Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- CMMB (16)
- GeoQUEST (16)
- Australia (8)
- For (7)
- Complex (5)
-
- Effects (5)
- South (5)
- Structure (5)
- Wales (5)
- From (4)
- Ground (4)
- Solar (4)
- West (4)
- Analysis (3)
- Nature (3)
- Synthesis (3)
- 2003 (2)
- Absorption (2)
- Age (2)
- Archaeological (2)
- Arsenic (2)
- Australian (2)
- Barrier (2)
- Based (2)
- Between (2)
- Central (2)
- Climate (2)
- Coastal (2)
- Conditions (2)
- Conducting (2)
Articles 31 - 60 of 89
Full-Text Articles in Physical Sciences and Mathematics
A New Species Of Goodenia (Goodeniaceae) From Nocoleche Nature Reserve, Far Western Plains, New South Wales, Belinda J. Pellow, John L. Potter
A New Species Of Goodenia (Goodeniaceae) From Nocoleche Nature Reserve, Far Western Plains, New South Wales, Belinda J. Pellow, John L. Potter
Faculty of Science - Papers (Archive)
Goodenia nocoleche was cultivated in sediment collected from a freshwater temporary wetland in Nocoleche Nature Reserve. Here it is newly described and illustrated with additional notes on its ecology.
Phytochemical Studies On Stemona Plants: Isolation Of Stemofoline Alkaloids, Thanapat Sastraruji, Araya Jatisatienr, Stephen G. Pyne, Alison T. Ung, Wilford Lie, Morwenna C. Williams
Phytochemical Studies On Stemona Plants: Isolation Of Stemofoline Alkaloids, Thanapat Sastraruji, Araya Jatisatienr, Stephen G. Pyne, Alison T. Ung, Wilford Lie, Morwenna C. Williams
Faculty of Science - Papers (Archive)
Six new stemofoline alkaloids, (2‘R)-hydroxystemofoline (5), (3‘R)-stemofolenol (6), (3‘S)-stemofolenol (7), 1‘,2‘-didehydrostemofoline-N-oxide (8), the first C19 stemofoline alkaloid, methylstemofoline (9), and the first glycosidated Stemona alkaloid, stemofolinoside (10), and three known alkaloids, (2‘S)-hydroxystemofoline (2), (11Z)-1‘,2‘-didehydrostemofoline (3), and (11E)-1‘,2‘-didehydrostemofoline (4), have been isolated from a root extract of an unidentified Stemona species. The structure and relative configuration of these new alkaloids have been determined by spectral data interpretation and …
The History Of Aridity In Australia: Chronological Developments, Ed Rhodes, John Chappell, Toshiyuki Fujioka, Kat Fitzsimmons, John Magee, Max Aubert, Dolan Hewitt
The History Of Aridity In Australia: Chronological Developments, Ed Rhodes, John Chappell, Toshiyuki Fujioka, Kat Fitzsimmons, John Magee, Max Aubert, Dolan Hewitt
Faculty of Science - Papers (Archive)
Desert dune-fields are quintessential features of arid landscapes. During arid phases in the recent geological past, such as the global last glacial maximum (LGM) at around 20,000 years ago, many parts of Australia experienced significant sand movement, with sand migrating down-wind and forming linear dunes. Sand entrainment and deposition is controlled by vegetative surface stabilisation, wind speed and direction, which in turn are controlled by regional climate and local factors including ground-water levels. Climate also affects sand supply, through its effects on erosion in the source areas and transport to the dune-building areas.
'Murphy, Do You Want To Delete This?' Hidden Histories And Hidden Landscapes In The Murchison And Davenport Ranges, Northern Territory, Australia., N. J. Gill, A. Paterson, M. Kennedy
'Murphy, Do You Want To Delete This?' Hidden Histories And Hidden Landscapes In The Murchison And Davenport Ranges, Northern Territory, Australia., N. J. Gill, A. Paterson, M. Kennedy
Faculty of Science - Papers (Archive)
[Extract] During Easter in 2000 we (AP and NG) were in Central Australia during heavy rainfalls and flooding. Roads were cut and we were stuck in Tennant Creek. We decided to review documents held by the local museum. This included material used in the late 1970s to compile a general history of Tennant Creek, the only such work of which we are aware. It was interesting to note that in one case the author had written to a pastoralist they had recently visited, and included a section describing the role of Aboriginal people at their station. In brackets after this …
Beyond Yellowstone? Conservation And Indigenous Rights In Australia And Sweden, Michael Adams
Beyond Yellowstone? Conservation And Indigenous Rights In Australia And Sweden, Michael Adams
Faculty of Science - Papers (Archive)
Faced with the paradox of a large global increase in conservation reserves and a simultaneous global decrease in actual effective protection for biodiversity, conservation scientists and others are questioning established conservation theory and practice. Conservation is largely a ‘residual’ landuse, which often conflicts with another residual landuse, the remaining lands owned or accessed by Indigenous peoples. I argue that the Western conservation model has created this situation, and that engaging with Indigenous ways of relating to ‘nature’ could lead to improved outcomes. From the basis that environmental problems are fundamentally social problems, and using case studies from Australia and Sweden, …
Mobile Polar Highs Over Australia : Origins And Effect On Rainfall, C. Hargraves, Edward A. Bryant
Mobile Polar Highs Over Australia : Origins And Effect On Rainfall, C. Hargraves, Edward A. Bryant
Faculty of Science - Papers (Archive)
Mobile Polar Highs (MPHs) are masses of cold air that move out aperiodically from the Antarctic Icecap and eventually cross Australia. Their movement from the Weddell Sea and the Lambert Glacier was monitored between 26 March and 20 July 2004 using daily satellite images and synoptic charts. Their leading edge appears on these images as a distinct arced cloudband. The patterns of MPHs were then linked to significant rainfall events—>50 mm in 24 hrs—in southeastern Australia. Although most of this area of Australia was in drought over the study period, three major rainfall events resulted from the passage of …
Planning For Natural Hazards — How Can We Mitigate The Impacts?, Edward A. Bryant, Lesley M. Head, J. Morrison
Planning For Natural Hazards — How Can We Mitigate The Impacts?, Edward A. Bryant, Lesley M. Head, J. Morrison
Faculty of Science - Papers (Archive)
Australia has the same frequency of natural hazards as any other continent; however, the types and impact of hazards are very different. Globally, the deadliest hazards are floods, earthquakes, tropical storms and tsunami. In Australia, the deadliest hazards are heat waves, floods, tropical cyclones and bushfires. Similarly, while the most expensive hazards ranked globally are also floods, earthquakes and tropical cyclones, in Australia, the costliest hazards are tropical storms, floods, wind and bushfires. Our isolated population distribution, together with rugged topography along the eastern and southern coastal fringe where the bulk of the population is concentrated, has lead to a …
Factors Affecting Metal Releases From Contaminated Marine Sediments, Dianne F. Jolley, Clare A. Atkinson, Stuart L. Simpson
Factors Affecting Metal Releases From Contaminated Marine Sediments, Dianne F. Jolley, Clare A. Atkinson, Stuart L. Simpson
Faculty of Science - Papers (Archive)
In aquatic environments, the depth of oxygen penetration into sediment depends on sediment texture, porosity, permeability and the extent of biological (e.g., bioturbation) and physical (e.g., wave action) processes. Below the oxygen penetration depth (generally 10 mm) anoxic conditions prevail and bacteria use other oxidants such as iron and manganese oxides and sulfate to breakdown organic matter. The bacteria-catalysed reduction of sulfate releases hydrogen sulfide according to Equation 1. The release of H2S into the pore waters SO42- + bacteria → H2S (Equation 1).
The Effects Of Continuous And Fluctuating Copper Exposures On The Marine Alga Phaeodactylum Tricornutum, Brad Angel, Stuart L. Simpson, Jenny L. Stauber, Dianne Jolley
The Effects Of Continuous And Fluctuating Copper Exposures On The Marine Alga Phaeodactylum Tricornutum, Brad Angel, Stuart L. Simpson, Jenny L. Stauber, Dianne Jolley
Faculty of Science - Papers (Archive)
Contaminant concentrations in aquatic systems are seldom constant. Erratic inputs such as industrial discharges, rain water flushing, and random spills may cause concentrations to increase rapidly. Environmental processes may contribute through the dispersive actions of tides and currents, adsorptive losses to or release from resuspended sediments, and contaminant losses due to photo-degradation and volatilization. Despite such variability in contaminant concentrations, environmental guidelines are derived from toxicity test data using continuous exposure, where contaminant concentrations at the beginning of the exposure are assumed to remain relatively constant over the test duration. Responses of organisms exposed to fluctuating contaminant concentrations may differ …
Aboriginal Pastoralism, Social Embeddedness And Cultural Continuity In Central Australia, Nicholas J. Gill
Aboriginal Pastoralism, Social Embeddedness And Cultural Continuity In Central Australia, Nicholas J. Gill
Faculty of Science - Papers (Archive)
Aboriginal people are involved in pastoral enterprises throughout the inland and north of Australia. This has generated difficulties as landowners and policymakers struggled with conflicts between Aboriginal social structures and the demands of running commercial businesses. Problems often arose due to imposition of nonindigenous norms regarding land use. It has been suggested that pastoralism can generate social and cultural benefits for Aboriginal landowners, but these have not been investigated in any detail. Drawing on the concept of social embeddedness and fieldwork with Aboriginal pastoralists, this article identifies, describes, and ranks sociocultural benefits arising from Aboriginal pastoralism. Pastoralism fulfilled uniquely Aboriginal …
Improvement In The Inland: Culture And Nature In The Australian Rangelands, Nicholas J. Gill, K. Anderson
Improvement In The Inland: Culture And Nature In The Australian Rangelands, Nicholas J. Gill, K. Anderson
Faculty of Science - Papers (Archive)
Few practices were as intimately implicated in effecting the extension of British selves and surfaces to the colonies of Australia, as agricultural and pastoral pursuits. Said Governor Arthur Phillip, soon after the founding of New South Wales: 'There are few things more pleasing than the contemplation of order and useful arrangement on the land arising gradually out of tumult and confusion; and perhaps this satisfaction cannot anywhere be more fully enjoyed than where a settlement of civilised people is fixing itself upon a newly discovered and savage coast' (Phillips, 1789, p.122). Over the course of the subsequent century, the enactment …
Resurveys Of The Eastern Bristlebird (Dasyornis) In Central-Eastern New South Wales, 1999-2001:Their Relationship With Fire And Observer Competence, David Bain, Narelle Mcphee
Resurveys Of The Eastern Bristlebird (Dasyornis) In Central-Eastern New South Wales, 1999-2001:Their Relationship With Fire And Observer Competence, David Bain, Narelle Mcphee
Faculty of Science - Papers (Archive)
The endangered Eastern Bristlebird Dasyornis brachypterus is found in-a number of small isolated populations along the east coast of Australia. Presently little is known about the status and viability of many of these populations. Surveys for Eastern Bristlebirds were conducted at Red Rocks Nature Reserve, around Jervis Bay near Huskisson and on Beecroft Peninsula, and at Ku-ring-gai Chase National Park in south-eastern New South Wales to compare these data with historical records and to investigate more recent unconfirmed sightings of the species. Eastern Bristlebirds were resurveyed at Barren Grounds Nature Reserve, using the same sites as a previous long-term study …
New Integron-Associated Gene Cassette Encoding A 3-N-Aminoglycoside Acetyltransferase, Renee Levings, S. R. Partridge, Diane Lightfoot, Ruth M. Hall, Steven P. Djordjevic
New Integron-Associated Gene Cassette Encoding A 3-N-Aminoglycoside Acetyltransferase, Renee Levings, S. R. Partridge, Diane Lightfoot, Ruth M. Hall, Steven P. Djordjevic
Faculty of Science - Papers (Archive)
A fifth gene cassette containing an aacC gene, aacCA5, was found in an aacCA5-aadA7 cassette array in a class 1 integron isolated from a multiply drug resistantSalmonella enterica serovar Kentucky strain. The AacC-A5 or AAC(3)-Ie acetyltransferase encoded by aacCA5 is related to other AAC(3)-I enzymes and confers resistance to gentamicin.
Purification, Crystallization And Preliminary Crystallographic Analysis Of Dehiva, A Dehalogenase From Burkholderia Cepacia Mba4, Jason Schmidberger, Aaron Oakley, Jimmy Tsang, Matthew Wilce
Purification, Crystallization And Preliminary Crystallographic Analysis Of Dehiva, A Dehalogenase From Burkholderia Cepacia Mba4, Jason Schmidberger, Aaron Oakley, Jimmy Tsang, Matthew Wilce
Faculty of Science - Papers (Archive)
No abstract provided.
The Genomic Island Sgii, Containing The Multiple Antibiotic Resistance Region Of Salmonella Enterica Serovar Typhimurium Dt104 Or Variants Of It, Is Widely Distributed In Other S-Enterica Serovars, Renee Levings, Diane Lightfoot, Sally R. Partridge, Ruth M. Hall, Steven P. Djordjevic
The Genomic Island Sgii, Containing The Multiple Antibiotic Resistance Region Of Salmonella Enterica Serovar Typhimurium Dt104 Or Variants Of It, Is Widely Distributed In Other S-Enterica Serovars, Renee Levings, Diane Lightfoot, Sally R. Partridge, Ruth M. Hall, Steven P. Djordjevic
Faculty of Science - Papers (Archive)
The global dissemination of the multiply-antibiotic-resistant Salmonella entericaserovar Typhimurium DT104 clone with the resistance genes located in a class 1 integron, here designated In104, within genomic island SGI1 is a significant public health issue. Here, we have shown that SGI1 and variants of it carrying different combinations of resistance genes are found in several Salmonella enterica serovars. These are serovars Cerro, Derby, Dusseldorf, Infantis, Kiambu, and Paratyphi B dT+ isolated from human infections and serovar Emek from sewage effluent. Two new variants, SGI1-I and SGI1-J, both of which include thedfrA1-orfC cassette array, were identified.
Different Fouling Modes Of Submerged Hollow-Fiber And Flat-Sheet Membranes Induced By High Strength Wastewater With Concurrent Biofouling, Faisal I. Hai, Kazuo Yamamoto, Kensuke Fukushi
Different Fouling Modes Of Submerged Hollow-Fiber And Flat-Sheet Membranes Induced By High Strength Wastewater With Concurrent Biofouling, Faisal I. Hai, Kazuo Yamamoto, Kensuke Fukushi
Faculty of Science - Papers (Archive)
Exploration of two major commercialized flat-sheet and hollow-fiber membranes in a submerged membrane fungi reactor fed with a synthetic textile wastewater revealed striking differences in the extent and mechanism of fouling between the two types, indicating a case-specific scope of choice between the two for industrial wastewater treatment. The hollow-fiber membrane exhibited fouling with a cake layer composed of fungi and starch, intensity being proportional to the operating flux (0.05–0.3 m/d). Conversely, the flat-sheet membrane suffered from immediate internal pore blocking beyond a critical flux of 0.2 m/d. During the experiment with major constituents of the synthetic wastewater separately, while …
Latitude And Altitude Variability Of Carbon Monoxide In The Atlantic Detected From Ship-Borne Fourier Transform Spectrometry, Model, And Satellite Data, Voltaire A. Velazco, Justus Notholt, Thorsten Warneke, Mark Lawrence, Holger Bremer, James Drummond, Astrid Schulz, Jurgen Krieg, O. Schrems
Latitude And Altitude Variability Of Carbon Monoxide In The Atlantic Detected From Ship-Borne Fourier Transform Spectrometry, Model, And Satellite Data, Voltaire A. Velazco, Justus Notholt, Thorsten Warneke, Mark Lawrence, Holger Bremer, James Drummond, Astrid Schulz, Jurgen Krieg, O. Schrems
Faculty of Science - Papers (Archive)
Carbon monoxide (CO) volume mixing ratio (VMR) profiles have been retrieved from ship-borne solar absorption spectra recorded in the Atlantic between 80°N and 70°S. CO profiles can be retrieved up to 30 km with a maximum altitude resolution of 4 km for a few layers. CO enhancements due to biomass burning have been detected. Recurring enhancements of CO were detected in the upper troposphere (10–15 km) in the equatorial regions and in the southern Atlantic (20°S–30°S). These enhancements could be traced back to African biomass burning sources as well as sources as far as South America. Similar results are observed …
Seasonal And Latitudinal Variations Of Column Averaged Volume-Mixing Ratios Of Atmospheric Co2, T. Warneke, Z. Yang, S. Olsen, S. Korner, J. Notholt, G. Toon, Voltaire A. Velazco, A. Schulz, O. Schrems
Seasonal And Latitudinal Variations Of Column Averaged Volume-Mixing Ratios Of Atmospheric Co2, T. Warneke, Z. Yang, S. Olsen, S. Korner, J. Notholt, G. Toon, Voltaire A. Velazco, A. Schulz, O. Schrems
Faculty of Science - Papers (Archive)
Column-averaged volume mixing ratios of CO2 have been obtained by ground based high-resolution solar absorption spectrometry at Ny-Alesund (Spitsbergen, 79°N) in 20022003 and during two ship cruises (54°N34°S) on the Atlantic in 2003. Precisions are better than 0.4% at Ny-Alesund and better than 0.6% for the cruises. The observed 11 ppmv (part per million by volume) seasonal amplitude of the CO2 column at Ny-Alesund is about 5 ppmv smaller than surface in situ data and 24 ppmv greater than model-predictions. The latitudinal gradient of column CO2 inferred from shipborne measurements is less than 2 ppmv in Oct/Nov 2003. During the …
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
Faculty of Science - Papers (Archive)
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) …
Autopolymerization Of Pyrrole In The Presence Of A Host/Guest Calixarene, David A. Reece, Jennifer M. Pringle, Stephen F. Ralph, Gordon G. Wallace
Autopolymerization Of Pyrrole In The Presence Of A Host/Guest Calixarene, David A. Reece, Jennifer M. Pringle, Stephen F. Ralph, Gordon G. Wallace
Faculty of Science - Papers (Archive)
Aqueous solutions containing pyrrole and calix-6-arenehexasulfonic acid were found to undergo polymerization in the absence of either a chemical oxidant or electrochemical oxidation. The product was an unstable colloidal suspension consisting of spherical polypyrrole particles measuring ≥500 nm in diameter. Conductivity measurements showed the material to be insulating, while cyclic voltammetry studies demonstrated that it was electroactive. Infrared spectroscopy and microanalysis confirmed that the polypyrrole produced was doped with calix-6-arenehexasulfonic acid. When the reaction was repeated using solutions containing stabilizing agents, stable colloidal dispersions were obtained. These were shown by both particle size analysis and transmission electron microscopy to contain …
Surface Analyses And Immune Reactivities Of Major Cell Wall-Associated Proteins Of Group A Streptococcus, J. N. Cole, R. D. Ramirez, B. J. Currie, S. J. Cordwell, S. P. Djordjevic, Mark J. Walker
Surface Analyses And Immune Reactivities Of Major Cell Wall-Associated Proteins Of Group A Streptococcus, J. N. Cole, R. D. Ramirez, B. J. Currie, S. J. Cordwell, S. P. Djordjevic, Mark J. Walker
Faculty of Science - Papers (Archive)
A proteomic analysis was undertaken to identify cell-wall associated proteins of Streptococcus pyogenes. Seventy-four distinct cell-wall associated proteins were identified, 66 of which were novel. Thirty-three proteins were immunoreactive with pooled S. pyogenes-reactive human antisera. Biotinylation of the GAS cell-surface identified 23 cellwall associated proteins that are surface exposed.
A Convenient And Efficient Synthesis Of (S)-Lysine And (S)-Arginine Homologues Via Olefin Cross-Metathesis, Timothy P. Boyle, John B. Bremner, Jonathan A. Coates, Paul A. Keller, Stephen G. Pyne
A Convenient And Efficient Synthesis Of (S)-Lysine And (S)-Arginine Homologues Via Olefin Cross-Metathesis, Timothy P. Boyle, John B. Bremner, Jonathan A. Coates, Paul A. Keller, Stephen G. Pyne
Faculty of Science - Papers (Archive)
A convenient five step synthesis of (S)-homolysine, incorporating a key olefin cross-metathesis step in the chain extension methodology, has been developed, together with a six step related synthesis of a new homologue of arginine, (S)-bishomoarginine.
A Study On Solid Waste Management System Of Dhaka City Corporation: Effect Of Composting And Landfill Location, Faisal Ibney Hai, M. Ashraf Ali
A Study On Solid Waste Management System Of Dhaka City Corporation: Effect Of Composting And Landfill Location, Faisal Ibney Hai, M. Ashraf Ali
Faculty of Science - Papers (Archive)
This study has analyzed the generation and characteristics of solid waste in Dhaka city, along with the associated environmental impacts and existing solid waste management practices. Special focus was given on the effect of composting on final disposal of solid waste and effect of landfill site location on transportation cost. An estimate of the future generation rate indicates that the present generation rate of 3500 tons/day may exceed 30 thousand tons/day by the year 2020.The mixed waste dumped at dumping sites is characterized with high organic content and high moisture content (about 80% and 50-70% by weight, respectively). According to …
Development Of Watershed Management In New South Wales, Australia: A Coastal Perspective, Pedro I. J Fidelman, Robert John Morrison, Ron J. West
Development Of Watershed Management In New South Wales, Australia: A Coastal Perspective, Pedro I. J Fidelman, Robert John Morrison, Ron J. West
Faculty of Science - Papers (Archive)
Watershed management has become a prominent approach to natural resource management (NRM) in Australia and elsewhere. In the Australian State ofNew South Wales (NSW), catchment management - the NSW watershed management initiative - has been in place both in coastal and non-coastal areas for nearly two decades. In coastal areas, it is suggested that catchment management could play an important role in coastal and marine issues (NSW Coastcare et aI., 2004; Zann, 1996), as the Australia's coastal and marine environments have, in general, been affected by watershed-based activities (see e.g., Zann, 1996). Such a role would, however, require institutional changes, …
New Pieces To The Archaean Terrane Jigsaw Puzzle In The Nuuk Region, Southern West Greeland: Steps In Transforming A Simple Insight Into A Complex Regional Tectonothermal Model, Clark R L Friend, Allen Phillip Nutman
New Pieces To The Archaean Terrane Jigsaw Puzzle In The Nuuk Region, Southern West Greeland: Steps In Transforming A Simple Insight Into A Complex Regional Tectonothermal Model, Clark R L Friend, Allen Phillip Nutman
Faculty of Science - Papers (Archive)
In the south of the Nuuk region of West Greenland our 1980s mapping recognized four Archaean gneiss terranes (Færingehavn, Tre Brødre, Tasiusarsuaq and Akia terranes) with different protolith ages and separate early tectonothermal histories. Later in the Archaean these were juxtaposed and then experienced the same 2700-2500 Ma tectonothermal events. Here we abandon extrapolation of only these four terranes across the whole region, and distinguish two new terranes in the NE. The northernmost Isukasia terrane (previously regarded as the northernmost exposure of the Færingehavn terrane) consists of Palaeoarchaean rocks (>3600 Ma) tectonically bounded on its south by the 3075-2960 …
Complex 3670-3500 Ma Orogenic Episodes Superimposed On Juvenile Crust Accreted Between 3850 And 3690 Ma, Itsaq Gneiss Complex, Southern West Greenland, Clark R L Friend, Allen Phillip Nutman
Complex 3670-3500 Ma Orogenic Episodes Superimposed On Juvenile Crust Accreted Between 3850 And 3690 Ma, Itsaq Gneiss Complex, Southern West Greenland, Clark R L Friend, Allen Phillip Nutman
Faculty of Science - Papers (Archive)
The Itsaq Gneiss Complex of the Nuuk region, southern West Greenland, is dominated by 3850-3690 Ma tonalites intruded into and intercalated with lesser amounts of different ≥3850-3700 Ma supracrustal units. Published wholerock Sr and Nd isotopic studies demonstrate that the tonalites are juvenile crustal additions from a depleted mantle source. From our field studies and SHRIMP U/Pb zircon dating, we argue that this juvenile crustal accretion was spread over ca. 170 m.yr. (≥3850-3690 Ma). Following 3850-3690 Ma juvenile crustal accretion events, the evolution of the Itsaq Gneiss Complex continued with numerous crustal-reworking events between 3670 and 3500 Ma. Examples of …
Age, Petrogenesis And Metamorphism Of The Syn-Collisional Proven Igneous Complex, West Greenland, Kristine Thrane, J Baker, J Connelly, Allen Phillip Nutman
Age, Petrogenesis And Metamorphism Of The Syn-Collisional Proven Igneous Complex, West Greenland, Kristine Thrane, J Baker, J Connelly, Allen Phillip Nutman
Faculty of Science - Papers (Archive)
The Paleoproterozoic Prøven Igneous Complex (PIC) in West Greenland extends from ca. 72°15′ to 73°10′N, approximately 500 km north of the subduction-related intrusive complex in the core of the +1100 km wide, asymmetric collisional Nagssugtoqidian-Rinkian Orogen. A new U-Pb SHRIMP age for the PIC of 1869±9 Ma indicates that it intruded synchronously with the main collisional phase of the orogen into the passive margin side of the collision. Sm-Nd and Lu-Hf isotopic and A-type geochemical signatures are compatible with its derivation from melted Archean lower crustal material contaminated to varying degrees by pelitic sedimentary rocks of the Karrat Group. The …
Metasedimentary Complexes Of The Tuva-Mongolian Massif: Age, Provenances And Tectonic Position, I K Kozakov, E B Sal'nikova, Allen Phillip Nutman, V P Kovach, A B Kotov, V N Podkovyrov, Yu V Plotkina
Metasedimentary Complexes Of The Tuva-Mongolian Massif: Age, Provenances And Tectonic Position, I K Kozakov, E B Sal'nikova, Allen Phillip Nutman, V P Kovach, A B Kotov, V N Podkovyrov, Yu V Plotkina
Faculty of Science - Papers (Archive)
A complex problem of dating supracrustal rocks is unavoidable by analysis of tectonic position of polymetamorphic amphibolite and granulite complexes. Geochronological dates are necessary to constrain ages of source rocks and accumulation periods of clastic sediments, while isotopic-geochemical parameters open a possibility to estimate model ages of the crust in provenances. Using the ion microprobe SHRIMPTM (Hiroshima, Japan), clastic zircons from metasediments of the Erzin and Moren complexes of the Tuva-Mongolian massif in accretionary collage of Central Asia are dated and the Nd model age of respective rocks are estimated. The U-Th-Pb isotopic data suggest that clastic zircons from supracrustal …
The Epididymal Soluble Prion Protein Forms A High-Molecular-Mass Complex In Association With Hydrophobic Proteins, Heath W. Ecroyd, Maya Belghazi, Jean-Louis Dacheux, Jean-Luc Gatti
The Epididymal Soluble Prion Protein Forms A High-Molecular-Mass Complex In Association With Hydrophobic Proteins, Heath W. Ecroyd, Maya Belghazi, Jean-Louis Dacheux, Jean-Luc Gatti
Faculty of Science - Papers (Archive)
We have shown previously that a 'soluble' form of PrP (prion protein), not associated with membranous vesicles, exists in the male reproductive fluid [Ecroyd, Sarradin, Dacheux and Gatti (2004) Biol. Reprod. 71, 993-1001]. Attempts to purify this 'soluble' PrP indicated that it behaves like a high-molecular-mass complex of more than 350 kDa and always co-purified with the same set of proteins. The main associated proteins were sequenced by MS and were found to match to clusterin (apolipoprotein J), BPI (bacterial permeability-increasing protein), carboxylesterase-like urinary excreted protein (cauxin), beta-mannosidase and beta-galactosidase. Immunoblotting and enzymatic assay confirmed the presence of clusterin and …
Slag, Steel And Swamp: Perceptions Of Restoration Of An Urban Coastal Saltmarsh, Nicholas J. Gill
Slag, Steel And Swamp: Perceptions Of Restoration Of An Urban Coastal Saltmarsh, Nicholas J. Gill
Faculty of Science - Papers (Archive)
A community group, in conjunction with local government and industry, has been working on aquatic and terrestrial restoration at a Wollongong saltmarsh, previously diminished in size and degraded by harbour reclamation and an urban rubbish tip. Students evaluate restoration progress to date and devise some interesting potential directions.