Johor Bahru, Malaysia

University of Technology Malaysia
Johor Bahru, Malaysia

Universiti Teknologi Malaysia is the oldest public engineering and technological university in Malaysia. The university specializes in technical studies, with separate faculties for the engineering divisions such as Civil, Mechanical, Electrical, Chemical and Biomedical engineering. It also has faculties for Education, Pure science, Management, and Human Resources Development. It is the country's major source of graduate engineers and similar professionals.With over 20,000 students on campus, more than 25% of them are postgraduates. Since the 1990s, the number of foreign students, particularly from neighbouring Asian countries, the Middle East, and Africa, has been increasing, especially in postgraduate programs. UTM graduates have gone on to many academic and professional institutions across the world.Universiti Teknologi Malaysia is located in Kuala Lumpur, the capital city of Malaysia, and Johor Bahru, the southern city in Iskandar Malaysia, in the south of Peninsular Malaysia. Wikipedia.

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Agency: European Commission | Branch: FP7 | Program: CP-SICA | Phase: NMP.2012.2.2-6 | Award Amount: 5.12M | Year: 2012

Limpid aims at generating new knowledge on photocatalytic materials and processes in order to develop novel depollution treatments with enhanced efficiency and applicability. The main goal of LIMPID is to develop materials and technologies based on the synergic combination of different types of nanoparticles (NPs) into a polymer host to generate innovative nanocomposites which can be actively applied to the catalytic degradation of pollutants and bacteria, both in air or in aqueous solution. Single component nanocomposites including TiO2 NPs are already known for their photocatalytic activities. LIMPID will aim at going one big step further and include, into one nanocomposite material, oxide NPs and metal NPs in order to increase the photocatalytic efficiency and allow the use of solar energy to activate the process. One of the main challenge of LIMPID is to design host polymers, such as hybrid organic inorganic and fluorinated polymers, since photocatalysts can destroy the organic materials. The incorporation of NPs in polymers will allow to make available the peculiar nano-object properties and to merge the distinct components into a new original class of catalysts. At the same time nanocomposite formulation will also prevent NPs to leach into water and air phase, thus strongly limiting the potential threat associated to dispersion of NPs into the environment. Therefore nanocomposites developed in LIMPID will be used as coating materials and products for the catalytic degradation of pollutants and bacteria in water and air, i.e. deposited onto re-usable micro-particles, or in pollutant degradation reactors, and even onto large surfaces, as a coating or paint. In addition such new class of nanocomposites will be also exploited for the fabrication of porous membranes for water treatment. In order to fulfill its objectives, the LIMPID consortium has been designed to combine leading industrial partners with research groups from Europe, ASEAN Countries and Canada.

Agency: European Commission | Branch: FP7 | Program: CP-SICA | Phase: NMP.2012.2.2-6 | Award Amount: 4.88M | Year: 2013

The project 4G-PHOTOCAT allies the expertise of 7 academic and 3 industrial partners from 5 EU countries (Germany, United Kingdom, Czech Republic, Poland, and Finland) and 2 ASEAN countries (Malaysia and Vietnam) for the development of a novel generation of low-cost nano-engineered photocatalysts for sunlight-driven water depollution. Through rational design of composites in which the solar light-absorbing semiconductors are coupled to nanostructured redox co-catalysts based on abundant elements, the recombination of photogenerated charges will be suppressed and the rate of photocatalytic reactions will be maximized. In order to achieve fabrication of optimal architectures, advanced chemical deposition techniques with a high degree of control over composition and morphology will be employed and further developed. Furthermore, novel protocols will be developed for the implementation of the photocatalysts into a liquid paint, allowing for the deposition of robust photoactive layers onto flat surfaces, without compromising the photoactivity of immobilized photocatalysts. Such paintable photoreactors are envisaged particularly as low-cost devices for detoxification of water from highly toxic persistent organic pollutants which represent a serious health issue in many remote rural areas of Vietnam and other countries. The 4G-PHOTOCAT project will provide novel scientific insights into the correlation between compositional/structural properties and photocatalytic reaction rates under sunlight irradiation, as well as improved fabrication methods and enhanced product portfolio for the industrial partners. Finally, 4G-PHOTOCAT will lead to intensified collaboration between scientists working at the cutting edge of synthetic chemistry, materials science, heterogeneous photocatalysis, theoretical modelling, and environmental analytics, as well as to unique reinforcement of cooperation between scientists and industry partners from EU and ASEAN countries.

Nasef M.M.,University of Technology Malaysia | Nasef M.M.,Malaysia Japan International Institute of Technology
Chemical Reviews | Year: 2014

Fuel cell technology is one of the key emerging technologies that is currently attracting tremendous effort with the aim to provide alternative environmentally friendly and efficient power sources. The worldwide move away from conventional fossil fuel combustion power generation technologies is driving much of this important research. The replacement of a liquid electrolyte by PEM in such systems has eliminated the corrosion problems and conferred on the system additional advantages such as simplicity of construction, compactness, and quick self-starting at ambient temperatures. The successful performance of these kinds of fuel cell systems depends critically on the role played by the PEM. The second category involves the formation of acid-base complexes that provide a viable alternative for membranes that can maintain high conductivity at elevated temperatures without suffering from dehydration effects.

Tie S.F.,University of Technology Malaysia | Tan C.W.,University of Technology Malaysia
Renewable and Sustainable Energy Reviews | Year: 2013

The issues of global warming and depletion of fossil fuels have paved opportunities to electric vehicle (EV). Moreover, the rapid development of power electronics technologies has even realized high energy-efficient vehicles. EV could be the alternative to decrease the global green house gases emission as the energy consumption in the world transportation is high. However, EV faces huge challenges in battery cost since one-third of the EV cost lies on battery. This paper reviews state-of-the-art of the energy sources, storage devices, power converters, low-level control energy management strategies and high supervisor control algorithms used in EV. The comparison on advantages and disadvantages of vehicle technology is highlighted. In addition, the standards and patterns of drive cycles for EV are also outlined. The advancement of power electronics and power processors has enabled sophisticated controls (low-level and high supervisory algorithms) to be implemented in EV to achieve optimum performance as well as the realization of fast-charging stations. The rapid growth of EV has led to the integration of alternative resources to the utility grid and hence smart grid control plays an important role in managing the demand. The awareness of environmental issue and fuel crisis has brought up the sales of EV worldwide. © 2012 Elsevier Ltd All rights reserved.

Chua L.S.,University of Technology Malaysia
Journal of Ethnopharmacology | Year: 2013

Ethnopharmacological relevance Rutin is a common dietary flavonoid that is widely consumed from plant-derived beverages and foods as traditional and folkloric medicine worldwide. Rutin is believed to exhibit significant pharmacological activities, including anti-oxidation, anti-inflammation, anti-diabetic, anti-adipogenic, neuroprotective and hormone therapy. Till date, over 130 registered therapeutic medicinal preparations are containing rutin in their formulations. This article aims to critically review the extraction methods for plant-based rutin and its pharmacological activities. This review provides comprehensive data on the performance of rutin extraction methods and the extent of its pharmacological activities using various in vitro and in vivo experimental models. Materials and methods Literatures including journals, patents, books and leaflets reporting on rutin from natural resources are systematically reviewed, particularly in the aspect of its extraction methods and biological activities. Factors affecting the efficiency of rutin extraction such as extraction temperature, duration and solvent to sample ratio are presented based on the findings of previous studies. The observed biological activities followed by clear explanation are also provided accordingly. Results The biological activities of rutin varied largely dependent on the geographical and plant origins. The complexity of natural rutin has impeded the development of rutin derived drugs. The detail mechanism of rutin in human body after consumption is still unclear. Therefore, studies are intensively carried out both in vitro and in vivo for the better understanding of the underlying mechanism. The studies are not limited to the pharmacological properties, but also on the extraction methods of rutin. Many studies have focused on the optimization of extraction method to increase the extraction yield of rutin. Currently, the performances of modern extraction approaches have also been compared to the conventional heat reflux method as a benchmark. Conclusion There are various extraction methods for plant-based rutin ranging from conventional method up to the use of modern techniques such as ultrasound, mechanochemical, microwave, infrared and pressurized assisted methods. However, proper comparison between the methods is very difficult because of the variance in plant origin and extraction conditions. It is important to optimize the extraction method in order to produce high yield and acceptable purity of rutin with a reasonable cost. Even though rutin has been proven to be effective in numerous pharmacological activities, the dosage and toxicity of rutin for such activities are still unknown. Future research should relate the dosage and toxicity of rutin for the ethnobotanical claims based on the underlying mechanisms. © 2013 Elsevier Ireland Ltd.

Mahdi Ziaei S.,University of Technology Malaysia
Renewable and Sustainable Energy Reviews | Year: 2015

The financial crisis is considered a major economic issue and energy consumption and pollution are believed to be one of the most important environmental concerns in the new millennium. The review on investigation of the nexus among energy consumption, GDP growth, financial development and CO2 emission has shown no definitive conclusion. Apart from that, the effects of financial development on energy consumption are not yet understood properly. Thus, this article investigates the effects of financial indicator shocks i.e. credit market and stock market shocks on energy consumption and carbon dioxide (CO2 emissions) and vice versa. Panel Vector Auto Regression (PVAR) models were employed to investigate the relationships in 13 European and 12 East Asia and Oceania countries from 1989 to 2011. Findings emphasize the important role of CO2 emission and energy consumption on explaining each other's deviation, with only the degree of effect differing. Although energy consumption and CO2 emission shocks on financial indicators such as private sector credit is not very pronounced in both groups of countries, but the strength of energy consumption shock on stock return rate in European countries is greater than East Asian and Oceania countries. Conversely shocks to stock return rate influence energy consumption especially in long horizon in case of East Asia and Oceania countries. © 2014 Elsevier Ltd.

Prawoto Y.,University of Technology Malaysia
Computational Materials Science | Year: 2012

This paper summarizes research work related to materials with zero, or negative Poisson's ratio, materials which are also referred to as auxetic materials. This review puts an emphasis on computations and aspects of their mechanics. It also considers diverse examples: from large structural, to biomedical applications. It is concluded that auxetic materials are technologically and theoretically important. While the development of the research has been dominated by periodic/ordered microstructures, the author predicts that future research will be in the direction of disordered microstructures utilizing the homogenization method. © 2012 Elsevier B.V. All rights reserved.

A model and access method for devices to be homogenous irrespective whether they be character or block types. The access method is closely coupled between a host processor and the input/output (I/O) ports either through the data ports to the FIFOs (First-In-First-Out), or the control ports of the devices. Data transfers to the devices are effected through their data ports, whilst the control words in the form of bytecodes are sent through the control ports. The access method enables parallel processing within independent devices as they can execute device specific codes in parallel with the system software or kernel. The bytecodes are portable across hardware platforms since they serve as command words for configuration of devices and command instructions for the burst mode transfer of data between devices and a processor. With an interplay of just one I/O arbiter consisting of FIFOs and port engines to which devices are attached, presents a homogenous view of devices as a FIFO oriented access method that supports synchronous burst data transfers, removing the physical device driver codes in the kernel and system memory space.

A processor or CPU architecture that implements many enabling technologies proven to enhance data through put supporting the synchronous burst data transfer. The Input-Output (I/O) is uniformly viewed and treated as an individual First-In-First-Out (FIFO) device. Pluralities of memory areas are implemented for user stack, kernel stack, interrupt stack and procedure call stack. Only one I/O arbiter is necessary for a CPU model that arbitrates between a plurality of FIFOs substituting data caches for on-chip implementation, thus eliminating traditional data transfer techniques using Direct-Memory-Access (DMA), bus control and lock signals leaving just the interrupt signals and the new synchronous signals for an easy and streamlined system design and CPU model. Supporting an interrupt-driven, FIFO-based I/O and synchronous burst data transfer the CPU employs a simple linear large register sets without bank switching.

University of Technology Malaysia | Date: 2015-09-30

An I/O (input/output) bus arbiter to be used in conjunction with a compatible CPU (processor) to effect burst mode data transfers in all I/O accesses that remove the need for DMA (Direct-Memory-Access) signals, Bus-request/Bus-grant signals, and bridges consequently removing the need for a bus system to connect peripherals such as the PCI (Peripheral-Connect-Interface). The I/O arbiter consists of an interrupt controller with circular buffers, FIFOs (First-In-First-Out) and port engines for directly attaching devices with proper interface buffers, together with a compatible CPU interrupt signals, and synchronous data transfers with only this one arbiter.

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