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2012

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Inclusion Of Lycium Barbarum, Psidium Guajava, Momordica Grosvenori And Garcinia Mangostana In Yogurt And Their Effects On Fermentation And Exopolysaccharide-Production / Elham Bagheri, Elham Bagheri Jan 2012

Inclusion Of Lycium Barbarum, Psidium Guajava, Momordica Grosvenori And Garcinia Mangostana In Yogurt And Their Effects On Fermentation And Exopolysaccharide-Production / Elham Bagheri, Elham Bagheri

Student Works (2010-2019)

Yogurt is popularly consumed because of its high digestibility, refreshing organoleptic properties and the healthy bacteria it contains. Milk incubated with starter culture (SC) at 41⁰C in the presence of plants (Momordica grosvenori, Psidium guajava, Lycium barbarum or Garcinia mangostana) water extract were studied to examine the effects on acidification, microbial growth, gelation and exopolysaccharide (EPS) content. Initial pH values (5.8-6.2) of the mixture of milk, plant water extract and SC were not different (p>0.05) from control (6.20; mixture of milk and SC). The rates of pH reduction for all herbal-yogurts (-0.40 pH unit/ hour), except G. mangostana and …

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Screening Of Chitinolytic Activities Of Geomyces Spp. Isolated From Fildes Peninsula, King George Island, Antarctica / Fawzyah Obeedallah Albaldi, Fawzyah Obeedallah Albaldi Jan 2012

Screening Of Chitinolytic Activities Of Geomyces Spp. Isolated From Fildes Peninsula, King George Island, Antarctica / Fawzyah Obeedallah Albaldi, Fawzyah Obeedallah Albaldi

Student Works (2010-2019)

The first part in this research, was screened six strains of Geomyces spp. isolated from King George Island in the Maritime Antarctica for chitinase enzyme. Initially, microfungi were grown at 4 °C and 25 °C on a series of plates each containing 1% colloid chitin, 0.5% (NH4)2SO4, 0.05% MgSO4.7H2O, 0.24% KH2PO4, 0.06% K2HPO4.3H2O and 1.5% agar. Colony radius and hydrolytic activity were measured and a relative activity index (RA) constructed. Relative activity values at 25 ˚C were higher than at 4 ˚C. Only Geomyces sp. 5 (AKA7KGI102 R1-4) showed significant chitinase activity at both temperatures. Obviously, effective hydrolysis occurred at …

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A Preliminary Study On The Use Of Alternative Chemicals For Treatment Of Wastewater In Coal Fired Power Generation / Gunasegran A/L Ramasamy, Gunasegran Ramasamy Jan 2012

A Preliminary Study On The Use Of Alternative Chemicals For Treatment Of Wastewater In Coal Fired Power Generation / Gunasegran A/L Ramasamy, Gunasegran Ramasamy

Student Works (2010-2019)

Hydrated lime is used for pH adjustment as part of the treatment process at the main wastewater treatment plant in Sultan Azlan Shah Power Station, Manjung. Many problems are encountered in usage of hydrated lime mainly in terms of handling. Manual labour is used to load hydrated lime into bag unloader and it is a messy job because some of the chemical spills and gets air borne. This is also a safety concern. The hydrated lime also frequently chokes the outlet of storage silo and is another manual job to clear the blockage. This study is important because replacement of …

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Evaluation Of Chemoprotective Effects Of Phyllanthus Niruri Against Azoxymethane-Induced Foci Of Aberrant Crypts In Rats / Halabi Mohammed Farouq O., Mohammed Farouq O Halabi Jan 2012

Evaluation Of Chemoprotective Effects Of Phyllanthus Niruri Against Azoxymethane-Induced Foci Of Aberrant Crypts In Rats / Halabi Mohammed Farouq O., Mohammed Farouq O Halabi

Student Works (2010-2019)

Phyllanthus niruri (P. niruri) is an important Malaysian medicinal plant commonly used traditionally for the treatment of many aliments. The present investigation was designed to elucidate the chemoprotective effects of ethanolic extract of this plant against azoxymethane-induced (AOM) foci of aberrant crypts in rats. Sprague Dawley rats received injections of AOM (15mg/kg, once weekly) for two weeks. Daily treatments with P. niruri extracted, 250mg/kg and 500 mg/kg of body weight as low and high dose, respectively, were orally administered for eight weeks. At the end of the study, aberrant crypt foci (ACF) were evaluated and examined under a light. The …

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Peculiar Feed-Forward Loop Network Motifs In Escherichia Coli / Kok Eng Piew, Eng Piew Kok Jan 2012

Peculiar Feed-Forward Loop Network Motifs In Escherichia Coli / Kok Eng Piew, Eng Piew Kok

Student Works (2010-2019)

A feed-forward loop (FFL) is one type of transcription network motifs studied in systems biology. So far, eight types of FFL based on their regulatory patterns have been identified. The majority of FFL found in transcription networks of biological systems have been identified to belong to coherent and incoherent type 1 FFL. Nevertheless, six FFL types (coherent and incoherent type 2, 3 and 4 FFL) are present in low frequencies in Escherichia coli. The persistence and not elimination of these “peculiar” FFL through natural selection is perplexing. One way to understanding this conundrum is to study the dynamics of these …

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Solid Waste Debris Management On Selected Beaches In Malaysia / Khairunnisa Ahmad Kamil, Khairunnisa Ahmad Kamil Jan 2012

Solid Waste Debris Management On Selected Beaches In Malaysia / Khairunnisa Ahmad Kamil, Khairunnisa Ahmad Kamil

Student Works (2010-2019)

Solid waste debris on beaches had caused environmental, aesthetical, economic and social problems in Malaysian beaches. This study discussed solid waste debris management on selected Malaysian beaches namely, Teluk Kemang, Pasir Panjang, Batu Burok, Seberang Takir, Tanjung Aru and Teluk Likas. The objectives of the study are to determine the abundance, composition, rate of accumulation, and the sources of debris on these beaches. It also aims to investigate the current beach management in Malaysia and beach users’ opinion and attitude towards marine pollution issues. Debris from a total area of 60 m along each beach were collected, separated, counted, and …

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Detection Of Selected Resistance Genes, Integrons, Salmonella Genomic Island And Plasmids In Multidrug Resistant Salmonella / Lee Kong Hoe Lee, Kong Hoe., Kong Hoe Lee Jan 2012

Detection Of Selected Resistance Genes, Integrons, Salmonella Genomic Island And Plasmids In Multidrug Resistant Salmonella / Lee Kong Hoe Lee, Kong Hoe., Kong Hoe Lee

Student Works (2010-2019)

The study was to detect and characterize the selected antimicrobial resistance genes, class 1 integron, Salmonella Genomic Island 1 (SGI1) and plasmid profile of 41 selected multidrug resistant (MDR) Salmonella strains of human origin. Salmonella strains harbored blaCTX-M (33.3%) followed by blaTEM (25.0%), blaPSE-1 (13.9%), blaCMY-2 (8.3%) and blaSHV (2.8%) genes. Quinolone or fluoroquinolone-resistant strains harbored qnrB (75.0%) and qnrS (29.2%) genes. Concurrent presence of β-lactamase genes and qnr genes were detected in 9 strains, including S. Lagos (n=1), S. Enteritidis (n=2), S. Farsta (n=2) and S. Typhimurium (n=4). Class 1 integron was detected in 9 strains (S. Albany (n=2), …

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Bioethanol Production From Date Fruit Waste And Its Usage In Petrol Engine / Mazen Abdullatif Alzain, Mazen Abdullatif Alzain Jan 2012

Bioethanol Production From Date Fruit Waste And Its Usage In Petrol Engine / Mazen Abdullatif Alzain, Mazen Abdullatif Alzain

Student Works (2010-2019)

Biofuel is biodegradable, nontoxic and suitable substitute for fossil fuels, and capable to reduce greenhouse gas like CO2, CO, HC and NOX emissions. The study investigated the use of waste date from date palm tree (Phoenix dactylifera) as a source of bio-ethanol production that could be used as a fuel. The bioethanol was produced by fermentation process using the waste dates as a substrates for yeast and enzymes such as cellulase and amylase. The effects of different fermentation parameters such as yeast concentration, pH, temperatures, fermentation periods, water content and substrate components on bioethanol production were investigated. From the results, …

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Analysis Of Plastic Debris On Malaysia Beaches / Liyana 'Izzati Aris, Aris Liyana 'Izzati Jan 2012

Analysis Of Plastic Debris On Malaysia Beaches / Liyana 'Izzati Aris, Aris Liyana 'Izzati

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

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

Student Works (2010-2019)

This research looks at the typologies of the interaction between religion and science. The focus of this research is on eight typologies of interaction between religion and science as proposed by thinkers in this field, namely Ian Barbour, Immanuel Kant, John Haught, Ted Peters, Margaret Osler, Wentzel van Huyysten, Stephen Jay Gould and Stephen Snobelen. These typologies are analysed and evaluated by looking at their suitability vis-à-vis the approaches suggested by Islamic thinkers in order to suggest the best typology for scientists and religious scholars to co-operate and interact in tackling the issues brought about by developments in science and …

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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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Application Of Hybrid Evolutionary Algorithm (Hea) To Discover The Best Rule Set To Explain Dissolved Oxygen (D.O.) Dynamics In 2 Freshwater Lakes / Awanis Azizan, Azizan Awanis Jan 2012

Application Of Hybrid Evolutionary Algorithm (Hea) To Discover The Best Rule Set To Explain Dissolved Oxygen (D.O.) Dynamics In 2 Freshwater Lakes / Awanis Azizan, Azizan Awanis

Student Works (2010-2019)

This project was initiated to study the ability of Hybrid Evolutionary Algorithms (HEA) in predicting the best rule sets to explain the dynamics of dissolved oxygen pattern in 2 freshwater lakes, Tasik Bera (Bera Lake) and Putrajaya Lake. In this study, we would like to observe the correlation between dissolved oxygen and other water quality parameters of the respected lakes that have been generated by the training of the algorithm. After each data training, analysis on rule sets generated was done and comparison was made against a set of testing data. Relations between each parameter were individually examined on how …

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The Efficacy Of Alignment-Based And Alignment-Free Methods In Reconstructing Phylogenetic Trees Using Complete Mitochondrial Dna Sequence / Elham Yousef Kalafi, Elham Yousef Kalafi Jan 2012

The Efficacy Of Alignment-Based And Alignment-Free Methods In Reconstructing Phylogenetic Trees Using Complete Mitochondrial Dna Sequence / Elham Yousef Kalafi, Elham Yousef Kalafi

Student Works (2010-2019)

Similarity searching tools are generally divided to two distinct groups: Alignment-based and alignment-free methods. There is no standard comparison between alignment-based and alignment-free methods` performance. In this project, I compared CLUSTALW, T-COFFEE and MUSCLE algorithms with four alignment-free methods, Kr, D2, D2z and MplusD to find out which of these methods are more efficient with respect to time and accuracy. In both alignment-based and alignment-free, results are represented by phylogenetic trees. Here, all phylogenetic trees are compared against the reference tree to determine how accurate the methods are. I found that alignment-based methods were the most accurate comparing to alignment-free …

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16s Rrna Pcr-Dgge Based Bacterial Community Structure In Activated Sludge Systems / Ang Pey Pey, Pey Pey Ang Jan 2012

16s Rrna Pcr-Dgge Based Bacterial Community Structure In Activated Sludge Systems / Ang Pey Pey, Pey Pey Ang

Student Works (2010-2019)

We studied bacterial community structure in three different sewage treatment plants (STPs), namely STP 1, 2 and 3, in Klang Valley. STP 1, 2 and 3 were located in residential, commercial and light-industrial areas, respectively. Cu and Pb pollution detected in STP 3 was shown to affect its sludge production and biomass. Investigation by 16S rRNA PCR-DGGE demonstrated that bacterial community structures in the three STPs were different; and heavy metal resistant bacteria were predominant at STP 3. In order to determine the effects of heavy metal pollution on bacterial community structures, we used the canonical correspondence analysis, and showed …

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Induced Mutation Of In Vitro Aquatic Plant, Cryptocoryne Xwillisii Reitz By Using Gamma Irradiation And Irap Analyses To Distinguish The Sports (Clonal Mutation) / Norhanizan Sahidin, Sahidin Norhanizan Jan 2012

Induced Mutation Of In Vitro Aquatic Plant, Cryptocoryne Xwillisii Reitz By Using Gamma Irradiation And Irap Analyses To Distinguish The Sports (Clonal Mutation) / Norhanizan Sahidin, Sahidin Norhanizan

Student Works (2010-2019)

One part of ornamental fish industry is the aquatic plants. Ornamental fish industry is identifying as one of National Key Economic Area (NKEA) for Malaysia, under business opportunity. Cryptocoryne xwillisii Engler ex Baum is one of the highly demanded aquatic plants in international market. Unfortunately, the plants take months to grow, seldom flowering and no viable seeds. The studies were done to mass-produce the plants by tissue culture and to develop new variety by mutation. Tissue culture of water trumpet, Cryptocoryne xwillisii Engler ex Baum, was developed using Murashige and Skoog 1962 (MS) medium, which contained two different plant growth …

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Ecological Studies And Analysis Of Glucomannan Content In Selected Amorphophallus Spp. Of Peninsular Malaysia / Dahlia Shahbuddin, Dahlia Shahbuddin Jan 2012

Ecological Studies And Analysis Of Glucomannan Content In Selected Amorphophallus Spp. Of Peninsular Malaysia / Dahlia Shahbuddin, Dahlia Shahbuddin

Student Works (2010-2019)

A study was conducted to investigate the ecological parameters and glucomannan content of selected Amorphophallus spp. in Peninsular Malaysia. A survey and documentation of Amorphophallus spp. were carried out throughout Peninsular Malaysia and the ecological parameters were measured and quantified. The life cycle of A. paeoniifolius was studied over a period of one year and two locations, namely Jerantut, Pahang and Kuala Kangsar, Perak were selected for quadrat analysis of A. paeoniifolius and A. prainii. Samples of four Amorphophallus spp. were collected for determination of glucomannan content following the method by Megazyme International Ireland Limited (2004) and Wang et. al. …

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The Application Of Metaheuristics In Network Routing And Inventory Routing Problem / Huda Zuhrah Ab Halim, Ab Halim Huda Zuhrah Jan 2012

The Application Of Metaheuristics In Network Routing And Inventory Routing Problem / Huda Zuhrah Ab Halim, Ab Halim Huda Zuhrah

Student Works (2010-2019)

Metaheuristic methods are widely known as one of the most practical approaches in solving large (or very large) problems in many fields, specifically NP hard Combinatorial Problems. In this thesis, we study two powerful metaheuristics method that are Genetic Algorithm (GA) and Variable Neighborhood Search (VNS). In this thesis, we analyzed both metaheuristics methods, GA and VNS by applying to two NP-hard combinatorial problems, Point to Multipoint Routing Problem (PMRP) and Integrated Inventory Routing Problem (IRP). Message Scheduling Problems (MSP) is one of the important fields in the design of an efficient telecommunication network. Specifically PMRP is to find optimal …

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Homology Modeling Analysis Of Gstd3 From Drosophila Melanogaster / Kauthar Mohd Daud, Mohd Daud Kauthar Jan 2012

Homology Modeling Analysis Of Gstd3 From Drosophila Melanogaster / Kauthar Mohd Daud, Mohd Daud Kauthar

Student Works (2010-2019)

Glutathione S-transferase is a detoxifying enzyme that responsible in catalyzing the conjugation of electrophilic xenobiotics compound with the thiol group of glutathione by biotransforming it into hydrophilic compound that can be eliminated from the cells via ion channel transport system. In Drosophila melanogaster, its GSTs have been divided into many classes in which two of them are organism specific, delta and epsilon. Members of delta GSTs which consist of 10 members are located at 3R chromosome. However, in delta isoform 3, there is truncation of several amino acids including conserved tyrosine residue at positions 5 and 6. Since D3 has …

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Development And Applications Of Intensity Modulation Based Fiber Optic Displacement Sensors / Yang Hangzhou, Hangzhou Yang Jan 2012

Development And Applications Of Intensity Modulation Based Fiber Optic Displacement Sensors / Yang Hangzhou, Hangzhou Yang

Student Works (2010-2019)

This thesis presents various designs and applications of fiber optic displacement sensors (FODSs) which are based on intensity modulation technique in conjunction with multimode plastic optical fiber. Various FODS designs have been proposed using different sensor probes and reflective targets. In the design of sensor probes, the linear range of FODS with two receiving fibers bundles parallel is increase almost double comparison with that of conventional FODS. In the concentric format of sensor probe, from the results of experimental a higher number of receiving fiber surrounded the higher sensitivity of FODS is achieved and a theoretical model of 16 receiving …

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Ranging Patterns And Group Kinship Composition Of Wild Malaysian Slow Loris (Nycticebus Coucang Coucang) Using Radio Telemetry And Mitochondrial Dna Analysis / Jaime Castillo Garcia, Jaime Castillo Garcia Jan 2012

Ranging Patterns And Group Kinship Composition Of Wild Malaysian Slow Loris (Nycticebus Coucang Coucang) Using Radio Telemetry And Mitochondrial Dna Analysis / Jaime Castillo Garcia, Jaime Castillo Garcia

Student Works (2010-2019)

No abstract provided.

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Studies On Antioxidant And Cytotoxic Activities Of Dichloromethane Extract Of Marasmius Species / Teesilia Mohamed Nor, Teesilia Mohamed Nor Jan 2012

Studies On Antioxidant And Cytotoxic Activities Of Dichloromethane Extract Of Marasmius Species / Teesilia Mohamed Nor, Teesilia Mohamed Nor

Student Works (2010-2019)

Although much research has been focused on the therapeutic and medicinal effects of wild mushrooms, there is still paucity of information on the pharmacological properties of Marasmius species. The present study was undertaken to evaluate the cytotoxic and antioxidant activities of M. guyanensis (KUM 20044, KUM 20222, and KUM 20117), M. kanchingnensis (KUM 20160), Marasmius sp. (KUM 20067), M. ruforotula (KUM 20111, KUM 20112) and M. selangorensis (KUM 20181). Crude dichloromethane extracts were prepared from the mycelial biomass grown in liquid Glucose-Yeast-Malt- Peptone (GYMP) using a soxhlet extractor system. The cytotoxic effect of the Marasmius extracts was screened using Neutral …

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Waste Audit At Coconut-Based Industry And Vermicomposting Of Different Types Of Coconut Waste / Twana Abdulrazaq Tahir, Twana Abdulrazaq Tahir Jan 2012

Waste Audit At Coconut-Based Industry And Vermicomposting Of Different Types Of Coconut Waste / Twana Abdulrazaq Tahir, Twana Abdulrazaq Tahir

Student Works (2010-2019)

No abstract provided.

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Carbogen Treatment For Ph-Stat Management In Cardiopulmonary Bypass / Vijay Sundra Kumuran, Vijay Sundra Kumuran Jan 2012

Carbogen Treatment For Ph-Stat Management In Cardiopulmonary Bypass / Vijay Sundra Kumuran, Vijay Sundra Kumuran

Student Works (2010-2019)

Hypocarbia commonly occurs in infants undergoing cardiopulmonary bypass causing respiratory alkalosis with pH-stat management. In this study, pCO2 regulation was adjusted accordingly to sweep gas in control and treatment groups with gas-to-blood flow ratio of 0.5:1. Each extracorporeal membrane oxygenator (Capiox® RX05 and Medtronic® Minimax Plus® Hollow Fiber Oxygenator) contained control and treatment groups to determine carbogen intervention is necessary for infants undergoing hypothermic bypass. Arterial blood gas was corrected according to actual temperature of the patients for both control (without carbogen) and treatment (with carbogen) groups. The carbogen treatment was introduced to overcome the problem of maintaining pH and …

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Layer-By-Layer Plasma Enhanced Chemical Vapour Deposition Of Nanocrystalline Silicon Thin Films / Goh Boon Tong, Boon Tong Goh Jan 2012

Layer-By-Layer Plasma Enhanced Chemical Vapour Deposition Of Nanocrystalline Silicon Thin Films / Goh Boon Tong, Boon Tong Goh

Student Works (2010-2019)

This work is focused on the study of hydrogenated silicon (Si:H) thin films and nanostructures grown by layer-by-layer (LBL) deposition technique using a home-built radio-frequency (rf) plasma enhanced chemical vapour deposition (PECVD) system. The initial phase of this work involved preparation and characterization of hydrogenated silicon (Si:H) thin films by continuous (CD) and LBL deposition techniques on crystal silicon (c-Si) and glass substrates at different rf powers, substrate temperatures and hydrogen to silane flow-rate ratios. The effects of the deposition conditions on the optical and structural properties of the films are studied by optical transmission spectroscopy, Fourier transform infrared (FTIR) …

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Sedimentation Rate In Bera Lake And Soil Redistribution At Its Catchment Using Radioisotopes / Mohammadreza Gharibreza, Mohammadreza Gharibreza Jan 2012

Sedimentation Rate In Bera Lake And Soil Redistribution At Its Catchment Using Radioisotopes / Mohammadreza Gharibreza, Mohammadreza Gharibreza

Student Works (2010-2019)

The Bera Lake is a lacustrine system and the largest natural lake in Malaysia. Assessment of literature review has highlighted a clear gap in the evaluation of environmental impacts of anthropogenic activities on the soil and water resources and sedimentary regime. Accordingly, determination of soil and nutrient redistribution in the catchment area, and sedimentation rates, nutrients fate and sediment quality assessment at Bera Lake using fallout 210Pb and 137Cs radioisotopes and sediment quality guidelines have been defined as aims of the present research. A comprehensive methodology was formulated to perform an effective literature review, innovation of core sampler, field surveying, …

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Identification And Characterizationof Micro-Rna In Macrobrachium Rosenbergii / Tan Tian Tian, Tian Tian Tan Jan 2012

Identification And Characterizationof Micro-Rna In Macrobrachium Rosenbergii / Tan Tian Tian, Tian Tian Tan

Student Works (2010-2019)

MicroRNAs are ~20-22nt non protein-coding RNA regulatory genes that posttranscriptionally regulate many protein–coding genes to influence critical biological and metabolic processes. While the number of known microRNA is increasing, there is no published data for microRNA in freshwater prawns (Macrobrachium rosenbergii) a commercially cultured and economically important food species. Through deep parallel sequencing and an in silico data analysis approach, 327 miRNA families have been identified from small RNA libraries with reference to both the de novo transcriptome of M.rosenbergii obtained from RNA-Seq and to miRBase (Release 18.0, November 2011). Based on the identified mature miRNA and recovered precursor sequences …

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Micropropagation, Antioxidant And Antimicrobial Activities Of Asparagus Officinalis Cv. Mary Washington In Vivo And In Vitro / Arash Khorasani Esmaeili, Arash Khorasani Esmaeili Jan 2012

Micropropagation, Antioxidant And Antimicrobial Activities Of Asparagus Officinalis Cv. Mary Washington In Vivo And In Vitro / Arash Khorasani Esmaeili, Arash Khorasani Esmaeili

Student Works (2010-2019)

In recent years there has been renewed interest in natural medicines that are obtained from plant parts or plant extracts. Asparagus officinalis is a herbaceous perennial plant that belongs to Liliaceae family, a valued vegetable for its medicinal properties. The present study was carried out in order to establish an efficient in vitro propagation protocol for Asparagus officinalis. For this purpose, the nodal explants of Asparagus officinalis Cv. Mary Washington were cultured on MS medium containing 3% sucrose and different concentrations of NAA and BAP or IBA and Kn, mixed or separately with range of 0-1.5 mg/l for BAP/Kn and …

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Method Development And Analysis Of Cypermethrin And Λ-Cyhalothrin In Palm Oil Matrices And Soil Samples By Gas Chromatography / Badrul Hisyam Zainuddin, Zainuddin Badrul Hisyam Jan 2012

Method Development And Analysis Of Cypermethrin And Λ-Cyhalothrin In Palm Oil Matrices And Soil Samples By Gas Chromatography / Badrul Hisyam Zainuddin, Zainuddin Badrul Hisyam

Student Works (2010-2019)

determination of cypermethrin and λ-cyhalothrin residues in crude palm oil (CPO), crude palm kernel oil (CPKO), and soil samples using gas chromatography with electron capture detector (GC-ECD). The first half of the thesis studied the development and optimization of pesticides extraction from palm oil samples. Sample preparations were divided into two parts. The first part was the extraction step based on low-temperature extraction technique. Factors such as acetonitrile volume, decanting the liquid phase from the precipitated oil after low-temperature precipitation, and the freezing time were studied and optimized. In the second part, two different clean-up methodologies were tested for co-extractives …

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Formation Of Silicon Nanowires By Chemical Vapour Deposition Technique Using Indium Catalyst / Chong Su Kong, Su Kong Chong Jan 2012

Formation Of Silicon Nanowires By Chemical Vapour Deposition Technique Using Indium Catalyst / Chong Su Kong, Su Kong Chong

Student Works (2010-2019)

Formations of silicon nanowires using aurum and indium catalyst by plasma-enhanced chemical vapour deposition and hot-wire chemical vapour deposition techniques were studied in this work. The depositions were carried out by using a home-built dual-mode plasma-assisted hot-wire chemical vapour deposition system. A tungsten filament with purity of 99.95% was employed for evaporation of aurum or indium wire to form catalyst on a substrate. Silane gas, which was diluted in hydrogen carrier gas was used as a precursor for the growth of the silicon nanowires. Plasma was generated through a power electrode by a radio frequency generator (13.56 MHz), and hot-wire …

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Postharvest Physiological And Biochemical Characteristics Of Syzygium Samarangense Fruits / Maryam Tehrani, Maryam Tehrani Jan 2012

Postharvest Physiological And Biochemical Characteristics Of Syzygium Samarangense Fruits / Maryam Tehrani, Maryam Tehrani

Student Works (2010-2019)

Little data is available in the scientific literature on postharvest changes taking place in three varieties of Syzygium samarangense fruits, an increasingly popular fruit in the Asian region. In this study, the postharvest physico-chemical and mechanical properties of three varieties of Syzygium samarangense (red, pink and deep red) namely, fruit color, weight loss, pulp firmness, total soluble solids, pH, titratable acidity, total sugar, total starch and total protein were determined during the postharvest storage period under ambient conditions of Syzygium samarangense fruits. It was observed that weight loss, total soluble solids (TSS), pH, total sugar and total protein of the …

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