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Layer Contour Verification in Additive Manufacturing by Means of Commercial Flatbed Scanners
Sensors - Tập 20 Số 1 - Trang 1
David Blanco, Pedro Fernández, Á. Noriega, Braulio José Álvarez Álvarez, G. Valiño
Industrial adoption of additive manufacturing (AM) processes demands improvement in the geometrical accuracy of manufactured parts. One key achievement would be to ensure that manufactured layer contours match the correspondent theoretical profiles, which would require integration of on-machine measurement devices capable of digitizing individual layers. Flatbed scanners should be consider...... hiện toàn bộ
Filament Breakage Monitoring in Fused Deposition Modeling Using Acoustic Emission Technique
Sensors - Tập 18 Số 3 - Trang 749
Zhensheng Yang, Jin Li, Youruiling Yan, Mei Yiming
Polymers are being used in a wide range of Additive Manufacturing (AM) applications and have been shown to have tremendous potential for producing complex, individually customized parts. In order to improve part quality, it is essential to identify and monitor the process malfunctions of polymer-based AM. The present work endeavored to develop an alternative method for filament breakage id...... hiện toàn bộ
A Lossless Multichannel Bio-Signal Compression Based on Low-Complexity Joint Coding Scheme for Portable Medical Devices
Sensors - Tập 14 Số 9 - Trang 17516-17529
Dong–Sun Kim, Jung Ah Kwon
Research on real-time health systems have received great attention during recent years and the needs of high-quality personal multichannel medical signal compression for personal medical product applications are increasing. The international MPEG-4 audio lossless coding (ALS) standard supports a joint channel-coding scheme for improving compression performance of multichannel signals and i...... hiện toàn bộ
Indirect Determination of Mercury Ion by Inhibition of a Glucose Biosensor Based on ZnO Nanorods
Sensors - Tập 12 Số 11 - Trang 15063-15077
Chan Oeurn Chey, Zafar Hussain Ibupoto, K. Khun, Omer Nur, M. Willander
A potentiometric glucose biosensor based on immobilization of glucose oxidase (GOD) on ZnO nanorods (ZnO-NRs) has been developed for the indirect determination of environmental mercury ions. The ZnO-NRs were grown on a gold coated glass substrate by using the low temperature aqueous chemical growth (ACG) approach. Glucose oxidase in conjunction with a chitosan membrane and a glutaraldehyde...... hiện toàn bộ
Accurate Sybil Attack Detection Based on Fine-Grained Physical Channel Information
Sensors - Tập 18 Số 3 - Trang 878
Chundong Wang, Likun Zhu, Lanqi Yang, Zhentang Zhao, Lei Yang, Zheli Liu, Xiaochun Cheng
With the development of the Internet-of-Things (IoT), wireless network security has more and more attention paid to it. The Sybil attack is one of the famous wireless attacks that can forge wireless devices to steal information from clients. These forged devices may constantly attack target access points to crush the wireless network. In this paper, we propose a novel Sybil attack detectio...... hiện toàn bộ
Optical Microcavity: Sensing down to Single Molecules and Atoms
Sensors - Tập 11 Số 2 - Trang 1972-1991
Tomoyuki Yoshie, Lingling Tang, Shu-Yu Su
This review article discusses fundamentals of dielectric, low-loss, optical micro-resonator sensing, including figures of merit and a variety of microcavity designs, and future perspectives in microcavity-based optical sensing. Resonance frequency and quality (Q) factor are altered as a means of detecting a small system perturbation, resulting in realization of optical sensing of a small a...... hiện toàn bộ
A Comparative Study of Time Series Anomaly Detection Models for Industrial Control Systems
Sensors - Tập 23 Số 3 - Trang 1310
Bedeuro Kim, Mohsen Ali Alawami, Eun‐Soo Kim, Sanghak Oh, Jeongyong Park, Hyoungshick Kim
Anomaly detection has been known as an effective technique to detect faults or cyber-attacks in industrial control systems (ICS). Therefore, many anomaly detection models have been proposed for ICS. However, most models have been implemented and evaluated under specific circumstances, which leads to confusion about choosing the best model in a real-world situation. In other words, there st...... hiện toàn bộ
Label-Free Electrochemical Detection of the Specific Oligonucleotide Sequence of Dengue Virus Type 1 on Pencil Graphite Electrodes
Sensors - Tập 11 Số 6 - Trang 5616-5629
Elaine Virgínia Martins de Souza Figueiredo, Gustavo Nascimento, Nataly Santana, Danielly S. Campos-Ferreira, Manoel J.A. Lima, Edna Natividade, Danyelly Bruneska Gondim Martins, José Ronaldo Lima de Carvalho
A biosensor that relies on the adsorption immobilization of the 18-mer single-stranded nucleic acid related to dengue virus gene 1 on activated pencil graphite was developed. Hybridization between the probe and its complementary oligonucleotides (the target) was investigated by monitoring guanine oxidation by differential pulse voltammetry (DPV). The pencil graphite electrode was made of o...... hiện toàn bộ
Rapid SARS-CoV-2 Detection Using Electrochemical Immunosensor
Sensors - Tập 21 Số 2 - Trang 390
Biljana Mojsoska, Sylvester Larsen, Dorte Aalund Olsen, Jonna Skov Madsen, Ivan Brandslund, Fatima AlZahra’a Alatraktchi
The outbreak of the coronavirus disease (COVID-19) pandemic caused by the novel coronavirus (SARS-CoV-2) has been declared an international public health crisis. It is essential to develop diagnostic tests that can quickly identify infected individuals to limit the spread of the virus and assign treatment options. Herein, we report a proof-of-concept label-free electrochemical immunoassay ...... hiện toàn bộ
Novelty Detection Classifiers in Weed Mapping: Silybum marianum Detection on UAV Multispectral Images
Sensors - Tập 17 Số 9 - Trang 2007
Thomas Alexandridis, Afroditi Alexandra Tamouridou, Xanthoula Eirini Pantazi, Anastasia L. Lagopodi, J. Kashefi, Georgios Ovakoglou, Vassilios Polychronos, Dimitrios Moshou
In the present study, the detection and mapping of Silybum marianum (L.) Gaertn. weed using novelty detection classifiers is reported. A multispectral camera (green-red-NIR) on board a fixed wing unmanned aerial vehicle (UAV) was employed for obtaining high-resolution images. Four novelty detection classifiers were used to identify S. marianum between other vegetation in a field. The class...... hiện toàn bộ
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