Innovative soil fluoride estimation method: dual polarimetric saline-associated fluoride for agricultural patches
In this study, soil fluoride was measured for the semi-arid regions in southern India, using Sentinel-1 data in conjunction with the dual polarimetric saline-associated fluoride model (also known as fluoride model). A loss angle was estimated from laboratory-based dielectric components of soil samples with strong electrical conductivity under high and low fluoride conditions. The conductivity loss angle and real and imaginary dielectric constants were used to study fluoride salt's dielectric behavior. The imaginary dielectric component sensitive to dielectric loss could predict fluoride across large areas over time. This w...
Source: Environmental Science and Pollution Research International - April 2, 2024 Category: Environmental Health Authors: Vijayasurya Krishnan Manimaran Asaithambi Source Type: research
Innovative soil fluoride estimation method: dual polarimetric saline-associated fluoride for agricultural patches
In this study, soil fluoride was measured for the semi-arid regions in southern India, using Sentinel-1 data in conjunction with the dual polarimetric saline-associated fluoride model (also known as fluoride model). A loss angle was estimated from laboratory-based dielectric components of soil samples with strong electrical conductivity under high and low fluoride conditions. The conductivity loss angle and real and imaginary dielectric constants were used to study fluoride salt's dielectric behavior. The imaginary dielectric component sensitive to dielectric loss could predict fluoride across large areas over time. This w...
Source: Environmental Science and Pollution Research International - April 2, 2024 Category: Environmental Health Authors: Vijayasurya Krishnan Manimaran Asaithambi Source Type: research
Application of Fenton chemistry in electrochemical determination of pyrophosphatase activity and fluoride
Talanta. 2024 Mar 31;274:125943. doi: 10.1016/j.talanta.2024.125943. Online ahead of print.ABSTRACTFenton chemistry has aroused widespread concern due to its application in the green oxidation and mineralization of organic wastes. Inorganic pyrophosphatase (PPase) catalyzes the hydrolysis of pyrophosphate ions (PPi) and provides a thermodynamic driving force for many biosynthetic reactions. Fluoride (F-) is widely applied to fight against tooth decay and reduce cavities. The electrochemical determination of PPase activity and F- was realized based on Fenton chemistry in this work. Glassy carbon electrode modified with poly...
Source: Talanta - April 2, 2024 Category: Chemistry Authors: Peng Luo Yiyan Xie Xianhuan He Yiyu He Xuan Wang Liang Tan Source Type: research
New iodate fluoride Rb2Ce(IO3)5F with nonlinear optical properties
Dalton Trans., 2024, Accepted Manuscript DOI: 10.1039/D4DT00431K, PaperOksana Grigoreva, Tatiana Shatalova, Alexey N. Kuznetsov, Peter S Berdonosov, Sergey Stefanovich, Konstantin Lyssenko, Valery Dolgikh New noncentrosymmetric cerium (IV) iodate fluoride Rb2Ce(IO3)5F was prepared employing hydrothermal technique. The compound crystallizes in Cmc21 space group (#36) with cell parameters a = 11.1518(6) Å, b = 8.1187(4)... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Dalton Trans. latest articles)
Source: RSC - Dalton Trans. latest articles - April 1, 2024 Category: Chemistry Authors: Oksana Grigoreva Source Type: research
Integration of adsorption, reduction, and filtration in PANI/PVDF nanofiber composite membrane for removal of Cr(VI)
Environ Sci Pollut Res Int. 2024 Apr 1. doi: 10.1007/s11356-024-33098-z. Online ahead of print.ABSTRACTHere, polyaniline/polyvinylidene fluoride (PANI/PVDF) nanofiber composite membrane was fabricated using electrostatic spinning technology to remove hexavalent chromium Cr(VI). The employment of PANI not only extremely enhanced the hydrophilic property of the nanofiber membrane, but also facilitated the transfer of Cr2O72- from water to the membrane. The PANI/PVDF membrane had an extremely excellent performance in getting rid of Cr(VI) and a quite large flux (250 L/m2 h). The maximum adsorption quantity of the membrane cou...
Source: Environmental Science and Pollution Research International - April 1, 2024 Category: Environmental Health Authors: Hongyu Liu Wei Ye Huan Zhang Huicai Wang Junfu Wei Source Type: research
Integration of adsorption, reduction, and filtration in PANI/PVDF nanofiber composite membrane for removal of Cr(VI)
Environ Sci Pollut Res Int. 2024 Apr 1. doi: 10.1007/s11356-024-33098-z. Online ahead of print.ABSTRACTHere, polyaniline/polyvinylidene fluoride (PANI/PVDF) nanofiber composite membrane was fabricated using electrostatic spinning technology to remove hexavalent chromium Cr(VI). The employment of PANI not only extremely enhanced the hydrophilic property of the nanofiber membrane, but also facilitated the transfer of Cr2O72- from water to the membrane. The PANI/PVDF membrane had an extremely excellent performance in getting rid of Cr(VI) and a quite large flux (250 L/m2 h). The maximum adsorption quantity of the membrane cou...
Source: Environmental Science and Pollution Research International - April 1, 2024 Category: Environmental Health Authors: Hongyu Liu Wei Ye Huan Zhang Huicai Wang Junfu Wei Source Type: research
Laser fluorescence assessment of dental caries arrest with two silver fluoride agents in patients with special needs – a preliminary report
ConclusionA single application of AgF/KI or AgF/SnF2 has high predictability (over 90%) for achieving arrest in active caries lesions in adult patients with SN and high caries risk. Clinical assessment should use visual-tactile examination combined with LF readings to detect lesions that are still progressing and that require additional treatments. Future studies should compare these AgF modalities with SDF and explore factors such as time between applications and the need for repeated applications.Trial registrationThe study was registered with the Australian Clinical Trials Registry (ACTRN12621001139864p) on 23/08/2021. ...
Source: Lasers in Medical Science - April 1, 2024 Category: Laser Surgery Source Type: research
Sensors, Vol. 24, Pages 2235: Cardiac Multi-Frequency Vibration Signal Sensor Module and Feature Extraction Method Based on Vibration Modeling
This study focuses on the rich-spectrum mechanical vibrations generated during cardiac activity. By combining Fourier series theory, we propose a multi-frequency vibration model for the heart, decomposing cardiac vibration into frequency bands and establishing a systematic interpretation for detecting multi-frequency cardiac vibrations. Based on this, we develop a small multi-frequency vibration sensor module based on flexible polyvinylidene fluoride (PVDF) films, which is capable of synchronously collecting ultra-low-frequency seismocardiography (ULF-SCG), seismocardiography (SCG), and phonocardiography (PCG) signals with...
Source: Sensors - March 30, 2024 Category: Biotechnology Authors: Zhixing Gao Yuqi Wang Kang Yu Zhiwei Dai Tingting Song Jun Zhang Chengjun Huang Haiying Zhang Hao Yang Tags: Article Source Type: research
New Type of Tin(IV) complex based Turn-on Fluorescent Chemosensor for Fluoride ion Recognition: Elucidating the Effect of Molecular Structure on Sensing Property
Dalton Trans., 2024, Accepted Manuscript DOI: 10.1039/D4DT00461B, PaperAndrew Wu, Patrick C. Hillesheim, Peter N Nelson, Matthias Zeller, Gia M Carignan, Jing Li, Daniel Wooseok Ki A novel type of chemosensor based on tin(IV) complexes incorporating hydroxyquinoline derivatives has been designed and investigated for selectively detecting fluoride ions. Sn(meq)2Cl2 (meq = 2-methyl-8-quinolinol) (complex 1) exhibits a... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Dalton Trans. latest articles)
Source: RSC - Dalton Trans. latest articles - March 29, 2024 Category: Chemistry Authors: Andrew Wu Source Type: research
Defluorination of HFCs by a Magnesium Reagent
This article is licensed under aCreative Commons Attribution 3.0 Unported Licence.Daniel James Sheldon, Joseph Parr, Mark Richard Crimmin Reaction of a series of HFCs with a main group reagent containing a Mg –Mg bond results in defluorination to form the corresponding magnesium fluoride complex. In the case of 1,1,1,2-tetrafluoroethane... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Dalton Trans. latest articles)
Source: RSC - Dalton Trans. latest articles - March 29, 2024 Category: Chemistry Authors: Daniel James Sheldon Source Type: research
Molecules, Vol. 29, Pages 1541: TDDFT Study on the ESIPT Properties of 2-(2 & prime;-Hydroxyphenyl)-Benzothiazole and Sensing Mechanism of a Derived Fluorescent Probe for Fluoride Ion
In this study, the detailed sensing mechanism of a novel high-efficiency probe (PBT) based on 2-(2′-hydroxyphenyl)-benzothiazole derivatives towards F− has been fully investigated based on density functional theory (DFT) and time-dependent density functional theory (TDDFT) methods. F− attacks the O-P bond of PBT to cleavage the dimethylphosphinothionyl group, and the potential products were evaluated by Gibbs free energy and spectroscopic analyses, which ultimately identified the product as HBT-Enol1 with an intramolecular hydrogen bond. Bond parameters, infrared vibrational spectr...
Source: Molecules - March 29, 2024 Category: Chemistry Authors: Tingting Wang Meiheng Lv Yuhang Zhang Yue Gao Zexu Cai Yifan Zhang Jiaqi Song Jianyong Liu Hang Yin Fangjian Shang Tags: Article Source Type: research
Molecules, Vol. 29, Pages 1551: Temperature Dependence of the Number of Defect-Structures in Poly(vinylidene fluoride)
rmann
Poly(vinylidene fluoride) (PVDF) is predominantly characterized by alternating CH2 and CF2 units in a polymer backbone, originating from the head-to-tail addition of monomers or regular propagation. Due, to a small extent, to inverse monomer addition, so-called defect structures occur which influence the macroscopic properties of PVDF significantly. The amount of defect structures in the material is determined by the polymerization conditions. Here, the temperature dependence of the fraction of defect structures in PVDF obtained from polymerizations between 45 and 90 °C is reported. We utilized 19F-NM...
Source: Molecules - March 29, 2024 Category: Chemistry Authors: Jan Schwaderer Marco Drache Sabine Beuermann Tags: Article Source Type: research
Efficient fluoride removal using nano MgO: mechanisms and performance evaluation
This study enhances our profound understanding of the defluorination effectiveness and mechanisms of nano MgO.PMID:38538999 | DOI:10.1007/s11356-024-33083-6 (Source: Environmental Science and Pollution Research International)
Source: Environmental Science and Pollution Research International - March 28, 2024 Category: Environmental Health Authors: BoWen Liu Li Ai Ming Lei Hongfei Lin Source Type: research
Efficient fluoride removal using nano MgO: mechanisms and performance evaluation
This study enhances our profound understanding of the defluorination effectiveness and mechanisms of nano MgO.PMID:38538999 | DOI:10.1007/s11356-024-33083-6 (Source: Environmental Science and Pollution Research International)
Source: Environmental Science and Pollution Research International - March 28, 2024 Category: Environmental Health Authors: BoWen Liu Li Ai Ming Lei Hongfei Lin Source Type: research
Efficient fluoride removal using nano MgO: mechanisms and performance evaluation
This study enhances our profound understanding of the defluorination effectiveness and mechanisms of nano MgO.PMID:38538999 | DOI:10.1007/s11356-024-33083-6 (Source: Environmental Science and Pollution Research International)
Source: Environmental Science and Pollution Research International - March 28, 2024 Category: Environmental Health Authors: BoWen Liu Li Ai Ming Lei Hongfei Lin Source Type: research
