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Emerging Trends in Electrical, Electronic and Communications engineering (ELECOM), 2020 3rd International Conference on

作者： Nour Mohammad Murad Hongyu du Fayu Wan Vladimir Mordachev Eugene Sinkevich Xiaohe Chen Blaise ravelo PIMENT Network and Telecom Lab IUT University of La Réunion Saint Pierre France NUIST School of Electronic & Information Engineering Nanjing China R&D Laboratory of EMC Belarusian State University of Informatics and Radioelectronics Minsk Belarus China University of Petroleum College of Information Science and Engineering Beijing China

ISBN: (数字)9798331532475

ISBN: (纸本)9798331532482

due to the increase of communication channel, today, the wireless transceiver (Txrx) system suffers of signal distortion due to the active component nonlinearity. Therefore, experimental investigation was performed thanks to our research project on the test of microwave active component nonlinear (NL) characteristics. A Txrx test bench of microwave power amplifier (MP A) input and output performance measurement is presented. This test bench uses the A V3860C MPA with the output power of over 29 dBm operating in 0.8 GHz~20 GHz. The input level is limited to 10 dBm or $\pm 10$ V. The AV3860C MP A measurement setup includes signal generator (SG), MP A, attenuator and EMI receiver (rx). The measurement of losses is assessed with attenuator and coaxial line connections. The MP A nonlinear (NL) measurement is carried out by adjustment of the signal generator output power from −30 dBm to 10 dBm. The MPA NL characteristics are assessed from the MP A gain, P1dB compression point and efficiency by plotting the input-output. Then, as NL model, the memory input-output polynomial by means of least mean square fitting method of the A V3860C MP A is proposed by using the experimented data.

关键词： Wireless communication Analytical models Power amplifiers Microwave communication Predictive models Microwave theory and techniques Signal generators Polynomials Microwave amplifiers Power generation

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Microwave Amplifier OIP3 Characterization Test for Wireless Communication Transmitter

Microwave Amplifier OIP3 Characterization Test for Wireless ...

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Emerging Trends in Electrical, Electronic and Communications engineering (ELECOM), 2020 3rd International Conference on

作者： Hongyu du Nour Mohammad Murad Fayu Wan Vladimir Mordachev Eugene Sinkevich Xiaohe Chen Blaise ravelo NUIST School of Electronic & Information Engineering Nanjing China PIMENT Network and Telecom Lab IUT University of La Réunion Saint Pierre France R&D Laboratory of EMC Belarusian State University of Informatics and Radioelectronics Minsk Belarus China University of Petroleum College of Information Science and Engineering Beijing China

ISBN: (数字)9798331532475

ISBN: (纸本)9798331532482

despite the wireless communication system design and manufacturing progress, the radio frequency interference (rFI) undesirable effect due to the signal distortion remains an open challenge for the microwave research engineer. This paper is dedicated to the rFI characterization from third-order inter modulation distortion (IMd3) of power amplifier (P A) used in wireless communication transmitter (Tx) around 2.4 GHz. The third-order output intercept point (OIP3) is studied from harmonic double-frequency (dF) test method. After the recall on the IMd3 theory, the considered experimental setup is described. The P A A V3860C OIP3 is evaluated y adjusting the signal generator output power from −30 dBm to 10 dBm from dF NL measurements at 2.4 GHz and determined by least squares method fit b. As prospect of the present study, research work is currently ongoing for extending the rFI test technique for 6G communication system.

关键词： Wireless communication radio transmitters Power amplifiers Microwave communication distortion Signal generators Microwave amplifiers distortion measurement System analysis and design radiofrequency interference

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Auto-reduction of Au(III) on Fe-doped, Pyrrolic-N-Modified nanoporous carbon derived from ZIF-8 for the electrochemical immunosensing of CA-125

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Electrochimica Acta 2024年 498卷

作者： runprapan, Nattharika Yuwono, rio Akbar Wang, Fu-Ming Yuan, Chiou-Chung Wu, Nae-Lih ramar, Alagar Foeng, ruben Chang, Ching-Kai Hsu, Ping-Hsuan Lee, Jyh-Fu Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei Taiwan Sustainable Energy Center National Taiwan University of Science and Technology Taipei Taiwan Department of Chemical Engineering Chung Yuan Christian University Taoyuan Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Taoyuan Taiwan Department of Obstetrics and Gynecology Cheng Hsin General Hospital Taipei Taiwan Department of Chemical Engineering National Taiwan University Taipei Taiwan National Synchrotron Radiation Research Center Hsinchu Taiwan

Ovarian cancer (OC) is associated with high late mortality owing to hidden symptoms in the early stages and limited screening measurements. Therefore, it is urgent to develop a highly efficient label-free immunosensor for targeting cancer antigens. In this study, we developed a gold-loaded iron-doped nanoporous carbon (denoted as Au@Fe-NC) as an ideal substrate for cancer antigen detection with high specificity and sensitivity. First, an Fe, N-doped nanoporous carbon (Fe-NC) material was synthesized by carbonizing a Fe-doped metal-organic framework at 900 °C under continuous nitrogen flow. The resultant Fe-NC contains pyrrolic-N, which facilitates the auto-reduction of Au3+ to Au⁰ without requiring an external reducing agent. Thus, the Au@Fe-NC was spontaneously formed by mixing an aqueous HAuCl₄ solution with Fe-NC. The immunosensor developed using Au@Fe-NC exhibits outstanding stability as well as high sensitivity to carbohydrate antigen 125 (CA-125), a tumor marker, presenting a linear dynamic range of 0.1 pg mL−1 to 1 µg mL−1 and a detection limit of 0.1 pg mL−1. The proposed Au@Fe-NC-based immunosensor has the ability to detect CA-125 in human serum samples and is a promising material for OC diagnosis. © 2024

关键词： Immunosensors

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Gravitational Modulation of Filler distribution in Asymmetric Mixed Matrix membrane: Achieving High Loading in Skin Layer

SSRN

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SSrN 2024年

作者： Li, Ziheng Guo, Yuehu Yu, Jingbang ruan, Xuehua Jiang, Xiaobin dai, Yan Li, Tiantian Li, Xiangcun Zheng, Wenji He, Gaohong Liaoning Key Laboratory of Chemical Additive Synthesis and Separation Panjin Institute of Industrial Technology Dalian University of Technology Liaoning Panjin124221 China State Key Laboratory of Fine Chemicals R&D Center of Membrane Science and Technology School of Chemical Engineering Ocean and Life Sciences Dalian University of Technology Liaoning Dalian116023 China

The fillers in asymmetric mixed matrix membranes (AMMMs) by phase inversion tend to distribute across the membrane, but less in the skin layer, resulting in limited enhancement of gas separation performance. In this work, an external gravity field is proposed to induce polystyrene-acrylate (PSA) modified hollow ZIF-8 nanospheres (PHZ) to settle and accumulate in the skin layer by the density difference between ZIF-8 and the polymer solution, then through phase inversion, the gravity induced AMMMs (GAMMMs) with improved ZIF-8 loading in skin layer is constructed. This is confirmed by the EdS analysis of the membrane cross-sections that more PHZ settle and accumulate in the skin layer, which enhances the filler loading by 330% in comparison to the AMMMs without gravity sedimentation. Together with the hollow cavity of PHZ, the gas permeation can be improved greatly. Meanwhile, the PHZ can also guarantee the favorable interfacial compatibility by the hydrogen bonding interaction between the carboxyl groups in PSA with the PES polymer matrix, which is demonstrated by the slightly elevated Tg of GAMMMs over the ZIF-8/PES membrane. Consequently, the PHZ/PES GAMMMs can achieve high gas permeation while keeping sufficient selectivity at high filler loading in the skin layer. The PHZ-8d/PES GAMMM shows H2 permeance of 29.11 GPU and H2/CH4 of 83.04, which are 142.85% and 5.99% higher than those of ZIF-8/PES AMMM without gravity sedimentation, and exceeding the corresponding 2008 robeson upper bound. This proposed GAMMM shows a great potential in the large-scale MMMs based gas separation. © 2024, The Authors. All rights reserved.

关键词： Hydrogen bonds

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Preparation of citric acid-modified cellulose materials with superwetting and antibacterial characteristics for highly-efficient separation of oil/water mixtures, emulsions, and dye-containing wastewater

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Separation and Purification Technology 2024年第PartB期330卷

作者： Berako Belachew, Guyita Hu, Chien-Chieh Wang, Chih-Feng Liao, Mei-Yi Hung, Wei-Song Chen, Jem-Kun Lai, Juin-Yih Graduate Institute of Applied Science and Technology Advanced Membrane Materials Research Center National Taiwan University of Science and Technology Taipei106 Taiwan Institute of Advanced Semiconductor Packaging and Testing National Sun Yat-sen University Kaohsiung804 Taiwan Department of Applied Chemistry National Pingtung University Pingtung900 Taiwan Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei106 Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Taoyuan Chungli320 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan320 Taiwan

Oil/water separation has become a pressing global challenge in the recent times due to the rapid increase in the development of industries, frequent oil spills, and chemical leakages. Therefore, it is in great demand to develop superwetting materials from bio-based and cheap substances for treating oil/water mixtures and emulsions. Herein, we prepared citric acid (CA)-modified cellulose materials (including cotton fabric and raw cotton) with superwetting properties through a green dip-coating approach. The as-prepared CA-modified cellulose materials showed superamphiphilicity in air and superoleophobicity underwater. The CA-modified cotton fabric (CMCF) can be utilized to treat oil/water mixtures and demonstrated remarkably high permeation fluxes (up to 107,900 L m−2h−1) along with excellent separation efficiency (>99.99 %). The CA-modified raw cotton (CMrC) was applied for separating both surfactant-stabilized oil-in-water and surfactant-stabilized water-in-oil emulsions (SSOIWEs and SSWIOEs) exhibiting ultra-high permeation fluxes (up to 8,960 and 25,080 L m−2h−1, respectively) under gravity. The separation efficiencies of SSOIWEs surpassed 99.18 % and the filtrates’ oil purity for SSWIOEs exceeded 99.98 %. In addition, the CMrC could be used to treat dye aqueous solutions and dye-containing emulsions. Moreover, CMrC also exhibited good antibacterial properties. Because of their excellent oil/water mixtures and emulsions separation abilities, green preparation process, and ease of mass production, our CA-modified cellulose materials have notable potential for practical applications. © 2023 Elsevier B.V.

关键词： Citric acid

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Polyphthalonitrile as a novel precursor for carbon membranes: Tunable microstructure characteristics and gas permeation behavior

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Carbon 2024年 228卷

作者： Hu, Chun-Po Liang, Yen Nan Yang, Hong-Li Hung, Wei-Song Lim, Jacob Song Kiat He, Zeming Hu, Xiao Matthew Interdisciplinary Graduate Programme Graduate College Nanyang Technological University 637141 Singapore School of Materials Science and Engineering Nanyang Technological University 639798 Singapore Nanyang Technological University 637141 Singapore R&D Center for Membrane Technology Chung Yuan Christian University Chung-Li 32023 Taiwan Advanced Membrane Materials Research Center Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei10607 Taiwan Temasek Laboratories Nanyang Technological University 50 Nanyang Drive 637553 Singapore

Carbon molecular sieve (CMS) membranes hold great promise for energy-efficient gas separation, contributing to mitigating greenhouse gas emissions. Exploring new types of microstructurally tunable polymeric precursors is critical for understanding the evolution of carbon microstructure arrangement and adjusting the gas permeation behavior of CMS membranes. As a precursor for CMS membranes, polyphthalonitrile (PPN) resin with both tunable intermolecular distance and π-π stacking arrangement is reported for the first time. We have demonstrated that the aforementioned two key features of the thermally crosslinked PPN network are beneficial to forming PPN-CMS membranes with enlarged intermolecular distance and small-sized, narrow-distributed ultramicropores ( © 2024

关键词： Pore size

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Polyphthalonitrile-Based Novel Carbon Molecular Sieve membranes: Microstructure Characteristics and Gas Permeation Behavior

SSRN

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SSrN 2024年

作者： Hu, Chun-Po Liang, Yen Nan Yang, Hong-Li Wei-Song, Hung Lim, Jacob Song Kiat He, Zeming Hu, Xiao Matthew Interdisciplinary Graduate Programme Graduate College Nanyang Technological University 637141 Singapore School of Materials Science and Engineering Nanyang Technological University 639798 Singapore Nanyang Technological University 637141 Singapore R&D Center for Membrane Technology Chung Yuan Christian University Chung-Li32023 Taiwan Advanced Membrane Materials Research Center Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei10607 Taiwan Temasek Laboratories Nanyang Technological University 50 Nanyang Drive 637553 Singapore

Carbon molecular sieve (CMS) membranes hold great promise for energy-efficient gas separation, contributing to the mitigation of greenhouse gas emissions. Exploring new types of microstructurally tunable polymeric precursors is critical for adjusting the microstructure characteristics and gas separation performance of CMS membranes. In this study, novel CMS membranes derived from a crosslinkable polyphthalonitrile (PPN) precursor with a thermally tunable microstructure arrangement are reported. We demonstrate that the aforementioned two key features of PPN can be utilized to adjust microstructure characteristics that determine the gas permeation behavior of the PPN-CMS membranes through a controlled thermal treatment protocol. The thermally induced enlargement of the average intermolecular distance of the PPN network and the ordered π-π stacking arrangement are beneficial to the formation of a narrow pore size distribution in the PPN-CMS membrane, particularly in the ultramicropore ( © 2024, The Authors. All rights reserved.

关键词： Microstructure

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A Novel Federated Learning-Based IdS for Enhancing UAVs Privacy and Security

arXiv

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arXiv 2023年

作者： Ceviz, Ozlem Sadioglu, Pinar Sen, Sevil Vassilakis, Vassilios G. The WISE Lab. Deparment of Computer Engineering Hacettepe University Ankara Turkey The R&D Assistant Specialist Turk Telekom Ankara Turkey Department of Computer Science University of York York United Kingdom

Unmanned aerial vehicles (UAVs) operating within Flying Ad-hoc Networks (FANETs) encounter security challenges due to the dynamic and distributed nature of these networks. Previous studies predominantly focused on centralized intrusion detection, assuming a central entity responsible for storing and analyzing data from all devices. However, these approaches face challenges including computation and storage costs, along with a single point of failure risk, threatening data privacy and availability. The widespread dispersion of data across interconnected devices underscores the necessity for decentralized approaches. This paper introduces the Federated Learning-based Intrusion detection System (FL-IdS), addressing challenges encountered by centralized systems in FANETs. FL-IdS reduces computation and storage costs for both clients and the central server, crucial for resource-constrained UAVs. Operating in a decentralized manner, FL-IdS enables UAVs to collaboratively train a global intrusion detection model without sharing raw data, thus avoiding the delay in decisions based on collected data, as is often the case with traditional methods. Experimental results demonstrate FL-IdS's competitive performance with Central IdS (C-IdS) while mitigating privacy concerns, with the Bias Towards Specific Clients (BTSC) method further enhancing FL-IdS performance even at lower attacker ratios. Comparative analysis with traditional intrusion detection methods, including Local IdS (LIdS), sheds light on FL-IdS's strengths. This study significantly contributes to UAV security by introducing a privacy-aware, decentralized intrusion detection approach tailored to UAV networks. Moreover, by introducing a realistic dataset for FANETs and federated learning, our approach differs from others lacking high dynamism and 3d node movements or accurate federated data federations. Copyright © 2023, The Authors. All rights reserved.

关键词： Intrusion detection

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development of a High Sensitive label-Free Electrochemical Immunosensor Using Aunps@Zif-8@F-Mwcnts Nanocomposites for Ovarian Cancer diagnosis Via Ca-125 detection

SSRN

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SSrN 2024年

作者： runprapan, Nattharika Wang, Fu-Ming Yuan, Chiou-Chung Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei Taiwan Sustainable Energy Center National Taiwan University of Science and Technology Taipei Taiwan Department of Chemical Engineering Chung Yuan Christian University Taoyuan Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Taoyuan Taiwan Department of Obstetrics and Gynecology Cheng Hsin General Hospital Taipei Taiwan

Early diagnosis of ovarian cancer (OC) is critical for effective treatment and improved patient outcomes. This study presents a novel label-free electrochemical immunosensor, a biomarker associated with OC, for high-sensitivity detection of CA-125. Our approach involves a unique immobilization strategy utilizing nanocomposites of gold nanoparticles/zeolitic imidazolate framework-8/carboxylic acid-functionalized multi-walled carbon nanotubes (AuNPs@ZIF-8@f-MWCNTs). This results in ingenuity, which facilitates the direct measurement of antibody (Ab) capture with antigen (Ag), simplifying the biosensor fabrication process and eliminating the need for extra Ab, thus reducing the need for a laboratory. The synergistic effect of AuNPs, ZIF-8, and f-MWCNTs within the nanocomposites enhances stability, electrical conductivity, and electrochemical signal while providing a large surface area with numerous binding sites for increased Ab loading. Experimental results demonstrate the label-free immunosensor’s wide linear detection range (10 to 10−6 µg/mL) and impressive sensitivity, with a lower detection limit (LOd) of 1 pg/mL. Notably, our proposed immunosensor shows promise for detecting CA-125 in human serum samples, underscoring its potential for early OC diagnosis—a crucial advancement in healthcare. © 2024, The Authors. All rights reserved.

关键词： Gold nanoparticles

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Carbon nitride- and graphene-based materials for the photocatalytic degradation of emerging water pollutants

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Materials Advances 2024年第7期5卷 2668-2688页

作者： Indra Jaya Budiarso Valentinus Alphano dabur riska rachmantyo Hermawan Judawisastra Chechia Hu Arie Wibowo Master Program in Materials Science and Engineering Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Ganesha 10 Bandung 40132 West Java Indonesia Doctoral Program in Materials Science and Engineering Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Ganesha 10 Bandung 40132 West Java Indonesia Materials Science and Engineering Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Ganesha 10 Bandung 40132 West Java Indonesia ariewibowo@itb.ac.id Department of Chemical Engineering National Taiwan University of Science and Technology Taipei 106 Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Taoyuan 320 Taiwan Research Center for Nanoscience and Nanotechnology Institut Teknolgi Bandung Ganesha 10 Bandung 40132 West Java Indonesia

Photocatalytic degradation is a promising way to treat emerging pollutants in wastewater. recently, metal-free photocatalysts such as carbon nitride- and graphene-based materials have attracted much interest in the photocatalytic degradation of emerging water pollutants owing to their visible light activity and unique electrical properties, respectively. Graphitic carbon nitride (GCN) is considered a superior visible light–active photocatalyst because of its suitable bandgap (2.7 eV). Moreover, the facile synthesis process and the high chemical and thermal stability of GCN make it one of the research hotspots in photocatalytic wastewater treatment. Besides GCN, graphene and its derivatives are utilized to support main photocatalysts by enhancing their light absorption, pollutant adsorption, and photogenerated charge separation. Furthermore, the vast modification of these materials has promoted various outstanding performances in carbon nitride- and graphene-based photocatalysts in the application of pollutant degradation. In this review, we highlight recent developments in carbon nitride- and graphene-based photocatalysts (2018–2023), focusing on the strategies to improve the activity of GCN as a visible light–active photocatalyst and the role of graphene and its derivatives as supporting materials in wastewater pollutant remediation applications.

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