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26 results for “FTIR spectroscopy”
Evaluation of solid state of rice flours produced by different milling processes using ATR-FTIR spectroscopy
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Data from: Monitoring of plant-environment interactions by high throughput FTIR spectroscopy of pollen
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Figure 1 from: Salamah N, Cantika CD, Nurani LH, Guntarti A (2024) Authentication of citrus peel oils from different species and commercial products using FTIR Spectroscopy combined with chemometrics. Pharmacia 71: 1-7. https://doi.org/10.3897/pharmacia.71.e118789
Figure 1 ATR-FTIR spectra of sweet orange (1–3), lime (4–6) and lemon (7–8).
Photizo: an open-source library for cross-sample analysis of FTIR spectroscopy data
<p>With continually improved instrumentation, Fourier transform infrared (FTIR) microspectroscopy can now be used to capture thousands of high-resolution spectra for chemical characterisation of a sample. The spatially resolved nature of this method lends itself well to histological characterisation of complex biological specimens. However, commercial software currently available can make joint analysis of multiple samples challenging and, for large datasets, computationally infeasible. In order to overcome these limitations, we have developed Photizo - an open-source Python library for spectral analysis which includes functions for pre-processing, visualisation and downstream analysis, including principal component analysis, clustering, macromolecular quantification and biochemical mapping. This library can be used for analysis of spectroscopy data without a spatial component, as well as spatially-resolved data, such as data obtained via infrared (IR) microspectroscopy in scanning mode and IR imaging by focal plane array (FPA) detector. The data set made available here was FTIR microspectroscopy spatially resolved data used for demonstrating cross-sample analysis using Photizo including example metadata. </p>
Datasets for paper "Global biochemical profiling of fast-growing Antarctic bacteria isolated from meltwater ponds by high-throughput FTIR spectroscopy"
<p><span>Fourier transform infrared (FTIR) spectroscopy is a biophysical techniq</span><span>u<span>e used for non-destructive biochemical profiling of biological samples. It can provide comprehensive information about the total cellular biochemical profile of microbial cells. In this study, FTIR spectroscopy was used to perform biochemical characterization of twenty-nine bacterial strains isolated from the Antarctic meltwater ponds. The bacteria were grown on two forms of brain heart infusion (BHI) medium: agar at six different temperatures </span>(4, 10, 18, 25, 30, and 37 °C) and on broth at 18 °C. Multivariate data analysis approaches such as principal component analysis (PCA) and correlation analysis were used to study the difference in biochemical profiles induced by the cultivation conditions.</span> <span>The observed results indicated a strong correlation between FTIR spectra and the phylogenetic relationships among the studied bacteria. The most accurate taxonomy-aligned clustering was achieved with bacteria cultivated on agar</span><span>. Cultivation on two forms of BHI medium provided biochemically different bacterial biomass. The impact of temperature on the total cellular biochemical profile of the studied bacteria was </span><span>species-specific</span><span>, however, similarly for all bacteria, lipid spectral region was the least affected while polysaccharide region was the most affected by different temperatures. <span>T</span>he biggest temperature-triggered changes of the cell chemistry were detected for bacteria with a wide temperature tolerance such <em><span>Pseudomonas lundensis </span></em><span>strains<em> </em>and<em> Acinetobacter lwoffii </em>BIM B-1558. </span></span></p>
FIGURE 2 in Fourier transform infrared spectroscopy (FTIR) characteristics of ancient amber artifacts of the Han Dynasty from Hunan, China
FIGURE 2. Amber beads of the Han Dynasty from Hunan. A, Profile views of ZK14248. B, ZK14251, front and profile views. C, ZK14253; D, ZK14250, shattered bead with analyzed fragments. E, Broken amber bead (54changchenM010). F, Amber bead, SYS20220716-4. G, Amber bead SYS20220716-5. A–E, In collection of the Hunan Museum, Han Dynasty (202 BCE–220 CE). F and G, Amber beads obtained from local antique market or former private collection, presumed to be artifacts of the Han Dynasty, analyzed as references. Scale bars = 10mm.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.