoxide, J A. Fisher, D J. Jacob, M T. Purdy, M Kopacz, P Le Sager, C C. Carouge, C D. Holmes, R M. Yantosca, R L. Batchelor, K Strong, G S. Diskin, H E. Fuelberg, J S. Holloway, E J. Hyer, W. W Mcmillan, J Warner, D G. Streets, Q Zhang, Y Yang, S Wu
Source Attribution And Interannual Variability Of Arctic Pollution In Spring Constrained By Aircraft (Arctas, Arcpac) And Satellite (Airs) Observations Of Carbon Monoxide, J A. Fisher, D J. Jacob, M T. Purdy, M Kopacz, P Le Sager, C C. Carouge, C D. Holmes, R M. Yantosca, R L. Batchelor, K Strong, G S. Diskin, H E. Fuelberg, J S. Holloway, E J. Hyer, W. W Mcmillan, J Warner, D G. Streets, Q Zhang, Y Yang, S Wu
Faculty of Science - Papers (Archive)
We use aircraft observations of carbon monoxide (CO) from the NASA ARCTAS and NOAA ARCPAC campaigns in April 2008 together with multiyear (2003– 2008) CO satellite data from the AIRS instrument and a global chemical transport model (GEOS-Chem) to better understand the sources, transport, and interannual variability of pollution in the Arctic in spring. Model simulation of the aircraft data gives best estimates of CO emissions in April 2008 of 26 Tg month−1 for Asian anthropogenic, 9.4 for European anthropogenic, 4.1 for North American anthropogenic, 15 for Russian biomass burning (anomalously large that year), and 23 for Southeast Asian biomass …
The Response Of Melita Plumulosa To Continuous And Pulsed Exposures To Contaminated Sediment: A Study Of Avoidance And Toxicity, D J. Ward, D F. Jolley, Stuart L. Simpson
The Response Of Melita Plumulosa To Continuous And Pulsed Exposures To Contaminated Sediment: A Study Of Avoidance And Toxicity, D J. Ward, D F. Jolley, Stuart L. Simpson
Faculty of Science - Papers (Archive)
The distribution of contaminants is seldom homogeneous in aquatic systems and microniches within benthic sediments can make them particularly heterogeneous. Following exposure to ‘pulsed’ dissolved copper concentrations, toxicity to the epibenthic amphipod, Melita plumulosa, is best described by the time-averaged concentration. In this study we investigated the behavioural response of M. plumulosa, to contaminated marine sediments. Based on the rate at which the organism avoided contamination, we then investigated how toxic effects may occur through pulsed exposures to contaminated sediments. Four field-contaminated marine sediments were collected from the field and characterised as containing potentially toxic concentrations of metals. These sediments …
Essential Biological Processes Of An Emerging Pathogen: Dna Replication, Transcription, And Cell Division In Acinetobacter Spp., Andrew Robinson, Anthony J. Brzoska, Kylie M. Turner, Ryan Withers, Elizabeth J. Harry, Peter J. Lewis, Nicholas E. Dixon
Essential Biological Processes Of An Emerging Pathogen: Dna Replication, Transcription, And Cell Division In Acinetobacter Spp., Andrew Robinson, Anthony J. Brzoska, Kylie M. Turner, Ryan Withers, Elizabeth J. Harry, Peter J. Lewis, Nicholas E. Dixon
Faculty of Science - Papers (Archive)
Species of the bacterial genus Acinetobacter are becoming increasingly important as a source of hospital-acquired infections (31, 185, 204). Acinetobacter spp. are ubiquitous nonmotile gammaproteobacteria, typified by metabolic versatility and a capacity for natural transformation (172, 204). The species of most clinical relevance is A. baumannii; however, pathogenic strains of A. lwoffi and A. baylyi have also been described (38, 185, 215).