Browse
Search Research Outputs
RECENT SUBMISSION
-
PublicationCharacterization of Kapok (Ceiba pentandra (L.) Gaertn.) and its reusability in oil sorption( 2024-12)Natural fiber such as kapok (Ceiba pentandra L. Gaertn.) is an effective, environmentally friendly, and sustainable material for oil sorption due to its unique structure, which offers high sorption ability, good selectivity, and reusability. Kapok fiber was characterized using Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and contact angle. The oil sorption characteristics of kapok fiber were evaluated across different types of cooking oil. The result demonstrated that kapok possesses excellent hydrophobic-oleophilic properties, including a hollow lumen structure of kapok fibers that enables it to absorb and retain large amounts of oil while repelling water. Additionally, a waxy substance on its surface further enhances its hydrophobic properties. Kapok fiber also exhibits a contact angle of 123.80º > 90º, proving that kapok has low water wettability. The reusability of 1g kapok fiber in oil sorption is tested by using various types of cooking oil with the following standard test method for sorbent performance of adsorbents (ASTM F726-12) across five types of cooking oil. The results show that the kapok fiber retained the oil absorbed even after being reused for 24 cycles, despite slight decreases.
-
PublicationAbsorption ability and degradable of thin film from Orange peel waste( 2024-12)Bioplastics are plastic derived from natural resources and they are bio-degradable entirely or partially. Fruit waste is supposed to be an undesirable matter and will be used as compost. The present work aimed to produce a thin film from fruit material, in converting the fruit-derived waste into useful material. The thin film was developed by film casting method using waste fiber from orange peel, glycerol, and corn starch. The thin film was characterized by water, oil absorption, and biodegradable properties. The fact, natural fibers that originate from the surface of the fruit are hydrophilic rather than oleophilic, so the thin film tends to absorb more water than cooking oil over 28 days of observation. The biodegradation rate of orange peel film is quickest for films with 50 wt.% of orange peel powder and slowest for films with 0% of orange peel powder. We concluded that these materials can be used for membrane and packaging applications. Therefore, this work aims to provide a promising bioplastic that will help the environment and be an alternative material to modern society.
-
PublicationEco-friendly detergent powder from waste cooking oil using cold process characterisation and comparative evaluation( 2024-12)The appropriate disposal of waste cooking oil (WCO) is an urgent environmental concern due to its potential adverse impacts. This study introduces an eco-friendly approach to synthesise detergent powder from WCO using the cold process method. The WCO underwent comprehensive sand characterisation, including pH value, viscosity measurements, and colour observation, revealing properties comparable to new cooking oil (NCO). The detergent powder produced, DWCO (from WCO) and DNCO (from NCO), was compared to a commercial detergent powder (CDP) through a comprehensive evaluation. Fourier-Transform Infrared Spectroscopy (FTIR) analysis revealed characteristics of C−H bonding and O−H bonding in the samples. The detergent foam stability test indicated similar performance for DWCO and DNCO, with a volume loss of 54% and 35%, respectively, after 30 minutes. This study contributes to the sustainable management of WCO by transforming it into eco-friendly detergent powder with comparable performance to commercial alternatives. The utilisation of waste resources in detergent production offers a promising solution for responsible waste disposal and encourages the adoption of green practices in the detergent industry.
-
PublicationCreep rupture and thermal shock failures of nickel-based alloy reformer tubes a comparative analysis( 2024-12)This paper examines the failures of radiant tubes within a fertilizer plant's steam reforming unit between the creep rupture and thermal shock, encompassing discussions on the characteristics of the failures, microstructural analysis of the failures, the mechanisms of degradation at high temperatures, and forthcoming preventive actions. The primary reformer is where the initial stage of the steam reforming process occurs, involving the downward passage of a preheated hydrocarbon and steam mixture through radiant tubes containing catalysts. The resulting reformed gas, enriched with carbon monoxide, is further processed into ammonia- rich synthesis gas. These radiant tubes, crafted through centrifugal casting and primarily composed of 35% nickel and 25% chromium, operate at temperatures of 9100C. The discovery of a leaking radiant tube necessitated an unscheduled shutdown, with the failure manifesting as an elliptical window-shaped rupture situated 590 mm from the tube's upper end. The affected tube was subsequently removed, and the outlet weldolet was sealed. During an online refractory repair operation, a catalyst tube exhibited a circumferential crack at a location 770 mm from the tube's upper end. At the same time, another catalyst tube was also observed with a longitudinal crack located at 5130 mm from the tube’s upper end. To address these issues, both tubes were isolated from service through crimping at the top inlet hairpin and bottom outlet pigtail. Detailed metallurgical and failure analyses unveiled that one of the failures was initiated by intergranular cracking at the outer diameter, associated with thermal shock-induced cracking, followed by fatigue-driven crack propagation due to thermal stress and cyclic loading. Meanwhile, the other failed tube identified creep as the failure mechanism due to a combination of time, temperature and stress under such extreme operating conditions. The paper further explores the similarities and differences between these two radiant tube failure incidents and associated failure morphology and mechanisms.
-
PublicationCorrosion behaviour of mild steel : insights from tafel extrapolation analysis in flowing 3.5% NaCl solutions and soil with diverse resistivity levels( 2024-12)The corrosion behaviour of AISI 1006 steel in diverse environmental conditions were comprehensively investigated to offer valuable insights into corrosion mitigation strategies for critical infrastructure protection. This study employed an optical emission spectrometer, pH measurements, soil resistivity assessment, and Tafel extrapolation conducted with a potentiostat. The study encompassed stagnant and flowing 3.5% NaCl solutions, with flow velocities ranging from 0 to 12 km/h, and considered soil corrosiveness based on soil resistivity. In stagnant 3.5% NaCl solutions, minimal corrosion was observed due to limited oxygen availability, resulting in a 6.634 x 10¯3 mm/year corrosion rate. A noteworthy trend was evident in flowing 3.5% NaCl solutions, with corrosion rates peaking at 9 km/h (11.918 x 10¯3 mm/year) and subsequently decreasing at 12 km/h (10.423 x 10¯3 mm/year). This intriguing pattern may be attributed to the potential formation of a protective oxide layer at higher flow velocities, likely due to increased dissolved oxygen and mass transport. The soil's corrosiveness significantly influenced corrosion rates, with lower-resistivity soils exhibiting heightened corrosion rates. In very mildly corrosive soil, AISI 1006 steel displayed a corrosion rate of 2.818 x 10¯4 mm/year. The corrosion rate increased as soil corrosiveness intensified, reaching its peak of 6.319 x 10¯4 mm/year in severely corrosive soil. Extremely corrosive soil led to a corrosion rate of 8.033 x 10¯4 mm/year, as improved soil conductivity accelerated ion transfer and electron flow, ultimately expediting corrosionrelated electrochemical reactions. This study enhances the understanding of AISI 1006 steel corrosion in varying conditions, providing critical data for corrosion control in structures and assets, emphasising the need for tailored prevention measures.
Most viewed
-
PublicationPower Amplifier for 5G Technology( 2023)This book has significant value to all level of students both undergraduates as well as, postgraduate students, researchers, and engineers in the field of radio-frequency integrated circuit (RFIC) design. This book provides comprehensive understanding state-of-the-art for RF design specifically radio frequency (RF) power amplifier design. It covers overview of 5G technology, fundamental of power amplifier, design implementation of 5G power amplifier, schematic design, layout and simulation results with an in-depth illustrative discussions and up-to-date references. It is useful as a reference and essential book for high-frequency circuit designers in both academia and industry.
128 115 -
PublicationDeveloping a model of entrepreneurial career success in the Malaysia cosmetic industry( 2023)The evidence suggests that entrepreneurship is important for economic development and reducing social problems like unemployment. However, success rates vary among different industries. Few studies have been conducted on the determinants of career success in the cosmetics industry, especially in Malaysia. This study aimed to investigate the impact of behavioural and psychological factors on intrinsic career success among cosmetic entrepreneurs In Malaysia. Data was collected from 301 NPRA-Registered Cosmetic Entrepreneurs using a cross-sectional approach and analyzed using SPSS and Pls-Sem Statistical software. The study found that career commitment and emotional intelligence had a significant positive effect on intrinsic career success, While career aspiration did not. The study provides insights that can support entrepreneurship at the national level in Malaysia and contribute to the development of a model of career success among Malaysian cosmetic entrepreneurs.
95 24 -
PublicationThermal properties of nanocellulose‐reinforced composites: a review( 2019)Nanocellulose has received increasing attention in science and industry in recent years as a nanoscale material for the reinforcement of polymer matrix composites due to its superior mechanical properties, renewability, and biodegradability. New nanocellulose sources, modifications, and treatments are under development to reduce the high energy required during production and to create a more suitable industrial-scale production process. Thus, this paper reviews plant-based nanocellulose composites and their properties, with a focus on their thermal-related characteristics. The purpose of this review is to establish for readers the impact of the incorporation of nanocellulose on the thermal and dynamic mechanical properties of nanocellulose composites. Understanding of the thermal properties is important for researchers to assess the suitability of the nanocomposites for a variety of applications in response to new and evolving societal requirements.
29 94 -
PublicationAsas sistem pneumatik dan hidraulik( 2015)Buku ini memberi pendedahan berkenaan pengenalan berkenaan Asas Pneumatik, Sistem Pneumatik, Elektro-Pneumatik, Asas Hidraulik dan Sistem Hidraulik yang dipraktikkan dalam Industri pada masa ini. Buku ini memfokuskan kepada asas pengenalan yang merangkumi teori-teori asas pneumatik, elektro-pneumatik, hidraulik dan pam hidraulik. Buku ini juga mengetengahkan simbol-simbol, komponen-komponen, dan litar-litar yang digunakan di dalam Sistem Pneumatik dan Hidraulik serta aplikasinyanya dalam Industri dan juga komponen-komponen yang diperlukan untuk melengkapkan sesuatu litar pneumatik, elektro-pneumatik dan hidraulik. Buku ini juga turut membincangkan tentang aras dan kedudukan setiap komponen mengikut kumpulan bagi litar pneumatik, elektro-pneumatik dan hidraulik. Di akhir bab buku ini menceritakan tentang teori-teori pam dan pengiraan yang terlibat bagi pam hidraulik.
763 89 -
PublicationPhotocatalytic degradation of sugarcane vinasse using ZnO photocatalyst: operating parameters, kinetic studies, phytotoxicity assessments, and reusability( 2021)Photocatalytic degradation performance is highly related to optimized operating parameters such as initial concentration, pH value, and catalyst dosage. In this study, the impact of various parameters on the photocatalytic degradation of anaerobi‑ cally digested vinasse (AnVE) has been determined through decolourization and chemical oxygen demand (COD) reduction efciency using zinc oxide (ZnO) photocatalyst. In this context, the application of photocatalytic degradation in treating sugarcane vinasse using ZnO is yet to be explored. The COD reduction efciency and decolourization achieved 83.40% and 99.29%, respectively, under the conditions of 250 mg/L initial COD concentration, pH 10, and 2.0 g/L catalyst dosage. The phytotoxicity assessment was also conducted to determine the toxicity of AnVE before and after treatment using mung bean (Vigna radiata). The reduction of root length and the weight of mung bean indicated that the sugarcane vinasse contains enormous amounts of organic substances that afect the plant's growth. The toxicity reduction in the AnVE solution can be proved by UV–Vis absorption spectra. Furthermore, the catalyst recovery achieved 93% in the reusability test. However, the COD reduction efciency and decolourization were reduced every cycle. It was due to the depletion of the active sites in the catalyst with the adsorption of organic molecules. Thus, it can be concluded that the photocatalytic degradation in the treatment of AnVE was efective in organic degradation, decolorization, toxicity reduction and can be reused after the recovery process.
28 88
Title
-
Publication"A binding contract between the dominant and the submissive”: linguistic analysis of gender bias in Fifty Shades of Grey (2015)( 2022-12)Language, a significant tool for communication, is implemented to express an interlocutor’s attitude. Their language choice can imply manipulation of power or discrimination between sexes, also known as sexist language. Since dialogues in movies represent real-world communication, this study aims to delve into the sexist language depicted in Fifty Shades of Grey (2015), a romantic drama film. In particular, the genre reflects the apparent discrepancy between male and female counterparts in terms of language and gender bias. The movie was then selected as the main text for the linguistic investigation of sexist language in this descriptive qualitative research. The essential framework in this research is centered extensively on Sara Mills’ theory regarding language and feminism encompassing overt sexism and indirect sexism. Overt sexism is categorized into six types including generic pronouns, generic nouns, non-parallel terms, sexism in proverbs, sexism in swear word, and derivation. On the other hand, indirect sexism is categorized into six subtypes, namely humor, presupposition, conflicting message, scripts and metaphors, collocation, and androcentric perspective. The researchers observe that characters and their attitudes render sexist ideology while their utterances convey gender-related discrimination.
2 10 -
Publication"look & blink" two step verification security log in system( 2021-03-01)A new artificial intelligence security design which is face recognition with eye blinking login system is proposed. It aims to strengthen the security account for each user using artificial intelligence technology and increase speed and user convenience for security during login. The face of a person cannot be copied and it can replace the username of the user, while eye blinking detection is another step for double verification replacing the password of a user. It is a two-step verification process that can be applied to all sorts of account login field so that this technology can replace the old school username with a password security system. The recognition system used a real-time where it is reducing the number of hackers in the field as it is impossible to hack a person's real-time face. The proposed system has been tested and analyzed the functionality by accessing the personal account in the university's portal.
-
Publication"talking Phonics for Autism": Developing a multi-purpose touch screen technology software application which utilizes sound articulation point to teach autistic children( 2018-02-26)This paper aims to examine the potentials of the multi-purpose touch screen technology application which utilizes a sound articulation point software called "TALKING PHONICS FOR AUTISM"as an alternative method of teaching phonics to autistic children. "TALKING PHONICS FOR AUTISM"is developed via a collaborative effort between the Centre of International Languages (CIL) and the School of Human Development and techno Communication (iKOM), University Malaysia Perlis (UniMAP). The reading skills of autism children are developed intofive (5) levels ofMalay reading comprehension skills. The first level consists of open syllables - vowels and consonants. The following consecutivethree levels comprised of closed syllables. The fourth level introduces vocal sequence while the fifth level constitutes of Malay language loans. The Malay-language dialect phonological theory by Tajul Aripin Kassin (2000) which is based on Clements & Keysher's (1980) Generative Booking Generic Fonology Model (CV) forms the theorectical framework of this paper.
-
Publication"UniMAP 2002-2005: Persepsi dan impak ekonomi Perlis"( 2011-02)Universiti Malaysia Per/is (UniMAP) ditubuhkan pada Julai 2001 dan telah memulakan operasinya secara rasmi selepas perlantikan Brigedier Jen. Dato 'Professor Dr. Kamarudin Russin sebagai Naib Canselor pertama pada 16 Februari 2002. Setelah empat (4) tahun beroperasi (2002 hingga 2005), UniMAP telah memberikan sumbangan yang sangat besar di negeri ini. lmpak utama UniMAP adalah dalam aspek ekonomi. Yang mana selama operasinya di Per/is, UniMAP telah menyumbang jutaan ringgit untuk prasarana dan perbelanjaan mengurus termasuklah emolumen staf dan perbelanjaan pelajar. Kertas kerja ini akan melihat kesan yang dibawa oleh UniMAP selama operasinya di Per/is terutamanya dalam aspek ekonomi termasuk jugalah pandangan penduduk Perlis, staf dan pelajar terhadap UniMAP dan kesan kampus teragih serta kesan pemusatan UniMAP terhadap ekonomi Per/is. 565 responden yang terdiri daripada masyarakat luar, sta.f dan pelajar UniMAP terlibat dalam penyelidikan ini. Semua maklumat ini dihurai secara diskriptif dan diikuti dengan ana/isis statistik yang mudah untuk menjelaskannya disamping data-data sekunder daripada pelbagai agensi samaada agensi kerajaan negeri, persekutuan, swasta mahupun UniMAP sendiri.
7 7 -
Publication1-point fractional adams method for solving single order differential equations with fractional delay( 2023-11-17)This paper deals with fractional delay differential equations (FDDE) of single order with fractional Caputo derivatives using the 1-point fractional Adams method. The proposed method is a predictor-corrector approach that can be constructed from the Adams-Bashforth method and Adams-Moulton method to achieve both simplicity and accuracy. The implementation of the fractional Caputo derivatives using the Euler-Gamma function and the approximation of delay term using the Newton divided difference interpolation are discussed. Some of the numerical examples are presented to show the proposed method is reliable and efficient
1
Most downloaded
-
PublicationPantun Pak Nazel : lisan diperi setulus nubari( 2020)Pantun Melayu warisan silam masih signifikan berfungsi dalam kehidupan kontemporari buat berhibur dan pengenalan jati diri masyarakat pemiliknya serta sebagai teknik pengajaran dalam pendidikan. Buku Pantun Pak Nazel: Lisan Diperi Setulus Nubari adalah karya genre pantun ciptaan peribadi yang ke-13 oleh pengarang. Yang istimewanya ialah pantun-pantun yang dipersembahkan, sebahagiannya amat berbeza daripada yang termuat di dalam buku-buku pantun beliau yang terdahulu. Paling ketara ialah kehadiran pantun-pantun yang tidak lazim dikarang oleh penulis-penulis pantun yang lain: misalnya seperti pantun 24 kerat, 20 kerat, 16 kerat, 12 kerat, 10 kerat, lapan kerat dan enam kerat. Namun, Pak Nazel tidak melupakan pantun jenis lazim seperti, pantun empat kerat, juga pantun empat kerat tiga kata sebaris yang mengutarakan pelbagai perkara seperti mengenai harta, hina, ikhlas, jiran, kawan, rindu dan sombong. Penguasaan berbahasa Nazel Hashim Mohamad amat tinggi dan tidak ketandusan kata-kata mahupun ilham. Malah, begitu kreatif dalam menyirat hanya kata-kata akar dengan mengelak penggunaan imbuhan dalam bentuk pantun lazim popular, pantun empat kerat. Pemilihan katanya tepat, sesuai dan padan dengan mesej yang cuba diungkapkan serta menyerlah keindahan melodi dan makna bagi setiap binaan rangkap pantun ciptaan itu. Hasilnya, terjelma suatu koleksi pantun yang kelihatan mudah binaan kata-katanya tetapi segar dalam cakupan mesej yang ingin disampaikan khususnya dalam memperkatakan hal-hal yang kompleks dan abstrak serta kontemporari sifatnya selari dengan alaf milenium yang dilangkauinya.
1814 18 -
PublicationAsas rancangan perniagaan kejuruteraan( 2011)Buku Asas Rancangan Perniagaan Kejuruteraan ialah sebuah buku yang membicarakan mengenai beberapa komponen yang seharusnya wujud di dalam rancangan perniagaan. Apa yang ditekankan ialah pengetahuan asas untuk menghasilkan rancangan perniagaan yang mudah difahami, lengkap dan mempunyai penerangan yang jelas. Buku ini mengandungi 10 bab utama yang telah diperhalusi mengikut sub-sub topik tertentu seperti memahami rancangan perniagaan, pelan rancangan dalam menentukan organisasi, kewangan, pengeluaran dan rancangan pemasaran.
53 1527 -
PublicationKeusahawanan Islam di Malaysia : perkembangan dan cabaran( 2020)Penulisan keusahawanan Islam akan membawa pembaca untuk memahami isu-isu semasa yang sering dibincangkan dalam keusahawanan. Ini kerana, persoalan kemanusiaan sentiasa bersifat kompleks dan dinamis bersesuaian dengan realiti dan kondisi sesuatu masyarakat. Pelbagai cabaran dan rintangan perlu dihadapi oleh manusia demi meneruskan kelangsungan kehidupan di muka bumi dengan sejahtera khususnya dalam konteks keusahawanan. Topik perbincangan ini dimulakan dengan konsep keusahawanan kemudian diikuti dengan konsep keusahawanan Islam. Selanjutnya, perbincangan difokuskan kepada kedudukan ilmu keusahawanan dari sudut muamalah Islam. Bagi memberi gambaran yang jelas, konsep usahawan berjaya dikupas dengan mengambil kira pandangan al-Quran dan hadis supaya para pembaca mendapat gambaran yang jelas mengenai konsep pandang semesta Islam berkaitan keusahawanan. Penulisan ini juga turut membincangkan cabaran yang dihadapi dan peranan kerajaan serta kepentingan pembudayaan keusahawanan Islam pada masa kini. Semua perbincangan ini disertai dengan contoh-contoh semasa yang relevan dengan negara Malaysia pada hari ini. Adalah diharapkan pembaca dapat mengambil faedah daripada isu-isu yang dihidangkan oleh para penulis.
37 1509 -
PublicationPengenalan kepada ujian bahan tanpa musnah( 2013)Pengenalan Kepada Ujian Bahan Tanpa Musnah merupakan sebuah buku yang membincangkan beberapa perkara asas yang penting dalam ujian tanpa musnah. Ia meliputi kebanyakan kaedah ujian tanpa musnah yang sering digunakan di industri. Buku ini memberi penerangan dalam ujian bahan tanpa musnah yang sering digunakan dalam industri bagi memeriksa kecacatan atau ketidaksempurnaan sesuatu bahan tanpa merosakkan atau memusnahkan bahan yang diperiksa. Keseluruhan kandungan buku ini merangkumi perbincangan dari aspek teori serta konsep pengujian, kaedah pengujian, dan aplikasi ujian dalam industri.
1191 53 -
PublicationPerkahwinan tanpa kebenaran : wacana dari sudut hukum dan perundangan Islam( 2015)Penulisan buku ini dimulakan dengan falsafah perkahwinan menurut syariat. Kupasan panjang lebar juga difokuskan kepada bab perwalian yang menjadi asas kepada perbahasan dan perbincangan terhadap isu perkahwinan tanpa kebenaran dari sudut pandang hukum dan perundangan yang sedia ada. Perbincangan perkahwinan tanpa kebenaran ataupun dikenali dengan istilah populisnya ‘kahwin lari’ lebih menarik lagi disebabkan perbahasan berkaitan dengannya berasaskan kepada kes-kes yang berlaku di Mahkamah Syariah. Beberapa cadangan penambahbaikan telah diberikan sebagai input tambahan kepada pihak berwajib dalam menangani permasalahan perkahwinan tanpa kebenaran. Secara keseluruhannya, buku ini dapat memberi gambaran umum berkaitan perkahwinan tanpa kebenaran yang berlaku di negeri Perlis.
899 65