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- Ahmed, M., et al.
(författare)
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Search for the lepton-family-number nonconserving decay μ +→e +γ
- 2002
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Ingår i: Physical Review D. - : American Physical Society. - 1550-7998 .- 1550-2368. ; 65:11
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Tidskriftsartikel (refereegranskat)abstract
- The MEGA experiment, which searched for the muon- and electron-number violating decay μ +→e + γ, is described. The spectrometer system, the calibrations, the data taking procedures, the data analysis, and the sensitivity of the experiment are discussed. The most stringent upper limit on the branching ratio, B(μ + →e + γ)<1.2×10 -11 with 90% confidence, is derived from a likelihood analysis.
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| 4. |
- Amann, F., et al.
(författare)
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A search for murarregamma at the level of 10-13
- 1991
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Ingår i: Proceedings of the 25th International Conference on High Energy Physics. - 9810024347 ; , s. 1070-1071
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Konferensbidrag (refereegranskat)abstract
- The MEGA experiment, which is a search for the decay murarregamma with a branching ratio sensitivity of about 10-13, employs highly modular, fast detectors, state-of-the-art electronics, and a staged trigger with on-line filters. The detectors are contained in a 1.5-T solenoidal field produced by a superconducting magnet. Positrons are confined to the central region and are measured by a set of thin MWPCs. Photons are measured by one of four layers of pair spectrometers in the outer region. Most aspects of the design have been validated in engineering runs; data taking will begin in 1990 with much of the electron arm and one pair spectrometer layer installed.
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| 6. |
- Awasthi, Mukesh Kumar, et al.
(författare)
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Biochemical engineering for elemental sulfur from flue gases through multi-enzymatic based approaches – A review
- 2024
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Ingår i: Science of the Total Environment. - 0048-9697 .- 1879-1026. ; 914
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Forskningsöversikt (refereegranskat)abstract
- Flue gases are the gases which are produced from industries related to chemical manufacturing, petrol refineries, power plants and ore processing plants. Along with other pollutants, sulfur present in the flue gas is detrimental to the environment. Therefore, environmentalists are concerned about its removal and recovery of resources from flue gases due to its activation ability in the atmosphere to transform into toxic substances. This review is aimed at a critical assessment of the techniques developed for resource recovery from flue gases. The manuscript discusses various bioreactors used in resource recovery such as hollow fibre membrane reactor, rotating biological contractor, sequential batch reactor, fluidized bed reactor, entrapped cell bioreactor and hybrid reactors. In conclusion, this manuscript provides a comprehensive analysis of the potential of thermotolerant and thermophilic microbes in sulfur removal. Additionally, it evaluates the efficacy of a multi-enzyme engineered bioreactor in this process. Furthermore, the study introduces a groundbreaking sustainable model for elemental sulfur recovery, offering promising prospects for environmentally-friendly and economically viable sulfur removal techniques in various industrial applications.
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| 7. |
- Bagshaw, D, et al.
(författare)
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Bridging the fields of drama and conflict management
- 2007
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Ingår i: DRACON International: Empowering students to handle conflicts through school based programmes. - Malmö : MUEP (Malmö University Electronic Publishing). - 918881033X ; , s. 45-129
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Researchers from Australia, Malaysia and Sweden form part of DRACON International (DRAma for CONflict management) and share the basic view that drama can be an effective way for adolescents to learn to handle conflicts constructively. The main aims of the DRACON project have been: -to develop research methods in order to map students´ conflicts and strategies for handling conflicts and to study the effects of various drama exercises on individual, class and school levels; -to contribute to the development of a theory of conflict processes in different cultures in order to explain the effects of different types of interference´s in adolescents´ conflicts; -to develop and test integrated drama programmes giving adolescents in the three different cultures the opportunity of handling conflicts in a more constructive way. This book is the result of several years of collaborative teamwork between researchers from Australia, Malaysia and Sweden and aims at providing a starting-point for further development of drama and conflict management in educational settings.
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| 8. |
- Barney, Andrew, et al.
(författare)
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Transition towards decarbonisation for islands : Development of an integrated energy planning platform and application
- 2021
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Ingår i: Sustainable Energy Technologies and Assessments. - : Elsevier BV. - 2213-1388 .- 2213-1396. ; 47
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents REACT-DECARB, an energy planning decarbonisation platform employing renewable energy sources coupled with storage for islands. The paper implements the energy scenario creation and economic evaluation steps of the platform on eight geographic islands in seven countries within the EU. Twenty-one technologically feasible energy scenarios, applicable to the specific conditions of each island, are specified and their economic assessment via a levelized cost of energy (LCOE) calculation is then performed. The main aim of this application is to verify the noted steps of the platform as well as to test its flexibility across geographically, socially and dimensionally disparate islands with various scenario generation methods. The results of the economic analysis show a wide variation of LCOE depending primarily on whether full island autonomy is assumed. In some cases the islands’ scenarios’ costs approach current market prices but are never below them; some scenarios are, however, below the current price of the island’s thermal generation. The sensitivity and uncertainty of the economic performance results’ and the variables used to calculate them are evaluated and discussed for two of the islands. The overall analysis and application has shown that the REACT-DECARB platform is suitable for different islands, regardless of location and size and can be useful for island energy planners.
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| 10. |
- Beatrez, William, et al.
(författare)
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Critical prethermal discrete time crystal created by two-frequency driving
- 2023
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Ingår i: Nature Physics. - : Springer Nature. - 1745-2473 .- 1745-2481. ; 19:3, s. 407-413
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Tidskriftsartikel (refereegranskat)abstract
- Discrete time crystals are non-equilibrium many-body phases of matter characterized by spontaneously broken discrete time-translation symmetry under periodic driving. At sufficiently high driving frequencies, the system enters the Floquet prethermalization regime, in which the periodically driven many-body state has a lifetime vastly exceeding the intrinsic decay time of the system. Here, we report the observation of long-lived prethermal discrete time-crystalline order in a three-dimensional (3D) lattice of 13C nuclei in diamond at room temperature. We demonstrate a two-frequency driving protocol, involving an interleaved application of slow and fast drives that simultaneously prethermalize the spins with an emergent quasi-conserved magnetization along the x̂ axis. This enables continuous and highly resolved observation of their dynamic evolution. We obtain videos of the time-crystalline response with a clarity and throughput orders of magnitude greater than previous experiments. Parametric control over the drive frequencies allows us to reach time-crystal lifetimes of up to 396 Floquet cycles, which we measure in a single-shot experiment. Such rapid measurement enables detailed characterization of the entire phase diagram, highlighting the role of prethermalization in stabilizing the time-crystal response. The two-frequency drive approach expands the toolkit for investigating non-equilibrium phases of matter stabilized by emergent quasi-conservation laws.
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