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Kuala Terengganu, Malaysia

The Universiti Malaysia Terengganu or UMT, formerly known as Kolej Universiti Sains dan Teknologi Malaysia or KUSTEM, in Malaysia, was officially chartered on February 1, 2007. Wikipedia.


Arai T.,University of Malaysia, Terengganu
Reviews in Fish Biology and Fisheries | Year: 2014

Marine biological diversity in the South China Sea is immensely rich, with at least 3,365 species of marine fishes, more than one-third of these are coral reef fish. Understanding the present status of coral reef fishes in the South China Sea in terms of their biodiversity and abundance is therefore important for the sustainable use of coral reef resources in the future. This paper is an overview of the diversity, species composition and species richness of coral reef fishes in the Malaysian South China Sea. A number of coral reef fishes consisting of 35 families and 86 species have been categorised as extinct or threatened. Natural and anthropogenic factors are affecting coral reefs and their ecosystems, with overfishing, blast fishing, poison fishing and trawling considered the major threats in Malaysia. In the Malaysian South China Sea, blast fishing is still practiced in Sabah, East Malaysia (Borneo), and the activity is considered a serious issue. A number of coral reefs are protected as national marine parks, especially in West Malaysia (Peninsular Malaysia), which could help maintain the biomass of coral reef fishes. Strict enforcement of fishery regulations and management, and more national marine parks are needed to conserve and enhance coral reef fishes, especially in the Sabah area of East Malaysia. © 2014, Springer International Publishing Switzerland. Source


Arai T.,University of Malaysia, Terengganu
Reviews in Fish Biology and Fisheries | Year: 2014

After Schmidt's discovery of the spawning area of the Atlantic eels Anguilla anguilla and A. rostrata, the search for the Japanese eel A. japonica began in the Pacific Ocean. In 1991, the spawning area of the Japanese eel was determined to be the western North Pacific. Because of enthusiastic research, eggs and maturing eels have been collected in the Japanese eel. These findings are the first for one of the 19 freshwater eels. The population sizes of the Japanese and Atlantic eels are linearly decreasing. Thus, these eel population sizes are considered outside of safe biological limits, and the current fisheries are not sustainable. Artificial propagation has not yet succeeded for the freshwater eels. Stock assessment and management of the European eel have received increasing attention; however, such assessments and management of the Japanese eel have not yet been seriously considered. This paper is an overview of the results of intensive spawning ground investigations of the Japanese eel and describes how the outcomes of these studies have contributed not only to biological interests but also to stock enhancement. During the past 20 years of expeditions, noticeable findings have only been collected for wild eggs and mature adult specimens in spite of the expenditure of large research grants and the large amounts of time invested. The outcomes throughout an expedition do not necessarily contribute to the development and improvement of artificial breeding techniques and stock enhancement. Thus, eel research should be more focused on the studies related to eel stock management. © 2013 Springer Science+Business Media Dordrecht. Source


Ismail M.,University of Malaysia, Terengganu
Materials Today: Proceedings | Year: 2016

Systematic investigations on the hydrogen storage properties of AlH3 destabilized MgH2 is investigated. It is found that the MgH2/AlH3 (2:1) composite system showed improved dehydrogenation performance compared with that of as-milled MgH2 alone. The dehydrogenation process in the MgH2/AlH3 composite can be divided into two stages. During the first dehydrogenation process, AlH3 decomposed first to produce Al with hydrogen release. In the second dehydrogenation stage, the as-formed Al phase reacts with MgH2 to form Mg17Al12 phase at a temperature of about 250 °C, which is about 80 °C lower than the decomposition temperature of as-milled MgH2. The second step decomposition enthalpy of the system was determined by differential scanning calorimetry measurements and the enthalpies change to be 45.0 kJ mol-1 H2, which is smaller than that of MgH2 alone (75.7 kJ mol-1 H2). Kissinger analysis indicated that the apparent activation energy, EA, for the MgH2-relevent decomposition in MgH2-AlH3 composite was 94.0 kJ mol-1, which is 68.0 kJ mol-1 less than for as-milled MgH2 (162.0 kJ mol-1). Rehydrogenation processes show that Mg17Al12 is fully reversible. It is believed that the formation of the Al12Mg17 phase during the dehydrogenation process alters the reaction pathway of the MgH2-AlH3 (2:1) composite system and improves its thermodynamic properties accordingly. © 2016 The Authors. Source


Ismail M.,University of Malaysia, Terengganu
International Journal of Hydrogen Energy | Year: 2014

In the present work, the hydrogen storage properties of MgH2-X wt.% FeCl3 (X = 5, 10, 15 and 20) are investigated experimentally. It is found that the MgH2 + 10 wt.% FeCl3 sample exhibits the best comprehensive hydrogen storage properties, in terms of the onset dehydrogenation temperature, the hydrogen amounts de/reabsorbed as well as the relative de/rehydrogenation rates. The onset dehydrogenation temperature of the 10 wt.% FeCl3-doped MgH2 sample is reduced by about 90 C compared to the as-milled MgH2, and the sorption kinetics measurements indicate that the FeCl3-doped sample displays an average dehydrogenation rate 5-6 times faster than that of the undoped MgH2 sample. Higher levels of doping introduce negative effects, such as lower capacity and slower absorption/desorption rates compared to samples with lower FeCl3 doping levels. The apparent activation energy for hydrogen desorption is decreased from 166 kJ•mol-1 for as-milled MgH 2 to 130 kJ•mol-1 by the addition of 10 wt.% FeCl3. It is believed that the improvement of the MgH2 sorption properties in the MgH2/FeCl3 composite is due to the catalytic effects of the in-situ generated Fe species and MgCl2 that are formed during the heating process. © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights. Source


Ismail M.,University of Malaysia, Terengganu
Energy | Year: 2015

In this study, the effect of LaCl3 on the hydrogen storage properties of MgH2 prepared by ball milling wasinvestigated for the first time. It was found that the MgH2+10wt.% LaCl3 sample started to decompose at around 300°C, which was 50°C lower than in as-milled MgH2. For desorption kinetics, the LaCl3-doped MgH2 composite sample released about 4.2wt.% hydrogen at 320°C after 5min dehydrogenation, while the as-milled MgH2 only released about 0.2wt.% hydrogen for the same temperature and time. Meanwhile, a hydrogen absorption capacity of 5.1wt.% was reached at 300°C in 2min for the LaCl3-doped MgH2 sample. In contrast, the ball-milled MgH2 only absorbed 3.8wt.% hydrogen at 300°C in 2min. The activation energy of dehydrogenation was 166.0kJ/mol for the as-milled MgH2 and 143.0kJ/mol for the 10wt.% LaCl3-added MgH2, indicating that the LaCl3 additive decreased the activation energy for the hydrogen desorption of the MgH2. The improved hydrogen storage properties of the MgH2 in the presence of LaCl3 is believed to be due to the catalytic effects of the La-Mg alloy and MgCl2 that were formed in situ during the heating process. © 2014 Elsevier Ltd. Source

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