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Articles 1861 - 1890 of 4868

Full-Text Articles in Physical Sciences and Mathematics

Chemically Activated Reactions On The C7h5 Energy Surface: Propargyl + Diacetylene, I-C5h3 + Acetylene, And N-C5h3 + Acetylene, Gabriel Da Silva, Adam J. Trevitt Jan 2011

Chemically Activated Reactions On The C7h5 Energy Surface: Propargyl + Diacetylene, I-C5h3 + Acetylene, And N-C5h3 + Acetylene, Gabriel Da Silva, Adam J. Trevitt

Faculty of Science - Papers (Archive)

This study uses computational chemistry and statistical reaction rate theory to investigate the chemically activated reaction of diacetylene (butadiyne, C4H2) with the propargyl radical (C •H2CCH) and the reaction of acetylene (C 2H2) with the i-C5H3 (CH 2CCCC•H) and n-C5H3 (CHCC •HCCH) radicals. A detailed G3SX-level C7H 5 energy surface demonstrates that the C3H3 + C4H2 and C5H3 + C2H 2 addition reactions proceed with moderate barriers, on the order of 10 to 15 kcal mol-1, and form activated open-chain C 7H5 species that can isomerize to the fulvenallenyl radical with the highest barrier still significantly below the entrance channel …

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Novel Folding And Stability Defects Cause A Deficiency Of Human Glutathione Transferase Omega 1, Huina Zhou, Joseph Brock, Marco G. Casarotto, Aaron J. Oakley, Philip G. Board Jan 2011

Novel Folding And Stability Defects Cause A Deficiency Of Human Glutathione Transferase Omega 1, Huina Zhou, Joseph Brock, Marco G. Casarotto, Aaron J. Oakley, Philip G. Board

Faculty of Science - Papers (Archive)

The polymorphic deletion of Glu-155 from human glutathione transferase omega1 (GSTO1-1) occurs in most populations. Although the recombinant ΔGlu-155 enzyme expressed in Escherichia coli is active, the deletion causes a deficiency of the active enzyme in vivo. The crystal structure and the folding/unfolding kinetics of the ΔGlu-155 variant were determined in order to investigate the cause of the rapid loss of the enzyme in human cells. The crystal structure revealed altered packing around the Glu-155 deletion, an increase in the predicted solvent-accessible area and a corresponding reduction in the buried surface area. This increase in solvent accessibility was consistent with …

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Inkjet Printing Of Self-Assembling Polyelectrolyte Hydrogels, Skander Limen, Donald Mccallum, Gordon G. Wallace, Marc In Het Panhuis, Paul Calvert Jan 2011

Inkjet Printing Of Self-Assembling Polyelectrolyte Hydrogels, Skander Limen, Donald Mccallum, Gordon G. Wallace, Marc In Het Panhuis, Paul Calvert

Faculty of Science - Papers (Archive)

Inkjet printing of alternate layers of anionic and cationic polyelectrolytes allows organized gels to form with structures similar to those made by layer-by-layer dipping methods but very much faster. Structures of gels formed using slow and fast inkjet printing systems are compared using elemental analysis, swelling and diffusion kinetics as characterization methods. After printing and washing, most sodium or chloride counter-ions are lost from the gel, leaving only the polymer complex. The swelling properties of the printed and washed gel depend on the deposition rate and on the ratio of the two polymers as originally printed.

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Elvis In The Country: Transforming Place In Rural Australia, Christopher R. Gibson, John Connell Jan 2011

Elvis In The Country: Transforming Place In Rural Australia, Christopher R. Gibson, John Connell

Faculty of Science - Papers (Archive)

No abstract provided.

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Inkjet And Extrusion Printing Of Conducting Poly(3,4-Ethylenedioxythiophene) Tracks On And Embedded In Biopolymer Materials, Charles A. Mire, Animesh Agrawal, Gordon G. Wallace, Paul Calvert, Marc In Het Panhuis Jan 2011

Inkjet And Extrusion Printing Of Conducting Poly(3,4-Ethylenedioxythiophene) Tracks On And Embedded In Biopolymer Materials, Charles A. Mire, Animesh Agrawal, Gordon G. Wallace, Paul Calvert, Marc In Het Panhuis

Faculty of Science - Papers (Archive)

Two printing methods, extrusion and inkjet, are used to deposit tracks of PEDOT/PSS conducting polymer onto biopolymer films with a view to prepare implantable tissue mimics containing electronic devices. Extruded tracks offer lower printing resolution, but better electrical characteristics compared to inkjet printed tracks. The biopolymer–ink interaction results in narrower printed tracks compared to those on glass. This affects the final conductivity, which is lower for printed tracks on biopolymer than for lines printed on glass, due to the part of the track lying below the surface. Extrusion printing is used to embed tracks into a biopolymer matrix, resulting in …

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Ion Selectivity In Channels And Transporters, Benoit Roux, Simon Berneche, Berhard Egwolf, Bogdan Lev, Sergei Y. Noskov, Christopher N. Rowley, Haibo Yu Jan 2011

Ion Selectivity In Channels And Transporters, Benoit Roux, Simon Berneche, Berhard Egwolf, Bogdan Lev, Sergei Y. Noskov, Christopher N. Rowley, Haibo Yu

Faculty of Science - Papers (Archive)

No abstract provided.

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Towards Space Based Verification Of Co2 Emissions From Strong Localized Sources: Fossil Fuel Power Plant Emissions As Seen By A Carbonsat Constellation, Voltaire A. Velazco, M Buchwitz, H Bovensmann, M Reuter, O Schneising, J P. Heymann, T Krings, K Gerilowski, John P. Burrows Jan 2011

Towards Space Based Verification Of Co2 Emissions From Strong Localized Sources: Fossil Fuel Power Plant Emissions As Seen By A Carbonsat Constellation, Voltaire A. Velazco, M Buchwitz, H Bovensmann, M Reuter, O Schneising, J P. Heymann, T Krings, K Gerilowski, John P. Burrows

Faculty of Science - Papers (Archive)

No abstract provided.

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Reactions Of Simple And Peptidic Alpha-Carboxylate Radical Anions With Dioxygen In The Gas Phase, Tony Ly, Benjamin B. Kirk, Pramesh I. Hettiarachchi, Berwyck L. Poad, Adam J. Trevitt, Gabriel Da Silva, Stephen J. Blanksby Jan 2011

Reactions Of Simple And Peptidic Alpha-Carboxylate Radical Anions With Dioxygen In The Gas Phase, Tony Ly, Benjamin B. Kirk, Pramesh I. Hettiarachchi, Berwyck L. Poad, Adam J. Trevitt, Gabriel Da Silva, Stephen J. Blanksby

Faculty of Science - Papers (Archive)

α-Carboxylate radical anions are potential reactive intermediates in the free radical oxidation of biological molecules (e.g., fatty acids, peptides and proteins). We have synthesised well-defined α-carboxylate radical anions in the gas phase by UV laser photolysis of halogenated precursors in an ion-trap mass spectrometer. Reactions of isolated acetate (CH2CO 2-) and 1-carboxylatobutyl (CH3CH 2CH2CHCO2-) radical anions with dioxygen yield carbonate (CO3-) radical anions and this chemistry is shown to be a hallmark of oxidation in simple and alkyl-substituted cross-conjugated species. Previous solution phase studies have shown that Cα-radicals in peptides, formed from free radical damage, combine with dioxygen to form …

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Continental Aridification And The Vanishing Of Australia's Megalakes, Timothy J. Cohen, Gerald C. Nanson, John D. Jansen, B. G. Jones, Zenobia Jacobs, P Treble, David M. Price, Jan-Hendrik May, A Smith, Linda K. Ayliffe, John C. Hellstrom Jan 2011

Continental Aridification And The Vanishing Of Australia's Megalakes, Timothy J. Cohen, Gerald C. Nanson, John D. Jansen, B. G. Jones, Zenobia Jacobs, P Treble, David M. Price, Jan-Hendrik May, A Smith, Linda K. Ayliffe, John C. Hellstrom

Faculty of Science - Papers (Archive)

The nature of the Australian climate at about the time of rapid megafaunal extinctions and humans arriving in Australia is poorly understood and is an important element in the contentious debate as to whether humans or climate caused the extinctions. Here we present a new paleoshoreline chronology that extends over the past 100 k.y. for Lake Mega-Frome, the coalescence of Lakes Frome, Blanche, Callabonna and Gregory, in the southern latitudes of central Australia. We show that Lake Mega-Frome was connected for the last time to adjacent Lake Eyre at 50-47 ka, forming the largest remaining interconnected system of paleolakes on …

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Significance Of P2x7 Receptor Variants To Human Health And Disease, Ronald Sluyter, Leanne Stokes Jan 2011

Significance Of P2x7 Receptor Variants To Human Health And Disease, Ronald Sluyter, Leanne Stokes

Faculty of Science - Papers (Archive)

The human P2X7 receptor is a trimeric ligand-gated cation channel coded by the P2RX7 gene located at chromosome position 12q24. P2X7 is expressed in a wide variety of normal and disease-associated cell types. Activation of this receptor by extracellular adenosine 5’-triphosphate results in numerous downstream events including the release of pro-inflammatory mediators, cell proliferation or death, and killing of intracellular pathogens. As a result, P2X7 plays important roles in inflammation, immunity, bone homeostasis, neurological function and neoplasia. The P2RX7 gene encodes a P2X7 subunit 595 amino acids in length, however splice isoforms that can alter receptor expression and function, and …

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Alunite Formation Within Silica Stalactites From The Sydney Region, South-Eastern Australia, Robert A. Wray Jan 2011

Alunite Formation Within Silica Stalactites From The Sydney Region, South-Eastern Australia, Robert A. Wray

Faculty of Science - Papers (Archive)

"This paper presents X-ray diffraction and SEM evidence for the formation of alunite, and possibly small quantities of natroalunite, within opal-A stalactites formed on quartz sandstone near Sydney in south-eastern, Australia. Alunite has been reported as a speleogenetic mineral from sediments within a number of caves around the world, but this is believed to be the first report of speleothemic alunite in opaline silica speleothems. Individual alunite crystals have not been visually identified, but SEM X-ray element mapping suggests the alunite has formed amongst kaolinite clay. Sedimentary alunite and natroalunite formation is usually associated with the reaction of sulphuric acid …

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Phylum Arthropoda, Subphylum Trilobitomorpha: Trilobites, Anthony J. Wright, Roger A. Cooper Jan 2011

Phylum Arthropoda, Subphylum Trilobitomorpha: Trilobites, Anthony J. Wright, Roger A. Cooper

Faculty of Science - Papers (Archive)

This volume is the second of three that provide a complete review and inventory of New Zealand's entire living and fossil biodiversity - an international effort involving more than 220 New Zealand and overseas specialists and the most comprehensive of its kind in the world. Together, the three volumes will list every one of the almost 55,000 known species of New Zealand's animals, plants, fungi and micro-organisms. Volume 2 mostly deals with the major branch of the animal kingdom known as Ecdysozoa (moulting animals), which includes arachnids, centipedes and millipedes, crustaceans and insects. It also includes the enigmatic phylum Chaetognatha …

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The Moral Terrains Of Ecotourism And The Ethics Of Consumption, Robert Melchior Figueroa, Gordon R. Waitt Jan 2011

The Moral Terrains Of Ecotourism And The Ethics Of Consumption, Robert Melchior Figueroa, Gordon R. Waitt

Faculty of Science - Papers (Archive)

In this chapter, we provide a brief overview of Western philosophical ethics as they may peliain to tourism. Our discussion then turns to one of the most popular attempts to address sustainability across the globe: ecotourism. Ecotourism as distinct from tourism writ large is earmarked by appeals to concepts and ethical practices peliaining to sustainability (in all its varied meanings), consumption, preservation, and the politics of colonialism and the dynamics of global development strategies. In order to bring the ethics of consumption into the context of ecotourism, we provide a case account of ecotourism that represents one of the more …

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Soils Of Low Elevation Coral Structures, John Morrison Jan 2011

Soils Of Low Elevation Coral Structures, John Morrison

Faculty of Science - Papers (Archive)

The small islands of the South Pacific region, like many other parts of the world, arc (~\I\j riencing population growth and, more particularly, the movement of people into )11,1I1!1 urban centres. Most Pacific cities, especially the capitals of regional countries, arc locili ",I in naturally protected coastal waterways. This is a historical situation, arising from III,' need to provide protected deep-water harbours for ships, the main form of internaliol\,d travel and trade. These waters are protected by offshore barrier reefs, by islands or by ril(,1 ine deltas. However, these protective mechanisms also have the effect of limiting mix!II): of near-shore …

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Paleoclimate From Corals, Helen V. Mcgregor Jan 2011

Paleoclimate From Corals, Helen V. Mcgregor

Faculty of Science - Papers (Archive)

Ocean- atmosphere interactions in the tropics have farreaching conscqucnccs for climate variabi lity across the globe. The tropics drive heat transfer to the poles, and tropical inter-annual oscillations such as the El Nino-Southern Oscillation (ENSO) and Indian Ocean dipole (IOD), via atmospheric tcleconncctions, affcct rain rail patterns and climate conditions in arcas far bcyond the tropics (Ropelewski and Halpert, 1987), causing major socioeconomic impacts. Monitoring eIT0l1s have focused on improving obscrvations and undcrstanding of tropical climate variability, with the view to refining modeling or the tropical oceans and atmosphere. Despite these efforts, most instrumcntal records span only the past few …

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Synthesis Of Novel Sugar Diamino Acids, M Thillakan, A Katsifis, D Skropeta Jan 2011

Synthesis Of Novel Sugar Diamino Acids, M Thillakan, A Katsifis, D Skropeta

Faculty of Science - Papers (Archive)

Sugar amino acids (SAAs) are found in nature as good construction elements for the preparation of peptide mimetics and oiigosaccharides in drug design and development. The synthesis of SAAs is readily accomplished in few steps and more than 40 SAAs have been synthesised to date.2 Sugar amino acids with an additional amino group, the sugar diamino acid (SDAs) would represent a useful expansion to the library of SAAs available because one of the amino group and carboxylic acid is available for peptide coupling and the another amino/azide group allow to do further derivatisation via peptide or click chemistry such as …

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Reappraising The Role Of Suburban Workplaces In Darwin's Creative Economy, Chris Brennan-Horley Jan 2011

Reappraising The Role Of Suburban Workplaces In Darwin's Creative Economy, Chris Brennan-Horley

Faculty of Science - Papers (Archive)

Traditionally, suburbs have been conceived as dormitory – in binary opposition to the inner-city (Powell). Supporting this stereotypical view have been gendered binaries between inner and outer city areas; densely populated vs. sprawl; gentrified terraces and apartment culture vs. new estates and first home buyers; zones of (male) production and creativity against (female) sedate, consumer territory. These binaries have for over a decade been thoroughly criticised by urban researchers, who have traced such representations and demonstrated how they are discriminatory and incorrect (see Powell; Mee; Dowling and Mee). And yet, such binaries persist in popular media commentaries and even in …

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Preparation And Characterisation Of Conducting Biopolymer-Carbon Nanotube Composite Materials, Ali Aldalbahi, Marc In Het Panhuis Jan 2011

Preparation And Characterisation Of Conducting Biopolymer-Carbon Nanotube Composite Materials, Ali Aldalbahi, Marc In Het Panhuis

Faculty of Science - Papers (Archive)

In this work, kappa-carrageenan (KC) is used to prepare composite dispersions consisting of single-walled (SWNTs) and multi-walled (MWNTs) carbon nanotubes. Free-standing composite films were prepared by evaporative casting and vacuum filtration of these dispersions.

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Unmanned Aerial Vehicle (Uav) Remote Sensing For Hyperspatial Terrain Mapping Of Antarctic Moss Beds Based On Structure From Motion (Sfm) Point Clouds, A Lucieer, Sharon A. Robinson, D Turner Jan 2011

Unmanned Aerial Vehicle (Uav) Remote Sensing For Hyperspatial Terrain Mapping Of Antarctic Moss Beds Based On Structure From Motion (Sfm) Point Clouds, A Lucieer, Sharon A. Robinson, D Turner

Faculty of Science - Papers (Archive)

This study is the first to use an Unmanned Aerial Vehicle (UAV) for mapping moss beds in Antarctica. Mosses can be used as indicators for the regional effects of climate change. Mapping and monitoring their extent and health is therefore important. UAV aerial photography provides ultra-high resolution spatial data for this purpose. The aim of this study is to use Structure from Motion (SfM) techniques to generate a detailed 3D point cloud of the terrain from overlapping UAV photography.

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Membrane Biological Reactors, F I. Hai, K Yamamoto Jan 2011

Membrane Biological Reactors, F I. Hai, K Yamamoto

Faculty of Science - Papers (Archive)

Membrane biological reactors combine the use of biological processes and membrane technology to treat wastewater. The use of biological treatment can be traced back to the late nineteenth century. It became a standard method of wastewater treatment by the 1930s (Rittmann, 1987). Both aerobic and anaerobic biological treatment methods have been extensively used to treat domestic and industrial wastewater (Visvanathan et al., 2000). After removal of the soluble biodegradable matter in the biological process, any biomass formed needs to be separated from the liquid stream to produce the required effluent quality. In the conventional process, a secondary settling tank is …

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Preliminary Assessment Of The Handline (Banca) Fisheries In The Philippines (Fis/2009/033). Final Report, Ronald J. West, Mary Ann Palma, Noel Barut, Elaine Garvilles, Desiderio Ayanan Jan 2011

Preliminary Assessment Of The Handline (Banca) Fisheries In The Philippines (Fis/2009/033). Final Report, Ronald J. West, Mary Ann Palma, Noel Barut, Elaine Garvilles, Desiderio Ayanan

Faculty of Science - Papers (Archive)

The Philippines, with an Exclusive Economic Zone (EEZ) of 2.2 million sq. km, including over 7,000 islands, relies on fisheries as one of its major industries, sources of employment and in promoting food security. The hand-line fishery using bancas (or pump boats), catching commercially viable species such as tuna, is a major component of both municipal and commercial fisheries in the Philippines. Hand-line fishing is considered one of the most sustainable forms of fishing in the country. However, the economic significance of the hand-line fishery is increasingly threatened by a number of factors, including poor information on the fishery and …

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Phytochemical Studies On Stemona Aphylla: Isolation Of A New Stemofoline Alkaloid And Six New Stemofurans, Thanapat Sastraruji, Sukanda Chaiyong, Araya Jatisatienr, Stephen G. Pyne, Alison T. Ung, Wilford Lie Jan 2011

Phytochemical Studies On Stemona Aphylla: Isolation Of A New Stemofoline Alkaloid And Six New Stemofurans, Thanapat Sastraruji, Sukanda Chaiyong, Araya Jatisatienr, Stephen G. Pyne, Alison T. Ung, Wilford Lie

Faculty of Science - Papers (Archive)

A new stemofoline alkaloid, (2′S)-hydroxy-(11S,12R)-dihydrostemofoline (3), new stemofurans M-R (8-13), and known compounds stemofoline (1), (2′S)-hydroxystemofoline (2), stemofuran E (4), stemofuran F (5), stemofuran J (6), and stilbostemin F (7) have been isolated from the root extracts of Stemona aphylla. The structures and relative configurations of these new compounds have been determined by spectroscopic data interpretation and from semisynthetic studies. These natural and semisynthetic alkaloids were tested for acetylcholinesterase inhibitory activities and were found to be 10-20 times less active than 1′,2′-didehydrostemofoline itself. Stemofurans 4, 6, 8, 11, and 13 were tested for their antibacterial and antifungal activities. Three of …

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Light Interception And Utilisation, Sharon A. Robinson, J. R. Watling Jan 2011

Light Interception And Utilisation, Sharon A. Robinson, J. R. Watling

Faculty of Science - Papers (Archive)

Initial steps of photosynthesis involve interception and absorption of photons by photosynthetic organs; subsequent steps are involved with utilisation or dissipation of quantum energy so derived. Interception of light varies according to size, angle, orientation and surface features of the photosynthetic organ(s) and is also influenced by changes in the arrangement of photosynthetic tissue within those organs.

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Lutein From De-Epoxidation Of Lutein Epoxide Replaces Zeaxanthin To Sustain An Enhanced Capacity For Non-Photochemical Chlorophyll Fluorescence Quenching In Avocado Shade Leaves In The Dark, Britta Forster, Barry James Pogson, Charles Barry Osmond Jan 2011

Lutein From De-Epoxidation Of Lutein Epoxide Replaces Zeaxanthin To Sustain An Enhanced Capacity For Non-Photochemical Chlorophyll Fluorescence Quenching In Avocado Shade Leaves In The Dark, Britta Forster, Barry James Pogson, Charles Barry Osmond

Faculty of Science - Papers (Archive)

Leaves of avocado (Persea americana Mill.) that develop and persist in deep shade canopies have very low rates of photosynthesis but contain high concentrations of lutein epoxide (Lx) that are partially de-epoxidized to lutein (L) after one hour exposure to 120 to 350 μmol photons m-2 s-1 increasing the total L pool by 5-10% (ΔL). De-epoxidation of Lx to L was near stoichiometric and similar in kinetics to de-epoxidation of violaxanthin (V) to antheraxanthin (A) and zeaxanthin (Z). Although the V pool was restored by epoxidation of A and Z overnight, the Lx pool was not. Depending on leaf age …

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Is It Easy Being Green? On The Dilemmas Of Material Cultures Of Household Sustainability, Chris Gibson, Gordon R. Waitt, Lesley M. Head, Nicholas J. Gill Jan 2011

Is It Easy Being Green? On The Dilemmas Of Material Cultures Of Household Sustainability, Chris Gibson, Gordon R. Waitt, Lesley M. Head, Nicholas J. Gill

Faculty of Science - Papers (Archive)

In the 1970s ‘greens’ were normally thought of as radicals because of their uncompromising political views about sustainability, non-violence, social justice and grassroots democracy. Sometimes greens were marginalised as ‘tree-huggers’ because of their affinity with the non-human world. Today, in popular discourse, ‘green’ provides the centre of sustainability gravity (Barr 2003). Green has become a definitive reflection of what individuals are to become as both consumers and citizens. It is easy, it is said, to be green. This is evident from product branding to categories used in government survey results to describe the ‘most acceptable’ household practices. But as green …

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Is It Easy Being Green? On The Dilemmas Of Material Cultures Of Household Sustainability, Chris Gibson, Gordon R. Waitt, Lesley M. Head, Nick Gill Jan 2011

Is It Easy Being Green? On The Dilemmas Of Material Cultures Of Household Sustainability, Chris Gibson, Gordon R. Waitt, Lesley M. Head, Nick Gill

Faculty of Science - Papers (Archive)

In the 1970s ‘greens’ were normally thought of as radicals because of their uncompromising political views about sustainability, non-violence, social justice and grassroots democracy. Sometimes greens were marginalised as ‘tree-huggers’ because of their affinity with the non-human world. Today, in popular discourse, ‘green’ provides the centre of sustainability gravity (Barr 2003). Green has become a definitive reflection of what individuals are to become as both consumers and citizens. It is easy, it is said, to be green. This is evident from product branding to categories used in government survey results to describe the ‘most acceptable’ household practices. But as green …

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Remarkable Synergistic Effects In A Mixed Porphyrin Dye-Sensitized Tio2 Film, Attila J. Mozer, Gordon G. Wallace, David L. Officer, Matthew Griffith, Pawel W. Wagner, Klaudia K. Wagner, George Tsekouras, Shogo Mori, Ying Dong Jan 2011

Remarkable Synergistic Effects In A Mixed Porphyrin Dye-Sensitized Tio2 Film, Attila J. Mozer, Gordon G. Wallace, David L. Officer, Matthew Griffith, Pawel W. Wagner, Klaudia K. Wagner, George Tsekouras, Shogo Mori, Ying Dong

Faculty of Science - Papers (Archive)

A remarkable 300% efficiency enhancement driven by a matching increase in the short circuit current was observed in a mixed porphyrin dye-sensitized solar cell constructed from two dyes in a 3:1 ratio. Absorbed photon-to-current conversion efficiency measurements indicate an improved charge injection yield for both dyes in the mixture. Several possible origins for the observed performance enhancement are discussed.

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The Later Stone Age Calvaria From Iwo Eleru, Nigeria: Morphology And Chronology, Katerina Harvati, Chris Stringer, Rainer Grun, Maxime Aubert, Philip Allsworth-Jones, Caleb Adebayo Folorunso Jan 2011

The Later Stone Age Calvaria From Iwo Eleru, Nigeria: Morphology And Chronology, Katerina Harvati, Chris Stringer, Rainer Grun, Maxime Aubert, Philip Allsworth-Jones, Caleb Adebayo Folorunso

Faculty of Science - Papers (Archive)

Background: In recent years the Later Stone Age has been redated to a much deeper time depth than previously thought. At the same time, human remains from this time period are scarce in Africa, and even rarer in West Africa. The Iwo Eleru burial is one of the few human skeletal remains associated with Later Stone Age artifacts in that region with a proposed Pleistocene date. We undertook a morphometric reanalysis of this cranium in order to better assess its affinities. We also conducted Uranium-series dating to re-evaluate its chronology. Methodology/Principal Findings: A 3-D geometric morphometric analysis of cranial landmarks …

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1-(3-Chlorophenyl)-2-Methyl-4-Nitro-1h-Imidazole-5-Carboxamide, Pawel W. Wagner, Maciej Kubicki, A Korzanski Jan 2011

1-(3-Chlorophenyl)-2-Methyl-4-Nitro-1h-Imidazole-5-Carboxamide, Pawel W. Wagner, Maciej Kubicki, A Korzanski

Faculty of Science - Papers (Archive)

In the crystal structure of the title compound, C11H9ClN4O3,pairs of NH N(imidazole) hydrogen bonds connect themolecules into centrosymmetric dimers, which are furtherconnected by NH O(carbamoyl) hydrogen bonds intoC(4) chains along [010]. Interplay of these two kinds ofhydrogen bonds connect the molecules into layers perpendicularto [101]. The imidazole [maximum deviation0.0069 (9) A ] and phenyl rings are inclined at a dihedral angleof 58.44 (6); the nitro group is almost coplanar [dihedralangle 5.8 (2)] with the imidazole ring while the carbamoylgroup is almost perpendicular [70.15 (13)] to it.

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The Australian Methane Budget: Interpreting Surface And Train-Borne Measurements Using A Chemistry Transport Model, A Fraser, C C. Miller, Paul Palmer, Nicholas M. Deutscher, Nicholas B. Jones, David W. Griffith Jan 2011

The Australian Methane Budget: Interpreting Surface And Train-Borne Measurements Using A Chemistry Transport Model, A Fraser, C C. Miller, Paul Palmer, Nicholas M. Deutscher, Nicholas B. Jones, David W. Griffith

Faculty of Science - Papers (Archive)

We investigate the Australian methane budget from 2005-2008 using the GEOS-Chem 3D chemistry transport model, focusing on the relative contribution of emissions from different sectors and the influence of long-range transport. To evaluate the model, we use in situ surface measurements of methane, methane dry air column average (XCH 4) from ground-based Fourier transform spectrometers (FTSs), and train-borne surface concentration measurements from an in situ FTS along the north-south continental transect. We use gravity anomaly data from Gravity Recovery and Climate Experiment to describe the spatial and temporal distribution of wetland emissions and scale it to a prior emission estimate, …

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