DataCat: The Research Data Catalogue (University of Liverpool)
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Low Thermal Conductivity in Bi8CsO8SeX7 (x = Cl, Br)
No full textUnderstanding the structure-property relationships of materials in order to supress thermal conductivity is crucial for developing efficient thermoelectric generators and thermal barrier coatings. Low thermal conductivity materials can often contain a single dominant phonon scattering mechanism. Here, we highlight how combining different structural features into one material can aid in the design and identification of new materials with low thermal conductivities. We synthesise two new mixed-anion materials, Bi8CsO8SeX7 (X = Cl and Br), with low thermal conductivities of 0.27(2) and 0.22(2) W m-1 K-1 respectively, measured along their c-axes at room temperature. The Bi8CsO8SeX7 materials possess a combination of bond strength hierarchies, Cs+ vacancies, and low frequency Cs+ rattling. These different features significantly inhibit phonon transport along different crystallographic directions. Due to sharp bond strength contrast between the van der Waals gaps and [Bi2O2]2+ layers, Bi8CsO8SeX7 materials exhibit thermal conductivities <50% of the theoretical minimum when measured along the stacking direction. Conversely, the thermal conductivity associated with the ab-plane is reduced by Cs+ rattling when compared to the structurally and compositionally related BiOCl
Shape-Dependent Reactivity of Ru/CeO2 Catalysts in the Chemical Recycling of Polypropylene to Liquid Hydrocarbons via Hydrogenolysis
No full textThe t ransformation of polyolefin waste to liquid hydrocarbons via hydrogenolysis offers a promising pathway for the chemical recycling of waste polymers. This work describes the importance of shaped CeO2 supports (nanorods and nanocubes) in governing metal-support interactions and facilitating the production of highly dispersed Ru species, for application in the hydrogenolysis of various pristine and post-consumer polypropylene (Mw = 11975-250,000 Da). The shaped 2 wt.% Ru/CeO2 exhibit high liquid alkane yields (58-81%) when compared to the non-shaped 2 wt.% Ru/CeO2 catalysts (liquid yield: 34-58%) under optimized mild reaction conditions (220 °C, 16 h, 30 bar H2). The formation of small Ru clusters and adatoms on the shaped CeO2 are key to control the regioselectivity by favoring greater hydrogen adsorption and facilitating the scission of internal C-C bonds to produce high liquid alkane yields with increased catalytic activity. This was further confirmed mechanistically using a computational density functional theory study on the hydrogenolysis of pentane (C5) to determine the favorable formation of methane over larger Ru particles (≥1.5 nm) that are present in the non-shaped Ru/CeO2 catalyst
Single-Molecule Conductance Dataset for a series of T-shaped Spiropyrans and their In-Situ switching to Merocyanines.
No full textAs in title - raw single-molecule conductance data for a series of compounds
Geographically Weighted Regression Analysis: Examining the Relationship between Index of Multiple Deprivation (IMD) 2019 and Prevalence of Hearing Loss in Adults (50 years old and above) in Cheshire and Merseyside ICS, 2020. An Interactive Map Application
Get PDFGeographically Weighted Regression Analysis: Exploring the Relationship between Median Age in LSOAs and Hearing Loss Prevalence in Adults (50+) in Cheshire and Merseyside ICS, 2020
For more detailed information on this type of spatial analysis, please visit https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-statistics/geographically-weighted-regression.ht
Synthesis, Structure & Properties of CuBiSeCl2: a New Chalcohalide Photovoltaic Material with Low Thermal Conductivity
No full textMixed anion halide-chalcogenide materials have recently attracted attention as possible solar absorbers owing to their superior environmental stability and desirable optoelectronic properties. In this work, we report the synthesis of a previously unreported mnew mixed-metal chalcohalide material, CuBiSeCl2 (Pnma) accessed through a simple, low temperature solid state route. The physical structure is characterized through Single Crystal X-Ray Diffraction and reveals significant Cu displacement within the CuSe2Cl4 octahedra. The electronic structure of CuBiSeCl2 is understood through computational prediction and experimental verification, which reveals a valence band dominated by Cu orbitals and highly anisotropic charge carrier effective masses. The band gap is measured to be 1.4(3) eV, a suitable value for solar absorbing applications. The electronic, thermal and vibrational properties, including resistivity, Seebeck coefficient, thermal conductivity and heat capacity, are also measured and it is found that CuBiSeCl2 exhibits a low thermal conductivity of 0.3 26 (3) W K-1 m-1
Speeches delivered in UK parliament on Brexit bill
Get PDFThis spreadsheet contains all of the speeches delivered in the British parliament during the various stage of the EU WIthdrawal Bill.
The first author created a corpus consisting of all the parliamentary speeches on the EU (Withdrawal) Act 2018. The long title of this piece of legislation is “A Bill to repeal the European Communities Act 1972 and make other provision in connection with the withdrawal of the United Kingdom from the EU.” Full details of this bill’s passage through parliament, including direct links to speeches in Hansard, can be found here.
https://bills.parliament.uk/bills/2045/stage
Raw data for Monitoring Interfacial Electric Fields at a Hematite Electrode During Water Oxidation
Get PDFzip file containing raw data shown in Raw data for Monitoring Interfacial Electric Fields at a Hematite Electrode During Water Oxidation. Data is organised by figures in the above named paper. Figure 5 is constructed from the data available in the supporting information as described in the tex
Metric-based analysis of FTIR data to discriminate tissue types in oral cancer
No full textA machine learning algorithm (MLA) has predicted the prognosis of oral potentially malignant lesions and discriminated between lymph node tissue and metastatic oral squamous cell carcinoma (OSCC). The MLA analyses metrics, which are ratios of Fourier transform infrared absorbances, and identifies key wavenumbers that can be associated with molecular biomarkers. The wider efficacy of the MLA is now shown in the more complex primary OSCC tumour setting, where it is able to identify seven types of tissue. Three epithelial and four non-epithelial tissue types were discriminated from each other with sensitivities between 82% and 96% and specificities between 90% and 99%. The wavenumbers involved in the five best discriminating metrics for each tissue type were tightly grouped, indicating that small changes in the spectral profiles of the different tissue types are important. The number of samples used in this study was small, but the information will provide a basis for further, larger investigations
Bivariate Analysis: Mapping Index of Multiple Deprivation (IMD) 2019 and Prevalence of Hearing Loss in Adults (50 years old and above) in Cheshire and Merseyside ICS, 2020. An Interactive Map Application
Get PDFBivariate Analysis: Mapping IMD 2019 and Prevalence of Hearing Loss in Adults (50+) in Cheshire and Merseyside ICS, 202
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