2,610 research outputs found
Slope-matched dispersion-compensating photonic crystal fibre
No full textBrian J. Mangan, Francois Couny, Lance Farr, Alan Langford, P John. Roberts, David P. Williams, Matthew Banham, Matt W. Mason, Dominic F. Murphy, Elsa A. M. Brown, Hendrik Sabert, Tim A. Birks, Jonathan C. Knight, and Philip St. J. Russel
Publishing Time Dependent Oceanographic Visualizations using VRML
No full textOceanographic simulations generate time dependent data; thus, visualizations of this data should include and realize the variable `time'. Moreover, the oceanographers are located across the world and they wish to conveniently communicate and exchange these temporal realizations. This publication of material may be achieved using different methods and languages. VRML provides one convenient publication medium that allows the visualizations to be easily viewed and exchanged between users. Using VRML as the implementation language, we describe five categories of operation. The strategies are determined by the level of calculation that is achieved at the generation stage compared to the playing of the animation. We name the methods: 2D movie, 3D spatial, 3D flipbook, key frame deformation and visualization program
An Open Framework for Integrating Widely Distributed Hypermedia Resources
No full textThe success of the WWW has served as an illustration of how hypermedia functionality can enhance access to large amounts of distributed information. However, the WWW and many other distributed hypermedia systems offer very simple forms of hypermedia functionality which are not easily applied to existing applications and data formats, and cannot easily incorporate alternative functions which would aid hypermedia navigation to and from existing documents that have not been developed with hypermedia access in mind. This paper describes the extension to a distributed environment of the open hypermedia functionality of the Microcosm system, which is designed to support the provision of hypermedia access to a wide range of source material and application, and to offer straightforward extension of the system to incorporate new forms of information access
The Knight on the Threshold: a Thematic and Anthropological Study of the English Gawain Romances
No full textsj-pdf-1-obm-10.1177_1753495X221076713 - Supplemental material for Monitoring the safety of COVID-19 vaccination in pregnancy in the UK: A national study using the UK Obstetric Surveillance System (UKOSS), UK Teratology Information Service (UKTIS) and Vaccination in Pregnancy (VIP) safety monitoring systems
No full textSupplemental material, sj-pdf-1-obm-10.1177_1753495X221076713 for Monitoring the safety of COVID-19 vaccination in pregnancy in the UK: A national study using the UK Obstetric Surveillance System (UKOSS), UK Teratology Information Service (UKTIS) and Vaccination in Pregnancy (VIP) safety monitoring systems by Jonathan L Richardson, Sally Stephens, Lucy C Chappell, Helen Campbell, Gayatri Amirthalingam, Shennae O’Boyle, Antoaneta Bukasa, Marian Knight and Kenneth K Hodson in Obstetric Medicine</p
Stem cell mechanobiology
No full textStem cells are undifferentiated cells that are capable of proliferation, self-maintenance and differentiation towards specific cell phenotypes. These processes are controlled by a variety of cues including physicochemical factors associated with the specific mechanical environment in which the cells reside. The control of stem cell biology through mechanical factors remains poorly understood and is the focus of the developing field of mechanobiology. This review provides an insight into the current knowledge of the role of mechanical forces in the induction of differentiation of stem cells. While the details associated with individual studies are complex and typically associated with the stem cell type studied and model system adopted, certain key themes emerge. First, the differentiation process affects the mechanical properties of the cells and of specific subcellular components. Secondly, that stem cells are able to detect and respond to alterations in the stiffness of their surrounding microenvironment via induction of lineage-specific differentiation. Finally, the application of external mechanical forces to stem cells, transduced through a variety of mechanisms, can initiate and drive differentiation processes. The coalescence of these three key concepts permit the introduction of a new theory for the maintenance of stem cells and alternatively their differentiation via the concept of a stem cell 'mechano-niche', defined as a specific combination of cell mechanical properties, extracellular matrix stiffness and external mechanical cues conducive to the maintenance of the stem cell population.<br/
Conformational dependence of through-space tellurium-tellurium spin-spin coupling in peri-substituted bis(tellurides)
No full textThe work in this project was supported by the Engineering and Physical Sciences Research Council (EPSRC). M.B. wishes to thank EaStCHEM and the University of St Andrews for support.Three related series of peri‐substituted bis(tellurides) bearing naphthalene, acenaphthene and acenaphthylene backbones (Nap/Acenap/Aceyl(TeY)2 (Nap=naphthalene‐1,8‐diyl N ; Acenap=acenaphthene‐5,6‐diyl A ; Aceyl=acenaphthylene‐5,6‐diyl Ay ; Y=Ph 1 ; Fp 2 ; Tol 3 ; An‐p 4 ; An‐o 5 ; Tp 6 ; Mes 7 ; Tip 8 ) have been synthesised and their solid‐state structures determined by X‐ray crystallography. Molecular conformations were classified as a function of the two C9‐C‐Te‐C(Y) dihedral angles (θ); in the solid all members adopt AB or CCt configurations, with larger Te(aryl) moieties exclusively imposing the CCt variant. Exceptionally large J(125Te,125Te) spin–spin coupling constants between 3289–3848 Hz were obtained for compounds substituted by bulky Te(aryl) groups, implying these species are locked in a CCt‐type conformation. In contrast, compounds incorporating smaller Te(aryl) moieties are predicted to be rather dynamic in solution and afford much smaller J values (2050–2676 Hz), characteristic of greater populations of AB conformers with lower couplings. This conformational dependence of through‐space coupling is supported by DFT calculations.Peer reviewe
Multiple Window Visualization on the Web using VRML and the EAI
No full textVisualization exploration is often aided through the use of multiple views. Such techniques enable the user to observe the visualization through different forms (multiform) and to navigate the visualization via different methods. The web provides a convenient publication medium for visualizations; allowing remote access for observation and investigation of the realizations. Thus, it seems wise to investigate Multiple View visualization on the web. Indeed, we have successfully used VRML, Java and the EAI to develop such web-based multiple view visualizations. We believe that multiple window techniques are useful to present visualization on the web, and may be useful for other virtual worlds
Describing equality
No full textAn earlier version of this article was presented to the Historical, International, Normative Theory (HINT) group at the University of Glasgow. I would like to thank the participants on that occasion, and also Richard Arneson, Jonathan Quong, Hillel Steiner, Stephen de Wijze and an anonymous referee for their helpful written comments. Research for the article was supported by the Arts and Humanities Research Council
Dataset for ''Continuous-Wave Mid-Infrared Gas Fiber Lasers''
No full textThe dataset include all necessary data to generate figures 1, 4 (b), 4(c), 5–8 in the associated manuscript, "Continuous-Wave Mid-Infrared Gas Fiber Lasers". These data measure the properties of the lasers under different conditions, including different gas pressures and fiber lengths.1. Figure_1_original_absorption_intensity_strength_from_HITRAN.csv contains the orignal downloaded data from HITRAN database. MATLAB code is to convert the absorption intensity to the spectral transmittance per meter in fig.1.
2. Figure_4_b_input_spectra.csv contains the measured EDFA output spectrum for different amplifications in fig.4 (b).
3. Figure_4_c_fiber_attenuation.csv contains the measured hollow core fiber attenuations in fig.4 (c).
4. Figure_5_a_output_power_at_different_pressures_incident_power.csv contains the measured output laser power as a function of incident power at different pressures in fig.5 (a).
5. Figure_5_b_output_power_at_different_pressures_absorbed_power.csv contains the measured output laser power as a function of absorbed power at different pressures in fig.5 (b).
6. Figure_6_a_max_3_microns_power.csv contains the maximum output laser power as a function of the pressure for different fiber lengths in fig.6 (a).
7. Figure_6_b_threshold.csv shows the lasing threshold as a fuction of pressure for different fiber lengths (6m, 15m, 40m) in fig.6 (b).
8. Figure_7_P_P_ratio.csv contains the laser peak intensity via P(9) transition over the one via R(7) transition as a function of incident pump power in fig.7.
9. Figure_7_inset_output_spectrum.csv contains the normalized laser spectrum at 3 micron in fig.7 inset.
10. Figure_8_a_absorbed_spectrum.csv contains the typical measured spectra when pump light is tuned on and off P(9) wavelength in fig.8 (a).
11. Figure_8_b_fiber_side_length.csv contains the pump absorption as a function of position along 15 m fiber for different incident powers at 0.6 mbar pressure in fig.8 (b).
12. Figure_8_c_fiber_side_different_pressures.csv contains the pump absorption as a function of position along 31m fiber at different pressures with full incident power in fig.8 (c).
13. Figure_8_c_inset.csv contains the caculated pump absorption slope efficiency as a function of pressure in fig.8 (c) inset
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