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The relationship between obesity and the conformational structure of hemoglobin (Hb) has not been extensively investigated. This study aims to elucidate the dielectric parameters that distinguish the Hb molecule under obese conditions and following treatment with goldenberry (GB) extract, compared to a control group. The dielectric parameters analyzed include the loss factor (D), relaxation time (τ), dielectric increment (Δε), relative permittivity (έ), dielectric loss (ε"), conductivity (σ), and Cole-Cole parameters (α), measured across a frequency range of 20 Hz to 3 MHz. Significant differences in dielectric parameters were observed between obese rats and those treated with GB extract. Obese rats exhibited higher dielectric values compared to the control group, while rats treated with low and high doses of GB extract showed marked changes in Hb conformational structure. This study highlights the potential of dielectric parameters as biophysical markers for detecting hemoglobin conformational changes. Furthermore, it suggests that dielectric behavior could serve as an early indicator for assessing the severity of obesity and its related complications.
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http://dx.doi.org/10.1016/j.heliyon.2024.e40189 | DOI Listing |
Small
September 2025
Smart Material Research Laboratory, Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, India.
Achieving superior energy storage performance in dielectric materials under low electric fields remains a challenge. Most recent advancements require high fields that limit device applicability. Developing dielectric capacitors with high recoverable energy density (W), efficiency (η), and energy-storage coefficient (W/E) at low/moderate fields is critical for safer, compact, and durable electronics.
View Article and Find Full Text PDFRSC Adv
September 2025
Laboratory of Spectroscopic Characterization and Optical Materials, Faculty of Sciences, University of Sfax B.P. 1171 3000 Sfax Tunisia
Lithium metavanadate (LiVO) is a material of growing interest due to its monoclinic 2/ structure, which supports efficient lithium-ion diffusion through one-dimensional channels. This study presents a detailed structural, electrical, and dielectric characterization of LiVO synthesized a solid-state reaction, employing X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), and impedance/dielectric spectroscopy across a temperature range of 473-673 K and frequency range of 10 Hz to 1 MHz. XRD and Rietveld refinement confirmed high crystallinity and single-phase purity with lattice parameters = 10.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
Key Laboratory for Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, PR China; National Engineering Research Center for Colloidal Materials, Shandong University, Jinan 250100, PR China. Electronic address:
Hypothesis: The surface free energy (γ) and solubility (δ) parameters are two important characteristic parameters describing physicochemical properties of substances, but knowledge about the characteristic parameters (γ and δ) of surfactants is still lacking. Possible relationships of the characteristic parameters of surfactants with their head group types and alkyl chain lengths as well as with the surface tension (σ) of their aqueous solutions are worth exploring.
Methods: Solid surfactants including 10 anionic and 14 cationic ones were chosen.
Small
September 2025
Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China.
Droplet electricity generators (DEGs) that generate electricity through the interplay between water and the dielectric materials have attracted growing research interest due to their remarkable output voltage. However, conventional DEG design faces a critical trade-off: regulating the properties of dielectric materials, such as thickness or permittivity, can enhance output voltage yet weaken transferred charge. Here, a fluorinated ethylene propylene (FEP)/multi-walled carbon nanotubes (MWCNTs)/polydimethylsiloxane (PDMS) composite-based droplet electricity generator (FMP-DEG) is presented to overcome the voltage-charge trade-off and thus achieve an enhanced energy conversion efficiency of 4.
View Article and Find Full Text PDFChem Sci
August 2025
Department of Applied Chemistry, National Yang Ming Chiao Tung University 1001 University Road Hsinchu 30010 Taiwan
The dielectric constant ( ) of non-fullerene acceptors is a key parameter in organic solar cells, significantly influencing exciton dissociation efficiency and charge recombination dynamics. Substituting bromine, characterized by moderate electronegativity and high polarizability, at the -benzodipyrrole core of acceptors effectively modulates their optical properties, molecular packing, and dielectric constants. The asymmetric monobrominated CBrB-Cl acceptor exhibits a more red-shifted absorption spectrum, enhanced crystallinity, and a higher of 3.
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