Macromolecular Symposia最新文献_第10页

Automation Of Document Management Workflow For A Higher Education Institution 高等院校文档管理工作流程的自动化

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70035

Daniela Tunsoiu, Angela Neacșu, Nicolae Tunsoiu, Alexandru-Ionuț Nicolescu, Cristian-Vasile Doicin

引用次数: 0

Sustainable Recycling of Red Tomato Waste Through Metakaolin-Based Geopolymers 利用偏高岭土聚合物可持续回收红番茄废弃物

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70026

Antonio D'Angelo

{"title":"Sustainable Recycling of Red Tomato Waste Through Metakaolin-Based Geopolymers","authors":"Antonio D'Angelo","doi":"10.1002/masy.70026","DOIUrl":"https://doi.org/10.1002/masy.70026","url":null,"abstract":"The strong need to reduce waste disposal and pollution has led to an increase in the development of sustainable waste-based materials. One recent target is the reduction in the use of Portland cement, a construction material, because of the high water and energy consumption, as well as the high CO2 release linked to greenhouse gas emissions and global warming. Geopolymers, or amorphous aluminosilicate polymers, are sustainable candidates for Portland cement substitution. In this study, metakaolin-based geopolymers have been synthesized at different curing temperatures (25, 40, and 60 °C), and the effect of the addition of 10 wt.% of red tomato waste has been investigated. The synthesized geopolymers are characterized through Fourier-transform infrared spectroscopy (FTIR), integrity test, chemical oxygen demand (COD), and antimicrobial activity. FTIR analysis reveals that both the curing temperature and the organic matter do not interfere with geopolymerization reactions. The integrity tests suggest that the samples are macroscopically well-hardened. However, the presence of yellow color from integrity test water leachates underlines the release of organic molecules. These compounds are not released after 4 days as also confirmed by COD analyses carried on up to 9 days. Eventually, all the samples showed antimicrobial activity against both Gram-positive and -negative strains.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/masy.70026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309022","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

Title Page 414-3 标题页414-3

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70070

引用次数: 0

How AI Can Aim and Reduce the Annual Amount of Energy Consumption in European SMEs 人工智能如何瞄准并降低欧洲中小企业的年度能耗

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70045

Paolo Pariso, Michele Picariello, Alfonso Marino

引用次数: 0

Controlled Release and Antibacterial Properties of Quercetin-Loaded Silica Hybrids for Drug Delivery 槲皮素负载硅杂化物的控释及抗菌性能研究

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70024

Luigi Vertuccio, Marika Fiorentino

{"title":"Controlled Release and Antibacterial Properties of Quercetin-Loaded Silica Hybrids for Drug Delivery","authors":"Luigi Vertuccio, Marika Fiorentino","doi":"10.1002/masy.70024","DOIUrl":"https://doi.org/10.1002/masy.70024","url":null,"abstract":"Natural products from plants are valuable alternatives to synthetic drugs for treating cancers and bacterial infections. However, their low solubility and absorption pose challenges, necessitating a biocompatible system for controlled release at the target site. Hybrid materials, such as silica (SiO2) encapsulating quercetin (Qu), offer a solution by protecting the organic compound and maintaining its anticancer and antibacterial properties. Two synthesis methods for quercetin-encapsulated silica were explored: one with an acid catalyst (SiO2-HNO3+Qu5%) and one without a catalyst (SiO2+Qu5%), aiming for an eco-friendly approach. The encapsulation efficiency of the silica matrix was analyzed, and release studies were carried out using UV–visible spectroscopy under physiological (pH = 7.4) and cancer (pH = 5.0) conditions. The release of quercetin was found to be pH-dependent, with the SiO2+Qu5% system demonstrating superior release capacity. However, the system synthesized with the acid catalyst exhibited better antibacterial activity, likely due to the release of nitrate ions. The study highlights the potential of these hybrid materials in drug delivery applications, balancing efficient quercetin release, and enhanced antibacterial effects.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/masy.70024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309171","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

Postirradiation Analysis And Comparison Of Additively Manufactured Stainless Steel 316L Samples 增材制造316L不锈钢样品辐射后分析与比较

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70043

C. A. Sumanariu, C. G. Amza

引用次数: 0

Enhancing Air Compressor Fault Diagnosis: A Comparative Study of GPT-2 and Traditional Machine Learning Models 增强空压机故障诊断：GPT-2与传统机器学习模型的比较研究

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70057

Nima Rezazadeh, Donato Perfetto, Francesco Caputo, Alessandro De Luca

{"title":"Enhancing Air Compressor Fault Diagnosis: A Comparative Study of GPT-2 and Traditional Machine Learning Models","authors":"Nima Rezazadeh, Donato Perfetto, Francesco Caputo, Alessandro De Luca","doi":"10.1002/masy.70057","DOIUrl":"https://doi.org/10.1002/masy.70057","url":null,"abstract":"This study investigates the application of GPT-2, a transformer-based model, for fault diagnosis in reciprocating air compressors, highlighting its ability to capture complex patterns in acoustic signals. Two approaches are compared: the first involves extracting time, frequency, and complexity-based features and classifying them using traditional machine learning models, with a narrow neural network achieving the best performance. The second approach reformulates these features as sequential data for GPT-2, which, through meticulous hyperparameter optimization, delivered superior diagnostic accuracy. Additionally, SHapley Additive exPlanations analysis was employed to enhance model interpretability by identifying the most influential features, providing valuable insights into the fault diagnosis process. While GPT-2 demonstrated notable performance gains over conventional models, it required a more precise hyperparameter tuning. This study offers valuable insights into the application of large language models for classifying damaged mechanical systems.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/masy.70057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308778","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

An Adaptable 3D-Printed Model Used for the Production of Monitoring Devices of Dog Articulation Health 用于生产狗关节健康监测装置的适应性3d打印模型

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70047

Maria-Roxana Marinescu, Ovidiu Mărculescu, Octavian Buiu, Octavian Narcis Ionescu

引用次数: 0

Iron Oxides on Waste Steel Slags as Catalyst for the Transfer Hydrogenation of Nitrobenzene Using iso-Propanol as Hydrogen Source 废钢渣上氧化铁催化异丙醇为氢源的硝基苯转移加氢

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70038

Darya Nefedova, Matilda Mali, Ernesto Mesto, Emanuela Schingaro, Carlo Porfido, Piero Mastrorilli, Maria Michela Dell'Anna

引用次数: 0

Determining The Quality Of Composite Structures Made In Ultrasonic Field By Infrared Thermal Imaging 利用红外热成像技术测定超声场复合材料结构的质量

Macromolecular Symposia Pub Date : 2025-06-18 DOI: 10.1002/masy.70052

Vili Pasare, Dan Nitoi, Constantin Opran, Augustin Semenescu, Oana Chivu, Constantin Dumitrascu, Catalina Enache, Anda Cringureanu

{"title":"Determining The Quality Of Composite Structures Made In Ultrasonic Field By Infrared Thermal Imaging","authors":"Vili Pasare, Dan Nitoi, Constantin Opran, Augustin Semenescu, Oana Chivu, Constantin Dumitrascu, Catalina Enache, Anda Cringureanu","doi":"10.1002/masy.70052","DOIUrl":"https://doi.org/10.1002/masy.70052","url":null,"abstract":"Composite structures represent at the present time and will represent even more in the future a field of study both theoretically and practically of the utmost importance taking into account strategic or economic applications of great importance. The composite structures made by depositing several layers of resin and sand (1….3 mm) on a cylindrical metal support represent applications used in the industry to manufacture the tractor rollers of the conveyor belts, the rollers from the brake stands for inspection of automobiles and different others composite structures. This type of structures subject to high tangential and shearing forces must have a high durability over time because changing them is very difficult. Research presents, an attempt to improve the quality of these structures by depositing and solidifying them in an ultrasonic field. Ultrasonic vibrations have multiple properties, including improving the adhesion between the layers of composite structures, uniforming the deposits and shortening the resin cross-linking time. Research presents the FEM simulation of vibration modes for the ultrasonic transducer used in experimental new technology of composite structure manufacturing. The structure made is subjected to a control by infrared thermography in order to observe possible defects and to compare it with traditional technology.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0