Donovan, MJ, Puig, P, Erill, N, Clayton, M, Hamann, S, Khan, F, ...
No abstract available.
Integrity management in GUARDS (2009)
E. Totel, Lj. Beus-dukic, Y. Deswarte, D. Powell
We present an approach for the management of highly critical tasks coexisting with non-critical tasks in a single processor or multiprocessor architecture. To prevent error propagation from...
Comparison of Molecular Markers to Detect Fresh Sewage in Environmental Waters (2009)
Ahmed, W, Goontilleke, A, Powell, D, Chauhan, K, Gardner, T
Human-specific Bacteroides HF183 (HS-HF183), human-specific E. faecium esp (HS-esp), human-specific adenoviruses (HS-AVs) and human-specific polyomaviruses (HS-PVs) assays were evaluated in...
Global gene expression in skeletal muscle from well-trained strength and endurance athletes (2009)
Stepto, N, Coffey, V, Carey, A, Ponnampalam, A, Canny, B, Powell, D, ...
Purpose: We used gene microarray analysis to compare the global expression profile of genes involved in adaptation to training in skeletal muscle from chronically strength-trained (ST),...
Evaluation of Bacteroides markers for the detection of human faecal pollution (2008)
Ahmed, W, Stewart, J, Powell, D, Gardner, T
Aims: This paper reports on the results of a study aimed at evaluating the specificity and sensitivity of human-specific HF183 and HF134 Bacteroides markers in various host groups and their utility...
Ahmed, W, Stewart, J, Gardner, T, Powell, D
A real-time polymerase chain reaction (PCR) assay using SYBR Green I dye was developed to quantify the Enterococcus faecium enterococci surface protein (esp) marker in sewage (n = 16) and...
Ahmed, W, Stewart, J, Powell, D, Gardner, T
The suitability of the enterococci surface protein (esp) marker to detect human fecal pollution was evaluated by testing 197 fecal samples from 13 host groups in Southeast Queensland, Australia....
Ahmed, W, Powell, D, Goonetilleke, A, Gardner, T
Multiple host-specific molecular markers were used to detect the sources of faecal pollution in a mixed land use non-sewered catchment in Southeast Queensland, Australia. These markers included...
Ahmed, W, Stewart, J, Gardner, T, Powell, D, Brooks, P R, Sullivan, D, ...
Library-dependent (LD) (biochemical fingerprinting of Escherichia coli and enterococci) and library-independent (LI) (PCR detection of human-specific biomarkers) methods were used to detect human...
Sadek, A, Powell, D, Wlodarski, W, Kalantar-Zadeh, K
A template-free rapidly mixed reaction was employed to synthesize polyaniline nanofibers using chemical oxidative polymerization of aniline. Hydrochloric acid (HCl) and camphor sulfonic acid (CSA)...
Spatial sensitivity distribution of surface acoustic wave resonator sensors (2007)
Powell, D, Kalantar-Zadeh, K, Wlodarski, W
The sensitivity distribution of surface acoustic wave (SAW) resonator sensors is investigated by theoretical and experimental means. It is shown that the sensitivity to mass loading varies strongly...
Storage Tradeoffs in a Collaborative Backup Service for Mobile Devices (2006)
M. Banâtre, C. Bryce, L. Blain, P. Couderc, L. Courtès, ...
The objective of this report is to give an overview of the MoSAIC project after 18 months, halfway through the lifetime of the project. In addition to the progress overview per se, the report...
Kalantar-Zadeh, K, Powell, D, Sadek, A, Wlodarski, W, Yang, Q, Li, Y
The performance of ZnO/64 degrees-YX LiNbO3 and ZnO/36 degrees-YX LiTaO3 layered SAW structures was compared in terms of mass sensitivity and acoustic wave velocity. It was found that the ZnO/64...
Study of a ZnO/36º LiTaO3 SAW Biosensor with gold sensitive layer (2006)
Kalantar-Zadeh, K, Wlodarski, W, Powell, D, Vojisavljevic, V, Pirogova, E, Cosic, I, ...
Abstract not available.
Powell, D, Kalantar-Zadeh, K, Ippolito, S, Wlodarski, W
Properties of propagation modes for a layered ZnO/XZ LiNbO3 surface acoustic wave sensor have been investigated both theoretically and experimentally. By calculating the effective permittivity...
H2 and NO2 gas sensors with ZnO nanobelt layer on 36° LiTaO3 and 64° LiNbO3 SAW transducers (2005)
Sadek, A, Wlodarski, W, Kalantar-Zadeh, K, Powell, D, Hughes, W, Wang, Z
Single crystal nanobelts of ZnO were synthesized and deposited onto 36° YX LiTaO3 and 64° YX LiNbO3 surface acoustic wave (SAW) devices for gas sensing applications. Sensor response, defined as the...
Optimum sensitive area of surface acoustic wave resonator chemical and bio-sensors (2005)
Kalantar-Zadeh, K, Powell, D, Wlodarski, W
A model is developed to map the variation of sensitivity of a surface acoustic wave (SAW) resonator sensor over its surface, in order to find the region with maximum sensitivity. The model is based...
Optimization of film thickness for thermoelectric micro-Peltier (2005)
Kandasamy, S, Pachoud, D, Powell, D, Kalantar-Zadeh, K, Holland, A, Wlodarski, W
In this paper, the design of a thin film thermoelectric microcooler module is examined. The module consists of n-type bismuth telluride and p-type antimony telluride thermoelectric materials. The...
On Fault Tolerance and Robustness in Autonomous Systems (2004)
B. Lussier, R. Chatila, F. Ingrand, M.O. Killijian, D. Powell
This paper sets the context of dependability and autonomy, and focuses on two non-exclusive approaches aiming to improve dependability: fault tolerance and robustness. The paper gives definitions of...
Numerical calculation of SAW sensitivity: application to ZnO/LiTaO3 transducers (2004)
Powell, D, Kalantar-Zadeh, K, Wlodarski, W
A technique for analysing the sensitivity of a surface acoustic wave (SAW) device is presented, based on the numerically obtained Green's function. It is applied to devices based on a 36degrees-YX...
TEPC measurements in commercial aircraft (2004)
Taylor, G. C., Bentley, R. D., Horwood, N. A., Hunter, R., Iles, R. H., Jones, J. B. L., ...
The collaborative project involving the Mullard Space Science Laboratory (MSSL), Virgin Atlantic Airways (VAA), the UK Civil Aviation Authority (CAA) and the UK National Physical Laboratory (NPL) has...
The International HapMap Project (2003)
Gibbs, RA, Belmont, JW, Hardenbol, P, Willis, TD, Yu, FL, Yang, HM, ...
Peer Reviewed
A. Adelsbach, D. Aless, C. Cachin, S. Creese, Y. Deswarte, K. Kursawe, ...
are stored in PDF, with the report number as filename. Alternatively, reports are available by post from the above address.
A study of CO sensors with oscillatory response (2003)
Li, L, Wlodarski, W, Galatsis, K, Powell, D
In this paper, oscillatory changes in the conductance of catalyst-doped SnO2 semiconductor materials in the presence of CO gas are investigated. The sensors with various transducing structures of...
Comparison of layered based SAW sensors (2003)
Kalantar-Zadeh, K, Powell, D, Wlodarski, W, Ippolito, S, Galatsis, K
A comprehensive investigation of layered surface acoustic wave (SAW) devices is presented. These types of SAW devices have a remarkable performance for gas and liquid sensing applications as...
A layered SAW device based on ZnO/LiTaO3 for liquid media sensing applications (2002)
Powell, D, Kalantar-Zadeh, K, Ippolito, S, Wlodarski, W
Surface Acoustic Wave (SAW) sensors comprising a zinc oxide guiding layer deposited on a 36°-YX lithium tantalate substrate were developed. They were found to have greater mass sensitivity than...
Finite element analysis for simulation of layered SAW devices with XY LiNbO3 (2002)
Ippolito, S, Kalantar-Zadeh, K, Wlodarski, W, Powell, D
A finite-element method is employed to model layered Surface Acoustic Wave (SAW) two port delay lines, with a zinc oxide (ZnO) thin film guiding layer. The structure is based on x-cut, y-propagating...
A. Adelsbach, D. Aless, C. Cachin, S. Creese, M. Dacier, Y. Deswarte, ...
are stored in PDF, with the report number as filename. Alternatively, reports are
Cloning and characterization of a novel human dual flavin reductase (2000)
Paine, MJI, Garner, AP, Powell, D, Sibbald, J, Salès, Matthieu; U0050716, Pratt, N, ...
Flavoprotein reductases play a key role in electron transfer in many physiological processes. We have isolated a cDNA with strong sequence similarities to cytochrome P-450 reductase and nitric-oxide...
Compression and approximate matching (1999)
L. Allison, D. Powell, T. I Dix
A population of sequences is called non-random if there is a statistical model and an associated compression algorithm that allows members of the population to be compressed, on average. Any...
PADRE: A Protocol for Asymmetric Duplex REdundancy (1999)
D. Essamé, J. Arlat, D. Powell
Safety and availability are issues of major importance in many critical systems. Ensuring simultaneously both attributes is sometimes difficult. Indeed, the introduction of redundancy to increase the...
GUARDS: A Generic Upgradable Architecture for Real-Time Dependable Systems (1999)
D. Powell, J. Arlat, A. Bondavalli, A. Fantechi, E. Jenn, C. Rabéjac
Personal use of the material in this paper is permitted. However, permission to reprint or republish this material for advertising or promotional purposes or for creating new works for resale or...
GUARDS: A Generic Upgradable Architecture for Real-Time Dependable Systems (1999)
D. Powell, J. Arlat, L. Beus-dukic, A. Bondavalli, Ieee Computer Society, A. Fantechi, ...
AbstractÐThe development and validation of fault-tolerant computers for critical real-time applications are currently both costly and time consuming. Often, the underlying technology is out-of-date...
Compression and approximate matching (1999)
Allison, L, Powell, D., Dix, TI
A population of sequences is called non-random if there is a statistical model and an associated compression algorithm that allows members of the population to be compressed, on average. Any...
Real-Time Scheduling in a Generic Fault-Tolerant Architecture (1998)
A. J. Wellings, Lj. Beus-dukic, D. Powell
Previous ultra-dependable real-time computing architectures have been specialised to meet the requirements of a particular application domain. Over the last two years, a consortium of European...
State Restoration in a COTS-based N-Modular Architecture (1998)
A. Bondavalli, F. Di Gi, F. Gr, D. Powell, C. Rabejac
Personal use of the material in this paper is permitted. However, permission to reprint or republish this material for advertising or promotional purposes or for creating new works for resale or...
Available Fail-Safe Systems (1997)
D. Essame, J. Arlat, D. Powell
Continuity of service and cost-effectiveness are adding new challenges to life critical systems over and above the underlying safety concerns. The introduction of redundant components is a necessary...
Genericity and Upgradability in Ultra-Dependable Real-Time Architectures (1996)
A. Wellings, Lj. Beus-dukic, A. Burns, D. Powell
We report on the ideas currently being developed within the European GUARDS project to develop a generic upgradable architecture for real-time dependable systems. After a brief introduction and...
Genericity and Upgradability in Ultra-Dependable Real-Time Architectures (1996)
Wellings Lj, A. Wellings, Lj. Beus-dukic, A. Burns, D. Powell
We report on the ideas currently being developed within the European GUARDS project to develop a generic upgradable architecture for real-time dependable systems. After a brief introduction and...
Genericity and Upgradability in Ultra-Dependable Real-Time Architectures (1996)
A. Wellings, Lj. Beus-dukic, A. Burns, D. Powell
We report on the ideas currently being developed within the European GUARDS project to develop a generic upgradable architecture for real-time dependable systems. After a brief introduction and...
Flight Trials of the Wide-Area Augmentation System (WAAS) (1994)
Walter Kee Chao, T. Walter, C. Kee, Y. C. Chao, Y. J. Tsai, U. Peled, ...
The Wide-Area Augmentation System (WAAS) is being rapidly developed by the Federal Aviation Administration for supplemental operational use in 1997. In time, it will be a primary navigation aid for...
CHRISTYS, A. R., MOSS, E., POWELL, D.
Retrospective analysis of the case records of 383 patients undergoing elective intracranial surgery showed that, in the first 24 h after surgery, 13.9% of patients receiving low concentrations...
Bone and Mineral Metabolism and Chronic Alcohol Abuse (1986)
LALOR, B. C., FRANCE, M. W., POWELL, D., ADAMS, P. H., COUNIHAN, T. B.
Studies of bone and mineral metabolism were made in 22 patients with chronic alcohol abuse and varying degrees of liver damage. None of the patients had clinical evidence of metabolic bone disease,...
EFFECT OF ETOMIDATE ON INTRACRANIAL PRESSURE AND CEREBRAL PERFUSION PRESSURE (1979)
MOSS, E., POWELL, D., GIBSON, R. M., McDOWALL, D. G.
Ten patients with intracranial lesions, anaesthetized with thiopentone and nitrous oxide (70%) in oxygen (30%) received etomidate 0.2 mg kg−1 i.v. Ventilation was controlled in each...
MOSS, E., POWELL, D., GIBSON, R. M., MCDOWALL, D. G.
Ten patients presenting for craniotomy were studied. Each was anaesthetized with thiopentone or Althesin followed by tubocurarine and the lungs were hyperventilated with nitrous oxide in oxygen....
MOSS, E., POWELL, D., GIBSON, R. M., MCDOWALL, D. G.
Intracranial pressure (i.c.p.) and mean arterial pressure (m.a.p.) were studied in 20 patients during the induction of anaesthesia for craniotomy. Tubocurarine was administered as the muscle relaxant...
TURNER, J. M., POWELL, D., GIBSON, R. M., McDOWALL, D. G.
Intracranial pressure has been measured in 45 patients undergoing neurosurgery during the induction of deliberate hypotension using either sodium nitroprusside or trimetaphan. A statistically...
THE EFFECT OF ALTHESIN ON INTRACRANIAL PRESSURE IN MAN (1973)
TURNER, J. M., CORONEOS, N. J., GIBSON, R. M., POWELL, D., NESS, M. A., McDOWALL, D. G.
The intravenous administration of Althesin 50 µ/kg to 9 patients undergoing neuro-surgery during general anaesthesia with controlled ventilation resulted in a fall in intra-cranial pressure (i.c.p.)...
Parathyroid Acidosis in Uraemia (1972)
MULDOWNEY, F. P., DONOHOE, J. F., CARROLL, D. V., POWELL, D., FREANEY, R.
Acidosis in uraemia is more closely related to the severity of renal bicarbonate wastage than to limitation of ammonium and titratable acid excretion. Reduction in maximum tubular reabsorptive...