Applied Research最新文献_第10页

Photocatalytic degradation of methylene blue by anatase TiO2 coating 锐钛型二氧化钛涂层光催化降解亚甲基蓝

Applied Research Pub Date : 2024-04-09 DOI: 10.1002/appl.202300081

Nikolai Desch, Angela Rheindorf, Cornelia Fassbender, Marc Sloot, Markus Lake

{"title":"Photocatalytic degradation of methylene blue by anatase TiO2 coating","authors":"Nikolai Desch, Angela Rheindorf, Cornelia Fassbender, Marc Sloot, Markus Lake","doi":"10.1002/appl.202300081","DOIUrl":"10.1002/appl.202300081","url":null,"abstract":"Photocatalytic coatings have the potential to contribute to the purification of water via an advanced oxidation process (AOP). A commonly used method for analyzing the mechanism of the photocatalytic performance of a given reactor type is to document the degradation behavior in a solution containing methylene blue. However, since methylene blue is rather unstable, the degradation results should be viewed critically. In this work, the degradation behavior of a test solution with methylene blue on quartz glass surfaces coated with photocatalytic titanium dioxide (TiO2) of the anatase modification was investigated through a variety of different light sources. The coating was deposited by physical vapor deposition (PVD) with the reactive pulsed DC magnetron sputtering ion plating (MSIP) method described in the study by Desch and Lake, while the quartz glasses were coated with a 100 nm thick TiO2 coating on the outside. The same glasses were used for all experiments with TiO2. In the determination of the degradation rate, additional experiments were performed using pure quartz glass without any coating, which made it possible to examine the influence of different light sources on the degradation rate of methylene blue in general. Three different light sources, namely UV-A, UV-C, and simple fluorescent lamps were used in this study. The concentration of methylene blue was recorded by photo spectrometer in 10-min increments throughout the experiment and the experiments were performed for 24 h in all cases. Our data indicates that the methylene blue test is a poor method because the degradation rate is not clearly differentiable due to the low stability of the test substance. Without including reference testing in the absence of a catalyst, data may be subject to misinterpretation.","PeriodicalId":100109,"journal":{"name":"Applied Research","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/appl.202300081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140725908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparing mass transfer and reaction rate kinetics in starch hydrolysis during food digestion 比较食物消化过程中淀粉水解的传质和反应速率动力学

Applied Research Pub Date : 2024-04-09 DOI: 10.1002/appl.202400023

Yongmei Sun, Zelin Zhou, Chao Zhong, Zexin Lei, Timothy A. G. Langrish

{"title":"Comparing mass transfer and reaction rate kinetics in starch hydrolysis during food digestion","authors":"Yongmei Sun, Zelin Zhou, Chao Zhong, Zexin Lei, Timothy A. G. Langrish","doi":"10.1002/appl.202400023","DOIUrl":"10.1002/appl.202400023","url":null,"abstract":"This study demonstrates evidence that the mass transfer process of an enzyme (a biocatalyst) is the rate-limiting step in the starch hydrolysis reaction during food digestion. The significance of this work has been to compare the reaction rate of starch hydrolysis by salivary enzymes with the mass transfer rate of rate-limiting enzymes. This research has applied mass transfer and reaction engineering theory in a quantitative study of starch hydrolysis, and a dimensionless group, the Damköhler number (Da), has been calculated based on glucose measurements from a beaker and stirrer system. The values of the Da number in this study (0.3–19) indicate that both the time constant for mass transfer and the time constant for reaction are significant parameters. Scanning electron microscopy images emphasize that compression (simulated mastication) helps to break the plant cell wall of starch. Mass-transfer resistance needs to be considered during food digestion studies. The Da numbers are significantly affected by both compression forces (internal mass-transfer coefficients) and stirrer speeds (external mass-transfer coefficients) in this beaker and stirrer system.","PeriodicalId":100109,"journal":{"name":"Applied Research","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/appl.202400023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140726452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving performance of aerosol jet printing using machine learning-driven optimization 利用机器学习驱动的优化技术提高气溶胶喷射印刷的性能

Applied Research Pub Date : 2024-04-05 DOI: 10.1002/appl.202300110

Prashantkumar Pandey, Steffen Ziesche, Gauranggiri Meghanathi

{"title":"Improving performance of aerosol jet printing using machine learning-driven optimization","authors":"Prashantkumar Pandey, Steffen Ziesche, Gauranggiri Meghanathi","doi":"10.1002/appl.202300110","DOIUrl":"10.1002/appl.202300110","url":null,"abstract":"Aerosol jet printing is a promising technology for printing functional materials on a variety of substrates with high precision and resolution. This technology has the potential to revolutionize the manufacturing industry by providing a low-cost, high-resolution printing technique that can be used to produce additively printed electronics, sensors, and energy devices. However, the optimization of this process has traditionally relied on time-consuming trial-and-error methods, hampering its efficiency and scalability. Machine learning (ML) models have the potential to overcome these challenges and improve the quality, speed, and efficiency of the printing process. In this paper, we propose an approach that leverages ML algorithms to streamline and enhance the aerosol jet printing optimization process. Our methodology involves data collection through systematic experimentation with various parameter settings. This data set serves as the foundation for training different ML model capable of predicting printed line characteristics and optimal printing process parameter. We validate our approach by performing experiments on different inks, and we compare the results of our ML-based optimization approach to those obtained using traditional trial-and-error methods. The results demonstrate that our approach offers significantly higher accuracy and efficiency. To enhance our approach's accessibility and ease of use, we incorporate AutoML techniques which automates the process of selecting the most suitable ML algorithms and hyperparameters, reducing the burden of manual configuration. Furthermore, we introduce a user-friendly web-based interface that facilitates the entire ML pipeline, from data preprocessing to prediction and batch processing. This interface empowers users to efficiently manage and manipulate their data, select appropriate ML algorithms, and execute predictions, ultimately improving accuracy and model performance.","PeriodicalId":100109,"journal":{"name":"Applied Research","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/appl.202300110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140738461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integration and characterization of a zeolite material in a microcomponent for measurements of environmental carbon dioxide 用于测量环境二氧化碳的微型组件中沸石材料的集成与表征

Applied Research Pub Date : 2024-04-04 DOI: 10.1002/appl.202300105

Erika Åkerfeldt, Greger Thornell, Anders Persson

{"title":"Integration and characterization of a zeolite material in a microcomponent for measurements of environmental carbon dioxide","authors":"Erika Åkerfeldt, Greger Thornell, Anders Persson","doi":"10.1002/appl.202300105","DOIUrl":"10.1002/appl.202300105","url":null,"abstract":"This study demonstrates integration of a zeolite material in a ceramic microcomponent intended for use in sampling and analysis of environmental carbon dioxide (CO2). The zeolite material was integrated in bulk form, allowing for adsorption of large quantities of CO2 compared to previous integration attempts as thin films. To obtain a porous bulk material, an injectable slurry was developed, where expandable polymeric microspheres were added as a sacrificial template. By varying water and sphere contents of the slurry, it was possible to tune the porosity of the zeolite material between 55% and 72%. This in turn affected the flow resistance of the microcomponents, where an increase in the porosity of the filling from 62% to 72% reduced the flow resistance from 84 to 28 kPa min cm−3. In addition, the spheres facilitated complete fillings free from cracks. The zeolite material was seen to retain its ability to adsorb CO2 after processing, but it was not possible to quantify the level of retention compared to unprocessed zeolite.","PeriodicalId":100109,"journal":{"name":"Applied Research","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/appl.202300105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140743010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sonification methods for enabling augmented data analysis applied to graphene optoelectronics 应用于石墨烯光电子学的增强数据分析声化方法

Applied Research Pub Date : 2024-04-03 DOI: 10.1002/appl.202300092

Adam Johan Bergren, Angela Beltaos, Alexander van Dijk

引用次数: 0

Cover Image: Volume 3 Issue 2 封面图片：第 3 卷第 2 期

Applied Research Pub Date : 2024-04-02 DOI: 10.1002/appl.202470201

Jianhui Liu, Xiaolin Liu, Tianfu Zhang, Jinqing Huang, Ben Zhong Tang, Ying Chau

引用次数: 0

Effect of carbonization temperatures on the synthesis of biocarbon from Borassus flabellifer fruit fiber for capacitive energy storage 碳化温度对用于电容储能的花叶鲍鱼果纤维生物碳合成的影响

Applied Research Pub Date : 2024-03-30 DOI: 10.1002/appl.202400005

Natarajan Sumangala Devi, Singaravelu Vivekanandhan

{"title":"Effect of carbonization temperatures on the synthesis of biocarbon from Borassus flabellifer fruit fiber for capacitive energy storage","authors":"Natarajan Sumangala Devi, Singaravelu Vivekanandhan","doi":"10.1002/appl.202400005","DOIUrl":"10.1002/appl.202400005","url":null,"abstract":"Borassus flabellifer (Palmyra) fruit fiber (PFF) was extracted and converted into biocarbon materials at different carbonization temperatures of 400°C, 600°C, and 800°C under N2 atmosphere for 1 h. The physicochemical properties of obtained biocarbon materials were investigated via CHNS, SEM-EDX, FTIR, RAMAN, XRD, BET-specific surface area, and TGA techniques. The obtained results were correlated with the capacitive energy storage application of biocarbon materials. The highest specific surface area of 46.36 m2 g−1 was observed for the biocarbon materials obtained at 800°C, which also showed superior capacitive performances. The specific capacitances of PFF-derived biocarbon materials obtained at 400°C, 600°C, and 800°C are respectively found to be 28.58, 37.07, and 45.76 F g−1 at 1 A g−1 employing 1M KOH as electrolyte. The biocarbon materials obtained at 800°C showed the highest specific energy and power of 1.99 and 261 W kg−1 at 1 A g−1.","PeriodicalId":100109,"journal":{"name":"Applied Research","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/appl.202400005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140363416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrical sensing of single oocytes in microfluidic systems: A mini review 修订 R1 微流体系统中的单个卵母细胞电传感--微型综述

Applied Research Pub Date : 2024-03-30 DOI: 10.1002/appl.202400022

Uwe Schnakenberg, Yuan Cao

引用次数: 0

Characterization and application of a microemulsion as model system for lipophilic phytochemicals in high-pressure processing 将微乳液作为亲脂植物化学物质高压加工模型系统的表征与应用

Applied Research Pub Date : 2024-03-26 DOI: 10.1002/appl.202400016

Svenja Tauber, Simon Fehn, Mario Schmidt, Uwe Schwarzenbolz, Volker Böhm

{"title":"Characterization and application of a microemulsion as model system for lipophilic phytochemicals in high-pressure processing","authors":"Svenja Tauber, Simon Fehn, Mario Schmidt, Uwe Schwarzenbolz, Volker Böhm","doi":"10.1002/appl.202400016","DOIUrl":"10.1002/appl.202400016","url":null,"abstract":"High-pressure processing (HPP) is considered as gentle preservation technique for especially heat-sensitive food ingredients. So far, the focus has been on the fact that it is called a nonthermal process and high pressure can affect bioavailability, but it is questionable whether the high pressure affects the ingredients themselves. By using an o/w-microemulsion (ME) as a model system, it was possible to investigate the influence of pressure, especially on lipophilic compounds (e.g., carotenoids and vitamin E), without the complexity of a food matrix. The ME consisted of Capryol® TM 90, Tween® 80 or 20, Transcutol® HP and distilled water. Lipophilic and hydrophilic compounds were introduced to the oil phase and to the aqueous phase, respectively. Storage experiments confirmed the applicability for β-carotene and α-tocopherol. HPP of MEs, performed for 10 min at room temperature (RT) and up to 600 MPa, resulted in pressure stability of β-carotene (exceptional at 400 MPa; −11%) and α-tocopherol. Multicomponent ME showed that both had a positive effect on the stability of chlorophyll a/b during HPP. An ME environment was used to facilitate co-oxidation of β-carotene via lipoxygenase (LOX) from an Edamame-based crude enzyme extract and lyophilized LOX-1 from soybeans during storage (RT and 4°C, dark conditions) and HPP treatment. A loss of β-carotene occurred after addition of linoleic acid, whereas effects of added α-tocopherol could be related to β-carotene protection. Overall, the introduced ME for studying HPP effects on lipophilic food ingredients showed promising results as versatile model system for future investigations regarding interactions of phytochemicals.","PeriodicalId":100109,"journal":{"name":"Applied Research","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/appl.202400016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140380489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Callistemon citrinus: A plant-mediated synthesis of sustainable Rhodium nanoparticles and their antimicrobial activity Callistemon citrinus：植物介导的可持续铑纳米粒子合成及其抗菌活性。

Applied Research Pub Date : 2024-03-18 DOI: 10.1002/appl.202300130

Enas Ismail, Abubaker Mohamed, Ernest Maboza, Mokhotjwa Simon Dhlamini, Razia Z. Adam

{"title":"Callistemon citrinus: A plant-mediated synthesis of sustainable Rhodium nanoparticles and their antimicrobial activity","authors":"Enas Ismail, Abubaker Mohamed, Ernest Maboza, Mokhotjwa Simon Dhlamini, Razia Z. Adam","doi":"10.1002/appl.202300130","DOIUrl":"10.1002/appl.202300130","url":null,"abstract":"This work investigates the potential of using Callistemon citrinu flower extract, commonly known as bottlebrush, in the environmentally friendly synthesis of Rhodium nanoparticles (Rh NPs). Callistemon citrinu flower extract contains a high concentration of flavonoids and other phytochemicals. Hence, the extract was used to provide the essential components for an environmentally, sustainable synthesis method of Rh NPs. Different characterization analyses were used to evaluate the different properties of the synthesized particles. UV spectroscopy analysis demonstrated a continuous UV absorption spectrum attributed to the formation of Rh NPs. The XRD data and SAED analysis showed an amorphous nature of the synthesized Rh NPs. The HRTEM imaging provided morphological information about the Rh NPs tested sample, where the efficiency of Callistemon citrinu flower extract as a capping agent was reported. Furthermore, Raman spectra displayed the characteristic vibrational bands of the synthesized Rh NPs. The antimicrobial activity of the synthesized samples was tested against several dental pathogens, that play a role in dental caries, Staphylococcus aureus (SA), Bacillus subtilis (BS), Candida albicans (CA), Escherichia coli (Eco), and Staphylococcus epidermidis (S. Epi). In comparison with the control, Chlorhexidine (CHX), Rh NPs showed a greater impact on C. albicans (20 ≤ Zone of inhibition (ZOI) (mm) ≤ 26). The statistical analysis demonstrated that Rh NPs had a greater mean ZOI than the Callistemon citrinu flower extract. These results reveal the considerable potential and biological capacity Rh NPs have as an antifungal agent for dental applications.","PeriodicalId":100109,"journal":{"name":"Applied Research","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/appl.202300130","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140233366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0