We have previously demonstrated that terahertz pulsed imaging is able to distinguish between rat tissues from different healthy organs. In this paper we report our measurements of healthy and cirrhotic liver tissues using terahertz reflection spectroscopy. The water content of the fresh tissue samples was also measured in order to investigate the correlations between the terahertz properties, water content, structural changes and cirrhosis. Finally, the samples were fixed in formalin to determine whether water was the sole source of image contrast in this study. We found that the cirrhotic tissue had a higher water content and absorption coefficient than the normal tissue and that even after formalin fixing there were significant differences between the normal and cirrhotic tissues' terahertz properties. Our results show that terahertz pulsed imaging can distinguish between healthy and diseased tissue due to differences in absorption originating from both water content and tissue structure.
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http://dx.doi.org/10.1088/0031-9155/55/24/013 | DOI Listing |
Biomacromolecules
January 2025
Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia.
2,2,6,6-Tetramethylpiperidine--oxyl (TEMPO) structures possess potent antioxidant activities for biomedical applications. TEMPO immobilization on hydrophilic polymers is a powerful strategy to improve its properties; however, it is mostly limited to reversible-deactivation radical polymerizations or postpolymerization approaches. Here, we immobilized TEMPO units on a hydrophilic poly(2-ethyl-2-oxazoline) (PEtOx) backbone through cationic ring-opening polymerization (CROP) of a new 2-oxazoline monomer bearing a methoxy-protected TEMPO 2-substituent with 2-ethyl-2-oxazoline (EtOx).
View Article and Find Full Text PDFJ Fluoresc
January 2025
Materials Science Lab (1), Physics Department, Faculty of Science, Cairo University, Giza, Egypt.
This study reports the synthesis, characterization, and optical properties of ZnO, ZnCeO, and ZnNdO nanoparticles and their interactions with lead acetate solutions. X-ray diffraction (XRD) confirmed that the nanoparticles were synthesized in a single-phase hexagonal structure, with crystallite sizes of 12.48 nm, 50.
View Article and Find Full Text PDFEnviron Monit Assess
January 2025
Syngenta Ltd, Jealott's Hill International Research Centre, Warfield, Bracknell, RG42 6EY, UK.
Brazilian soils have distinctive characteristics to European and North American soils which are typically used to investigate pesticide fate. This study aimed to compare soil-water partition coefficient (K), reversibility of adsorption and degradation half-life (DT) of 5 pesticides covering a wide range of physico-chemical properties in contrasting Brazilian soils (Argissolo, Gleissolo, Latossolo and Neossolo) and a temperate (UK) alfisol soil, and to study their relationship with soil OM, clay and expandable clay content, CEC and pH. In addition, we used a novel laboratory test to evaluate sorption reversibility, the 3-Phase Assay (3PA).
View Article and Find Full Text PDFWater Sci Technol
January 2025
The Institute of Applied Research, The Galilee Society, Shefa-Amr 2020000, Israel; Agrobics Ltd, Shefa-Amr 2020000, Israel; Prof. Ephraim Katzir Department of Biotechnology Engineering, Braude College of Engineering, Karmiel 2161002, Israel.
The advanced anaerobic technology (AAT), developed based on an immobilized high-rate anaerobic reactor, was applied as a pretreatment of municipal wastewater (WW) at Karmiel's treatment plant in Israel. The demonstration-scale AAT (21 m) system was operated at a flow rate of 100 mday municipal WW mixed with olive mill wastewater (OMW) (0.5 mday) to simulate the scenario of illegal discharge of agro-industrial WW.
View Article and Find Full Text PDFWater Sci Technol
January 2025
Engineering & Energy, College of Science Health Engineering and Education, Murdoch University, 6150 Perth, Australia E-mail:
Biogas, consisting mainly of CO and CH, offers a sustainable source of energy. However, this gaseous stream has been undervalued in wastewater treatment plants owing to its high CO content. Biogas upgrading by capturing CO broadens its utilisation as a substitute for natural gas.
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