Browsing Engineering and Technology by Issue Date
Now showing items 1-20 of 956
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Power conditioning of thermoelectric generated power using dc-dc converters: A case study of a boost converter
(University of Nottingham, 1930)The near exhaustion of non renewable energy resources such as fossil fuels followed by disastrous climatic changes have alerted the world to invest in alternative energy sources. Thermoelectric (TE) technology is responsible ... -
A microcomputer-controlled solid-state dark adaptometer
(Behavior Research Methods & Instrumentatio, 1981)A low-cost microprocessor-controlled light-emitting diode (LED) dark adaptometer is described. The apparent intensities of red and green stimuli are controlled by changing the duty cycles of LED display elements which ... -
Low-Temperature Migration of Silicon in Metal Films on Silicon Substrates Studied by Backscattering Techniques
(Journal of Vacuum Science and Technology, 2000)The backscattering method using 2-MeV4He+ ions is employed to obtain microscopic information about solid-solid reaction of Si with thin layers (200∼4000 Å) of Au, Ag, and Al which are vacuum evaporated onto Si crystal ... -
Water sorption and mechanical behaviour of cosmetic direct restorative materials in artificial saliva
(Dental Materials, 2001)To evaluate the water sorption and mechanical behaviour of a compomer in comparison with those of its nominal forerunners, a filled resin restorative material and a conventional glass ionomer cement. Compomer (Dyract AP) ... -
Solution of large-scale weighted least-squares problems
(Numerical linear algebra with applications, 2002)A sequence of least-squares problems of the form miny G1=2(ATy−h) 2, where G is an n×n positive definite diagonal weight matrix, and A an m×n (m6n) sparse matrix with some dense columns; has many applications in linear ... -
Defining visualization operations for temporal cartographic animation design
(International journal of applied earth observation and geoinformation, 2002)Cartographic animation has emerged as a potentially effective visualization technique that has an intuitive power in representing dynamic geographical phenomena through its ability to show interrelations amongst geospatial ... -
Formation of silicon oxide over gold layers on silicon substrates
(Journal of Applied Physics, 2003)When a single‐crystal substrate of silicon is covered with evaporated gold and heated at relatively low temperatures (100–300°C) in an oxidizing atmosphere, a silicon‐dioxide layer is readily formed over the gold layer. ... -
Aspects of water sorption from the air, water and artificial saliva in resin composite restorative materials
(Dental Materials, 2003)Primarily to establish whether artificial saliva (AS) at 37 °C is essential as a clinically relevant environment for testing filled, resin composite restorative materials. The effect of other storage conditions was also ... -
Polymerization of resin composite restorative materials: exposure reciprocity
(Dental Materials, 2003)To examine whether there is reciprocity between irradiation time and irradiance with regard to the mechanical properties of filled, resin composite restorative materials (RCs). Four visible light-cured RCs, all of shade ... -
Using Java Speech Grammars as Cache Memory for Databases in VoiceXML Applications
(Research Gate, 2003)VoiceXML applications capture tokens input by users and match them against a specified grammar. But the Java Speech Grammar Format does not provide for a mechanism to capture tokens unmatched by a grammar. In this paper, ... -
Training for Improved Decentralized Service Delivery – A case study from Uganda
(WEDC, Loughborough University, 2004)The introduction of decentralization and decentralized service delivery in Uganda placed an increased demand for qualified personnel at the districts and lower levels. Despite this, there were no efforts in the past to ... -
Geological Conditions and Petroleum Exploration Potential of the Albertine Graben of Uganda
(Acta Geologica Sinica‐English Edition, 2004)The Albertine Graben in western Uganda is a Mesozoic-Cenozoic rift basin with petroleum exploration potential. A fundamental evaluation of petroleum potential of the graben is given based on field research, data processing ... -
Geochemical Significance of Seepage Oils and Bituminous Sandstones in the Albertine Graben, Uganda
(Journal of Petroleum geology, 2004)Geochemical analysis of surface samples comprising three seepage oils, two bituminous sandstones and five shales collected from the Ugandan portion of the Albertine graben (a Cenozoic rift basin in Eastern Africa) indicates ... -
Effects of strain rate and temperature on the mechanical properties of resin composites
(Dental Materials, 2004)To evaluate the effects of strain rate and temperature on the mechanical properties of resin composite restorative materials (RCs) and to investigate the construction of temperature—strain rate equivalence ‘master curves’. ... -
Effects of resin formulation and nanofiller surface treatment on the properties of experimental hybrid resin composite
(Biomaterials, 2004)This study evaluated the effects of nanofiller surface treatment and resin viscosity on the early and long-term properties of experimental hybrid composites. Three resin formulations (low, medium and high viscosity) were ... -
Optical density and depth of cure in visible light-cured filled-resin dental restorative materials
(POLYMER PREPRINTS-AMERICA, 2004)The identification of the correct exposure (irradiance × time, I.t) of a direct-placement, visible light-cured, filled-resin dental restorative material in order to achieve “complete” reaction is of continuing concern. ... -
Cryptosporidiosis and Microsporidiosis in Ugandan Children with Persistent Diarrhea with and Without Concurrent
(The American Society of Tropical Medicine and Hygiene, 2005)Cryptosporidium spp. and Enterocytozoon bieneusi are enteric pathogens that have emerged as significant causes of persistent diarrhea (PD) in immunologically compromised individuals particularly in association with HIV/ ... -
Frequency Adjustment of Microelectromechanical Cantilevers using Electrostatic Pull Down
(Journal of Micromechanics and Microengineering, 2005)In this paper, a new way of actively tuning the resonant frequency of vibrating microelectromechanical devices by electrostatically adjusting the length of the resonating structure is explored. Variations in micromachining ... -
Towards A Sanitation Selection Algorithm For Enhancing Decentralized Service Delivery
(WEDC, Loughborough University, 2006)In Uganda, sanitation coverage is estimated at 53% and 39% for urban and rural areas respectively. The national coverage is 41%. Lack of proper sanitation potentially leads to environmental health problems, which in many ... -
MOVE: A Multi-level Ontology-based Visualization and Exploration framework for genomic networks
(Silico Biology, 2006)Among the various research areas that comprise bioinformatics, systems biology is gaining increasing attention. An important goal of systems biology is the unraveling of dynamic interactions between components of living ...
