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Digitale Medien

Studies of nanoscale dynamics using coherent x rays from an x-ray free electron laser (abstract) (invited) : Papers from the 12th National Synchrotron Radiation Instrumentation Conference (2002)

Stephenson, G. Brian

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 73 (2002), S. 1367-1367

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ISSN: 1089-7623

Quelle: AIP Digital Archive

Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik

Notizen: This talk will describe proposed studies of atomic- and nanoscale dynamics in condensed matter which take advantage of the high coherent x-ray flux to be produced by future x-ray free-electron laser (FEL) sources, such as the Linac Coherent Light Source at Stanford. In particular, I will focus on the current status and future prospects for photon correlation spectroscopy using coherent x-rays (XPCS), and the use of the ultrashort pulse structure of the x-ray FEL to observe dynamics into the femtosecond range. © 2002 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1448148

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Assessment of Microbial Populations in Activated Sludge Using an Organism Diversity Index (2002)

Burgess, J. E. ; Mayhew, M. E. ; Stephenson, T. ; [weitere]

Oxford, UK : Blackwell Publishing Ltd

Water and environment journal 16 (2002), S. 0

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ISSN: 1747-6593

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Energietechnik

Notizen: An organism diversity index for use with mixed liquor or wastewater samples was developed to assess the species richness and diversity of activated sludge. The index was used in several studies and was found to be fast and simple to perform using basic laboratory equipment. Two bench-scale and two pilot-scale studies found that the resulting ‘organism diversity index’value was a good indicator of process performance and was not influenced by the total concentration of the mixed-liquor suspended solids but by their nature alone. The technique rapidly yielded pertinent information about the health of the sludge and could be used instead of genetic investigations to obtain population information quickly enough for wastewater-treatment plant process control.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1747-6593.2002.tb00366.x

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Air Quality in Norwich, UK Multi-Scale Modelling to Assess the Significance of City, County and Regional Pollution Sources (2000)

Chatterton, T. ; Dorling, S. ; Lovett, A. ; [weitere]

Springer

Environmental monitoring and assessment 65 (2000), S. 425-433

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ISSN: 1573-2959

Schlagwort(e): PM10 ; urban air quality ; background ; NAME ; ADMS ; long range transport ; air pollution ; particulates ; nitrogen dioxide ; sulphur dioxide

Quelle: Springer Online Journal Archives 1860-2000

Thema: Energietechnik

Notizen: Abstract Norwich is the eastern most city in the United Kingdom. Despite a population of only 100,000 and very little local industry, studies have shown that the city experiences levels of nitrogen dioxide, ozone, particulates and sulphur dioxide exceeding the UK Air Quality Standards. Because of Norwich's situation within a large, predominantly rural area a large non-resident workforce is one factor that contributes to large, often very congested traffic flows. The city's location close to the European mainland also exposes it to polluted airmasses transported from the continent, especially in the case of particulates and ozone. In order to assess the relative contributions of local and regional sources, data from rural and urban monitoring sites are to be used in conjunction with ADMS-Urban and the UK Meteorological Office's NAME model.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1006477112407

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