The development of fire prevention basic learning application

Fire prevention skills are necessary for preventing a person from being caught in uncontrollable spread of fire. Therefore, every person has to equip him/herself with the basic knowledge of handling fire at the early stage. The aim of this study is to develop an application on basic fire prevention. The study seeks to achieve the following two objectives: (i) to develop and design a basic fire prevention application with embedded multimedia elements and (ii) to test the functionality of the application in terms of content, interface, and interaction aspect. The rapid prototyping model (analysis of needs, objectives, designs, testing and implementation) was selected as a development model and the behaviourism learning theory was applied. Adobe Flash Professional CS6 was chosen as the development platform. The application consists of three modules: “You Need to Know,” “Mind Test,” and “Guide.” To test the functionality of the application, the developer collected data from three experts from the Faculty of Technical and Vocational Education and Malaysia Civil Defence Force Officer, Batu Pahat. The three experts were selected through targeted sampling. The result concluded that the application was smooth in terms of functionality thus is suitable for new learners to learn about basic fire prevention

Effect of sintering temperature on structural and morphological properties of europium (III) oxide doped willemite

Willemite- (Zn2SiO4-) based glass ceramics doped with various amounts of europium oxide (Eu2O3) were prepared by solid state melting and quenching method. Effect of sintering temperature (600–1000∘ C) on structural and morphological properties of the doped samples was investigated. Phase composition, phase evolution, functional groups, and microstructure analysis were, respectively, characterized using X-ray diffractometer (XRD), fourier transform infrared spectroscopy, field emission scanning electron microscopy (FE-SEM), and energy-dispersive X-ray. XRD analysis detected the presence of rhombohedral crystalline phase in the doped samples sintered at different temperatures. FE-SEM and bulk density results confirmed that doping of the willemite with Eu2O3 effectively enhanced densification. The microstructural analysis of the doped samples showed that the average grain size increased with the increase of sintering temperature

Optimization of protease extraction from ridged gourd (Luffa acutangula

Recently, the widespread use of proteases in industries, such as detergent, food, and pharmaceutical sectors, has increased the demand for proteolytic enzymes in the global market. Although the main sources of commercial proteases are animals and microorganisms, the potential of using nonconventional sources, especially plants, should not be overlooked. In this study, proteolytic enzymes were extracted from the sarcocarp of ridged gourd (Luffa acutangula), and the effect of the extraction process on protease activity was evaluated. The crude enzyme was optimized via response surface methodology (RSM) using a central composite rotatable design (CCRD). Four independent variables were studied, namely, the pH, the concentrations of Triton X-100 (TX-100) and 2-mercaptoethanol, and the mixing time. The optimum level of each variable based on the RSM model was determined: at pH 6.38, 4.99% (v/v) TX-100, 0.15 M 2-mercaptoethanol, and a mixing time of 4.09 min, the optimum protease activity was estimated at 1.35 U/g. A verification test revealed satisfactory agreement between the model and experimental results with 96% desirability, indicating that the quadratic model generated from RSM is significant

Optimization of protease extraction from ridged gourd (Luffa acutangula) sarcocarp via response surface methodology

Recently, the widespread use of proteases in industries, such as detergent, food, and pharmaceutical sectors, has increased the demand for proteolytic enzymes in the global market. Although the main sources of commercial proteases are animals and microorganisms, the potential of using nonconventional sources, especially plants, should not be overlooked. In this study, proteolytic enzymes were extracted from the sarcocarp of ridged gourd (Luffa acutangula), and the effect of the extraction process on protease activity was evaluated. The crude enzyme was optimized via response surface methodology (RSM) using a central composite rotatable design (CCRD). Four independent variables were studied, namely, the pH, the concentrations of Triton X-100 (TX-100) and 2-mercaptoethanol, and the mixing time. The optimum level of each variable based on the RSM model was determined: at pH 6.38, 4.99% (v/v) TX-100, 0.15 M 2-mercaptoethanol, and a mixing time of 4.09 min, the optimum protease activity was estimated at 1.35 U/g. A verification test revealed satisfactory agreement between the model and experimental results with 96% desirability, indicating that the quadratic model generated from RSM is significant

The application of liquid membrane waterproofing system for water tank work at kolej Pasir Salak / Nur Fatin Syamimi Mohd Afandi

Waterproofing is defined as the process of making an object or structure waterproof or water-resistant so that it will remains unaffected by water or resisting the ingress of water under specified conditions. Waterproofing is used in reference to building structures such as basement, flat roofs and wet areas. Modern items also can be waterproofed by applying water-repellent coatings. There are several components that will contribute to waterproofing system such as drainage composites that direct water away from structures, tie-ins between façade and foundation membranes. There are two types of waterproofing which is liquid membrane waterproofing and sheet mats waterproofing. In this case study, the topic chosen is The Application of Liquid Membrane Waterproofing System For Water Tank Work at Kolej Pasir Salak UiTM Seri Iskandar. In the application works, types of waterproofing used is liquid membrane. The liquid membrane used is a cement-based materials which is Sika Top Seal 107 Part A and Part B. The Sika Top Seal 107 Part A and Part B will be mixed very well to produce a good waterproofing. During the process of application works, there are several problems occurred such as narrow space and poor workmanship

Effect of high sintering temperature on the cobalt ferrite synthesized via co-precipitation method

Magnetic particle is one of the main elements used in magnetorheological (MR) materials. In this study, the magnetic cobalt ferrite nanoparticles are successfully synthesized via co-precipitation method at different sintering temperatures. The nanoparticles are prepared in neutral condition (pH 7) at different temperatures of 900, 1000 °C for 8 h, individually. The properties of cobalt ferrite related to phase analysis, microstructure and magnetic properties were characterized by particle size analyzer (PSA), field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and vibrating sample magnetometer (VSM). The result showed that the size of cobalt ferrite powders are 16.72, 17.76 and 37.29 nm correspond to different temperatures of 900, 1000 and 1100 °C, respectively. This indicated that the higher sintering temperature induced to the synthesized cobalt ferrite, greater size of the nanoparticles will be obtained. Meanwhile, the micrograph of cobalt ferrite powders poses a polygonal shape with all exhibit the face centered cubic (FCC) structure. In the meantime, the magnetic saturation, Ms increased with the size of nanoparticles increased from 28.95 to 38.85 emu/g, simultaneously correspond to increasing in the sintering temperatures. The results underlined that the sintering temperature did affect and alter the size of CoFe2O4 nanoparticles that resulted in magnetic properties enhancement