Faculty of Science: Recent submissions

Now showing items 481-500 of 655

Inhibitory effect of different solvent extracts of Vitex negundo L. and Allium sativum L. on phytopathogenic bacteria

Jeyaseelan, E.C; Pathmanathan, M.K.; Jeyadevan, J.P (Archives of Applied Science Research, 2010)

There is a worldwide interest in searching for the safe and effective novel antibacterial compounds of plant origin for the control of plant pathogenic bacteria which is responsible for the great impact on the growth and ...
A Mild Photoactivated Hydrophilic/Hydrophobic Switch

Critchley, K.; Jeyadevan, J.P; Fukushima, H.; Ishida, M.; Shimoda, T.; Bushby, R.; Evans, S.D. (American Chemical Society, 2005-05-10)

Surface modification using light is one of the most powerful methods for controlling the physical and chemical properties of functionalized surfaces. In this paper, we report on systems where soft UV irradiation (λ = 365 ...
A Medicinal Chemistry Perspective on 4-Aminoquinoline Antimalarial Drugs

Neill, O.; Paul, M.; Ward; Stephen, A.; Berry; Neil, G.; Jeyadevan, J.P; Biagini; Giancarlo, A.; Asadollaly; Egbaleh; Park, B.K.; Bray; Patrick, G. (Bentham Science Publishers, 2006-03-05)

A broad overview is presented describing the current knowledge and the ongoing research concerning the 4- aminoquinolines (4AQ) as chemotherapeutic antimalarial agents. Included are discussions of mechanism of action, ...
Antimalarial and Antitumor Evaluation of Novel C-10 Non-Acetal Dimers of 10β-(2-Hydroxyethyl) deoxoartemisinin

Jeyadevan, J.P.; Bray, B.G.; Chadwick, J.; Mercer, A.E.; Byrne, A.; Ward, S.A.; Park, B.K.; Williams, A.P.; Cosstick, R.; Davies, J.; Higson, A.P.; Irving, E.; Posner, G.H.; Neill, P.M (American Chemical Society, 2004-02-26)

Four series of C-10 non-acetal dimers were prepared from key trioxane alcohol 10β-(2-hydroxyethyl)deoxoartemisinin (9b). All of the dimers prepared displayed potent low nanomolar antimalarial activity versus the K1 and HB3 ...
Phosphorus Fractions and its Adsorption Thermodynamics onto Sediments from the Upper Reaches of the Yellow River, China

Bei Gang Li; Pei Yi Liu; Qin Ma (Defect and Diffusion Forum, 1994-01-01)

The form distribution of phosphorus (P) in ten surface sediments from the upper reaches of the Yellow River, China, was studied using the sequential chemical extraction procedure－the standards, measurements and testing ...
Building Block Syntheses of Gallic Acid Monomers and Tris-(O-gallyl)-gallic Acid Dendrimers Chemically Attached to Graphite Powder: A Comparative Study of Their Uptake of Al (III) Ions

Ye , J.; Abiman, P.; Crossley, A.; Jones, J.H.; Wildgoose, G.G.; Richard, G. (American Chemical Society, 2009-09-24)

A synthesis of graphite powder covalently modified with gallic acid (3,4,5-trihydroxybenzoic acid), via a 1,2-diaminoethane “linker” molecule, to form gallylaminoethylaminocarbonyl graphite (gallic-carbon) is reported. The ...
Contrasting pKa of Protonated Bis(3-aminopropyl)-Terminated Polyethylene Glycol “Jeffamine” and the Associated Thermodynamic Parameters in Solution and Covalently Attached to Graphite Surfaces

Abiman, P.; Gregory, G.; Wildgoose, G.G.; Crossley, A.; John, J.H.; Richard, G. (Issue, 2007-11-26)

The pKa value of protonated Jeffamine (bis(3-aminopropyl) terminated polyethylene glycol) in solution and attached as a monolayer to graphite surfaces has been determined using potentiometric titration. The protonated ...
Investigating the Mechanism for the Covalent Chemical Modification of Multiwalled Carbon Nanotubes Using Aryl

Abiman, P.; Gregory, G.; Wildgoose; Richard, G.; Compton. (Physical and Theoretical Chemistry Laboratory,, 2007-12-20)

The mechanism involved in the modification of carbon nanotubes (CNTs) funtionalised using diazonium salts has been investigated. Bamboo-like and hollow-tube multiwalled carbon nanotubes (MWCNTs) were covalently modified ...
Tamil Localisation Process – A case study

Sarveswaran, K.; Gihan, G. (2009)

Localisation has become an active area in computer field and many organisations and individuals are localising software into their preferred languages. Different people use different localisation processes to do localisation. ...
Challenges in developing MIS – Case from Government sector

Sarveswaran, K.; Perera, P.; Samudaya, N.; Asoka, P.; Fernando, P. (2006)

Management Information Systems (MISs) are used to manage the processes, people, resources, finance, technologies and services of an organisation. An MIS has been developed continuously since 2007 at the University of ...
Scalable fault tolerant architecture for complex event processing systems

Randika, H.C.; Martin, H.E.; Sampath, D.M.R.R.; Metihakwala, D.S.; Sarveswaran, K.; Wijekoon, M. (IEEE, 2010-10)

Complex Event Processing (CEP) is one of the fastest emerging fields in computer science. Modern CEP systems which are critical for organizations to maintain their business processes and to achieve excellence through ...
A SUCCESSFUL GROWTH OF THE E-LEARNING SYSTEM AT UNIVERSITY OF MORATUAWA

Sarveswaran, K.; Perera, G.I.U.S.; Fernando, M.S.D. (Department of Computer Science & Engineering, 2002)

A successful e-Learning system primarily consists of a Learning Management system and a Content Management system. A Learning Management System addresses the user administration and related managerial requirements. This ...
An adaptive technique for handwritten Tamil character recognition

Sarveswaran, K.; Ratnaweera, D.A.A.C. (IEEE, 2007-11)

Handwritten character recognition is playing a vital role in many areas of modern world. Even though considerable research work has been done in handwritten character recognition, comparatively fewer efforts have been made ...
Speeded-up and Compact Visual Codebook for Object Recognition

Barathy, M.; Ramanan, A.; Mahesan, S.; Pinidiyaarachchi, U.A.J. (International Journal of Image Processing (IJIP), 2013)

The well known framework in the object recognition literature uses local information extracted at several patches in images which are then clustered by a suitable clustering technique. A visual codebook maps the ...
Control chart pattern clustering using a new self-organizing spiking neural network

Pham, D. T.; Packianather, M.S.; Charles, Eugene Yougarajah Andrew (Proceedings of the Institution of Mechanical Engineers, 2008-10-01)

This paper focuses on the architecture and learning algorithm associated with using a new self-organizing delay adaptation spiking neural network model for clustering control chart patterns. This temporal coding spiking ...
Reproducing opportunistic connectivity traces using connectivity models

Thabotharan, Kathiravelu; Pears, A. (ACM New York, NY, USA ©2007, 2007-12-10)

Opportunistic networking is a new communication paradigm which explores the potential of inter-device contacts due to human mobility [3, 5]. Intermittent connectivity, non existence of an end-to-end path between nodes and ...
Towards designing a routing protocol for opportunistic networks

Thabotharan, Kathiravelu; Ranasinghe, N.; Perera, A. (IEEE, 2010)

Intermittently connected opportunistic networks experience frequent disconnections and shorter contact durations. Therefore routing of messages towards their destinations needs to be handled from various points of view. ...
An enhanced congestion aware adaptive routing protocol for opportunistic networks

Thabotharan, Kathiravelu; Ranasinghe, N.; Perera, A. (IEEE, 2011-08)

The adaptive routing protocol recently proposed by researchers for opportunistic networks often makes an assumption that when each node makes an intelligent decision of choosing a best forwarder node to route its messages, ...
Approaches to P2P Internet Application Development

Thabotharan, Kathiravelu; Pears, A. (Computer Science and Information Systems, 2011-09-21)

Research in overlay and P2P networking has been tightly focused on fundamentals in the last few years, leading to developments on a range of important issues. The time has come to integrate these insights into existing and ...
What & when?: Distributing Content in Opportunistic Networks

Kathiravelu, T.; Pears, A. (Wireless and Mobile Communications,, 2006)

Tomorrow's mobile data exchanges will often occur using intermittent connectivity and the design and development of mobility models, applications, protocols and infrastructures are an essential part of future research in ...

Now showing items 481-500 of 655

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