Zobrazeno 1 - 10
of 2 855
pro vyhledávání: '"Birks P"'
We report the fabrication and characterisation of a multi-core anti-resonant hollow core fibre with low inter-core coupling. The optical losses were 0.03 and 0.08 dB/m at 620 and 1000 nm respectively, while the novel structure provides new insights i
Externí odkaz:
http://arxiv.org/abs/2409.14555
Publikováno v:
International Journal of COPD, Vol Volume 16, Pp 1887-1899 (2021)
Neil Patel,1,2 Kathryn Kinmond,1,3 Pauline Jones,1 Pamela Birks,1 Monica A Spiteri1 1Directorate of Respiratory Medicine, University Hospitals of North Midlands NHS Trust, Stoke-on-Trent, Staffordshire, UK; 2Directorate of Respiratory Medicine, Unive
Externí odkaz:
https://doaj.org/article/9b5999b4cb024eab9644881245db746a
Autor:
Harrington, Kerrianne, Mears, Robbie, Stone, James M., Wadsworth, William J., Knight, Jonathan C., Birks, T. A.
We have observed unexpected spectral attenuation of ultraviolet light in freshly drawn hollow core optical fibres. When the fibre ends are left open to atmosphere, this loss feature dissipates over time. The loss matches the absorption spectrum of ga
Externí odkaz:
http://arxiv.org/abs/2407.18674
Autor:
McGarry, Cameron, Harrington, Kerrianne, Goodwin, Daniel J., Perek-Jennings, Charles, Birks, Tim A., Rusimova, Kristina, Mosley, Peter J.
We present a low-loss, compact, hollow core optical fibre (HCF) cell integrated with single mode fibre (SMF). The cell is designed to be filled with atomic vapour and used as a component in photonic quantum technologies, with applications in quantum
Externí odkaz:
http://arxiv.org/abs/2401.10651
Autor:
Mears, Robbie, Harrington, Kerrianne, Wadsworth, William J., Knight, Jonathan C., Stone, James M., Birks, Tim A.
We report an anti-resonant hollow core fibre with ultraviolet transmission down to 190 nm, covering the entire UV-A, UV-B and much of the UV-C band. Guidance from 190 - 400 nm is achieved apart for a narrow high loss resonance band at 245 - 265 nm. T
Externí odkaz:
http://arxiv.org/abs/2310.07639
Publikováno v:
Climate of the Past, Vol 20, Pp 2373-2398 (2024)
Classical palaeoenvironmental reconstruction models often incorporate biological ideas and commonly assume that the taxa comprising a fossil assemblage exhibit unimodal response functions of the environmental variable of interest. In contrast, machin
Externí odkaz:
https://doaj.org/article/994aec2eb3f54ce582a6380e42a6ffc4
Autor:
Kuber P. Bhatta, Ondřej Mottl, Vivian A. Felde, John-Arvid Grytnes, Triin Reitalu, Hilary H. Birks, H. John B. Birks, Ole R. Vetaas
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract Spatio-temporal assessment of phylogenetic diversity gradients during the Holocene (past 12,000 years) provides an opportunity for a deeper understanding of the dynamics of species co-occurrence patterns under environmental fluctuations. Usi
Externí odkaz:
https://doaj.org/article/9af865601a2743b89dcf1182f80dd778
Publikováno v:
Crime Science, Vol 13, Iss 1, Pp 1-5 (2024)
Abstract Analyses of crime based upon aggregate counts of different crime types have restricted value, because they count all crime types equally irrespective of the harm caused. In response to this problem, a series of weighted measures of crime har
Externí odkaz:
https://doaj.org/article/5aa0e60ef8f74fbe8d3a9b7f46fc7b60
Autor:
Malleson, Nick, Birkin, Mark, Birks, Daniel, Ge, Jiaqi, Heppenstall, Alison, Manley, Ed, McCulloch, Josie, Ternes, Patricia
Publikováno v:
AI Communications 35, 393--406 (2022)
Agent-based modelling (ABM) is a facet of wider Multi-Agent Systems (MAS) research that explores the collective behaviour of individual `agents', and the implications that their behaviour and interactions have for wider systemic behaviour. The method
Externí odkaz:
http://arxiv.org/abs/2210.06955
Autor:
Ralph Smith, Rebecca Gould, Yvonne Kenworthy, Nerys Astbury, Iwan Smith, Jacqueline Birks, Paul Bateman, Jane E. Hirst, Susan Jebb, Moscho Michalopoulou, Richard Pulsford, Cristian Roman, Mauro Santos, Nicola Wango, Amy Wire, Lucy Mackillop
Publikováno v:
BMC Pregnancy and Childbirth, Vol 24, Iss 1, Pp 1-17 (2024)
Abstract Background Physical activity (PA) interventions have an encouraging role in gestational diabetes mellitus (GDM) management. Digital technologies can potentially be used at scale to support PA. The aim of this study was to assess the feasibil
Externí odkaz:
https://doaj.org/article/e66b6f1699f74feea89cabce8372f8cc