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139 results for “M.C. Ong”
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Research ArticleOpen accessIn the author namesNew Schiff Bases with Pyridine Core: Spectral, Thermal and Optical CharacterizationsSie-Tiong Ha, Lay-Khoon Ong, Yip-Foo Win et al.Problem statement: Numerous studies have been conducted on the Schiff base's alkyl and alkyloxy possessing aromatic core. However, the thermo tropic properties of Schiff base's ester (or alkanoyloxy) with pyridine core was rare studied. Approach: To study spectral, thermal and optical behaviors of Schiff base ester possessing heterocyclic (pyridine) terminal core. A series of 4-[(pyridin-3-ylmethylene) amino] phenylalkanoates were prepared and … …American Journal of Applied Sciences, Vol. 7, Issue 5 · 31 May 2010 · 7,469 accessesView PDFCite
Research ArticleOpen accessIn the author namesBasic and Reactive Dyes Sorption Enhancement of Rice Hull through Chemical ModificationSiew-Teng Ong, Pei-Sin Keng, Chnoong-Kheng LeeProblem statement: Many studies have been conducted on the removal of either anionic or cationic dyes. However, as a mixture of dyes does commonly exist together in wastewater, therefore it is of great interest to have a material that can remove both types of dyes. Approach: To prepare an inexpensive and efficient sorbent by chemically modifying rice hull for the … …American Journal of Applied Sciences, Vol. 7, Issue 4 · 30 Apr 2010 · 7,793 accessesView PDFCite
Research ArticleOpen accessIn the author namesConcentration of Zn, Cu and Pb in Some Selected Marine Fishes of the Pahang Coastal Waters, MalaysiaB. Y. Kamaruzzaman, M. C. Ong, S. Z. RinaProblem statement: Heavy metals constitute one of the most hazardous substances that could be accumulated in biota. Fish populations exploited by man often live in coastal area environments that contain high levels of heavy metals, coming from human activities such as industrial and agricultural wastes. A problem to deal when using fishes as biomonitors of heavy metals is the relationship … …American Journal of Applied Sciences, Vol. 7, Issue 3 · 31 Mar 2010 · 10,011 accessesView PDFCite
Research ArticleOpen accessIn the author namesNew Mesogenic Schiff Base Esters with Polar Chloro Substituent: Synthesis, Thermotropic Properties and X-Ray Diffraction StudiesSie-Tiong Ha, Lay-Khoon Ong, Yasodha Sivasothy et al.Problem statement: Many studies have been conducted on the Schiff base’s alkyl and alkyloxy possessing terminal halogen substituent. However, the thermotropic properties of Schiff base’s ester (or alkanoyloxy) with chloro terminal group remained unstudied. Approach: Synthesis a series of new Schiff base ester possessing polar chloro group and investigate its mesomorphic properties. The title compounds were prepared via condensation and … …American Journal of Applied Sciences, Vol. 7, Issue 2 · 28 Feb 2010 · 12,958 accessesView PDFCite
Research ArticleOpen accessIn the author namesAn Assessment of Metals (Pb and Cu) Contamination in Bottom Sediment from South China Sea Coastal Waters, MalaysiaM. C. Ong, B. Y. KamaruzzamanProblem statement: The accumulation of metal contaminants in sediments can pose serious environmental problems to the surrounding areas. Trace metal contamination in sediment could affect the water quality and the bio-assimilation and bioaccumulation of metals in aquatic organisms, resulting in potential long-term implications on human health and ecosystem. Approach: About 154 bottom sediment samples were collected using Smith McIntyre in … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 7,995 accessesView PDFCite
Research ArticleOpen accessIn the author namesExplorations on Web UsabilityK K. Teoh, T. S. Ong, P. W. Lim et al.The area of web usability has long intrigued researchers. It has been widely accepted that for a website to be successful, the level of usability has to be high. The reason is because of poorly designed website. While many web designers largely fall on their prior experience to tell if a web site design is good or bad, there is … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,574 accessesView PDFCite
Research ArticleOpen accessIn the author namesSeasonal Distribution of Organic Carbon in the Surface Sediments of the Terengganu Nearshore Coastal AreaS. Hasrizal, B. Y. Kamaruzzaman, I. Sakri et al.Problem statement: The distribution of organic carbon in the surface sediment is a crucial indicator for current productivity in the ocean especially in the nearshore area. The difference of organic carbon in the surface sediment reflects the influence of current movement on the bottom sediment. Approach: This study was carried out to oversee the difference of organic carbon distribution during … …American Journal of Environmental Sciences, Vol. 5, Issue 1 · 28 Feb 2009 · 7,477 accessesView PDFCite
Research ArticleOpen accessIn the author namesGeochemistry of Sediment in the Major Estuarine Mangrove Forest of Terengganu Region, MalaysiaB.Y. Kamaruzzaman, M.C. Ong, M.S.Noor Azhar et al.Surface sediments collected from seven estuarine mangrove forests of Terengganu region (100 sampling points) were anaylzed for Pb, Cu and Zn using the sensitive Inductively Coupled Plasma Mass Spectrometer (ICP-MS). The average concentration of Pb, Cu and Zn were 10.5±7.12 µg g-1 dry weights, 31.1±16.5 µg g-1 dry weights and 20.8±13.3 µg g-1 dry weights, respectively. The statistical analysis of … …American Journal of Applied Sciences, Vol. 5, Issue 12 · 31 Dec 2008 · 7,323 accessesView PDFCite
Research ArticleOpen accessIn the author namesRecent Sedimentation Rate and Sediment Ages Determination of Kemaman-Chukai Mangrove Forest, Terengganu, MalaysiaB.Y. Kamaruzzaman, M.C. OngTwo 20 cm sediment cores were collected with a D-section corer in the Kemaman-Chukai mangrove forest and analyzed for 210Pbex (excess 210Pb) in order to understand the sedimentation pattern. The activities of 210Pb along with the 208Po tracer were measured by Alpha Spectrometry on a silicon surface barrier detector connected to a multi channel analyzer. Sedimentation rates were determined applying … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 3 · 30 Sep 2008 · 9,305 accessesView PDFCite
Research ArticleOpen accessIn the author namesBioceramics for Tissue Engineering Applications-A ReviewSunho Oh, Namsik Oh, Mark Appleford, Joo L. OngThree dimensional (3-D) scaffolds have been explored in an attempt to persuade the body to heal or repair tissues that do not do so spontaneously. Considerable advances in tissue engineering and regeneration have been accomplished over the last decade. However, the material and 3-D scaffolds ideal for optimal regeneration of missing or lost tissues has not been identified. While current … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 2 · 30 Jun 2006 · 10,423 accessesView PDFCite