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Articles 1651 - 1680 of 2377
Full-Text Articles in Physical Sciences and Mathematics
Application Of Layered Double Hydroxides To The Production Of Renewable Diesel, T. Morgan, D. Grubb, E. Santillian-Jimenez, Samuel Morton, M. Crocker
Application Of Layered Double Hydroxides To The Production Of Renewable Diesel, T. Morgan, D. Grubb, E. Santillian-Jimenez, Samuel Morton, M. Crocker
Samuel A Morton
No abstract provided.
Synthesis And Characterization Of Allylic Dinuclear Molybdenum Complexes With Bridging Oxygen And Sulfur Containing Ligands., Mazin Shatnawi, Samer Tanash, Saleem Al-Ahmad, Paul Challen, Gerald Henkel
Synthesis And Characterization Of Allylic Dinuclear Molybdenum Complexes With Bridging Oxygen And Sulfur Containing Ligands., Mazin Shatnawi, Samer Tanash, Saleem Al-Ahmad, Paul Challen, Gerald Henkel
Paul R. Challen
No abstract provided.
Human Adaptive Responses To Catastrophic Landscape Disruptions During The Holocene, Numundo, Png, Jeffrey Parr, William Boyd, Vicki Harriott, Robin Torrence
Human Adaptive Responses To Catastrophic Landscape Disruptions During The Holocene, Numundo, Png, Jeffrey Parr, William Boyd, Vicki Harriott, Robin Torrence
Jeffrey Parr
Prehistoric land use and social activity in West New Britain, PNG, are well documented, although the landscapes – largely shaped by catastrophic volcanic eruptions – in which these took place, and the relationships people had with these landscapes, are poorly understood. We define the evolving landscape at Numundo, from prior to the Witori-Kimbe 2 eruption (W-K2, ca. 3600 BP) to after the Witori-Kimbe 4 eruption (W-K4, ca. 1400 BP), using fossil phytolith and coral evidence at eight archaeological sites to provide environmental evidence of the human responses to periodic catastrophic events. From ca. 5900 to 3600 BP, all the sites …
Iron(Iii) Accumulations In Inland Saline Waterways, Hunter Valley, Australia: Mineralogy, Micromorphology And Pore-Water Geochemistry, Lloyd Isaacson, Edward Burton, Richard Bush, David Mitchell, Scott Johnston, Bennett Macdonald, Leigh Sullivan, Ian White
Iron(Iii) Accumulations In Inland Saline Waterways, Hunter Valley, Australia: Mineralogy, Micromorphology And Pore-Water Geochemistry, Lloyd Isaacson, Edward Burton, Richard Bush, David Mitchell, Scott Johnston, Bennett Macdonald, Leigh Sullivan, Ian White
Associate Professor Edward D Burton
Discharge of Fe(II)-rich groundwaters into surface-waters results in the accumulation of Fe(III)-minerals in salinized sand-bed waterways of the Hunter Valley, Australia. The objective of this study was to characterise the mineralogy, micromorphology and pore-water geochemistry of these Fe(III) accumulations. Pore-waters had a circumneutral pH (6.2–7.2), were sub-oxic to oxic (Eh 59–453 mV), and had dissolved Fe(II) concentrations up to 81.6 mg L−1. X-ray diffraction (XRD) on natural and acid-ammonium-oxalate (AAO) extracted samples indicated a dominance of 2-line ferrihydrite in most samples, with lesser amounts of goethite, lepidocrocite, quartz, and alumino-silicate clays. The majority of Fe in the samples was bound …
Changes In Water Quality Following Tidal Inundation Of Coastal Lowland Acid Sulfate Soil Landscapes, Scott Johnston, Richard Bush, Leigh Sullivan, Edward Burton, C Smith, Michelle Martens, Angus Mcelnea, Colin Ahern, Bernard Powell, Luisa Stephens, Steven Wilbraham, Simon Van Heel
Changes In Water Quality Following Tidal Inundation Of Coastal Lowland Acid Sulfate Soil Landscapes, Scott Johnston, Richard Bush, Leigh Sullivan, Edward Burton, C Smith, Michelle Martens, Angus Mcelnea, Colin Ahern, Bernard Powell, Luisa Stephens, Steven Wilbraham, Simon Van Heel
Associate Professor Edward D Burton
This study examines the remediation of surface water quality in a severely degraded coastal acid sulfate soil landscape. The remediation strategy consisted of partial restoration of marine tidal exchange within estuarine creeks and incremental tidal inundation of acidified soils, plus strategic liming of drainage waters. Time-series water quality and climatic data collected over 5 years were analysed to assess changes in water quality due to this remediation strategy. A time-weighted rainfall function (TWR) was generated from daily rainfall data to integrate the effects of antecedent rainfall on shallow groundwater levels in a way that was relevant to acid export dynamics. …
Iron-Monosulfide Oxidation In Natural Sediments: Resolving Microbially Mediated S Transformations Using Xanes, Electron Microscopy, And Selective Extractions, Edward Burton, Richard Bush, Leigh Sullivan, Rosalie Hocking, David Mitchell, Scott Johnston, R Fitzpatrick, M Raven, S Mcclure, L Yang
Iron-Monosulfide Oxidation In Natural Sediments: Resolving Microbially Mediated S Transformations Using Xanes, Electron Microscopy, And Selective Extractions, Edward Burton, Richard Bush, Leigh Sullivan, Rosalie Hocking, David Mitchell, Scott Johnston, R Fitzpatrick, M Raven, S Mcclure, L Yang
Associate Professor Edward D Burton
Iron-monosulfide oxidation and associated S transformations in a natural sediment were examined by combining selective extractions, electron microscopy and S K-edge X-ray absorption near-edge structure (XANES) spectroscopy. The sediment examined in this study was collected from a waterway receiving acid−sulfate soil drainage. It contained a high acid-volatile sulfide content (1031 μmol g−1), reflecting an abundance of iron-monosulfide. The iron-monosulfide speciation in the initial sediment sample was dominated by nanocrystalline mackinawite (tetragonal FeS). At near-neutral pH and an O2 partial pressure of 0.2 atm, the mackinawite was found to oxidize rapidly, with a half-time of 29 ± 2 min. This oxidation …
A Simple And Inexpensive Chromium-Reducible Sulfur Method For Acidsulfate Soils, Edward Burton, Leigh Sullivan, Richard Bush, Scott Johnston, Annabelle Keene
A Simple And Inexpensive Chromium-Reducible Sulfur Method For Acidsulfate Soils, Edward Burton, Leigh Sullivan, Richard Bush, Scott Johnston, Annabelle Keene
Associate Professor Edward D Burton
A new chromium-reducible sulfur (CRS) method suitable for the quantification of reduced inorganic S (RIS) in acid-sulfate soils is presented. The new method utilises the reduction of RIS by an acidic Cr(II) solution within a sealed reaction chamber and diffusion of the produced H2S(g) into an alkaline Zn solution. It offers rapid sample processing times, without the need for large volumes of high-purity N2(g) or for specialized, expensive glassware. Examination of pyrite-talc mixtures containing up to 11.8% pyrite, revealed that the method achieves 95–98% recovery of RIS. A comparison between CRS measured by the new diffusion-based …
Pattern-Avoiding Colored Partitions, Lara Pudwell
Pattern-Avoiding Colored Partitions, Lara Pudwell
Lara K. Pudwell
No abstract provided.
Climate Change, Sustainable Development, And Ecosystems: 2009 Annual Report, John Dernbach
Climate Change, Sustainable Development, And Ecosystems: 2009 Annual Report, John Dernbach
John C. Dernbach
No abstract provided.
Enumeration Schemes For Permutations Avoiding Barred Patterns, Lara Pudwell
Enumeration Schemes For Permutations Avoiding Barred Patterns, Lara Pudwell
Lara K. Pudwell
No abstract provided.
Strategies For Preparing Computer Science Students For The Multicore World, Elizabeth Shoop, Et Al
Strategies For Preparing Computer Science Students For The Multicore World, Elizabeth Shoop, Et Al
Elizabeth Shoop
No abstract provided.
Shock Wave Formation On Turbulent Coanda Surfaces, T. Dowd, Caroline Lubert
Shock Wave Formation On Turbulent Coanda Surfaces, T. Dowd, Caroline Lubert
Caroline P Lubert
No abstract provided.
Variability Of The Apparent Von Kármán Constant During Aeolian Saltation, Bailiang Li, Douglas Sherman, Eugene Farrell, Jean Ellis
Variability Of The Apparent Von Kármán Constant During Aeolian Saltation, Bailiang Li, Douglas Sherman, Eugene Farrell, Jean Ellis
Jean Taylor Ellis
No abstract provided.
Collaborative Research: Graptolite Biogeography, Paleo-Gis, And Evolutionary Dynamics Of Early Paleozoic Zooplankton, Daniel Goldman
Collaborative Research: Graptolite Biogeography, Paleo-Gis, And Evolutionary Dynamics Of Early Paleozoic Zooplankton, Daniel Goldman
Daniel Goldman
Funding Agency: National Service Foundation Investigators: Dr. Goldman, SY. Wu Amount: $255,326.00 Number of years: 4 years
Towards High Efficiency Solution Processable Inverted Bulk Heterojunction Polymer Solar Cells Using Modified Indium-Tin-Oxide Cathode, Xh Chen, Jx Yang, Ly Xuan, C Laley, J Lu, F.R. Zhu, Kp Loh
Towards High Efficiency Solution Processable Inverted Bulk Heterojunction Polymer Solar Cells Using Modified Indium-Tin-Oxide Cathode, Xh Chen, Jx Yang, Ly Xuan, C Laley, J Lu, F.R. Zhu, Kp Loh
Professor ZHU, Fu Rong
No abstract provided.
Introduction To Life Data Analysis, Caroline Lubert, C. Lange
Introduction To Life Data Analysis, Caroline Lubert, C. Lange
Caroline P Lubert
No abstract provided.
An Investigation Of Shock-Associated Noise, L. Haling, Caroline Lubert
An Investigation Of Shock-Associated Noise, L. Haling, Caroline Lubert
Caroline P Lubert
No abstract provided.
Embedded Systems As Datacenters, Robert Iannucci
Embedded Systems As Datacenters, Robert Iannucci
Robert A Iannucci
No abstract provided.
Enumeration Schemes For Words Avoiding Permutations, Lara Pudwell
Enumeration Schemes For Words Avoiding Permutations, Lara Pudwell
Lara K. Pudwell
No abstract provided.
Soa Reference Architecture, Liang-Jie Zhang, Jia Zhang
Soa Reference Architecture, Liang-Jie Zhang, Jia Zhang
Jia Zhang
No abstract provided.
Geology And Geomorphology Of Coral Pink Sand Dunes State Park, Utah, R. Ford, S. Gillman, David Wilkins, W. Clement, K. Nicoll
Geology And Geomorphology Of Coral Pink Sand Dunes State Park, Utah, R. Ford, S. Gillman, David Wilkins, W. Clement, K. Nicoll
David E. Wilkins
No abstract provided.
Counting Interesting Elections, Lara Pudwell, Eric Rowland
Counting Interesting Elections, Lara Pudwell, Eric Rowland
Lara K. Pudwell
No abstract provided.
Teaching Non-Mathematics Majors Using Group Topic Books, Caroline Lubert
Teaching Non-Mathematics Majors Using Group Topic Books, Caroline Lubert
Caroline P Lubert
No abstract provided.
Characteristics Of Methyl Cellulose-Nh4no3-Peg Electrolyte And Application In Fuel Cells, Siti Rohana Majid, Shuhaimi N. E. A., Alias N. A., Kufian M. Z., Arof A. K.
Characteristics Of Methyl Cellulose-Nh4no3-Peg Electrolyte And Application In Fuel Cells, Siti Rohana Majid, Shuhaimi N. E. A., Alias N. A., Kufian M. Z., Arof A. K.
Siti Rohana Majid
We report the viability of methyl cellulose (MC) as a membrane in a polymer electrolyte membrane fuel cell (PEMFC). Methyl cellulose serves as the polymer host, ammonium nitrate (NH4NO3) as the doping salt and poly(ethylene glycol) (PEG) as plasticizer. Conductivity measurement was carried out using electrochemical impedance spectroscopy. The room temperature conductivity of pure MC film is is (3.08 +/- 0.63) x 10(-11)S cm(-1). The conductivity increased to (2.10 +/- 0.37) x 10(-6)S cm(-1) on addition of 25 wt.% NH4NO3. By adding 15 wt.% of PEG 200 to the highest conducting sample in the MC-NH4NO3 system, the conductivity was further …
Bismuth Compounds In Organic Synthesis: Synthesis Of Dioxanes, Dioxepines, And Dioxolanes Catalyzed By Bismuth(Iii) Triflate, Ram Mohan, Daniel Podgorski, Scott Krabbe, Long Le, Paul Sierszulski
Bismuth Compounds In Organic Synthesis: Synthesis Of Dioxanes, Dioxepines, And Dioxolanes Catalyzed By Bismuth(Iii) Triflate, Ram Mohan, Daniel Podgorski, Scott Krabbe, Long Le, Paul Sierszulski
Ram S. Mohan
A simple method for the synthesis of l,3-dioxolanes from carbonyl compounds has been developed using l,2-bis(trimethylsilyloxy) ethane in the presence of bismuth (III) triflate as a catalyst. The bismuth(III) triflate catalyzed synthesis of a range of dioxanes and dioxepines has also been developed. In these latter cases, the carbonyl compound is treated with a diol, and triethyl orthoformate is used as a water scavenger. All these methods avoid the use of a Dean-Stark trap.
Stacking Blocks And Counting Permutations, Lara Pudwell
Stacking Blocks And Counting Permutations, Lara Pudwell
Lara K. Pudwell
No abstract provided.
A Snapshot Of Results Of The Survey Study On Rfid Technology, S. F. Wamba
A Snapshot Of Results Of The Survey Study On Rfid Technology, S. F. Wamba
Dr Samuel Fosso Wamba
No abstract provided.
The 1905 Einstein Equation In A General Mathematical Analysis Model Of Quasars, Byron E. Bell
The 1905 Einstein Equation In A General Mathematical Analysis Model Of Quasars, Byron E. Bell
Byron E. Bell
No abstract provided.
Using Twitter Hash Tags To Demonstrate Basic Concepts From Network Analysis, Matt Bogard
Using Twitter Hash Tags To Demonstrate Basic Concepts From Network Analysis, Matt Bogard
Matt Bogard
Social Network Analysis focuses on finding patterns in interactions between people or entities. These patterns may be described in the form of a network. Network analysis in general has many applications including models of student integration and persistence, business to business supply chains, terrorist cells, or analysis of social media such as Facebook and Twitter. This presentation provides a reference for basic concepts from social network analysis with examples using tweets from Twitter.
Katina On Right Path To Test Tracking Technology, Courtney Trenwith, K. Michael
Katina On Right Path To Test Tracking Technology, Courtney Trenwith, K. Michael
Professor Katina Michael
No abstract provided.