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Effects of molecular weight fraction on antioxidation capacity of rice protein hydrolysates

Scientific Reports 2023年第1期13卷 1-11页

作者： Chen, Hui-Ju dai, Fan-Jhen Chen, Cheng-You Fan, Siao-Ling Zheng, Ji-Hong Chau, Chi-Fai Lin, Yung-Sheng Chen, Chin-Shuh Department of Food Science and Biotechnology National Chung Hsing University Taichung 402204 Taiwan Healthmate Co. Ltd Changhua 500016 Taiwan Ph.D. Program in Materials and Chemical Engineering National United University Miaoli 360302 Taiwan Department of Chemical Engineering National United University Miaoli 360302 Taiwan Institute of Food Safety and Health Risk Assessment National Yang Ming Chiao Tung University Taipei 112304 Taiwan

Rice protein was used as a starting material to provide rice protein hydrolysates (Rph) through enzyme-assisted extraction. Rph was further fractionated using ultrafiltration membrane (UF) and classified by molecular weight (MW;MW < 1 kda, MW 1–10 kda, and MW > 10 kda). Peptides with MW < 1 kda possessed superior antioxidant properties (p < 0.05). Therefore, UF demonstrated great efficacy in selectively separating antioxidant peptides. A Pearson correlation analysis revealed that the total phenolic concentration was correlated with oxygen radical absorbance capacity (ORAC;r = 0.999, p < 0.05). Amino acid contents had negative correlations with the scavenging activity (specifically, IC50) of 1,1-diphenyl-2-picrylhydrazyl and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) radicals (r = − 0.986 to − 1.000). Reducing power was related to aromatic amino acid contents (r = 0.997, p < 0.05). In this study, enzymatic hydrolysis was discovered to be an effective method of extracting and isolating natural antioxidant proteins from broken rice, thus preserving the nutritional quality of rice and making those proteins more accessible in future applications. © 2023, The Author(s).

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Small molecule tractable PARP inhibitors: Scaffold construction approaches, mechanistic insights and structure activity relationship

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Bioorganic Chemistry 2023年 141卷 106893页

作者： Thakur, Amandeep Rana, Mandeep Ritika Mathew, Jacob Nepali, Sanya Pan, Chun-Hsu Liou, Jing Ping Nepali, Kunal School of Pharmacy College of Pharmacy Taipei Medical University Taipei 110031 Taiwan College of Medicine Taipei Medical University Taipei 110031 Taiwan Department of Chemical Engineering National Taiwan University of Science and Technology Taipei 106335 Taiwan Manipal School of Life Sciences Manipal Academy of Higher Education Manipal 576104 India Ph.D. Program in Drug Discovery and Development Industry College of Pharmacy Taipei Medical University Taiwan

diverse drug design strategies viz. molecular hybridization, substituent installation, scaffold hopping, isosteric replacement, high-throughput screening, induction and separation of chirality, structure modifications of phytoconstituents and use of structural templates have been exhaustively leveraged in the last decade to load the chemical toolbox of PARP inhibitors. Resultantly, numerous promising scaffolds have been pinpointed that in turn have led to the resuscitation of the credence to PARP inhibitors as cancer therapeutics. This review briefly presents the physiological functions of PARPs, the pharmacokinetics, and pharmacodynamics, and the interaction profiles of FdA-approved PARP inhibitors. Comprehensively covered is the section on the drug design strategies employed by drug discovery enthusiasts for furnishing PARP inhibitors. The impact of structural variations in the template of designed scaffolds on enzymatic and cellular activity (structure–activity relationship studies) has been discussed. The insights gained through the biological evaluation such as profiling of physicochemical properties and in vitro AdME properties, PK assessments, and high-dose pharmacology are covered. © 2023 Elsevier Inc.

关键词： BRCA mutations Cancer dNA damage Molecular hybridization PARP inhibitors Scaffold hopping Tumor

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Emission characteristics of naphthalene from ship exhausts under global sulfur cap

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science of the Total Environment 2023年 902卷 166172页

作者： Yeh, Chin-Ko Tzu, Fu-Ming Chen, Po-Yang Shen, Hsueh-Chen Yuan, Chung-Shin Lin, Chitsan Pu, Han-Pin Ngo, Huu Hao Bui, Xuan-Thanh Department of Marine Engineering National Kaohsiung University of Science and Technology Kaohsiung805301 Taiwan Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung811213 Taiwan Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung811213 Taiwan Institute of Environmental Engineering National Sun Yat-sen University Kaohsiung804201 Taiwan School of Civil and Environmental Engineering University of Technology Sydney SydneyNWS2007 Australia 268 Ly Thuong Kiet Street District 10 Ho Chi Minh City Viet Nam Linh Trung ward Ho Chi Minh City700000 Viet Nam

The global sulfur limit regulation mandates the use of 0.5 % low sulfur fuel oil (LSFO) to reduce emissions of sulfur oxides (SOx), nitrogen oxides (NOx), and particulate matter (PM). However, the addition of naphthalene (Nap) to LSFO to stabilize its quality has led to an increase in polycyclic aromatic hydrocarbons (PAHs), with Nap being the main pollutant. This study investigates the effects of Nap in ship exhaust by analyzing the emission concentrations of volatile organic compounds (VOCs) and Nap in the exhaust of 16 ships, including 2 container ships, 6 bulk carriers, 1 tanker, 2 ferries, 3 fishing vessels, and 2 harbor crafts, based on USEPA method TO-15A. The results show that the percentage of Nap emissions in the exhaust gases of the 16 ship engines ranged from 77 % to 97 % of the total volatile organic compound (TVOC). The Nap concentration in the exhaust of fishing vessels, tanker, and harbor craft exceeded the occupational exposure limit of 50,000 μg/m3, with fishing vessels having the highest TVOC and Nap concentrations. The enhanced Nap emission in the air degrades air quality in port cities and poses an obvious potential public health risk. While the benefits of the global sulfur cap are being secured, additional efforts should be made to reduce the undetected side effects. Alternative stabilizers of LSFO should be considered, or Nap emission control should be boosted to mitigate the potential negative impact on harbor air quality. © 2023 Elsevier B.V.

关键词： Air quality

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Biomechanical comparisons of dynamic fixators with rod-rod and screw-spacer joints on lumbar hybrid fixation

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Clinical Biomechanics 2023年 104卷 105943-105943页

作者： Xu, Yu-Kun Weng, Pei-Wei Chen, Shih-Hao Lin, Shang-Chih Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei Taiwan Graduate Institute of Biomedical Engineering National Taiwan University of Science and Technology Taipei Taiwan Department of Orthopedics Shuang Ho Hospital Taipei Medical University Taipei Taiwan International Ph.D. Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei Taiwan Department of Orthopaedics School of Medicine College of Medicine Taipei Medical University Taipei Taiwan Research Center of Biomedical Device Taipei Medical University Taipei Taiwan Tzu Chi General Hospital at Taichung and Tzu Chi University Taiwan

Background: Hybrid fixators with quite different joint design concepts have been widely to suppress adjacent segment degeneration problems. The kinematic and kinetic responses of the adjacent and transition segments and contact behaviors at the bone-screw interfaces served as the objective of this study. Methods: The moderately degenerated L4/L5 and mildly degenerative L3/L4 segments were respectively immobilized by a static fixator and further bridged by the rod-rod (Isobar) and screw-spacer (dynesys) fixator. The joint stiffness and mobility of the rod-rod system and the cable pretension of the screw-spacer system were systematically varied. Findings: The flexion of the screw-spacer system provided higher mobility to the transition segment, reducing adjacent-segment problems. The cable pretension had a minor effect on the construct behavior. However, due to limited joint mobility, the rod-rod system showed higher constraints to the transition segment and induced more adjacent-segment compensations. The increased mobility of the rod-rod joint caused it to behave as a more dynamic fixator that increased adjacent-segment compensations at the transition segment. Comparatively, increasing the joint mobility showed more significant effects on the construct behaviors than decreasing the joint stiffness. Furthermore, increased constraint by the rod-rod joint induced higher stress and risk of loosening at the bone-screw interfaces Interpretation: If the protection of the transition segment is the major concern, the rod-rod system can be used to constrain the intervertebral motion and share the higher loads through the fixator. Otherwise, the screw-spacer system is recommended in situations where higher loads onto the transition disc are allowable. © 2023 Elsevier Ltd

关键词： Screws

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YAP-regulated type II alveolar epithelial cell differentiation mediated by human umbilical cord-derived mesenchymal stem cells in acute respiratory distress syndrome

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Biomedicine and pharmacotherapy 2023年 159卷 114302-114302页

作者： Chen, Xiao-Yue Chen, Kuan-Yuan Feng, Po-Hao Lee, Kang-Yun Fang, Yu-Ting Chen, You-Yin Lo, Yu-Chun Bhavsar, Pankaj K. Chung, Kian Fan Chuang, Hsiao-Chi Graduate Institute of Medical Sciences College of Medicine Taipei Medical University Taipei Taiwan School of Respiratory Therapy College of Medicine Taipei Medical University Taipei Taiwan National Heart and Lung Institute Imperial College London London United Kingdom Division of Pulmonary Medicine Department of Internal Medicine Shuang Ho Hospital Taipei Medical University New Taipei City Taiwan Division of Pulmonary Medicine Department of Internal Medicine School of Medicine College of Medicine Taipei Medical University Taipei Taiwan Department of Biomedical Engineering National Yang Ming Chiao Tung University Taipei Taiwan The Ph.D. Program for Neural Regenerative Medicine College of Medical Science and Technology Taipei Medical University Taipei Taiwan Industrial Ph.D. Program of Biomedical Science and Engineering National Yang Ming Chiao Tung University Taipei Taiwan Cell Physiology and Molecular Image Research Center Wan Fang Hospital Taipei Medical University Taipei Taiwan

Acute respiratory distress syndrome (ARdS) contributes to higher mortality worldwide. Human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) have immunomodulatory and regenerative potential. However, the effects of hUC-MSCs as an ARdS treatment remain unclear. We investigated the role of hUC-MSCs in the differentiation of type II alveolar epithelial cells (AECII) by regulating Yes-associated protein (YAP) in ARdS. Male C57BL/6JNarl mice were intratracheally (i.t.) administered lipopolysaccharide (LPS) to induce an ARdS model, followed by a single intravenous (i.v.) dose of hUC-MSCs. hUC-MSCs improved pulmonary function, decreased inflammation on day 3, and mitigated lung injury by reducing the lung injury score and increasing lung aeration (%) in mice on day 7 (p < 0.05). hUC-MSCs inactivated YAP on AECII and facilitated cell differentiation by decreasing Pro-surfactant protein C (Pro-SPC) and galectin 3 (LGALS3) while increasing podoplanin (T1α) in lungs of mice (p < 0.05). In AECII MLE-12 cells, both coculture with hUC-MSCs after LPS exposure and the YAP inhibitor, verteporfin, reduced Pro-SPC and LGALS3, whereas the YAP inhibitor increased T1α expression (p < 0.05). In conclusion, hUC-MSCs ameliorated lung injury of ARdS and regulated YAP to facilitate AECII differentiation. © 2023 The Authors

关键词： Alveoli Inflammation Pneumocytes Regeneration Stem cells

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Seasonal influence on pollution index and risk of multiple compositions of microplastics in an urban river

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science of the Total Environment 2023年第PT 1期859卷 160021页

作者： Huang, Chi-Wei Li, Yi-Lin Lin, Chitsan Bui, Xuan-Thanh Vo, Thi-dieu-Hien Ngo, Huu Hao Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Ph.D. Program in Maritime Science and Technology College of Maritime National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan 268 Ly Thuong Kiet Street District 10 Ho Chi Minh City Viet Nam Linh Trung ward Ho Chi Minh City700000 Viet Nam Faculty of Environmental and Food Engineering Nguyen Tat Thanh University Ho Chi Minh City Viet Nam School of Civil and Environmental Engineering University of Technology Sydney SydneyNWS2007 Australia

Emerging contaminant microplastics (MPs) are getting worldwide attention for their ubiquitous occurrence and potential risk to the environment. However, the seasonal influence on freshwater MP pollution remains poorly understood. To better understand and evaluate the riverine MPs in different seasons, this study conducted the risk assessment of MPs in an urban river, Houjin River, during the different seasons. The present study found that the MPs (0.1–5 mm, mostly 0.1–2 mm) were more abundant in the dry season (183.33 ± 128.95 items/m3) compared with the wet season (102.08 ± 45.80 items/m3). Similarly, the mixture of different MPs polymers was more diverse in the dry season. The related pollution indices such as the contamination factor (CF) and pollution load index (PLI) showed that average CF and PLI were 5.15 and 2.10 in the dry season, which significantly decreased to 1.58 and 1.25, respectively, in the wet season (p © 2022 Elsevier B.V.

关键词： Risk assessment

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Rhodiola and Salidroside Attenuate Oxidative Stress-Triggered H9c2 Cardiomyoblast Apoptosis Through IGF1R-Induced ERK1/2 Activation

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Environmental Toxicology 2024年第11期39卷 5150-5161页

作者： Ju, I-Ju Tsai, Bruce Chi-Kang Kuo, Wei-Wen Kuo, Chia-Hua Lin, Yueh-Min Hsieh, dennis Jine-Yuan Pai, Pei-Ying Huang, Shang-En Lu, Shang-Yeh Lee, Shin-da Huang, Chih-Yang Division of General Medicine Department of Medical Education Tri-Service General Hospital National Defense Medical Center Taipei Taiwan Department of Neurological Surgery Tri-Service General Hospital National Defense Medical Center Taipei Taiwan Cardiovascular and Mitochondrial Related Disease Research Center Hualien Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation Hualien Taiwan Department of Biological Science and Technology College of Life Sciences China Medical University Taichung Taiwan Ph.D. Program for Biotechnology Industry China Medical University Taichung Taiwan School of Pharmacy China Medical University Taichung Taiwan Laboratory of Exercise Biochemistry University of Taipei Taipei Taiwan Institute of Sports Sciences University of Taipei Taipei Taiwan Department of Kinesiology and Health Science College of William and Mary WilliamsburgVA United States School of Physical Education and Sports Science Soochow University Jiangsu Suzhou China Department of Pathology Changhua Christian Hospital Changhua Taiwan School of Medicine Chung Shan Medical University Taichung Taiwan School of Medical Laboratory and Biotechnology Chung Shan Medical University Taichung Taiwan Clinical Laboratory Chung Shan Medical University Hospital Taichung Taiwan Division of Cardiovascular Medicine Department of Internal Medicine China Medical University Hospital Taichung Taiwan School of Medicine College of Medicine China Medical University Taichung Taiwan Graduate Institute of Chinese Medicine China Medical University Taichung Taiwan Graduate Institute of Biomedical Sciences China Medical University Taichung Taiwan School of Rehabilitation Science Shanghai University of Traditional Chinese Medicine Shanghai China School of Rehabilitation Medicine Weifang Medical University Shandong Weifang China Department of Physical Therapy Graduate Institute of Rehabilitation Science China Medical University Taichung Taiwan Department of Medical Research China Medic

Oxidative stress is a pivotal factor in the pathogenesis of various cardiovascular diseases. Rhodiola, a traditional Chinese medicine, is recognized for its potent antioxidant properties. Salidroside, a phenylpropanoid glycoside derived from Rhodiola rosea, has shown remarkable antioxidant capabilities. This study aimed to elucidate the potential protective mechanisms of Rhodiola and salidroside against H2O2-induced cardiac apoptosis in H9c2 cardiomyoblast cells. H9c2 cells were exposed to H2O2 for 4 h, and subsequently treated with Rhodiola or salidroside for 24 h. Cell viability and apoptotic pathways were assessed. The involvement of insulin-like growth factor 1 receptor (IGF1R) and the activation of extracellular regulated protein kinases 1/2 (ERK1/2) were investigated. H2O2 (100 μM) exposure significantly induced cardiac apoptosis in H9c2 cells. However, treatment with Rhodiola (12.5, 25, and 50 μg/mL) and salidroside (0.1, 1, and 10 nM) effectively attenuated H2O2-induced cytotoxicity and apoptosis. This protective effect was associated with IGF1R-activated phosphorylation of ERK1/2, leading to the inhibition of Fas-dependent proteins, HIF-1α, Bax, and Bak expression in H9c2 cells. The images from hematoxylin and eosin staining and immunofluorescence assays also revealed the protective effects of Rhodiola and salidroside in H9c2 cells against oxidative damage. Our findings suggest that Rhodiola and salidroside possess antioxidative properties that mitigate H2O2-induced apoptosis in H9c2 cells. The protective mechanisms involve the activation of IGF1R and subsequent phosphorylation of ERK1/2. These results propose Rhodiola and salidroside as potential therapeutic agents for cardiomyocyte cytotoxicity and apoptosis induced by oxidative stress in heart diseases. Future studies may explore their clinical applications in cardiac health. © 2024 Wiley Periodicals LLC.

关键词： Cell death

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The mitochondrial stress signaling tunes immunity from a view of systemic tumor microenvironment and ecosystem

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iscience 2024年第9期27卷

作者： Kuo, Cheng-Liang Lin, Ying-Chen Lo, Yu Kang Lu, Yu-Zhi Babuharisankar, Ananth Ponneri Lien, Hui-Wen Chou, Han-Yu Lee, Alan Yueh-Luen National Institute of Cancer Research National Health Research Institutes Miaoli Zhunan 35053 Taiwan Department of Life Sciences College of Health Sciences & Technology National Central University Taoyuan Zhongli 32001 Taiwan Ph.D. Program in Tissue Engineering and Regenerative Medicine College of Medicine National Chung Hsing University Taichung 40402 Taiwan Graduate Institute of Biomedical Sciences China Medical University Taichung 40402 Taiwan Department of Biotechnology College of Life Science Kaohsiung Medical University Kaohsiung 80708 Taiwan

Mitochondria play important roles in cell fate, calcium signaling, mitophagy, and the signaling through reactive oxygen species (ROS). Recently, mitochondria are considered as a signaling organelle in the cell and communicate with other organelles to constitute the mitochondrial information processing system (MIPS) that transduce input-to-output biological information. The success in immunotherapy, a concept of systemic therapy, has been proved to be dependent on paracrine interactions within the tumor microenvironment (TME) and distant organs including microbiota and immune components. We will adopt a broader view from the concept of TME to tumor micro- and macroenvironment (TM²E) or tumor-organ ecosystem (TOE). In this review, we will discuss the role of mitochondrial signaling by mitochondrial ROS, calcium flux, metabolites, mtdNA, vesicle transportation, and mitochondria-derived peptide in the TME and TOE, in particular immune regulation and effective cancer immunotherapy. © 2024 The Author(s)

关键词： Cancer Immune response Microenvironment

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Transfer learning for decision support in Covid-19 detection from a few images in big data

Transfer learning for decision support in Covid-19 detection...

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IEEE International Conference on Big data

作者： divydharshini Karthikeyan Aparna S. Varde Weitian Wang Montclair State University Montclair NJ USA Environmental Science and Management Ph.D. program Montclair State University Montclair NJ USA

ISBN: (数字)9781728162515

ISBN: (纸本)9781728162522

The novel coronavirus (Covid-19) has spread rapidly amongst countries all around the globe. Compared to the rise in cases, there are few Covid-19 testing kits available. due to the lack of testing kits for the public, it is useful to implement an automated AI-based E-health decision support system as a potential alternative method for Covid-19 detection. As per medical examinations, the symptoms of Covid-19 could be somewhat analogous to those of pneumonia, though certainly not identical. Considering the enormous number of cases of Covid-19 and pneumonia, and the complexity of the related images stored, the data pertaining to this problem of automated detection constitutes big data. With rapid advancements in medical imaging, the development of intelligent predictive and diagnostic tools have also increased at a rapid rate. data mining and machine learning techniques are widely accepted to aid medical diagnosis. In this paper, a huge data set of X-ray images from patients with common bacterial pneumonia, confirmed Covid-19 disease, and normal healthy cases are utilized for AI-based decision support in detecting the Coronavirus disease. The transfer learning approach, which enables us to learn from a smaller set of samples in a problem and transfer the discovered knowledge to a larger data set, is employed in this study. We consider transfer learning using three different models that are pre-trained on several images from the ImageNet source. The models deployed here are VGG16, VGG19, and ResNet101. The dataset is generated by gathering different classes of images. We present our approach and preliminary evaluation results in this paper. We also discuss applications and open issues.

关键词： COVId-19 Training Transfer learning Lung Big data X-ray imaging Testing

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Frequency-responsive sorption of metal ions onto magnetic polyvinyltetrazole microspheres through a solenoid-wrapped glass tube with magnetophoresis force

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Journal of Water Process Engineering 2024年 63卷

作者： Chen, Chih-Wei Wang, Chih-Feng Lu, Chien-Hsing Chen, Jem-Kun Department of Materials Science and Engineering National Taiwan University of Science and Technology 43 Sec. 4 Keelung Road Taipei 106 Taiwan Division of Neurosurgery Department of Surgery Chi Mei Medical Center Tainan 710 Taiwan Institute of Advanced Semiconductor Packaging and Testing National Sun Yat-sen University Kaohsiung 804 Taiwan Department of Obstetrics and Gynecology Taichung Veterans General Hospital Taichung 40705 Taiwan Institute of Biomedical Sciences Ph.D. Program in Translational Medicine Rong-Hsing Research Center for Translational Medicine National Chung-Hsing University Taichung 940227 Taiwan

Concentration gradient predominantly determining both the diffusion rate and the removal rate of pollutants by adsorbents. An external magnetophoresis force (FMEP) is introduced to accelerate the adsorption of metal i... 详细信息

Concentration gradient predominantly determining both the diffusion rate and the removal rate of pollutants by adsorbents. An external magnetophoresis force (F_MEP) is introduced to accelerate the adsorption of metal ions on adsorbents under an alternating magnetic field (AMF). A solenoid-wrapped glass tube (SWGT) containing adsorbents is designed to generate F_MEP in a flowing system. Magnetic Fe₃O₄ nanoparticles (MFs) are coated on polyacrylonitrile microspheres (PANs) as precursors (PAN@MFs) by Pickering emulsion polymerization. The core@shell polyvinyltetrazole@MFs (PVT@MFs) are obtained as the adsorbents after subsequent cyano-tetrazole conversion of PAN@MFs for the adsorption of Pb(II), Cu(II), and Cr(III) ions. The theoretical adsorption rate constants of these metal ions onto the PVT@MFs in the presence of F_MEP are enhanced by approximately three times under an AMF at 1 kHz and 87.6 G. At a high frequency of 10 kHz, hyperthermia occurs on the PVT@MFs, facilitating the desorption of metal ions from the adsorbents. Compared with reuse using an acidic solution, the magnetic PVT@MFs can be reused up to 10 times by switching the frequency of the AMF between 1 and 10 kHz. Our proposed platform provides a novel methodology with a magnetic adsorbent for metal ions to rapidly improve either the adsorption or desorption processes. © 2024

关键词： Adsorption rate Hyperthermia Magnetic susceptibility Polyvinyltetrazole

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