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7th IEEE Palestinian International Conference on Electrical and Computer engineering, PICECE 2019

作者： Khozondar, Hala Jarallah El Zainuddin, Siti Zafarh Bte Koch, Alexander W. Electrical Engineering Department Islamic University of Gaza P.O.Box 108 Gaza Palestine Institute for Measurement Systems and Sensor Technology German Institute for Science and Technology GIST-TUM Asia Singapore Singapore Institute for Measurement Systems and Sensor Technology Technische Universitaet Muenchen TUM MuenchenD-80333 Germany

ISBN: (纸本)9781538662915

This work describes a modelling and simulation of the switching mechanism of an off-grid hybrid power system. An offgrid system means that it is not connected to an electricity grid or network. An off-grid power system is important especially at catastrophe times and war where it is hard to get electricity from a utility grid. In addition to that, owners of residential and small-scale commercial structures which are located in remote areas will be able to have access to the electricity. The switching mechanism depends on the renewable energy amount. An off-grid hybrid power system utilizes an array of deep-cycle batteries to store the power generated by the solar panels and a wind turbine. When the renewable sources have excess energy, it is stored in the battery. However, If the renewable sources do not supply enough energy to the loads, the switching mechanism will let the battery provide the load with the required energy. The simulation results in this work show the advantages of using the off-grid system to produce electricity or power from one or more source of renewable energy. © 2019 IEEE.

关键词： Electric power transmission networks

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On the development and qualification of multiaxial designs of nanofabrication machines with ultra precision tool rotations 19

On the development and qualification of multiaxial designs o...

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19th International Conference of the European Society for Precision engineering and Nanotechnology, EUSPEN 2019

作者： Schienbein, Ralf Fern, Florian Theska, René Füßl, Roland Institute of Design and Precision Engineering Precision Engineering Group Department of Mechanical Engineering Technische Universität Ilmenau Germany Institute of Process Measurement and Sensor Technology Department of Mechanical Engineering Technische Universität Ilmenau Germany

ISBN: (纸本)9780995775145

The majority of nanopositioning and nanomeasuring machines (NPMMs) are based on three independent linear movements in a Cartesian coordinate system with a repeatability in the nanometer range. This in combination with the specific nature of sensors and tools limits the addressable part geometries. This article contributes to the enhancement of multiaxial machine structures by the implementation of rotational movements while keeping the precision untouched. A parameter based dynamic evaluation system with quantifiable technological parameters has been set up and employed to identify general solution concepts and adequate substructures. It further on contains data based on comprehensive design catalogues, uncertainty calculations and CAD-model based footprint analysis for specific setups. First evaluations show high potential for sample scanning mode variants considering linear movements of the object in combination with angular movements of the tool, considering a goniometer setup in specific. Based on this, positioning systems for the tool rotation of a NPMM were selected and the positioning properties of different arrangements were determined in test series using autocollimators. General properties of the influence of the arrangement were derived. The arrangement of the substructures which fulfils the previous given requirements is integrated into the NPMM and investigated for long-term stability using a retroreflector as a tool and various laser interferometers. The influence of the additional positioning systems on the existing structure of NPMMs are investigated and solutions for the optimization of the overall system with regard to reproducibility and long-term stability are developed. For this purpose, comprehensive FEA simulations are carried out and structural adjustments are derived via topology optimizations. After all, the knowledge gained is formed into general rules for the verification and optimization of design solutions for multiaxial nanopositioning

关键词： Nanotechnology

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Correction: Fundamental Investigations in the Design of Five-Axis Nanopositioning Machines for measurement and Fabrication Purposes

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Nanomanufacturing and Metrology 2022年第4期5卷 437-437页

作者： Schienbein, Ralf Fern, Florian Theska, René Supreeti, Shraddha Füßl, Roland Manske, Eberhard Department of Mechanical Engineering Institute of Design and Precision Engineering Technical University of Ilmenau Ilmenau Germany Department of Mechanical Engineering Institute of Process Measurement and Sensor Technology Technical University of Ilmenau Ilmenau Germany Electronics Technology Group Department of Electrical Engineering and Information Technology Technical University of Ilmenau Ilmenau Germany

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Surface Electrical Impedance Myography measurements for Recognition of Numbers in American Sign Language

Surface Electrical Impedance Myography Measurements for Reco...

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IEEE International Conference on Computational Intelligence and Virtual Environments for measurement Systems and Applications

作者： Rim Barioul Ayat AlQudah Bilel Ben Atitallah Dhouha Bouchaala Olfa Kanoun Professorship of Measurement and Sensor Technology Technische Universität Chemnitz Chemnitz Germany Biomedical Engineering Department Jordan University of Science and Technology Irbid Jordan Digital Research Centre of Sfax Sfax Tunisia

ISBN: (数字)9781728144337

ISBN: (纸本)9781728144344

Surface Electrical Impedance Myograghy (sEIM) is one of the newest methods to study muscle contraction state. Essentially sEIM consists of the application of a low intensity sinusoidal electrical current, injected into the body at a set of frequencies in which the impedance of muscle is calculated based on the measured resulting voltage. This impedance is estimated to presents relevant data for hand gesture recognition. In this paper, the change of surface electrical impedance in the forearm muscle was collected during performing gestures representing the American Sign Language numbers. The measurements were carried out on the flexor muscle on the right forearm (dominant hand) on a group of 10 healthy subjects of the same age approximately. A four-pole method was considered with an inter-electrodes distance of 6 cm and a current injected amplitude equal to 0.1 mA in the frequency range between 1 kHz and 1 MHz. In order to reach high accuracy, features inspired by the medical use of sEIM for cancer and neuromuscular diseases diagnosis are extracted from the collected measurements in the first step followed by the implementation of an extreme learning machine (ELM) classifier. A five fold cross validation was applied in the training phase of the model and a prediction accuracy of 70,17% was noted during the testing phase.

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Learned end-to-end high-resolution lensless fiber imaging toward intraoperative real-time cancer diagnosis

arXiv

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arXiv 2022年

作者： Wu, Jiachen Wang, Tijue Uckermann, Ortrud Galli, Roberta Schackert, Gabriele Cao, Liangcai Czarske, Jürgen Kuschmierz, Robert Laboratory of Measurement and Sensor System Technique TU Dresden Helmholtzstrasse 18 Dresden01069 Germany State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision Instruments Tsinghua University Beijing100084 China Department of Neurosurgery University Hospital Carl Gustav Carus TU Dresden Dresden Germany Division of Medical Biology Department of Psychiatry Faculty of Medicine University Hospital Carl Gustav Carus TU Dresden Germany Department of Medical Physics and Biomedical Engineering Faculty of Medicine Carl Gustav Carus TU Dresden Germany Competence Center BIOLAS TU Dresden Dresden Germany Excellence Cluster Physics of Life TU Dresden Dresden Germany Faculty of Physics School of Science TU Dresden Dresden Germany

Endomicroscopy is indispensable for minimally invasive diagnostics in clinical practice. For optical keyhole monitoring of surgical interventions, high-resolution fiber endoscopic imaging is considered to be very promising, especially in combination with label-free imaging techniques to realize in vivo diagnosis. However, the inherent honeycomb-artifacts of coherent fiber bundles (CFB) reduce the resolution and limit the clinical applications. We propose an end-to-end lensless fiber imaging scheme toward intraoperative real-time cancer diagnosis. The framework includes resolution enhancement and classification networks that use single-shot fiber bundle images to provide both high-resolution images and tumor diagnosis result. The well-trained resolution enhancement network not only recovers high-resolution features beyond the physical limitations of CFB, but also helps improving tumor recognition rate. Especially for glioblastoma, the resolution enhancement network helps increasing the classification accuracy from 90.8% to 95.6%. The novel technique can enable histological real-time imaging through lensless fiber endoscopy and is promising for rapid and minimal-invasive intraoperative diagnosis in clinics. Copyright © 2022, The Authors. All rights reserved.

关键词： Fibers

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Noninvasive electrochemical biosensor for rapid detection of Helicobacter pylori in patient saliva

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sensors and Actuators B: Chemical 2025年 442卷

作者： Stella Schuster da Silva Tatiana Lima Valério Bruna M. Hryniewicz Hussamaldeen Jaradat Mel De Souza Wendhausen Araújo Carla Adriane Royer Beatriz Borba Ortiz Andrei Elias Deller Leandro Yoshimi Kashiwagui Paulo de Souza Fonseca Guimarães Jaqueline de Carvalho Oliveira Daniela Fiori Gradia Olfa Kanoun Carolina Camargo de Oliveira Marcio Vidotti Laboratory of Inflammatory and Neoplastic Cells Cell Biology Department Section of Biological Sciences – Federal University of Paraná (UFPR) Curitiba PR 81531-980 Brazil Grupo de Pesquisa em Macromoléculas e Interfaces Federal University of Paraná (UFPR) Curitiba PR 81531-980 Brazil Institute of Chemistry University of Campinas - UNICAMP Campinas 13083-970 Brazil Professorship of Measurement and Sensor Technology Faculty of Electrical Engineering and Information Technology Chemnitz University of Technology Chemnitz 09126 Germany Laboratory of Human Cytogenetics and Oncogenetics Postgraduate Program in Genetics Department of Genetics Federal University of Paraná Curitiba 81531-980 Brazil Cajuru University Hospital Pontifícia Universidade Católica do Paraná Curitiba PR 80050-350 Brazil

The carcinogenic bacterium Helicobacter pylori infect over half the global population, with a higher prevalence in low-income countries. It is linked to diseases such as chronic gastritis, peptic ulcers, and gastric cancer, a leading cause of cancer-related deaths worldwide. The gold standard diagnostic method involves histopathological evaluation of gastric biopsy tissue via upper gastrointestinal endoscopy—an invasive, complex, and time-intensive procedure requiring specialized professionals. This study presents a noninvasive alternative: an impedimetric electrochemical biosensor for H. pylori antigen detection in saliva. The biosensor was developed using a screen-printed carbon electrode modified with polypyrrole nanotubes and carboxylated multi-walled carbon nanotubes. Monoclonal antibodies targeting CagA, a cytotoxic effector protein of H. pylori , were immobilized on carbon nanotubes using EDC/NHS chemistry. The platform was characterized via scanning electron microscopy and electrochemical techniques. Electrochemical impedance spectroscopy (EIS) was employed for analyte detection, with an analytical curve constructed in phosphate-buffered saline (PBS) spiked with CagA protein. The biosensor demonstrated a linear detection range of 0.5 pg mL⁻¹ to 3.3 ng mL⁻¹ and a detection limit of 109.9 fg mL⁻¹ . Validation with patient saliva samples, confirmed by histopathology and rapid urease testing, yielded 97 % accuracy, 80 % sensitivity, and 100 % specificity. Results were obtained within 15 min. This EIS-based biosensor offers a sensitive, innovative, and noninvasive platform for early H. pylori diagnosis, which is essential for preventing severe diseases such as gastric cancer.

关键词： Helicobacter pylori Electrochemical biosensor Polypyrrole Nanotechnology Biomedical engineering

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Generating ideal reference geometry for cutting edges 22

Generating ideal reference geometry for cutting edges

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22nd World Congress of the International measurement Confederation, IMEKO 2018

作者： Karatas, Abdullah Seewig, Jörg University of Kaiserslautern Department of Mechanical and Process Engineering Institute for Measurement and Sensor-Technology Gottlieb-Daimler-Str. KaiserslauternD-67663 Germany

In the last years, many different techniques for rating cutting edges were presented. Nevertheless an automatic measurement and indication of quality from cutting edges was covered less attention. Although the state of cutting edges is very important in many cases during the manufacturing process. An automatic indication of quality can roughly be realised in three steps. The step, generating an ideal reference geometry from measured data, will be discussed in this paper. Therefore different types of splines and a robust filtering method is used. The other two steps, mainly measuring and estimating quantification parameters, were discussed in diverse sources. © 2018 Institute of Physics Publishing. All rights reserved.

关键词： Geometry

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The implementation of ultra precision rotations to multiaxial nanofabrication machines: Challenges and solution concepts 18

The implementation of ultra precision rotations to multiaxia...

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18th International Conference of the European Society for Precision engineering and Nanotechnology, EUSPEN 2018

作者： Schienbein, Ralf Weigert, Florian Fern, Florian Theska, René Füßl, Roland Precision Engineering Group Department of Mechanical Engineering Technische Universität Ilmenau Germany Institute of Process Measurement and Sensor Technology Department of Mechanical Engineering Technische Universität Ilmenau Germany

ISBN: (纸本)9780995775121

Existing long-range nanopositioning and nanomeasuring machines are based on three independent linear movements in a Cartesian coordinate system. This in combination with the specific nature of sensors and tools (further on summarized as tool) limits the addressable part geometries. This article contributes to the enhancement of multiaxial machine structures by the implementation of rotational movements while keeping the precision untouched. A parameter based dynamic evaluation system with quantifiable technological parameters has been set up and employed to identify general solution concepts and adequate substructures. First evaluations show high potential for sample scanning mode variants considering linear movements of the object in combination with angular movements of the tool, considering a goniometer setup in specific. The evaluation system is further enhanced by the implementation of data based on comprehensive design catalogues, uncertainty calculations and CAD-model based footprint analysis for specific setups. To support the selection, detailed parameter sets are generated containing explicit moving ranges, uncertainties, resolutions, reproducibilities and costs. This approach is also applied to the rotation of the object. The results are compared to the tool rotation and mixed versions. After all, the knowledge gained, is formed into general rules for the verification and optimization of design solutions for multiaxial nanopositioning machines. © 2018 CURRAN-CONFERENCE. All rights reserved.

关键词： Nanotechnology

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Front Cover: Photochemistry at Scale: Wireless Light Emitters Drive Sustainability in Process Research & Development (Eur. J. Org. Chem. 5/2022)

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European Journal of Organic Chemistry 2022年第5期2022卷

作者： Dr. Bastien O. Burek Hong Thu Duong Dr. Klaus Hochradel Prof. Dr. Alexander Sutor Dr. Matthias Rupp Dr. Eike K. Heilmann Dr. Kai Lovis Dr. Jonathan Z. Bloh Chemical Technology DECHEMA-Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany Department Institute of Measurement and Sensor Technology UMIT - University for Health Sciences Medical Informatics and Technology GmbH Eduard-Wallnöfer-Zentrum 1 16060 Hall in Tirol Austria Bayer AG Engineering & Technology 51368 Leverkusen Germany Bayer AG Research & Development Crop Science 40789 Monheim Germany Bayer AG Research & Development Pharmaceuticals 42096 Wuppertal Germany

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Ultra precise motion error measurement of rotation kinematics for the integration in nanomeasuring and nanofabrication machines 33

Ultra precise motion error measurement of rotation kinematic...

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33rd Annual Meeting of the American Society for Precision engineering, ASPE 2018

作者： Fern, Florian Füßl, Roland Schienbein, Ralf Theska, René Institute of Process Measurement and Sensor Technology Technische Universität Ilmenau Ilmenau Germany Department of Precision Engineering Technische Universität Ilmenau Ilmenau Germany

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