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Dataset associated with 'Morphological Control of Seedlessly--Synthesised Gold Nanorods using Binary Surfactants’
No full textTEM, UV-Vis and darkfield data associated with synthesised samples. Paper URL: https://doi.org/10.1088/1361-6528/aaa99
Climate model data presented in 'Holocene lowering of the Laurentide ice sheet affects North Atlantic gyre circulation and climate'
No full textOutput from a set of 5 equilibrium global climate simulations of the early Holocene period run with the HadCM3 general circulation model. The simulations correspond to 9.5 ka (tdqqc), 9.0 ka (tdqqd), 8.5 ka (tdqqe), 8.0 ka (tdqqf) and 0 ka (tdqqa), where ka is thousands of years before present and are fully described in the accompanying paper. The data is provided in NETCDF format. It consists of the surface orography used as a boundary conditions (i.e. input) and model output for each simulation. Model output is provided as monthly, seasonal and annual climatological means and standard deviation calculated over the last 100 years of each experiment for a range of atmospheric and ocean model output. Output fields include precipitation, surface air temperature, winds, geopotential height, atmospheric pressure, ocean temperature, salinity, velocity, depth of the oceanic mixed layer, sea ice concentration and ocean stream functions as well as a range of other climate variables
Data associated with 'Using Confinement To Study the Crystallization Pathway of Calcium Carbonate'
Get PDFStudies of crystallization in small volumes have shown that constraining the space in which precipitation occurs
can provide an effective means of studying the pathways by
which crystallization occurs. This article describes an investigation into the precipitation of calcium carbonate in a crossedcylinder
apparatus, where the confinement of low solution
concentrations between unfunctionalized glass surfaces delivers a dramatic increase in the lifetime of metastable phases. This
phenomenon allows the direct observation of amorphous
calcium carbonate (ACC) in very dilute systems where it is
virtually undetectable in bulk solution, thus confirming the predictions of a recent titration study which showed that the solubility product of ACC is an order of magnitude lower than previously believed. The aggregation of ACC particles is also seen to significantly decrease with increasing confinement, suggesting that the stability of ACC in confinement is related to its
aggregation state and restricted mobility. Finally, we observe that ACC transforms to calcite via the metastable phase vaterite in
constrained volumes at solution concentrations where direct transformation to calcite occurs in bulk solution. This work
underscores the utility of using confinement to detect and preserve transient metastable phases in bulk solution, where this may
have applications in materials syntheses utilizing amorphous precursor phases
Data associated with 'Invasive alien shredders clear up invasive alien leaf litter'
No full textBiological invasions have the potential to alter ecosystem processes. However, interactions between different invasive alien species, and their cumulative impact on ecosystem functioning remain poorly understood. Some invasive riparian plants (e.g. Rhododendron) deposit leaf litter in freshwaters, that may be unconsumed by indigenous species potentially affecting habitat heterogeneity and flow of energy to the food web. Invasive alien decapod crustaceans are effective consumers of leaf litter, and it was hypothesised that they would consume inputs of invasive riparian leaf litter. This study examined decomposition rates of one native and two alien leaf litter species in response to one native and two invasive alien decapod crustaceans. Invasive alien signal crayfish and mitten crabs broke down all types of leaf litter, including invasive alien Rhododendron at a higher rate than did the indigenous white clawed crayfish.Secondary products were more varied, with more fine particulate organic matter generated for less palatable alien leaf litter species.Impacts of riparian invasions on detritus accumulation in freshwaters are thus potentially buffered by invasive alien decapods
Leeds Robotic Commands.
No full textLeeds Robotic Commands is a dataset of real-world RGB-D scenes of a robot manipulating different objects together with natural language descriptions of these actions. The scenes were recorded using a Microsoft Kinect2 sensor, and the descriptions were annotated by non-expert volunteers. The dataset includes 204 videos consisting of 17,373 frames in total. The dataset contains a total of 1024 commands, average of five-per video. A total of 51 different objects are manipulated in the videos such as basic block shapes, fruits, cutlery, and office supplies
Low concentration SDS decellularised porcine dermis
No full textData on the biological and biomechanical properties of porcine dermis before and after decellularisation and decellularised human dermis: biomechanical testing data (stress strain curves); DNA and hydroxyproline content; histology images, immunohistochemical staining for alpha Gal epitope, collagen IV and laminin image
Perchlorate neutron data
No full textAlthough there is no general consensus on the nature of water on Mars the discovery by the Phoenix Lander of calcium and magnesium perchlorates in Martian soil samples has fueled much speculation that flows of perchlorate brines might be the cause of the observed channeling and weathering in the surface. Magnesium perchlorate forms a eutectic mixture with water with a minimum freezing point around 206 K and this matches the observed ground temperatures, which, in summer at the equator, typically range between 195K and 280K. Here we study the structure of water in a mimetic of Martian water, namely magnesium perchlorate aqueous solution at its eutectic composition, using neutron diffraction in combination with hydrogen isotope labelling and empirical potential structure refinement. We find that the tetrahedral structure of water is heavily perturbed under these conditions, the effect being equivalent to pressurizing pure water to pressures of order 2 GPa or more. In addition, the Mg2+ and ClO4- ions appear charge-ordered, confining the water on length scales of order 9 Å, so preventing ice formation at low temperature. These effects may explain the low evaporation rates and high deliquescence of these salt solutions which are essential for stability within the low relative humidity environment of the Martian atmosphere
Nano-Fluidic Millimeter-Wave Lab-on-a-Waveguide Sensor for Liquid-Mixture Characterization
No full textThis paper reports on a miniaturized lab-on-a-waveguide liquid-mixture sensor, achieving highly-accurate nanoliter liquid sample characterization, for biomedical applications. The nanofluidic-integrated millimeter-wave sensor design is based on near-field transmission-line technique implemented by a single loop slot antenna operating at 91 GHz, fabricated into the lid of a photolaser-based subtractive manufactured WR-10 rectangular waveguide. The nanofluidic subsystem, which is mounted on top of the antenna aperture, is fabricated by using multiple Polytetrafluoroethylene (PTFE) layers to encapsulate and isolate the liquid sample during the experiment, hence, offering various preferable features e.g. noninvasive and contactless measurements. Moreover, the sensor is reusable by replacing only the nanofluidic subsystem, resulting a cost-effective sensor. The novel sensor can measure a liquid volume of as low as 210 nanoliters, while still achieving a discrimination accuracy of better than 2% of ethanol in the ethanol/deionized-water liquid mixture with a standard deviation of lower than 0.008 from at least three repeated measurements, resulting in the highest accurate ethanol and DI-water discriminator reported to date. The nanofluidic-integrated millimeter-wave sensor also offers other advantages such as ease of design, low fabrication and material cost, and no life-cycle limitation of the millimeter-wave subsystem
Dataset supporting the publication ‘A Comprehensive Combined Experimental and Computational Framework for Pre-clinical Wear Simulation of Total Knee Replacements’
Get PDFA more robust pre-clinical wear simulation framework is required in order to simulate wider and higher ranges of activities, observed in different patient populations such as younger more active patients. Such a framework will help to understand and address the reported higher failure rates for younger and more active patients (National_Joint_Registry, 2016). The current study has developed and validated a comprehensive combined experimental and computational framework for pre-clinical wear simulation of total knee replacements (TKR).
The input mechanical (elastic modulus and Poisson’s ratio) and wear parameters and of the moderately cross-linked ultra-high molecular weight polyethylene (UHMWPE) bearing material were independently measured from experimental studies under realistic test conditions, similar to the loading conditions found in the total knee replacements.. The wear predictions from the computational wear simulation were validated against the direct experimental wear measurements for size 3 Sigma curved total knee replacements (DePuy, UK) in an independent experimental wear simulation study under three different daily activities; walking, deep squat, and stairs ascending kinematic conditions.
The measured compressive mechanical properties of the moderately cross-linked UHMWPE material were more than 20% lower than that reported in the literature under tensile test conditions. The pin-on-plate wear coefficient of moderately cross-linked UHMWPE was significantly dependant of the contact stress and the degree of cross-shear at the articulating surfaces.
The computational wear predictions for the TKR from the current framework were consistent and in a good agreement with the independent full TKR experimental wear simulation measurements, with 0.94 coefficient of determination of the framework. In addition, the comprehensive combined experimental and computational framework was able to explain the complex experimental wear trends from the three different daily activities investigated. Therefore, such a framework can be adopted as a pre-clinical simulation approach to optimise different designs, materials, as well as patient’s specific total knee replacements for a range of activities
Information Associated with ‘Intelligent Support for Exploration of Data Graphs’ (PhD thesis)
No full textExamples of interface codes and materials from experimental user studies used in the PhD thesis. An example of how to connect to a triple store and extract the class hierarchy is described. Examples that describe how to extract the closest knowledge anchor and how to use the closest knowledge anchor in generating the narrative scripts of an exploration path are also included. The set of knowledge anchors and human basic level objects identified in MusicPinta and L4All datasets are included. Examples of the generated exploration paths in MusicPinta are included