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PROCEEDINGS OF 8TH INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS ENGINEERING & TECHNOLOGY (ICAMET 2020)最新文献

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Effect of solvent to matrix weight ratio and stearic acid treatment on the mechanical properties of Poly (methyl methacrylate)/ palm kernel shell composites 溶剂与基质重量比及硬脂酸处理对聚甲基丙烯酸甲酯/棕榈仁壳复合材料力学性能的影响
B. Y. Lim, C. Voon, S. F. Lye, P. Teh
In this study, poly (methyl methacrylate)/palm kernel shell (PMMA/PKS) composites were prepared by solution casting. The effect of solvent to matrix (S/M) weight ratio and stearic acid (SA) treatment on PMMA/PKS composites were studied. PMMA pellets were dissolved and PKS powders were dispersed into acetone, separately. PMMA solution and PKS suspension were then mixed in ultrasonic bath. The mixture was then poured into a glass petri dish to evaporate acetone at room temperature and finally PMMA/PKS composite thin film was obtained. PMMA/PKS composites were characterized by using SEM and were subjected to tensile test. It was found that tensile strength, modulus of elasticity of composite increased but elongation at break decreased with the increasing S/M ratio and with SA treatment. The improvement of the mechanical properties was due to the improved interfacial bonding following the SA treatment and the formation of crystallized PMMA domain in the composite with the increasing S/M ratio. SEM images revealed even fracture surfaces as S/M increased and with the application of SA treatment that indicate better matrix-filler adhesion. It can be concluded that S/M increment and SA treatment improved mechanical properties of PMMA/PKS composite.
采用溶液铸造法制备了聚甲基丙烯酸甲酯/棕榈仁壳(PMMA/PKS)复合材料。研究了溶剂/基质(S/M)质量比和硬脂酸(SA)处理对PMMA/PKS复合材料的影响。PMMA颗粒溶解,PKS粉末分散到丙酮中。PMMA溶液和PKS悬浮液在超声浴中混合。将混合物倒入玻璃培养皿中,在室温下蒸发丙酮,最终得到PMMA/PKS复合薄膜。采用扫描电镜对PMMA/PKS复合材料进行了表征,并进行了拉伸试验。结果表明,随着S/M比的增加和SA处理,复合材料的抗拉强度和弹性模量增加,断裂伸长率下降。力学性能的改善主要是由于SA处理后界面结合得到改善,随着S/M比的增加,复合材料中形成了结晶化的PMMA畴。SEM图像显示,随着S/M的增加和SA处理的应用,断口表面均匀,表明基质与填料的附着力更好。增加S/M和SA处理均能提高PMMA/PKS复合材料的力学性能。
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引用次数: 0
Formation of citizen-centric public service satisfaction model during pandemic crisis in Malaysia: An ideology 马来西亚流行病危机中以公民为中心的公共服务满意度模式的形成:一种意识形态
S. D. M. Wahid, S. Amin, A. J. M. Ali, A. Abdullah
The aim of this study is to produce a citizen-centric public service satisfaction model during the pandemic crisis in Malaysia. To develop the model, this study has gone through exploratory analysis using previous literature. Four components have been proposed that can benefit the supply side in conducting requirement gathering and designing of citizen-centric public service satisfaction model. This study can be useful in conceptual studies analysing the cognitive perspective of citizen satisfaction pertaining to the public administration during the pandemic crisis. This study provides a new integrative model reflecting citizen-centric public service satisfaction during a pandemic crisis. This study provides a new integrative model reflecting citizen-centric public service satisfaction during a pandemic crisis.
本研究的目的是在马来西亚大流行危机期间建立一个以公民为中心的公共服务满意度模型。为了建立模型,本研究利用已有文献进行探索性分析。提出了供给方在进行需求收集和设计以市民为中心的公共服务满意度模型时应考虑的四个要素。这项研究可用于分析大流行危机期间公共行政方面公民满意度的认知视角的概念性研究。本研究提供了一个新的综合模型,反映大流行危机期间以公民为中心的公共服务满意度。本研究提供了一个新的综合模型,反映大流行危机期间以公民为中心的公共服务满意度。
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引用次数: 0
The effectiveness of television in creating awareness towards movement control order (MCO) during Covid-19 2019冠状病毒病期间电视宣传对运动控制秩序(MCO)的有效性
A. R. Ridzuan, A. Luthfia, R. S. Mohideen, S. N. S. Allam, N. A. K. Zamri, A. Zulkarnain, S. Ismail, M. H. Abdullah, R. A. A. W. Puspokusumo
In March 2020, the government had announced for the Movement Control Order due to the outbreak of Covid-19 in Malaysia. COVID-19 is an infectious disease caused by a newly discovered coronavirus. People that infected with COVID-19 will experience mild to moderate respiratory illness and recover without requiring special treatment. As the covid-19 had affected over millions of people across the world, the media have been working overtime in make sure the communities are updated with the news regarding Movement Control Order information to the public. The study aims to identify the effectiveness of media in creating awareness towards the understanding of Movement Control Order (MCO) during Covid-19. The study involves 440 respondents from different backgrounds across Malaysia. The data are collected through Statistical Package of Social Science (SPSS) Version 23. Findings from the SPSS indicated that television has significantly impact on promoting Movement Control Order awareness.
2020年3月,由于新冠肺炎疫情在马来西亚爆发,政府宣布了行动控制令。COVID-19是一种由新发现的冠状病毒引起的传染病。感染COVID-19的人会出现轻度至中度呼吸道疾病,无需特殊治疗即可康复。由于covid-19影响了全球数百万人,媒体一直在加班加点地确保社区向公众提供有关行动控制令信息的最新消息。该研究旨在确定媒体在Covid-19期间提高对运动控制令(MCO)理解的认识方面的有效性。这项研究涉及来自马来西亚各地不同背景的440名受访者。数据是通过社会科学统计软件包(SPSS)第23版收集的。SPSS调查结果表明,电视对提高运动控制秩序意识有显著影响。
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引用次数: 0
Suitable habitat and environmental conditions for successful edible bird nest swiftlet houses 适合的栖息地和环境条件,成功的食用燕窝燕屋
M. Yaacob, W. I. W. Khairy, A. Munirah, A. Nabilah, H. Zulhazman
Many entrepreneurs are very interested to start Edible Bird Nest (EBN) production. However, many of them lack knowledge in suitable habitat and environmental conditions for EBN swiftlets. They suffered losses because they are not concerned about providing the management of the suitable habitat and environmental conditions before building their EBN swiftlet house. This study aimed to identify and establish the list of habitat and environmental conditions for successful of edible bird nest swiftlet ranching. This study comprised of interview questions and field study. Questionnaires were distributed 100 players in EBN industry in Terengganu. For the field study, air and surface temperatures, relative humidity, light intensity, and sound level were recorded in nine EBN swiftlet houses in three different areas, the forested, the coastal and the town areas. From the questionnaires, we found that the most popular area (67%) to build EBN swiftlet houses was the forested area. This was followed by, the coastal area (26.7%) and town area (6.7%). Based on field study results, forested areas were the best and most productive to build EBN swiftlet house. The mean EBN and individual swiftlet population from the different areas were as follows: 78 nests and 263 individuals in forested, 51 nests and 133 individuals in the coastal and 25 nests and 65 individuals in the town area. From the environmental parameters collected it was shown that houses built in the forested area had the most suitable range for swiftlet adaptation. Air and surface temperatures were 31°C, relative humidity was 82%, light intensity 0.16LUX, sound level 50dB (internal) and 65dB (external). The results showed that EBN production was significantly higher in swiftlet houses with suitable habitat and environmental conditions. In the management of swiftlet houses, only suitable habitat and environmental conditions can be assured to be productive and profitable ranching venture swiflet.
许多企业家对开始生产食用燕窝(EBN)非常感兴趣。然而,许多人对黑斑金丝燕的适宜栖息地和环境条件缺乏了解。他们遭受损失的原因是,在建造燕窝之前,他们没有考虑提供合适的栖息地和环境条件的管理。本研究旨在确定和建立可食用燕窝燕窝牧场成功的生境和环境条件清单。本研究由访谈问题和实地调查两部分组成。对登嘉楼地区100名EBN企业进行问卷调查。在野外研究中,记录了森林、沿海和城镇3个不同区域的9个EBN金丝燕舍的空气和地表温度、相对湿度、光照强度和声级。从问卷调查中,我们发现最受欢迎的地区(67%)是森林地区。其次是沿海地区(26.7%)和城镇地区(6.7%)。野外研究结果表明,森林地区是建设燕窝的最佳和最高产地。不同地区的平均种群密度和个体数量分别为:森林地区78个巢263只,沿海地区51个巢133只,城镇地区25个巢65只。从所收集的环境参数来看,建在森林地区的房屋最适合金丝燕的适应范围。空气和地表温度31℃,相对湿度82%,光照强度0.16LUX,声级50dB(内部)和65dB(外部)。结果表明:适宜生境和环境条件的燕舍EBN产量显著高于燕舍;在燕窝的管理中,只有适宜的生境和环境条件才能保证燕窝的高产和盈利。
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引用次数: 3
Effect of processing conditions on the fracture behavior of Al-5Zn-1.5Mg-1.0Mn-0.35Cu alloy fabricated from recycled beverage cans (RBCs) for bumper beam applications 工艺条件对再生饮料罐Al-5Zn-1.5Mg-1.0Mn-0.35Cu合金保险杠梁断裂行为的影响
A. Kazeem, M. Rady, N. Badarulzaman, W. F. W. Ali, M. A. Suhaimi, S. S. Jikan, S. Rahim, S. Sharif
The literature is a deficit of the effect of fractographic and microstructural analyses on the yield strength (δy) of experimental 7xxx alloy fabricated from Recycled Beverage Cans (RBCs). This paper aims at fabricating a novel Al-5Zn-1.5Mg-1Mn-0.35Cu alloy from RBCs and correlate between fractography, microstructures, chemical compositions, and δy with respect to heat treatment (HT) parameters. Both intergranular and intergranular fractures were found predominantly ductile with micro dimples. Prolonged ageing time increased the thickness of boundaries and precipitated free zones (PFZs). Micro-voids and flake-like patterns indicated the formation of secondary phases. Maximum δy of 129 MPa and elongation of 16.3 % were observed in an alloy annealed (o) at 413 °C, artificial aged (T6) at 145 °C, for 6 h. Thus, modifications of HT process has significantly influenced the δy and microstructure of the alloy fabricated from RBCs. Future studies should concentrate on investigating the effect of variations in the wt. % Zn on the mechanical properties.
断裂学和显微组织分析对由回收饮料罐(rbc)制成的7xxx合金的屈服强度(δy)的影响是文献中的缺陷。本文旨在用红血球制备新型Al-5Zn-1.5Mg-1Mn-0.35Cu合金,并研究其断口形貌、显微组织、化学成分和δy与热处理参数的关系。晶间断口和晶间断口均以微韧窝为主。延长时效时间使边界和析出自由区厚度增加。微孔洞和片状图案表明次生相形成。413℃退火(0)、145℃人工时效(T6) 6 h的合金δy最大为129 MPa,伸长率为16.3%。因此,热处理工艺的改变对红血球制备的合金的δy和显微组织有显著影响。今后的研究应集中于研究wt % Zn含量变化对合金力学性能的影响。
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引用次数: 0
Performance evaluation of nano-enhanced coconut oil as sustainable lubricant 纳米增强椰子油作为可持续润滑剂的性能评价
Ibrahim Ogu Sadiq, M. A. Suhaimi, S. Sharif, N. Yusof, K. Park, S. Rahim, N. Alias
Lubricants are used to reduce friction between contacting surfaces, especially involving mechanical parts. There has been considerable effort to develop a lubricant that will aid sustainable process and efficient performance. Because of their environmental friendliness, biodegradability, less toxic, and good lubricity, vegetable oils are considered a better substitute for mineral oils. However, their thermal and oxidative stability of vegetable needs to be improved for efficient lubrication. This research is aimed at developing and performance evaluation of vegetable oil-based nanolubricants with maghemite nanoparticles at different volume concentrations for sustainable lubrication. Maghemite nanolubricants were prepared by dispersion of the maghemite (γFe2O3) nanoparticles into vegetable oil at a different level of inclusions (0.1, 0.2, and 0.3 vol.%). The result indicated an improvement in the thermophysical properties of the nanolubricants with increased concentration, while an increase in temperature decreases their enhancement. The kinematic viscosity of coconut oil is enhanced with an increase of volume fractions that enable them to form a protective thin film under higher temperature operation. At the temperature of 80 °C, an increase of 30.68% was observed in the viscosity of nanolubricant over the pure base oil. The highest thermal conductivity enhancement over the base fluid is 7.33%, corresponding to a ratio of 1.079 times improved performance at a concentration of 0.3 vol.% inclusion over the pure base oil. The tribological properties showed that the wear scar diameter and coefficient of friction decrease with an increase of concentration. Thus making the addition of maghemite nanaoparticles in biolubricants a promising nanolubricant for sustainable machining.
润滑剂用于减少接触面之间的摩擦,特别是涉及机械部件。已经有相当大的努力来开发一种润滑剂,将有助于可持续的过程和高效的性能。植物油具有环保、可生物降解、毒性小、润滑性好等优点,被认为是矿物油的较好替代品。然而,为了有效润滑,它们的热稳定性和氧化稳定性有待提高。本研究旨在开发具有不同体积浓度的磁赤铁矿纳米颗粒的植物油基纳米润滑剂,并对其性能进行评价。将磁赤铁矿(γ - fe2o3)纳米颗粒分散到不同包裹体水平(0.1、0.2和0.3 vol.%)的植物油中,制备了磁赤铁矿纳米润滑剂。结果表明,纳米润滑剂的热物理性能随浓度的增加而改善,而温度的升高会降低其增强效果。椰子油的运动粘度随着体积分数的增加而增强,这使它们能够在更高温度下形成保护薄膜。在80℃的温度下,纳米润滑剂的粘度比纯基础油提高了30.68%。与纯基础油相比,当包合物浓度为0.3 vol.%时,导热系数的最大提高为7.33%,相当于性能提高的1.079倍。摩擦学性能表明,随着浓度的增加,磨痕直径和摩擦系数减小。因此,在生物润滑剂中添加磁铁矿纳米颗粒是一种很有前途的可持续加工纳米润滑剂。
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引用次数: 0
Learning style tendencies based on Fleming’s VARK learning style among TVET students 基于弗莱明VARK学习风格的TVET学生学习风格倾向
N. Razali, F. Ahmad, N. Hamzah, W. Hassan, S. M. Baharudin
This study aims to identify learning style tendencies based on the Fleming’s VARK learning style of TVET students. This study uses a questionnaire approach to assess TVET students’ learning styles based on Fleming’s visual, auditory, writing or reading and kinesthetic learning styles. The study population is technical students of FPTV, UTHM and the selected sample consists of 53 students from various fields namely General Machining (BBA), Welding and Metal Fabrication (BBD), Electrical & Electronics (BBE) and Creative Multimedia (BBF) who took the subject BBD10803 Information Technology in Education at Universiti Tun Hussein Onn Malaysia. The results of this study indicate that the most preferred Fleming’s VARK learning style is a visual learning style.
本研究旨在探讨职业技术教育学生的学习风格倾向。本研究采用问卷调查的方法,以弗莱明的视觉、听觉、写作或阅读和动觉学习风格为基础,评估TVET学生的学习风格。研究人群是FPTV, UTHM的技术学生,选定的样本包括来自不同领域的53名学生,即一般加工(BBA),焊接和金属制造(BBD),电气与电子(BBE)和创意多媒体(BBF),他们参加了马来西亚敦侯赛因大学BBD10803信息技术教育课程。本研究结果表明,学生最喜欢的Fleming 's VARK学习风格是视觉学习风格。
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引用次数: 0
Potential impacts in the conservation of old shophouse towards its heritage values 保育旧店屋对其文物价值的潜在影响
Farrah Atikah binti Saari, M. R. M. Nasir, Sahrudin Mohamed Som, A. Awang, Sudirman Kiffli, I. Marzuki
Efforts in conserving the architectural inheritance of old shophouses are quite challenging due to the condition and age of the buildings nowdays. In Kota Bharu, there are many old shophouse structures and buildings that are left unattended even though the city is still recognized for its unique cultural values. The factors that led to the negligence of these old shophouses are due to the financial problem, lack of awareness in the importance of heritage conservation, decreasing rate in business prospect, no continuity in heritage ownership and business operation. This situation leads to failure in conserving these buildings where some of the old shophouses started to collapse. Thus, this study aims to identify the unique characteristics in the architectural designs and heritage of the old shophouses for the conservational purpose as well as acknowledging the significance of its heritage values. This is a qualitative research that employs structured observation and structured interview methods. The outcomes from the observation method found that the shophouse buildings in Kota Bharu still exhibit its unique design in architectural heritage and the modifications are still minimum. Meanwhile, the research outcomes from the interview method stated a higher percentage of respondents who agree on the significance and importance of the old shophouse’s architectural structure conservation effort. Therefore, the old shophouses have a high potential to be conserved due to their contribution to heritage values. As the outcome, this research could provide an opportunity to the authorized bodies to see its potential to be recognized as a gazetted city or heritage site as well as improving the Cultural Zone area, Kota Bharu.
由于现在的建筑状况和年代,保护老店屋的建筑遗产的工作相当具有挑战性。在哥打巴鲁,有许多古老的店屋结构和建筑无人看管,尽管这座城市仍然以其独特的文化价值而闻名。导致这些老店屋被忽视的原因是由于资金问题,对遗产保护重要性的认识不足,商业前景下降,遗产所有权和商业经营没有连续性。这种情况导致保护这些建筑的失败,一些老店屋开始倒塌。因此,本研究旨在找出旧店屋在建筑设计和遗产方面的独特特点,以达到保育目的,并承认其遗产价值的重要性。这是一项采用结构化观察和结构化访谈方法的定性研究。观察方法的结果发现,Kota Bharu的店屋建筑在建筑遗产中仍然表现出其独特的设计,并且修改仍然很少。同时,访谈法的研究结果表明,更高比例的受访者同意旧店屋建筑结构保护工作的意义和重要性。因此,老店屋具有很高的保护潜力,因为它们具有遗产价值。结果是,这项研究可以为授权机构提供一个机会,看到它被认可为宪报公布的城市或遗产遗址的潜力,以及改善哥打巴鲁文化区地区。
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引用次数: 0
Raised flooring; a traditional designed architectural element as “passive design” system in future building. Case study: Masjid Kampung Laut, Kelantan 活动地板;将传统设计的建筑元素作为“被动设计”系统应用于未来建筑。案例研究:吉兰丹甘榜劳清真寺
N. Amin, M. R. M. Nasir, I. L. H. Ibrahim, M. Khairuddin
Building Industries contributes to a great number of carbon footprint through all these years. Through a proper planning, this industry can reduce the impacts to the earth generally and towards the environment specifically. This study was dedicated to propose an old traditional design found in 400 years building to be reapplied in modern construction as a “passive design” system. Raised timber flooring was commonly applied in South East Asia’s traditional buildings due to the availability of the material and suitability for the climate. Masjid Kampung Laut was chosen as the case study due to its excellent reputation compared to the age period of the building. Till this moment, Masjid Kampung Laut is still function very well and benefit excellently to the community where it was located; Nilam Puri, Kelantan. This study was conducted in qualitative method, involving several types of data collection. The intention of this research whereby proposing towards the architects, designers, developers, engineers, and all the main players in the construction industry to reuse the design element of “raised floor” in modern buildings such as residentials, resorts and hospitality, mosques, retails, transit shelters and terminals, restaurants, schools, office buildings and etc. This revolution in design will at the end push the authorities to consider the design to be used in government buildings, as it also represent our architectural identity, energy sustainable, as well benefits the environment. In conclusion, the traditional architecture element of raised timber flooring could be redesigned and recommercialised to suit the future buildings. This design should be given a chance as it surely can benefit the building itself, the users, and the environment globally.
这些年来,建筑工业产生了大量的碳足迹。通过适当的规划,该行业可以减少对地球和环境的影响。本研究致力于提出一个古老的传统设计,在400年的建筑中发现,作为一个“被动设计”系统,在现代建筑中重新应用。由于材料的可用性和对气候的适应性,凸起的木地板通常应用于东南亚的传统建筑中。Kampung Laut清真寺被选为案例研究,因为与建筑的年代相比,它具有良好的声誉。直到现在,甘榜劳清真寺仍然很好地发挥着作用,并为它所在的社区带来了巨大的利益;Nilam Puri,吉兰丹。本研究采用定性方法,涉及多种类型的数据收集。这项研究的目的是向建筑师、设计师、开发商、工程师和建筑行业的所有主要参与者建议,在住宅、度假村和酒店、清真寺、零售、过境庇护所和码头、餐馆、学校、办公楼等现代建筑中重复使用“高地板”的设计元素。这种设计革命最终将促使当局考虑将这种设计用于政府建筑,因为它也代表了我们的建筑身份,能源可持续,以及有利于环境。总之,凸起木地板的传统建筑元素可以重新设计并重新商业化,以适应未来的建筑。应该给这种设计一个机会,因为它肯定会使建筑本身、用户和全球环境受益。
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引用次数: 0
From The King’s Speech to the classrooms: Tertiary students’ speaking anxiety and language proficiency 从《国王的演讲》到课堂:大学生的口语焦虑与语言能力
N. Zabidin, M. Atan, N. F. Dellah, N. Nordin, F. H. Amanah
Second language or foreign language learners commonly experience anxiety when they have to speak using the target language. This is made even more apparent when they are required to present during a speaking assessment or speak in front of their peers. Thus, this study was done with the aim to measure UiTM students’ speaking anxiety in English oral presentations in relation to their level of language proficiency. 244 students from four different faculties in UiTM Melaka were given a set of questionnaires that consisted of 33 items adapted from Foreign Language Classroom Anxiety Scale (FLCAS). The data collected through the questionnaires was then analysed using statistical analysis (SPSS). The results showed that the participants experienced high level of speaking anxiety in English oral presentations in all three of the speaking anxieties dimensions. Pearson Correlation test also revealed that there was a significant inverse relationship between their level of language proficiency and speaking anxiety, particularly in terms of fear of negative evaluation and test anxiety. Hence, the results from this study concluded that the students’ language proficiency was significant in examining their speaking anxiety and subsequently, can help provide an understanding on how to tackle the issue of language learners’ speaking anxiety.
第二语言或外语学习者在必须使用目标语言说话时通常会感到焦虑。当他们被要求在演讲评估或在同龄人面前发言时,这一点就更加明显了。因此,本研究的目的是测量UiTM学生在英语口语陈述中的口语焦虑与他们的语言熟练程度的关系。本文对来自马六甲理工大学四个学院的244名学生进行了问卷调查,问卷内容为33个项目。通过问卷收集的数据,然后使用统计分析(SPSS)进行分析。结果表明,在英语口语表达中,被试在三个口语焦虑维度上都表现出较高的口语焦虑水平。Pearson相关测试还显示,学生的语言能力水平与口语焦虑呈显著的负相关关系,尤其是在对负面评价的恐惧和考试焦虑方面。因此,本研究的结果表明,学生的语言能力对他们的口语焦虑有显著的影响,从而有助于理解如何解决语言学习者的口语焦虑问题。
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引用次数: 1
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