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Graphene-and Multi-Walled Carbon Nanotubes-Coated Tapered Plastic Optical Fiber for Detection of Lard Adulteration in Olive Oil

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Photonic Sensors 2022年第4期12卷 1-10页

作者： Ika PUSPITA Ninik IRAWATI Kartika Anoraga MADURANI Fredy KURNIAWAN Sekartedjo KOENTJORO Agus Muhamad HATTA Department of Engineering Physics Faculty of Industrial Technology and System EngineeringInstitut Teknologi Sepuluh NopemberSurabaya 60111Indonesia Department of Physics National Taiwan UniversityTaipei 10617China Department of Chemistry Faculty of Science and Data AnalyticsInstitut Teknologi Sepuluh NopemberSurabaya 60111Indonesia

A rapid and high-performance sensor for lard adulterant in edible oil was developed using the tapered plastic optical fiber(POF)coated with graphene and multi-walled carbon *** coating material was deposited onto a tapered POF with a taper waist diameter and a taper length of 0.45 mm and 1 cm,*** addition of the coating material was used to increase the sensitivity and selectivity coefficient of the tapered POF toward the lard *** sensing mechanism is based on a simultaneous interaction of lard substance and an evanescent wave of tapered POF with the coating *** results showed that graphene coating on the tapered POF increased the selectivity coefficient of the tapered POF towards lard substance from 33.54 to 324.19,and it gave a sensitivity of 0.427 dBm/%.In comparison,multi-walled carbon nanotubes coating increased the selectivity coefficient to 71.65 and increased its sensitivity to 1.189 dBm/%.Thus,the proposed configuration of the tapered POF with the coating material offered a simple configuration for a rapid,high sensitivity and selectivity detection of lard adulterant in edible oils.

关键词： Lard adulteration tapered optical fiber sensor graphene carbon nanotubes food safety

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Development of a Wireless Distributed Real-Time Angklung Robot system 8

Development of a Wireless Distributed Real-Time Angklung Rob...

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8th International Conference on Instrumentation, Control, and Automation, ICA 2023

作者： Wardana, Raisal Pradipta Budi, Eko Mursito Sudarsono, Anugrah Sabdono Bandung Institute of Technology Faculty of Industrial Technology Engineering Physics Department Bandung Indonesia Bandung Institute of Technology Engineering Physics Research Group Faculty of Industrial Technology Bandung Indonesia

ISBN: (纸本)9798350301274

This research discusses the development of Klungbot WDR, a wireless distributed real-time angklung robot system, leveraging the capabilities of ESP32 microcontrollers. The system employs an easily scalable architecture of a main device and multiple sub-devices, each controlling a set of angklungs. Real Time Operating system (RTOS) is used to ensure a timely execution of time-critical tasks. The wireless communication between these devices is facilitated using the ESP-NOW protocol. An investigation into the latency difference of ESP-NOW registered peers broadcast versus channel-wide broadcast revealed a significant delay between each subsequent peer in a registered peers broadcast compared to the consistent latency in a channel-wide broadcast. Confirming that channel-wide broadcast is the preferred way to do a one-to-many ESP-NOW communication in this particular application. The system managed to achieve a 1.63ms communication latency and 56.63ms action-sound latency. Indicating that the electromechanical system is the primary contributor to overall action-sound latency. This research provides valuable insights into the design and operation of real-time wireless communication systems for automated musical instruments. © 2023 IEEE.

关键词： Real time control

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Minced Meat Classification using Digital Imaging system Coupled with Machine Learning

Minced Meat Classification using Digital Imaging System Coup...

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2023 International Conference on Advanced Mechatronics, Intelligent Manufacture and industrial Automation, ICAMIMIA 2023

作者： Stendafity, Selfi Hatta, Agus M. Setiadi, Iwan C. Sekartedjo Rahmadiansah, Andi Photonics Engineering Laboratory Department of Engineering Physics Faculty of Industrial Technology and Systems Engineering Surabaya Indonesia

ISBN: (纸本)9798350309225

Meat is widely recognized as a prevalent dietary choice due to its intricate nutritional profile, and its production constitutes a significant component of the global cattle industry. Due to the significant market demand for meat and the pursuit of maximizing profitability, meat products are often adulterated with additional ingredients. A diverse amount of meat can be effectively detected by the comparison model of machine learning. This study provides a comprehensive analysis of the performance of low-cost imaging for classifying minced meat product. In this study, a variety of raw minced meat, including beef, lamb, and pork, was utilized. We investigated the feasibility of low-cost imaging system coupled with machine learning classifier such as Decision Tree, Random Forest, K-Nearest Neighbors (KNN), Support Vector Machine (SVM), Logistic Regression, and AdaBoost Classifier. The findings indicate that the K-nearest neighbors (KNN) model exhibits superior performance, with an overall classification accuracy of 98.2%. The K-Nearest Neighbors (KNN) model exhibits a notable level of precision and accuracy across all classes. Therefore, this study confirms that machine learning algorithm provide robust features for classifying minced meat from the image data. © 2023 IEEE.

关键词： Nearest neighbor search

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Developing a Person-Organization Fit Method for Candidate or Employees Placement 5

Developing a Person-Organization Fit Method for Candidate or...

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5th International Conference on Advancement in Data Science, E-Learning and Information systems, ICADEIS 2023

作者： Arifin, Farah Fitriavida Suakanto, Sinung Siswanto, Joko Putri, Alifiah Darmawan, Irfan Telkom University Faculty of Industrial Engineering Department of Information System Bandung Indonesia Faculty of Industrial Technology Industrial Engineering Research Group Bandung of Institute Technology Bandung Indonesia

ISBN: (纸本)9798350303414

Building a high-quality company necessitates optimizing human resources aligned with organizational goals. However, this study face challenges related to human resource management due to a lack of standardized evaluation procedures. To address this issue, a method was devised to assist the Human Resource department in effectively placing prospective employees or current staff. This research analyzes and designs a method that quantitatively measures employee competencies in relation to job requirements, employing the person-organization fit approach. The research findings demonstrate that the method's accuracy is deemed appropriate and reasonable. Consequently, it can be concluded that this method effectively facilitates the placement of prospective employees or current staff. Future research endeavors can expand upon this method by exploring its applicability in other organizations or companies utilizing the person-organization fit approach. Furthermore, the method can be further enhanced by incorporating more accurate and advanced concepts, such as descriptive statistics or machine learning algorithms. Accuracy results show that 86% of employees acknowledge a fit between themselves and the organization, while 14% of employees acknowledge a mismatch between themselves and the organization. The results and recommendations presented can guide organizations in optimizing their human resources, enhancing employee performance, and achieving organizational success. © 2023 IEEE.

关键词： Human resource management

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Assessments of Mean Reflectance Surface Exitance and Contrast in a Museum: Comparison Between Simulation, Calculation and Field Measurements 4

Assessments of Mean Reflectance Surface Exitance and Contras...

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4th engineering physics International Conference 2023, EPIC 2023

作者： Nurhuda, T. Monty, A.Z. Apriani, S. Mangkuto, R.A. Engineering Physics Department Faculty of Industrial Technology Institut Teknologi Bandung Indonesia Industrial Engineering Department Faculty of Engineering Universitas Insan Cendekia Mandiri Indonesia

Museums are artistic centers that attract people as tourist destinations, allowing them to appreciate art, and learn about history, culture, society, and science. The visual presentation of museum spaces is crucial in enhancing the appeal to visitors. It is closely tied to visual appearance and ambient illumination of the space, which can be represented by Mean Room Surface Exitance (MRSE). The objectives of this research are to determine the lighting specifications in exhibition spaces by considering lighting metrics, including MRSE and contrast, and to compare the MRSE values obtained from the calculation, simulation, and measurements from field experiments. The findings of this research indicate that the type of luminaire that can be used is a spotlight with a TAIR (Target-to-Ambient Illuminance Ratio (TAIR) of 3:1 or higher, particularly if the object needs to appear brighter than its surroundings. The error between the experimental and simulated results with the DIALux evo simulation tool was relatively low at 1.4%. However, the error between the experimental results and the calculated results was relatively high, at 25.25%, which is caused by the TAIR factor. The lowest contrast error was obtained for the displayed statue, with a 4% error in the calculation method and 0% error in the simulation method. The highest contrast error was obtained for the wall, with a 66% error in the simulation method due to differences in the room size of the simulation model and the actual space. © 2023 Institute of physics Publishing. All rights reserved.

关键词： Errors

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RGB-D Camera-Based Scanner for Hand Measurement 8

RGB-D Camera-Based Scanner for Hand Measurement

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8th International Conference on Instrumentation, Control, and Automation, ICA 2023

作者： Firdaus, Achmad Norman Suprijanto, Suprijanto Risangtuni, Ayu Gareta Bandung Institute of Technology Faculty of Industrial Technology Engineering Physics Department Bandung Indonesia

ISBN: (纸本)9798350301274

The application of additive manufacturing for production efficiency in industry is needed to produce a minimum cost burden, especially in the health sector. 3D scanning measurement using Intel RealSense camera with RGB-D camera type is used to measure the arm dimension of the patient to carry out the concept of additive manufacturing. This study was conducted based on anthropometric measurement data on a group of respondents who are samples of part of a population with certain conditions. In the upper limbs of humans, there are several points that become references in anthropometric measurements. The digital measurement tools used in this research are the Intel RealSense D435i RGB-D camera and the Intel RealSense SR300 coded light-based 3D system sense scanner. The results of the 3D scan are reconstructed with the stages of feature extraction, feature matching, registration, loop closure detection, pose graph optimization, and meshing. The results of 3D data processing conclude the camera that has an advantage in terms of good scanning results is the system Sense 3D Scanner with smaller error results compared to the Intel RealSense D435i depth camera. © 2023 IEEE.

关键词： Cameras

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Development of a Virtual Balloon Angioplasty Treatment Simulation Device Based on the Spring-Damper Method 8

Development of a Virtual Balloon Angioplasty Treatment Simul...

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8th International Conference on Instrumentation, Control, and Automation, ICA 2023

作者： Maulana, Muhammad Ihsan Nainggolan, Bonfilio Hilliard, Mikha Mukhlish, Faqihza Putra, Narendra Kurnia Institut Teknologi Bandung Faculty of Industrial Engineering Engineering Physics Department Bandung Indonesia Arizona State University Department of Physics TempeAZ United States Institut Teknologi Bandung Engineering Physics Research Group Faculty of Industrial Technology Bandung Indonesia ITB Engineering Physics Research Group Faculty of Industrial Technology Bandung Indonesia

ISBN: (纸本)9798350301274

Stroke is one of the chronic conditions that lead to an 85% of death rate from cardiovascular disease in this world. A stroke is when brain cells will not work correctly or even stop working because brain cells do not get enough oxygen from the bloodstream. Most stroke cases are caused by plaque accumulation inside the blood vessel walls. This kind of condition is commonly known as stenosis. One of the methods for treating stenosis is using balloon angioplasty (BA) to revascularize the blockage area of plaque layers inside the vessels. Most ICAS rehabilitation devices are expensive because were imported from other countries. In order to reinforce the BA fabrication locally, we develop an in silico simulation program to represent the actual phenomenon physically during the stenosis treatment using BA. Thus, the result given will be a reliable recommendation for device *** BA deployment algorithm is virtually implemented using a spring-damper model analogy with the lineal spring approach. This approach allows obtaining physical information such as pressure along the blood vessel model. Thus, it can be evaluated regarding the standard clinical reference about blood vessel conditions. The simulation results were given in the meantime for 5-106 seconds, depending on the several parameters used. The pressure distribution of revascularized blood vessels was also obtained, assuming a uniform modulus of elasticity. © 2023 IEEE.

关键词： Blood vessels

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Bio- colouration of nylon fabric using natural dyes and mordants

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Materials Research Innovations 2025年第2期29卷 108-116页

作者： Chowdhury, Tanvir Ahmed Khandaker, Jahirul Islam Gafur, Mohammad Abdul Repon, Md. Reazuddin Hossain, Alamgir Islam, Md. Kamrul Shanto, Nadim Khan Department of Physics Jahangirnagar University Savar Dhaka Bangladesh Department of Textile Engineering Daffodil International University Dhaka Bangladesh Pilot Plant & Process Development Centre Bangladesh Council of Scientific and Industrial Research Dhaka Bangladesh Department of Production Engineering Faculty of Mechanical Engineering and Design Kaunas University of Technology Kaunas Lithuania

Natural dyes offer a harmless alternative to synthetic counterparts, minimizing the release of toxic chemicals associated with synthetic dyes. In this investigation, nylon fabrics underwent dyeing with neem leaf extract under acidic, neutral and alkaline conditions along with lemon juice mordant. The study revealed that colour strength exhibited an increase with decreasing pH levels, with the mordanted fabric dyed in an acidic medium demonstrating the highest value. Analysis of colour coordinates indicated that the mordanted fabric dyed in an acidic medium exhibited superior colour pickup compared to the other samples. Enhanced fastness properties were achieved under acidic pH conditions when a mordant was used. The FTIR test result ensured the nylon-lemon juice-neem leaves extracted dye interaction. The EDX analysis also confirmed the elemental composition of neem leaves extracted dye in nylon assisted by lemon juice. The SEM test results validated the dyeing process empirically. © 2024 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Alkalinity

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Electrochemical performance of a symmetric supercapacitor device designed using laser-induced multilayered graphene

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新型炭材料(中英文) 2024年

作者： Gargi Dhiman Kavita Kumari Bon-Heun Koo Faheem Ahmed Nagih M.Shaalan Saurabh Dalela Parvez A.Alvi Ranjeet Kumar Brajpuriya Shalendra Kumar Department of Physics School of Advanced EngineeringUPES Industrial Technology Research Institute Changwon National University Changwon Department of Applied Sciences and Humanities Faculty of Engineering and Technology Jamia Millia Islamia Department of Physics College of Science King Faisal University Physics Department Faculty of Science Assiut University Department of Pure & Applied Physics University of Kota Department of Physical Science

This study demonstrates a facile and economical approach for fabricating laser-induced graphene（LIG）, which results in improved electrochemical performance. Polyimide polymer was used as a starting material for LIG synthesis and irradiated under ambient conditions using a CO2laser. The prepared LIG samples were characterized by Raman spectroscopy and FTIR, which validated the formation of multilayered graphene containing sp2 hybridized C=C bonds. The FE-SEM revealed three-dimensional sheetlike structures, while HR-TEM images displayed lattice planes with an interplanar spacing of approximately 0.33 nm, corresponding to the（002） plane of graphene. The electrochemical performance of the as-prepared LIG samples demonstrated a remarkable areal specific capacitance（CA） of 51 mF cm-2(170 F g-1) at 1 mA cm-2(3.3 A g-1) in a three-electrode configuration with 1M KOH as the aqueous electrolyte. The LIG electrodes produced an energy density of ～3.5 μWh cm-2and a power density of ～350 μW cm-2,demonstrating significant energy storage capabilities. Additionally, the electrodes exhibited excellent cyclic stability, retaining 87%of their specific capacitance after 3 000 cycles at 1 mA/cm2. The symmetric supercapacitor fabricated with LIG electrodes and the tested 1M KOH electrolyte showed a specific capacitance of 23 mF cm-2and maintained excellent retention after 10,000 cycles,showing LIG's potential for supercapacitor applications.

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Biomordant assisted natural dyeing of cellulosic fibre: a greener approach

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Materials Research Innovations 2025年第1期29卷 27-34页

作者： Chowdhury, Tanvir Ahmed Khandaker, Jahirul Islam Gafur, Mohammad Abdul Repon, Md. Reazuddin Islam, Md. Kamrul Hossain, Alamgir Mollick, Swaraz Department of Physics Jahangirnagar University Dhaka Bangladesh Department of Textile Engineering Daffodil International University Dhaka Bangladesh Pilot Plant & Process Development Centre Bangladesh Council of Scientific and Industrial Research Dhaka Bangladesh Department of Bioproducts and Biosystems School of Chemical Engineering Aalto University Espoo Finland Department of Production Engineering Faculty of Mechanical Engineering and Design Kaunas University of Technology Kaunas Lithuania Department of Textile Engineering Jashore University of Science and Technology Jashore Bangladesh

Natural dyes serve as a benign alternative to their synthetic counterparts, offering a sustainable option that directly mitigates the release of toxic chemicals. In this study, cotton fabrics were dyed with neem leaf extract in acidic, neutral and alkaline condition where samples were mordanted with lemon juice. The findings revealed a direct correlation between colour strength (K/S) and pH levels, and optimal fastness properties were achieved under alkaline pH conditions when a mordant was employed. The Energy Dispersive X-ray (EDX) ensured the elemental composition of lemon juice assisted dyed fabric which indicates the effective binding of cotton fabric with neem leaves extracted dye. The Fourier Transform Infrared (FTIR) Spectroscopy analysis also confirmed the interaction of cotton fabric with dye particles. The results indicate that cotton fabric can be successfully dyed with neem leaf extract and lemon juice as the biomordant, presenting an eco-friendly and sustainable approach to dyeing practices. © 2024 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Cotton fabrics

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