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Articles 1 - 6 of 6
Full-Text Articles in Social and Behavioral Sciences
Process-Evaluation Of Tropospheric Humidity Simulated By General Circulation Models Using Water Vapor Isotopologues: 1. Comparison Between Models And Observations, Camille Risi, David Noone, John Worden, Christian Frankenberg, Gabriele Stiller, Michael Kiefer, Bernd Funke, Kaley Walker, Peter Bernath, Matthias Schneider, Debra Wunch, Vanessa Sherlock, Nicholas M. Deutscher, David W. Griffith, Paul O. Wennberg, Kimberly Strong, Dan Smale, Emmanuel Mahieu, Sabine Barthlott, Frank Hase, Omar Garcia, Justus Notholt, Thorsten Warneke, Geoffrey Toon, David Sayres, Sandrine Bony, Jeonghoon Lee, Derek Brown, Ryu Uemura, Christophe Sturm
Process-Evaluation Of Tropospheric Humidity Simulated By General Circulation Models Using Water Vapor Isotopologues: 1. Comparison Between Models And Observations, Camille Risi, David Noone, John Worden, Christian Frankenberg, Gabriele Stiller, Michael Kiefer, Bernd Funke, Kaley Walker, Peter Bernath, Matthias Schneider, Debra Wunch, Vanessa Sherlock, Nicholas M. Deutscher, David W. Griffith, Paul O. Wennberg, Kimberly Strong, Dan Smale, Emmanuel Mahieu, Sabine Barthlott, Frank Hase, Omar Garcia, Justus Notholt, Thorsten Warneke, Geoffrey Toon, David Sayres, Sandrine Bony, Jeonghoon Lee, Derek Brown, Ryu Uemura, Christophe Sturm
Faculty of Science - Papers (Archive)
[1] The goal of this study is to determine how H2O and HDO measurements in water vapor can be used to detect and diagnose biases in the representation of processes controlling tropospheric humidity in atmospheric general circulation models (GCMs). We analyze a large number of isotopic data sets (four satellite, sixteen ground-based remote-sensing, five surface in situ and three aircraft data sets) that are sensitive to different altitudes throughout the free troposphere. Despite significant differences between data sets, we identify some observed HDO/H2O characteristics that are robust across data sets and that can be used to evaluate models. We evaluate …
Investigating Arsenic Speciation And Mobilization In Sediments With Dgt And Det: A Mesocosm Evaluation Of Oxic-Anoxic Transitions, William W. Bennett, Peter R. Teasdale, Jarad G. Panther, David T. Welsh, Huijun Zhao, Dianne F. Jolley
Investigating Arsenic Speciation And Mobilization In Sediments With Dgt And Det: A Mesocosm Evaluation Of Oxic-Anoxic Transitions, William W. Bennett, Peter R. Teasdale, Jarad G. Panther, David T. Welsh, Huijun Zhao, Dianne F. Jolley
Faculty of Science - Papers (Archive)
Mobilization of arsenic from freshwater and estuarine sediments during the transition from oxic to anoxic conditions was investigated using recently developed diffusive sampling techniques. Arsenic speciation and Fe(II) concentrations were measured at high resolution (1−3 mm) with in situ diffusive gradients in thin films (DGT) and diffusive equilibration in thin films (DET) techniques. Water column anoxia induced Fe(II) and As(III) fluxes from the sediment. A correlation between water column Fe(II) and As(III) concentrations was observed in both freshwater (rs = 0.896, p < 0.001) and estuarine (rs = 0.557, p < 0.001) mesocosms. Porewater sampling by DGT and DET techniques confirmed that arsenic mobilization was associated with the reductive dissolution of Fe(III) (hydr)oxides in the suboxic zone of the sediment; a relationship that was visible because of the ability to measure the coincident profiles of these species using combined DGT and DET samplers. The selective measurement of As(III) and total inorganic arsenic by separate DGT samplers indicated that As(III) was the primary species mobilized from the solid phase to the porewater. This measurement approach effectively ruled out substantial As(V) mobilization from the freshwater and estuarine sediments in this experiment. This study demonstrates the capabilities of the DGT and DET techniques for investigating arsenic speciation and mobilization over a range of sediment conditions.
Synthesis And Preliminary Evaluation Of Amiloride Analogs As Inhibitors Of The Urokinase-Type Plasminogen Activator (Upa), Hayden Matthews, Marie Ranson, Joel Tyndall, Michael J. Kelso
Synthesis And Preliminary Evaluation Of Amiloride Analogs As Inhibitors Of The Urokinase-Type Plasminogen Activator (Upa), Hayden Matthews, Marie Ranson, Joel Tyndall, Michael J. Kelso
Faculty of Science - Papers (Archive)
A known side-activity of the oral potassium-sparing diuretic drug amiloride is inhibition of the enzyme urokinase-type plasminogen activator (uPA, Ki = 7 mu M), a promising anticancer target. Several studies have demonstrated significant antitumor/metastasis properties for amiloride in animal cancer models and it would appear that these arise, at least in part, through inhibition of uPA. Selective optimization of amiloride’s structure for more potent inhibition of uPA and loss of diuretic effects would thus appear as an attractive strategy towards novel anticancer agents. The following report is a preliminary structure-activity exploration of amiloride analogs as inhibitors of uPA. A …
Evaluation Of A Low Cost Wireless Chemical Sensor Network For Environmental Monitoring, Jer Hayes, Stephen Beirne, King-Tong Lau, Dermot Diamond
Evaluation Of A Low Cost Wireless Chemical Sensor Network For Environmental Monitoring, Jer Hayes, Stephen Beirne, King-Tong Lau, Dermot Diamond
Faculty of Science - Papers (Archive)
We present work on the development and testing of a low-cost wireless chemical sensor network (WCSN) for monitoring irritant/toxic gases in the environment. The WCSN used in this work takes advantage of recent advances in low power wireless communication platforms and uses colorimetric sensors to detect the presence of certain target gases. This sensor network adopts a star configuration and performs one way RF communications from individual sensor nodes to the base-station. Each node in the network is composed of a multiple sensor platform that measures light intensity, temperature and motion. The light sensor was used as the chemical sensing …
Evaluation Of Tropospheric And Stratospheric Ozone Trends Over Western Europe From Ground-Based Ftir Network Observations, C Vigouroux, M De Maziere, P Demoulin, C Servais, F Hase, T Blumenstock, I Kramer, M Schneider, J Mellqvist, A Strandberg, Voltaire A. Velazco, J Notholt, R Sussmann, W Stremme, A Rockmann, T Gardiner, M Coleman, P Woods
Evaluation Of Tropospheric And Stratospheric Ozone Trends Over Western Europe From Ground-Based Ftir Network Observations, C Vigouroux, M De Maziere, P Demoulin, C Servais, F Hase, T Blumenstock, I Kramer, M Schneider, J Mellqvist, A Strandberg, Voltaire A. Velazco, J Notholt, R Sussmann, W Stremme, A Rockmann, T Gardiner, M Coleman, P Woods
Faculty of Science - Papers (Archive)
Within the European project UFTIR (Time series of Upper Free Troposphere observations from an European ground-based FTIR network), six ground-based stations in Western Europe, from 79° N to 28° N, all equipped with Fourier Transform infrared (FTIR) instruments and part of the Network for the Detection of Atmospheric Composition Change (NDACC), have joined their efforts to evaluate the trends of several direct and indirect greenhouse gases over the period 1995–2004. The retrievals of CO, CH4, C2H6, N2O, CHClF2, and O3 have been optimized. Using the optimal estimation method, some …
Structure Of The Early Palaeozoic Cape River Metamorphics, Tasmanides Of North Queensland: Evaluation Of The Roles Of Convergent And Extensional Tectonics, Christopher L. Fergusson, R A Henderson, K. J. Lewthwaite, D. Phillips, I. W. Withnall
Structure Of The Early Palaeozoic Cape River Metamorphics, Tasmanides Of North Queensland: Evaluation Of The Roles Of Convergent And Extensional Tectonics, Christopher L. Fergusson, R A Henderson, K. J. Lewthwaite, D. Phillips, I. W. Withnall
Faculty of Science - Papers (Archive)
The Early Palaeozoic Cape River Metamorphics consist mainly of psammitic gneiss and schist and occur as an extensive linear belt at the western margin of the Charters Towers Province 200 km southwest of Townsville in the northern Tasmanides. A prominent foliation (S2) is the main structure in the belt and is associated with tight to isoclinal folds, subparallel mineral and intersection lineations, and boudinaged pods of vein quartz and pegmatite. In the southwest, the main foliation is a crenulation cleavage (S2) related to D2 deformation. It overprints steeply dipping foliation (S1) formed in …