1401 research outputs found
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Dataset associated with "Modelling of H2 production via sorption enhanced steam methane reforming at reduced pressures for small scale applications".
No full textThe production of H2 via sorption enhanced steam reforming (SE-SMR) of CH4 using 18 wt. % Ni/ Al2O3 catalyst and CaO as a CO2-sorbent was simulated for an adiabatic packed bed reactor at the reduced pressures typical of small and medium scale gas producers and H2 end users. To investigate the behaviour of reactor model along the axial direction, the mass, energy and momentum balance equations were incorporated in the gPROMS modelbuilder®. The effect of operating conditions such as temperature, pressure, steam to carbon ration (S/C) and gas mass flow velocity (Gs) was studied under the low-pressure conditions (2 – 7 bar). Independent equilibrium based software, chemical equilibrium with application (CEA), was used to compare the simulation results with the equilibrium data. A good agreement was obtained in terms of CH4 conversion, H2 yield (wt. % of CH4 feed), purity of H2 and CO2 capture for the lowest (Gs) representing conditions close to equilibrium under a range of operating temperatures pressures, feed steam to carbon ratio. At Gs of 3.5 kg m-2s-1, 3 bar, 923 K and S/C of 3, CH4 conversion and H2 purity were up to 89% and 86% respectively compared to 44% and 63% in the conventional reforming process
Dataset associated with "Terahertz Dielectric Property Characterization of Photopolymers for Additive Manufacturing"
No full textFigures and source data for the paper '0.2 – 1.4-THz Dielectric Property Characterization of Photopolymers for Additive Manufacturing': In this paper, resin-based photocurable polymer materials for stereolithography (SLA), digital-light-processing (DLP) and polymer-jetting (PolyJet) additive manufacturing techniques were characterized from 0.2 – 1.4 terahertz (THz) for their comprehensive dielectric properties, e.g. reflective index, absorption coefficient, dielectric constant and loss tangent, by using laser-based time-domain spectroscopy (TDS). Fourteen photocurable 3D-printing polymers were chosen due to their suitability, in terms of printing resolution, material characteristics and etc., for millimeter-wave (mm-wave) and THz applications. The propagation loss mechanism and other electrical/optical properties of the chosen photopolymers for terahertz radiation were determined by correlating absorption coefficients and loss tangents obtained from the measurements. To demonstrate the utilization of the selected photopolymers at THz spectrum, an asymptotically quasi-single-mode Bragg fiber microfabricated by DLP micromanufacturing technique using HTM140-V2 photopolymer was prototyped and characterized at the nominal frequencies from 0.246 to 0.276 THz. The measurement results show that the average propagation loss of the asymptotically single-mode THz Bragg fiber is less than 5dB/m for the whole band, which is the lowest propagation loss reported to date for asymptotically single-mode all-dielectric fiber at this frequency band
Data associated with ‘Development of a pre-clinical experimental simulation model of the natural porcine knee with appropriate ligamentous constraints’ University of Leeds. [Dataset].
No full textThe dataset will include all the data for figures in the manuscripts as shown in the followings:
Fig 2. Porcine kinematic input profiles.
Fig 5.Typical kinematic output profiles of A/P displacement and A/P shear force from the intact knee (all ligaments retained) and different spring free length conditions.
Fig 6. Comparison of differences of A/P displacement and A/P shear force under different free length conditions
Dataset associated with 'Non-invasive Millimeter-Wave Profiler for Surface Height Measurement of Photoresist Films'
No full textThis work presents a low-cost non-invasive millimeter-wave surface-height measurement sensor of dielectric and polymer films on glass and quartz substrates. The surface-height profiler utilizes near-field resonance measurement technique operating at 96 GHz implemented by using a single complementary split-ring resonator (CSRR) integrated with a tailor-made WR10 rectangular waveguide. By placing a glass or quartz substrate uniformly coated with SU-8 photoresist on top of the CSRR, the thickness of the SU-8 polymer can be extracted based on the reflected and transmitted electromagnetic-wave energy interacting at the electrical boundary between the substrate and polymer film. Uniform single layers of SU-8 polymer with thicknesses from 3 to 13 μm, coated on top of glass substrate are measured and characterized. The extracted polymer-film thicknesses from the sensor in this work show an agreement of higher than 95% as compared to the commercial surface profiler instrument, while offering various advantages e.g. non-invasion, ease of measurement setup, low-cost and miniaturization
Data for 'The study of atmospheric ice-nucleating particles via microfluidically generated droplets'
No full textIce-nucleating particles (INPs) play a significant role in the climate and hydrological cycle by triggering ice formation in supercooled clouds thereby causing precipitation and affecting cloud lifetimes and their radiative properties. However, despite their importance they often comprise only 1 in 10^3 to 10^6 ambient particles, making it difficult to ascertain and predict their type, source and concentration. The typical techniques for quantifying INP concentrations tend to be highly labour intensive, suffer from poor time resolution or are limited in sensitivity to low concentrations. Here, we present the novel application of microfluidic devices to the study of atmospheric INPs via the simple and rapid production of monodisperse droplets and their subsequent freezing on a cold stage. This device offers the potential for the testing of INP concentrations in aqueous samples with high sensitivity and high counting statistics. Various INP were tested for validation of the platform, including mineral dust and biological species, with results compared to literature values. We also describe a methodology for sampling atmospheric aerosol in a manner that minimises sampling biases and which is compatible with the microfluidic device. We present results for INP concentrations in air sampled during two field campaigns: (i) from a rural location in the UK, and (ii) during the UK’s annual Bonfire Night festival. These initial results will provide a route for deployment of the microfluidic platform for the study and quantification of INPs in upcoming field campaigns around the globe, whilst providing a benchmark for future lab-on-a-chip based INP studies
A methodology for the generation and non-destructive characterisation of transverse fractures in long bones – Data set.
No full textExperimental and computational data for all samples used in the pape
Data to support study of the speciation of homochiral and heterochiral diastereomers of homoleptic cobalt(II) and zinc(II) PyBox complexes
Get PDFHeterochiral [M((R)-LiPr)((S)-LiPr)]2+ (M = Zn or Co) partially racemises by ligand redistribution in CD3CN, whereas [M((R)-LPh)((S)-LPh)]2+ does not
Talking about Aldershot Map
No full textReflections in the studio during the process of making the 'Keep Off' painting. Reflections recorded on 2 July 2013. Video edited on 19 May 2014 to increase brightness and volume. Nothing has been cut. From phase two of the practice-led research project Painting as Emergent Knowledge. Referred to in Chapter Three
Digital story for Jetty making
No full textFrom digital reflection files recorded on 10th July 2013. From phase two of the practice-led research project Painting as Emergent Knowledge. Referred to in Chapter Four
The migration of gesture …
No full textThis digital reflection video forms part of the PhD project 'Painting as Emergent Knowledge' and is a digital story created from the third and final practice event, 'The Garden of Earthly Delights' which was held at stage@eeds on the 18th May 2017. This video is referred to in Chapter Five