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    1401 research outputs found

    Dataset for "Magnesium Ions Direct the Solid-State Transformation of Amorphous Calcium Carbonate Thin Films to Aragonite, Magnesium-Calcite or Dolomite"

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    This dataset supports work showing that remarkable control can be achieved over the chemical composition and structure of crystalline calcium carbonate by using heat to drive a pseudomorphic transformation of ACC thin films. The crystal polymorph can be tuned from low magnesium-calcite to pure aragonite, high magnesium-calcite and ultimately dolomite according to the magnesium content of the ACC, and mosaics of large single crystals are generated at elevated temperatures rather than the spherulitic structures formed at room temperature. This methodology also enabled an in situ investigation of the ACC crystallization mechanism using Transmission Electron Microscopy. Finally, our approach can be combined with templating methods to generate arrays of large aragonite single crystals with pre-selected morphologies. These results demonstrate that exceptional control can be achieved through the solid-state transformation of Mg-ACC, which has relevance to both synthetic and biological systems

    Data to support study of Spin-Crossover in a New Iron(II)/Di(pyrazolyl)pyridine Complex with a Terpyridine Embrace Lattice

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    [FeL2]X2 ( L = 2,6-di{4-fluoropyrazol-1-yl}pyridine) exhibit hysteretic spin-transitions at T½ = 164 (X = BF4) and 148 K (X = ClO4). The perchlorate salt shows efficient TIESST below 120 K, and was characterized in its thermally trapped high-spin form, as well as in its thermodynamic high- and low-spin states

    Data to Support a Study of Exploring the Influence of Counterions on a Hysteretic Spin-Transition in Isomorphous Iron(II) Complex Salts

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    The hysteretic spin transition shown by [FeL2][BF4]2 is quenched in its isomorphous perchlorate salt, which reflects more sluggish lattice dynamics in the presence of the larger ClO4 ion

    MiGut: a scalable in vitro platform for simulating the human gut microbiome – collated bacterial data

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    MiGut is a novel scalable platform whereby multtiple triple-stage in vitro models which simulate the human colon can be run in parallel with minimal additional resource requirement. This dataset contains the data used during a validation study whereby MiGut was run alongside a clinically relevant triple-stage gut model. The data include bacterial quantification of selected groups, as detailed in prior work, and the resulting Bray Curtis dissimilarity matrices, which were used in the associated publication

    Data set for Probing RNA conformations using a polymer electrolyte solid-state nanopore

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    The data set contains all ionic current traces recorded using pClamp system for the associated paper The data is in the native pClamp format of abf files. The data set is aim to allow users to re-analysis the data and to reproduce the observations made in the assocaited publication

    The Influence of Nanobubble Size and Stability on In Vitro Ultrasound Mediated Sonoporation - data

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    Lipid-shelled nanobubbles (NBs) are emerging as potential dual diagnostic and therapeutic agents. Similar to their micron-scale counterparts, microbubbles (1 – 10 μm), they can act as ultrasound contrast agents, as well as locally enhance therapeutic uptake. Recently, it has been shown that the reduced size of NBs (< 1 μm) promotes increased uptake and accumulation in tumour interstitial space, which can enhance their diagnostic and therapeutic performance. However, accurate characterisation of NB size and concentration is challenging, and may limit their translation into clinical use. Their sub-micron nature limits accuracy of conventional microscopy techniques, whilst common light scattering techniques fail to distinguish between sub-populations present in NB samples (i.e. bubbles and liposomes). Due to the difficulty in the characterization of NBs, relatively little is known about the influence of size on their therapeutic performance. In this study, we describe a novel method of using a commercially available Nanoparticle Tracking Analysis (NTA) system, to distinguish between NBs and liposomes, based on their differing optical properties. We used this technique to characterize 3 NB populations of varying size, isolated via centrifugation, and subsequently used this to assess their potential for enhancing localized delivery. Confocal fluorescence microscopy and image analysis were used to quantify the ultrasound enhanced uptake of fluorescent Dextran into live colorectal cancer cells. Our results showed that the amount of localized uptake did not follow the expected trends, in which larger NB populations out-perform smaller NBs, at matched concentration. To understand this observed behavior, the stability of each NB population was assessed. It was found that dilution of the NB samples from their stock concentration influences their stability, and it is hypothesized that both the total free lipid and inter-bubble distance play a role in NB lifetime, in agreement with previously proposed theories and models

    Protein corona alters the mechanisms of interaction between silica nanoparticles and lipid vesicles - data

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    Raw data for figures in the associated paper "Protein corona alters the mechanisms of interaction between silica nanoparticles and lipid vesicles

    Data for the paper "How D-type Hii region expansion depends on numerical resolution"

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    This dataset contains theoretical data described in the journal paper http://doi.org/10.1093/mnras/stab3707. The data is organized into 2 zip files: data.zip - this contains 8 directories containing data from the simulations presented in the paper. Each directory contains a set of ASCII data files containing details on the fluid variables, as well as 2 ASCII data files which log the evolution of particular properties of the HII region. It also contains a gnuplot script for generating the figures. figures.zip - this contains the pdf files of all of the figures in the paper

    Facebook content policies and international freedom of expression

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    Collection of international treaties, covenants, guidelines, and reports on freedom of expression 1947-2020, and of Facebook's content policies on freedom of expression 2005-202

    Data associated with " Global and local bioclimatic predilections for rebalancing the heating and cooling of buildings"

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    Air-conditioning relies on electricity that isn’t ubiquitous while policies encourage passive alternatives —yet cooling really should respond to occupants’ distress. Here I show where passive measures have been sufficient for comfort and identify local predilections for rebalancing demand between heating and cooling —apportioned by population neighboring meteorological stations. Access to air-conditioned shelter has been occasionally indispensable for 21% of population —generally between 20°S and 39°N and below 500m elevation. Meanwhile reverse-cycle air-source heat-pump/air-conditioning has been a reasonable expectation for 72% of the population. Refocusing on 9493 locations with ≥14 years of daily observations, stationary heating and cooling demands were found where 19% of population dwelt. Otherwise, summer cooling demand generally increased while winter heating demand decreased —except some mid-latitude continental areas demonstrated a predilection for both heating and cooling demands to increase. Over 30% of population dwelt where heating demand increased, while almost 65% dwelt where cooling demand increased. To estimate which HVAC package is locally appropriate, refer to nearby comparable meteorological stations detailed in the file “RESULTSout_1987-2020.csv” (n=16,582 records) that can be downloaded at doi.org/10.5518/967– but beware of microclimatic variability in urban heat islands

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