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2011

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Association Of Dna Repair Gene Polymorphism (Xrcc1) And Oral Cancer Risk / Mohadeseh Hasanpourghadi, Mohadeseh Hasanpourghadi Jan 2011

Association Of Dna Repair Gene Polymorphism (Xrcc1) And Oral Cancer Risk / Mohadeseh Hasanpourghadi, Mohadeseh Hasanpourghadi

Student Works (2010-2019)

The main aim of the present study was to determine the distribution of XRCC1 Arg399Gln genotypes in oral cancer and non-oral cancer patients. This study was also to investigate the association between XRCC1 Arg399Gln genotypes and oral cancer risk and to compare the distribution of XRCC1 Arg399Gln genotypes among different ethnic groups in Malaysia. This case-control study involved a total of 209 cases of oral squamous cell carcinoma (OSCC) patients and 212 controls with neither any trace of cancers nor any family history of cancer. Mean age of the OSCC patients for cases was 61.34 ± 14.01 years, while for …

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Development Of Functionally Graded Composite For Fabrication Of Dental Post / Ahmed Abdullah Ali Madfa, Ahmed Abdullah Ali Madfa Jan 2011

Development Of Functionally Graded Composite For Fabrication Of Dental Post / Ahmed Abdullah Ali Madfa, Ahmed Abdullah Ali Madfa

Student Works (2010-2019)

Introduction: Ideally, dental posts should have varying stiffness along its length, where the coronal end require higher stiffness for better retention and rigidity of the core, and this stiffness should reduced towards the apical end. The purpose of this study is to develop a novel dental post that would meet this requirement. Objectives: This multi-staged study aimed to fabricating, characterizing and optimizing three novel formulation of functionally graded multilayered composites (FGMC) for possible applications as dental post. Three functionally graded dental posts (FGSPs) derived from optimised FGMC were later evaluated for thermo-mechanical stress and stress distribution when used as dental …

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Dna Ploidy In Oral Squamous Cell Carcinoma Among Malaysians / Haki Ismail Ibrahim., Ibrahim Haki Ismail Jan 2011

Dna Ploidy In Oral Squamous Cell Carcinoma Among Malaysians / Haki Ismail Ibrahim., Ibrahim Haki Ismail

Student Works (2010-2019)

Objective: To determine the prevalence of the state of DNA ploidy in OSCC; to compare the state of DNA ploidy between the tumour and its margin; to investigate the association between DNA ploidy status of surgical margins and type of surgical margins; and to investigate the association between the state of DNA ploidy of OSCC and sociodemographic and clinicopathological parameters. Material and method: Specimens (n=78) consisting of paraffin-embedded tissue of OSCC were selected from University of Malaya Oral Pathology Diagnostic Laboratory archives between 2002 to 2009 and peripheral blood monocytes (PBMC) was used as an external control. The cell/nuclear suspensions …

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Development Of A 600 Joules Small Plasma Focus As Pulsed Radiation Source / Lee Seng Huat, Seng Huat Lee Jan 2011

Development Of A 600 Joules Small Plasma Focus As Pulsed Radiation Source / Lee Seng Huat, Seng Huat Lee

Student Works (2010-2019)

The work starts at developing a 600 joules small plasma focus based on previous experience and works on the 3 kJ plasma focus system [Lee et al. (1988), Favre et al. (1992), Moo et al. (1995), Yap et. al. (2005)]. The objectives of this project are two folds, first, to scale down the energy of the plasma focus device from kJ to few hundred joules; and second to develop the new system as a pulsed radiation source. The development and construction of the small Mather type plasma focus system employed a novel design with electrodes of 60 mm in length …

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Association Between Tnf-A-308 G/A Polymorphism And Oral Cancer Risk Among Malaysian Indian And Indigenous / Mojtaba Golpich, Mojtaba Golpich Jan 2011

Association Between Tnf-A-308 G/A Polymorphism And Oral Cancer Risk Among Malaysian Indian And Indigenous / Mojtaba Golpich, Mojtaba Golpich

Student Works (2010-2019)

The primary role of tumor necrosis factor alpha (TNF-α) gene is to regulate immune cells. Dysregulation and, in particular, overproduction of this gene has been found to increase susceptibility to a variety of human diseases such as cancer. The aim of this study is to investigate the association of single nucleotide polymorphism (SNP) in TNF-α −308 promoter and the risk of oral cancer among the Malaysian Indian and Indigenous population.The study included 143 confirmed oral squamous cell carcinoma (OSCC) (mean age = 63.69 ± 12.84) and 79 healthy controls (mean age = 50.43 ± 16.35). The polymerase chain reaction-restriction fragment …

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Isolation And Purification Of Glutathione Transferases From Donax Sp. / Norfarhan Mohd Assa'ad, Mohd Assa'ad Norfarhan Jan 2011

Isolation And Purification Of Glutathione Transferases From Donax Sp. / Norfarhan Mohd Assa'ad, Mohd Assa'ad Norfarhan

Student Works (2010-2019)

Glutathione S-transferases (GSTs) are among the enzymes involved in the phase II detoxification metabolism of wide range exogenous and endogenous compounds in living cells. Bivalves GSTs often proposed as biomarker for marine pollution detection for several reasons; filter feeder, sessile, wide range distribution, and not affected by some biotic factors. In this study, GSTs from remis Donax sp. was purified by using two affinity column; GSTrapTMHP and GSH-agarose (C3). The total recovery of CDNB-active GSTs was 12% and 3% for GSTrapTMHP and GSH-agarose (C3), respectively. SDS-PAGE of GSTrapTMHP purified extract revealed two subunits with apparent molecular masses (MW) of 29 …

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Coral Ecology Of A Unique Continental Island Of Pulau Perak, Kedah, Malaysia / Affendi Yang Amri, Yang Amri Affendi Jan 2011

Coral Ecology Of A Unique Continental Island Of Pulau Perak, Kedah, Malaysia / Affendi Yang Amri, Yang Amri Affendi

Student Works (2010-2019)

Coral reef research in Peninsular Malaysia has mainly been concentrated on the east coast with little emphasis on the Straits of Malacca (SOM) in the west coast. The coral reefs in SOM are extremely important, more so than their east coast counterparts due to the fact that they are only a few viable coral reef ecosystems in SOM. In the northern part of SOM stands Pulau Perak, an island which has underwater vertical reef walls. Pulau Perak reef walls are unique compared to other continental islands in Peninsular Malaysia which have typical fringing reefs. In addition the scientific knowledge of …

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Screening And Partial Purification Of Protease Inhibitors From Senna Surattensis Leaves / Ahmad Firdhaus Arham., Arham Ahmad Firdhaus Jan 2011

Screening And Partial Purification Of Protease Inhibitors From Senna Surattensis Leaves / Ahmad Firdhaus Arham., Arham Ahmad Firdhaus

Student Works (2010-2019)

This study was done to determine the inhibitory activity that were exhibited by different parts of the local plants in Malaysia selected from the 4 families which are Leguminosae, Rubiaceae, Apocynaceae and Euphorbiaceae. The screening method used in this study are Bradford Assay and Trypsin Inhibitory Assay. Both these assays revealed that Senna surattensis leaves showed the highest inhibitory activity of 83 % compared to other 41 plant samples studied in this study. SDS-PAGE and Tricine SDS on this sample extract showed the presence of this protease inhibitor through the formation of band. From these band also, the molecular weight …

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Analysis Of Transgenic Wild Rice : Molecular Confirmation Of Transgene Presence And Risk Assessment For Pollen Viability / Alireza Saeidi., Alireza Saeidi Jan 2011

Analysis Of Transgenic Wild Rice : Molecular Confirmation Of Transgene Presence And Risk Assessment For Pollen Viability / Alireza Saeidi., Alireza Saeidi

Student Works (2010-2019)

Rice is one of the major sources of food for the population of the world, and almost 50% of the world population depends on it. Malaysian national rice production was estimated to provide just 60-65% of the domestic requirement, so the strategies that can help to increase rice yield are necessary for the agricultural sector of Malaysia. Towards this, one useful research approach is to reduce or knock down expression of a rice gene using RNA interference (RNAi) with the goal of obtaining a phenotype that is suggestive of its function. This project is a based on the analysis of …

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Biological Activities Of Alpinia Pahangensis And Alpinia Mutica Extracts / Fadhlina Binti Mahfot, Mahfot Fadhlina Jan 2011

Biological Activities Of Alpinia Pahangensis And Alpinia Mutica Extracts / Fadhlina Binti Mahfot, Mahfot Fadhlina

Student Works (2010-2019)

The aim of the present study is to investigate the biological activities of two selected wild Alpinia species namely, Alpinia pahangensis Ridl. and Alpinia mutica Roxb. Extraction of the rhizomes and leaves was done successively using three solvents with different polarity: hexane, dichloromethane and methanol. The crude extracts were tested for their antimicrobial and antioxidant activities. The antioxidant activity was determined using the DPPH free radical scavenging method. The antimicrobial activity was investigated based on disc-diffusion assay and minimum inhibition concentration (MIC) against 12 microorganisms consisting of six gram positive bacteria: Bacillus cerues, Bacillus subtilis, Staphylococcus aureus, Streptococus mutans, Streptococcus …

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Comparative Studies Of Bioethanol Fuel Production And Engine Emission From Different Rotten Fruits Biomasses / Hadeel Mustafa Al-Yamani, Hadeel Mustafa Al-Yamani Jan 2011

Comparative Studies Of Bioethanol Fuel Production And Engine Emission From Different Rotten Fruits Biomasses / Hadeel Mustafa Al-Yamani, Hadeel Mustafa Al-Yamani

Student Works (2010-2019)

The unsustainable energy resources like fossil fuel are going to be depleted in the next few decades and the trends in biofuel production from biomass are gaining popularity to encounter the expected energy crisis in the world. Ethanol is the most widely used liquid biofuel and is produced as a result of fermentation process from sugars, starches or cellulosie biomass including fruit wastes. In this study rotten rambutan, mango, banana and pineapple fruits were utilized for bioethanol production. Rotten fruits were used to produce bioethanol by fermentation using yeast (Saccromyces cerevisiae ). Different parameters including pH, TSS, glucose concentration, retention …

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Terf2 Gene Expression In Childhood Acute Lymphoblastic Leukaemia / Lelamekala Vengidasan, Lelamekala Vengidasan Jan 2011

Terf2 Gene Expression In Childhood Acute Lymphoblastic Leukaemia / Lelamekala Vengidasan, Lelamekala Vengidasan

Student Works (2010-2019)

Advances in the understanding of cell biology in childhood acute lymphoblastic leukemia (cALL) have led to sophisticated risk-stratification based therapeutic interventions targeting individual patients. Despite these advances, approximately 10-20% of children with ALL still relapse. Thus, identification of new prognostic indicators will allow for better targeted treatment. TERF2, one of the main components of the shelterin complex (telosome), has been found to be over-expressed in a variety of epithelial malignancies, including lung, skin and breast cancer. This study aims to investigate the level of expression of TERF2 in pediatric ALL and in different cALL patient subgroups and its potential as …

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Genetic Variation And Differentiation Between Cultured And Wild Populations Of Channa Striata (Haruan) From Microsatellite Markers / Jothi Annavadivoo A/P Balasingam., Jothi Annavadivoo Balasingam Jan 2011

Genetic Variation And Differentiation Between Cultured And Wild Populations Of Channa Striata (Haruan) From Microsatellite Markers / Jothi Annavadivoo A/P Balasingam., Jothi Annavadivoo Balasingam

Student Works (2010-2019)

The snakehead fish (Channa striata) is a freshwater fish species indigenous to Malaysia. Channa striata (C. striata), lo cally known as Haruan is valued as a natural remedy in traditional medicine as well as a reputable source of protein. The rapid progress of scientific validation research on the therapeutic properties of the species has spurred the equally rapid expansion of commercialised products that capitalises on these unique yet beneficial qualities of C. striata. Dependence on the wild in order to meet the increasing demand on the species is no longer a feasible option whereby, deteriorating natural abundance due to anthropogenic …

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Seagrass Mapping And Distribution In Relation To Water Quality Using Gis In Sungai Johor, Peninsular Malaysia / Noor Aini Ahmad, Noor Aini Ahmad Jan 2011

Seagrass Mapping And Distribution In Relation To Water Quality Using Gis In Sungai Johor, Peninsular Malaysia / Noor Aini Ahmad, Noor Aini Ahmad

Student Works (2010-2019)

Seagrass meadows are noted for their extremely high productivity and contribution of valuable ecosystem functions and services to coastal zone. Seagrasses which are vulnerable to the changes of water and environmental quality are increasingly threatened by human activities resulting in a deterioration of water quality. An environmental study on seagrass was conducted at Sungai Johor, Peninsular Malaysia. The purpose of this study was to examine the relationship between species diversity and distribution of seagrasses and various environmental (water quality) factors. Three (3) seagrass species were found along Sungai Johor which identified as Halophila ovalis, Halophila spinulosa and Enhalus acoroides. Halophila …

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Tissue Selection And Optimization Of Dna Extraction For The Construction Of Genomic Library Of White Dragon Fruit (Hylocereus Undatus) / Loo Zhang Xin, Zhang Xin Loo Jan 2011

Tissue Selection And Optimization Of Dna Extraction For The Construction Of Genomic Library Of White Dragon Fruit (Hylocereus Undatus) / Loo Zhang Xin, Zhang Xin Loo

Student Works (2010-2019)

Genomic library of Hylocereus undatus was successfully constructed using Lambda Bacteriophage FIX II vector kit (Stratagene) which resulted in titer of 4 x 104 pfu/ml. One week old leaflets from seed germination were used for DNA extraction. This method ensures sustainable supply of material for DNA extraction and the yield of the DNA was 975 μg/g of leaf material. The white colour pellet indicates that it was free from contaminants which were supported by a spectrophotometer reading (A260 nm/A280 nm ratio of 1.92) and agarose gel electrophoresis showing intact genomic DNA. The genomic DNA was digested with BamHI to produce …

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Exploring The Efficacy Of Integrated Pest Management Technology And Innovation Diffusion In Malaysia : A Case Study Approach / Frances Mary Penafort, Frances Mary Penafort Jan 2011

Exploring The Efficacy Of Integrated Pest Management Technology And Innovation Diffusion In Malaysia : A Case Study Approach / Frances Mary Penafort, Frances Mary Penafort

Student Works (2010-2019)

In spite of advancements in integrated pest management technology and innovation in the 1990’s, there was a growing interest in the international scene that rice farmers’ pest management decision making had changed little over the years. This alarming discovery was made in comparison to the 1970’s era, where agrochemical organisations played a vital role in the development of integrated pest management practices and farmers were encouraged to use pesticides as necessary inputs. Today most rice farmers strongly relied on these pesticides as they perceived that pesticides were necessary for high production, contrary to the advancements made in pest management. The …

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Antioxidant And Cytotoxic Investigations Of Beta Vulgaris L / Jaime Stella A/P Moses Richardson, Jaime Stella Moses Richardson Jan 2011

Antioxidant And Cytotoxic Investigations Of Beta Vulgaris L / Jaime Stella A/P Moses Richardson, Jaime Stella Moses Richardson

Student Works (2010-2019)

Beta vulgaris has been commonly consumed and traditionally used for various medicinal purposes. The present study scientifically evaluates the antioxidant and cytotoxic potential of the plant using various bioassays. The root part of Beta vulgaris was collected and extracted using methanol and then fractionated with hexane, ethyl acetate and water. The fresh root of Beta vulgaris was juiced and then subjected to evaporation under reduced pressure to form an extract. Chemical investigations were then directed to the ethyl acetate fraction and juice extract; fraction ET1, ET2 and ET3 were obtained from ethyl acetate fraction by isolation using high performance liquid …

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Proteomic Characterization Of Eurycoma Longifolia And Its Application In Validating Tongkat Ali Herbal Products / Venoos Iman, Venoos Iman Jan 2011

Proteomic Characterization Of Eurycoma Longifolia And Its Application In Validating Tongkat Ali Herbal Products / Venoos Iman, Venoos Iman

Student Works (2010-2019)

Eurycoma longifolia commonly known as “Tongkat Ali” in Malaysia is claimed to have aphrodisiac properties and has been widely used in Malay traditional medicine. An aphrodisiac is defined as a substance that increases sexual activity and libido and/or improves sexual performance. These claims have led to a vast number of “Tongkat Ali” products being marketed without proper authentication. There was therefore a need to characterize the proteins in these commercial Tongkat Ali herbal products using biomarkers to establish the authenticity of the claims. The important chemical components in Eurycoma longifolia are eurycomanol, eurycomanone and eurycomalactone. However they are not linked …

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Discovery Of Immune Responsive Proteins In Ihhnv-Infected And Non-Infected Macrobrachium Rosenbergii / Tahereh Alinejad, Tahereh Alinejad Jan 2011

Discovery Of Immune Responsive Proteins In Ihhnv-Infected And Non-Infected Macrobrachium Rosenbergii / Tahereh Alinejad, Tahereh Alinejad

Student Works (2010-2019)

The major problem in the prawn industry worldwide is acute epizootic diseases that are closely associated with explosive death among prawns which leads to economic losses in commercial aquaculture and posing threats to the indigenous wild stocks. Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV) was listed by OIE (Office of International Epizootics of World Organization for Animal Health) to be shown to have international significance in aquaculture. The study was conducted to understand the molecular responses of crustacean hemocytes to IHHNV infection. 2D-proteomic approach was used to investigate the differential expression proteins in hemocytes of infected and non-infected M.rosenbergi .Viral …

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A Distribution Arising From A Random Walk On The Plane / Sim Shin Zhu, Shin Zhu Sim Jan 2011

A Distribution Arising From A Random Walk On The Plane / Sim Shin Zhu, Shin Zhu Sim

Student Works (2010-2019)

This thesis proposed a new distribution to model under-, equi- and overdispersion in count data. It arises as a particular case of a modified random walk on the plane, and includes the binomial, negative binomial and shifted negative binomial as special cases. Some properties, test of hypothesis for equi-dispersion, simulation study of power, parameter estimation by maximum likelihood and a squared distance method based on the probability generating function are considered. The proposed distribution is compared with existing distributions like the COM-Poisson and generalized Poisson for modelling dispersion. It is shown to be a flexible model in applications by illustrating …

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Mathematical Model On The Cellulase Enzymes Production As A Function Of Viscosity / Fahimeh Abdeyazdan, Fahimeh Abdeyazdan Jan 2011

Mathematical Model On The Cellulase Enzymes Production As A Function Of Viscosity / Fahimeh Abdeyazdan, Fahimeh Abdeyazdan

Student Works (2010-2019)

As cellulosic material is the most abundant and renewable source of organic matter, ethanol can be produced cheaply from cellulosic waste. The cellulose must be hydrolyzed to glucose before it can be fermented to ethanol. The enzymatic hydrolysis of cellulose using cellulase enzymes is considered an environmental- friendly and less energy intensive alternative. White-rot fungi belong to the wood-destroying basidiomycetes and are well known as the only micro-organisms responsible for the enzyme hydrolysis of all major wood polymers, including lignin, cellulose and hemicelluloses. On the other hand, the production cost of cellulase enzymes is a limitation in ethanol fermentation. Therefore, …

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Production Of Caprine And Bovine In Vitro-Fertilised As Well As Parthenogenetic Embryos And An Attempt To Vitrify In Vivo- And In Vitro-Derived Embryos / Tan Wei Lun, Wei Lun Tan Jan 2011

Production Of Caprine And Bovine In Vitro-Fertilised As Well As Parthenogenetic Embryos And An Attempt To Vitrify In Vivo- And In Vitro-Derived Embryos / Tan Wei Lun, Wei Lun Tan

Student Works (2010-2019)

The main objective of this research was to determine the effects of oocyte grading and insemination duration on cleavage rate of embryos obtained from in vitro fertilisation (IVF) in bovine and caprine species. In addition, the effects of oocyte grading in bovine and caprine on production of parthenogenetic embryos as well as an attempt to cryopreserve embryos using vitrification technique were also evaluated. Bovine oocytes were obtained from abattoir while caprine oocytes were retrieved through laparoscopic oocyte pick-up (LOPU) or abattoir source. For laparoscopic oocyte pick-up goats, gonadotrophin injections were involved prior to surgery, which were Estrumate (125 μg), Pregnant …

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Preparation Of Β-Cyclodextrin Based Adsorbents And Their Behaviour Towards Chromium(Vi)-Diphenylcarbazide Complex Removal From Aqueous Solution / Nurul Huda Mohd Yusof, Nurul Huda Mohd Yusof Jan 2011

Preparation Of Β-Cyclodextrin Based Adsorbents And Their Behaviour Towards Chromium(Vi)-Diphenylcarbazide Complex Removal From Aqueous Solution / Nurul Huda Mohd Yusof, Nurul Huda Mohd Yusof

Student Works (2010-2019)

The adsorption of Cr(VI) ions from aqueous solution by β-cyclodextrin (β-CD) based polymer as an adsorbent was studied in a batch adsorptions experiments. Three types of adsorbent were synthesized, namely, β-CDCP-HMDI, β-CDCP-TDI and Si-TDI-βCD. The method was based on the complex reaction of Cr(VI) with 1,5-diphenylcarbazide (DPC) in acidic solution loaded on β-CDCP-HMDI and β-CDCP-TDI and Si-TDI-βCD. The adsorption isotherm and kinetics of the three adsorbent were studied. Equilibrium isotherm was analyzed according to classic Langmuir and Freundlich model. It shows that the Langmuir isotherm is better in describing the adsorption process for adsorbent β-CDCP-HMDI, while Freundlich isotherm is better …

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Biologically Active Alkaloids From Alstonia Angustiloba / Ku Wai Foong, Wai Foong Ku Jan 2011

Biologically Active Alkaloids From Alstonia Angustiloba / Ku Wai Foong, Wai Foong Ku

Student Works (2010-2019)

The alkaloidal content of Malaysian plant, Alstonia angustiloba Miq., was investigated and the results are summarized as below (Table). A total of 20 alkaloids were isolated and characterized, of which, three were new alkaloids, viz., angustilobine C (1), andransinine (2), and angustiphylline (3). Angustilobine C (1) and andransinine (2) are alkaloids of the angustilobine- and andranginine type, respectively, while angustiphylline (3) is a new bisindole alkaloid constituted from the union of uleine and secovallesamine moieties. Alkaloids 1 and 2 were obtained from the leaf extract while the bisindole 3 was isolated from the bark extract. In addition to the new …

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Study On The Supramolecular Interaction Of Inclision Complex Of Β - Cyclodextrin With Dithizone And Dithizone-Zinc And Its Analytical Application / Siti Nurur Raihan Mohd Kamal, Mohd Kamal Siti Nurur Raihan Jan 2011

Study On The Supramolecular Interaction Of Inclision Complex Of Β - Cyclodextrin With Dithizone And Dithizone-Zinc And Its Analytical Application / Siti Nurur Raihan Mohd Kamal, Mohd Kamal Siti Nurur Raihan

Student Works (2010-2019)

The non-covalent interaction of beta-cyclodextrin (β-CD), dithizone (H2Dz) and dithizone-zinc (H2Dz-Zn) complex was studied in detail. Solid samples were studied using solid state 13C Cross Polarization and Magic Angle Spinning spectroscopy (13C CP/MAS NMR), Fourier Transform Infrared spectroscopy (FTIR), Thermal Gravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Powder X-Ray Diffraction (XRD) and Energy Dispersive X-ray (EDX) to investigate the formation of the inclusion complex. Spectrophotometric technique was also used to assess the formation of inclusion complex in liquid form. The characterization results supported the formation of inclusion complex. The results showed that β-CD formed a complex with H2Dz in a …

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Conversion Of Spent Mushroom Sawdust Substrate To Simple Sugars For Bioethanol Production / Soo Ching Siew, Ching Siew Soo Jan 2011

Conversion Of Spent Mushroom Sawdust Substrate To Simple Sugars For Bioethanol Production / Soo Ching Siew, Ching Siew Soo

Student Works (2010-2019)

Spent Mushroom Sawdust Substrate (SMSS) was appraised for its potential as a lignocellulosic waste source for conversion of to bioethanol. Aqueous perchloric acid is used to hydrolyze the lignocellulosic waste feedstock to simple sugars which are then fermented to ethanol. Aqueous perchloric acid was chosen as the medium for conversion of SMSS to sugars as it can hydrolyze the recalcitrant cellulosic biomass to give a significant amount of glucose without the need for strong heating or the application of pressure. The products of the breakdown of SMSS by perchloric acid were analysed by HPLC, glucometer and by Fehling’s method. HPLC …

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Antioxidant Effects Of Rhodomyrtus Tomentosa (Kemunting) Extract On The Development Of Experimental Atherosclerotic-Induced New Zealand White Rabbit / Muhamad Fahrin Maskam, Muhamad Fahrin Maskam Jan 2011

Antioxidant Effects Of Rhodomyrtus Tomentosa (Kemunting) Extract On The Development Of Experimental Atherosclerotic-Induced New Zealand White Rabbit / Muhamad Fahrin Maskam, Muhamad Fahrin Maskam

Student Works (2010-2019)

The in vitro study was conducted to determine the antioxidant activity of R. tomentosa in water, methanol, chloroform and petroleum ether extract. In DPPH assay, methanol extract had the highest antioxidant capacity with IC50 of 107μg/ml. Antioxidant activity of R. tomentosa measured using FRAP assay also showed that methanol extract had the highest antioxidant capacity 0.162nm at concentration of 500μg/ml. While in Metal Chelating assay again showed methanol extract had the most chelating ability of all extracts with 36% at concentration of 100μg/ml. The chemical compounds found in R. tomentosa were quercetin, gallic acid and tannic acid from HPLC analyses; …

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Analyzing Arabic-English Interlanguage Coda Consonant Clusters : Optimality Theoretic Approach / Ala'a Mohammed Amin A Turkustani, Ala'a Mohammed Amin A Turkustani Jan 2011

Analyzing Arabic-English Interlanguage Coda Consonant Clusters : Optimality Theoretic Approach / Ala'a Mohammed Amin A Turkustani, Ala'a Mohammed Amin A Turkustani

Student Works (2010-2019)

The study investigates the problematic English coda consonant clusters which Arabic speakers have in pronouncing English. This investigation involves a constraint-based analysis of interlanguage syllable structure within the optimality framework to see how the native language (NL) interferes in L2 pronunciation. The study presents an analysis of interlanguage (IL) syllable structure and answers a question in how NL interfere in Arabic speakers articulation of ESL syllable structure. It also investigates the effective role of the markedness of the forms in contributing to such difficulty in pronunciation. In other words, how these two factors affect Arabic speakers` pronunciation of English coda …

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Antioxidant Activity In Selected Local Vegetables / Sumathi A/P Murti, Sumathi Murti Jan 2011

Antioxidant Activity In Selected Local Vegetables / Sumathi A/P Murti, Sumathi Murti

Student Works (2010-2019)

A free radical is any atom or molecule that has a single unpaired electron in an outer shell and its damage is closely associated with oxidative damage. Oxidative damage by free radicals in the human body plays an important causative role in disease initiation and progression. Antioxidants provide a measure of protection that slows the process of oxidative damage. In this study, crude petroleum benzene, chloroform, methanol and water extracts of Allium tuberosum (garlic chives), Apium graveolens (L.) (celery), Ipomoea batatas (L.) (sweet potato leaves), Murraya koenigii (L.) (curry leaves), Psophocarpus tetragonolobus (winged bean), and Sauropus androgynus (sweet leaves) were …

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Effect Of Plant Growth Regulators On Fruit Growth And Quality Development Of Syzygiumsamarangense (Water Apple/Wax Apple) / Adel Mohammed H Al-Saif, Adel Mohammed H Al-Saif Jan 2011

Effect Of Plant Growth Regulators On Fruit Growth And Quality Development Of Syzygiumsamarangense (Water Apple/Wax Apple) / Adel Mohammed H Al-Saif, Adel Mohammed H Al-Saif

Student Works (2010-2019)

The present study was conducted to investigate the effects of Gibberellic Acid (GA3), Naphthalene Acetic Acid (NAA) and N-2-chloro-4-pyridyl-N-phenylurea (CPPU) on the growth and quality development of water apple/ wax apple (Syzygium samarangense). GA3 at the concentrations of 0 (water control) 30, 60 and 90 ppm was used in experiment 1. NAA at the concentrations of 0 (water control), 6, 12 and 18 ppm was used in experiment 2. CPPU at the concentrations of 0 (water control) 10, 15 and 20 ppm was used in experiment 3. The swabbing technique of hormone application was used for all plant growth regulator …

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