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Enhanced electrochemical detection of tartrazine in beverages and liquid soap via nickel phosphide-adorned functionalized carbon nanofibers

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Journal of the Taiwan Institute of Chemical Engineers 2024年 157卷

作者： Gokulkumar, Kumar Huang, Song-Jeng Kogularasu, Sakthivel Aljuwayid, Ahmed M. Maheshwaran, Selvarasu Govindasamy, Mani Department of Mechanical Engineering National Taiwan University of Science and Technology Taipei City106335 Taiwan Super micro mass research and technology center Cheng Shiu University Kaohsiung833301 Taiwan Center for Environmental Toxin and Emerging-Contaminant Research Cheng Shiu University Kaohsiung833301 Taiwan Department of Chemistry College of Science King Saud University P. O. Box 2455 Riyadh11451 Saudi Arabia Department of Aeronautics and Astronautics National Cheng Kung University Tainan701 Taiwan International Ph.D. Program In Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City243303 Taiwan Tamil Nadu Chennai602105 India

Background: Tartrazine (TAT) is a widely used food colorant dye, offering an orange-yellow hue in various products such as foods, cosmetics, and pharmaceuticals. Despite its popularity, TAT is banned in several countries due to its potential health risks, including respiratory issues, migraines, and skin allergies. Moreover, TAT is linked with adverse effects on human physiology, including mutagenicity, biliary cirrhosis, changes in liver and kidney functions, and neurodegeneration at varying doses. Consequently, the detection of this food additive is crucial for safeguarding human health and protecting aquatic organisms. Methods: In this study, a novel sensor was developed for the detection of TAT, utilizing a composite material made from nickel phosphide decorated with functionalized carbon nanofiber (Ni2P@f-CNF). The Ni2P@f-CNF was synthesized and characterized through several techniques, including X-ray diffraction, X-ray photoelectron spectroscopy, field emission-scanning electron microscopy, and elemental mapping. The composite was then integrated with a glassy carbon electrode to create a sensor. The sensor's performance was evaluated in terms of detection limit, linear range, selectivity, sensitivity, reproducibility, repeatability, and long-term stability. Main Findings: The developed Ni2P@f-CNF composite sensor displayed a lower detection limit of 0.011 µM and a broad linear range from 0.01 to 1875 µM. Its selectivity and sensitivity were exceptional, primarily due to the catalytic activity of the Ni2P@f-CNF composite towards TAT. The sensor also demonstrated excellent reproducibility, repeatability, and notable long-term stability. Importantly, when applied in real-world scenarios, the sensor successfully detected TAT in soft drink and liquid soap samples, yielding high recovery rates between 97.45 % to 99.37 % and 98.26 % to 99.01 %, respectively, underscoring its potential applicability in practical settings. © 2024 Taiwan Institute of Chemical Engineer

关键词： Nickel compounds

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Risk factors for bone cement dislodgement following balloon kyphoplasty for osteoporotic vertebral compression fracture

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Neurochirurgie 2024年第4期70卷 101559-101559页

作者： Chang, Kai-Chieh Huang, Chih-Ta Hsieh, Cheng-Ta Chen, Chien-Min Chang, Chih-Ju Division of Neurosurgery Department of Surgery Cathay General Hospital Taipei City Taiwan Ph.D. Program in Medical Neuroscience College of Medical Science and Technology Taipei Medical University and National Health Research Institutes Taipei 110 Taiwan Department of Biomedical Engineering Yuanpei University of Medical Technology Hsinchu Taiwan Department of Medicine School of Medicine Fu Jen Catholic University New Taipei City Taiwan School of Medicine National Tsing Hua University Hsinchu Taiwan Division of Neurosurgery Department of Surgery Changhua Christian Hospital Changhua Taiwan Department of Leisure Industry Management National Chin-Yi University of Technology Taichung Taiwan Department of Mechanical Engineering National Central University Taoyuan City Taiwan

Objective: The study aimed to determine the incidence and risk factors associated with bone cement dislodgement in patients with osteoporotic vertebral compression fracture following balloon kyphoplasty treatment. Methods: A retrospective study was conducted on 203 patients who underwent kyphoplasty in 255 vertebral bodies between January 2017 and December 2021. The patients were categorized into two groups: the bone cement dislodgment group (n = 16) and the non-bone cement dislodgement group (n = 239). Various patient characteristics and radiologic parameters were evaluated. Statistical analysis involved the assessment of the background homogeneity of the group by using independent sample t tests, chi-square tests, and Fisher's exact. Univariate and multivariate logistic regression analyses were performed to explore the impact of background variables on cement dislodgement. Results: The results revealed that split-type fracture (χ² = 31.706, p < 0.001), DISH (χ² = 18.827, p = 0.011), pedicle fracture (χ² = 22.246, p < 0.001), endplate deficit (χ² = 14.023, p < 0.001), posterior wall injury (χ² = 29.124, p < 0.001), and intervertebral vacuum cleft (χ² = 21.469, p < 0.001) were the factors that significantly differed between the two groups. The multivariate logistic regression analysis revealed posterior wall injury (OR = 12.983, p = 0.025) and intervertebral vacuum cleft (OR = 5.062, p = 0.024) to be independent risk factors. Conclusion: The incidence of bone cement dislodgement in our study was 6.3%. This study underscores the importance of using preoperative radiologic parameters to predict the risk of bone cement dislodgement following balloon kyphoplasty. © 2024 Elsevier Masson SAS

关键词： Balloon kyphoplasty Bone cement dislodgment Osteoporotic vertebral compression fracture

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Parallel mechanism-based robots for single and dual extrusion 3D printing

Parallel mechanism-based robots for single and dual extrusio...

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2019 Conference on Advances in robotics, AIR 2019

作者： Veerapur, Vinay Zemase, Shritej Tillu, Pranav Dwarakanath, T.A. Department of Mechanical Engineering Pillai College of Engineering New Panvel Navi Mumbai410206 India Division of Remote Handling and Robotics BARC Mumbai400085 India

ISBN: (纸本)9781450366502

This paper deals with the development of 3D printing machine using a parallel mechanism based robot. Discussed topics are the high motion resolution, high rigidity, high precision and workspace constraints of the parallel robot in 3D printing. The single extrusion is extended to dual extrusion 3D printing to accommodate very high adaptability in composite material 3D printing. This paper proposes intelligent algorithms based on mirror manipulation. Demonstration of prototype arrangement of dual extrusion 3D printing is done. © 2019 Association for Computing Machinery.

关键词： 3D printers

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Rapid and sensitive LAMP/CRISPR-powered diagnostics to detect different hepatitis C virus genotypes using an ITO-based EG-FET biosensing platform

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Sensors and Actuators B: Chemical 2023年第1期394卷

作者： Ho, Hsin-Ying Kao, Wei-Sin Deval, Piyush Dai, Chia-Yen Chen, Yen-Hsu Yu, Ming-Lung Lin, Che-Hsin Yu, Ling-Shan Institute of BioPharmaceutical Sciences College of Medicine National Sun Yat-sen University Kaohsiung Taiwan Department of Mechanical and Electro-Mechanical Engineering National Sun Yat-sen University Kaohsiung Taiwan Department of Internal Medicine Kaohsiung Medical University Hospital Kaohsiung Medical University Kaohsiung Taiwan Center of Excellence for Metabolic Associated Fatty Liver Disease National Sun Yat-sen University Kaohsiung Taiwan School of medicine College of Medicine National Sun Yat-sen University Kaohsiung Taiwan School of Medicine and Doctoral Program of Clinical and Experimental Medicine College of Medicine National Sun Yat-sen University Taiwan Kaohsiung Taiwan

The hepatitis C virus (HCV), a major causative agent of chronic liver disease, is responsible for the incidence of hepatitis infections worldwide. In line with the World Health Organization's goal of reducing global new infections by 90% and viral hepatitis-related mortality rates by 65% by 2030, we proposed a miniaturized indium tin oxide-based extended gate field-effect transistor biosensor for rapid and specific detection of different HCV genotypes within 20 min. The biosensor combined loop-mediated isothermal amplification (LAMP) and clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated protein 12 (CRISPR/Cas12a)-induced cleavage. The immobilized single-stranded DNA (ssDNA) served as a signal transmitter and underwent CRISPR/Cas12a trans-cleavage, which was triggered by specific nucleic acid pairing with complementary guide RNAs. This resulted in a significant change in the surface potential, which indicated the presence of HCV-viral RNA. The sensor demonstrated high sensitivity, with a detection limit as low as 1 genomic copy/reaction and a 10-fold increase in robustness for low concentration tests. The clinical results are consistent with those of the polymerase chain reaction. This research offered a rapid, sensitive, and digital diagnostic method for HCV viral infections, particularly suited for resource-limited settings, contributing to the elimination of hepatitis. © 2023

关键词： Diagnosis

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Preliminary study on Acoustical Characteristics of Sago Midrib Composite 5

Preliminary study on Acoustical Characteristics of Sago Midr...

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5th International Symposium on Material, Mechatronics and Energy 2018, ISMME 2018

作者： Kusno, Asniawaty Asriani, Sherly Kamil, Kusno Jamala, Nurul Department of Architecture Faculty of Engineering Hasanuddin University Indonesia Study Program of Architecture Engineering Faculty Khairun University Indonesia Mechanical Engineering Department Engineering Faculty Universitas Muslim Indonesia Indonesia

This research is a preliminary study on the use of sago midrib as an acoustic material. This study aims to determine the sago as acoustic material by measuring the absorption coefficient using (impedance tube method) of 100 Hz-1.6 KHz frequencies. The results of measurement were analyzed and compared with common acoustic material available on market as reference. From the measurement of the sago midrib composite, absorption coefficient has fluctuated from low to high frequencies as the absorption coefficient of reference material is found to be more stable. © Published under licence by IOP Publishing Ltd.

关键词： Acoustic impedance

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Optimization approach for a climbing robot with target tracking in WSNs

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Journal of Ocean engineering and Science 2018年第4期3卷 282-287页

作者： Jerwin Prabu A Abhinav Tiwari Department of Robotics and Electronics Engineering Bharati Robotic SystemsIndia Department of Robotics and Mechanical Engineering Bharati Robotic SystemsIndia

Climbing robots are being developed for various *** confined space requires a compact locomotion system with vertical and overhead climbing *** achieve surface transition,Steering geometry Interaction system and static force are *** ubiquitous infrastructure and excellent coverage,they can be used for providing location information for various location-based services,especially in indoor *** structure is designed for a magnetic wall-climbing robot to gradually decrease the magnetic force when it is transiting between perpendicular magnetic *** paper describes the design process of a magnetic wall climbing robot,which adopts SgI and has the potential to carry materials in a confined space with an energy efficient system *** resolve the problem of target tracking,it is essential to deploy a system *** the last two decades,several researchers have recommended many remote user authentication *** are continuously trying to enhance the security in material handling automation system by introducing several features into their work.A working prototype has been built based on the optimized dimension.

关键词： Climbing Robot Surface transition Wireless Sensor Networks(WSNs) Target Tracking Static Force Steering Geometry Interaction(SgI).

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Dynamic Insights of Developing Functional Nanomaterials for Clean Energy and Microelectronics

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Microscopy and Microanalysis 2024年第SUPPLEMENT_1期30卷

作者： Yang, Judith C Hwang, Sooyeon Camino, Fernando Chemical and Petroleum Engineering Department University of Pittsburgh Pittsburgh PA United States Physics and Astronomy Department University of Pittsburgh Pittsburgh PA United States Center for Functional Nanomaterials Brookhaven National Lab Upton NY United States Materials Science and Engineering Program & Department of Mechanical Engineering State University of New York at Binghamton Binghamton NY United States

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Lower-limb kinematics and kinetics during continuously varying human locomotion

arXiv

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arXiv 2021年

作者： Reznick, Emma Embry, Kyle R. Neuman, Ross Bolívar-Nieto, Edgar Fey, Nicholas P. Gregg, Robert D. University of Michigan Robotics Institute Ann ArborMI48109 United States University of Texas at Dallas Department of Mechanical Engineering RichardsonTX75080 United States Shirley Ryan AbilityLab Center for Bionic Medicine ChicagoIL60611 United States Department of Physical Medicine and Rehabilitation Northwestern University ChicagoIL60611 United States University of Texas at Austin Department of Mechanical Engineering AustinTX78712 United States University of Michigan Department of Electrical Engineering and Computer Science Ann ArborMI48109 United States

Human locomotion involves continuously variable activities including walking, running, and stair climbing over a range of speeds and inclinations as well as sit-stand, walk-run, and walk-stairs transitions. Understanding the kinematics and kinetics of the lower limbs during continuously varying locomotion is fundamental to developing robotic prostheses and exoskeletons that assist in community ambulation. However, available datasets on human locomotion neglect transitions between activities and/or continuous variations in speed and inclination during these activities. This data paper reports a new dataset that includes the lower-limb kinematics and kinetics of ten able-bodied participants walking at multiple inclines (± 0°, 5° and 10°) and speeds (0.8 m/s, 1 m/s and 1.2 m/s), running at multiple speeds (1.8 m/s, 2 m/s, 2.2 m/s and 2.4 m/s), walking and running with constant acceleration (± 0.2 m/s2 and 0.5 m/s2), and stair ascent/descent with multiple stair inclines (20°, 25°, 30° and 35°). This dataset also includes sit-stand transitions, walk-run transitions, and walk-stairs transitions. Data were recorded by a Vicon motion capture system and, for applicable tasks, a Bertec instrumented treadmill. © 2021, CC BY.

关键词： Stairs

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Cu@Nc as High-Performance and Durable Electrocatalyst for Oxygen Reduction Reaction in Alkaline Membrane Fuel Cells

SSRN

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SSRN 2022年

作者： Peera, Shaik Gouse Liu, Chao Asokan, Arunchander Suss, Matthew E. Department of Environmental Science Keimyung University 1095 Dalseo-gu Daegu42601 Korea Republic of Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and Technology Ganzhou341000 China Faculty of Mechanical Engineering Technion – Israel Institute of Technology Haifa320003 Israel Grand Technion Energy Program Technion – Israel Institute of Technology Haifa3200003 Israel Wolfson Department of Chemical Engineering Technion – Israel Institute of Technology Haifa3200003 Israel

Discovery of electrocatalysts composed of cheap transition metals are in urgent to replace the traditional Pt/C catalyst used for oxygen reduction reaction (ORR). Herein, we synthesized Cu nanoparticles encapsulated with nitrogen-doped carbon (Cu@NC) as an excellent and durable catalyst for ORR. A systematic evaluation of effect of Cu content, acid leaching and secondary heat treatment have been established with the help of half-cell studies. The morphological analysis revealed that Cu nanoparticles surrounded by a thick nitrogen doped carbon layers and further, the acid leaching and subsequent pyrolysis, boosted the electrocatalytic performance. The optimized Cu@NC catalyst showed onset potential and half-wave potential of 0.975 V vs. RHE (potential corresponding to a current density of 0.1 mA cm-2) and 0.85 V vs. RHE, surpassing Pt/C catalyst. In addition, the Cu@NC catalyst exhibited outstanding durability, tolerance to carbon monoxide and methanol molecules. In the alkaline fuel cell, Cu@NC catalyst delivered 118 mW cm-2 peak power density in alkaline fuel cell operated with H2-O2, whereas Pt/C only delivered a peak power density of 97 mW cm-2 under ambient operating conditions. High ORR activity and better stability of Cu@NC catalyst could be a potential alternative to Pt/C catalyst in alkaline fuel cells and metal-air cell cathodes. © 2022, The Authors. All rights reserved.

关键词： Electrolytic reduction

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Global Energy Spectrum of the General Oceanic Circulation

arXiv

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arXiv 2022年

作者： Storer, Benjamin A. Buzzicotti, Michele Khatri, Hemant Griffies, Stephen M. Aluie, Hussein Department of Mechanical Engineering Laboratory for Laser Energetics University of Rochester RochesterNY United States Department of Physics University of Rome Tor Vergata INFN Rome Italy Department of Earth Ocean and Ecological Sciences University of Liverpool United Kingdom NOAA Geophysical Fluid Dynamics Laboratory Princeton University Atmospheric and Oceanic Sciences Program PrincetonNJ United States

Since the advent of satellite altimetry, our perception of the oceanic circulation has brought into focus the pervasiveness of mesoscale eddies that have typical scales of tens to hundreds of kilometers [5], are the ocean’s analogue of weather systems, and are often thought of as the peak of the ocean’s kinetic energy (KE) wavenumber spectrum [7, 19, 23]. Yet, our understanding of the ocean’s spatial scales has been derived mostly from Fourier analysis in small "representative" regions (e.g. [16, 14, 4]), typically a few hundred kilometers in size, that cannot capture the vast dynamic range at planetary scales. Here, we present the first truly global wavenumber spectrum of the oceanic circulation from satellite data and high-resolution re-analysis data, using a coarse-graining method to analyze scales much larger than what had been possible before. Spectra spanning over three orders of magnitude in length-scale reveal the Antarctic Circumpolar Current (ACC) as the spectral peak of the global extra-tropical ocean, at ≈ 10 × 103 km. We also find a previously unobserved power-law scaling over scales larger than 103 km. A smaller spectral peak exists at ≈ 300 km associated with the mesoscales, which, due to their wider spread in wavenumber space, account for more than 50% of the resolved surface KE globally. Length-scales that are twice as large (up to 103 km) exhibit a characteristic lag time of ≈ 40 days in their seasonal cycle, such that in both hemispheres KE at 100 km peaks in late spring while KE at 103 km peaks in late summer. The spectrum presented here affords us a new window for understanding the multiscale general oceanic circulation within Earth’s climate system, including the largest planetary scales. © 2022, CC BY.

关键词： Kinetic energy

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