Publications
21 results found
Agarwal G, McConkey Z, Hassard J, 2020, Optimisation of vortex tubes and the potential for use in atmospheric separation, Journal of Physics D: Applied Physics, Vol: 54, Pages: 1-9, ISSN: 0022-3727
Climate change requires us to extract hundreds of Gigatonnes of CO2 from the atmosphere over the next few decades. This requires we develop and scale up viable technologies to sequester CO2 from the highly dilute atmospheric concentrations. CO2 gas freezes at –78.5°C and thus, in principle, can be separated from air, the nitrogen in which begins to freeze at –210°C. Vortex Tubes were investigated as a potential method of carbon capture through a series of geometrical and procedural optimisations. Ambient air is compressed and then separated by temperature due to the action of the Vortex Tube. These optimisations determined an increase in system pressure and length at cold mass fraction of 40% led to increased cooling. The heat profile of pipes suggested radiative cooling as the vortex propagated. An optimised single tube reached a maximum cooling of 39.9±0.2°C. Vortex Tubes thus present a method of separating and capturing components of the atmosphere. With further work, such as the successful combination of tubes in series, it is hoped that Vortex Tubes may prove to be a scalable solution capable of contributing to the reduction in atmospheric CO2 using the Solar Cyclone Tower to provide the energy and air flows required for this task.
Aaij R, Collaboration L, Adeva B, et al., 2018, Measurement of the omega(0)(c) baryon lifetime, Physical Review Letters, Vol: 121, ISSN: 0031-9007
We report a measurement of the lifetime of the Ω0c baryon using proton-proton collision data at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment. The sample consists of about 1000 Ω−b→Ω0cμ−¯νμX signal decays, where the Ω0c baryon is detected in the pK−K−π+ final state and X represents possible additional undetected particles in the decay. The Ω0c lifetime is measured to be τΩ0c=268±24±10±2 fs, where the uncertainties are statistical, systematic, and from the uncertainty in the D+ lifetime, respectively. This value is nearly four times larger than, and inconsistent with, the current world-average value.
Ma Y, Richards M, Ghanem M, et al., 2008, Air pollution monitoring and mining based on sensor grid in London, Sensors, Vol: 8, Pages: 3601-3623, ISSN: 1424-8220
In this paper, we present a distributed infrastructure based on wireless sensors network and Grid computing technology for air pollution monitoring and mining, which aims to develop low-cost and ubiquitous sensor networks to collect real-time, large scale and comprehensive environmental data from road traffic emissions for air pollution monitoring in urban environment. The main informatics challenges in respect to constructing the high-throughput sensor Grid are discussed in this paper. We present a twolayer network framework, a P2P e-Science Grid architecture, and the distributed data mining algorithm as the solutions to address the challenges. We simulated the system in TinyOS to examine the operation of each sensor as well as the networking performance. We also present the distributed data mining result to examine the effectiveness of the algorithm.
Hassard J, 2007, Advances in Molecular Imaging, British Society of Mass Spectroscopists, Publisher: Royal Society of Chemistry
Hassard S, Baxter A, Hassard J, 2006, Advances in the Imaging of Biomolecules: The Label Free Intrinsic Imaging Approach, Advances in the Imaging of Biomolecules: The Label Free Intrinsic Imaging Approach, London, Publisher: Drug Discovery World
Richards M, Ghanem M, Osmond MA, et al., 2006, Grid based analysis of air pollution data, Ecological Modelling, Vol: 194, Pages: 274-286, ISSN: 0304-3800
In this paper, we present a distributed infrastrcuture basd on Grid compuing technoilogy and data integaration and mining tools to discuss the main informatics challenges that arise when a high-throughut sensor network is constructed to address real-time urban air pollution monitoring and modelling and describe the high -throughput sensors developed within this project to tackle th eproblem. we present a solution that addresses the informatics challenges based on the intehgartion of distributed sensors, Grid technologies, data integration, data mining and GIS systems. We also present a case study for examining the effectiveness of visual and automated methods developed for the analysis of generated data sets.
Hassard J, 2005, Enhanced molecule Detection in Capillary Electrophoresis Using Label FRee Intrinsic Imaging, American Electrophoresis Society, Publisher: AES
Hassard J, Hassard S, Osmond M, et al., 2004, Distributed biosensors in genetically modified crop trial monitoring., the 3rd UK e-Science All-Hands Conference
Hassard J, Rochester G, Pullen K, 2003, Apparatus for extracting power from a fluid flow., 09/719145
Hassard J, Cass A, 2003, Analysis of temperature-dependent molecular configurations, WO 03/036302A1
Hassard J, Hassard S, Mainwood A, 2003, Molecular Imaging, 6,613,210
Sir Eric Ash, Archer M, Barker T, et al., 2002, Economic instruments for the reduction of carbon dioxide emissions, Economic instruments for the reduction of carbon dioxide emissions, Publisher: Royal Society
LHCb, Collaboration, 2002, LHCb inner tracker : technical design report, CERN-LHCC, Geneva, Publisher: CERN, 2002-029
LHCb, Collaboration, 2001, LHCb online system, data acquisition and experiment control: technical design report, CERN-LHCC, Geneva, Publisher: CERN, 2001-040
Keith Barnham, Jose Luis Marques, Paul O'Brien, et al., 2000, Quantum-dot concentrator and thermodynamic model for the global redshift, Applied Physics Letters, Vol: 76, Pages: 1197-1199
Hassard JF, Smith RA, 2000, Optoelectronically gated microstructure, US6011296
Hassard JF, 2000, The role of renewables directive in meeting Kyoto targets, Royal Society document, Vol: 11
MacDonald JH, Mahon AR, Allers LA, et al., 1997, A CCD system for UV imaging of biomolecules, 4th International Conference on Position-Sensitive Detectors, Publisher: ELSEVIER SCIENCE BV, Pages: 227-232, ISSN: 0168-9002
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- Citations: 2
Mahon AR, Allers L, Ott RJ, et al., 1997, Preliminary results from CVD diamond detectors for biomolecular imaging, 4th International Conference on Position-Sensitive Detectors, Publisher: ELSEVIER SCIENCE BV, Pages: 274-280, ISSN: 0168-9002
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- Citations: 4
Allers L, Howard AS, Hassard JF, et al., 1997, Neutron damage of CVD diamond, 7th European Conf on Diamond, Diamond-Like and Related Materials (Diamond Films 96) / 5th International Conf on the New Diamond Science and Technology (ICNDST-5), Publisher: ELSEVIER SCIENCE SA LAUSANNE, Pages: 353-355, ISSN: 0925-9635
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- Citations: 20
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