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Full-Text Articles in Physical Sciences and Mathematics
Cytotoxic And Anticancer Activities Of Isatin And Its Derivatives: A Comprehensive Review From 2000-2008, Marie Ranson, Danielle Skropeta, Julie Locke, Lidia Matesic, Kara Perrow
Cytotoxic And Anticancer Activities Of Isatin And Its Derivatives: A Comprehensive Review From 2000-2008, Marie Ranson, Danielle Skropeta, Julie Locke, Lidia Matesic, Kara Perrow
Danielle Skropeta
No abstract provided.
Structural Re-Assignment Of The Mono- And Bis-Addition Products From The Addition Reactions Of N-(Diphenylmethylene)Glycinate Esters To [60]Fullerene Under Bingel Conditions, Graham E Ball, Glenn Ashley Burley, Leila Chaker, William Hawkins, James Williams, Paul A. Keller, Stephen G. Pyne
Structural Re-Assignment Of The Mono- And Bis-Addition Products From The Addition Reactions Of N-(Diphenylmethylene)Glycinate Esters To [60]Fullerene Under Bingel Conditions, Graham E Ball, Glenn Ashley Burley, Leila Chaker, William Hawkins, James Williams, Paul A. Keller, Stephen G. Pyne
Paul Keller
The addition of N-(diphenylmethylene)glycinate esters (Ph2C=NCH2CO2R) to [60]fullerene under Bingel conditions gives [60]fullerenyldihydropyrroles and not methano[60]fullerenyl iminoesters [C60C(CO2R)(N=CPh2)] as previously reported. Unequivocal evidence for the structure of C60C(CO2Et)(N=CPh2) was provided by INADEQUATE NMR studies on 13C enriched material. New mechanistic details are proposed to account for the formation of [60]fullerenyldihydropyrroles and their reductive ring-opening reactions.
Sea Level, Storm, Or Tsunami: Engimatic Sand Sheet Deposits In A Sheltered Coastal Embayment From Southeastern New South Wales, Australia, Edward Bryant, Brian Jones, Kevin Pucillo, Rabea Haredy, Adam Switzer
Sea Level, Storm, Or Tsunami: Engimatic Sand Sheet Deposits In A Sheltered Coastal Embayment From Southeastern New South Wales, Australia, Edward Bryant, Brian Jones, Kevin Pucillo, Rabea Haredy, Adam Switzer
B. G. Jones
No abstract provided.
Ichnological And Sedimentologic Signatures Of Mixed Wave- And Storm-Dominated Deltaic Deposits: Examples From The Early Permian Sydney Basin, Australia, Brian Jones, Stuart Tye, James Maceachern, Kerrie Bann, Christopher Fielding
Ichnological And Sedimentologic Signatures Of Mixed Wave- And Storm-Dominated Deltaic Deposits: Examples From The Early Permian Sydney Basin, Australia, Brian Jones, Stuart Tye, James Maceachern, Kerrie Bann, Christopher Fielding
B. G. Jones
No abstract provided.
Large-Scale Washover Sedimentation In A Freshwater Lagoon From The Southeast Australian Coast: Sea-Level Change, Tsunami Or Exceptionally Large Storm?, Brian Jones, Adam Switzer
Large-Scale Washover Sedimentation In A Freshwater Lagoon From The Southeast Australian Coast: Sea-Level Change, Tsunami Or Exceptionally Large Storm?, Brian Jones, Adam Switzer
B. G. Jones
No abstract provided.
Further Evidence For Small-Bodied Hominins From The Late Pleistocene Of Flores Indonesia, Michael Morwood, P. Brown, Jatmiko, T. Sutikna, E.W. Saptomo, Kira Westaway, R. A. Due, Richard Roberts, T Maeda, S Wasisto, T Djubiantono
Further Evidence For Small-Bodied Hominins From The Late Pleistocene Of Flores Indonesia, Michael Morwood, P. Brown, Jatmiko, T. Sutikna, E.W. Saptomo, Kira Westaway, R. A. Due, Richard Roberts, T Maeda, S Wasisto, T Djubiantono
Richard G Roberts
Homo floresiensis was recovered from Late Pleistocene deposits on the island of Flores in eastern Indonesia, but has the stature, limb proportions and endocranial volume of African Pliocene Australopithecus 1. The holotype of the species (LB1), excavated in 2003 from Liang Bua, consisted of a partial skeleton minus the arms. Here we describe additional H. floresiensis remains excavated from the cave in 2004. These include arm bones belonging to the holotype skeleton, a second adult mandible, and postcranial material from other individuals. We can now reconstruct the body proportions of H. floresiensis with some certainty. The finds further demonstrate …
Equivalent Dose Distributions From Single Grains Of Quartz At Sibudu, South Africa: Context, Causes And Consequences For Optical Dating Of Archaeological Deposits, Richard Roberts, Zenobia Jacobs, Geoffrey Duller, Ann Wintle
Equivalent Dose Distributions From Single Grains Of Quartz At Sibudu, South Africa: Context, Causes And Consequences For Optical Dating Of Archaeological Deposits, Richard Roberts, Zenobia Jacobs, Geoffrey Duller, Ann Wintle
Richard G Roberts
No abstract provided.
The Cyrenaican Prehistory Project 2008: The Second Season Of Investigations Of The Haua Fteah Cave And Its Landscape, And Further Results From The Initial (2007) Fieldwork, Richard Roberts, Zenobia Jacobs, Johnny Morales, M. Morley, R. Grun, L Farr, C Hunt, G Barker, R Rabett, T Reynolds, Victoria Leitch, Robyn Inglis, Roisin Hamilton, John Davison, Hwedi El-Rishi, Alex Pryor, David Simpson, Marijke Van Der Veen, Chris Stimpson, Steven Pawley, Mohammed Touati, Caroline Cartwright, Franca Cole, Iain Morley, Lucilla Burn, Ian Brooks, Laura Basell
The Cyrenaican Prehistory Project 2008: The Second Season Of Investigations Of The Haua Fteah Cave And Its Landscape, And Further Results From The Initial (2007) Fieldwork, Richard Roberts, Zenobia Jacobs, Johnny Morales, M. Morley, R. Grun, L Farr, C Hunt, G Barker, R Rabett, T Reynolds, Victoria Leitch, Robyn Inglis, Roisin Hamilton, John Davison, Hwedi El-Rishi, Alex Pryor, David Simpson, Marijke Van Der Veen, Chris Stimpson, Steven Pawley, Mohammed Touati, Caroline Cartwright, Franca Cole, Iain Morley, Lucilla Burn, Ian Brooks, Laura Basell
Richard G Roberts
No abstract provided.
A High-Resolution Record Of Vegetation And Climate Through The Last Glacial Cycle From Caledonia Fen, Southeastern Highlands Of Australia, A Kershaw, G Mckenzie, N Porch, Richard Roberts, J Browne, H Heijnis, M Orr, Geraldine Jacobsen, P Newall
A High-Resolution Record Of Vegetation And Climate Through The Last Glacial Cycle From Caledonia Fen, Southeastern Highlands Of Australia, A Kershaw, G Mckenzie, N Porch, Richard Roberts, J Browne, H Heijnis, M Orr, Geraldine Jacobsen, P Newall
Richard G Roberts
A blocked tributary has provided a rare site of long-term sediment accumulation in montane southeastern Australia. This site has yielded a continuous, detailed pollen record through the last ca. 140 000 years and revealed marked vegetation and environmental changes at orbital to sub-millennial scales. Radiocarbon and optically stimulated luminescence (OSL, or optical) ages provide some chronological control for the last ca. 70 000 years. Most of the sediment is inorganic but with well preserved pollen that accumulated under unproductive and probably largely ice-covered lake conditions. The lake was surrounded by low-growing plants with an alpine character. Exceptions include three discrete …
Initial Speleothem Results From Western Flores And Eastern Java, Indonesia: Were Climate Changes From 47 To 5ka Responsible For The Extinction Of Homo Floresiensis?, Richard Roberts, Allan Chivas, T. Sutikna, Michael Morwood, J Zhao, Kira Westaway
Initial Speleothem Results From Western Flores And Eastern Java, Indonesia: Were Climate Changes From 47 To 5ka Responsible For The Extinction Of Homo Floresiensis?, Richard Roberts, Allan Chivas, T. Sutikna, Michael Morwood, J Zhao, Kira Westaway
Richard G Roberts
No abstract provided.
Optically Stimulated Luminescence Dating Of Single And Multiple Grains Of Quartz From Perennially Frozen Loess In Western Yukon Territory, Canada: Comparison With Radiocarbon Chronologies For The Late Pleistocene Dawson Tephra, Richard Roberts, Lee Arnold, Martina Demuro, F Brock, D Froese, C Bronk Ramsey
Optically Stimulated Luminescence Dating Of Single And Multiple Grains Of Quartz From Perennially Frozen Loess In Western Yukon Territory, Canada: Comparison With Radiocarbon Chronologies For The Late Pleistocene Dawson Tephra, Richard Roberts, Lee Arnold, Martina Demuro, F Brock, D Froese, C Bronk Ramsey
Richard G Roberts
No abstract provided.
A Southern Indian Middle Palaeolithic Occupation Surface Sealed By The 74 Ka Toba Eruption: Further Evidence From Jwalapuram Locality 22, Richard Roberts, Allan Chivas, Christopher Clarkson, Ravi Korisettar, Nicole Boivin, Michael Petraglia, Peter Ditchfield, Michael Haslam, Janardhana Bora, Sanjay Eksambekar, Victoria Smith, Anna Oh, Clair Harris
A Southern Indian Middle Palaeolithic Occupation Surface Sealed By The 74 Ka Toba Eruption: Further Evidence From Jwalapuram Locality 22, Richard Roberts, Allan Chivas, Christopher Clarkson, Ravi Korisettar, Nicole Boivin, Michael Petraglia, Peter Ditchfield, Michael Haslam, Janardhana Bora, Sanjay Eksambekar, Victoria Smith, Anna Oh, Clair Harris
Richard G Roberts
No abstract provided.
Error Variation In Osl Palaeodose Estimates From Singles Aliquots Of Quartz: A Factorial Experiment, Richard Roberts, R.F. Galbraith, Hiroyuki Yoshida
Error Variation In Osl Palaeodose Estimates From Singles Aliquots Of Quartz: A Factorial Experiment, Richard Roberts, R.F. Galbraith, Hiroyuki Yoshida
Richard G Roberts
No abstract provided.
Middle Paleolithic Assemblages From The Indian Subcontinent, Before And After The Toba Super-Eruption, Michael Petraglia, Ravi Korisettar, Nicole Boivin, Christopher Clarkson, Peter Ditchfield, Sacha Jones, Jinu Koshy, Marta Lahr, Clive Oppenheimer, David Pyle, Richard Roberts, Jean-Luc Schwenninger, Lee Arnold, Kevin White
Middle Paleolithic Assemblages From The Indian Subcontinent, Before And After The Toba Super-Eruption, Michael Petraglia, Ravi Korisettar, Nicole Boivin, Christopher Clarkson, Peter Ditchfield, Sacha Jones, Jinu Koshy, Marta Lahr, Clive Oppenheimer, David Pyle, Richard Roberts, Jean-Luc Schwenninger, Lee Arnold, Kevin White
Richard G Roberts
The Youngest Toba Tuff (YTT) eruption, which occurred in Indonesia 74,000 years ago, is one of Earth's largest known volcanic events. The effect of the YTT eruption on existing populations of humans, and accordingly on the course of human evolution, is debated. Here we associate the YTT with archaeological assemblages at Jwalapuram, in the Jurreru River valley of southern India. Broad continuity of Middle Paleolithic technology across the YTT event suggests that hominins persisted regionally across this major eruptive event.
An Arid-Adapted Middle Pleistocene Vertebrate Fauna From South-Central Australia, Richard Roberts, Lee Arnold, John Hellstrom, Gavin Prideaux, Mark Hutchinson, Linda Ayliffe, Walter Boles, Matthew Cupper, Paul Devine, Brad Pillans, John Long
An Arid-Adapted Middle Pleistocene Vertebrate Fauna From South-Central Australia, Richard Roberts, Lee Arnold, John Hellstrom, Gavin Prideaux, Mark Hutchinson, Linda Ayliffe, Walter Boles, Matthew Cupper, Paul Devine, Brad Pillans, John Long
Richard G Roberts
No abstract provided.
Advances In Optically Stimulated Luminescence Dating Of Individual Grains Of Quartz From Archaeological Deposits, Richard Roberts, Zenobia Jacobs
Advances In Optically Stimulated Luminescence Dating Of Individual Grains Of Quartz From Archaeological Deposits, Richard Roberts, Zenobia Jacobs
Richard G Roberts
No abstract provided.
Nanofiber Mats From Dna, Swnts, And Poly(Ethylene Oxide) And Their Application In Glucose Biosensors, Jun Chen, Chee O. Too, Gordon G. Wallace, Tuan A Nguyen, Violetta Misoska, Yong Liu
Nanofiber Mats From Dna, Swnts, And Poly(Ethylene Oxide) And Their Application In Glucose Biosensors, Jun Chen, Chee O. Too, Gordon G. Wallace, Tuan A Nguyen, Violetta Misoska, Yong Liu
Gordon Wallace
Ultrafine fibers with diameters ranging from 50 to 300 nm were prepared from DNA/single-walled carbon nanotubes (SWNTs)/poly(ethylene oxide) blended dispersion. Well-defined electrospun fibers were obtained by good control of key dispersion properties related to electrospinning, such as ionic conductivity, surface tension, and viscosity. Raman spectroscopy confirmed the presence of SWNT in the resulting fibers, indicating good interaction between DNA and SWNT. The resulting fibers also exhibited electroactive behavior and could be used as an immobilization matrix for a glucose oxidase enzyme biosensor. The sensor response was linear up to 20 mM glucose with a sensitivity of 2.4 mA cm -2 …
Invertebrate Remains From Linaminan, Katherine Szabo
Invertebrate Remains From Linaminan, Katherine Szabo
Katherine A Szabo
No abstract provided.
Molluscan Remains From Fiji, Katherine Szabo
Molluscan Remains From Fiji, Katherine Szabo
Katherine A Szabo
Shell recovered from archaeological sites can give valuable insight to issues of site formation, taphonomy, subsistence, the nature of the environment and environmental change over time. Here, I present a series of shell analyses that can assist in the investigation of several research issues, focusing primarily on ecological issues.
The Loss Of Carbon Dioxide From Activated Perbenzoate Anions In The Gas Phase: Unimolecular Rearrangement Via Epoxidation Of The Benzene Ring, David G. Harman, Aravind Ramachandran, Michelle Gracanin, Stephen J. Blanksby
The Loss Of Carbon Dioxide From Activated Perbenzoate Anions In The Gas Phase: Unimolecular Rearrangement Via Epoxidation Of The Benzene Ring, David G. Harman, Aravind Ramachandran, Michelle Gracanin, Stephen J. Blanksby
Stephen Blanksby
The unimolecular reactivities of a range of perbenzoate anions (X−C6H5CO3-), including the perbenzoate anion itself (X = H), nitroperbenzoates (X = para-, meta-, ortho-NO2), and methoxyperbenzoates (X = para-, meta-OCH3) were investigated in the gas phase by electrospray ionization tandem mass spectrometry. The collision-induced dissociation mass spectra of these compounds reveal product ions consistent with a major loss of carbon dioxide requiring unimolecular rearrangement of the perbenzoate anion prior to fragmentation. Isotopic labeling of the perbenzoate anion supports rearrangement via an initial nucleophilic aromatic substitution at the ortho carbon of the benzene ring, while data from substituted perbenzoates indicate that …
The Major Toxin From The Australian Common Brown Snake Is A Hexamer With Unusual Gas-Phase Dissociation Properties, Andrew Aquilina
The Major Toxin From The Australian Common Brown Snake Is A Hexamer With Unusual Gas-Phase Dissociation Properties, Andrew Aquilina
J. A. Aquilina
Asymmetric dissociation of multiply charged proteins assemblies has been frequently reported. This phenomenon, which relies on the dissociation of one or more highly charged monomers, has been shown to provide insights into the structure and organization of large monodisperse and polydisperse assemblies. Here, the process of asymmetric dissociation is investigated using the multi-subunit protein, textilotoxin, which has unusually high structural constraints on its monomers due to multiple disulfide linkages. Initially, it is shown that, contrary to previous reports, textilotoxin is made up of 6, rather than 5 subunits. Furthermore, the hexamer exists as two isoforms, one of which is substantially …
Fractionation Of Sedimentary Arsenic From Port Kembla Harbour, Nsw, Australia, Glennys A. O'Brien, William E. Price, Bryan E. Chenhall, Muhammad Damris
Fractionation Of Sedimentary Arsenic From Port Kembla Harbour, Nsw, Australia, Glennys A. O'Brien, William E. Price, Bryan E. Chenhall, Muhammad Damris
William E. Price
The binding of arsenic in sediments of the heavily industrialised Port Kembla Harbour, NSW, Australia, has been investigated. Both dredge and core samples have been used to develop a sieving/sequential extraction (SE) procedure. Dredge samples included oxic surficial and deeper anoxic sediment. The main core sample analysed was 18 cm deep, sliced at 2 cm intervals. Sediment was sieved to three size ranges (250 microm) and each of these was then subjected to a four step SE, sequentially solubilizing arsenic as ion exchangeable, 1 M HCl soluble, NH(2)OH.HCl soluble, and strong oxidising acid soluble. Concentrations of 50-500 mg As kg(-1) …
Comparison Of Virulence Gene Profiles Between Escherichia Coli Strains Isolated From Healthy And Diarrheic Swine, Mark Wilson, Karl A Bettelheim, X Y Wu, S Driesen, James Chin, Toni Chapman, I Barchia, D Trott
Comparison Of Virulence Gene Profiles Between Escherichia Coli Strains Isolated From Healthy And Diarrheic Swine, Mark Wilson, Karl A Bettelheim, X Y Wu, S Driesen, James Chin, Toni Chapman, I Barchia, D Trott
Mark R Wilson
No abstract provided.