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Articles 1 - 8 of 8
Full-Text Articles in Physical Sciences and Mathematics
A New Signature Scheme Without Random Oracles From Bilinear Pairings, Fangguo Zhang, Xiaofeng Chen, Willy Susilo, Yi Mu
A New Signature Scheme Without Random Oracles From Bilinear Pairings, Fangguo Zhang, Xiaofeng Chen, Willy Susilo, Yi Mu
Faculty of Informatics - Papers (Archive)
In this paper, we propose a new signature scheme that is existentially unforgeable under a chosen message attack without random oracle. The security of the proposed scheme depends on a new complexity assumption called the k+1 square roots assumption. Moreover, the k+1 square roots assumption can be used to construct shorter signatures under the random oracle model.
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
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 …
Novel Polycyclic Diels-Alder Adducts From Ring Distorted 3-Aza[5] And 3-Aza[6] (1,7) Napthalenophanes, John B. Bremner, Wasna Jaturonusmee
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.
Evidence From Mitochondrial Genomics On Interordinal Relationships In Insects, Stephen L. Cameron, Andrew T. Beckenbach, Mark P. Dowton, Michael F. Whiting
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.
Growth Of Width-Controlled Nanowires Mno2 From Mesoporous Carbon And Investigation Of Their Properties, Shenmin Zhu, Xiaolin Wang, Wei Huang, Deyue Yan, Honghua Wang, Di Zhang
Growth Of Width-Controlled Nanowires Mno2 From Mesoporous Carbon And Investigation Of Their Properties, Shenmin Zhu, Xiaolin Wang, Wei Huang, Deyue Yan, Honghua Wang, Di Zhang
Australian Institute for Innovative Materials - Papers
One-dimensional α-MnO2 nanowires with a controlled width of 10–20 nm have been developed by means of ultrasonic waves from mesoporous carbon using KMnO4 as the precursor. The formation mechanism has been proposed based on the results. A peak around 100 K was detected in the temperature-dependence of magnetization curve, indicating the ferromagnetic state in nanocomposite mesoporous carbon-MnO2, which is in agreement with the transition temperature found from the magnetization versus applied magnetic field curve. The magnetization versus temperature curve of the obtained MnO2 nanowires showed a magnetic transition at about 50 K, illustrating that a …
Atmospheric Carbonyl Sulfide (Ocs) Variation From 1992-2004 By Ground-Based Solar Ftir Spectrometry, Nicholas M. Deutscher, Nicholas B. Jones, David W. Griffith, S. W. Wood, F Murcray
Atmospheric Carbonyl Sulfide (Ocs) Variation From 1992-2004 By Ground-Based Solar Ftir Spectrometry, Nicholas M. Deutscher, Nicholas B. Jones, David W. Griffith, S. W. Wood, F Murcray
Faculty of Science - Papers (Archive)
Analysis of ground-based high-resolution solar FTIR absorption spectra from four sites was performed to determine trends and variability in OCS columns over the period 1992–2004. The sites were Wollongong, Australia (34.45° S, 150.88° E), Lauder, New Zealand (45.0° S, 169.7° E), Arrival Heights, Antarctica (77.8° S, 166.6° E) and Mauna Loa, Hawaii (19.5° N, 155.6° W). Small but significant long-term trends of −0.18±0.02% yr-1 above Hawaii, −0.30±0.12% yr-1 above Wollongong and −0.29±0.14% yr-1 above Lauder, were seen. No significant trend was seen above Arrival Heights. A large peak-to-peak seasonal difference observed in 1996–1997 above Wollongong and reported …
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
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.
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.