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12 results for “Fe3O4”
Dataset for publication Sikora P., El-Khayatt A.M., Saudi H.A., Liard M., Lootens D., Chung S.-Y., Woliński P., Abd Elrahman M. Rheological, mechanical, microstructural and radiation shielding properties of cement pastes containing magnetite (Fe3O4) nanoparticles. International Journal of Concrete Structures and Materials (2023), 17, 7
<p>Open dataset for publication Sikora P., El-Khayatt A.M., Saudi H.A., Liard M., Lootens D., Chung S.-Y., Woliński P., Abd Elrahman M. Rheological, mechanical, microstructural and radiation shielding properties of cement pastes containing magnetite (Fe3O4) nanoparticles. International Journal of Concrete Structures and Materials (2023), 17, 7. https://doi.org/10.1186/s40069-022-00568-y</p> <p>File 1 - X-ray diffractogram and particle size distribution (laser granulometry) data - *.opju (Origin)<br> File 2 - Rheological test results - *.opju (Origin)<br> File 5 - Mechanical peformance (early strength - ultrasounds and compressive strength) and density test results - *.opju (Origin)<br> File 4 - Mercury intrusion porosimetry test data - *.opju (Origin)</p>
Rapid pathogen identification in aqueous humor samples by combining Fc-MBL@Fe3O4 enrichment and MALDI-TOF MS profiling
<p>Prompt clinical diagnosis and antimicrobial therapy are key to managing infective endophthalmitis. The small volume of aqueous humor, low bacterial counts, and empirical medication by physicians make existing diagnostic methods time-consuming and imprecise. Here, we investigated the feasibility of combining Fc-MBL@Fe3O4 enrichment with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) profiling to identify pathogens in aqueous humor. Aqueous humor aspirated from freshly enucleated porcine eyes was inoculated with different inocula of <em>Staphylococcus aureus</em> (<em>S. aureus</em>), <em>Staphylococcus </em><em>epidermidis</em> (<em>S. epidermidis</em>), and <em>Klebsiella pneumoniae</em> (<em>K. pneumoniae</em>). We performed identification directly in aqueous humor samples and after short-term culture of micro-LB broth. Aqueous humor endophthalmitis samples were enriched with Fc-MBL@Fe3O4 and analyzed with MALDI-TOF MS. The identification time and minimum bacterial concentration required for identification were determined. The enrichment efficiency of Fc-MBL@Fe3O4 for different bacteria was > (87.5±5.0)%. The objects of direct identification include live bacteria and bacteria treated with antibiotics, which can be completed within 1.5 hours. The minimum number of bacteria needed for positive identification was 2.20×10<sup>6 </sup>CFU. For micro-LB broth culture, the identification of bacteria can be completed within 6.5-9.5 h for aqueous humor samples with an initial bacterial count of tens to hundreds.</p>
Magnetic particles (Fe3O4) magnify ion transfer processes at the electrified liquid-liquid interface. Case study: Levamisole detection.
<p>Data set for the publication Magnetic particles (Fe3O4) magnify ion transfer processes at the electrified liquid-liquid interface. Case study: Levamisole detection. </p>
Stability of iridium single atoms on Fe3O4(001) in the mbar pressure range - Published and reference data
<p>Collection of data used in the publication in title, sorted for different conditions and pressures. Baselines included for pristine Fe3O4(001), in addition to Ir1-deposited surfaces.</p>
Physico-chemical characterization of sterile Fe3O4 nanoparticles by XPS / HAXPES / SEM
<p>Here a dataset of XPS, HAXPES and SEM measurements for the physico-chemical characterization of nanoparticles is presented. The measurements are part of the H2020 project “NanoSolveIT”.</p> <p>Sterile Fe<sub>3</sub>O<sub>4</sub> nanoparticles were synthesized under aseptic conditions at Mintek, South Africa (EMR-Identifier in the project: ERM00000583).</p> <p>Prior to the measurements, the samples were prepared from the solution as drop cast on Si wafers. First SEM measurements were performed, followed by XPS and HAXPES measurements on the same samples. Here at first survey spectra were recorded followed by high resolution spectra. For XPS / HAXPES several Si-wafers were mounted together on one platen. The platen was left in the intro chamber of the instrument for several hours before the measurement started.</p> <p>Equipment:</p> <p>SEM images were acquired with a <em>Supra 40 </em>(Zeiss) SEM.</p> <p>For X-ray spectroscopy experiments, a combined XPS / HAXPES spectrometer (<em>Quantes </em>from ULVAC-PHI) was used, where XPS is measured at 1486.6 eV (monochromatic Al Kα source) and HAXPES at 5414.9 eV (monochromatic Cr Kα source). Here it is possible to perform the measurements at the exact same position.</p> <p>Data:</p> <p>For SEM, the data are given in .tif format. For XPS / HAXPES the raw data are given as .spe (PHI format) and .npl (VAMAS format) files. The measurement conditions are given in the data files.</p> <p>Naming of data:</p> <p>SEM: <em>sample_treatment (n)</em>, with n a consecutive number.</p> <p>XPS / HAXPES: For the .spe and for the corresponding .npl files <em>Pn.m.o.sample_treatment, </em>with Pn: platen-number, m: spectrum number (order of the measurements); o: point-number, of the position on the sample, sample_treatment with "p" for pristine.</p> <p> </p> <p>The authors thank Thorid Lange, who performed the SEM measurements.</p>
Physico-chemical characterization of Fe3O4 nanoparticles by XPS / HAXPES / SEM
<p>Here a dataset of XPS, HAXPES and SEM measurements for the physico-chemical characterization of nanoparticles is presented. The measurements are part of the H2020 project “NanoSolveIT”.</p> <p>Fe<sub>3</sub>O<sub>4 </sub>nanoparticles were provided by Promethean Particles (EMR identifier in the project: ERM00000409).</p> <p>Prior to the measurements, the samples were prepared from the solution as drop cast on Si wafers. First SEM and EDS measurements were performed, followed by XPS and HAXPES measurements on the same samples. Here at first survey spectra were recorded followed by high resolution spectra. For XPS / HAXPES several Si-wafers were mounted together on one platen. The platen was left in the intro chamber of the instrument for several hours before the measurement started.</p> <p>Equipment:</p> <p>SEM images were acquired with a <em>Supra 40 </em>(Zeiss) SEM equipped with a <em>Quantax 400 </em>(Bruker) SDD EDS spectrometer.</p> <p>For X-ray spectroscopy experiments, a combined XPS / HAXPES spectrometer (<em>Quantes </em>from ULVAC-PHI) was used, where XPS is measured at 1486.6 eV (monochromatic Al Kα source) and HAXPES at 5414.9 eV (monochromatic Cr Kα source). Here it is possible to perform the measurements at the exact same position.</p> <p>Data:</p> <p>For SEM, the data are given in .tif format. For XPS / HAXPES the raw data are given as .spe (PHI format) and .npl (VAMAS format) files. The measurement conditions are given in the data files.</p> <p>Naming of data:</p> <p>SEM: <em>sample_treatment (n)</em>, with n a consecutive number.</p> <p>XPS / HAXPES: For the .spe and for the corresponding .npl files <em>Pn.m.o.sample_treatment, </em>with Pn: platen-number, m: spectrum number (order of the measurements); o: point-number, of the position on the sample, sample_treatment with "p" for pristine.</p> <p> </p> <p>The authors thank Sigrid Benemann, who performed the SEM measurements.</p>
Data for: Magnetic-field-assisted molecular beam epitaxy: Engineering of Fe3O4 ultrathin films on MgO(111)
<p>Molecular beam epitaxy is widely used for engineering low-dimensional materials. Here, we present a novel extension of the capabilities of this method by assisting epitaxial growth with the presence of an external magnetic field (MF). MF-assisted epitaxial growth was implemented under ultra-high vacuum conditions thanks to specialized sample holders for generating in-plane or out-of-plane MF and dedicated manipulator stations with heating and cooling options. The significant impact of MF on the magnetic properties was shown for ultra-thin epitaxial magnetite films grown on MgO(111). Using in situ and ex situ characterization methods, scanning tunneling microscopy, conversion electron Mössbauer spectroscopy, and the magneto-optic Kerr effect, we showed that the in-plane MF applied during the reactive deposition of 10 nm Fe3O4(111)/MgO(111) heterostructures influenced the growth morphology of the magnetite films, which affects both in-plane and out-of-plane characteristics of the magnetization process. The observed changes are explained in terms of modification of the effective magnetic anisotropy.</p>
Data for: Magnetic-field-assisted molecular beam epitaxy: Engineering of Fe3O4 ultrathin films on MgO(111)
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Exploring the atomic-scale dynamics of Fe3O4(001) at catalytically relevant temperatures using FastSTM
<p>This dataset contains STM images and FastSTM movies of a bare Fe3O4(001) surface at elevated temperatures. We include the raw data, converted movies and log-files, which contain the parameters that have been used for FastSTM movie processing with the software PyfastSPM [1].</p> <p> </p> <p>[1] Briegel, K.D., Riccius, F., Filser, J., Bourgund, A., Spitzenpfeil, R., Panighel, M., Dri, C., Lechner, B.A.J., Esch, F., SoftwareX, 2023, 21, 101269.</p> <p> </p> <p> </p>
Data from: Fe3O4 nanoparticle coated mushroom source biomaterail for Cr(VI) polluted liquid treatment and mechanism research
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Data from: Enhanced in vitro biocompatibility and osteogenesis of titanium immobilized with dopamine-assisted superparamagnetic Fe3O4 nanoparticles for hBMSCs
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Biocompatibility and Discovery of the Potential Applications of Magnetite (Fe3O4) Nanoparticles
GEO Series GSE15248. Homo sapiens. 6 samples. Type: Expression profiling by array.
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