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Methacrylic acid/Tween 80 engineered amorphous calcium phosphate as an effective bioactive reinforcing nanofillers in dental adhesive

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Dental Materials Journal 2025年第2期44卷 190-200页

作者： Maimansomsuk, Siripatsorn Teangrom, Paremai Teanchai, Chayada Sinthuvanich, Chomdao Ruengket, Pakorn Attarataya, Jakrada Akkarachaneeyakorn, Khrongkhwan Department of Chemistry Faculty of Science Kasetsart University Bangkok10900 Thailand Center of Excellence for Innovation in Chemistry Faculty of Science Kasetsart University Bangkok10900 Thailand Research Center Faculty of Dentistry Mahidol University Bangkok10400 Thailand Department of Biochemistry Faculty of Science Kasetsart University Bangkok Thailand Faculty of Science Kasetsart University Bangkok Thailand Genetic Engineering and Bioinformatics Program Graduate School Kasetsart University Bangkok Thailand Nakhon Ratchasima30000 Thailand

Bioactive fillers in dental adhesives are designed to release beneficial ions, such as calcium and phosphate, to help in remineralization process, and preventing secondary caries. Their incorporation also aims to improve the longevity of dental restorations. Herein, CaP nanoparticles were synthesized through a water-in-oil emulsion method using Tween80 as a surfactant and methacrylic acid (MAA). MAA officiated as a co-surfactant and reduced the size of CaP nanoparticle, including improved compatibility with the components of dental adhesive. The incorporation of 2% T80/CaP/MAA nanofillers into dental adhesive demonstrated increased efficiency, as evidenced by a higher degree of conversion (%DC) and greater micro-tensile bond strength (μTBS). More importantly, T80/CaP/ MAA nanofillers were able to induce remineralization process in the dental structure, which was confirmed by EDX mapping and IR imaging. Finally, a cytotoxicity assessment of the dental adhesive containing T80/CaP/MAA showed no significant adverse effects on human fibroblast cells. © 2025, Japanese Society for Dental Materials and Devices. All rights reserved.

关键词： Stem cells

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Localization of a Crack in Moving Cylindrical Ferromagnetic Rods by Measuring the Fourier Coefficients of the Leakage Magnetic Flux

Localization of a Crack in Moving Cylindrical Ferromagnetic ...

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Magnetic Conference - Short Papers (INTERMAG Short Papers), IEEE International

作者： Kanta Shiku Masafumi Kuromizu Yuji Gotoh Takaaki Nara Graduate School of Information Science and Technology The University of Tokyo bunkyo-ku Japan Division of Materials Science and Production Engineering Graduate School of Engineering Oita University Oita Japan Intelligent Mechanical Systems Program Faculty of Science and Technology Oita University Oita Japan

ISBN: (数字)9798350362213

ISBN: (纸本)9798350362220

Electromagnetic nondestructive inspection for high-speed moving ferromagnetic materials is necessary for manufacturing efficiency. In this paper, we present a novel leakage magnetic flux (LMF) method to estimate the crack position in a moving cylindrical ferromagnetic rod. The method directly measures the first-order Fourier coefficients of the LMF moving with the crack by using only two coils with DC excitation. The location of a crack is estimated by the proposed method, as demonstrated for an S45C cylindrical rod.

关键词： Location awareness Coils Magnetic flux Inspection Ferromagnetic materials Manufacturing Electromagnetics

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Security of Cyber-Physical Systems Against Actuator Attacks through Cryptography*

Security of Cyber-Physical Systems Against Actuator Attacks ...

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International Conference on Information Technology (ICIT)

作者： Samuel Oliveira André B. Leal Marcelo Teixeira Yuri K. Lopes Department of Exact and Technological Sciences Federal University of Amapá (UNIFAP) Macapá/AP Brazil Graduate Program in Electrical Engineering Santa Catarina State University (UDESC) Joinville/SC Brazil Graduate Program in Electrical Engineering Federal University of Technology (UTFPR) Pato Branco/PR Brazil

The connectivity demanded by Industry 4.0 poses new challenges for cyber-physical systems (CPS), notably bolstering resilience against cyberattacks. In this paper, the authors use the formalism of Discrete Event Systems (DES) to design an approach that aims to protect CPS against actuator attacks using event-based symmetric cryptography. In this approach, controllable events that are properly selected are encrypted before being transmitted from the controller to the plant, leading intruders to mistakenly infer the supervisor's control actions. Thus, attacks on actuators do not have the expected impact on the plant, preventing unsafe states from being reached. The proposed approach is applied to a case study from the literature, where the identification of the attack is done without causing any damage while maintaining the integrity of the system.

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Control Strategies for Multifunctional Active Front-End Converter in Oil and Gas Platforms 16

Control Strategies for Multifunctional Active Front-End Conv...

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16th Brazilian Power Electronics Conference, COBEP 2021

作者： Da Rocha, Lorrana F. Vitoi, Lais A. Tedeschi, Elisabetta Brandao, Danilo I. Graduate Program in Electrical Engineering Belo Horizonte Brazil Department of Electric Power Engineering Trondheim Norway Department of Industrial Engineering University of Trento Trento Italy

ISBN: (纸本)9781665421294

This paper compares control strategies for active power exchange and electrical disturbance compensation for multifunction active front-end converters applied to offshore oil and gas platforms. Such scenarios are characterized as weak grids due to their isolated nature and the presence of heavy motor loads. Thereby, harmonic compensation may play an important role in increasing power quality indexes. Thus, different strategies (i.e., sinusoidal current and resistive load synthesis) are com-pared, varying between injection, absorption and compensation targets. Such functionalities are fully performed by active front-end converters embedded in energy storage system since the bidirectional power exchange is possible;or partially performed by wind-based system, variable frequency drive and active power filter. The strategies are analyzed in terms of damping capacity through the frequency response, voltage distortion caused at the point of the converter connection, total demand distortion for the source current, and power factor at the terminals of the generators. © 2021 IEEE.

关键词： Frequency response

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Enhanced Performance and Data Privacy in Lung Nodule Classification via Federated Deep Learning Approach 24

Enhanced Performance and Data Privacy in Lung Nodule Classif...

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2024 7th International Conference on Healthcare Service Management, ICHSM 2024

作者： Nguyen, Duc-Khanh Li, Ai-Hsien Adam Lai, Yen-Jun Chiu, Yen-Ling Phan, Dinh-Van Chien, Ting-Ying Chan, Chien-Lung Department of Information Management Yuan Ze University Taoyuan Taiwan Department of Statistics and Informatics University of Economics The University of Danang Danang Viet Nam Division of Cardiology Far Eastern Memorial Hospital New Taipei Taiwan Graduate Program in Biomedical Informatics Yuan Ze University Taoyuan Taiwan Department of Radiology Far Eastern Memorial Hospital New Taipei Taiwan Graduate Institute of Medicine and Graduate Program in Biomedical Informatics Yuan Ze University Taoyuan Taiwan Department of Medical Research Far Eastern Memorial Hospital New Taipei Taiwan Department of Computer Science and Engineering Yuan Ze University Taoyuan Taiwan ZDT Group- YZU Joint Research and Development Center for Big Data Taoyuan Taiwan Yuan Ze University Taoyuan Taiwan

ISBN: (纸本)9798400710162

This study explores the feasibility of deep learning for classifying nodule neoplasms, analyzing their performance on two openly available datasets, LUNGx SPIE, and LIDC-IDRI. These datasets offer valuable diversity in image quantity, quality, and malignancy annotation methodologies, posing a real-world challenge for effective model development. To handle the disparities in these diverse datasets, we aim to develop a robust classification model trained using federated learning. This decentralized approach allows model training across datasets without sharing patient data, preserving privacy and overcoming data fragmentation. Our experiments demonstrate that federated learning enables the development of a robust and superior deep learning model compared to individual models trained on limited data. This combination of deep learning, and federated learning holds immense promise for nodule neoplasm classification and can significantly improve patient care and outcomes. © 2024 Copyright held by the owner/author(s).

关键词： Federated learning

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Multi-objective Linear Approach for the Reliability-Redundancy Allocation Problem

Multi-objective Linear Approach for the Reliability-Redundan...

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2021 International Conference on Communication, Control and Information Sciences, ICCISc 2021

作者： De Quadros Maia Filho, Danilo Bessani, Michel Universidade Federal de Minas Gerais Graduate Program in Electrical Engineering Belo Horizonte31270-901 Brazil

ISBN: (纸本)9781665412797

This paper goes through the reliability-redundancy allocation problem in its multi-objective form, maximizing the reliability, and minimizing cost, restricted by design limits. The motivation is to adapt a previously proposed problem formulated as a complex, continuous, and nonlinear model, to a simpler linear and discrete model based on some usual market assumptions. Unlike previous works that have used an unlimited set of suppliers, a limited set of components were chosen, each one with a specific value of reliability. All the study is done in a scenario of one system with ten subsystems from a pharmaceutical plant. After that, the Linear programming technique CPLEX solver is applied, together with an epsilon-restricted multi-objective approach to solve the presented formulation. The purpose is to solve the reliability-redundancy allocation problem inspired in previous works but adapting it to such specific conditions with a limited number of suppliers and components. The paper brings a final solution selected from the Pareto Front, with specific reliability and cost, and goes deeper, describing how many components are needed for each subsystem and from which supplier. © 2021 IEEE.

关键词： Multiobjective optimization

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Altitudinal Migration of Species of Fir (Abies spp.) in Adaptation to Climate Change

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Water, Air, and Soil Pollution 2022年第9期233卷 1-16页

作者： Tekin, Oktay Cetin, Mehmet Varol, Tugrul Ozel, Halil Baris Sevik, Hakan Zeren Cetin, Ilknur Institute of Science and Engineering Department of Sustainable Agriculture and Natural Plant Resources Kastamonu University Kastamonu Turkey Faculty of Architecture Department of City and Regional Planning Ondokuz Mayis University Samsun Turkey Faculty of Forestry Department of Forest Engineering Bartin Turkey Faculty of Forestry Department of Forest Engineering Bartin University Bartin Turkey Faculty of Engineering and Architecture Department of Environmental Engineering Kastamonu University Kuzeykent Campus Kastamonu37150 Turkey YOK 100/2000 Scholarship Program of Sustainable Forestry Institute of Graduate School Department of Forest Engineering Bartin University Bartin Turkey Department of Park and Garden Plants Program of Landscape and Ornamental Plants Cultivation Samsun Vocational School Ondokuz Mayis University Samsun Turkey

Global climate change is considered an irreversible problem, which might directly or indirectly affect all the organisms and ecosystems on the earth and the world has to struggle with. Plants having no effective movement mechanism are the group that global climate change will affect the most. In order to minimize the species and population losses, it is important to estimate the changes in the available distribution areas of species and to ensure the migration mechanism, which the species will need, by the hand of humans. The present study aims to reveal how potential distribution areas of fir, which is among the significant tree species of Turkey and significant portion of global distribution of which is in Turkey, will change from an altitudinal aspect because of the climate change. The results achieved showed that, because of the effects of global climate change, the suitable distribution areas of Abies nordmanniana subsp. nordmanniana will significantly decrease especially at high altitudes and that suitable distribution areas of Abies nordmanniana subsp. equi-trojani will reduce at altitudes higher than 1400 m but increase generally at the altitudes between 200 and 600 m. Moreover, suitable distribution areas of Abies cilicica will shift towards higher altitudes. © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

关键词： Climate change

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Electrocardiogram Detection System of Autistic Children Based on AD8232 for Healthcare

Electrocardiogram Detection System of Autistic Children Base...

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Computer System, Information Technology, and Electrical engineering (COSITE), International Conference on

作者： Cut Nanda Nurbadriani Melinda Melinda Yunidar Yunidar Fitri Arnia Graduate program of Electrical Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh Indonesia dept. Electrical Engineering Universitas Syiah Kuala Banda Aceh Indonesia

This study is to design and test an early detection tool based on the AD8232 sensor as an ECG detection system. This system is applied to autistic children. Potentially hyperactive autistic children may increase their heart rate suddenly compared to normal children. Through a system that can detect heart conditions can help experts who deal with ECG problems in autistic children. This system is applied to autistic children by using components that are arranged in such a way as to be easy to use for autistic children. With the help of three electrodes attached to the child’s body, namely on the hands and chest, in a test period of 2500 ms. Utilization of the AD8232 sensor and other components can produce heartbeat waves of autistic children. Based on testing by filtering and segmenting, the signal recording results when the electrodes are attached to the hand there is interference from excessive movement. Whereas when the electrode is attached to the chest, it produces a stable signal because the movements made do not affect the electrode during the test. Thus, the use of electrodes on the chest is more appropriate because the sensor can record signals properly.

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Study of chlorine removal from shredder residue: Thermal dechlorination and water leaching

Sustainable Chemistry for the Environment

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Sustainable Chemistry for the Environment 2024年 6卷

作者： Manera, Christian Perondi, Daniele Restelatto, Danielle Godinho, Marcelo Vilela, Antônio Cezar Faria Graduate Program in Mining Metallurgical and Materials Engineering Federal University of Rio Grande do Sul (UFRGS) Rio Grande do Sul Porto Alegre Brazil Graduate Program in Process Engineering and Technologies University of Caxias do Sul (UCS) Rio Grande do Sul Caxias do Sul Brazil Graduate Program in Materials Science and Engineering University of Caxias do Sul (UCS) Rio Grande do Sul Caxias do Sul Brazil

Shredder residue (SR) is an inevitable waste in the production of steel by scrap melting, and the presence of chlorine is the main responsible for its non-use of energy. This study aimed to remove chlorine from SR by thermal dechlorination and water leaching. Thermal dechlorination was first studied from a PVC sample to evaluate the optimum parameters of temperature, heating rate, residence time and atmosphere (N₂ or steam). Under optimal conditions for PVC dechlorination, chlorine removals of 73.7 (N₂) and 68.0% (steam) were achieved. Optimal parameters were applied to thermal dechlorination of a Brazilian SR with a chlorine content of 2.12 wt%. Reductions in chlorine content to 0.95 and 0.51 wt% were observed with N₂ and steam atmospheres, respectively. In an additional evaluation (conducted also with the Brazilian SR and in order to investigate the reactor rotation effect), it was observed that the reactor rotation does not influence the release of chlorine during the thermal treatment but modifies the granulometry of the produced solid. Samples obtained from this test were subjected to a water leaching study to further reduce the chlorine content. The parameters studied were the type of water (tap and distilled), granulometry and carbonation (contact with CO₂) in a total of five washing cycles. Carbonation and use of distilled water achieved the highest chlorine removal resulting in a reduction of chlorine content from 1.13 to 0.45 wt%. The obtained results show directions for chlorine removal aiming at the energetic use of shredder residue. © 2024 The Authors

关键词： Carbonation Chlorine leaching Design of experiment Polyvinyl chloride Shredder residue

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Low-Cost CSRR-based Microwave Sensor for Evaluating Water Quality to Prevent Unwanted Sugar Contamination

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Journal of Microwaves, Optoelectronics and Electromagnetic Applications 2025年第2期24卷

作者： de Sousa, Bruno Matias Duarte, José Garibaldi da Silva Neto, Valdemir Praxedes Graduate Program in Electrical and Computer Engineering Federal University of Rio Grande do Norte RN Natal Brazil Department of Communication Engineering Federal University of Rio Grande do Norte RN Natal Brazil

This study proposes a low-cost microwave sensor for the monitoring of water quality contamination in irrigation systems. The sensor was employed for monitoring the concentration of specific compounds in mixtures of glucose and water, in order to prevent the accumulation of unwanted sugars in large plantations. The proposed sensor is an adaptation of a complementary split ring resonator (CSRR) fabricated on an FR4 substrate. A capillary tube constructed from polypropylene is inserted into the region of the CSRR microwave sensor exhibiting the maximum density surface current, wherein the liquid under test (LUT) is contained. The sensor was designed to operate at a resonance frequency of 2.45 GHz in the absence of a load. The maximum displacement observed at the resonance frequency is 275 MHz, with a normalization sensitivity of 0.844%. The simulations and experimental measurements are verified and their results compared, yielding a high level of concordance for the sensor’s intended purpose. The discrepancy between the measured permittivity values and the reference values of the samples under analysis is less than 5%. The proposed sensor is an effective solution for characterizing liquids, particularly mixtures of water and glucose, when compared to other sensors available for this application. © 2025 SBMO/SBMag.

关键词： Microwave sensors

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