A quartz disc resonator operating in thickness shear mode was used for the in situ monitoring of the viscosity during zeolite crystal formation.
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http://dx.doi.org/10.1039/b816040f | DOI Listing |
Sensors (Basel)
December 2024
Institute of Fundamental Technological Research, Polish Academy of Sciences, ul. Pawińskiego 5B, 02-106 Warsaw, Poland.
In this paper, we demonstrate that torsional surface elastic waves can propagate along the curved surface of a metamaterial elastic rod (cylinder) embedded in a conventional elastic medium. The crucial parameter of the metamaterial rod is its elastic compliance s44(1)ω, which varies as a function of frequency ω analogously to the dielectric function εω in Drude's model of metals. As a consequence, the elastic compliance s44(1)ω can take negative values s44(1)ω<0 as a function of frequency ω.
View Article and Find Full Text PDFFood Res Int
January 2025
Department of Agricultural, Forest and Food Sciences (DiSAFA), Università degli Studi di Torino, Largo Paolo Braccini 2, 10095 Grugliasco TO, Italy. Electronic address:
In this study, tomato paste was fortified with iron compounds at 25, 50, and 75 ppm concentrations. The effect of adding these micronutrient iron concentrations on the paste's physical, mechanical, aromatic, and chemical properties was evaluated every 15 days over a 60-day, storage period. The results indicated a gradual decrease in pH, total soluble solids (TSS), and taste index, alongside an increase in total acidity (TA) for all treatments throughout the storage period.
View Article and Find Full Text PDFAnal Chem
January 2025
Forensic Research & Development Department, Institute of Environmental Science and Research, PO Box 50348, Porirua 5240, New Zealand.
Electrochemical aptamer-based biosensors (E-aptasensors) are emerging platforms for point-of-care (POC) detection of complex biofluids. Human saliva particularly offers a noninvasive matrix and unprecedented convenience for detecting illicit drugs, such as cocaine. However, the sensitivity of cocaine E-aptasensors is significantly compromised in saliva.
View Article and Find Full Text PDFChemistry
January 2025
Molecular Sensors and Therapeutics (MST) Research Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence (SNIoE), Delhi NCR, Greater Noida, Uttar Pradesh 201314, India.
Since death is an inevitable phenomenon, exploring cell deaths holds importance. During this process, the cellular microenvironment within cells such as pH, polarity, viscosity etc alter. One such microenvironment, viscosity elevates during different cell deaths.
View Article and Find Full Text PDFSmall Methods
January 2025
Division of Molecular and Medical Genetics, Center for Gene and Cell Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan.
Achieving safe and efficient gene therapy hinges upon the inspection of genomes enclosed within individual nano-carriers to mitigate potential health risks associated with empty or fragment-filled vectors. Here solid-state nanopore sensing is reported for identifications of intermediate adeno-associated virus (AAV) vectors in liquid. The method exploits the phenomenon of translocation slowdown induced by the viscosity of salt water-organic mixtures.
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