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Articles 1 - 8 of 8
Full-Text Articles in Social and Behavioral Sciences
Purely Infinite C-Algebras Arising From Crossed Products, Mikael Rordam, Adam Sierakowski
Purely Infinite C-Algebras Arising From Crossed Products, Mikael Rordam, Adam Sierakowski
Faculty of Engineering and Information Sciences - Papers: Part A
We study conditions that will ensure that a crossed product of a C-algebra by a discrete exact group is purely infinite (simple or non-simple). We are particularly interested in the case of a discrete non-amenable exact group acting on a commutative C-algebra, where our sufficient conditions can be phrased in terms of paradoxicality of subsets of the spectrum of the abelian C-algebra. As an application of our results we show that every discrete countable non-amenable exact group admits a free amenable minimal action on the Cantor set such that the corresponding crossed product C-algebra is a Kirchberg algebra in the …
C-Amp Dependent Protein Kinase A Inhibitory Activity Of Six Algal Extracts From South Eastern Australia And Their Fatty Acid Composition, Ana Zivanovic, Danielle Skropeta
C-Amp Dependent Protein Kinase A Inhibitory Activity Of Six Algal Extracts From South Eastern Australia And Their Fatty Acid Composition, Ana Zivanovic, Danielle Skropeta
Faculty of Science, Medicine and Health - Papers: part A
c-AMP dependent protein kinase (protein kinase A, PKA) is an important enzyme involved in the regulation of an increasing number of physiological processes including immune function, cardiovascular disease, memory disorders and cancer. The objective of this study was to evaluate the PKA inhibitory activity of a range of algal extracts, along with their fatty acid composition. Six algal species were investigated including two Chlorophyta (Codium dimorphum and Ulva lactuca), two Phaeophyta (Phyllospora comosa and Sargassum sp.) and two Rhodophyta (Prionitis linearis and Corallina vancouveriensis), with the order of PKA inhibitory activity of their extracts identified as follows: brown seaweeds > red …
Binaphthyl-Anchored Antibacterial Tripeptide Derivatives With Hydrophobic C-Terminal Amino Acid Variations, John Bremner, Paul A. Keller, Stephen Pyne, Mark Robertson, Kandasamy Sakthivel, Kittiya Somphol, Dean Baylis, Jonathon A Coates, John Deadman, Dharshini Jeevarajah, David I. Rhodes
Binaphthyl-Anchored Antibacterial Tripeptide Derivatives With Hydrophobic C-Terminal Amino Acid Variations, John Bremner, Paul A. Keller, Stephen Pyne, Mark Robertson, Kandasamy Sakthivel, Kittiya Somphol, Dean Baylis, Jonathon A Coates, John Deadman, Dharshini Jeevarajah, David I. Rhodes
Faculty of Science - Papers (Archive)
The facile synthesis of seven new dicationic tripeptide benzyl ester derivatives, with hydrophobic group variations in the C-terminal amino acid component, is described. Moderate to good activity was seen against Gram-positive bacteria in vitro. One cyclohexyl-substituted compound 2c was tested more widely and showed good potency (MIC values ranging from 2–4 μg/mL) against antibiotic-resistant strains of Staphylococcus aureus and Enterococci (VRE, VSE), and against Staphylococcus epidermidis.
Synthesis And Electrochemical Properties Of Sn-Sno2/C Nanocomposite, Chuanqi Feng, Meiyu Dan, Chaofeng Zhang, Zaiping Guo, Shiquan Wang, R Zeng
Synthesis And Electrochemical Properties Of Sn-Sno2/C Nanocomposite, Chuanqi Feng, Meiyu Dan, Chaofeng Zhang, Zaiping Guo, Shiquan Wang, R Zeng
Faculty of Engineering and Information Sciences - Papers: Part A
A Sn-Sn02/C nanocomposite was synthesized using the electrospinning method. Thermal analysis was used to determine the content range of Sn and Sn02 in the composite. The composite was characterized by X-ray diffraction, and the particle size and shape in the Sn-SnOiC composite were determined by scanning and transmission electron microscopy. The results show that the Sn-Sn02/C composite takes on a nanofiber morphology, with the diameters of the nanofibers distributed from 50 to 200 nm. The electrOChemical properties of the Sn-SnOiC composite were also investigated. The Sn-SnOiC composite as an electrode material has both higher reversible capacity (887 mAh· g-I). and …
Influence Of 18ghz Microwave Radiation On The Enzymatic Activity Of Escherichia Coli Lactate Dehydrogenase And Cytochrome C Oxidase, Yuri Shamis, Alex Traub, Rodney J. Croft, Russell Crawford, Elena Ivanova
Influence Of 18ghz Microwave Radiation On The Enzymatic Activity Of Escherichia Coli Lactate Dehydrogenase And Cytochrome C Oxidase, Yuri Shamis, Alex Traub, Rodney J. Croft, Russell Crawford, Elena Ivanova
Faculty of Health and Behavioural Sciences - Papers (Archive)
The catalytic activity of two common bacterial enzymes, lactate dehydrogenase (LDH) and cytochrome c oxidase (COX) from Escherichia coli, was examined following bacterial exposure to microwave (MW) radiation under well-defined experimental conditions. The experiments were conducted in a specialised microwave processing apparatus, with an exposure frequency of 18 GHz, and a temperature profile that was restricted to below 40oC to avoid thermal degradation of the bacteria. The absorbed power was calculated to be 1500 kW/m3 and the electric field was determined to be 300 V/m. Both values were theoretically confirmed using Computer Simulation Technology (CST) Microwave Studio 3D Electromagnetic Stimulation …
Realising The C*-Algebra Of A Higher-Rank Graph As An Exel's Crossed Product, Nathan Brownlowe
Realising The C*-Algebra Of A Higher-Rank Graph As An Exel's Crossed Product, Nathan Brownlowe
Faculty of Engineering and Information Sciences - Papers: Part A
We use the boundary-path space of a finitely-aligned k-graph Lambda to construct a compactly-aligned product system X, and we show that the graph algebra C*(Lambda) is isomorphic to the Cuntz-Nica-Pimsner algebra NO(X). In this setting, we introduce the notion of a crossed product by a semigroup of partial endomorphisms and partially-defined transfer operators by defining it to be NO(X). We then compare this crossed product with other definitions in the literature.
An Analysis Of Factors Affecting The Effective Use Of Knowledge Management In Counter Improvised Explosive Device (C-Ied) Operations, Umit Gencer, Rafael E. Landaeta, Resit Unal, C. Ariel Pinto, Gokay Sursal
An Analysis Of Factors Affecting The Effective Use Of Knowledge Management In Counter Improvised Explosive Device (C-Ied) Operations, Umit Gencer, Rafael E. Landaeta, Resit Unal, C. Ariel Pinto, Gokay Sursal
Engineering Management & Systems Engineering Faculty Publications
Improvised Explosive Device (IED) is a weapon of choice and is likely to remain a major component of the Global War on Terrorism. It is critical that gaps in knowledge transfer are quickly addressed in order to more effectively equip personnel to counter IED (C-IED) threat. Therefore, the military must analyze the current Knowledge Management (KM) programs in C-IED arena in order to maximize transfer of knowledge derived from experience and skill to staffs and finally to commanders. This study investigates the factors that influence effective use of KM in C-IED operations in the military. The study suggests that effective …
Agile Knowledge Management: A Review, Reconceptualization, And Extension To Military Applications, Dogan Ozturk, Rafael E. Landaeta, Resit Unal, Cesar Ariel Pinto, Gokay Sursal
Agile Knowledge Management: A Review, Reconceptualization, And Extension To Military Applications, Dogan Ozturk, Rafael E. Landaeta, Resit Unal, Cesar Ariel Pinto, Gokay Sursal
Engineering Management & Systems Engineering Faculty Publications
This study contributes to the literature by integrating agility in knowledge management (KM) operations, especially in military environments via major findings of (a) introducing a new approach to KM with integration of 'agility'; (b) articulating the application of an enhanced process of Agile Knowledge Management (AKM) across the military. The purpose of the study is to explore the conceptual background of agility in KM, re-conceptualize it and extend it to military applications with a special focus on counterinsurgency (COIN). An initial qualitative exploration of agility in KM was performed. Three different concepts and their interrelationships were analyzed: (a) KM, (b) …