1,841 research outputs found

    Battery Management System For Water Quality Monitoring System In Aquaculture Application

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    This project proposes a Power Management System (PMS) for water quality monitoring systems in aquaculture applications. The proposed system requires power supply 12V, 200mAh with five sensors, which are ammonium sensor, temperature sensor, water level sensor, dissolve oxygen sensor and pH sensor. Projek ini mencadangkan sistem pengurusan kuasa untuk sistem pengawasan kualiti air dalam aplikasi akuakultur. Sistem kawalan kualiti air ini memerlukan bekalan kuasa 12V, 200mAh yang mengandungi 5 jenis penderia iaitu, penderia amonia, penderia suhu, penderia paras air, penderia kandungan oksigen dan penderia pH

    Application of Iterative Technique (IT) Using SPT N-Values and Correlations for Analysis of Tip and Shaft Capacity for an Axially Loaded Pile in Sand

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    This is a theoretical method on how to analyze the axial capacity (tip and shaft) of a single pile using iterative technique on SPT-N values and SPT-N correlation. This technique allows the engineer who conducts the analyses to control the input and output information of the analyses in a systematic and organized fashion. This method is also very helpful especially for the development of pile capacity prediction using reliability method. Research on the subject is being carried out at Universiti Putra Malaysia (UPM)

    Reduction of Energy Consumption By Energy Audit And Energy Management

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    This report discusses on research regarding energy audit and energy management. In this project, the project studies on the energy consumption of a pharmaceutical factory in Selangor. This project is focused on proposing a method for energy audit and suitable suggestion for energy saving and management. In order to achieve this objective, this report first discusses the potential of energy audit and energy saving measure that can be implement on site. The factory aims to reduce 5% of the monthly consumption. A details analysis of the collected data was illustrated in tables and graphs. The data was collected using power analyzer at the incoming supply of the equipment. From the data, it show that for this factory operation, the most consumption area of electricity is on Air Handling Unit(AHU) and lighting. Retrofit measures is taken such as implementing of Variable Speed Drives(VSD) for AHU. The installation can save up to 40% of the energy usage of that specific unit with the payback period between 8 month to 18 months. Delamping is a good measure in order to reduce the energy consumption for lighting. Malaysian Standard-Code Of Practice On Energy Efficiency And Use Of Renewable Energy For Non-Residential Buildings, MS 1525: 2001 is referred for the luminance minimum value. The factory achieved 2% of reduction in total energy consumption monthly. As conclusion, energy audit is the start point of the energy management program that aims to increase the energy efficiency of a facility by recognizing any possibilities to cut down the energy usage

    The Determination of Pile Capacity Using Artificial Neural-net: An Optimization Approach

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    From standard static formula for bearing capacity of a single pile foundation, an algorithm using a reliability approach for the determination of service load was developed. Using the developed algorithm, the safety measures involved are such as reliability index and the probability of failure; instead of only factor of safety if conventional deterministic approach is used. In this study, the developed algorithm is further expanded to include computation of the weight-matrix of a sequential associative feedback-type neural net model for the determination of service load of a single pile is introduced. The proposed technique concludes improved efficiency over the conventional method of commissioning the functional formula of the weights by exploiting the structural properties of the matrices appeared in the codification of the service load to a single pile problem as a quadratic zero-one optimization program. Those structural attributes are distinguished and described in terms of template-matrix contributions of the constraint functions of the quadratic optimization, to the weight-matrix asynchronous auto-associative neural net It is stated by using those templates, the weight matrix can be taken in intuitively. Performance results of this research study reveal that neural net deterministic approach could be a better choice for implementation in identifying the required weight-matrix

    Conductivity Studies on K-Carrageenan-Methyl Cellulose Blend as Bio-Polymer Electrolyte / Rosnah Zakaria and Ab Malik Marwan Ali

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    Solid polymer-based electrolyte materials are a great interest due to their many interesting characteristics such as flexibility, and it is easily prepared into films with a large surface area. Two sets of k-carrageenan-methyl cellulose samples were prepared using the solution casting method. Set 1, the wt% of k-Carrageenan was fixed at 0.1 wt%, while methyl cellulose and NH4I was varied. Set 2, the wt% of methyl-cellulose was fixed to 0.1 wt%, and the carrageenan and NH4I were varied. The functional group of samples were studied using FTIR spectroscopy, and the ionic conductivity was studied using impedance spectroscopy, EIS at room temperature. FTIR spectra from set 1 show a small hump at between the 1500 cm-1 to 1000 cm-1 spectra’s which O=S=O symmetrical vibration from methyl cellulose component. This hump was shifted to higher wavenumber due to the increasing of NH4I wt% in the samples. The second region of set 2’s spectra shows the wavenumber between 2000 cm-1 to 1500 cm-1 is the deformation of H-O-H band interactions and its wavenumber decreasing as the addition of salts increasing. The third region of spectra between 1500 cm-1 to 1000 cm-1 represents the band of O=S=O symmetrical vibration. This bands shifted to the lower wavenumber due to addition of salts, and it became less intense towards salt addition. On the other hand, the best conductivity is 6.00 x 10-8 S cm-1 which belongs to B2 of set 2 with the composition of 0.3 wt% k-carrageenan with 0.1 wt% methylcellulose and 0.6 wt% NH4I salt and the lowest conductivity is 3.19 x 10-9 S cm-1 which its composition is 0.1 wt% k-carrageenan with 0.4 wt% methylcellulose and 0.5 wt% NH4I salt in sample D1 of set 1. In conclusion, the optimum component by weight percentage of k-carrageenan: methyl cellulose: NH4I is 0.3:0.1:0.6

    Probabilistic Circuit Architecture Using Statistical Learning

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    The main achievement of this project is the generalization of probabilistic circuit architecture. In other words, in mapping MRF into CMOS circuitry, one must fulfill two requirements; first bistable storage element for each logic state and second feedback network for belief propagation

    Openness to experience - a moderator between social commerce success factors and customer satisfaction relationship: facebook brand page platform / Ariff Md. Ab. Malik, Hanitahaiza Hairuddin and Nurfaznim Shuib.

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    Nowadays, the role of social media in marketing strategies is undeniable. Facebook brand page is one of the platforms used by the marketers to promote their products. The purpose of this study is to investigate whether the Openness to Experience personality moderates the relationship between Information System Success (ISS) factors and customer satisfaction using a sample of 354 customers from three different Facebook brand pages. The result found that the Openness to Experience personality effect the relationship between ISS factors and customer satisfaction. Meanwhile, the Information Quality is the most important factor that influences the customer satisfaction towards social media applications

    Age- and activity-related differences in the abundance of Myosin essential and regulatory light chains in human muscle

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    Traditional methods for phenotyping skeletal muscle (e.g., immunohistochemistry) are labor-intensive and ill-suited to multixplex analysis, i.e., assays must be performed in a series. Addressing these concerns represents a largely unmet research need but more comprehensive parallel analysis of myofibrillar proteins could advance knowledge regarding age- and activity-dependent changes in human muscle. We report a label-free, semi-automated and time efficient LC-MS proteomic workflow for phenotyping the myofibrillar proteome. Application of this workflow in old and young as well as trained and untrained human skeletal muscle yielded several novel observations that were subsequently verified by multiple reaction monitoring (MRM).We report novel data demonstrating that human ageing is associated with lesser myosin light chain 1 content and greater myosin light chain 3 content, consistent with an age-related reduction in type II muscle fibers. We also disambiguate conflicting data regarding myosin regulatory light chain, revealing that age-related changes in this protein more closely reflect physical activity status than ageing per se. This finding reinforces the need to control for physical activity levels when investigating the natural process of ageing. Taken together, our data confirm and extend knowledge regarding age- and activity-related phenotypes. In addition, the MRM transitions described here provide a methodological platform that can be fine-tuned to suite multiple research needs and thus advance myofibrillar phenotyping

    Germination pattern of three Mangifera species

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    The germination patterns of three Mangifera species at the seedbed stage were described. Seeds of M. foetida (Bacang), M. odorata (Kuini) and clones of M. indica (Telur, Tangkai Panjang and Sala) were sown vertically with the dorsal edge in the sandy seedbed. Germination and seedling emergence appear to be regulated physically by the fibrous endocarp. The endocarp resistance to seedling emergence consequently resulted in seedling abnormalities, especially in strongly polyembryonic cultivar such as Sala. Seed position during sowing, to a certain extent, may reduce the percentage of occurrence of seedling abnormalities. Seedling height, leaf number and the number of days for the first leaf flush to become green were related to the number of seedlings produced per seed and were cultivar-specific

    A new superimposed topology for single phase wireless power transfer / Azman Ab Malik

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    Wireless Power Transfer (WPT) is a process of transferring electrical energy without using any physical wire or cable. There are two popular methods in WPT system which are Capacitive Power Transfer (CPT) and Inductive Power Transfer (IPT). The main problem in the WPT is to produce high power in a long distance. There are studies that achieved power tansmission of more than 2 meters and power transfer of high voltage more than lkV however it is limited to creation of inverter and converter, translation of project into simulation without a clear physical project and not abiding to allowed frequency. This is proven by observation that there is lack of technique being explained in innovation and limited technical information given. Hence the development of wireless power transfer is slow and its market potential is still unclear. In order for the wireless power transfer to be beneficial for the lifestyle of community, it should be produced according to specification and its ability to function should be put as priority. Therefore, the objective in this research is to develope a new topology known as superimposed technique in order to overcome the existing problem. Many researchers had designed an inverter with high power and high efficiency but in their research, it was found that the short distance has been used although the power produced is high. The energy transfer happens when the transmitter resonance with the receiver, hence the main element in WPT is a transmitter system. Higher voltage suppression by transmitter produce higher power and distance of transmission. Wireless Power Transfer is designed with capability to transfer 231 Watt electrical energy for each transmitter wirelessly. A huge number of experiments are required to be completed, hence statistical analysis is needed to reduce it. Taguchi method has been used in this experiment to reduce number of experiments, cost and time. Taguchi method has reduced 98% number of experiments and improved 10% output power. Based on WPT principle, one of the important parameter is a coil. Size of coil had been explored by increasing the diameter size. 16cm and 160cm diamater size of coil had been explored using algorithm approach by Taguchi method. Result shows that by increasing the diameter size the distance had been improved by 500%. During transmission of electricity, a few factors need to be considered such as barrier and environment. In order to identify the performance of WPT, the system had been embedded in soil as a comparison with open area. The performance of transferring electrical energy by embedment in soil is explored with the distance losses in range 1 % to 3%, losses for current in range 1.5% to 15% and voltage drop in range 3% to 10%. The losses is depending on the distance between transmitter and receiver. WPT system had been developed to support electrical energy from solar PV. Eventhough there are many software to identify the sun radiation but in real implementation, the manual inspection is needed. Based on HOMER analysis, annual average energy for sun radiation for daily data is 5.16kW/m2. Manual inspection covered three areas in north Peninsular Malaysia. Based on development for single coil, the power system was developed to transfer 4000Wp energy from solar pv. The name of the device given is 'The Chargiszi" where the purpose of the design is to supply electrical energy for mobile phone and laptop wirelessly. The minimum distance for power transfer is 130cm with efficiency of 18.42% with 42.55W (between transmitter and receiver) for ac voltage and 200cm for 5V application (14.7W). Receiver is one of the part to be used in order to avoid disconnected energy while transferring as an online power transfer. Hybrid system had been developed between online power transfer and energy storage to avoid disturbance. Design of power system based on requirement from user and enviroment must be considered before implementation of WPT technology
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