{"title":"Finger-vein Secure Access Based on Lightweight Dual-attention Convolutional Neural Network for Quality Distance Education","authors":"Liang-Ying Ke, Chih-Hsien Hsia","doi":"10.18494/sam4858","DOIUrl":"https://doi.org/10.18494/sam4858","url":null,"abstract":"","PeriodicalId":22154,"journal":{"name":"Sensors and Materials","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140234866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing the Willingness of Adopting AI in Education Using Back-propagation Neural Networks","authors":"Chien-Hung Wu, Chih-Hsiang Hung, Chih-Chien Shen, Jo-Hung Yu","doi":"10.18494/sam4485","DOIUrl":"https://doi.org/10.18494/sam4485","url":null,"abstract":"","PeriodicalId":22154,"journal":{"name":"Sensors and Materials","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140232046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of Neural Network and Structural Model in AI Educational Performance Analysis","authors":"Yung-Cheng Yao, Kuo-Cheng Chung","doi":"10.18494/sam4429","DOIUrl":"https://doi.org/10.18494/sam4429","url":null,"abstract":"","PeriodicalId":22154,"journal":{"name":"Sensors and Materials","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140232078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Determination and Imaging of Lactones in Beef by Girard’s Reagent T Derivatization Technique","authors":"Hitomi Shikano, Kazunori Matsumoto, Fumika Honma, Naoaki Obana, Kazuaki Yoshinaga, Yuka Takada, Naoto Ishikawa, Meguru Hara, Daisaku Kaneko, Shu Taira","doi":"10.18494/sam4813","DOIUrl":"https://doi.org/10.18494/sam4813","url":null,"abstract":"","PeriodicalId":22154,"journal":{"name":"Sensors and Materials","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140257253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Visualization of Nutrients and Functional Compounds of Asparagus (Asparagus officinalis L.) by Imaging Mass Spectrometry","authors":"Mariko Furukawa, Hitomi Shikano, Yukino Watanabe, Makoto Muto, Daisaku Kaneko, Shu Taira","doi":"10.18494/sam4817","DOIUrl":"https://doi.org/10.18494/sam4817","url":null,"abstract":"","PeriodicalId":22154,"journal":{"name":"Sensors and Materials","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140256966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The incidence of diabetes mellitus is rapidly increasing in developed and developing countries. Point-of-care testing (POCT) is a useful tool in developing countries with a poorly developed infrastructure. Glycated hemoglobin (HbA1c) is a reliable indicator for diabetes mellitus testing, and POCT devices for HbA1c have been developed. In this study, we developed a microfluidic channel device for quantifying HbA1c that is small and easy to measure on the basis of the latex aggregation method. Microfluidic channels were integrated into the front and back surfaces of a polymethyl methacrylate substrate of 40 mm width × 60 mm length × 1 mm thickness. The front side was composed of a main channel, including a mixing channel. The reverse side featured a channel for funneling the gas (nitrogen) generated from the light-gas generation pumps. In these pumps, the azide compound was decomposed by light irradiation and nitrogen gas was generated. The generated nitrogen gas enabled liquid transfer. The optical system consisted of an LED (660 nm) and a photodetector. Its sensitivity was improved by optimizing the aperture size. This system can quantify HbA1c, and at HbA1c concentrations of 0, 4.4, 9.6, and 13.9%, the absorbance values were 0, 0.11, 0.28, and 0.39, respectively. A linear relationship between concentration and absorbance was observed with a determination coefficient of 0.99, a standard deviation (SD) of 0.009–0.015, and a coefficient of variation (CV) of 2.4–9.3%. The concentration of HbA1c in whole blood could also be determined on the basis of the calibration curve obtained. This system is expected to be useful for HbA1c testing in remote areas and clinics.
{"title":"Integrated Microfluidic Device for Glycated Hemoglobin (HbA1c) Testing Using Light-gas Generation Pump","authors":"Yoshinori Akagi, Jun Doi","doi":"10.18494/sam4824","DOIUrl":"https://doi.org/10.18494/sam4824","url":null,"abstract":"The incidence of diabetes mellitus is rapidly increasing in developed and developing countries. Point-of-care testing (POCT) is a useful tool in developing countries with a poorly developed infrastructure. Glycated hemoglobin (HbA1c) is a reliable indicator for diabetes mellitus testing, and POCT devices for HbA1c have been developed. In this study, we developed a microfluidic channel device for quantifying HbA1c that is small and easy to measure on the basis of the latex aggregation method. Microfluidic channels were integrated into the front and back surfaces of a polymethyl methacrylate substrate of 40 mm width × 60 mm length × 1 mm thickness. The front side was composed of a main channel, including a mixing channel. The reverse side featured a channel for funneling the gas (nitrogen) generated from the light-gas generation pumps. In these pumps, the azide compound was decomposed by light irradiation and nitrogen gas was generated. The generated nitrogen gas enabled liquid transfer. The optical system consisted of an LED (660 nm) and a photodetector. Its sensitivity was improved by optimizing the aperture size. This system can quantify HbA1c, and at HbA1c concentrations of 0, 4.4, 9.6, and 13.9%, the absorbance values were 0, 0.11, 0.28, and 0.39, respectively. A linear relationship between concentration and absorbance was observed with a determination coefficient of 0.99, a standard deviation (SD) of 0.009–0.015, and a coefficient of variation (CV) of 2.4–9.3%. The concentration of HbA1c in whole blood could also be determined on the basis of the calibration curve obtained. This system is expected to be useful for HbA1c testing in remote areas and clinics.","PeriodicalId":22154,"journal":{"name":"Sensors and Materials","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140257699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We report a miniaturized batteryless colorimetric biosensing system for measuring saliva components. Our system utilizes a CMOS image sensor and an LED light source embedded in smartphones as a part of the optical system. We measured the concentration of chemical substances by observing color changes of the coloring reagent DA-64, which is specific for hydrogen peroxide. The concentration calculated from the RGB scores of colorimetric images showed strong correlations ( r > 0.95) with the concentrations of the samples. This result shows the possibility of biochemical measurements using miniaturized biosensing systems to determine physiological conditions.
{"title":"Development of a Smartphone-linked Optical Biosensing System for Point-of-care Testing Applications","authors":"Miku Sarubo, Yuka Numazaki, Hiroyuki Kudo","doi":"10.18494/sam4851","DOIUrl":"https://doi.org/10.18494/sam4851","url":null,"abstract":"We report a miniaturized batteryless colorimetric biosensing system for measuring saliva components. Our system utilizes a CMOS image sensor and an LED light source embedded in smartphones as a part of the optical system. We measured the concentration of chemical substances by observing color changes of the coloring reagent DA-64, which is specific for hydrogen peroxide. The concentration calculated from the RGB scores of colorimetric images showed strong correlations ( r > 0.95) with the concentrations of the samples. This result shows the possibility of biochemical measurements using miniaturized biosensing systems to determine physiological conditions.","PeriodicalId":22154,"journal":{"name":"Sensors and Materials","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140257545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Kawaguchi, Naoki Hayashi, Toshiaki Kunikata, Kensei Ichiba, Takumi Kato, D. Nakauchi, Takayuki Yanagida
{"title":"Photoluminescence and Radioluminescence Properties of Y3Al5O12 Doped with 3d-Transition Metal Ions","authors":"N. Kawaguchi, Naoki Hayashi, Toshiaki Kunikata, Kensei Ichiba, Takumi Kato, D. Nakauchi, Takayuki Yanagida","doi":"10.18494/sam4768","DOIUrl":"https://doi.org/10.18494/sam4768","url":null,"abstract":"","PeriodicalId":22154,"journal":{"name":"Sensors and Materials","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139958126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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