Advanced Engineering Forum最新文献_第2页

The Effect of Electrospinning Parameters on the Electrospun Polybutylene Adipate Co-Terephthalate (PBAT) Biodegradable Scaffold 电纺丝参数对电纺丝聚己二酸丁二醇酯（PBAT）生物可降解支架的影响

Advanced Engineering Forum Pub Date : 2024-01-12 DOI: 10.4028/p-wxpr7i

Zulaikha Zulkifli, Tan Jun Jie, A. Rusli, Zuratul Ain Abdul Hamid

{"title":"The Effect of Electrospinning Parameters on the Electrospun Polybutylene Adipate Co-Terephthalate (PBAT) Biodegradable Scaffold","authors":"Zulaikha Zulkifli, Tan Jun Jie, A. Rusli, Zuratul Ain Abdul Hamid","doi":"10.4028/p-wxpr7i","DOIUrl":"https://doi.org/10.4028/p-wxpr7i","url":null,"abstract":"Electrospinning is a cost-effective and versatile technique to fabricate continuous fibers ranging from submicron diameter to nanometer diameter. Polybutylene adipate-co-terephthalate (PBAT) has been investigated as a fibrous scaffold because of its low crystallinity, rapid biodegradability, and excellent mechanical properties, particularly for its high toughness and flexibility. However, the potential of the PBAT fibrous scaffold for medical purposes is still limited. PBAT blends with biocompatible polymers have been developed and investigated for tissue engineering applications. Herein, the preliminary research examines the processability of neat PBAT as a fibrous scaffold by varying several electrospinning processing parameters, such as solution concentration, voltage, flow rate, and tip to collector distance. The aim is to obtain continuous, smooth, and bead-free fibers. The electrospun fibers were examined using a scanning electron microscope (SEM) to determine its diameters. The optimum parameters for obtaining a continuous, bead-free PBAT fibrous scaffold were 20% w/v concentration, 19 kV voltage, 2 mL/h flow rate, and a 15 cm distance.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"54 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139533165","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

Study of the Dynamic Behavior of a DSTATCOM Installed in a Distribution Network in Case of Single and Multiphase Short Circuit 配电网络中安装的 DSTATCOM 在单相和多相短路情况下的动态行为研究

Advanced Engineering Forum Pub Date : 2024-01-12 DOI: 10.4028/p-39dswh

Hassane Ousseyni Ibrahim, F. Fifatin, Arouna Oloulade

引用次数: 0

Additive Manufacturing of Halochromic Polylactic Acid (PLA) 变色聚乳酸（PLA）的添加剂制造

Advanced Engineering Forum Pub Date : 2024-01-12 DOI: 10.4028/p-asnd6w

Qi Hua Chan, Muhammad Zulkarnain Zamri, A. Rusli, Zuratul Ain Abdul Hamid, Muhammad Khalil Abdullah, M. Shafiq, Ku Marsilla Ku Ishak

{"title":"Additive Manufacturing of Halochromic Polylactic Acid (PLA)","authors":"Qi Hua Chan, Muhammad Zulkarnain Zamri, A. Rusli, Zuratul Ain Abdul Hamid, Muhammad Khalil Abdullah, M. Shafiq, Ku Marsilla Ku Ishak","doi":"10.4028/p-asnd6w","DOIUrl":"https://doi.org/10.4028/p-asnd6w","url":null,"abstract":"With increasing concerns regarding plastic waste and pollution, researchers have been looking to develop advanced materials from biodegradable plastics. This study features a halochromic biodegradable polymer produced using additive manufacturing. The purpose of this research is to fabricate halochromic polylactic acid (PLA) filaments and assess its halochromic behaviour, mechanical and chemical properties of the 3D printed PLA specimens. PLA/polyethylene glycol (PEG)/bromocresol purple (BCP) compound was prepared and added in extrusion to produce a 3D printing filament. Dumbbell-shaped and rectangular specimens were fabricated from the filament through 3D printing. The halochromic responsiveness and colour reversibility were tested by exposing the samples to liquid and vaporized hydrochloric acid (strong acid), acetic acid (weak acid) and ammonia (strong alkali). The tensile properties, fracture surface morphology and chemical species of the specimens were tested and analyzed through tensile test, scanning electron microscopy (SEM) and Fourier Transform Infrared (FTIR) spectroscopy. The halochromic responsiveness shows obvious colour changes from yellow to blue when exposed to strong alkali. The tensile strength and modulus were found to be higher in comparison to plasticized PLA but the elongation at break was lower. SEM morphology show brittle fracture characteristics in the printed specimens. Overall, the 3D printed halochromic PLA specimens show promising results and have proven their functionality as pH sensors which offers wide applications in many industries such as medical, environmental and packaging.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"48 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139533211","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

Advanced Engineering Forum Vol. 51 高级工程论坛》第 51 卷

Advanced Engineering Forum Pub Date : 2024-01-12 DOI: 10.4028/b-yilme8

Mikkel K. Kragh, D. Nedelcu, K. A. Razak

引用次数: 0

Innovative Engineering Solutions for Short Neutral Section Maintenance Reduction in Railway Overhead Lines 减少铁路架空线路中性短节维护的创新工程解决方案

Advanced Engineering Forum Pub Date : 2024-01-12 DOI: 10.4028/p-0kmhu2

Ishant Jain, Raghav R. Upasani

{"title":"Innovative Engineering Solutions for Short Neutral Section Maintenance Reduction in Railway Overhead Lines","authors":"Ishant Jain, Raghav R. Upasani","doi":"10.4028/p-0kmhu2","DOIUrl":"https://doi.org/10.4028/p-0kmhu2","url":null,"abstract":"This work addresses the challenges associated with the development of short neutral sections (SNS) for overhead lines of high-speed moving trains. A crucial function of a short neutral section is to provide electrical isolation between the different phases of AC traction. These sections are typically located in proximity to the traction substation and sectioning posts. The current SNS design presents several issues, including pantograph arcing, wear and tear of the overhead line system, and the need for manual rotation during periodic maintenance. To address these challenges TRIZ is used, a problem-solving methodology that leverages inventive principles to generate innovative solutions. The work outlines the use of several TRIZ tools and techniques, including the Interaction Matrix, Functional Analysis, Function-Body Diagram (FBD), Trimming, and the Contradiction Matrix [1]. With the application of these tools, the author presents several potential solutions for improving the SNS design to eliminate periodic maintenance and services. One proposed solution involves the use of a segmented overhead line system with an insulating cylinder-shaped discrete insulator to ensure smooth contact of the pantograph. Another solution involves the use of a twisted strip-based insulator to replace linear motion with rotating movement, eliminating the need for manual rotation. The work emphasizes the importance of considering various factors, such as design, material, wear rate, maintenance, and creepage distance, when evaluating the feasibility of these solutions. By leveraging TRIZ to generate innovative solutions, the author demonstrates the potential of this methodology to drive innovation and overcome complex challenges in the development of short neutral sections for high-speed rails.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":" 44","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139624881","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

Numerical Investigation of Two Methods to Reduce the Settlement of a Light-Weight Highway Embankment on Soft Soils 减少软土上轻质公路路堤沉降的两种方法的数值研究

Advanced Engineering Forum Pub Date : 2024-01-12 DOI: 10.4028/p-g4ojrn

S. Louadj, Chahinez Nateche

引用次数: 0

Application of Active and Passive Treatment of Acid Mine Drainage to Comply with the Threshold Parameter of Coal Mining Wastewater 应用主动和被动方法处理酸性矿井排水以符合采煤废水的阈值参数

Advanced Engineering Forum Pub Date : 2024-01-12 DOI: 10.4028/p-g8i2qy

Ihsan Noor, Karina Shella Putri, Ilham Fauzi, Isra Mursyidi, Reza Chandra Nugraha, Faisal Adnan Hidayat, Pipit Helda Yuliani, Suwondo Suwondo, Rizali Rakhman, Elisa Weber Siregar

{"title":"Application of Active and Passive Treatment of Acid Mine Drainage to Comply with the Threshold Parameter of Coal Mining Wastewater","authors":"Ihsan Noor, Karina Shella Putri, Ilham Fauzi, Isra Mursyidi, Reza Chandra Nugraha, Faisal Adnan Hidayat, Pipit Helda Yuliani, Suwondo Suwondo, Rizali Rakhman, Elisa Weber Siregar","doi":"10.4028/p-g8i2qy","DOIUrl":"https://doi.org/10.4028/p-g8i2qy","url":null,"abstract":"Most of the coal mining in Indonesia that uses the open pit mining method faces serious problems, namely the treatment of acid mine drainage. This constitutes a relatively large volume of wastewater, especially in areas that have rainfall in the range of 2000–4000 mm yearly. Acid mine drainage as acidic wastewater formed during excavation cannot be avoided due to the oxidation process during overburden removal. The acidic wastewater that has formed must be managed strictly and appropriately prior to being released into public waters. There are two methods of treating acid mine wastewater, namely active and passive treatments. Active treatment is generally used more frequently during operations, considering the time, effort, and costs; however, when entering the mine closure period, natural processes must be used at lower costs. Undertaking passive treatment in this area has shown a reduction in the chemical materials used and has enabled a greater amount of wastewater to be managed. The purpose of this research is to describe the active and passive treatment processes in the management of acid mine drainage and to analyze the results of passive treatment in preparation for the mine closure stage. Development of passive treatment by swampy forest system can reduce cost of treatment, naturally process and more environment friendlier by reducing the quicklime materials.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"5 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139532571","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

Solar Greenhouse Drying Kinetics Efficiency of Hydroxide Sludge in Marrakesh, Morocco 摩洛哥马拉喀什氢氧化物污泥的太阳能温室干燥动力学效率

Advanced Engineering Forum Pub Date : 2024-01-12 DOI: 10.4028/p-bmu3yr

Azeddine Fantasse, Lakhal El Khadir, Bougayr El Houssayne, A. Idlimam

引用次数: 0

Impact of Xanthan Gum on Stability and Rheological Properties of Multiple Emulsions Type Water-in-Oil-in-Water 黄原胶对油包水多乳液型稳定性及流变性能的影响

Advanced Engineering Forum Pub Date : 2023-09-06 DOI: 10.4028/p-TuB9Ws

Amira Aguenarous, Larbi Hammadi, Nassima Moussaoui-Khedam

{"title":"Impact of Xanthan Gum on Stability and Rheological Properties of Multiple Emulsions Type Water-in-Oil-in-Water","authors":"Amira Aguenarous, Larbi Hammadi, Nassima Moussaoui-Khedam","doi":"10.4028/p-TuB9Ws","DOIUrl":"https://doi.org/10.4028/p-TuB9Ws","url":null,"abstract":"The aim of this study was to improve the stability and rheological properties of water-in-oil-in-water (W/O/W) multiple emulsions containing 30 wt% paraffin oil, and 4 wt% polyglycerol-3-polycinoleate (PGPR) as a lipophilic surfactant. This was done by adding different concentrations of xanthan gum (GX) and the hydrophilic surfactants (Polyoxyethylene (80) sorbitan monooleate (Tween® 80), poloxamer 407(Lutrol® F127) using the emulsification in a two-steps process. The stability of the W/O/W multiple emulsions was analyzed over one-month storage period using physicochemical and rheological measurements. An excellent structure appeared with 0.175 wt% of xanthan gum in the outer aqueous phase and 1 wt% of Tween® 80. The modified Cross model was successfully applied to fit the flow curves of multiple W/O/W emulsions at different concentrations of xanthan gum. The incorporation of xanthan gum in a concentration range of 0.05-0.175 wt% induced an increase in the yield stress, in the zero-shear rate viscosity, and in the infinite shear rate viscosity of the multiple emulsions. The study also showed that adding xanthan gum in a concentration range of 0.05-0.175 wt% to W/O/W emulsions caused an increase in the viscosity of the system in the Newtonian regime and viscoelastic behavior.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"5 1","pages":"1 - 15"},"PeriodicalIF":0.0,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75715053","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

Two Elements Orthogonally Placed UWB-MIMO for RADAR, Satellite and Terrestrial Communications 用于雷达、卫星和地面通信的双元素正交放置UWB-MIMO

Advanced Engineering Forum Pub Date : 2023-09-06 DOI: 10.4028/p-GCwz1F

Manish Deshmukh, Abhijeet Agrawal, S. K. Gupta, Soma Das

引用次数: 0