Due to escalating labor costs and the conclusion of the demographic dividend in China, prefabricated construction has rapidly advanced, with coupler grouting material playing a pivotal role in these structures. The optimal Ordinary Portland Cement (OPC) to Sulphoaluminate Cement (SAC) mass ratio of 9:1 was established for the material of grouting by formulating the material of grouting through combined use of OPC and SAC in a mass ratio of 9:1 and assessing the composite’s strength, fluidity, and setting time. Subsequent controlled experiments determined the optimal water-to-binder and binder-to-sand ratios to be 0.26 and 1:1, respectively. Using orthogonal experimental design, the ideal mix of mineral additives was identified. A detailed range and variance analysis determined the optimal mass ratios: 3% silica fume, 7% slag powder, and 5% fly ash. Further experimentation with polycarboxylate water-reducer, organosilicon defoamer, and UEA expanding agent in single admixture trials led to the selection of the most effective dosages: water-reducer at 0.3%, defoamer at 0.05%, and UEA expanding agent between 0.03% and 0.05%, meeting the standard requirements for grouting materials.
{"title":"Preparation of Reinforcement Coupler Grouting Material Based on the Orthogonal Design","authors":"Hai-You Shen, Xi-Wen Zhang, Peng Zhao, Gengle Liu, Wei-Xing Hou, Zi-Quan Zhai, Tai-Zhi Xiang","doi":"10.1166/sam.2024.4683","DOIUrl":"https://doi.org/10.1166/sam.2024.4683","url":null,"abstract":"Due to escalating labor costs and the conclusion of the demographic dividend in China, prefabricated construction has rapidly advanced, with coupler grouting material playing a pivotal role in these structures. The optimal Ordinary Portland Cement (OPC) to Sulphoaluminate Cement (SAC)\u0000 mass ratio of 9:1 was established for the material of grouting by formulating the material of grouting through combined use of OPC and SAC in a mass ratio of 9:1 and assessing the composite’s strength, fluidity, and setting time. Subsequent controlled experiments determined the optimal\u0000 water-to-binder and binder-to-sand ratios to be 0.26 and 1:1, respectively. Using orthogonal experimental design, the ideal mix of mineral additives was identified. A detailed range and variance analysis determined the optimal mass ratios: 3% silica fume, 7% slag powder, and 5% fly ash. Further\u0000 experimentation with polycarboxylate water-reducer, organosilicon defoamer, and UEA expanding agent in single admixture trials led to the selection of the most effective dosages: water-reducer at 0.3%, defoamer at 0.05%, and UEA expanding agent between 0.03% and 0.05%, meeting the standard\u0000 requirements for grouting materials.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141057901","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 study of AC and DC electrical conductivity is crucial for understanding the behavior of charge carriers within materials and their mobility. Ethyl cellulose (EC) stands out among cellulose ethers due to its favorable electrical, mechanical, and weathering properties. Poly Methyl Methacrylate (PMMA) is a thermoplastic known for its rigidity, transparency, and outdoor durability, making it a valuable material. Despite being insulating materials, both EC and PMMA exhibit limited free charge carriers and low mobility. In this research, AC and DC electrical properties of Ethyl Cellulose (EC), Poly Methyl Methacrylate (PMMA), and their blends doped with tetrahydrofuran (THF) film were investigated using isothermal evaporation techniques. The investigation focused on the effects of temperature, electric field, and frequency on electrical conduction mechanisms. Measurements were conducted across frequencies ranging from 1 KHz to 1 MHz at temperatures between 323 K and 373 K. Results indicate that AC electrical conductivity of Ethyl Cellulose (EC), Poly Methyl Methacrylate (PMMA), and their blend (EC/PMMA) increases with higher frequencies of the applied electric field. Meanwhile, DC electrical conductivity of Ethyl Cellulose (EC), Poly Methyl Methacrylate (PMMA), and their blend (EC/PMMA) rises with increasing temperature. X-ray diffraction (XRD) analysis further supports these conductivity changes in the blend.
{"title":"Investigation of AC and DC Electrical Conductivity in Ethyl Cellulose (EC) and Poly Methyl Methacrylate (PMMA) Polyblends","authors":"Kajal Sirtawar, Gajanan Lamdhade, Kishor Raulkar, Saeed Alqaed, Jawed Mustafa, Shahid Husain","doi":"10.1166/sam.2024.4690","DOIUrl":"https://doi.org/10.1166/sam.2024.4690","url":null,"abstract":"The study of AC and DC electrical conductivity is crucial for understanding the behavior of charge carriers within materials and their mobility. Ethyl cellulose (EC) stands out among cellulose ethers due to its favorable electrical, mechanical, and weathering properties. Poly Methyl\u0000 Methacrylate (PMMA) is a thermoplastic known for its rigidity, transparency, and outdoor durability, making it a valuable material. Despite being insulating materials, both EC and PMMA exhibit limited free charge carriers and low mobility. In this research, AC and DC electrical properties\u0000 of Ethyl Cellulose (EC), Poly Methyl Methacrylate (PMMA), and their blends doped with tetrahydrofuran (THF) film were investigated using isothermal evaporation techniques. The investigation focused on the effects of temperature, electric field, and frequency on electrical conduction mechanisms.\u0000 Measurements were conducted across frequencies ranging from 1 KHz to 1 MHz at temperatures between 323 K and 373 K. Results indicate that AC electrical conductivity of Ethyl Cellulose (EC), Poly Methyl Methacrylate (PMMA), and their blend (EC/PMMA) increases with higher frequencies of the\u0000 applied electric field. Meanwhile, DC electrical conductivity of Ethyl Cellulose (EC), Poly Methyl Methacrylate (PMMA), and their blend (EC/PMMA) rises with increasing temperature. X-ray diffraction (XRD) analysis further supports these conductivity changes in the blend.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141034807","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}
Mohd. Farhan Khan, Jawed Mustafa, Faez Qahtani, Khalid Umar, Hasan M. H. Muhaisen, M. M. Abdullah, Mohammad Luqman
The research presented here describes the development of membranes made of polymeric materials with unique cobalt(II) complexes to identify nitrate anions in water. The authors of the study precisely coordinated cobalt(II) ions with a neutral tetradentate ligand known as N,N-Ethylene bis(Salicylideneaminato) to develop an efficient anion-binding carrier with nitrate sensitivity. Good nitrate specificity was accomplished by incorporating these Co(II) complexes onto membranes alongside the plasticizer dibutyl phthalate (DBP). The improved Co(II)-based sensors achieved near-Nernstian response slopes throughout a large linear detecting span of 5.0×10−6 to 1.0×10−1 M nitrate, retained functionality from pH 3 to 12, and responded quickly in about 15 seconds. Potentiometric sensitivity factor analyses revealed that the fabricated Co(II) sensor membrane had a higher sensitivity for nitrate compared to more conventional ions. In general, this study highlights the potential of customized Co(II) complexes incorporated into polymeric membranes to be selective and efficient potentiometric sensors for detecting nitrate anions in water bodies. It serves as a foundation for developing enhanced nitrate detection systems for use in important environmental as well as health monitoring processes.
{"title":"Inorganic Nitrate Determination Employing Co(II) Complex Potentiometry","authors":"Mohd. Farhan Khan, Jawed Mustafa, Faez Qahtani, Khalid Umar, Hasan M. H. Muhaisen, M. M. Abdullah, Mohammad Luqman","doi":"10.1166/sam.2024.4672","DOIUrl":"https://doi.org/10.1166/sam.2024.4672","url":null,"abstract":"The research presented here describes the development of membranes made of polymeric materials with unique cobalt(II) complexes to identify nitrate anions in water. The authors of the study precisely coordinated cobalt(II) ions with a neutral tetradentate ligand known as N,N-Ethylene\u0000 bis(Salicylideneaminato) to develop an efficient anion-binding carrier with nitrate sensitivity. Good nitrate specificity was accomplished by incorporating these Co(II) complexes onto membranes alongside the plasticizer dibutyl phthalate (DBP). The improved Co(II)-based sensors achieved near-Nernstian\u0000 response slopes throughout a large linear detecting span of 5.0×10−6 to 1.0×10−1 M nitrate, retained functionality from pH 3 to 12, and responded quickly in about 15 seconds. Potentiometric sensitivity factor analyses revealed that the fabricated\u0000 Co(II) sensor membrane had a higher sensitivity for nitrate compared to more conventional ions. In general, this study highlights the potential of customized Co(II) complexes incorporated into polymeric membranes to be selective and efficient potentiometric sensors for detecting nitrate anions\u0000 in water bodies. It serves as a foundation for developing enhanced nitrate detection systems for use in important environmental as well as health monitoring processes.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141049893","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}
Rupali Chavan, Sarfraj Mujawar, Vishal Dawkar, Vishalkumar R. More, Nilesh Pawar, Rahul Patil, Jyoti Jadhav, Jawed Mustafa, Basrat Jameel, Hasan M. H. Muhaisen, Ayeda Y. A. Mohammed, Ashok Chougale
Growing industrialization is contributing to the worsening shortage of potable water in society. Consequently, wastewater treatment and dye degradation become the foremost aim to overcome this problem. Magnetic nanoparticles (MNPs) emerged as an efficient tool to overcome the problem of wastewater treatment. Easy recovery of the MNPs reduces the operational cost of the reaction. Therefore, in the current study simple, cheap, green, and highly proficient synthesis methodology for the magnetically recoverable cobalt ferrite is reported. The X-ray diffraction spectroscopy (XRD) and Fourier transform infrared spectroscopy (FTIR) confirm the crystalline structure and functional group on the synthesized nanoparticles. The elemental composition, surface morphology, and surface area were investigated by Energy-dispersive X-ray spectroscopy (EDS), Field emission scanning electron microscopy (FESEM), and Brunauer-Emmett-Teller (BET) analysis. The Photo-Fenton process was used to check the catalytic activity of the prepared CoFe2O4 nanoparticles (NPs). The effect of the various experimental parameters like pH (3–9), catalyst dosage (50–200 mg/L), H2O2 dosage (5–20 mM), and varied dye (methylene blue) concentration (0.05–0.2 mM) on catalytic performance were studied. According to this investigation, 90% degradation of the methylene blue was achieved in just 90 minutes using the assynthesized catalyst. The catalyst showed 76.91% of the dye degradation even after 4 consecutive cycles; it suggests the admirable stability of the catalyst during the reaction. The robustness of the CoFe2O4 NPs makes it potential candidate for the waste water treatment.
{"title":"Enhanced Photodegradation of Methylene Blue Using Reusable Cobalt Ferrite Nanocomposites","authors":"Rupali Chavan, Sarfraj Mujawar, Vishal Dawkar, Vishalkumar R. More, Nilesh Pawar, Rahul Patil, Jyoti Jadhav, Jawed Mustafa, Basrat Jameel, Hasan M. H. Muhaisen, Ayeda Y. A. Mohammed, Ashok Chougale","doi":"10.1166/sam.2024.4689","DOIUrl":"https://doi.org/10.1166/sam.2024.4689","url":null,"abstract":"Growing industrialization is contributing to the worsening shortage of potable water in society. Consequently, wastewater treatment and dye degradation become the foremost aim to overcome this problem. Magnetic nanoparticles (MNPs) emerged as an efficient tool to overcome the problem\u0000 of wastewater treatment. Easy recovery of the MNPs reduces the operational cost of the reaction. Therefore, in the current study simple, cheap, green, and highly proficient synthesis methodology for the magnetically recoverable cobalt ferrite is reported. The X-ray diffraction spectroscopy\u0000 (XRD) and Fourier transform infrared spectroscopy (FTIR) confirm the crystalline structure and functional group on the synthesized nanoparticles. The elemental composition, surface morphology, and surface area were investigated by Energy-dispersive X-ray spectroscopy (EDS), Field emission\u0000 scanning electron microscopy (FESEM), and Brunauer-Emmett-Teller (BET) analysis. The Photo-Fenton process was used to check the catalytic activity of the prepared CoFe2O4 nanoparticles (NPs). The effect of the various experimental parameters like pH (3–9), catalyst\u0000 dosage (50–200 mg/L), H2O2 dosage (5–20 mM), and varied dye (methylene blue) concentration (0.05–0.2 mM) on catalytic performance were studied. According to this investigation, 90% degradation of the methylene blue was achieved in just 90 minutes using\u0000 the assynthesized catalyst. The catalyst showed 76.91% of the dye degradation even after 4 consecutive cycles; it suggests the admirable stability of the catalyst during the reaction. The robustness of the CoFe2O4 NPs makes it potential candidate for the waste water treatment.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141028768","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}
A. Alsukaibi, Salman Khan, Mohd Wajid Ali Khan, Zeeshan Rafi, Ahmed Al-Otaibi, A. Alshamari, Kirtanjot Kaur, L. Mechi, F. Alimi, Eida M. Alshammari, Ramendra Pati Pandey, Ahmad Umar, Saheem Ahmad
Nanotechnology, an interdisciplinary field that merges physics, chemistry, and biology, has emerged as a catalyst for innovation, offering far-reaching implications across various scientific disciplines. Gold nanoparticles (GNPs), with their unique physicochemical properties and biocompatibility, have become a focal point in this technological revolution. This research delves into the eco-friendly synthesis of gold nanoparticles using Vigna unguiculata seed extract, a botanical resource known for its rich phytochemical composition. The study investigates the antiglycation activities of these nanoparticles, drawing insights from existing literature. The synthesis process involves the reduction of gold ions by the bioactive compounds present in the Vigna unguiculata seed extract (VuS), leading to the formation of Vigna unguiculata derived GNPs (V-GNPs). Comprehensive characterization techniques, including UV-Vis spectroscopy and transmission electron microscopy, were employed to confirm the stability, size, and shape of the synthesized nanoparticles. The research aligns with recent studies suggesting the potential of gold nanoparticles in mitigating glycation-related disorders. Glycation is a biochemical process implicated in various health complications, particularly diabetes. The antiglycation properties of V-GNPs, as revealed in this study, present an intriguing avenue for managing diabetes and associated complications. The unique composition of V-GNPs, coupled with their promising antiglycation properties, underscores their potential as effective therapeutic agents in the fight against diabetes and other glycation-related disorders. This research not only contributes to the existing body of knowledge but also opens up new possibilities for the application of V-GNPs in the realm of nanomedicine.
{"title":"Eco-Synthesis of Gold Nanoparticles Using Vigna unguiculata Seed Extract: A Leap in the Direction of Antiglycation Remedies","authors":"A. Alsukaibi, Salman Khan, Mohd Wajid Ali Khan, Zeeshan Rafi, Ahmed Al-Otaibi, A. Alshamari, Kirtanjot Kaur, L. Mechi, F. Alimi, Eida M. Alshammari, Ramendra Pati Pandey, Ahmad Umar, Saheem Ahmad","doi":"10.1166/sam.2024.4671","DOIUrl":"https://doi.org/10.1166/sam.2024.4671","url":null,"abstract":"Nanotechnology, an interdisciplinary field that merges physics, chemistry, and biology, has emerged as a catalyst for innovation, offering far-reaching implications across various scientific disciplines. Gold nanoparticles (GNPs), with their unique physicochemical properties and biocompatibility,\u0000 have become a focal point in this technological revolution. This research delves into the eco-friendly synthesis of gold nanoparticles using Vigna unguiculata seed extract, a botanical resource known for its rich phytochemical composition. The study investigates the antiglycation activities\u0000 of these nanoparticles, drawing insights from existing literature. The synthesis process involves the reduction of gold ions by the bioactive compounds present in the Vigna unguiculata seed extract (VuS), leading to the formation of Vigna unguiculata derived GNPs (V-GNPs). Comprehensive\u0000 characterization techniques, including UV-Vis spectroscopy and transmission electron microscopy, were employed to confirm the stability, size, and shape of the synthesized nanoparticles. The research aligns with recent studies suggesting the potential of gold nanoparticles in mitigating glycation-related\u0000 disorders. Glycation is a biochemical process implicated in various health complications, particularly diabetes. The antiglycation properties of V-GNPs, as revealed in this study, present an intriguing avenue for managing diabetes and associated complications. The unique composition of V-GNPs,\u0000 coupled with their promising antiglycation properties, underscores their potential as effective therapeutic agents in the fight against diabetes and other glycation-related disorders. This research not only contributes to the existing body of knowledge but also opens up new possibilities for\u0000 the application of V-GNPs in the realm of nanomedicine.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141037295","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}
Mahes R. Walle, Snehal Kamble, Baliram Vibhute, Rajendra Pawar, Rajita Ingle, Mohamed H. Mahmoud, Nasser M. Abd El-salam, H. Fouad
This study presents a novel and environmentally sustainable approach for the one-pot multicomponent green synthesis of pyrano[2,3-d]pyrimidine dione derivatives. The devised procedure involves a three-component condensation of aldehydes, malononitrile, and barbituric acid, employing a nanomaterial catalyst in the form of cobalt-doped iron tartrate. This catalyst, characterized by its nanoscale dimensions, demonstrates exceptional reusability and water solubility, contributing to its eco-friendly profile. The synthesis is conducted under reflux conditions, optimizing the reaction efficiency. Key attributes of the proposed protocol include the use of a non-toxic, cost-effective, and readily available catalyst. The high atom economy of the reaction signifies minimal waste generation, enhancing the sustainability of the synthetic process. Additionally, the reaction features a short duration, aligning with the principles of efficiency and resource conservation. Notably, the utilization of water as the solvent further enhances the green approach, minimizing the environmental impact. This innovative synthesis protocol not only addresses the growing demand for environmentally conscious methodologies but also showcases the potential for scalable and practical applications in organic synthesis. The integration of a reusable nanomaterial catalyst, coupled with the adoption of water as a solvent, positions this approach as a promising advancement in the pursuit of sustainable and green chemical practices. The study provides valuable insights into the development of efficient and environmentally benign synthetic routes for the production of pyrano[2,3-d]pyrimidine dione derivatives, paving the way for the exploration of greener alternatives in the realm of organic chemistry.
{"title":"Synthesis of Pyrano[2,3-d]Pyrimidine Diones Catalyzed by Cobalt-Doped Iron Tartrate Nanomaterial: A Sustainable and Efficient Approach","authors":"Mahes R. Walle, Snehal Kamble, Baliram Vibhute, Rajendra Pawar, Rajita Ingle, Mohamed H. Mahmoud, Nasser M. Abd El-salam, H. Fouad","doi":"10.1166/sam.2024.4666","DOIUrl":"https://doi.org/10.1166/sam.2024.4666","url":null,"abstract":"This study presents a novel and environmentally sustainable approach for the one-pot multicomponent green synthesis of pyrano[2,3-d]pyrimidine dione derivatives. The devised procedure involves a three-component condensation of aldehydes, malononitrile, and barbituric acid, employing\u0000 a nanomaterial catalyst in the form of cobalt-doped iron tartrate. This catalyst, characterized by its nanoscale dimensions, demonstrates exceptional reusability and water solubility, contributing to its eco-friendly profile. The synthesis is conducted under reflux conditions, optimizing the\u0000 reaction efficiency. Key attributes of the proposed protocol include the use of a non-toxic, cost-effective, and readily available catalyst. The high atom economy of the reaction signifies minimal waste generation, enhancing the sustainability of the synthetic process. Additionally, the reaction\u0000 features a short duration, aligning with the principles of efficiency and resource conservation. Notably, the utilization of water as the solvent further enhances the green approach, minimizing the environmental impact. This innovative synthesis protocol not only addresses the growing demand\u0000 for environmentally conscious methodologies but also showcases the potential for scalable and practical applications in organic synthesis. The integration of a reusable nanomaterial catalyst, coupled with the adoption of water as a solvent, positions this approach as a promising advancement\u0000 in the pursuit of sustainable and green chemical practices. The study provides valuable insights into the development of efficient and environmentally benign synthetic routes for the production of pyrano[2,3-d]pyrimidine dione derivatives, paving the way for the exploration of greener alternatives\u0000 in the realm of organic chemistry.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141052408","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 skin is highly susceptible to friction during labor or outdoor activities, leading to blisters, bleeding, pain, and infection. In this paper, a butyl-cyanoacrylate/polymethylmethacrylate (504/PMMA) composite was developed as a protectant to prevent skin damage caused by external friction. The composite could rapidly solidify on the skin surface, forming a strong polymer film. Results from a rat model showed that the 504/PMMA composite effectively prevented skin damage and that increasing the proportion of PMMA improved its anti-friction performance. Moreover, the material is biocompatible. In this study, we offered new options for reducing skin friction and blisters, which have potential to practical applications.
{"title":"Evaluation of the Cyanoacrylate/Polymethylmethacrylate Complex as a Protectant to Prevent Skin Friction and Blisters","authors":"Tengfei Wang, Wei Zhang, Jia Wang, Junjie Tan, Wei Wang, Quan Zhang, Liang Xu","doi":"10.1166/sam.2024.4697","DOIUrl":"https://doi.org/10.1166/sam.2024.4697","url":null,"abstract":"The skin is highly susceptible to friction during labor or outdoor activities, leading to blisters, bleeding, pain, and infection. In this paper, a butyl-cyanoacrylate/polymethylmethacrylate (504/PMMA) composite was developed as a protectant to prevent skin damage caused by external\u0000 friction. The composite could rapidly solidify on the skin surface, forming a strong polymer film. Results from a rat model showed that the 504/PMMA composite effectively prevented skin damage and that increasing the proportion of PMMA improved its anti-friction performance. Moreover, the\u0000 material is biocompatible. In this study, we offered new options for reducing skin friction and blisters, which have potential to practical applications.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141049299","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}
As a common building structure, steel frame building is of great significance in seismic design and construction in earthquake areas. However, the traditional steel frame structure is brittle under earthquake, which is prone to buckling instability and serious damage. Therefore, taking the whole construction process as a parameter index, the buckling-restrained brace-steel frame structure is strengthened, and different seismic waves are selected as seismic input to analyze and study its seismic capacity under earthquake action. The research results show that: (1) The steel frame with buckling-restrained braces still has strong seismic toughness when there is a large stiffness loss in the earthquake; (2) The base shear curve of building buckling-restrained brace-steel frame in X direction increases exponentially; (3) Buckling-restrained brace-steel frame has high shear force shared by columns and axes in X direction under strong earthquake, which can effectively realize the function of secondary protection; (4) The short duration of strong earthquake has little influence on the hysteretic energy consumption ratio, while the damage of the long duration of strong earthquake to the building buckling restrained brace-steel frame increases with the increase of strong earthquake duration; (5) Buckling restrained brace-steel frame has good deformability and can adapt to earthquake load through plastic deformation
钢结构建筑作为一种常见的建筑结构，在地震灾区的抗震设计和施工中具有重要意义。然而，传统的钢框架结构在地震作用下比较脆，容易产生屈曲失稳，破坏严重。因此，以整个施工过程为参数指标，对屈曲约束支撑钢框架结构进行加固，并选取不同的地震波作为地震输入，分析研究其在地震作用下的抗震能力。研究结果表明(1) 当地震刚度损失较大时，屈曲约束支撑钢框架仍具有较强的抗震韧性；(2) 建筑屈曲约束支撑钢框架在 X 向的基底剪力曲线呈指数增长；(3) 屈曲约束支撑钢框架在强震下 X 向柱轴分担的剪力较大，可有效实现二级保护功能；(4）短历时强震对滞回耗能比影响较小，而长历时强震对建筑屈曲约束支撑钢架的破坏随强震历时的增加而增大；（5）屈曲约束支撑钢架具有良好的变形能力，可通过塑性变形适应地震荷载。
{"title":"Evaluation Method for Seismic Toughness of Steel Frame Buildings with Buckling Constraint Braces Based on the Whole Construction Process","authors":"Liang-Jin Chen","doi":"10.1166/sam.2024.4684","DOIUrl":"https://doi.org/10.1166/sam.2024.4684","url":null,"abstract":"As a common building structure, steel frame building is of great significance in seismic design and construction in earthquake areas. However, the traditional steel frame structure is brittle under earthquake, which is prone to buckling instability and serious damage. Therefore, taking\u0000 the whole construction process as a parameter index, the buckling-restrained brace-steel frame structure is strengthened, and different seismic waves are selected as seismic input to analyze and study its seismic capacity under earthquake action. The research results show that: (1) The steel\u0000 frame with buckling-restrained braces still has strong seismic toughness when there is a large stiffness loss in the earthquake; (2) The base shear curve of building buckling-restrained brace-steel frame in X direction increases exponentially; (3) Buckling-restrained brace-steel frame\u0000 has high shear force shared by columns and axes in X direction under strong earthquake, which can effectively realize the function of secondary protection; (4) The short duration of strong earthquake has little influence on the hysteretic energy consumption ratio, while the damage of\u0000 the long duration of strong earthquake to the building buckling restrained brace-steel frame increases with the increase of strong earthquake duration; (5) Buckling restrained brace-steel frame has good deformability and can adapt to earthquake load through plastic deformation","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141043500","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}
M. Marashdeh, Mamduh J. Aljaafreh, G. Al-Mazaideh, H. Akhdar, Abbas I. Alakhras, Ibrahim F. Alhamarneh
We used an elementary hydrothermal approach to create this NiCoS nanohybrid. Analysis using X-ray diffraction (XRD) verified that the creation of this nanomaterial was successful. The material underwent cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), testing in preparation for its use as a supercapacitor electrode. The innovative aspect of this work was researching how electrodes’ supercapacitor qualities were affected by gamma-irradiation with an average energy of 1.25 MeV. The manufactured samples endured gamma radiation exposure with 5, 10, 15, 25, and 50 kGy dosages. Following 5000 consecutive cycles, the sample subjected to the most significant dose of gamma radiation exhibited the lowest charge transfer resistance, maximum stability, and highest specific capacity of 253 Cg−1. Compared to the non-irradiation sample, the gamma-ray exposed NiCoS (50 kGy) had an 85 s longer discharge duration at a current density of 0.1 Ag−1. These data indicate that gamma radiation has a positive influence on electrode performance rather than a negative one. For this reason, NiCoS may be used as an electrode material for gamma radiation medium supercapacitors.
{"title":"Effect of Gamma-Irradiation on Electrochemical Properties of Nicos for Supercapacitor Application","authors":"M. Marashdeh, Mamduh J. Aljaafreh, G. Al-Mazaideh, H. Akhdar, Abbas I. Alakhras, Ibrahim F. Alhamarneh","doi":"10.1166/sam.2024.4675","DOIUrl":"https://doi.org/10.1166/sam.2024.4675","url":null,"abstract":"We used an elementary hydrothermal approach to create this NiCoS nanohybrid. Analysis using X-ray diffraction (XRD) verified that the creation of this nanomaterial was successful. The material underwent cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), testing in preparation\u0000 for its use as a supercapacitor electrode. The innovative aspect of this work was researching how electrodes’ supercapacitor qualities were affected by gamma-irradiation with an average energy of 1.25 MeV. The manufactured samples endured gamma radiation exposure with 5, 10, 15, 25,\u0000 and 50 kGy dosages. Following 5000 consecutive cycles, the sample subjected to the most significant dose of gamma radiation exhibited the lowest charge transfer resistance, maximum stability, and highest specific capacity of 253 Cg−1. Compared to the non-irradiation sample,\u0000 the gamma-ray exposed NiCoS (50 kGy) had an 85 s longer discharge duration at a current density of 0.1 Ag−1. These data indicate that gamma radiation has a positive influence on electrode performance rather than a negative one. For this reason, NiCoS may be used as an electrode\u0000 material for gamma radiation medium supercapacitors.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141027625","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 key drivers for automotive manufacturers to develop vehicles with decreased weight are the growing requirements for improved fuel efficiency. This endeavor not only tackles the issues related to fuel efficiency but also aligns with the objectives of enhanced recyclability and overall performance of the vehicle, encompassing factors like driving efficiency, braking characteristics, and collision safety. Herein, a successful strategy entails investigating and utilizing lightweight materials with superior performance as substitutes for conventional automotive materials such as cast iron and steel. This article provides a thorough analysis of the lightweight materials that are currently being researched and available for use in the production of next-generation cars. These materials include composites, light alloys, high-strength steel, and other innovative materials. The review covers all aspects of the life cycle of automotive materials, examining their mechanical and physical characteristics, production processes, characterization strategies, and their uses. Both the merits and limitations of these materials are analyzed, leading to a nuanced understanding of suitable scenarios for their application. In anticipation of future challenges, the study suggests that advancements in versatile materials or enhancements in manufacturing and treatment techniques hold promise for overcoming potential obstacles, ultimately facilitating the creation of more capable, safer, durable, and environmentally friendly vehicles.
{"title":"Advanced Lightweight Structural Materials for Automobiles: Properties, Manipulation, and Perspective","authors":"Honghe Guo, Xiaoguang Zhou, Zhenyu Liu","doi":"10.1166/sam.2024.4686","DOIUrl":"https://doi.org/10.1166/sam.2024.4686","url":null,"abstract":"The key drivers for automotive manufacturers to develop vehicles with decreased weight are the growing requirements for improved fuel efficiency. This endeavor not only tackles the issues related to fuel efficiency but also aligns with the objectives of enhanced recyclability and overall\u0000 performance of the vehicle, encompassing factors like driving efficiency, braking characteristics, and collision safety. Herein, a successful strategy entails investigating and utilizing lightweight materials with superior performance as substitutes for conventional automotive materials such\u0000 as cast iron and steel. This article provides a thorough analysis of the lightweight materials that are currently being researched and available for use in the production of next-generation cars. These materials include composites, light alloys, high-strength steel, and other innovative materials.\u0000 The review covers all aspects of the life cycle of automotive materials, examining their mechanical and physical characteristics, production processes, characterization strategies, and their uses. Both the merits and limitations of these materials are analyzed, leading to a nuanced understanding\u0000 of suitable scenarios for their application. In anticipation of future challenges, the study suggests that advancements in versatile materials or enhancements in manufacturing and treatment techniques hold promise for overcoming potential obstacles, ultimately facilitating the creation of\u0000 more capable, safer, durable, and environmentally friendly vehicles.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141043564","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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