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2014

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Anticancer Properties And Chemical Investigation Of Seeds And Fruits Of Phaleria Macrocarpa (Scheff.) Boerl / Ma Ma Lay, Ma Lay Ma Jan 2014

Anticancer Properties And Chemical Investigation Of Seeds And Fruits Of Phaleria Macrocarpa (Scheff.) Boerl / Ma Ma Lay, Ma Lay Ma

Student Works (2010-2019)

Traditional herbal medicine has been widely used in the treatment of various diseases. A number of herbal medicines have been shown to have a favourable effect in treating cancer or cancer-related diseases. Phaleria macrocarpa (Scheff.) Boerl is one of the traditional herbal medicines that appear to be useful for treating patients who are hypertensive, diabetic and cancerous. This affect may be associated to its high antioxidant, antimicrobial, anti-inflammatory, and cytotoxic activities as well as other bioactivities present in its chemical constituents. The present study employed a bioassay - guided fractionation and purification of bioactive compounds from the P. macrocarpa plant. …

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The Effect Of Carum Carvi Water Extract Intake As An Alternative Therapy For Weight Loss In Overweight And Obese Women / Mahnaz Kazemipoor, Mahnaz Kazemipoor Jan 2014

The Effect Of Carum Carvi Water Extract Intake As An Alternative Therapy For Weight Loss In Overweight And Obese Women / Mahnaz Kazemipoor, Mahnaz Kazemipoor

Student Works (2010-2019)

Obesity and overweight are considered as challenging health problems worldwide. Despite several modern methods for treatment of obesity such as medical nutrition therapy, low-energy diets, and physical activity. The prevalence of this disease is still high, suggesting the need for alternative therapies. One of the trending approaches is the consumption of traditional medicinal plants. Caraway (Carum carvi L.), has been traditionally used as a spice in Iran. It is also claimed as a potent medicinal plant that is used to treat a variety of ailments including obesity. The objectives of this study are to analyse the phytochemicals present in caraway …

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De Novo Assembly Of An Unknown Geminivirus / Nurul Jannah Binti Mat @ Mohamad, Nurul Jannah Mat @ Mohamad Jan 2014

De Novo Assembly Of An Unknown Geminivirus / Nurul Jannah Binti Mat @ Mohamad, Nurul Jannah Mat @ Mohamad

Student Works (2010-2019)

Next-generation sequencing (NGS) also known as high throughput sequencing is now fast and cheap enough to be considered part of the toolbox for investigating the unknown virus. Illumina Genome Analyzer is one of the developed next-generation sequencing platforms that produce a significant larger volume of sequence data. The short sequence reads generated from Illumina Genome Analyzer can be used to perform de novo assembly. Therefore, this study was conducted to perform de novo assembly of an unknown geminivirus using the sequence reads generated from Illumina Genome Analyzer. In this study, the de novo assembly was carried out using SOAPdenovo and …

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Effects Of Barfi Mrna Knockdown On Cell Growth And Survival In Ebv-Associated Cancer Cells / Taznim Begam Binti Mohd Mohidin, Taznim Begam Mohd Mohidin Jan 2014

Effects Of Barfi Mrna Knockdown On Cell Growth And Survival In Ebv-Associated Cancer Cells / Taznim Begam Binti Mohd Mohidin, Taznim Begam Mohd Mohidin

Student Works (2010-2019)

The Epstein-Barr virus (EBV)-encoded BARF1 (BamHI-A rightward frame-1) is expressed in EBV-positive malignancies such as nasopharyngeal carcinoma, EBV-associated gastric carcinoma, B cell lymphoma and nasal NK/T-cell lymphoma, and has been shown to have important role in oncogenesis. However, the mechanism by which BARF1 elicits its biological effects on EBV-positive malignant cells is unclear. In this study, the effects of BARF1 gene silencing on cell proliferation and apoptosis were investigated in EBV-positive malignant cells. We observed that silencing of BARF1 using RNAi significantly inhibits cell proliferation and induces apoptosis-mediated cell death by collapsing the mitochondrial membrane potential in AG876 and Hone-Akata …

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Data Management In Biodiversity / Kho Soon Jye, Soon Jye Kho Jan 2014

Data Management In Biodiversity / Kho Soon Jye, Soon Jye Kho

Student Works (2010-2019)

Biodiversity describes the variety of life found on Earth and it is a broad area to explore. In this field, a huge amount data has been collected by researchers. Thus, it is essential to manage those information with usage of computerized software, e.g. database. A database that stores biodiversity information is known as biodiversity database. Malaysia is one of 17 mega-diversity countries. Its rich biodiversity has important economic, technological and social implications to the nation. In 16th April 1998, Ministry of Science, Technology and Environment declared Malaysia‟s national policy on biological diversity, to conserve Malaysia‟s biodiversity and to utilize it …

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Molecular Characterization Of Est Microsatellites And Analysis Of Population Genetic Structure In Striped Snakehead Fish, Channa Striata / Sara Takalloo, Sara Takalloo Jan 2014

Molecular Characterization Of Est Microsatellites And Analysis Of Population Genetic Structure In Striped Snakehead Fish, Channa Striata / Sara Takalloo, Sara Takalloo

Student Works (2010-2019)

The Striped snakehead fish, Channa striata is a freshwater air breathing fish species indigenous to Malaysia. It is locally known in Malaysia as Haruan. Channa striata is economically playing a major role in the aquaculture and fisheries industries. Channa striata is important especially as a food source in South East Asia. It has been broadly used for medical and pharmaceutical purposes due to its therapeutic and recuperative qualities. Among the many DNA marker systems available, EST microsatellites have a number of advantages due to its high level of transferability, high reproducibility, codominant inheritance and low cost for development compared to …

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Ultrasound-Assisted Rapid Extraction Of Bacterial Polyhydroxyalkanoates And Its Blend Film Morphology / Khairul Anwar Bin Ishak, Khairul Anwar Ishak Jan 2014

Ultrasound-Assisted Rapid Extraction Of Bacterial Polyhydroxyalkanoates And Its Blend Film Morphology / Khairul Anwar Bin Ishak, Khairul Anwar Ishak

Student Works (2010-2019)

Medium-chain-length polyhydroxyalkanoate (mcl-PHA) is biodegradable polyester that gained serious attention recently, mainly because of its versatility to accomodate a wide range of applications especially in biomedical area. Like other biopolyesters in PHA family, it is synthesized intracellularly by microorganisms under nutrient stress condition i.e abundant carbon sources than other essential nutrients like nitrogen, oxygen, sulphur, etc. It functions as carbon and energy storage to the cells during depletion of carbon sources. A well known group of bacteria able to specifically produce mcl-PHA is fluorescent pseudomonads belonging to rRNA homology group 1. To make industrial production of mcl-PHA viable, significant efforts …

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The Effects Of Stress On Lactation Among Working And Non-Working Malaysian Mothers / Nik Raihan Haji Mohamed, Haji Mohamed Nik Raihan Jan 2014

The Effects Of Stress On Lactation Among Working And Non-Working Malaysian Mothers / Nik Raihan Haji Mohamed, Haji Mohamed Nik Raihan

Student Works (2010-2019)

Lactation impairment is commonly blamed on stress despite mothers’ determination and knowledge on breastfeeding. This research is carried out to determine the association between perceived stress and serum cortisol and prolactin levels in working and non-working mothers during the first, second, third and fourth postpartum months. It is hypothesised that working mothers would be under more stress and thus have higher cortisol level but lower prolactin levels as compared to non-working mothers. Fifty-nine postpartum mothers at two health clinics within the Kuala Lumpur urban area were recruited. However, only nine working and seven non-working participating mothers manage to complete the …

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Bioremediation Of Leachate From Landfills In Selangor Using Ganoderma Australe (Fr.) Pat And Trametes Menziesii (Berk.) Ryvarden / Wan Razarinah Binti Wan Abdul Razak, Wan Razarinah Wan Abdul Razak Jan 2014

Bioremediation Of Leachate From Landfills In Selangor Using Ganoderma Australe (Fr.) Pat And Trametes Menziesii (Berk.) Ryvarden / Wan Razarinah Binti Wan Abdul Razak, Wan Razarinah Wan Abdul Razak

Student Works (2010-2019)

The characterization of leachate from ten different landfills (sanitary and non-sanitary) in Selangor have been studied. The general chemical parameters of leachate showed large differences among the landfills. The concentration of total nitrogen, total suspended solids and ammoniacal nitrogen varied from 8.0 to 1700 mg/L, 10 to 3000 mg/L and 0.94 to 3200 mg/L, respectively. Meanwhile, the concentration of total organic carbon, biological oxygen demand (BOD5) and chemical oxygen demand (COD) were in the range of 0-45070 mg/L, 56-11360 mg/L and 165-16000 mg/L, respectively. Leachate from closed landfill had lower BOD5 and COD content but higher pH and ammoniacal nitrogen …

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The Effect Of Cinnamomum Cassia On Two Breast Cancer Cell Lines / Sima Kianpour Rad, Sima Kianpour Rad Jan 2014

The Effect Of Cinnamomum Cassia On Two Breast Cancer Cell Lines / Sima Kianpour Rad, Sima Kianpour Rad

Student Works (2010-2019)

The bark of the cinnamon tree (Cinnamomum cassia) is a popular culinary spice. It is also used in traditional medicine to maintain health and prevent disease. The antioxidant and anticancer activity of C. cassia was investigated using various assays. C. cassia bark was sequentially extracted with seven solvents of varying polarity. The acetone extract of C. cassia, at 30 μg/ml, protected the mouse fibroblast cell line, 3T3-L1, from DNA damage by 45 %, as estimated by the comet assay. The acetone extract had the highest total phenolic and flavonoid content. The hexane extract of C. cassia and the two main …

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The Use Of Carica Papaya Leaf Juice As A Supplement For Dengue Patients And Its Potential Effect On Immune Modulation / Maisarah Binti Ab Fatah, Maisarah Ab Fatah Jan 2014

The Use Of Carica Papaya Leaf Juice As A Supplement For Dengue Patients And Its Potential Effect On Immune Modulation / Maisarah Binti Ab Fatah, Maisarah Ab Fatah

Student Works (2010-2019)

Dengue is a major vector-borne disease in Malaysia. Among the symptoms presented in patients with dengue infection are headache, fever, rash, pain behind the eyes as well as muscle and joint pains. Currently, there are no suitable vaccines, specific treatment nor anti-virals for the treatment of dengue. As a result, patients are treated according to symptoms. In Malaysia, the juice of Carica papaya leaves (CPL) has been used as a house-hold remedy for dengue infection. However, there is less scientific evidence to prove this. Thus, this study sought to evaluate the use of CPL juice as a supplement for dengue …

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Sexual Dysfunction, Body Image Distress And Marital Dissatisfaction In Breast Cancer Patients Of University Malaya Medical Centre (Ummc) / Norley Shuib, Shuib Norley Jan 2014

Sexual Dysfunction, Body Image Distress And Marital Dissatisfaction In Breast Cancer Patients Of University Malaya Medical Centre (Ummc) / Norley Shuib, Shuib Norley

Student Works (2010-2019)

Sexual dysfunction, body image distress and marital dissatisfaction in breast cancer patients of University Malaya Medical Centre (UMMC) Introduction: Breast cancer is the commonest cancer amongst Malaysian women. Recent literature has shown that, the disease itself and adverse effects of the cancer treatment were associated with sexual dysfunction, body image distress and marital dissatisfaction. Aim: The aim of the study is to determine the prevalence of sexual dysfunction in breast cancer patients who are in remission attending follow-up at the breast clinic in UMMC. Method: This is a cross-sectional study conducted at the breast clinic in UMMC. The patients were …

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Depression And Homesickness Among Iranian Students In University Malaya / Majid Shahmohammadi, Shahmohammadi Majid Jan 2014

Depression And Homesickness Among Iranian Students In University Malaya / Majid Shahmohammadi, Shahmohammadi Majid

Student Works (2010-2019)

Introduction: Studying abroad has become a norm and a “must do” purpose for many scholars. Over the last few years, Malaysia has become a popular destination for students from many Islamic countries including students from Iran. Many of the studies on international students are done among Asian students travelling to western countries. Objective: This is a cross-sectional study aimed to investigate the prevalence of depression and homesickness among the Iranian students in University of Malaya and to see if there are any associated factors including level of religiosity and social support. Methods: 201 Iranian students studying in University Malaya were …

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Tapered Plastic Optical Fiber Sensors For Chemical Detection And Relative Humidity Measurements / Malathy Batumalay, Batumalay Malathy Jan 2014

Tapered Plastic Optical Fiber Sensors For Chemical Detection And Relative Humidity Measurements / Malathy Batumalay, Batumalay Malathy

Student Works (2010-2019)

The developments of novel tapered plastic optical fibers (POFs) devices have become the central focus of researches in recent years especially for sensing applications. In this thesis, simple sensors are proposed and demonstrated using a bare tapered polymethyl methacrylate (PMMA) fiber and tapered PMMA coated sensitive materials for various measurements. The tapered PMMA fibers were fabricated by etching method using acetone, sand paper and de-ionized water to achieve a waist diameter of 0.45 mm and tapering length of 10 mm and operate based on intensity modulation technique. Evanescent field absorption sensors were developed for various electrolyte and nonelectrolyte solutions using …

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Development Of Ultrasound Image Contrast Enhancement And Speckle Noise Reduction For Knee Osteoarthritis Early Detection / Md Belayet Hossain, Hossain Md Belayet Jan 2014

Development Of Ultrasound Image Contrast Enhancement And Speckle Noise Reduction For Knee Osteoarthritis Early Detection / Md Belayet Hossain, Hossain Md Belayet

Student Works (2010-2019)

Knee Osteoarthritis (OA) is one of the most common diseases among the elderly. Typically, medical attention is not sought until the disease has progressed to a point at which it is not possible to diagnose effectively, often due to concerns over the cost of detection at an earlier stage. Ultrasound (US) imaging has a number of advantages as an imaging technique; it is a low cost diagnostic method, non-invasive, non-ionizing and able to provide intuitive visualization. There is a significant change in the shape of cartilage due to the progression of knee OA and its associated cartilage degeneration. By using …

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The Effects Of Bird's Nest As A Cryopotective Agent On Human Adipose Derived Stem Cells / Kinarroy Vaithianathan, Vaithianathan. Kinarroy Jan 2014

The Effects Of Bird's Nest As A Cryopotective Agent On Human Adipose Derived Stem Cells / Kinarroy Vaithianathan, Vaithianathan. Kinarroy

Student Works (2010-2019)

One of the most popular concepts currently is the use of stem cells in the regenerative therapy which replaces the lost or dysfunctional part in a human body. In order for a patient to benefit from such therapies, the stem cell source should be always made available. Therefore, it is important to preserve these cells so that they are always available for treatments. Cryopreservation is one of the important methods to preserve cells and tissues where it can be used for the recovery of damaged tissues and organs. Cryopreservation of stem cells is mainly to minimize any form of damage …

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Neural Response Based Speaker Identification Under Noisy Condition / Leyla Roohisefat, Roohisefat Leyla Jan 2014

Neural Response Based Speaker Identification Under Noisy Condition / Leyla Roohisefat, Roohisefat Leyla

Student Works (2010-2019)

Speaker identification is the mechanism of determining a person among a set of speakers to certify whether that person is who he claims to be. The available speaker identification systems are mostly based on the acoustical signal itself. The problem is that they are very sensitive to noise and can work only at very high signal-to-noise ratio (SNR). However, neural responses are very robust against background noise. In this study, a wellknown model of the auditory periphery by Zilany and colleagues (J. Acous. Soc. Am., 2009) is employed to simulate the neural responses, known as neurogram, on identifying a speaker, …

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Development Of Knee Joint For A Motor-Actuated Knee Prosthesis / Mohd Faiz Mispan, Mispan Mohd Faiz Jan 2014

Development Of Knee Joint For A Motor-Actuated Knee Prosthesis / Mohd Faiz Mispan, Mispan Mohd Faiz

Student Works (2010-2019)

A well-designed lower limb prosthesis is required in order to allow an amputee to return to healthy locomotion. A complete set of the prosthesis for transfemoral amputee includes a socket which is custom fit to the residual limb, a prosthetic knee unit, a shank connecting the knee unit to a prosthetic ankle, and a prosthetic foot. The purpose of this project is to improve the initial design of a microcontroller-based transfemoral prosthesis which was unable to reach the designated rotational speed intended for a functional use, and had low aesthetic value. The improvement focuses on designing a new mechanism on …

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Finite State Machine And Eog Artifacts In Eeg Signals For Wheelchair Navigation / Roziana Ramli, Ramli Roziana Jan 2014

Finite State Machine And Eog Artifacts In Eeg Signals For Wheelchair Navigation / Roziana Ramli, Ramli Roziana

Student Works (2010-2019)

Supporting physically disabled society with severe motor disabilities is very challenging as their needs differ depending on the severity of the impairment incurred. As an attempt to support them, a BCI for wheelchair navigation is developed to help them regain some mobility. In this study, a hybrid BCI that combine inputs from EEG and EOG signals for a more effective interface is proposed. Specifically, one EEG signal at O2 and two EOG artifacts embedded in EEG signals at C3 and C4 are used as inputs to an asynchronous wheelchair navigation system. Cz is taken as reference and the signals are …

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Sudents’ Science Manipulative Skills During Transition From Primary To Secondary School / Hidayah Binti Mohd Fadzil, Hidayah Mohd Fadzil Jan 2014

Sudents’ Science Manipulative Skills During Transition From Primary To Secondary School / Hidayah Binti Mohd Fadzil, Hidayah Mohd Fadzil

Student Works (2010-2019)

Manipulative skills and abilities include skills in the handling and manipulation of materials and apparatus in the context of scientific investigation, as well as the ability to follow instructions and make accurate observation. Students lack exposure to hands-on activities at primary level and this could lead to deficiency in manipulative skills and they will carry this problem to secondary school. Transition to secondary school is a challenging process for students whereby they have to adapt with academic, social and emotional issues to fit into their new environment. Thus the purpose of this study was to explore and investigate the acquisition …

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Methylation Profiling In Oral Squamous Cell Carcinoma / Khor Goot Heah, Goot Heah Khor Jan 2014

Methylation Profiling In Oral Squamous Cell Carcinoma / Khor Goot Heah, Goot Heah Khor

Student Works (2010-2019)

ntroduction: DNA methylation is an epigenetic phenomenon at molecular level that involves gene expression regulation of cell development and differentiation, and diseases. DNA hypermethylation in a gene promoter region shows dramatic effects on gene expression and is a common phenomenon in initiation and progression of many solid tumours that includes Oral Squamous Cell Carcinoma (OSCC). Silencing of hypermethylated genes in promoter regions is a frequent phenomenon in different types of cancer and has achieved increasing diagnostic and therapeutic importance since the changes are reversible. Thus, methylation analysis may provide promising clinical applications that include the development of biomarkers, assessment of …

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Stock Enhancement Of Macrobrachium Rosenbergii (Giant Freshwater Prawns) Inferred By Molecular Genetics And Ecological Studies / Mohd Azwan Bin Jaafar, Mohd Azwan Jaafar Jan 2014

Stock Enhancement Of Macrobrachium Rosenbergii (Giant Freshwater Prawns) Inferred By Molecular Genetics And Ecological Studies / Mohd Azwan Bin Jaafar, Mohd Azwan Jaafar

Student Works (2010-2019)

The freshwater prawn Macrobrachium rosenbergii or locally known as “Udang galah” in Malaysia is ranked as the sixth largest aquaculture species in Asia based on volume. Overharvesting of this species has caused it depletion in all the river line systems in the whole world including Malaysia. A stock enhancement program has been done by the Malaysian Department of Fisheries to fulfil the demand for this prawn. The objective of this study was to determine the productivity success of stock enhancement using 18 microsatellite (Type I and Type II) and mitochondrial DNA markers (mtDNA). In order to evaluate the productivity success, …

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Synthesis, Characterization And Biological Properties Of Palm Catanionic Surfactants / Wong Siew Pui, Siew Pui Wong Jan 2014

Synthesis, Characterization And Biological Properties Of Palm Catanionic Surfactants / Wong Siew Pui, Siew Pui Wong

Student Works (2010-2019)

Surfactant is well known for its versatility in many forms of applications. Today, new types of surfactants continue to emerge and evolve to cater to the changing needs of industries. One of these interesting and promising new surfactants is catanionic surfactant. Its unique aggregation behaviour and superior surface activities have sparked interests to many researchers in the area of colloidal chemistry. In our study, CmMES.CnTAB catanionic surfactants were formed by mixing equimolar ratio of cationic surfactant alkyltrimethylammonium bromide (CnTAB) and anionic surfactant sodium methyl ester α-sulfonate (CmMES). Precipitation method coupled with cold filtration system was employed to obtain the white …

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Exploring The Diversity Of Butterflies (Lepidoptera) At Different Elevations In Genting Highlands And The Validity Of Graphium Species In Peninsular Malaysia / Karen Chia Huey Min, Karen Huey Min Chia Jan 2014

Exploring The Diversity Of Butterflies (Lepidoptera) At Different Elevations In Genting Highlands And The Validity Of Graphium Species In Peninsular Malaysia / Karen Chia Huey Min, Karen Huey Min Chia

Student Works (2010-2019)

Butterflies play an ecological role as pollinators, prey, defoliators and herbivores. They are in abundant and diverse in many ecosystems. However, they are serves as indicators of ecosystem change and predict environmental alternation. This study was conducted to (1) compare the attractiveness of ten types of fruit bait and make recommendations on the most efficient fruit bait types for trapping butterflies in the South East Asian tropical forest; (2) investigate how butterfly diversity is related to elevation at Genting Highlands in Peninsular Malaysia; and (3) explore the phylogenetic relationships within Graphium and the validity of Pathysa. The bait trap is …

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Ecology Of Hermit Crabs (Family Diogenidae) In Matang Mangrove Estuary And Adjacent Coastal Waters / Teoh Hong Wooi, Hong Wooi Teoh Jan 2014

Ecology Of Hermit Crabs (Family Diogenidae) In Matang Mangrove Estuary And Adjacent Coastal Waters / Teoh Hong Wooi, Hong Wooi Teoh

Student Works (2010-2019)

Ecological aspects of diogenid hermit crabs were studied in Matang mangrove estuary and adjacent coastal waters to determine their abundance and distribution in relation to abiotic and biotic factors, population dynamics, shell use patterns, reproduction and trophodynamics. Samplings of hermit crabs and environmental parameters were carried out at mid-estuary, river mouth, coastal mudflat and offshore shoal waters, using a small otter trawl from August 2009 to March 2011. The major hermit crab species were D. lopochir Morgan, 1989, Diogenes moosai Rahayu & Forest, 1995, and Clibanarius infraspinatus Hilgendorf, 1869 which dominated the shoal area, mudflat and mid-estuary, respectively. The growth …

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Application Of Newly Synthesized Titanium (Iv) Butoxide-Cyanopropyltriethoxysilane Sorbent For The Extraction Of Aromatic Amines In Water Samples / Mazidatulakmam Binti Miskam, Mazidatulakmam Miskam Jan 2014

Application Of Newly Synthesized Titanium (Iv) Butoxide-Cyanopropyltriethoxysilane Sorbent For The Extraction Of Aromatic Amines In Water Samples / Mazidatulakmam Binti Miskam, Mazidatulakmam Miskam

Student Works (2010-2019)

A new titanium (IV) butoxide-cyanopropyltriethoxysilane (Ti-CNPrTEOS) hybrid material was successfully synthesized as sorbent for the extraction of polar aromatic amines. The sorbent was synthesized by hydrolysis and condensation of titanium (IV) butoxide and cyanopropyltriethoxysilane with the presence of hydrochloric acid as catalyst via sol-gel method. Under the optimum synthesis conditions (tetrahydrofuran as solvent, 1.2 M of hydrochloric acid catalyst, 4 mol of water content with ratio of titanium (IV) butoxide and cyanopropylteriethoxysilane of 1:1 and aging temperature of 60°C), the sorbents were characterized by Fourier Transform-Infrared, Field-Emission Scanning Electron Microscopy-Energy, CHN elemental analysis, Brunauer–Emmett–Teller (BET) desorption and thermogravimetric analysis. A …

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Determination Of Lead In Wax Crayon Using Flame Atomic Absorption Spectrometry / Suhailey Binti Mohd Noor, Suhailey Mohd Noor Jan 2014

Determination Of Lead In Wax Crayon Using Flame Atomic Absorption Spectrometry / Suhailey Binti Mohd Noor, Suhailey Mohd Noor

Student Works (2010-2019)

The method for the determination of lead in wax crayon by Flame Atomic Absorption Spectrometry was adopted from Health Canada Safety Program (HCSP), Product Safety Laboratory, ‘Determination of Total Lead in Wax Crayon by Closed Vessel Micowave Digestion’ and verified. The parameter of method verification such as accuracy, precision, limit of detection, limit of quantitation and linearity were studied. Three colours from 10 boxes of wax crayon samples were analysed. Microwave digestion method was used to extract the lead prior to analysis. The concentration of lead in red, blue and orange colour wax crayon was 25.23 ± 3.26 mg kg-1, …

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Isolation And Characterization Of Yersinia Enterocoliticafrom Food And Swine / Tan Lai Kuan, Lai Kuan Tan Jan 2014

Isolation And Characterization Of Yersinia Enterocoliticafrom Food And Swine / Tan Lai Kuan, Lai Kuan Tan

Student Works (2010-2019)

Yersinia enterocolitica is an important foodborne enteric pathogen that causes gastroenteritis. There are limited studies on Y. enterocolitica in Malaysia, hence the potential complication due to yersiniosis in the country remains unknown. The objectives of this study were: (i) to determine the prevalence of Y. enterocolitica from raw food and pigs in Malaysia; (ii) to characterize the Malaysian Y. enterocolitica by using phenotypic and genotypic methods and; (iii) to study the genetic relatedness of Malaysian Y. enterocolitica strains from different food sources and pigs in Malaysia; and (iv) to improve the isolation of rate of Y. enterocolitica by modifying the …

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Optimization Of Selected Fermentation Parameters For Microbial Biohydrogen Production Using Food Waste As The Major Substrate / Nurul Azwa Binti Mohd Yunus, Mohd Yunus Nurul Azwa Jan 2014

Optimization Of Selected Fermentation Parameters For Microbial Biohydrogen Production Using Food Waste As The Major Substrate / Nurul Azwa Binti Mohd Yunus, Mohd Yunus Nurul Azwa

Student Works (2010-2019)

The energy crisis and current environmental degradation are the two vital issues for global sustainable development. Hydrogen is seen as the energy of the future; looking at the fluctuating price of oil and other natural gases prices, on top of the increasing global awareness of increasing carbon dioxide level. This carbon dioxide level is associated to global warming, acid rain and other disastrous phenomenon. Hydrogen is a sustainable energy source with minimal use of hydrocarbon. These, plus the high energy yield of 122 kJ/g makes hydrogen an attractive alternative to fossil fuels (Guo et al, 2010) The objective of this …

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Cloning And Biochemical Characterization Of Cg16936, A Putative Glutathione Transferase In Drosophila Melanogaster / Tanusya Murali, Tanusya Murali Jan 2014

Cloning And Biochemical Characterization Of Cg16936, A Putative Glutathione Transferase In Drosophila Melanogaster / Tanusya Murali, Tanusya Murali

Student Works (2010-2019)

CG16936, which was classified as DmGSTE12 was studied in this project. This study cloned and expressed CG16936 and the resulting recombinant CG16936 has been reactive towards 1,2-dichloro-4-nitrobenze (DCNB) (0.4324 μmol/min/mg) but of no activities towards, 1-chloro-2,4-nitrobenzene, trans-2-hexenal, p-nitrobenzyl chloride (NBC), ethacryanic acid (EA), trans-4-phenyl-butene-2-one (PBO), hexa-2,4-dienal, trans,trans-hepta-2,4-dienal, 1,2-epoxy-3-p-nitrophenoxy propane (EPNP), bromosulfophthalein (BSP) and trans-oct-2-enal. In previous work, it was shown that CG16936 was expressed in response to odorant treatment to fruit flies. Our work investigated the direct contribution of the recombinant CG16936 towards conjugation of odorants Glutathione (GSH). No evidence of conjugated product yielded when the recombinant protein acted upon …

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