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Articles 61 - 89 of 89
Full-Text Articles in Physical Sciences and Mathematics
Transcending Nostalgia: Pastoralist Memory And Staking A Claim In The Land, Nicholas J. Gill
Transcending Nostalgia: Pastoralist Memory And Staking A Claim In The Land, Nicholas J. Gill
Faculty of Science - Papers (Archive)
The strength of Australian outback mythology in providing a blueprint for what Australian society, landscapes and history ought to be, lies at least partly in its ‘lack of specificity in time and space’, coupled with retrospect. Deborah Bird Rose has argued that such free-floating retrospect diverts attention from ‘here and now of our lives’, and militates against dealing with the consequences of Australia’s colonial past and present. The inland and north of Australia, the so-called ‘frontier’, in a spatial sense, are, and have been, places where optimistic non-indigenous assessments of land have been subject to regular appraisal and debate. They …
Shipborne Solar Absorption Measurements Of Co2, Ch4, N2o And Co And Comparison With Sciamachy Wfm-Doas Retrievals, T Warneke, R De Beek, M Buchwitz, J Notholt, A Schulz, Voltaire A. Velazco, O Schrems
Shipborne Solar Absorption Measurements Of Co2, Ch4, N2o And Co And Comparison With Sciamachy Wfm-Doas Retrievals, T Warneke, R De Beek, M Buchwitz, J Notholt, A Schulz, Voltaire A. Velazco, O Schrems
Faculty of Science - Papers (Archive)
CO, CH4, N2O and CO2 were retrieved from high resolution solar absorption spectra obtained during a ship cruise from Capetown to Bremerhaven in January/February 2003 by Fourier Transform Infrared (FTIR) spectroscopy. Precisions of better than 0.5% for the column averaged volume mixing ratios (VMR) of CH4 and CO2 are achieved using of O2 as a reference gas. Shipborne FTIR-measurements of CO and data from SCIAMACHY/ENVISAT retrieved by the Weighting Function Modified Differential Optical Absorption Spectroscopy (WFM-DOAS) retrieval algorithm show qualitatively the same latitudinal variations. WFMDOAS data of CH4, N2O and CO2 measured over sea exhibit a great spread. The spread …
Intercomparison Of O3 Profiles Observed By Sciamachy And Ground Based Microwave Instruments, M Palm, C V. Savigny, T Warneke, Voltaire A. Velazco, J Notholt, K Kunzi, J Burrows, O Schrems
Intercomparison Of O3 Profiles Observed By Sciamachy And Ground Based Microwave Instruments, M Palm, C V. Savigny, T Warneke, Voltaire A. Velazco, J Notholt, K Kunzi, J Burrows, O Schrems
Faculty of Science - Papers (Archive)
Ozone profiles retrieved from limb scattering measurements of the SCIAMACHY instrument based on the satellite ENVISAT are compared to ground-based low altitude resolution remote sensors. All profiles are retrieved using optimal estimation. Following the work of Rodgers and Connor (2003) the retrievals of the ground-based instruments are simulated using the SCIAMACHY retrieval. The SCIAMACHY results and the results of the ground-based microwave radiometer in Bremen and Ny A° lesund agree within the expected covariance of the intercomparison.
Increased Northern Hemispheric Carbon Monoxide Burden In The Troposphere In 2002 And 2003 Detected From The Ground And From Space, L N. Yurganov, P Duchatelet, A V. Dzhola, D P. Edwards, F Hase, I Kramer, E Mahieu, J Mellqvist, J Notholt, P C. Novelli, A Rockmann, H E. Scheel, M Schneider, A Schulz, A Strandberg, R Sussmann, H Tanimoto, Voltaire A. Velazco, J Drummond, J Gille
Increased Northern Hemispheric Carbon Monoxide Burden In The Troposphere In 2002 And 2003 Detected From The Ground And From Space, L N. Yurganov, P Duchatelet, A V. Dzhola, D P. Edwards, F Hase, I Kramer, E Mahieu, J Mellqvist, J Notholt, P C. Novelli, A Rockmann, H E. Scheel, M Schneider, A Schulz, A Strandberg, R Sussmann, H Tanimoto, Voltaire A. Velazco, J Drummond, J Gille
Faculty of Science - Papers (Archive)
Carbon monoxide total column amounts in the atmosphere have been measured in the High Northern Hemisphere (30°- 90° N, HNH) between January 2002 and December 2003 using infrared spectrometers of high and moderate resolution and the Sun as a light source. They were compared to ground-level CO mixing ratios and to total column amounts measured from space by the Terra/MOPITT instrument. All these data reveal increased CO abundances in 2002-2003 in comparison to the unperturbed 2000-2001 period. Maximum anomalies were observed in September 2002 and August 2003. Using a simple two-box model, the corresponding annual CO emission anomalies (referenced to …
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 …
The Geological Context Of Middle Pleistocene Crater Lake Deposits And Fossil Birds At Ulupau Head, Oahu, Hawaiian Islands, Paul Hearty, H. F. James, S. L. Olson
The Geological Context Of Middle Pleistocene Crater Lake Deposits And Fossil Birds At Ulupau Head, Oahu, Hawaiian Islands, Paul Hearty, H. F. James, S. L. Olson
Faculty of Science - Papers (Archive)
Pleistocene lake deposits in Ulupau Crater on Oahu contain the oldest fossil bird remains known from the Hawaiian Islands. These fossils are important for documenting evolutionary rates in a variety of lineages of land and water birds from the islands. Detailed stratigraphic analysis reveals distinct cycles of deposition involving interbedded lacustrine deposits, colluvium, and paleosols. The volcanic basin was breached by marine erosion prior to the peak of the last interglaciation (marine isotope stage or ‘MIS’ 5e) over 125 ky ago, constraining the age of the lake sediments to the middle Pleistocene. The three cycles of deposition (Units III, IV, …
Pre-Mining Pattern Of Soils On Nauru, Central Pacific, Robert John Morrison, Harley I. Manner
Pre-Mining Pattern Of Soils On Nauru, Central Pacific, Robert John Morrison, Harley I. Manner
Faculty of Science - Papers (Archive)
The environment of Nauru, a raised atoll located in the central Pacific Ocean (0° 32′ S, 166° 56′ W), was devastated by mining of phosphate “rock” during the twentieth century. Some 100 million tonnes of phosphate material has been removed, leaving more than 80% of the island as a dolomite pinnacle–dominated karrenfeld. Based on fieldwork examining sites unmined at that time, laboratory studies on undisturbed profiles, aerial photographs, and old mining maps, a picture of what the soil pattern on Nauru was before mining has been developed. Four major soil associations were identified: the coastal fringe carbonate dominated soils set …
Channel Pattern And Deltaic-Estuarine Process In The Indo-Pacific Region, Colin D. Woodroffe
Channel Pattern And Deltaic-Estuarine Process In The Indo-Pacific Region, Colin D. Woodroffe
Faculty of Science - Papers (Archive)
This paper explores the concept that deltaic-estuarine geomorphology is a function of the dominant processes. It has been traditional to recognize river, wave and tidal processes as the principal controls on the gross morphology of deltas. To a lesser extent, these processes are also recognized as significant controls on the shape of estuaries. The complex deltas of the Southeast Asian region contain active deltaic plains and often extensive abandoned deltaic plains which preserve an imprint of the processes which have shaped them. In northern Australia, where estuaries are more extensive than deltas, similar geomorphological features can be recognized and the …
Illuminating Southeast Asian Prehistory : New Archaeological And Paleoanthropological Frontiers For Luminescence Dating, Richard G. Roberts, Michael J. Morwood, Kira E. Westaway
Illuminating Southeast Asian Prehistory : New Archaeological And Paleoanthropological Frontiers For Luminescence Dating, Richard G. Roberts, Michael J. Morwood, Kira E. Westaway
Faculty of Science - Papers (Archive)
Since the explorations of Alfred Russel Wallace and Eugène Dubois in the nineteenth century, Southeast Asia has been one of the world's focal points for studies of biogeography and biodiversity, human evolution and dispersal, environmental change, and the spread of culture, farming, and language. Yet despite its prominence, reliable chronologies are not available for many of the critical archaeological, evolutionary, and environmental turning points that have taken place in the region during the last 1.5 million years. In this paper, we discuss some of these chronological problems and describe how luminescence dating may help overcome them. "Luminescence dating" is a …
Combining Structure-Based Drug Design And Pharmacophores, Renate Griffith, T. T. T. Luu, James A. Garner, Paul A. Keller
Combining Structure-Based Drug Design And Pharmacophores, Renate Griffith, T. T. T. Luu, James A. Garner, Paul A. Keller
Faculty of Science - Papers (Archive)
Development towards integrated computer-aided drug design methodologies is presented by utilising crystal structure complexes to produce structure-based pharmacophores. These novel pharmacophores represent the ligand features that are involved in interactions with the target protein, as well as the space around the ligand occupied by the protein. The protein-ligand complexes can also yield information about all interactions that ligands could potentially form with the binding site, as well as about the size of the binding cavity. Together, these describe a 'superligand', which can also be viewed as a pharmacophore. Various types of novel pharmacophores are discussed and compared, using HIV-1 Reverse …
Symbolic Revolutions And The Australian Archaeological Record, Mark W. Moore, Adam R. Brumm
Symbolic Revolutions And The Australian Archaeological Record, Mark W. Moore, Adam R. Brumm
Faculty of Science - Papers (Archive)
Australia was colonized by at least 40,000 bp and scientists agree that the continent was only ever occupied by anatomically and behaviourally modern humans. Australia thus offers an alternative early record for the archaeological expression of behavioural modernity. This review finds that the pattern of change in the Australian archaeological sequence bears remarkable similarity to the pattern from the Lower to Upper Palaeolithic in the Old World, a finding that is inconsistent with the 'symbolic revolution' model of the origin of modern behaviour. This highlights the need for archaeologists to rethink the implications of the various criteria and scales of …
Structure, Detrital Zircon U-Pb Ages And 40ar/39ar Geochronology Of The Early Palaeozoic Girilambone Group, Central New South Wales: Subduction, Contraction And Extension Associated With The Benambran Orogeny, Christopher L. Fergusson, C M Fanning, D. Phillips, Benjamin Ackerman
Structure, Detrital Zircon U-Pb Ages And 40ar/39ar Geochronology Of The Early Palaeozoic Girilambone Group, Central New South Wales: Subduction, Contraction And Extension Associated With The Benambran Orogeny, Christopher L. Fergusson, C M Fanning, D. Phillips, Benjamin Ackerman
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 …
The Illawarra Beaches 1900-1945: A Place To Become Bronzed, Christine Metusela
The Illawarra Beaches 1900-1945: A Place To Become Bronzed, Christine Metusela
Faculty of Science - Papers (Archive)
It was not until the early 1900s that the Australian beach first emerged as a western recreational space. Swimming (known as surf bathing) became a legalised practice, surf lifesaving became institutionalised and activities such as surfing were introduced; all things that make up an important part of Australian culture today. This article examines the emergence of the surf lifesaving movement in the lllawarra between 1900 and 1945. By analysing surf club records the beach space can be seen as a place that has been 'made' and socially constructed. The surf lifesaving discourse brings insights into the beach making processes and …
An Automated Gis Method For Modeling Relative Wave Exposure Within Complex Reef-Island Systems: A Case Study Of The Great Barrier Reef, Marjetta L. Puotinen
An Automated Gis Method For Modeling Relative Wave Exposure Within Complex Reef-Island Systems: A Case Study Of The Great Barrier Reef, Marjetta L. Puotinen
Faculty of Science - Papers (Archive)
Patterns of wave energy play a significant role in shaping the long-term structure of coral reef communities worldwide. For example, sections of reefs have been shown to vary greatly in morphology (dominant size class, growth form) as coral colonies adapt in response to local-scale differences in the wave heights typically experienced. These differences result in zonation (crest, lagoon, and slope), producing characteristic growth forms and species assemblages that vary in their vulnerability to damage from waves (Done 1993). Those communities experiencing the greatest typical wave energy align themselves parallel to the water flow, adopt stream-lined forms and are usually smaller …
Toxicity, Biotransformation, And Mode Of Action Of Arsenic In Two Freshwater Microalgae (Chlorella Sp. And Monoraphidium Arcuatum), Jacqueline L. Levy, Jennifer L. Stauber, Merrin S. Adams, William A. Maher, Jason K. Kirby, Dianne F. Jolley
Toxicity, Biotransformation, And Mode Of Action Of Arsenic In Two Freshwater Microalgae (Chlorella Sp. And Monoraphidium Arcuatum), Jacqueline L. Levy, Jennifer L. Stauber, Merrin S. Adams, William A. Maher, Jason K. Kirby, Dianne F. Jolley
Faculty of Science - Papers (Archive)
The toxicity of As(V) and As(III) to two axenic tropical 15 freshwater microalgae, Chlorella sp. and Monoraphidium arcuatum, was determined using 72-h growth rate inhibition bioassays. Both organisms were tolerant to As(III) (72-h IC50, concentration to cause 50% inhibition of growth, of 25 and 15 mg As(III)/L, respectively). Chlorella sp. was also tolerant to As(V) with no effect on growth rate over 72 h at concentrations up to 0.8 mg/L (72-h IC50 of 25 mg As(V)/L). M. arcuatum was more sensitive to As(V) (72-h IC50 of 0.25 mg As(V)/L). An increase in phosphate in the growth medium (0.15 to 1.5 …
Evidence For Altitude-Dependent Photolysis-Induced 18o Isotopic Fractionation In Stratospheric Ozone, Vanessa E. Haverd, Geoffrey C. Toon, David W. Griffith
Evidence For Altitude-Dependent Photolysis-Induced 18o Isotopic Fractionation In Stratospheric Ozone, Vanessa E. Haverd, Geoffrey C. Toon, David W. Griffith
Faculty of Science - Papers (Archive)
We present vertical profiles of 18O fractionations in ozone, measured by balloon-borne infrared remote sensing between 15 and 40 km. The magnitudes of the 16O16O18O (668O3) and 16O18O16O (686O3) fractionations are 13.5 +/- 2.7% and 7.7 +/- 2.2%, averaged over the 20-35 km altitude range, in good agreement with previous atmospheric measurements by mass spectrometry and both infrared and far infrared remote sensing spectroscopy. We use our fractionation profiles, together with known fractionation effects of the ozone formation reaction, to deduce …
Tropical Cyclone Disturbance Of Coral Communities Of The Great Barrier Reef, 1969-2003, Marjetta L. Puotinen
Tropical Cyclone Disturbance Of Coral Communities Of The Great Barrier Reef, 1969-2003, Marjetta L. Puotinen
Faculty of Science - Papers (Archive)
The primary building block of coral reef ecosystems, whether an isolated mid-ocean atoll or a complex system of thousands of reefs, are the individual coral colonies that combine to form the reef structures which host coral communities. The state of a coral reef community (i.e. percentage coral coverage, dominant growth forms and size classes), or any other ecosystem, at any given time is the result of interactions between a range of disturbances and routine ecological processes that operate across a continuum of spatial and temporal scales (Gunderson et al 2002). The biological (living coral colonies) and structural (dead coral framework …
Synthesis Of 2-Azaspiro[4.4]Nonan-1-Ones Via Phosphine-Catalysed [3+2]-Cycloadditions, Sarah Yong, Morwenna C. Williams, Stephen G. Pyne, Alison T. Ung, Brian W. Skelton, Allan H. White, P. Turner
Synthesis Of 2-Azaspiro[4.4]Nonan-1-Ones Via Phosphine-Catalysed [3+2]-Cycloadditions, Sarah Yong, Morwenna C. Williams, Stephen G. Pyne, Alison T. Ung, Brian W. Skelton, Allan H. White, P. Turner
Faculty of Science - Papers (Archive)
The phosphine-catalysed [3+2]-cycloaddition of the 2-methylene γ-lactams 4 and 5 and the acrylate 6 with the ylides derived from the ethyl ester, the amide or the chiral camphor sultam derivative of 2-butynoic acid (7a-c) give directly, or indirectly after reductive cyclization, spiro-heterocyclic products. The acid 32 underwent Curtius rearrangement and then acid hydrolysis to give two novel spiro-cyclic ketones, 41 and 42.
Quasi-Static Analysis Of Defected Ground Structure, Nemai C. Karmakar, Sushim Mukul Roy, Isaac Balbin, Gerhard F. Swiegers
Quasi-Static Analysis Of Defected Ground Structure, Nemai C. Karmakar, Sushim Mukul Roy, Isaac Balbin, Gerhard F. Swiegers
Faculty of Science - Papers (Archive)
A quasi-static equivalent circuit model of a dumbbell shaped defected ground structure (DGS) is developed. The equivalent circuit model is derived from the equivalent inductance and capacitance developed due to the perturbed returned current path on the ground and the narrow gap, respectively. The theory is validated against the commercial full-wave solver CST Microwave Studio. Finally, the calculated results are compared with the measured results. Good agreement between the theory, the commercially available numerical analyses and the experimental results validates the developed theoretical model.
A Survey Of Martian Dust Devil Activity Using Mars Global Surveyor Mars Orbiter Camera Images, Jenny A. Fisher, Mark I. Richardson, Claire E. Newman, Mark A. Szwast, Chelsea Graf, Shabari Basu, Shawn P. Ewald, Anthony D. Toigo, R. John Wilson
A Survey Of Martian Dust Devil Activity Using Mars Global Surveyor Mars Orbiter Camera Images, Jenny A. Fisher, Mark I. Richardson, Claire E. Newman, Mark A. Szwast, Chelsea Graf, Shabari Basu, Shawn P. Ewald, Anthony D. Toigo, R. John Wilson
Faculty of Science - Papers (Archive)
A survey of dust devils using the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) wide- and narrow-angle (WA and NA) images has been undertaken. The survey comprises two parts: (1) sampling of nine broad regions from September 1997 to July 2001 and (2) a focused seasonal monitoring of variability in the Amazonis region, an active dust devil site, from March 2001 to April 2004. For part 1, dust devils were identified in NA and WA images, and dust devil tracks were identified in NA images. Great spatial variability in dust devil occurrence is highlighted, with Amazonis Planitia being the …
Potential Application Of Solid Electrolyte P11oh In Ni/Mh Batteries, C.Y Wang, J. Sun, Hua-Kun Liu, S. X. Dou, D. Macfarlace, M. Forsyth
Potential Application Of Solid Electrolyte P11oh In Ni/Mh Batteries, C.Y Wang, J. Sun, Hua-Kun Liu, S. X. Dou, D. Macfarlace, M. Forsyth
Faculty of Science - Papers (Archive)
No abstract provided.
Photoelectrochemical Cells Based On Inherently Conducting Polymers, Gordon G. Wallace, Chee O. Too, David L. Officer, Paul C Dastoor
Photoelectrochemical Cells Based On Inherently Conducting Polymers, Gordon G. Wallace, Chee O. Too, David L. Officer, Paul C Dastoor
Faculty of Science - Papers (Archive)
This review of photoelectrochemical cells (PECs) based on inherently conducting polymers (ICPs) deals with the mechanisms of operation and the various factors that influence the overall efficiency of PECs. The factors addressed include ICP composition and oxidation state, the use of nanostructured surfaces and interfaces, and the PEC electrolyte and redox mediator.
Synthesis, Modeling, And Characterization Of Conducting Polymers, Geoffrey M. Spinks, Lianbin Zhao, Weihua Li, Yanzhe Wu, Dezhi Zhou, Gordon G. Wallace
Synthesis, Modeling, And Characterization Of Conducting Polymers, Geoffrey M. Spinks, Lianbin Zhao, Weihua Li, Yanzhe Wu, Dezhi Zhou, Gordon G. Wallace
Faculty of Science - Papers (Archive)
This paper presents synthesis and characterization of polypyrrole based conducting polymers in terms of electronic and mechanical disciplines. Using the electrochemical polymerization approach, conducting polymer samples with different dimensions (length, width, and thickness) was fabricated. For each sample, both sinusoidal and step excitations were used to study its mechanical and electrical properties. An equivalent electric circuit based on constant phase element (CPE) is proposed to model such responses. Electrochemical impedance spectroscopy (EIS) method was used to identify the relationship between the dimensions of conducting polymers and model elements parameters.
Carbanions: Formation, Structure And Thermochemistry, Stephen J. Blanksby, John H. Bowie
Carbanions: Formation, Structure And Thermochemistry, Stephen J. Blanksby, John H. Bowie
Faculty of Science - Papers (Archive)
This chapter deals with even-electron carbanions: their formation, structure and thermochemical properties in the gas phase. There are a number of excellent reviews already available on the chemistry of carbanions: these discuss in the main, reactivity and anion molecule chemistry.1-4 In this chapter we focus primarily on the formation, structure and thermochemistry of simple hydrocarbon anions while other chapters in this encyclopaedia cover the broader aspects of carbanion chemistry (see Volume 1, “Strained Ring and Highly Basic Carbanions” and this volume, Reactions of Organic Molecules with Organic Ions: “Reactions of Anions with Carbonyl Centres: C–C Bond Forming Reactions”, and Unimolecular …
Does Mate Guarding Prevent Rival Mating In Snow Skinks? A Test Using Aflp, Mats M. Olsson, Beata Ujvari, Erik Wapstra, Thomas R. Madsen, Rick Shine, S. Bensch
Does Mate Guarding Prevent Rival Mating In Snow Skinks? A Test Using Aflp, Mats M. Olsson, Beata Ujvari, Erik Wapstra, Thomas R. Madsen, Rick Shine, S. Bensch
Faculty of Science - Papers (Archive)
We report on likely mixed paternity in a natural population of snow skinks (Niveoscincus mirolepidotus) from alpine Tasmania, Australia. This species is nonterritorial and males guard females after copulation, suggesting that guarding behavior has evolved to prevent rival mating of still-receptive females. To what degree does this mate-guarding prevent rival copulations? We sampled gravid females at random in the wild and looked for within-clutch mixed paternity among their offspring using amplified fragment length polymorphism (AFLP). Incorporating all visualized fragments, offspring band-sharing based on maternal bands was 0.94 (60.05, SD), whereas for paternal fragments it was 0.54 (60.46, SD). We then …
Rotational Effects In The Band Oscillator Strengths And Predissociation Linewidths For The Lowest 1pi U X 1sigma + G Transitions Of N2, V. E. Haverd, B.R. Lewis, S.T. Gibson, G. Stark
Rotational Effects In The Band Oscillator Strengths And Predissociation Linewidths For The Lowest 1pi U X 1sigma + G Transitions Of N2, V. E. Haverd, B.R. Lewis, S.T. Gibson, G. Stark
Faculty of Science - Papers (Archive)
A coupled-channel Schrödinger equation (CSE) model of photodissociation, which includes the effects of all interactions between the , , and and the and states, is employed to study the effects of rotation on the lowest- band oscillator strengths and predissociationlinewidths. Significant rotational dependences are found which are in excellent agreement with recent experimental results, where comparisons are possible. New extreme-ultraviolet (EUV)photoabsorption spectra of the key transition of are also presented and analyzed, revealing apredissociationlinewidth peaking near . This behavior can be reproduced only if the triplet structure of the state is included explicitly in the CSE-model calculations, with a spin-orbit …
High Spectral Resolution Solar Absorption Measurements Of Ethylene (C2h4) In A Forest Fire Smoke Plume Using Hitran Parameters: Troposheric Vertical Profile Retrieval, Curtis P. Rinsland, Clare Paton-Walsh, Nicholas B. Jones, David W. T Griffith, Aaron Goldman, Stephen W. Wood, Linda Chiou, Arndt Meier
High Spectral Resolution Solar Absorption Measurements Of Ethylene (C2h4) In A Forest Fire Smoke Plume Using Hitran Parameters: Troposheric Vertical Profile Retrieval, Curtis P. Rinsland, Clare Paton-Walsh, Nicholas B. Jones, David W. T Griffith, Aaron Goldman, Stephen W. Wood, Linda Chiou, Arndt Meier
Faculty of Science - Papers (Archive)
The tropospheric mixing ratio profile of ethylene (C2H4)(C2H4) has been retrieved from a high spectral resolution ground-based infrared solar absorption spectrum. The spectrum was recorded during intense fires in New South Wales, Australia on January 1, 2002, and was analyzed with the C2H4C2H4 spectral parameters added to the 2000 HITRAN compilation. Absorption by C2H4C2H4 in the smoke-affected spectrum extends over a broad spectral range in a region with observable rotational fine structure. The fine structure occurs in addition to the View the MathML source949.5cm-1ν7ν7 band Q branch that is traditionally used to quantify C2H4C2H4 amounts from infrared atmospheric measurements assuming …
Localized Storms, Edward A. Bryant
Localized Storms, Edward A. Bryant
Faculty of Science - Papers (Archive)
The previous chapter was mainly concerned with the effects of strong winds generated by secondary features of general air circulation. These winds were associated with the development of low-pressure cells spanning areas of 10,000–100,000 km−2. While tropical cyclones and extra-tropical depressions produce some of the strongest winds and highest amounts of precipitation over the widest areas, they are by no means the only source of high winds or heavy precipitation. These values can be matched by thunderstorms, which cover no more than 500 km2 in area and rarely travel more than 100–200 km before dissipating. They can produce high-magnitude, short-period …
Synthesis Of Carbocyclic Hydantocidins Via Regioselective And Diastereoselective Phosphine-Catalyzed [3+2]-Cycloadditions To 5-Methylenehydantoins, Tien Quoc Pham, Stephen G. Pyne, Brian W. Skelton, Allan H. White
Synthesis Of Carbocyclic Hydantocidins Via Regioselective And Diastereoselective Phosphine-Catalyzed [3+2]-Cycloadditions To 5-Methylenehydantoins, Tien Quoc Pham, Stephen G. Pyne, Brian W. Skelton, Allan H. White
Faculty of Science - Papers (Archive)
The phosphine-catalysed [3+2]-cycloaddition of 5-methylenehydantoins 4 with the ylides 5, derived from addition of tributylphosphine to the 2-butynoic acid derivatives, 6a-d, gives spiro-heterocyclic products. The camphor sultam derivative 6b gives optically active products. Noteable was that the ylides derived from ethyl 2-butynoate and the 3-(2-butynoyl)-1,3-oxazolidin-2-one derivatives 6c and 6d gave spiro-heterocyclic products with reverse regioselectivities. The N,N-dibenzylprotected cycloadduct has been converted to carbocyclic hydantocidin and 6,7-diepi-carbocyclic hydantocidin.