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| 2. |
- Edmonds, Y., et al.
(author)
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Estimate for GLAST LAT milky way Dark Matter WIMP line sensitivity
- 2007
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In: First GLAST Symposium. - : American Institute of Physics (AIP). - 9780735404311 ; , s. 514-515
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Conference paper (peer-reviewed)abstract
- The LAT Dark Matter and New Physics Working group has been developing approaches for the indirect astrophy sical detection of annihilation of dark matter. Our work has assumed that a significant component of dark matter is a new type of Weakly Interacting Massive Particle (WIMP). The annihilation of two WIMPs usually results in the production of many high energy gamma rays (>1 GeV) that can be well measured in the GLAST LAT if present. There is also the possibility to observe γ lines from annihilation into γγ and or γZ final states. In popular SUSY theories these line decays occur at the 10-4 to 10-2 branching fraction level. Estimates of LAT sensitivity (at 5σ above background) and upper limits (upper limit at the 95% confidence level) to these WIMP lines will be presented. These sensitivities are given in photons/cm2/sec/sr and so do not depend on the WIMP models. However, they do depend on the diffuse background model. The latter is derived from GALPROP [1] based on EGRET and other data in the EGRET energy range. We use extrapolations, provided by the GALPROP team to the higher energy range of 150 GeV explored in the preliminary line sensitivity study presented here. Comparison with theory depends upon the WIMP model (e.g., line energy and 1 or 2 lines), the DM halo model, and other astrophysics backgrounds. Thus estimates of the ability of the LAT to actually observe WIMP lines can vary over orders of magnitude depending upon which models are chosen.
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| 3. |
- Langer, S., et al.
(author)
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Indoor environment in Swedish passive houses
- 2014
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Conference paper (peer-reviewed)abstract
- The purpose of this study was to evaluate the indoor air quality (IAQ) in newly built low energy houses. Measurements were performed in 22 passive houses and 21 conventional buildings during 2012-2013 and 2013-2014 heating seasons. The measured parameters were temperature, relative humidity, concentration of CO2, NO2, formaldehyde, volatile organic compounds, and live microbiological flora. Air exchange rates (AER) were determined from the concentration-time profiles of CO2. The median AER was slightly higher in the passive houses than in conventional buildings (0.66 h-1 vs. 0.60 h-1). The median concentrations in passive houses and conventional buildings were 9.7 and 11 ÎŒg/m3, respectively, for NO2, 12 and 16 ÎŒg/m3 for formaldehyde, and 230 and 145 ÎŒg/m3 for TVOC. The indoor microbiological flora did not differ, with a few exceptions, from outdoors. The IAQ in the passive buildings was judged to be relatively good with regard to the parameters measured in this study.
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| 4. |
- Menoni, C. S., et al.
(author)
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Nanometer-scale imaging and ablation with Extreme Ultraviolet lasers
- 2007
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In: 2007 CONFERENCE ON LASERS & ELECTRO-OPTICS/QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2007), VOLS 1-5. - 9781424435906 ; , s. 1401-1402
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Conference paper (peer-reviewed)abstract
- The short wavelength and high brightness of compact extreme ultraviolet lasers is shown to enable the development of microscopes with spatial resolution of tens of nanometers and new types of nanoprobes.
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| 5. |
- Must, A., et al.
(author)
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Determination of mycoflora and mycotoxins in concealed constructions and in the indoor occupational space
- 2009
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Conference paper (peer-reviewed)abstract
- The causative agents of Building Related Illness are unknown but are thought to originate from chemical reactions and/or microbial growth caused by high water activity. The aim of this study was to apply direct determination of mycoflora and selected mycotoxins in building materials, settled and cultured airborne dust from preschools and daycare centers. The mycoflora on building materials was directly identified by light microscopy, viable airborne mold propagules counted using a Reuter Centrifugal Sampler, and settled dust was collected on surfaces above floor level. Mycotoxin analysis performed using gas-chromatography- and high pressure liquid chromatography- tandem mass spectrometry showed that mycotoxins are produced in hidden mold infested materials in the construction, that airborne mold from such materials have the capacity to produce mycotoxins, and that mycotoxins can be found in settled dust in the breathing zone.
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