Nuclear Magnetic Resonance (NMR) is a universal and quantitative analytical technique. Being a unique structural tool, NMR also competes with metrological techniques for purity determination and reference material analysis. In pharmaceutical research, applications of quantitative NMR (qNMR) cover mostly the identification and quantification of drug and biological metabolites. Offering an unbiased view of the sample composition, and the possibility to simultaneously quantify multiple compounds, qNMR has become the method of choice for metabolomic studies and quality control of complex natural samples such as foods, plants or herbal remedies, and biofluids. In this regard, NMR-based metabolomic studies, dedicated to both the characterization of herbal remedies and clinical diagnosis, have increased considerably.
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http://dx.doi.org/10.1016/j.copbio.2013.08.004 | DOI Listing |
Acta Bioeng Biomech
September 2024
Laboratory of Techno-Climatic Research and Heavy Duty Machines, Faculty of Mechanical Engineering, Cracow University of Technology, Kraków, Poland.
: The aim of the study was to quantitatively evaluate the vibrations received on the wheelchair footrest and to determine whether wheelchair users are at risk of vibration-white foot. This assessment was made using the ISO 2631 standard. : The measurements were taken on the footrest of a universal wheelchair.
View Article and Find Full Text PDFIntracellular protein production in bacteria is limited by the need for lysis and costly purification. A promising alternative is to engineer the host organism for protein secretion. While the serovar Typhimurium ( .
View Article and Find Full Text PDFAnal Methods
January 2025
School of Food and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan, 4100114, China.
A non-derivatized high-performance liquid chromatographic (HPLC) method was developed for the simultaneous quantification of hydroxyl acids and their amination products in ammonolysis reaction mixtures. By optimizing the mobile phase composition and pH (0.04 M KHPO-5% methanol, pH = 2.
View Article and Find Full Text PDFBiophys Chem
January 2025
Department of Chemical and Biological Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India. Electronic address:
Quantitative characterization of protein conformational landscapes is a computationally challenging task due to their high dimensionality and inherent complexity. In this study, we systematically benchmark several widely used dimensionality reduction and clustering methods to analyze the conformational states of the Trp-Cage mini-protein, a model system with well-documented folding dynamics. Dimensionality reduction techniques, including Principal Component Analysis (PCA), Time-lagged Independent Component Analysis (TICA), and Variational Autoencoders (VAE), were employed to project the high-dimensional free energy landscape onto 2D spaces for visualization.
View Article and Find Full Text PDFInt J Environ Res Public Health
January 2025
Research Centre for Public Health, Equity and Human Flourishing (PHEHF), Torrens University Australia, Adelaide, SA 5000, Australia.
Background: Universal health coverage (UHC) is a global priority, with the goal of ensuring that everyone has access to high-quality healthcare without suffering financial hardship. In Africa, most governments have prioritized UHC over the last two decades. Despite this, the transition to UHC in Africa is seen to be sluggish, with certain countries facing inertia.
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