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2012

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Articles 19711 - 19740 of 22917

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Early Childhood Caries, Dietary Habits And Nutritional Status Of Toddlers : An Intervention Study In Kelantan / Ruhaya Hasan, Ruhaya Hasan Jan 2012

Early Childhood Caries, Dietary Habits And Nutritional Status Of Toddlers : An Intervention Study In Kelantan / Ruhaya Hasan, Ruhaya Hasan

Student Works (2010-2019)

The aim of this study was to assess the effectiveness of a health promotion intervention program (TIPTOP package) in preventing early childhood caries (ECC), to improve nutritional status and dietary habits among toddlers. The study design was an intervention prospective study and conducted in Tumpat and Pasir Mas districts in Kelantan. The intervention group was 2-3 year old toddlers in Tumpat and received the TIPTOP package, while the control group was in Pasir Mas and received the normal toddlers’ oral health program under the MOH. Baseline information on a proxy population of 527 preschool children (5-6 years old) showed that …

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Effect Of Sperm And Oocyte Factors On Intracytoplasmic Sperm Injection (Icsi) Performance In Mice And Goats / Nor Farizah Abdul Hamid, Nor Farizah Abdul Hamid Jan 2012

Effect Of Sperm And Oocyte Factors On Intracytoplasmic Sperm Injection (Icsi) Performance In Mice And Goats / Nor Farizah Abdul Hamid, Nor Farizah Abdul Hamid

Student Works (2010-2019)

Selected sperm and oocyte factors related were evaluated in ICSI experiments involving mouse and goat species in the present study. The mouse oocyte collection was conducted through oviduct retrieval, while the goat oocytes were retrieved via LOPU technique. The effectiveness of sperm capacitation chemical treatment (Heparin and Theophylline) for 1 hour and sperm movement (Rapid and Slow) were identified in both species. For oocyte factors, the effects of post-hCG injection durations (13-15 hours and 16-18 hours) in mice were studied. LOPU cycles (OR1, OR2 and OR3) and IVM durations (18-21 hours and 22-25 hours) were investigated in goats. In Experiments …

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Ecology Of Fishes In Tasek Bera, Pahang, Malaysia / Fatimah Abdullah, Fatimah Abdullah Jan 2012

Ecology Of Fishes In Tasek Bera, Pahang, Malaysia / Fatimah Abdullah, Fatimah Abdullah

Student Works (2010-2019)

The ecology of fishes was investigated in Tasek Bera (Lake Bera), a peat swamp ecosystem with three major habitats: (i) swamp forest dominated by Eugenia, (ii) Reed (Lepironia) and clumps of Pandanus stands and (iii) open waters fringed by submerged Utricularia. Limnological information and fish fauna of the lake was determined and the association of both data was done using canonical correspondence analysis (CCA).Mean values of water quality parameters for the entire study period (April 2004 to December 2005) were as follows: water temperature = 29.540 C ± 1.15; total suspended solids (TSS) = 19.38 mg/L ± 28.32; total dissolved …

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Phototrophic Bacteria Grown In Palm Oil Mill Effluent As Feed For Culturing Rotifers And Marble Goby Larvae / Loo Poh Leong, Poh Leong Loo Jan 2012

Phototrophic Bacteria Grown In Palm Oil Mill Effluent As Feed For Culturing Rotifers And Marble Goby Larvae / Loo Poh Leong, Poh Leong Loo

Student Works (2010-2019)

The culture of the highly priced marble goby Oxyeleotris marmorata (Bleeker) in the Asian region is currently beset by the poor supply of fingerlings which are largely collected from the wild, while larviculture based on conventional feeds has not been producing enough due to high larval mortality. Phototrophic bacteria (PB), an unconventional feed has not been seriously considered as an alternative feed despite being nutrient-rich. Thus, the overall objective of this study was to evaluate the feasibility and success of culturing larval marble goby and rotifer (Brachionus rotundiformis) using a selected PB species grown in palm oil mill effluent (POME) …

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Thermal Ramping Technique : A Facile Nanowires Synthesis Technique For Gas Sensing Applications / Zainal Abidin Bin Ali, Zainal Abidin Ali Jan 2012

Thermal Ramping Technique : A Facile Nanowires Synthesis Technique For Gas Sensing Applications / Zainal Abidin Bin Ali, Zainal Abidin Ali

Student Works (2010-2019)

Nanowires of SnO2 have been successfully synthesized using a modified, simplified and less complicated carbothermal reduction technique, namely thermal ramping technique. This technique is developed to ease the synthesis process of nanowires for the development of gas sensing device. Contrary to conventional carbothermal reduction technique, no inert gas as a carrier is required. Distance of source material to substrates parameter is also eliminated. This new technique introduces ramping parameter to the conventional technique to compensate the elimination of the carrier gas. SnO2 was chosen as the raw material due to its wide availability, low-cost and widely used in the sensing …

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Comparison Of Physical Parameters At 2 Selected Mangrove Areas In Carey Island / Siti Suraya Mansor, Siti Suraya Mansor Jan 2012

Comparison Of Physical Parameters At 2 Selected Mangrove Areas In Carey Island / Siti Suraya Mansor, Siti Suraya Mansor

Student Works (2010-2019)

This study is a comparison between physical parameters and soil characteristics of two mangrove habitats on Carey Island. Selected parameters were conducted at three stations in mangrove habitat (Site 1) along the Langat River which contain a good community of mangrove forest. Similar study was also conducted in a degraded mangrove habitat along eroding sea line (Site 2). In Site 1; the water parameters featured high and almost constant salinity, high water temperature, high conductivity but relatively low dissolved oxygen concentration and high TDS. On the other hand, Site 2 recorded high in salinity but lower water temperatures. Site 2 …

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Enzyme-Linked Immunosorbent Assays Using Recombinant Epstein-Barr Virus Antigens For Detection Of Nasopharyngeal Carcinoma In Malaysian Chinese / Lim Chun Shen, Chun Shen Lim Jan 2012

Enzyme-Linked Immunosorbent Assays Using Recombinant Epstein-Barr Virus Antigens For Detection Of Nasopharyngeal Carcinoma In Malaysian Chinese / Lim Chun Shen, Chun Shen Lim

Student Works (2010-2019)

Malaysian Chinese are highly susceptible to Epstein-Barr virus (EBV)-associated nasopharyngeal carcinoma (NPC). Because NPC is often diagnosed at a late stage, accurate EBV serologic tests might be useful to detect NPC in patients with subtle symptoms. And because EBV serological data for Malaysian Chinese are currently lacking, we sought to develop indirect enzyme-linked immunosorbent assays (ELISAs) for a case-control study of NPC in Malaysian Chinese. Of the 165 cases and 658 controls recruited, 89.7% (148/165) prevalent NPC cases were Chinese, in which 14.2% (21/148) Chinese patients were familial NPC cases. The prevalence of family history of NPC among the Chinese …

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The Development Of Single-Chain Variable Fragment (Scfv) Antibodies Against Toxoplasma Gondii By Phage-Display / Sherene Lim Swee Yin, Sherene Swee Yin Lim Jan 2012

The Development Of Single-Chain Variable Fragment (Scfv) Antibodies Against Toxoplasma Gondii By Phage-Display / Sherene Lim Swee Yin, Sherene Swee Yin Lim

Student Works (2010-2019)

The obligate intracellular protozoan parasite, Toxoplasma gondii, is the etiologic agent of an opportunistic infection affecting mainly immunocompromised patients, infants and neonates with immature immune system. There is a need for alternative antiparasitic treatment for toxoplasmosis due to the associated toxicity and teratogenicity of the current drug treatment regime. To investigate a potential alternative strategy, we have used the phage-display system and developed a novel biopanning procedure to isolate single-chain Fv (scFv) antibodies probed against tachyzoites – the rapidly replicating form of T. gondii responsible for acute disease. The resulting scFv antibody library (complexity of 1.62 X 104 independent transformants) …

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Genetic And Phenotypic Characterisation Of Clinical Methicillin-Resistant Staphylococcus Aureus In A Malaysian Hospital / Lim King Ting, King Ting Lim Jan 2012

Genetic And Phenotypic Characterisation Of Clinical Methicillin-Resistant Staphylococcus Aureus In A Malaysian Hospital / Lim King Ting, King Ting Lim

Student Works (2010-2019)

Methicillin-resistant Staphylococcus aureus (MRSA) is one of the main bacterial pathogens responsible for a variety of nosocomial infections ranging from soft-tissue infections to bacteremia. Since most MRSA is often resistant to multiple antibiotics, this has raised a concern over the limited choice of antimicrobial-agents for treatment of life-threatening cases. The objectives of this study were to determine the antimicrobial resistance profiles, presence of resistance and virulence genes, to investigate the molecular epidemiology of MRSA and their evolution over a six-year period. The antibiograms of 188 MRSA strains isolated from UMMC were analyzed by disk-diffusion test and minimum inhibitory concentrations. The …

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Environmental Economic Evaluation Of Landfills In Malaysia / Zhang Chen, Chen Zhang Jan 2012

Environmental Economic Evaluation Of Landfills In Malaysia / Zhang Chen, Chen Zhang

Student Works (2010-2019)

No abstract provided.

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A Preliminary Study On Automated Freshwater Algae Recognition And Classification System / Hayat Mansoor Abdullah, Hayat Mansoor Abdullah Jan 2012

A Preliminary Study On Automated Freshwater Algae Recognition And Classification System / Hayat Mansoor Abdullah, Hayat Mansoor Abdullah

Student Works (2010-2019)

Freshwater algae can be used as indicators to monitor freshwater ecosystem condition because algae react quickly and predictably to a broad range of pollutants. Research reported that Algae can provide early signals of worsening environment. This study was carried out to develop a computer-based image processing technique with artificial neural network (ANN) approaches to automatically detect, recognize, and identify algae genera from the divisions of Bacillariophyta, Chlorophyta and Cyanobacteria in Putrajaya Lake. Based on literature review, automated identification of tropical freshwater algae is even non-existent yet, and this study is designed to fill this gap.The development process of the automated …

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Evaluation Of Risk Caused By Wastewater Discharges From The Petrochemical Special Economic Zone (Petzone) To The Musa Bay (Persian Gulf-Iran) / Ghazaleh Monazami Tehrani, Ghazaleh Monazami Tehrani Jan 2012

Evaluation Of Risk Caused By Wastewater Discharges From The Petrochemical Special Economic Zone (Petzone) To The Musa Bay (Persian Gulf-Iran) / Ghazaleh Monazami Tehrani, Ghazaleh Monazami Tehrani

Student Works (2010-2019)

This study investigated the presence of polycyclic aromatic hydrocarbons (PAHs) and total petroleum hydrocarbon (TPH) in the wastewater effluents of PETZONE and sediments of the Musa Bay (around the PETZONE coastal area) from Jun 2009 to Jun 2010. The primary objectives of this study were to evaluate the sources of pollutants and each pollutant‘s distribution, concentration and contamination degree, as well as to assess the biological response to these stressors based on the ecological risk. The levels of TPH concentration in the study area were found to be relatively moderate (with an average value of 48.98 μg/g) compared to the …

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Development Of Intra- And Interspecies Somatic Cell Nuclear Transfer Protocols Using Ear Fibroblast Cells As Donor Karyoplasts For Production Of Cloned Caprine Embryos / Kwong Phek Jin, Phek Jin Kwong Jan 2012

Development Of Intra- And Interspecies Somatic Cell Nuclear Transfer Protocols Using Ear Fibroblast Cells As Donor Karyoplasts For Production Of Cloned Caprine Embryos / Kwong Phek Jin, Phek Jin Kwong

Student Works (2010-2019)

In Malaysia, the application of various assisted reproductive technologies (ART), particularly reproductive cloning, in goat production system, is still at the infancy stage. Thus, this pioneering study was conducted with the aim to produce cloned caprine embryos through intraspecies somatic cell nuclear transfer (intraspSCNT) and interspecies somatic cell nuclear transfer (interspSCNT) techniques using caprine ear skin fibroblast cell as donor karyoplast as well as developing a protocol for caprine SCNT (intraspSCNT and interspSCNT). The caprine intraspSCNT and interspSCNT (caprine karyoplast-bovine cytoplast) studies were carried out using caprine and bovine oocytes obtained from the abattoir-derived ovaries or via laparoscopic ovum pick-up …

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Isolation And Purification Of Glutathione S-Transferases (Gsts) From Orbicularia Orbiculata / Marini Binti Ibrahim, Marini Ibrahim Jan 2012

Isolation And Purification Of Glutathione S-Transferases (Gsts) From Orbicularia Orbiculata / Marini Binti Ibrahim, Marini Ibrahim

Student Works (2010-2019)

Glutathione S-transferases (GSTs) in bivalves which belong to the phase II detoxification metabolism, have an advantage to be used as biomarkers of aquatic pollution. The preliminary study was to isolate and purify the GSTs from Malaysian bivalve, Orbicularia orbiculata or locally known as Siput Lala. The GST enzyme was purified by using two different matrices of affinity chromatography which were GSTrapTM HP and GSH-agarose (C3). Total proteins attained from both eluates were 0.24±0.003mg and 0.12±0.07mg for GSTrapTM HP column and GSH-agarose (C3) column, respectively. Of the enzyme activity, 18% was retained on the GSTrapTM HP column and gave purification factor …

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Chemical Constituents Of Goniothalamus Tapisoides / Rosalind Kim Pei Theng, Rosalind Pei Theng Kim Jan 2012

Chemical Constituents Of Goniothalamus Tapisoides / Rosalind Kim Pei Theng, Rosalind Pei Theng Kim

Student Works (2010-2019)

Goniothalamus tapisoides Mat Salleh, a plant from Annonaceae family, has been studied. Collected from Sarawak, the bark of this plant were dried and grounded before phytochemical study was performed. The chromatographic separation on the dichloromethane extracts of the bark gave eleven compounds – six known and five new. Six known compounds were identified as goniothalamin 1, pterodondiol 164, liriodenine 114, 9-deoxygoniopypyrone 15, benzamide 161 and cinnamic acid 155. Five new compounds are goniomicin A 157, goniomicin B 158, goniomicin C 159, goniomicin D 160 and tapisoidin 162.

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Epstein-Barr Virus-Encoded Lmp-1, Lmp-2a And Lmp-2b Proteins In Cell Cycle Regulation / Yeo Kok Siong, Kok Siong Yeo Jan 2012

Epstein-Barr Virus-Encoded Lmp-1, Lmp-2a And Lmp-2b Proteins In Cell Cycle Regulation / Yeo Kok Siong, Kok Siong Yeo

Student Works (2010-2019)

Epstein-Barr virus (EBV) is a ubiquitous tumour-causing virus which infects more than 90% of world population asymptomatically. It is closely associated with nasopharyngeal carcinoma (NPC). LMP-1, -2A and -2B are three latent membrane proteins (LMPs) encoded by EBV which are frequently detected in NPC tumour. Recent studies suggest that these three proteins co-operate in the tumorigenesis of NPC but the mechanism is not clear. In this study, LMPs were cloned into pcDNA3.1 and transfected into HEK293T cell line to reveal their oncogenic mechanism via investigation on their involvement in the regulation of cell cycle and genes that are involved. The …

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Systematics And Biogeography Of Shrews (Soricomorpha: Soricidae) In Peninsular Malaysia / Hasmahzaiti Omar, Hasmahzaiti Omar Jan 2012

Systematics And Biogeography Of Shrews (Soricomorpha: Soricidae) In Peninsular Malaysia / Hasmahzaiti Omar, Hasmahzaiti Omar

Student Works (2010-2019)

total of 122 samples were examined in this study were trapped by using pitfall traps, except for Suncus murinus species, which was caught with a rat trap. The 14 skull characters of seven species measured from the past and present studies were subjected to principal component analysis. Although Crocidura negligens was never trapped in this study, earlier studies indicated that this species was distinct from other Crocidura species. Currently, Crocidura monticola are commonly found in Peninsular Malaysia and widely distributed in Sundaland. Previous studies indicated that Crocidura fuliginosa was dominant species in this region. Meanwhile, the smallest shrew Suncus malayanus …

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Tipologi Interaksi Antara Agama Dan Sains: Satu Penilaian Dan Cadangan Menurut Perspektif Islami / Sh. Mohd Saifuddeen Sh. Mohd Salleh, Sh. Mohd Saifuddeen Sh. Mohd Salleh Jan 2012

Tipologi Interaksi Antara Agama Dan Sains: Satu Penilaian Dan Cadangan Menurut Perspektif Islami / Sh. Mohd Saifuddeen Sh. Mohd Salleh, Sh. Mohd Saifuddeen Sh. Mohd Salleh

Student Works (2010-2019)

Kajian ini melihat kepada tipologi interaksi agama dengan sains. Fokus kajian ialah kepada lapan tipologi interaksi antara agama dan sains yang dikemukakan oleh pemikir bidang agama dan sains iaitu Ian Barbour, Immanuel Kant, John Haught, Ted Peters, Margaret Osler, Wentzel van Huyysten, Stephen Jay Gould dan Stephen Snobelen. Tipologi-tipologi ini dianalisis dan dinilai dengan melihat kesesuaiannya kepada pendekatan-pendekatan yang dibawa oleh pemikir-pemikir Islam bagi mencadangkan tipologi terbaik bagi saintis dan ahli agama bekerjasama dan berinteraksi dalam menangani isu-isu yang timbul hasil daripada perkembangan sains dan teknologi. Kajian ini mendapati: (i) Agama mempunyai pengaruh ke atas perkembangan sains sepanjang sejarah manusia …

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Chemical Constituents Of Aglaia Exima / Loong Xe-Min, Xe-Min Loong Jan 2012

Chemical Constituents Of Aglaia Exima / Loong Xe-Min, Xe-Min Loong

Student Works (2010-2019)

A preliminary study on the chemical constituents of Aglaia exima was performed. The leaves of Aglaia exima was extracted in three different solvents: hexane, dichloromethane and methanol. The fractionation of the hexane extract of the leaves of Aglaia exima collected in Terengganu led to the isolation of one new cycloartane triterpenoid; cycloart-24-ene-26-ol-3-one 203 and seven known compounds, which are four cycloartane triterpenoids; 24(E)-cycloart-24-ene-3β,26-diol 199, vaticinone 200, schizandronic acid 201, 24(E)-3β-hydroxycycloart-24-ene-26-al 204, one dammarane triterpenoid; cabraleahydroxylactone 202 and two steroids; β-sitosterol 205 (sterol) and stigmast-5-ene-28-one 207 (sterol). The structures of compounds were analyzed and elucidated by using spectroscopic methods; 1D and …

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Identification Of Bcl-Xl Induced Micrornas Involved In The Apoptotic Properties Of Human Lung Adenocarcinoma Cells, A549 / Norahayu Othman, Norahayu Othman Jan 2012

Identification Of Bcl-Xl Induced Micrornas Involved In The Apoptotic Properties Of Human Lung Adenocarcinoma Cells, A549 / Norahayu Othman, Norahayu Othman

Student Works (2010-2019)

Bcl-xL is an anti-apoptotic protein that is frequently found to be overexpressed in lung adenocarcinoma leading to an inhibition of apoptosis and associated with poor prognosis of this disease. Recently, the roles of microRNAs (miRNAs) in regulating apoptosis and cell survival during tumorigenesis have become evident, with cancer cells showing perturbed expression of various miRNAs. In this project, we utilized miRNA microarrays to determine if miRNA dysregulation in bcl-xL silenced A549 lung adenocarcinoma cells could be involved in apoptotic behavior. Data from qRT-PCR and Western blotting indicated that a siRNA-based transfection induced a decrease of bcl-xL expression in A549 cells …

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Identification And Characterization Of Micrornas Involved In The Invasion And Migration Properties Of Lung, Prostate And Breast Cancer Cells / Yap Seow Hui, Seow Hui Yap Jan 2012

Identification And Characterization Of Micrornas Involved In The Invasion And Migration Properties Of Lung, Prostate And Breast Cancer Cells / Yap Seow Hui, Seow Hui Yap

Student Works (2010-2019)

Primary cancer is often treatable by radiation therapy, chemotherapy or surgery, but tumour invasion and metastasis still remains the most challenging problem to cancer patients, causing death through organ damage or treatment complications. Past researches have focused on these issues, but no major breakthroughs have been achieved to prevent tumour metastasis. Dysregulation in the expression of short non-protein coding microRNAs (miRNAs) found contributes toward the initiation and progression of cancer through their capability to regulate multiple target genes. In this study, four pairs of high and low invasiveness sub-cell lines distinct in invasion and migration properties were established from their …

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Antimicrobial Activity Of Mesophilic And Psychrotropic Microfungi Isolates From: King George Island And Greenwich Island, Maritime Antarctica / Wessam Mansour Filfilan, Mansour Filfilan Wessam Jan 2012

Antimicrobial Activity Of Mesophilic And Psychrotropic Microfungi Isolates From: King George Island And Greenwich Island, Maritime Antarctica / Wessam Mansour Filfilan, Mansour Filfilan Wessam

Student Works (2010-2019)

This research was made to study the antimicrobial activity of fungal isolates from different regions of maritime, Antarctica, namely, King George Island and Greenwich Island (Barrientos Island, Dee Island and Ambato point). A total of 17 isolates composed of 7 mesophilic and 10 psychrotrophic fungi were tested in-vitro against Gram-positive, Gram-negative bacteria and yeast human pathogens. Initial antimicrobial activity screening of Antarctic isolates was made using plug assay method. Five test-microorganisms namely Candida albicans, Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Pseudomonas aeruginosa were used. Only five (out of 17) fungal isolates showed inhibition potency against the test-microorganisms and majority …

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Study On Plastic Recycling In Petaling Jaya / Zhila Hemati, Zhila Hemati Jan 2012

Study On Plastic Recycling In Petaling Jaya / Zhila Hemati, Zhila Hemati

Student Works (2010-2019)

Recycling is an option in waste management that basically helps in the reduction of solid waste generation. While some materials cannot be reused or recycled, plastic is a material that has been more frequently recycled in the last two decades. This study was aimed at characterizing municipal solid waste (MSW) in Petaling Jaya (PJ), Malaysia. It also investigated the degree of residents‘ plastic recycling awareness in relation to identifying the problems affecting plastic recycling. An outlined questionnaire was designed and distributed to residents in the study area. The research includes data collection through field survey; sampling, segregation and wet weight …

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Information And Communication Technology Innovation As A Tool For Promoting Sustainable Agriculture: A Case Study Of Paddy Farming In West Malaysia / Zakirah Othman, Zakirah Othman Jan 2012

Information And Communication Technology Innovation As A Tool For Promoting Sustainable Agriculture: A Case Study Of Paddy Farming In West Malaysia / Zakirah Othman, Zakirah Othman

Student Works (2010-2019)

Sustainable agriculture refers to the farm’s ability to maintain production and giving benefits based on maintaining nature and the ecosystem indefinitely. Malaysia aims to transform current agricultural activities into advanced, innovative and sustainable practices. In the recently announced Third National Agricultural Policy, there are many issues highlighted to promote the sustainability of agricultural practices. However, this is not an easy task because there are basic problems that the farmers will encounter, especially with regards to their understanding of sustainable agriculture. As an alternative solution, introducing Information and Communication Technology (ICT) applications is a novel way to increase awareness and promote …

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Lake Bera And Lake Chini Water Quality Monitoring Using Support Vector Machine / Siti Fatihah Asy Syura Mat Jubit, Siti Fatihah Asy Syura Mat Jubit Jan 2012

Lake Bera And Lake Chini Water Quality Monitoring Using Support Vector Machine / Siti Fatihah Asy Syura Mat Jubit, Siti Fatihah Asy Syura Mat Jubit

Student Works (2010-2019)

Water quality monitoring is very important to control the quality of water. Lake Bera and Lake Chini which are known as a very important wetland are used to apply SVM method to predict its water quality. The output used to predict the classification of high medium and low is the dissolved oxygen according to the standard provided by the Interim National Water Quality Standard of Malaysia and Department of Environment. The training and test data is divided to 80% for training data and 20% for testing data. The SVM is implemented using R software package kernlab which used ksvm as …

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A Survey On Plant Resource In Home Gardens In Peninsular Malaysia / Mohd Raznan Ramli, Mohd Raznan Ramli Jan 2012

A Survey On Plant Resource In Home Gardens In Peninsular Malaysia / Mohd Raznan Ramli, Mohd Raznan Ramli

Student Works (2010-2019)

This study was carried out to describe and characterize uses of plants that are tended or cultivated in home gardens in Peninsular Malaysia. A survey through floristic inspection of home gardens and semi-structured interviews with home garden owners were carried out at 94 home at various villages in Peninsular Malaysia from June through December of 2008. A total of 120 species of plants were encountered of which food plants namely Cocus nucifera L., Nephelium lappaceum L., Musa paradisiacal L., Durio zibethinus Murr and Mangifera indica L were found in most of the home gardens. Most of the species of plants …

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Analysis Of Plastic Debris On Malaysian Beaches / Liyana ‘Izzati Aris, Liyana ‘Izzati Aris Jan 2012

Analysis Of Plastic Debris On Malaysian Beaches / Liyana ‘Izzati Aris, Liyana ‘Izzati Aris

Student Works (2010-2019)

Plastic debris is the main cluster of solid waste component present in the marine environment. Anthropogenic activities namely recreational and fishing activities are believed to contribute to the abundance of plastic debris (1 – 30 mm in size) especially along the beach. This study was undertaken to quantify and assess the degree of plastic debris buried in sand according to size with a view to classify such debris deposition at some Malaysian beaches. Another objective, the abundance distribution of the buried plastics was also studied in relation to the tidal zones of the beaches. Six selected beaches (in three different …

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Ecology And Physiology Of Selected Mangrove Species Under Elevated Sea Level / Mariyam Zarana Rasheed, Mariyam Zarana Rasheed Jan 2012

Ecology And Physiology Of Selected Mangrove Species Under Elevated Sea Level / Mariyam Zarana Rasheed, Mariyam Zarana Rasheed

Student Works (2010-2019)

Climate change components such as sea level rise and increased atmospheric carbon dioxide is likely to affect plant communities at various scales. Mangrove ecosystems are highly threatened by the sea level rise as a result of prolonged waterlogging. Four sets of experiments were set up to study the ecology and physiology of Avicennia alba, Avicennia marina and Bruguiera parviflora under simulated sea level rise. In elevated sea level, A. alba and B. parviflora indicated similar responses with initial height increments, decreased stem diameter and leaf formation; and increased leaf fall. The total biomass and relative growth rates (RGR) also decreased. …

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Spatial And Temporal Distribution Of Phytoplankton At Carey Island Mangrove / Nurul Shahida Redzuan, Nurul Shahida Redzuan Jan 2012

Spatial And Temporal Distribution Of Phytoplankton At Carey Island Mangrove / Nurul Shahida Redzuan, Nurul Shahida Redzuan

Student Works (2010-2019)

Spatial and temporal distributions of phytoplankton were investigated at Carey Island, Banting, Selangor. Sampling was started on April 2009 until March 2010 and was done during high tide and low tide at 3 different stations (ST1, ST2 and ST3). In this study the relations of spatial and temporal composition of phytoplankton with environmental parameters which mainly the physiochemical parameters were determined. A total of 84 species of phytoplankton that comprised of 23 orders, 32 families and 41 genera were identified with aid from light microscopy and SEM. Spatially, though recorded with the lowest cells abundance, the highest H’ and E …

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Synthesis Of Chalcone-Based Six And Seven Membered Heterocyclic Compounds And Their Biological Activities Against H1n1 Virus / Marzieh Yaeghoobi, Marzieh Yaeghoobi Jan 2012

Synthesis Of Chalcone-Based Six And Seven Membered Heterocyclic Compounds And Their Biological Activities Against H1n1 Virus / Marzieh Yaeghoobi, Marzieh Yaeghoobi

Student Works (2010-2019)

This thesis describes the synthesis of a library of chalcones and several flavanones and 1,5-benzothiazepines derived from chalcones and some biological studies of these compounds against neuraminidase (NA). The environmentally benign one-pot method using PMA/SiO2 in ethanol has successfully been applied toward the preparation of flavanone analogues from 2¢- hydroxychalcones, 2¢-aminochalcones and 2¢-mercaptochalcones in reasonable yields. Reactions were screened in a variety of parameters, including solvents, temperatures, reaction time and amount of catalyst used. The nature of the solvent played a key role in the reaction where the reaction performed well in a polar protic solvent such as ethanol and …

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