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2006

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Articles 8461 - 8490 of 10745

Full-Text Articles in Social and Behavioral Sciences

Differentiation Of Bone Marrow Stem Cells On Inkjet Printed Silk Lines, Skander Limem, Paul Calvert, Hyeon Joo Kim, David L. Kaplan Jan 2006

Differentiation Of Bone Marrow Stem Cells On Inkjet Printed Silk Lines, Skander Limem, Paul Calvert, Hyeon Joo Kim, David L. Kaplan

Faculty of Science, Medicine and Health - Papers: part A

Water based silk solutions were successfully inkjet printed for the first time into patterns of parallel lines onto vinyl plastic substrates. Human bone marrow stromal cells (hMSCs) were seeded on the silk printed patterns and cultured in the presence of 100 ng/ml of bone morphogenic protein (BMP-2). After one week of culture cell growth and attachment showed site specificity on the silk printed lines. Both alkaline phosphatase activity and cell morphology indicated hBMSCs differentiation into osteogenic cells along the silk printed lines. After 4 week of culture, the cellular bridging of adjacent silk printed lines took place for all interline …

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Structure Of The Theta Subunit Of Escherichia Coli Dna Polymerase Iii In Complex With The Epsilon Subunit, Max A Keniry, Ah-Young Park, Elisabeth A. Owen, Samir M. Hamdan, Guido Pintacuda, Gottfried Otting, Nicholas E. Dixon Jan 2006

Structure Of The Theta Subunit Of Escherichia Coli Dna Polymerase Iii In Complex With The Epsilon Subunit, Max A Keniry, Ah-Young Park, Elisabeth A. Owen, Samir M. Hamdan, Guido Pintacuda, Gottfried Otting, Nicholas E. Dixon

Faculty of Science, Medicine and Health - Papers: part A

The catalytic core of Escherichia coli DNA polymerase III contains three tightly associated subunits, the α, ε, and θ subunits. The θ subunit is the smallest and least understood subunit. The three-dimensional structure of θ in a complex with the unlabeled N-terminal domain of the ε subunit, ε186, was determined by multidimensional nuclear magnetic resonance spectroscopy. The structure was refined using pseudocontact shifts that resulted from inserting a lanthanide ion (Dy3+, Er3+, or Ho3+) at the active site of ε186. The structure determination revealed a three-helix bundle fold that is similar to the solution …

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Ling, A New Integron-Associated Gene Cassette Encoding A Lincosamide Nucleotidyltransferase, Renee S. Levings, Ruth M. Hall, Diane Lightfoot, Steven P. Djordjevic Jan 2006

Ling, A New Integron-Associated Gene Cassette Encoding A Lincosamide Nucleotidyltransferase, Renee S. Levings, Ruth M. Hall, Diane Lightfoot, Steven P. Djordjevic

Faculty of Science, Medicine and Health - Papers: part A

Lincosamide antibiotics include lincomycin, a compound produced by several actinomycetes, and its semisynthetic chlorinated derivative clindamycin. These antibiotics block the peptidyltransferase activity of the 50S subunit of the bacterial ribosome, inhibiting protein synthesis, and are active against most gram-positive cocci and anaerobes. However, they are not generally effective against gram-negative bacilli due to intrinsic resistance.

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The Impact Of Institutional Surveillance Technologies On Student Behaviour, Shane Dawson Jan 2006

The Impact Of Institutional Surveillance Technologies On Student Behaviour, Shane Dawson

Faculty of Science, Medicine and Health - Papers: part A

Contemporary education institutions are increasingly investing fiscal and human resources to further develop their online infrastructure in order to enhance flexible learning options and the overall student learning experience. Coinciding with the implementation of these technologies has been the centralisation of data and the emergence of online activities that have afforded the capacity for more intimate modes of surveillance by both the institution and education practitioner. This study offers an initial investigation into the impact of such modes of surveillance on student behaviours. Both internal and external students surveyed indicated that their browsing behaviours, the range of topics discussed and …

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Observation Of Nondegenerate Cavity Modes For A Distorted Cavity Modes For A Distorted Polystyrene Microsphere, Adam J. Trevitt, Philip J. Wearne, Evan J. Bieske, Michael D. Schuder Jan 2006

Observation Of Nondegenerate Cavity Modes For A Distorted Cavity Modes For A Distorted Polystyrene Microsphere, Adam J. Trevitt, Philip J. Wearne, Evan J. Bieske, Michael D. Schuder

Faculty of Science, Medicine and Health - Papers: part A

Nondegenerate azimuthal morphology-dependent resonances are observed for a distorted, fluorescently labeled polystyrene microsphere levitated in a quadrupole ion trap. Modeling the individual resonances by using perturbation theory allows a determination of quadrupole and octupole distortion parameters. The particle’s shape changes slowly over the course of the measurement and eventually becomes spherical. The morphological changes are facilitated by laser heating of the particle above the polystyrene glass transition temperature. We demonstrate a method of transforming a trapped particle to a sphere and rendering its azimuthal modes degenerate.

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Tracing The Geographic Origin Of The Cosmopolitan Parthenogenetic Insect Pest Liposcelis Bostrychophila (Psocoptera: Liposcelididae), K M. Mikac, G M. Clarke Jan 2006

Tracing The Geographic Origin Of The Cosmopolitan Parthenogenetic Insect Pest Liposcelis Bostrychophila (Psocoptera: Liposcelididae), K M. Mikac, G M. Clarke

Faculty of Science, Medicine and Health - Papers: part A

The randomly amplified polymorphic DNA technique was used to trace the geographic origin of Liposcelis bostrychophila Badonnel populations in Australia from unknown geographic sources internationally. Haplotype (or clonal) diversity was high, with 474 unique haplotypes found from 616 individuals genotyped. Gene diversity estimates (0.10–0.28) and percent polymorphic loci (38.1–88.1%) were moderate to high for most populations. This resulted in genetic distance estimates that ranged from 0.04 to 0.26 and were significantly different for most pairwise population combinations. G ST values for all populations were also moderate (0.04–0.54) and again were significantly different for most pairwise population comparisons. Analysis of molecular …

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Surface Process Models And The Links Between Tectonics And Topography, Alexandru T. Codilean, Paul Bishop, Trevor B. Hoey Jan 2006

Surface Process Models And The Links Between Tectonics And Topography, Alexandru T. Codilean, Paul Bishop, Trevor B. Hoey

Faculty of Science, Medicine and Health - Papers: part A

Advances in the theoretical understanding of large-scale tectonic and surface processes, along with a rapid growth of computing technology, have stimulated interest in the use of numerical surface process models (SPMs) of long-term landscape evolution, especially in relation to the links between tectonics and topography. Because of these advances and possibilities and because SPMs continue to play an important part in recent geological, geomorphological, thermochronological and other geosciences research, the models warrant review and assessment. This review summarizes and evaluates the important issues concerning SPMs of long-term landscape evolution that have been addressed only in a passing way by previous …

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Nosocomial And Community Transmission Of Measles Virus Genotype D8 Imported By A Returning Traveller From Nepal, Kathryn M. Weston, Dominic Dwyer, Mala Ratnamohan, Kenneth Mcphie, Sau-Wan Chan, James Branley, Lisa Allchin, Krishna Hort Jan 2006

Nosocomial And Community Transmission Of Measles Virus Genotype D8 Imported By A Returning Traveller From Nepal, Kathryn M. Weston, Dominic Dwyer, Mala Ratnamohan, Kenneth Mcphie, Sau-Wan Chan, James Branley, Lisa Allchin, Krishna Hort

Faculty of Science, Medicine and Health - Papers: part A

Measles is uncommon in Australia due to effective national vaccination strategies. In mid-2003, a cluster of nine cases of measles occurred in western Sydney. The index case was a 29-year-old traveller recently returned from Nepal. The case presented to hospital and transmitted the disease to two others in the Emergency Department. Further cases resulted from both community and nosocomial transmission. The median age of cases was 24 years, with three cases in children aged under four years. Only one person had a documented history of measles vaccination, a child who had received one dose of vaccine overseas. One case was …

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Beyond The Rhetoric: What Do We Mean By A 'Model Of Care'?, Patricia Davidson, Elizabeth Halcomb, L Hickman, J Phillips, B Graham Jan 2006

Beyond The Rhetoric: What Do We Mean By A 'Model Of Care'?, Patricia Davidson, Elizabeth Halcomb, L Hickman, J Phillips, B Graham

Faculty of Science, Medicine and Health - Papers: part A

Background: Contemporary health care systems are constantly challenged to revise traditional methods of health care delivery. These challenges are multifaceted and stem from: (1) novel pharmacological and non-pharmacological treatments; (2) changes in consumer demands and expectations; (3) fiscal and resource constraints; (4) changes in societal demographics in particular the ageing of society; (5) an increasing burden of chronic disease; (6) documentation of limitations in traditional health care delivery; (7) increased emphasis on transparency, accountability, evidence-based practice (EBP) and clinical governance structures; and (8) the increasing cultural diversity of the community. These challenges provoke discussion of potential alternative models of care, …

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Investigation Of Large-Scale Washover Of A Small Barrier System On The Southeast Australian Coast Using Ground Penetrating Radar, Brian G. Jones, C Bristow, Adam D. Switzer Jan 2006

Investigation Of Large-Scale Washover Of A Small Barrier System On The Southeast Australian Coast Using Ground Penetrating Radar, Brian G. Jones, C Bristow, Adam D. Switzer

Faculty of Science - Papers (Archive)

Prehistoric depositional signatures for large-scale washover involving marine inundation events such as storm and tsunami have been the subject of considerable research over the last 15 years. Much of this research has focused on the identification of sand sheets in back-barrier environments as depositional records for extreme washover events. All these deposits must have a sediment source, and by their nature, the most likely source of sediment for washover into back-barrier environments is the barrier itself. This study identifies an erosional signature for large-scale washover from a small coastal barrier on the southeast Australian coast. A distinct lense of marine …

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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 Jan 2006

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

Faculty of Science - Papers (Archive)

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 …

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Places Of Reconciliation: Gay, Lesbian And Transgender Place-Based Belongings In A Regional Australian Centre, Gordon R. Waitt, Andrew W. Gorman-Murray Jan 2006

Places Of Reconciliation: Gay, Lesbian And Transgender Place-Based Belongings In A Regional Australian Centre, Gordon R. Waitt, Andrew W. Gorman-Murray

Faculty of Science - Papers (Archive)

Place-based belonging is a key concern of geographical work on sexuality. Marginalised through practices of heterosexism and homophobia, gay men, lesbians and other sexual minorities have a heightened awareness of where they belong – of where they can perform sexual difference. Much research here focuses on place-based belonging in metropolitan centres. There is less consideration of how sexual minorities sustain place-based belonging in regional centres, which are also believed to exhibit higher levels of homophobia. Drawing on in-depth interviews, we examine how sexual minorities generate place-based belonging in Townsville. We argue that place-based belonging be understood as an ongoing relational …

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Evidence From Mitochondrial Genomics On Interordinal Relationships In Insects, Stephen L. Cameron, Andrew T. Beckenbach, Mark P. Dowton, Michael F. Whiting Jan 2006

Evidence From Mitochondrial Genomics On Interordinal Relationships In Insects, Stephen L. Cameron, Andrew T. Beckenbach, Mark P. Dowton, Michael F. Whiting

Faculty of Science - Papers (Archive)

No abstract provided.

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Comparison Of Virulence Gene Profiles Between Escherichia Coli Strains Isolated From Healthy And Diarrheic Swine, Mark R. Wilson, Xi Yang Wu, Idris Barchia, Karl A Bettelheim, Steven Driesen, Darren J. Trott, Toni A. Chapman, James J C Chin Jan 2006

Comparison Of Virulence Gene Profiles Between Escherichia Coli Strains Isolated From Healthy And Diarrheic Swine, Mark R. Wilson, Xi Yang Wu, Idris Barchia, Karl A Bettelheim, Steven Driesen, Darren J. Trott, Toni A. Chapman, James J C Chin

Faculty of Science - Papers (Archive)

A combination of uni- and multiplex PCR assays targeting 58 virulence genes (VGs) associated with Escherichia coli strains causing intestinal and extraintestinal disease in humans and other mammals was used to analyze the VG repertoire of 23 commensal E. coli isolates from healthy pigs and 52 clinical isolates associated with porcine neonatal diarrhea (ND) and postweaning diarrhea (PWD). The relationship between the presence and absence of VGs was interrogated using three statistical methods. According to the generalized linear model, 17 of 58 VGs were found to be significant (P < 0.05) in distinguishing between commensal and clinical isolates. Nine of the 17 genes represented by iha, hlyA, aidA, east1, aah, fimH, iroN(E. coli), traT, and saa have not been previously identified as important VGs in clinical porcine isolates in Australia. The remaining eight VGs code for fimbriae (F4, F5, F18, and F41) and toxins (STa, STb, LT, and Stx2), normally associated with porcine enterotoxigenic E. coli. Agglomerative hierarchical algorithm analysis grouped E. coli strains into subclusters based primarily on their serogroup. Multivariate analyses of clonal relationships based on the 17 VGs were collapsed into two-dimensional space by principal coordinate analysis. PWD clones were distributed in two quadrants, separated from ND and commensal clones, which tended to cluster within one quadrant. Clonal subclusters within quadrants were highly correlated with serogroups. These methods of analysis provide different perspectives in our attempts to understand how commensal and clinical porcine enterotoxigenic E. coli strains have evolved and are engaged in the dynamic process of losing or acquiring VGs within the pig population.

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First Detection Of Meso-Thermospheric Nitric Oxide (No) By Ground-Based Ftir Solar Absorption Spectroscopy, Aldona Wiacek, Nicholas B. Jones, K Strong, J R. Taylor, Richard L. Mittermeier, Hans Fast Jan 2006

First Detection Of Meso-Thermospheric Nitric Oxide (No) By Ground-Based Ftir Solar Absorption Spectroscopy, Aldona Wiacek, Nicholas B. Jones, K Strong, J R. Taylor, Richard L. Mittermeier, Hans Fast

Faculty of Science - Papers (Archive)

We report the first detection of mesospheric-lower thermospheric (MLT, 50–130 km) NO from ground-based FTIR solar absorption spectra using Lorentz- and Doppler-broadened solar absorption lines in the stratosphere and in the MLT, respectively. We present the first characterization of vertical sensitivity in the FTIR NO retrieval and show that MLT NO partial columns can be retrieved with ~1 independent piece of information using a climatological NO profile extending up to 130 km. The information content analysis also improves the characterization of stratospheric partial column retrievals and is relevant to NO results obtained at other Network for the Detection of Stratospheric …

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Novel Polycyclic Diels-Alder Adducts From Ring Distorted 3-Aza[5] And 3-Aza[6] (1,7) Napthalenophanes, John B. Bremner, Wasna Jaturonusmee Jan 2006

Novel Polycyclic Diels-Alder Adducts From Ring Distorted 3-Aza[5] And 3-Aza[6] (1,7) Napthalenophanes, John B. Bremner, Wasna Jaturonusmee

Faculty of Science - Papers (Archive)

Ring distorted 3-aza[5] and 3-aza[6](1,7)naphthalenophanes have been shown to undergo ready Diels-Alder cycloaddition reactions with 4-phenyl-1,2,4-triazoline-3,5-dione, tetracyanoethylene, 1,1-dicyanoethylene and 1,1-diethyl methylenemalonate to form new functionalized polycyclic heterocyclic derivatives. Addition was shown to occur selectively in each case in the less substituted aromatic ring of the naphthalene moiety.

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Gay And Lesbian Identity Work At Home, Andrew W. Gorman-Murray Jan 2006

Gay And Lesbian Identity Work At Home, Andrew W. Gorman-Murray

Faculty of Science - Papers (Archive)

Geographical and sociological literature on gay/lesbian experiences of domestic environments has drawn attention to the heteronormativity of homes, focusing on how these sites often marginalise and silence gay/lesbian identities. While not denying these arguments, I suggest that many gay men and lesbians have also used domestic spaces to resist heteronormative socialisation and affirm gay/lesbian identities. In this paper I explore some of these affirmative uses. Drawing on 37 in-depth interviews with gay/lesbian Australians, I examine two key ways that some gay men and lesbians have used homes to consolidate their sexual identities: (i) the role played by domestic spaces in …

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Imagining King Street In The Gay/Lesbian Media, Andrew W. Gorman-Murray Jan 2006

Imagining King Street In The Gay/Lesbian Media, Andrew W. Gorman-Murray

Faculty of Science - Papers (Archive)

The identities of places do not exist a priori, but are derived from various representations constructed through social and cultural processes. The media is a key producer and disseminator of place images and identities in contemporary society. This paper examines the way the gay/lesbian media have imagined the King Street precinct, one of Sydney’s ostensible gay/lesbian localities, between 2003 and 2005. Through textual analyses of these media commentaries, I argue that King Street is often represented in comparison with Sydney’s other notable gay/lesbian space, the Oxford Street precinct. I find, moreover, that this imagined binary relationship is shifting and changing: …

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Antiquity Of The Oceans And Continents, Allen Phillip Nutman Jan 2006

Antiquity Of The Oceans And Continents, Allen Phillip Nutman

Faculty of Science - Papers (Archive)

Tracing the origin of the oceans and the division of the crust into distinct oceanic and continental realms relies on incomplete information from tiny vestiges of surviving oldest crust (>3.6 billions years old). Billions of years of tectonism, melting and erosion have obliterated the rest of that crust. Oceans and continental crust already existed almost four billion years ago because water-laid sedimentary rocks of this age have been found and because tonalites dominate in gneissic sequences dating from this period. Tonalites are igneous rocks produced by partial melting of hydrated basaltic crust at convergent plate boundaries. Collisional orogenic systems …

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Comment On ‘‘Zircon Thermometer Reveals Minimum Melting Conditions On Earliest Earth’’ Ii, Allen Phillip Nutman Jan 2006

Comment On ‘‘Zircon Thermometer Reveals Minimum Melting Conditions On Earliest Earth’’ Ii, Allen Phillip Nutman

Faculty of Science - Papers (Archive)

No abstract provided.

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An Epididymal Form Of Cauxin, A Carboxylesterase-Like Enzyme, Is Present And Active In Mammalian Male Reproductive Fluids, Heath W. Ecroyd, Maya Belghazi, Jl Dacheux, M Miyazaki, T Yamashita, Jl Gatti Jan 2006

An Epididymal Form Of Cauxin, A Carboxylesterase-Like Enzyme, Is Present And Active In Mammalian Male Reproductive Fluids, Heath W. Ecroyd, Maya Belghazi, Jl Dacheux, M Miyazaki, T Yamashita, Jl Gatti

Faculty of Science - Papers (Archive)

Mass spectrometric analysis of a prion protein (PrP)-containing complex isolated from ram cauda epididymal fluid revealed a protein that showed homology to a carboxylesterase-like protein previously identified in cat urine (cauxin). Using anticauxin antibodies, immunoreactive bands were detected in corpus and cauda epididymal fluid from all mammals tested (ram, boar, mouse, and cat). In the ram, the protein was also present in seminal fluid but not found to be associated with sperm. The bands reacting with the anti-cauxin antibody coincided with those having esterase activity in a zymographic assay and its levels paralleled the esterase activity of native epididymal fluids. …

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The Carboeurope Regional Experiment Strategy, A J Dolman, J Noilhan, P Durand, C Sarrat, A Brut, B Piguet, A Butet, N Jarosz, Y Brunet, D Loustau, E Lamaud, L Tolk, R Ronda, F Miglietta, B Gioli, V Magliulo, M Esposito, C Gerbig, S Korner, O Glademard, M Ramonet, P Ciais, B Neininger, R W A Hutjes, J A Elbers, Ronald Macatangay, O Schrems, G Perez-Landa, M J Sanz, Y Scholz, G Facon, E Ceschia, P Beziat Jan 2006

The Carboeurope Regional Experiment Strategy, A J Dolman, J Noilhan, P Durand, C Sarrat, A Brut, B Piguet, A Butet, N Jarosz, Y Brunet, D Loustau, E Lamaud, L Tolk, R Ronda, F Miglietta, B Gioli, V Magliulo, M Esposito, C Gerbig, S Korner, O Glademard, M Ramonet, P Ciais, B Neininger, R W A Hutjes, J A Elbers, Ronald Macatangay, O Schrems, G Perez-Landa, M J Sanz, Y Scholz, G Facon, E Ceschia, P Beziat

Faculty of Science - Papers (Archive)

No abstract provided.

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Endogenous Nitrogen Excretion By Red Kangaroos (Macropus Rufus): Effects Of Animal Age And Forage Quality, Adam J. Munn, Terence J. Dawson, Ian D. Hume Jan 2006

Endogenous Nitrogen Excretion By Red Kangaroos (Macropus Rufus): Effects Of Animal Age And Forage Quality, Adam J. Munn, Terence J. Dawson, Ian D. Hume

Faculty of Science - Papers (Archive)

Red kangaroos (Macropus rufus) are large (>20 kg) herbivorous marsupials common to arid and semiarid Australia. The population dynamics of red kangaroos are linked with environmental factors, operating largely through juvenile survival. A crucial period is the young-at-foot (YAF) stage, when juveniles have permanently left the mother's pouch but still take milk from a teat in the pouch. Forage quantity and quality have been implicated in drought-related mortalities of juvenile kangaroos. Here we compared how forage quality affected nitrogen (N) intake and excretion by YAF, weaned, and mature, non-lactating female red kangaroos. On high-quality forage ( chopped lucerne hay, …

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Digestive Plasticity Of The Small Intestine And The Fermentative Hindgut In A Marsupial Herbivore, The Tammar Wallaby (Macropus Eugenii), Adam J. Munn, Peter Banks, Ian D. Hume Jan 2006

Digestive Plasticity Of The Small Intestine And The Fermentative Hindgut In A Marsupial Herbivore, The Tammar Wallaby (Macropus Eugenii), Adam J. Munn, Peter Banks, Ian D. Hume

Faculty of Science - Papers (Archive)

We investigated the effects of a ground, pelleted diet versus natural forage on the gross morphology of the gastrointestinal tract of a medium- sized (5 - 7 kg body mass) macropodid marsupial, the tammar wallaby ( Macropus eugenii). The empty wet mass ( g) of the small intestine of tammar wallabies maintained on a pelleted diet for 6 weeks was 22% greater than that of animals maintained on natural forage, once body mass was taken into account by ANCOVA. Similarly, the body-mass-adjusted length of the tammar wallaby caecum and proximal colon combined was 25% longer in animals maintained on the …

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The Review Of Application Of Acupressure Massage In Clinical Nursing Care, Hui Chen Chang, Hsiao-Mei Liu, Yi-Tsun Li, Hsuan-Fang Chen, Pei-Hsuan Chou Jan 2006

The Review Of Application Of Acupressure Massage In Clinical Nursing Care, Hui Chen Chang, Hsiao-Mei Liu, Yi-Tsun Li, Hsuan-Fang Chen, Pei-Hsuan Chou

Faculty of Science, Medicine and Health - Papers: part A

No abstract provided.

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Experimental Manipulation Of Shade, Silt, Nutrients And Salinity On The Temperate Reef Sponge Cymbastela Concentrica, D. E. Roberts, A. R. Davis, S. P. Cummins Jan 2006

Experimental Manipulation Of Shade, Silt, Nutrients And Salinity On The Temperate Reef Sponge Cymbastela Concentrica, D. E. Roberts, A. R. Davis, S. P. Cummins

Faculty of Science - Papers (Archive)

Discharge of sewage effluent into the ocean has been shown to cause changes in the structure and distribution of a range of biological assemblages, including those dominated by sponges. To date, the underlying mechanisms by which exposure to sewage alters such assemblages is unclear, although a number of potential models have been proposed. Here, a series of manipulative field experiments were done using the phototrophic spongeCymbastela concentrica. Hypotheses from the general models that increased shade, silt, nutrients or salinity gradients were tested to find a cause for observed declines in populations exposed to sewage. Changes in the variables …

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Current Applications Of Hyperspectral Remote Sensing In The Discrimination Of Australian Eucalypt Species, Laurie A. Chisholm, B Datt Jan 2006

Current Applications Of Hyperspectral Remote Sensing In The Discrimination Of Australian Eucalypt Species, Laurie A. Chisholm, B Datt

Faculty of Science - Papers (Archive)

hyperspectral remote sensing provides detail on biophysical variables related to forest ecosystem processes useful for tracking and predicting structure and function of vegetation considerable potential of laboratory spectrometry and near-range work in the field to derive stress indicators and changes in cholorphyll content has been demonstrated that includes a range of studies conducted on unique Australian vegetation types.

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Application Of Surrogate Methods For Assessing The Bioavailability Of Pahs In Sediments To A Sediment Ingesting Bivalve, Stuart L. Simpson, Victoria L. Burston, Dianne F. Jolley, Kim Chau Jan 2006

Application Of Surrogate Methods For Assessing The Bioavailability Of Pahs In Sediments To A Sediment Ingesting Bivalve, Stuart L. Simpson, Victoria L. Burston, Dianne F. Jolley, Kim Chau

Faculty of Science - Papers (Archive)

The usefulness of two surrogate methods for rapidly determining the bioavailability of PAHs in hydrocarbon-contaminated marine sediments was assessed. Comparisons are made between the PAHs accumulated by the benthic bivalve, Tellina deltoidalis, and the extractable-PAHs determined using a 6-h XAD-2 resin desorption method and a 4-h gut fluid mimic (GFM) extraction method. There were significant positive relationships between PAH bioaccumulation by the bivalves and sediment PAH concentrations. These relationships were not improved by normalising the sediment PAH concentrations to the organic carbon concentration. The average percentage lipid content of the bivalves was 1.47 ± 0.22% and BSAFs for total-PAHs ranged …

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Recovery And Evolutionary Analysis Of Complete Integron Gene Cassette Arrays From Vibrio, Yan Boucher, Camilla L. Nesbo, Michael J. Joss, Andrew Robinson, Bridget C. Mabbutt, Michael R. Gillings, W Ford Doolittle, Hatch W. Stokes Jan 2006

Recovery And Evolutionary Analysis Of Complete Integron Gene Cassette Arrays From Vibrio, Yan Boucher, Camilla L. Nesbo, Michael J. Joss, Andrew Robinson, Bridget C. Mabbutt, Michael R. Gillings, W Ford Doolittle, Hatch W. Stokes

Faculty of Science, Medicine and Health - Papers: part A

Background: Integrons are genetic elements capable of the acquisition, rearrangement and expression of genes contained in gene cassettes. Gene cassettes generally consist of a promoterless gene associated with a recombination site known as a 59-base element (59-be). Multiple insertion events can lead to the assembly of large integron-associated cassette arrays. The most striking examples are found in Vibrio, where such cassette arrays are widespread and can range from 30 kb to 150 kb. Besides those found in completely sequenced genomes, no such array has yet been recovered in its entirety. We describe an approach to systematically isolate, sequence and annotate …

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A Method For Improving Landscape Scale Temperature Predictions And The Implications For Vegetation Modelling, Michael B. Ashcroft Jan 2006

A Method For Improving Landscape Scale Temperature Predictions And The Implications For Vegetation Modelling, Michael B. Ashcroft

Faculty of Science, Medicine and Health - Papers: part A

Understanding how environmental factors influence the spatial distribution of vegetation allows environmental managers to plan for issues such as climate change, ecological restoration and intensified land use. Elevation is often used as an indirect predictor of temperature, but this limits the applicability of environmental models to other study areas and introduces errors in mountainous terrain where variations in slope, aspect, and radiation can significantly alter the relationship between elevation and temperature. Some studies have developed estimates for temperature that also consider factors such as radiation, but these usually estimate the temperature for each location without considering the surrounding environment. In …

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