175 research outputs found

    Design and fabrication of biodiesel mixer for the compatibility study of biodiesel blends with automotive part material

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    Biodiesel is a way or alternative to replacing pure fossil fuel where it likely going exhaust and may run out totally. Biodiesel is a mixture of sentence percentage of diesel oil and it will combine it with suitable organic substance. However, seems like not all of raw material that will combine with biodiesel compound is suitable and an analysis should be done before a massive production of sector automotive take place by using that raw material. The mixture of biodiesel and raw material usually been done with small beaker which is the testing space is limited. Therefore, this final year project is focusing on design and fabrication a biodiesel mixer which can replace recent testing toward compatibility study of automotive material. In addition, each of criteria of biodiesel mixer needs to be similar to recent analysis method. Each of the specimens can be hang on the biodiesel container in sentence of time to study the material is suitable or not. Besides that, all tools and equipment that being uses in fabrication of biodiesel mixer needs compatibility enough with biodiesel to avoid error while testing took place. Thus, this project will make the researcher done an analysis easier compare to recent method toward compatibility study of biodiesel mixed with automotive material

    Mobile-based library loan service(MBLLS)

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    Most libraries provide book reservation and renewal services through the library counter as well as online computer.However, through the counter, these services are only available during of ice hours.Even though through online computer, users are able to access the services anytime, but they must be connected to the Internet which limits their access to these services.Since the need of library users have increased tremendously, an alternative technology is required.Thus, mobile technology has been identified as a potential alternative since it is able to provide the two services anytime and anywhere.This paper discusses a prototype Mobile-Based Library Loan Service (MBLLS), a facility which has been developed for library users to access online library services through mobile devices. MBLLS was developed for book reservation and renewal services. Results of user evaluation on the MBLLS indicate that it has good usability in terms of Usefulness, Ease of Use and Outcome/Future Use.The results also indicate that there is a significant dif erence between novice and expert users for Usefulness and Ease of Use, while no significant dif erence for Outcome/Future Use

    Implementasi Konsep Lean Manufacturing Untuk Meminimalkan Waktu Keterlambatan Penyelesaian Produk ”a” Sebagai Value Pelanggan (Studi Kasus PT. Tsw (Tuban Steel Work)

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    PT. TSW (Tuban Steel Work) is a company engaged in manufacturing fabricated (make to order) with the commitment and the goal of providing effective services, convenient and timely delivery. But in fact, the company's commitment to the purpose can not be achieved that delays the project completion time is not in accordance with the order due date. Based on the observations made in the study, this is due to some events that can not add value or called by the waste (non-value added). This study aims to identify waste, analysis of contributing factors and recommendations for improvement as the system improvement efforts in creating customer value. By using the concept of lean manufacturing this study begins by describing the current state map and weighting of the waste system, waste weights were analyzed by matrix VALSAT used to identify waste in the system, to analyze the causes of waste by fishbone diagram to illustrate the root cause of waste and failures mode system analysis using failure mode and effect analysis (FMEA) to determine the value of risk priority number (RPN) of the potential causes and potential effects of waste that occurs. The results showed that the waste that occurs is that there are waiting on purchasing activities (supplier), marking-up cutting and fit-up welding. From the discussion, the company recommended improving information systems internal-external (supplier) as well as improvements in the fabrication process activities

    Analysis of Distance Transforms for Watershed Segmentation on Chronic Leukaemia Images

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    Leukaemia is a blood cancer that contributes to the increase in the world mortality rates per year. Leukaemia can be divided into two major types which are acute and chronic leukaemia. This disease is caused by the excessive production of abnormal white blood cells (WBCs); hence these cells play a major role in the screening and diagnosis of leukaemia disease. Leukaemia screening requires the complete blood count process. However, due to the cells complex nature in chronic leukaemia which is overlapped, it would be difficult to obtain the accurate number of the WBCs for the screening process. Therefore, this paper proposes an automated WBCs counting with analysis of watershed segmentation for the screening of chronic leukaemia images. The segmentation approach consists of a few steps; (1) colour conversion, (2) image segmentation, (3) noise removal and (4) separation of overlapping WBCs. In this paper, three different distance transforms for watershed segmentation known as Euclidean, city block and chessboard have been analysed in order to find the best approach which is capable of separating the overlapping WBCs. The experimental results show that segmentation using watershed based on Euclidean has successfully segmented 50 blood images with average counting accuracy of 99.81%, as compared to the city block (91.09%) and chessboard (98.78%). Thus, the proposed procedures with watershed segmentation provide an efficient alternative in enhancing the accuracy of the WBCs count for leukaemia screening

    Holding, grasping and sensing of prosthetic robot arm like a real human hand, a journey beyond limits: An extensive review

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    This paper provides a comprehensive survey on the current state of prosthetic robotic arm; focusing on grasping strategy, sensing technologies, and control system. Numerous studies have been carried on prosthetic robotic arm field in improving its functionality. Mechanical/ prosthetic robotic arm is built to function as real—human-hand like for various fields like medical and industrial purposes. Starting from the design to details of every single compartment of the arm, up to providing the most needed function according to the purpose of the prosthetic robotic arm was built. The implementation method and system con-trol/architecture used are with proven experimental results that indicate each study's outcome is the primary concern. Although each developed prosthetic ro-botic arm differed between each other based on their purpose and technology used, aiming for the optimal design similar to human’s hand proves challenging for researchers, especially when it comes to the issue of practicality in whether it can be used to accomplish regular tasks a standard arm are able to

    Recent developments and perspectives in CdS-based photocatalysts for water splitting

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    Over the past few years, many approaches have been developed progressively to produce hydrogen (H2) from water under solar light irradiation. This process of fuel production is clean, potentially cost-effective, and environment-friendly. At present, however, current technologies are unable to meet the industrial requirements because of high cost, low photoresponse, and insufficient catalytic performance. Among water splitting photocatalysts, CdS is considered to be an interesting and important material owing to its low cost, prominent catalytic activity, high absorption in the visible spectrum, and the suitable positions of its conduction (CB) and valence (VB) bands. There are, however, some associated problems such as the rapid recombination of photogenerated electron–hole pairs and photocorrosion that have severely hampered its practical usage. The efficient conversion of water to H2 depends on the extent to which the charge carriers, especially the electrons, are first generated and then have sufficient life-time for their effective utilization. This review highlights work over the past several years to improve the photocatalytic efficiency and stability of CdS for H2 production from water

    ASSIMILATING GEOSPATIAL METAMODEL AND INVENTORY MAPPING FOR NON-STRUCTURAL MITIGATION OF LANDSLIDE

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    In Malaysia, issues related to disaster management are always given attention in society and by the responsible parties. However, in general, citizen do not think of the consequential impact of disaster due to less of knowledge regarding the early phase in disaster management. Therefore, citizen in those areas will be more vulnerable to landslide as the citizen face difficulties in identifying specific areas with the tendency of landslides. This paper presents a geospatial metamodel approach for non-structural mitigation of landslide using data from airborne LiDAR and aerial photograph. Disaster management metamodel with geospatial element combines activity for managing disaster along with geospatial database that makes it handy for appreciating the metamodel. On the other hand, the digital terrain model (DTM) from LiDAR and aerial photograph is required to produce landslide inventory mapping. The case study area is located in Kundasang, Sabah, where landslides occur frequently. In order to get better visual in identifying landslides in the study area, three types of data are required to carry out image interpretation. The three types of data are hillshade, topographic openness and colour composite. The result of the landslide inventory map shows that there are five types of landslide, which is debris flow, debris fall, mud flow, deep-seated landslide and shallow landslide. Finally, the result of landslide inventory map will be integrated into the developed metamodel for presentation to the users. This landslide inventory map is used as a non-structural mitigation step in one of disaster management phases that is suitable to prepare and use in mitigating the landslide hazard impact

    Electromagnetic Interference (EMI) Analysis on Surface Roughness of 3C-Silicon Carbide (3C-SiC) Deposited on Silicon (Si) Substrate

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    Electronic devices may produce undesirable electromagnetic (EM) interference which can degrade the system performance and also affect human health. In this paper, the potential property of 3C-Silicon Carbide (3C-SiC) as the microwave absorbing material is investigated. The reflection coefficient, Г of 3C-SiC has been measured using an open-ended coaxial sensor. The substrates consisted of films of 3C-SiC of two different thicknesses (0.265µm and 0.285µm) with both polished and unpolished surfaces. The measurements were taken in the frequency range within 1.4 GHz to 18.8 GHz at room temperature. A continuous decrease in the reflection coefficient was measured in 3C-SiC as the frequency increased to 18.8GHz. The results have shown that the rougher surface of unpolished 3C-SiC of 0.285µm thickness could be applied as microwave absorbing material

    Knee joint impedance hybrid modeling and control of Functional Electrical Stimulation (FES)-cyclingfor paraplegic: free swinging trajectory

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    Functional electrical stimulation (FES) has been used to restore the function of paralyzed muscles due to spinal cord injury (SCI). FES induced movement control is a significantly challenging area due to complexity and non�linearity of musculoskeletal system. A crucial issue of FES is the control of motor function by the artificial activation of paralyzed muscles due to the various characteristics of the underlying physiological/biomechanical system. Muscle response characteristics are nonlinear and time-varying with fatigue issues. In this approach only the quadriceps muscle is stimulated to perform the trajectory motion. This paper presents the initial development of control strategies using FLC and GA in order to optimize the system by FES�cycling trajectory control via Analog Digital Converter,ADC

    Microwave Dielectric and Reflection Characterization on Silver Grunter (Pomadasys hasta) and Tilapia (Oreochromisniloticus) Fish Scale for Potential Use as Scaffold

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    Hydroxyapatite from fish scale was studied and reported of its potential in bone scaffold or regenerative material. Fish scale as a source of collagen and valuable matrix proteins in the pharmaceutical and cosmetic industries is overwhelmingly studied among researchers. In this work, dielectric and reflection measurement was conducted on fish scale from Silver Grunter (Pomadasys hasta) and Tilapia (Oreochromisniloticus) fish ranging from 200 MHz to 20 GHz using Agilent E8362B PNA Network Analyzer in conjunction with an Agilent 85070E High Temperature Probe. The fish scale was prepared as sample under test prior to measurements. Dielectric constant, and loss factor increase with frequency. Meanwhile, the measured magnitude and phase of reflection coefficient that acquired through reflection measurement decrease when frequency increases. On the other hand, both fish scales were characterized as crystalline structure via X-ray diffraction analysis. It is important in analyzing dielectric mechanism occurs in fish scale
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