43 research outputs found
The Work from Home Revolution: WFH Starter Kit
The implications of the COVID-19 pandemic have greatly changed the norm in the employment system. Workers in both the public and private sectors are now adapted to the term "Work from Home" (WFH). Also, despite the little information on reliable practices for working from home, employees are nevertheless expected to perform at their highest level in accordance with the organizational goals. Therefore, this study is aimed to evaluate the need of establishing a guideline for WFH. A total of 178 employees from both private and government sectors were recruited in this survey. Findings showed that 69.1% of staff agreed their organization should provide them with proper guidelines in the implementation of WFH. It means that when they have specific guidelines it enables them to work more independently which also exhibits flexibility and creativity. As a conclusion, the developed and validated WFH manual handbook is able to become the main reference for employees for them to prepare physically and mentally while working efficiently from home
Experimental Investigation on Palm-Based Oil as Alternative for Biodegradable Power Transformer Oil Application in Malaysia
Most power transformers used petroleum-based oil or so-called mineral oil as insulation. Power transformer oil functions not only as electrical insulation and cooling medium but also to suppress corona and arcing. Over the years, power transformer oil has been widely used because of its high dielectric field strength, low dielectric losses, and long-term performance. However, petroleum-based power transformer oil is non-biodegradable and non-renewable. A serious spill could contaminate soil and water. As a non-renewable source, depletion of the source will further increase the price. These have encouraged researchers to look for alternative power transformer oil for better sustainability. Palm-based oil has been seen as a potential substitute, because, it is environmentally friendly, biodegradable and renewable. However, a lot of studies need to be carried out before it can be used as alternative power transformer oil commercially. Thus, this work has been carried out to investigate several electrical and physical properties of palm-based transformer oil, such as breakdown voltage, partial discharge characteristics, kinetic viscosity, and flash point. The effect of ageing on electrical properties of the palm-based oil has also been investigated. Two types of palm-based oil, namely Palm Fatty Acid Ester (PFAE) and Refined, Bleached, Deodorized Palm Oil (RBDPO) have been selected in this work. As a comparison, the commercially available soy-based biodegradable oil is also investigated for assessment and further analysis purpose. The results revealed that PFAE and RBDPO have great potential as power transformer insulation because of their good insulating characteristics as commercially available biodegradable oil
Effect of Humidity on Partial Discharge Characteristics of Epoxy/Boron Nitride Nanocomposite under High Voltage Stress
Partial discharge (PD) may lead to the degradation of insulating materials and affect the lifetime of high voltage equipment. This paper describes the effect of relative humidity on PD characteristic of epoxy/boron nitride (BN) nanocomposite under high voltage (HV) stress. In this work, CIGRE Method II was utilized as an electrode configuration. BN nanofiller was chosen because of its high insulating properties with high thermal conductivity. The PD characteristics such as PD charge magnitude, PD number or occurrence, and average of PD charge during certain of ageing time under HV stress against relative humidity were examined. The results revealed that PD number of humid samples is higher about 8~14% compared to the normal ones. It is considered due to the decrease of surface resistance of the humid samples. The PD charge magnitudes of humid samples are slightly higher compared to the normal ones. The epoxy/BN nanocomposite has lesser PD number and magnitude compared to the neat epoxy samples
Experimental Investigation on Vegetative Oils under Accelerated Thermal Ageing against Their Dielectric Strength
Insulation is one of the most important parts in high voltage apparatus such as power transformer. Most power transformer use liquid insulation material, known as power transformer oil. Petroleum-based oil so called mineral oil has been used for many years as power transformer oil. This is due to its high dielectric field strength, low dielectric loses and good long-term performance. This research work has been carried out to investigate the effect of thermal accelerated ageing on electrical properties for several vegetative-based oils. The oil samples that have been used in this research work are soy bean-based oil (FR3) and commercial palm-based oil (PFAE). As comparison, Hyrax mineral oil has also been investigated. The results revealed that vegetative-based oils have as well as dielectric strength compared with mineral oil.ย It was found that the dielectric strength for all oil samples decreased when undergo the thermal accelerated ageing process
Analisis Hibah menurut tinjauan Fiqh dan Kompilasi Hukum Ekonomi Syariah (KHES)
Kompilasi Hukum Ekonomi Syariah (KHES) Indonesia telah dibentuk sebagai respons terhadap keperluan undang-undang yang mengikat bagi menyelesaikan permasalahan muamalat termasuklah hibah. KHES telah dikoordinasi hasil daripada pelbagai pandangan mazhab yang disesuaikan dengan masyarakat Indonesia. Oleh itu, artikel ini dibuat untuk meneliti hibah menurut fiqh dan Kompilasi Hukum Ekonomi Syariah (KHES). Penulisan dijalankan berdasarkan reka bentuk kualitatif melalui pendekatan analisis kandungan. Data-data dikumpulkan melalui kaedah kepustakaan dan dianalisis secara deskriptif. Hasil penelitian mendapati peruntukan berkaitan hibah menurut Kompilasi Hukum Ekonomi Syariah (KHES) secara asasnya adalah sama seperti mana pandangan fiqh, namun terdapat juga peruntukan tambahan yang diletakkan di dalam KHES. Jumhur ulama menggariskan empat rukun hibah iaitu pemberi hibah, penerima hibah, harta yang dihibah dan sighah, sebaliknya terdapat lima rukun hibah menurut KHES iaitu pemberi hibah, penerima hibah, harta yang dihibah, iqrar dan qabd. KHES juga menetapkan takrifan baligh dan berakal bagi pemberi hibah ialah individu yang telah mencapai umur 18 tahun atau pernah berkahwin. Selain itu, terdapat juga perbezaan dari sudut penerimaan hibah melalui wali atau wakil wali di mana jumhur ulama mensyaratkan penerima hibah tersebut belum mukallaf, sebaliknya KHES mensyaratkan penerima hibah belum mumaiyiz. Penerimaan harta hibah menurut KHES adalah sama dengan penerimaan barangan dalam transaksi jual beli. Keadaan yang mengharuskan penarikan balik hibah menurut KHES ialah hibah ibu bapa kepada anak, penarikan balik hibah berlaku sebelum qabd dan larangan oleh pemberi hibah daripada mengambil harta hibah. Akhir sekali, terdapat beberapa penambahan peruntukan dalam KHES berkaitan pemberian hibah ketika marad al-maut yang kelihatan sama seperti peruntukan pada Perkara 877 dan Perkara 878 Majallat al-Ahkam
Green Lean TQM Islamic Process Management Practices In Malaysian Food Companies / Nur Asiah Kuzaiman...[et al.]
Halal market is expanding globally. With the world Muslim population is approaching 2.8 billion people, Muslims are expected to account for 30% of the worldโs population by 2025. This large market has created interest from food producing countries worldwide including Malaysia. Being recognized internationally as a progressive Muslim country, Malaysia has the edge of becoming a major producer of Halal food products. Nevertheless, in order to realize this potential demand, the food-based Halal industries should consistently enhance their products by practising a high quality process management system. Lean TQM Islamic Process Management System is a system whereby Process Management Practices are integrated to Lean Manufacturing (LM), Total Quality Management (TQM), Environmental Management System (EMS) and Islamic Manufacturing Practices (IMP) principles. In this study, 30 food companies from Selangor have been selected to participate in this survey. From the data collected, Green Lean TQM Islamic Process framework have been proposed. The implementation practices were divided into 5 categories which are Foundation Level, Level 1, Level 2, Level 3 and level 4. From the data collected in this study, unfortunately there are none of the practices listed in the Foundation levelThe output from this study will provide insights on the good management benchmark that will be beneficial to the food industries, especially for Small and Medium Enterprise (SMEs)
Electrical tree inception voltage and propagation in XLPE containing silica nano๏ฌller
This paper presents the tree inception voltage and electrical tree propagation in XLPE containing silica nanofiller. The concentration of silica nanofillers in XLPE was 0 wt%, 0.5 wt%, 1.0 wt%, 1.5 wt% and 1.75 wt%. The needle plate electrodes were used to analyzed the tree inception voltage and electrical treeing propagation. The structure and the propagation length of electrical tree growth were analyzed after 20 min of tree inception voltage. The result of tree inception voltage and the electrical tree propagation in XLPE containing silica nanofiller was compared with pure XLPE composite. The silica nanofiller with the concentration of 1.5 wt% revealed the higher TIV and slower propagation of electrical tree in the XLPE nanocomposite