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Articles 121 - 131 of 131
Full-Text Articles in Physical Sciences and Mathematics
The Development Of Signal Transduction Pathways During Epididymal Maturation Is Calcium Dependent, Heath W. Ecroyd, Kelly Asquith, Russell C. Jones, Robert J. Aitken
The Development Of Signal Transduction Pathways During Epididymal Maturation Is Calcium Dependent, Heath W. Ecroyd, Kelly Asquith, Russell C. Jones, Robert J. Aitken
Faculty of Science - Papers (Archive)
Capacitation has been correlated with the activation of a cAMP-PKA-dependent signaling pathway leading to protein tyrosine phosphorylation. The ability to exhibit this response to cAMP matures during epididymal maturation in concert with the ability of the sperrnatozoa to capacitate. In this study, we have addressed the mechanisms by which spermatozoa gain the potential to activate this signaling pathway during epididymal maturation. In a modified Tyrode's medium containing 1.7 mM calcium, caput spermatozoa had significantly higher [Ca2+](i) than caudal cells and could not tyrosine phosphorylate in response to cAMP. However, in calcium-depleted medium both caput and caudal cells could exhibit a …
Processes Controlling Metal Transport And Retention As Metal-Contaminated Groundwaters Efflux Through Estuarine Sediments, Stuart L. Simpson, Edward J. Maher, Dianne F. Jolley
Processes Controlling Metal Transport And Retention As Metal-Contaminated Groundwaters Efflux Through Estuarine Sediments, Stuart L. Simpson, Edward J. Maher, Dianne F. Jolley
Faculty of Science - Papers (Archive)
Factors affecting the transport and retention of Cd, Cr, Cu, Ni, Pb and Zn in acidic groundwaters as they pass through estuarine sediments were investigated using column experiments. Acidic groundwaters caused the rapid dissolution of iron sulfide (AVS) and other iron and manganese phases from sediments that are important for metal binding and buffering. Metal breakthrough to overlying water occurred in the order of Ni>Zn>Cd>>Cu>>Cr/Pb. Metal transport increased as the sediment permeability increased, reflecting the low resistance to flow caused by larger sand-sized particles and the decreased abundance of metal adsorption sites on these materials. Metal …
Protecting Group Effects On The Efficiency Of The Ruthenium-Catalyzed Alder-Ene Reaction, Joseph Hartley, Stephen G. Pyne
Protecting Group Effects On The Efficiency Of The Ruthenium-Catalyzed Alder-Ene Reaction, Joseph Hartley, Stephen G. Pyne
Faculty of Science - Papers (Archive)
The efficiency of the ruthenium-catalysed Alder-ene reaction of hydroxy alkenes depends heavily on the nature of the O-protecting groups employed as well as the length of the carbon spacer between the hydroxy and alkene group.
Methods Of Online Grocery Shopping: Linking And Searching, Mark B. Freeman
Methods Of Online Grocery Shopping: Linking And Searching, Mark B. Freeman
Faculty of Informatics - Papers (Archive)
There are two dominant methods for locating information or goods on websites and online systems: searching and linking. Most previous research on searching and linking methods has focused on generic websites dedicated to locating information, such as Yahoo, rather than the searching and linking mechanisms used in specific applications, such as online shopping. In contrast, this study assessed the searching and linking metaphors inherent in online grocery stores, where each website must provide efficient tools for locating products if they are to be successful e-commerce websites. Worldwide grocery sites were judged against a checklist of advanced search features, and the …
Nano-Patterning And Manipulation Of Genetically Engineered Virus Nanoblocks, Moon J. Kim, Marc In Het Panhuis, R Gupta, A S. Blum, B R. Ratna, Bruce E. Gnade, Robert Wallace
Nano-Patterning And Manipulation Of Genetically Engineered Virus Nanoblocks, Moon J. Kim, Marc In Het Panhuis, R Gupta, A S. Blum, B R. Ratna, Bruce E. Gnade, Robert Wallace
Australian Institute for Innovative Materials - Papers
Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1-5, 2004.
Distributed Polarizability Analysis For Para-Nitroaniline And Meta-Nitroaniline: Functional Group And Charge-Transfer Contributions, Marc In Het Panhuis, R W. Munn, P L A Popelier
Distributed Polarizability Analysis For Para-Nitroaniline And Meta-Nitroaniline: Functional Group And Charge-Transfer Contributions, Marc In Het Panhuis, R W. Munn, P L A Popelier
Australian Institute for Innovative Materials - Papers
Topological partitioning of electronic properties is used to investigate the polarizability of para-nitroaniline and meta-nitroaniline. The distributed polarizabilities for atoms are combined into total local or generalized distributed contributions for the amino, ring, and nitro functional groups; generalized distributed group contributions have not been calculated before. The local group contributions are transferable between the two molecules only when charge transfer is suppressed, but the generalized distributed contributions prove surprisingly similar in the two molecules, apparently because they treat charge-transfer contributions explicitly.
Lessons Learned From The Practice Of Mobile Health Application Development, Ping Yu, H. Yu
Lessons Learned From The Practice Of Mobile Health Application Development, Ping Yu, H. Yu
Faculty of Informatics - Papers (Archive)
This fast abstract briefly discusses lessons learned in terms of how to overcome limitations of PDA devices, effectively capture requirements for mobile health application development and effectively reengineer a desktop application on PDA. The limitation of PDA devices includes: (1) small screen size, which limits text-based data entry, reporting and browsing; (2) limited storage space and slow processing, which requires effective and efficient coding generation; (3) security limitations and inadequate third party application support, which poses challenge for application development. The corresponding strategies addressing the above challenges are: (1) providing check box, radio button, drop down list, text field, combo …
A Distributed Server Architecture For Providing Immersive Audio Communication To Massively Multiplayer Online Games, C. D. Nguyen, Farzad Safaei, P. Boustead
A Distributed Server Architecture For Providing Immersive Audio Communication To Massively Multiplayer Online Games, C. D. Nguyen, Farzad Safaei, P. Boustead
Faculty of Informatics - Papers (Archive)
This paper investigates the assignment of audio mixing operations to a geographically distributed set of servers to provide an immersive audio communication environment for massively multiplayer online games. The immersive audio communication service enables each avatar to hear a realistic audio mix of the conversations in its audible range. There are three primary delivery architectures for this service, namely, peer-to-peer, central server and distributed servers. We focus on the distributed server architecture, which partitions the virtual world into regions or locales and then assigns the computation associated with the creation of audio scenes for all avatars in each locale to …
On The Provision Of Immersive Audio Communication To Massively Multi-Player Online Games, C. D. Nguyen, Farzad Safaei, D. Platt
On The Provision Of Immersive Audio Communication To Massively Multi-Player Online Games, C. D. Nguyen, Farzad Safaei, D. Platt
Faculty of Informatics - Papers (Archive)
This paper discusses issues in providing immersive audio communication to massively multi-player online games (MMOG). We focus on network and server architectures for creating immersive audio scenes for game clients. We examine advantages and limitations of several architectures, including central server, distributed servers, and peer-to-peer architectures. We focus on a dynamic centralized server architecture which is suitable for the current MMOG in terms of sealability at end users and resource efficiency. We propose algorithms to optimize the performance of a centralized server. Finally, a simulation study is carried out to evaluate the performance of our proposed centralized server architecture and …
Nonlinear Sigma Model For Odd-Frequency Triplet Superconductivity In Superconductor/Ferromagnet Structures, J E. Bunder, K B. Efetov
Nonlinear Sigma Model For Odd-Frequency Triplet Superconductivity In Superconductor/Ferromagnet Structures, J E. Bunder, K B. Efetov
Faculty of Informatics - Papers (Archive)
No abstract provided.
Data Management For Large Scale Power Quality Surveys, Murray-Luke Peard, Sean T. Elphick, Victor W. Smith, Victor J. Gosbell, D A. Robinson
Data Management For Large Scale Power Quality Surveys, Murray-Luke Peard, Sean T. Elphick, Victor W. Smith, Victor J. Gosbell, D A. Robinson
Faculty of Informatics - Papers (Archive)
For large scale power quality surveys, the management of the large amount of data generated is a major issue. This paper presents solutions to three main areas of data management, viz. a data interchange format, database design and data processing. Consideration of these issues has come about as a result of the Long Term National Power Quality Survey currently being conducted by the University of Wollongong, and reference is made to that specific application for illustrative purposes.