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Ultrasensitive and selective electrochemical detection of hydroquinone using electropolymerized 7-amino cephalosporanic acid modified GCE

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Surface and Coatings Technology 2025年 512卷

作者： H. Sathya Pandiaraja Varatharajan M.A. Ashkar M. Chandhru Mani Govindasamy S. Kutti Rani N. Vasimalai Department of Chemistry B.S. Abdur Rahman Crescent Institute of Science and Technology Vandalur Chennai 600 048 India International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan Department of Physics B.S. Abdur Rahman Crescent Institute of Science and Technology Vandalur Chennai 600 048 India Centre for Applied Research Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences (SIMATS) Chennai 602105 Tamil Nadu India Research Center for Intelligent Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan

Industrial wastewater pollution harms ecosystems and hinders sustainable development growth. Particularly, hydroquinone (HQ) has transitioned from a commercial chemical to an environmental hazard because of its extensive use in beauty products, pharmaceuticals, chemicals, and food industries. Therefore, developing electrochemical sensors for the detection of HQ is very important for environmental safety. Herein, the 7-ACA monomer was electropolymerized on the glassy carbon electrode (GCE) surface to examine the electrochemical oxidation of HQ utilizing CV (cyclic voltammetry) and dPV (differential pulse voltammetry) techniques. Scanning electron microscopy (SEM) characterization verified the deposition of the p-7-ACA on the glassy carbon electrode (GCE) surface. The designed p-7-ACA@GCE sensor exhibited better electrocatalytic properties. The acquired dPV observations for the p-7-ACA@GCE demonstrated excellent limit of detection (LOd) 8.86 nmol L −1 and broad linear range (0.33 μM to 955 μM) for the detection of HQ. The developed sensor exhibits excellent repeatability, reproducibility, selectivity and better cyclic stability. In addition, the fabricated p-7-ACA@GCE was used to determine the HQ in a different environmental water sample.

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A self-powered multifunctional dressing for active infection prevention and accelerated wound healing

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Science Advances 2023年第4期9卷 eadc8758页

作者： Barman, Snigdha Roy Chan, Shuen-Wen Kao, Fu-Cheng Ho, Hsuan-Yu Khan, Imran Pal, Arnab Huang, Chih-Ching Lin, Zong-Hong Institute of Biomedical Engineering National Tsing Hua University Hsinchu30013 Taiwan International Intercollegiate Ph.D. Program National Tsing Hua University Hsinchu30013 Taiwan Department of Biomedical Engineering and Environmental Sciences National Tsing Hua University Hsinchu30013 Taiwan Department of Orthopaedic Surgery Spine Section Chang Gung Memorial Hospital Taoyuan33305 Taiwan College of Medicine Chang Gung University Taoyuan33302 Taiwan Department of Power Mechanical Engineering National Tsing Hua University Hsinchu30013 Taiwan Institute of NanoEngineering and Microsystems National Tsing Hua University Hsinchu30013 Taiwan Department of Bioscience and Biotechnology National Taiwan Ocean University Keelung202301 Taiwan Center of Excellence for the Oceans National Taiwan Ocean University Keelung202301 Taiwan School of Pharmacy College of Pharmacy Kaohsiung Medical University Kaohsiung80708 Taiwan Department of Chemistry National Tsing Hua University Hsinchu30013 Taiwan Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu30013 Taiwan Department of Biomedical Engineering National Taiwan University Taipei10617 Taiwan

Interruption of the wound healing process due to pathogenic infection remains a major health care challenge. The existing methods for wound management require power sources that hinder their utilization outside of clinical settings. Here, a next generation of wearable self-powered wound dressing is developed, which can be activated by diverse stimuli from the patient’s body and provide on-demand treatment for both normal and infected wounds. The highly tunable dressing is composed of thermocatalytic bismuth telluride nanoplates (Bi2Te3 NPs) functionalized onto carbon fiber fabric electrodes and triggered by the surrounding temperature difference to controllably generate hydrogen peroxide to effectively inhibit bacterial growth at the wound site. The integrated electrodes are connected to a wearable triboelectric nanogenerator (TENG) to provide electrical stimulation for accelerated wound closure by enhancing cellular proliferation, migration, and angiogenesis. The reported self-powered dressing holds great potential in facilitating personalized and user-friendly wound care with improved healing outcomes. Copyright © 2023 The Authors, some rights reserved.

关键词： Patient treatment

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Lung cancer cells detection by a photoelectrochemical MoS2 biosensing chip

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Biomedical Optics Express 2024年第2期15卷 753-771页

作者： Chun-Liang Lai Riya Karmakar Arvind Mukundan Wei-Chung Chen I-Chen Wu Vladimir E. Fedorov Shih-Wei Feng Ubol Choomjinda Shu-Fang Huang Hsiang-Chen Wang Division of Pulmonology and Critical Care Department of Internal Medicine Dalin Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation No. 2 Minsheng Road Dalin Chiayi 62247 Taiwan School of Medicine Tzu Chi University 701 Zhongyang Rd. Sec. 3 Hualien 97004 Taiwan Department of Mechanical Engineering and Center for Innovative Research on Aging Society (CIRAS) National Chung Cheng Universityhttps://***/0028v3876 168 University Road Min Hsiung Chiayi City 62102 Taiwan Ph.D. Program in Environmental and Occupational Medicine Kaohsiung Medical University Kaohsiung 807 Taiwan Department of Medicine and Graduate Institute of Clinical Medicine College of Medicine Kaohsiung Medical University No. 100 Tzyou 1st Rd. Sanmin Dist. Kaohsiung City 80756 Taiwan Nikolaev Institute of Inorganic Chemistry Siberian Branch of Russian Academy of Sciences Novosibirsk 630090 Russia Department of Natural Sciences Novosibirsk State University 1 Pirogova str. Novosibirsk 630090 Russia Department of Applied Physics National University of Kaohsiung 700 Kaohsiung University Rd. Nanzih District Kaohsiung 81148 Taiwan School of Nursing Shinawatra University 99 Moo 10 Bangtoey Samkhok Pathum Thani 12160 Thailand Division of Chest Medicine Kaohsiung Armed Forces General Hospital 2 Zhongzheng 1st. Rd. Kaohsiung City 80284 Taiwan ryanhuang1128@*** hcwang@ccu.edu.tw (hcwang@ccu.edu.tw)

This research aims to explore the potential application of this approach in the production of biosensor chips. The biosensor chip is utilized for the identification and examination of early-stage lung cancer cells. The findings of the optical microscope were corroborated by the field emission scanning electron microscopy, which provided further evidence that the growth of MoS 2 is uniform and that there is minimal disruption in the electrode, hence minimizing the likelihood of an open circuit creation. Furthermore, the bilayer structure of the produced MoS 2 has been validated through the utilization of Raman spectroscopy. A research investigation was undertaken to measure the photoelectric current generated by three various types of clinical samples containing lung cancer cells, specifically the CL1, NCI-H460, and NCI-H520 cell lines. The findings from the empirical analysis indicate that the coefficient of determination (R-Square) for the linear regression model was approximately 98%. Furthermore, the integration of a double-layer MoS 2 film resulted in a significant improvement of 38% in the photocurrent, as observed in the device's performance.

关键词： Absorption coefficient Chemical vapor deposition Optical absorption physical vapor deposition Scanning electron microscopy Thin films

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Highly efficient capture of E. coli using amidoximated polyacrylonitrile nanofiber membrane immobilized with reactive green 19 dye/polyhexamethylene biguanide: Antibacterial and cytotoxicity studies

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Separation and Purification Technology 2024年 338卷

作者： Quang-Vinh Le Bing-Lan Liu Penjit Srinophakun Jeng-Ywan Shih Chi-Yun Wang Chen‑Yaw Chiu Shen-Long Tsai Kuei-Hsiang Chen Yu-Kaung Chang Department of Chemical Engineering National Taiwan University of Science and Technology Taipei City 10607 Taiwan Department of Applied Chemistry Chaoyang University of Technology Taichung 413310 Taiwan Department of Chemical Engineering Kasetsart University 50 Ngamwongwan Road Chatuchak Bangkok 10900 Thailand Department of Chemical Engineering Ming Chi University of Technology New Taipei City 243303 Taiwan International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan Bone and Joint Research Centre Chang Gung Memorial Hospital Taoyuan City 333423 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Zhongli Dist. Taoyuan City 320315 Taiwan

In this study, we synthesized an amidoximated polyacrylonitrile nanofiber membrane (P-Oxime). Subsequently, we grafted reactive green 19 (RG19) dye onto its surface, resulting in the formation of the P-Oxime-RG19 membrane. Further enhancement was achieved by physically attaching poly(hexamethylene biguanide) hydrochloride (phMB) to the P-Oxime-RG19 membrane, leading to the formation of the P-Oxime-RG19-phMB membrane. Extensive characterization of the nanofiber membranes was conducted, focusing on crucial physical and mechanical properties such as functional group content, morphology, and thermostability. The optimization of various modification conditions, including initial dye and phMB concentrations, duration, temperature, and nitrile group conversion to oxime concentrations, played a pivotal role in achieving superior antibacterial performance in P-Oxime-RG19-phMB nanofiber membranes. In-depth analyses involved the application of kinetic and equilibrium thermodynamic models to unravel the modification processes of RG19 dye and phMB in the nanofiber membranes. Under the carefully tuned optimal modification conditions, the P-Oxime-RG19-phMB nanofiber membrane exhibited remarkable antibacterial efficacy, achieving nearly 100% disinfection of E. coli . In addition to exploring its antimicrobial capabilities, we thoroughly examined the repeatability and biocompatibility of the nanofiber membranes. The results indicated not only the P-Oxime-RG19-phMB nanofiber membrane was a highly promising antibacterial material but also highlighted its potential for diverse applications, particularly in food and textile fabrication, owing to its exceptional performance and suitability.

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Self-assemble nano particle array on transparent glass as selective absorption spectra (SANP-GTAS) 22

Self-assemble nano particle array on transparent glass as se...

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22nd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2018

作者： Koduri, Manohar Prasad Kumar, Ashish Goudar, Venkanagouda Tseng, Fan Gang International Intercollegiate Ph.D. Program National Tsing Hua University Taiwan Department of Engineering and System Science Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Taiwan Research Center for Applied Sciences Academia Sinica Taipei Taiwan

ISBN: (纸本)9781510897571

In this study, we demonstrated a novel technique in selective absorption spectra (AS), on a transparent glass (GT) formed by self-assembled Nanoparticle array (SANP) and observed a narrow band absorption in the green wavelength region. The single layer deposition on a transparent glass is achieved by using the in-house developed self-assembly deposition technique. The monolayer retains the shape of hexagonal arrangement in between Nanoparticles and forms a regular array structure. Copyright © (2018) by Chemical and Biological Microsystems Society. All rights reserved.

关键词： Self assembly

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Electrochemical sensor based on ZnO@MWCNT/ glassy carbon electrode for the detection of warfarin (blood anticoagulant)

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Surfaces and Interfaces 2025年 67卷

作者： Manjunath, Kumbar Mudakappa Yemmi, Rajeshwari Swamy, B.E. Kumara Eldesoky, Gaber E. Govindasamy, Mani Division of Plant Breeding and Genetics Central Coffee Research Institute Karnataka Chikkamagaluru 577117 India Department of Industrial Chemistry Kuvempu University Karnataka Shivamogga India Department of Chemistry College of Science King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan Centre for Applied Research Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences (SIMATS) Tamil Nadu Chennai 602105 India Research Center for Intelligence Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan Department of Chemistry Korea University Seoul Seongbuk-gu South Korea

This study employed ZnO nanoparticles, multi-walled carbon nanotubes (MWCNTs), and a modified glassy carbon electrode (GCE) as a quick and sensitive method for detecting warfarin at biological ph levels. The ultrasonication technique was utilized in the synthesis of the ZnO@MWCNTs nanocomposite. The ZnO@MWCNTs were characterized using Transmission electron microscopy (TEM), Scanning electron microscopy (SEM), X-ray diffraction (XRd), spectroscopy, analytical techniques, and electrochemical impedance spectroscopy (EIS). Cyclic voltammetry (CV) as well as differential pulse voltammetry (dPV) techniques are employed in the presence of PBS buffer as an electrolyte. We observed unique oxidative peak currents an indication of the electrochemical mechanism of warfarin at low potentials for ZnO @MWCNTs/GCE. Moreover, we successfully attained effective electrochemical detection of warfarin utilizing the proposed sensor, which exhibited an excellent low limit of detection (LOd) of 0.0188 μM across a linear range of 0.02–2867.37 μM. The proposed sensor exhibits excellent storage stability, repeatability, and reproducibility, and has been effectively utilized for the quantification of warfarin in real samples, including blood serum and urine as obtained good recovery and RSd value. © 2025 Elsevier B.V.

关键词： differential pulse voltammetry Glassy carbon electrode Multiwalled carbon nanotubes Warfarin ZnO nanoparticles

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The split common fixed point problem for infinite families of demicontractive mappings

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Fixed Point Theory and Applications 2018年第1期2018卷 1-21页

作者： Hanjing, Adisak Suantai, Suthep Ph.D. Degree Program in Mathematics Faculty of Science Chiang Mai University Chiang Mai Thailand Center of Excellence in Mathematics and Applied Mathematics Department of Mathematics Faculty of Science Chiang Mai University Chiang Mai Thailand Center of Excellence in Mathematics CHE Bangkok Thailand

In this paper, we propose a new algorithm for solving the split common fixed point problem for infinite families of demicontractive mappings. Strong convergence of the proposed method is established under suitable control conditions. We apply our main results to study the split common null point problem, the split variational inequality problem, and the split equilibrium problem in the framework of a real Hilbert space. A numerical example supporting our main result is also given. © 2018, The Author(s).

关键词： demicontractive mappings Equilibrium problem Fixed point problem Null point problem Variational inequality problem

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Correction to: Biological synthesis and characterization of iron oxide (FeO) nanoparticles using Pleurotus citrinopileatus extract and its biomedical applications

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Biomass Conversion and Biorefinery 2023年第11期14卷 12587-12587页

作者： Manimaran, Kumar Yanto, dede Heri Yuli Govindasamy, Mani Karunanithi, Bogeshwaran Alasmary, Fatmah Ali Habab, Reem Abdulrahman Research Center for Applied Microbiology National Research and Innovation Agency (BRIN) Cibinong Republic of Indonesia Department of Product Development Institute of Biotechnology Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences (SIMATS) Chennai India Faculty International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City Taiwan Korea University Seongbuk-gu Republic of Korea Department of Research and Innovation Saveetha School of Engineering SIMATS Thandalam India Department of Petroleum Engineering Dhaanish Ahmed College of Engineering Chennai India Department of Chemistry College of Science King Saud University Riyadh Saudi Arabia

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Corrigendum to “Food web analysis shows an exacerbated dependence of zooplankton on detritus in oligotrophic systems due to ocean warming” [Prog. Oceanogr. 231 (2025) 103389]

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Progress in Oceanography 2025年 231卷

作者： Luca Russo Matteo Loschi daniele Bellardini Roberta Congestri Michael W. Lomas Simone Libralato domenico d’Alelio Department of Integrative Marine Ecology Stazione Zoologica Anton Dohrn Villa Comunale 80121 Naples Italy Ph.D. Program in Evolutionary Biology and Ecology Department of Biology University of Rome ‘Tor Vergata’ Via della Ricerca scientifica 1 00133 Rome Italy Section of Oceanography National Institute of Oceanography and Applied Geophysics – OGS Borgo Grotta Gigante 42/C 34010 Sgonico (Trieste) Italy Department of Life Sciences University of Trieste via Weiss 2 34128 Trieste Italy DiSTAV Department of Earth Environment and Life Sciences University of Genoa Corso Europa 26 16132 Genoa Italy Laboratory of Biology of Algae Department of Biology University of Rome ‘Tor Vergata’ Via Cracovia 1 00133 Rome Italy Bigelow Laboratory for Ocean Sciences 60 Bigelow Drive East Boothbay ME 04544 USA NBFC National Biodiversity Future Center Piazza Marina 61 90133 Palermo Italy

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Worm Perturb-Seq: massively parallel whole-animal RNAi and RNA-seq

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Nature communications 2025年第1期16卷 4785页

作者： Hefei Zhang Xuhang Li dongyuan Song Onur Yukselen Shivani Nanda Alper Kucukural Jingyi Jessica Li Manuel Garber Albertha J M Walhout Department of Systems Biology University of Massachusetts Chan Medical School Worcester MA USA. Bioinformatics Interdepartmental Ph.D. Program University of California Los Angeles CA USA. Department of Genetics and Genome Sciences University of Connecticut Health Center Farmington CT USA. Via Scientific Inc. Cambridge MA USA. Pathology Beth Israel Deaconess Medical Center Harvard Medical School Boston MA USA. Department of Genomics and Computational Biology University of Massachusetts Chan Medical School Worcester MA USA. Department of Statistics and Data Science Department of Biostatistics Department of Computational Medicine and Department of Human Genetics University of California Los Angeles CA USA. Department of Genomics and Computational Biology University of Massachusetts Chan Medical School Worcester MA USA. manuel.garber@umassmed.edu. Department of Systems Biology University of Massachusetts Chan Medical School Worcester MA USA. marian.walhout@umassmed.edu.

Transcriptomes provide highly informative molecular phenotypes that, combined with gene perturbation, can connect genotype to phenotype. An ultimate goal is to perturb every gene and measure transcriptome changes, however, this is challenging, especially in whole animals. Here, we present 'Worm Perturb-Seq (WPS)', a method that provides high-resolution RNA-sequencing profiles for hundreds of replicate perturbations at a time in living animals. WPS introduces multiple experimental advances combining strengths of Caenhorhabditis elegans genetics and multiplexed RNA-sequencing with a novel analytical framework, EmpirdE. EmpirdE leverages the unique power of large transcriptomic datasets and improves statistical rigor by using gene-specific empirical null distributions to identify dEGs. We apply WPS to 103 nuclear hormone receptors (NHRs) and find a striking 'pairwise modularity' in which pairs of NHRs regulate shared target genes. We envision the advances of WPS to be useful not only for C. elegans, but broadly for other models, including human cells.

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