1056 research outputs found
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Dataset for "Chiroptical Second-Harmonic Tyndall from Silicon Nanohelices"
No full textThis dataset contains the experimental and simulation data for the titled manuscript. Experimental data included data for the power dependences, emission spectra, measured linear CD and calculated nonlinear g-factors and nonlinear CD from extinction.Experimental data was recorded directly from the SR500 photon counter to a .txt file using LabView 2016 with a counting time of 5s. Data was imported into OriginPro2021 and organised. Medians were taken of the data and the resulting averages arranged to their corresponding scattering types (right angle, forward, RCP, LCP light)
A mean of all data corresponding to a reference data for a given power was taken, and plotted as a function of measured power to give a curve. The averages for the second harmonic intensity is fitted against this curve to give an accurate average power
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Simulated data collected using Lumerical FDTD solver. For linear simulations, we extracted scattering and absorption cross sections from 6 power monitors surrounding the source and nanoparticle respectively.
For the absorption 3D distribution, linear simulations provided absorption density in the nanoparticle which was then plotted in Matlab.
For multipole solver, electromagnetic fields were extracted from 6 field profile monitors around the nanoparticle and from the refractive index profile monitor. These fields were then imported into MENP solver in MatLab (see link at end).
Nonlinear simulations used chi 2 medium for the nanohelix and continuous wave normalisation was turned off. A high intensity fundamental field excited the nanohelix and near fields at second harmonic wavelength were measured by field profile monitors.Raw data files can be accessed using notepad or other program that can open .txt files. Files containing the graphs and processed data require OriginPro.
Software for simulations: Lumerical 2022, MatLab 2022bExperimental data:
Data files for a given measurement are placed in a named folder describing the measurement. (eg Si-pos power 750 nm refers to power dependence measurements for the Si (+) helices performed at an incident wavelength of 750 nm)
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Simulation: Files for each simulation are placed in folders describing the type of simulation (eg multipole, SHS). Individual files are named with the wavelength, nanohelix orientation and circular polarisation used
Dataset for “Ketogenic diet but not free-sugar restriction alters glucose tolerance, lipid metabolism, peripheral tissue phenotype, and gut microbiome: RCT”
Full text linkThe dataset includes demographic data of participants (n=60) randomised to one of three groups:
1. CONTROL (moderate sugar) - reflecting the composition of a typical European diet;
2. Low sugar - the same composition of a typical European diet but with <5% energy intake from sugar;
3. Low carbohydrate - low carbohydrate diet with <5% energy intake from sugar, replacing carbohydrate energy with fat.
All laboratory trials took place at the University of Bath. Participants consumed these diets for period of 12 weeks, with laboratory visits at baseline, at week 4, and at week 12.
The types of data that were collected during the trials are as follows:
- Height;
- Body mass;
- Body composition (by Dual-energy x-ray absorptiometry);
- Resting metabolic rate;
- Postprandial substrate oxidation;
- Exercise metabolism;
- Physical activity energy expenditure;
- Fasting and postprandial concentrations of circulating metabolites (e.g., glucose, lactate triacylglycerol) and hormones (e.g. insulin, C-peptide);
- Nuclear magnetic resonance spectroscopy measures of plasma (e.g., lipoprotein size and particle number);
- Skeletal muscle protein levels;
- Adipose tissue mRNA levels;
- Fasting haematology (e.g., white blood cell count, haematocrit, haemoglobin concentration);
- Urinary acetoacetate concentrations;
- Self-reported energy intake;
- Visual analogue scales for appetite and mood;
- Continuous glucose monitoring
Data set for "Effect of high-intensity interval training on cardiometabolic component risks in persons with paraplegia: Results of a randomized controlled trial"
No full textThis dataset provides the data collected for a trial investigating the effect of upper-body high-intensity interval training (HIIT) on cardiometabolic component risk factors in individuals with chronic spinal cord injury. The trial was a randomized controlled trial, with individuals assisted to either a 6-week HIIT intervention or control (CON) group. Measurements were taken at baseline and follow-up.The methodology can be found in the associated paper
Dataset for "DiGeTac Unit for Multimodal Communication in Human-Robot Interaction"
No full textThe dataset is divided into 2 main folders containing hand gesture and touch data. Gesture_Data folder contains data collected by performing four hand gestures; up, down, left, and right. There's also error data on mistakes made during these gestures. Touch_Data folder contains IMU data collected from the tactile sensor applying force on four different contact locations and from the idle case where no contact was made with the tactile sensor. The aim of this data collection is to present that the proposed sensing module can establish reliable multimodal communication channels between humans and industrial robots, thereby enhancing the interaction efficiency and user experience in automated environments.The methodology can be found in the associated paper
Dataset for "Assessing the performance of citizen science in a food hypersensitivity research pilot"
No full textThis dataset contains information about the extent and depth of engagement of food hypersensitive citizen scientists who registered for a co-designed citizen science pilot project. The dataset includes a data sheet for participants who registered to the project along with a datasheet of participants who went on to engage with the project. These include the citizen scientists' profile such as the regularity of their hypersensitive reaction occurring after encountering the index allergen(s), and how severe the participant reaction; and, their age, gender, ethnicity (reduced to White British or Irish, and other), working status, and how the participant heard about the project.See the research publication "Assessing the performance of citizen science in a food hypersensitivity research pilot" for the information on data collection methods
Datasets and R code for paper entitled "Quantifying the Value of Carbon Label Information in Food Choice using Drift Diffusion Modelling"
No full textLink to the dataset on OSF contains both full and clean (final) data for the (i) individual (trial) level of choice experiment results, (ii) group (collective) level of individual characteristics, and (iii) maaDDM computational modelling outputs.
The OSF folder also contains all R codes used in this study, including the building and running of maaDDM models and regressions used, as well as the materials used to build the choice experiment.The study employed a questionnaire survey to gather data on individual characteristics.
The study also employed an eye-tracking method, where participants visited the lab to complete a food choice experiment under eye-tracking.MS Excel and MS Word required
Dataset for, "Freezing from the heat: Building overcooling in Qatar"
No full textData comprise ISO 7730 compliant sensors and occupant survey information on thermal comfort and overcooling. We use the overcooling definition developed in "The comfort and energy impact of overcooled buildings in warm climates".2,472 responses from eight morphologically diverse office buildings (marked as A1 -- A3, B1 -- B5) in Doha Qatar are available.
Four environmental parameters were collected for each building occupant using calibrated thermal environment measurement sensors that conform to ISO 7730. The air temperature (Ta) and the relative humidity (RH) were taken using the Swema HC2A-S air humidity probe, the mean radiant temperature (Tmrt) was taken using the Swema 05 767370 globe temperature sensor, and the air velocity (Av) was taken using the Swema 03 767360 anemometer. Spot readings of the environmental parameters were taken at the desk of each building occupants’ workplace. This was conducted for every participating building occupant in the entire study to connect occupant responses to their immediate thermal conditions.
Using the standardized questions for thermal comfort found in ISO 7730, an anonymous questionnaire in both English and Arabic was used for the data collection. An explanation for the data collection procedures was given to all participating building occupants.
The questionnaires were used for the collection of occupant-specific subjective thermal comfort metrics. The TSV and TPV on a continuous seven-point thermal scale were recorded directly from the building occupants. The TSV scale includes -3 cold, -2 cool, -1 slightly cool, 0 neutral, +1 slightly warm, +2 warm, and +3 hot which would indicate the thermal sensation the occupant experience in the spaces they occupy. The TPV scale includes -3 much warmer, -2 warmer, -1 slightly warmer cool, 0 no change, +1 slightly cooler, +2 cooler, and +3 much cooler which indicate the users’ preference of the thermal environment they occupy. Questions indicating if the occupants are “thermally comfortable” and if they feel “too cold” under the current indoor thermal condition were employed. Additionally, a question comparing the current office temperature to the typical home temperature for the occupants on a continuous seven-point thermal scale (warmer to cooler) was collected.
The clothing insulation values (CLO) were evaluated from selections made by the occupant using a visual clothing aid depicting the ASHRAE index for non-western clothing ensembles.
The cold discomfort percentage (CD) and hot discomfort percentage (HD) is calculated by combining aligned votes (e.g., TSV cold discomfort and TPV cold discomfort) for the range of indoor temperatures observed during the field visit. Hot discomfort is considered with a TSV of (+1, +3] and a “cooler” TPV and cold discomfort being considered with a TSV of [-3, -1) and “warmer” TPV. Both CD and HD are normalized against all temperatures and compared to illustrate the discomfort type and intensity observed throughout varying thermal conditions during the study as demonstrated in earlier research [37,38,43]. The results to all questions are examined alongside the recorded indoor temperatures to examine the buildings occupants’ attitudes and voting patterns towards thermal comfort in office buildings in Qatar
Dataset for "Identification of Soft Modes Across the Commensurate-to-Incommensurate Charge Density Wave Transition in 1T-TaSe2"
No full textThe dataset contains the inputs necessary to reproduce the theoretical calculations presented in the associated paper, the abstract of which is as follows:
1T-TaSe2 is a prototypical charge density wave (CDW) material for which electron-phonon coupling and associated lattice reconstruction play an important role in driving and stabilising the CDW phase. Here, we investigate the lattice dynamics of bulk 1T-TaSe2 using angle-resolved ultralow wavenumber Raman spectroscopy down to 10 cm−1. Our high-resolution Raman spectra allow us to identify at least 27 peaks in the commensurate (CCDW) phase in the region 50 - 300 cm−1. Contrary to other layered materials, we do not find evidence of interlayer breathing or shear modes, suggestive of AA stacking in the bulk. Polarisation dependence of the mode intensities allows the assignment of their symmetry, which is supported by calculations of the phonon frequencies for the bulk structure using density functional theory. A detailed temperature dependence in the range T = 80 - 500 K allows us to clearly identify the soft modes associated with the CDW superlattice. Above the commensurate (CCDW) to incommensurate (ICCDW) phase transition at 473 K, we observe a dramatic loss of resolution of all modes, and significant linewidth broadening associated with a reduced phonon lifetime as the charge-order becomes incommensurate with the lattice.The input files are intended for use with VASP density functional theory code (https://www.vasp.at/wiki/index.php/The_VASP_Manual) with pseudopotentials included within VASP.
References for VASP are as follow: [1] G. Kresse and J. Hafner, Phys. Rev. B 47 , 558 (1993); ibid. 49 , 14 251 (1994). [2] G. Kresse and J. Furthmüller, Comput. Mat. Sci. 6 , 15 (1996). [3] G. Kresse and J. Furthmüller, Phys. Rev. B 54 , 11 169 (1996). [4] G. Kresse and J. Hafner, J. Phys.: Condens. Matt. 6, 8245 (1994). [5] G. Kresse and D. Joubert, Phys. Rev. 59 , 1758 (1999).
The Phonopy code was used to generate atomic displacements corresponding to the phonon eigenmodes. Phonopy is available here: https://phonopy.github.io/phonopy/qe.html and references to it are: Atsushi Togo, Laurent Chaput, Terumasa Tadano, and Isao Tanaka, J. Phys. Condens. Matter 35, 353001-1-22 (2023) “First-principles Phonon Calculations with Phonopy and Phono3py”, Atsushi Togo, J. Phys. Soc. Jpn., 92, 012001-1-21 (2023)The VASP subfolder contains the inputs needed to generate the electronic band structure of TaSe2 and the phonons at the Gamma point. The Phonopy code was used in interactive mode to generate force constants and phonon eignemodes
Dataset for Low-loss, compact, fibre-integrated cell for quantum memories
No full textThis dataset includes data that are used to characterise a low-loss, fibre integrated cell. That is a segment of hollow core fibre connected to single mode fibre on both ends by means of a low-loss, graded index fibre interconnection. We have included data that shows loss spectra for this device, as well as characterising the loss due to coupling into higher order modes of the fibre by means of allowing the fibre to droop under its own weight, and a spatially and spectrally resolved ("S-squared") measurement of the hollow core fibre mode. Finally, we provide data that show it is possible to optimise transmission using this drooping of the fibre.The dataset consists of transmission measurements of fibres, and low-loss hollow core fibre interconnect devices, as well as spatially and spectrally resolved imaging of the light exiting the fibre. These are used to create loss spectra, and to analyse the multimode behaviour of light propagating through the hollow core fibre. We use the standard cutback measurement technique to attain losses and attenuations of our fibres and devices. We also monitor transmission while drooping the fibre, in order to observe the effect on the phase of the light at the second HCF-SMF interconnect.The broadband light source used was an Ando AQ-4303B White Light Source, a Yokogawa AQ6374 Optical Spectrum Analyser was used to measure the transmission.The data are organised according to the figures that appear in the corresponding publication. Each figure has an associated README text file which explains the details of the files for that particular figure
Bibliographic Dataset for the Systematic Literature Review on Industry 5.0 Concepts and Enabling Technologies, Towards an Enhanced Conservation Practice
No full textThis database contains all the bibliographic information found after applying the Search Strategy used for the Industry 5.0 Concepts and Enabling Technologies, Towards an Enhanced Conservation Practice: Systematic Literature Review. The following electronic databases were searched:
- Scopus.
A total of 907 records were found. The search was conducted on 16/02/2024.
The information is presented in .ris, .bib, and .csv format
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