Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2012

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 19591 - 19620 of 22917

Full-Text Articles in Entire DC Network

Eeg Signal Analysis Before And After Performing Salat On Gamma Band / Farid Shiman, Shiman Farid Jan 2012

Eeg Signal Analysis Before And After Performing Salat On Gamma Band / Farid Shiman, Shiman Farid

Student Works (2010-2019)

Religious meditations and prayers were seen as the conditions necessary for promoting relaxation, healthy living, and acting as alternative medical therapies for balancing human mind and body. In this study, the investigation of all the neuropsychophysiological effects of pre- and post-baseline of an Islamic prayer (Salat) on the electroencephalogram (EEG) was carried out. The EEG data in this study were recorded for ten healthy males for pre- and post-baseline in the performance of the Salat. In order to analyze the data from the EEG signals of this study, AcqKnowledge 4.0 software (BIOPAC Systems Inc, Goleta, CA) and Matlab were used …

Go to article

Improvement Of Dielectrophoretic Data Analysis Algorithm In Determining The Relative Polarisability Of Dielectric Particles / Robiyanti Adollah, Adollah Robiyanti Jan 2012

Improvement Of Dielectrophoretic Data Analysis Algorithm In Determining The Relative Polarisability Of Dielectric Particles / Robiyanti Adollah, Adollah Robiyanti

Student Works (2010-2019)

In the past few years, there has been an extensive research in the manipulation and analysis of biological cells at the micro scale. DEP offer the ability to manipulate particles, especially living cells, is fundamental to many biological and medical applications, including isolation and detection of cancer cells, concentration of cells from dilute suspensions, separation of cells according to specific properties, and trapping and positioning of individual cells for characterization. The term DEP was first introduced by Pohl in 1951 to describe the transnational motion of particles due to the application of non-uniform electrical fields. The dielectrophoretic motion is determined …

Go to article

Detection Of Teeth Surface Defects Using Fiber Optic Displacement Sensor / Adi Izhar Che Ani, Che Ani Adi Izhar Jan 2012

Detection Of Teeth Surface Defects Using Fiber Optic Displacement Sensor / Adi Izhar Che Ani, Che Ani Adi Izhar

Student Works (2010-2019)

Fiber optic displacement sensor has been used recently for general medical diagnostics and in industry for the characterization and detection of defects in engineering components. However the lack of understanding of parameter performance of such a sensor in teeth has largely precluded its application to dentistry. This research describes sensor system adopting an intensity modulation technique that used a concentric type bundled optical fiber as a probe in conjunction with the real teeth, artificial teeth, hybrid composite resin teeth and mirror as the reflecting targets. The performance of the sensor is investigated on the linear range, sensitivity and the peak …

Go to article

Neuro-Fuzzy Based Hybrid Method For Modeling And Control Of Ph Neutralization / Mohd Fauzi Zanil, Zanil Mohd Fauzi Jan 2012

Neuro-Fuzzy Based Hybrid Method For Modeling And Control Of Ph Neutralization / Mohd Fauzi Zanil, Zanil Mohd Fauzi

Student Works (2010-2019)

The pH neutralization is regarded as one of the fundamental parts of industrial chemical process. In electrochemical industry for example, heavy metals must be recovered (by reducing the solubility of the metals) from waste streams by controlling the pH value to prevent polluting the environment. The pH neutralization shows strong nonlinear characteristics because of feed condition. Theoretically, the nonlinear effects for this process come from negative logarithm of ionic hydrogen, where process dynamic occurs when the hydrogen ions increase or decrease during neutralization process and because of dynamic nonlinearity called the ‘‘S-shape’’ curve which consists of extreme sensitivity and insensitivity …

Go to article

Automatic Recognition Of Freshwater Algae (Oscillatoria Sp.) Using Image Processing Techniques With Artificial Neural Network Approach / Awatef Saad Salem Saad, Awatef Saad Salem Saad Jan 2012

Automatic Recognition Of Freshwater Algae (Oscillatoria Sp.) Using Image Processing Techniques With Artificial Neural Network Approach / Awatef Saad Salem Saad, Awatef Saad Salem Saad

Student Works (2010-2019)

Cyanobacteria can be used as indicators to offer relatively exclusive information pertaining to ecosystem condition. Cyanobacteria react quickly and predictably to a broad range of pollutant. Thus provides potentially constructive early caution signals of worsening environment and the possible causes. Therefore the aim of this study is to develop an image processing and pattern recognition methods to detect and classify oscillatoria genus from Cyanobacteria found on tropical Putrajaya Lake (Malaysia). Computer-based image analysis and pattern recognition methods were used to construct a system that is able to identify, and classify selected Cyanobacteria genus automatically. An image analysis algorithm was implemented …

Go to article

Tensile Bond Strength Of Ceramics Luted To Composite Resin Core Materials / Sura Mohammed Abdulrazzaq Al-Janabi, Sura Mohammed Abdulrazzaq Al-Janabi Jan 2012

Tensile Bond Strength Of Ceramics Luted To Composite Resin Core Materials / Sura Mohammed Abdulrazzaq Al-Janabi, Sura Mohammed Abdulrazzaq Al-Janabi

Student Works (2010-2019)

Objective: The objective of this study was to evaluate the tensile bond strength of Vita In-Ceram® Zirconia coping Materials when luted to two different composite resin core materials with four different luting materials. Methods: One hundred and twenty ceramic specimens (8X5mm) were fabricated from a Vita In-Ceram® Zirconia kit which was prepared in a ceramic dental laboratory according the manufacturer’s instructions. One hundred and twenty composite resin specimens were prepared from Spectrum®TPH®3 (hybrid composite) (Dentsply, Germany) (n=60) and Composan Core DC (flowable composite) (Promedica, Germany) (n=60). The ceramic discs were divided into eight groups (n=15 for each): group 1: (Control) …

Go to article

Size-Controlled The Gold Nanoparticles On Silicon Suboxide Film Grown By Vapor Deposition Techniques / Chan Kee Wah, Kee Wah Chan Jan 2012

Size-Controlled The Gold Nanoparticles On Silicon Suboxide Film Grown By Vapor Deposition Techniques / Chan Kee Wah, Kee Wah Chan

Student Works (2010-2019)

In this work, size-control of the gold nanoparticles (Au NPs) on silicon suboxide (SiOx) film grown by vapor deposition techniques was studied. Investigation of the effects of surrounding medium on the structural properties of Au NPs was studied first. RF magnetron co-sputtering technique was used to prepare “supported ON” and “embedded IN” structure of Au/SiOx films. As-prepared samples were annealed at different temperatures from 400 to 1000 oC to study the effect of annealing temperature on the growth of Au NPs. For both structures of Au/SiOx film, size and shape of Au NPs were observed to be temperature-dependent. Au NPs …

Go to article

Chromosomal Alterations And Gene Pathways Of Tongue And Cheek Squamous Cell Carcinoma / Vincent Chong Vui King., Vincent Vui King Chong Jan 2012

Chromosomal Alterations And Gene Pathways Of Tongue And Cheek Squamous Cell Carcinoma / Vincent Chong Vui King., Vincent Vui King Chong

Student Works (2010-2019)

Introduction: Tongue and cheek squamous cell carcinoma (SCC) have different behaviours. In order to understand these behaviours, there is a need to look into the chromosomal alterations and gene pathways that maybe associated with oral cancer at these sites. Therefore, the objective of this study is to determine the chromosomal aberrations and gene pathways involved in tongue and cheek SCC using high resolution array based comparative genomic hybridization (aCGH). Methodology: A genome wide screening with array CGH (SurePrint G3 CGH 1x1M microarray) was performed using gDNA from 20 snap frozen fresh tissues consisting of 12 tongue and 8 cheek SCC …

Go to article

Tissue Culture And Biological Activities Of Gardenia Jasminoides Ellis / Reza Farzinebrahimi, Reza Farzinebrahimi Jan 2012

Tissue Culture And Biological Activities Of Gardenia Jasminoides Ellis / Reza Farzinebrahimi, Reza Farzinebrahimi

Student Works (2010-2019)

In order to establish an efficient in vitro propagation protocol for Gardenia jasminoides Ellis, Murashige and Skoog (MS) and woody plant medium (WPM) with different concentrations and types of auxin and cytokinin were used. The leaf explants of G. jasminoides were cultured on MS and WPM medium containing 3% sucrose and different concentrations of NAA, IBA, IAA, 2,4-D as aux-in and TDZ & Kn as cytokinin with range of 0-5 mg l-1 in order to obtain callus, shoot and root formation. After 2 weeks, the callus was formed on both types of media sup-plemented with various hormones at different concentrations. …

Go to article

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

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

Student Works (2010-2019)

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

Go to article

A Comparative Study Of Two Orthologous Gene Identification Methods On Synteny Block Inference / Chow Kingsley, Kingsley Chow Jan 2012

A Comparative Study Of Two Orthologous Gene Identification Methods On Synteny Block Inference / Chow Kingsley, Kingsley Chow

Student Works (2010-2019)

A synteny block is a set of orthologous genes that share the same relative ordering on the chromosomes of two species. Synteny analysis at the genome scale is a powerful means of identifying orthologs in a set of genomes of interest for downstream phylogenetic studies. OrthoCluster is a data mining tool for inferring synteny blocks among multiple genomes. Before using OrthoCluster to infer synteny blocks, orthologous gene relationships between the species of interest have to be identified first. In this study, we evaluated the effects of two different orthologous gene identification methods: InParanoid and ad hoc BLAST, on the number, …

Go to article

Spinal Motor Neuronal Organisation Of Selected Local Freshwater Fishes In Relation To Median Fin Innervations / Kwong Soke Chee, Soke Chee Kwong Jan 2012

Spinal Motor Neuronal Organisation Of Selected Local Freshwater Fishes In Relation To Median Fin Innervations / Kwong Soke Chee, Soke Chee Kwong

Student Works (2010-2019)

Fish fins are appendages which represent the limbs in higher vertebrates. In general, fish moves in the water by body undulation with the assistance of fins. To date, most of the studies focused on the innervations of limbs especially in mammals, such as rats, cats and monkeys. On the contrary, understanding on the innervations of the fish fin is still at its infancy as studies on the relevant field are relatively scarce. Hence, this study aimed to fill the knowledge gap, i.e. to investigate the organisation of spinal motor neurons in relation to the distribution of the median fins. For …

Go to article

Mutation Screening And Analysis Of The Apc Gene In Malaysian Fap Patients / Fiqri Dizar Khaidizar, Fiqri Dizar Khaidizar Jan 2012

Mutation Screening And Analysis Of The Apc Gene In Malaysian Fap Patients / Fiqri Dizar Khaidizar, Fiqri Dizar Khaidizar

Student Works (2010-2019)

Mutations in the APC tumour suppressor gene cause Familial Adenomatous Polyposis (FAP), a predisposition to colorectal cancer. This condition is characterized by adenomatous polyp formation in the colon and rectum which may advance to malignancy if not detected and treated early. FAP is 100% penetrant and segregates in an autosomal dominant manner. Screening for mutation in the APC gene is part of the preemptive genetic screening and risk assessment efforts for individuals with high risk of FAP. Knowledge of mutation spectrum that is prevalent in a certain population is essential to ensure precise prognosis of FAP by genetic testing. As …

Go to article

Application Of Profile Hidden Markov Model-Based Approach Using Hmmer3 On Major Histocompatibility Complex (Mhc) Class Ii Binding Peptides / Mazlina Ismail, Ismail Mazlina Jan 2012

Application Of Profile Hidden Markov Model-Based Approach Using Hmmer3 On Major Histocompatibility Complex (Mhc) Class Ii Binding Peptides / Mazlina Ismail, Ismail Mazlina

Student Works (2010-2019)

No abstract provided.

Go to article

Evaluation Of Neurite Outgrowth Stimulation And Neuroprotective Activities Of Hericium Erinaceus Extracts On Cell Line Ng 108-15 / Lai Puei-Lene, Puei-Lene Lai Jan 2012

Evaluation Of Neurite Outgrowth Stimulation And Neuroprotective Activities Of Hericium Erinaceus Extracts On Cell Line Ng 108-15 / Lai Puei-Lene, Puei-Lene Lai

Student Works (2010-2019)

Neurotrophic factors play an indispensable role in the functionality and development of the nervous system. One of the well-studied neurotrophic factors is nerve growth factor (NGF), which is required for the growth and differentiation of dorsal root ganglion and sympathetic ganglion neurons. Studies have shown that the bioactive compounds - hericenones and erinacines of Hericium erinaceus (Bull.: Fr.) Pers., a medicinal mushroom widely used in Japan, Korea and China, can induce NGF synthesis in nerve cells. This temperate mushroom has been successfully domesticated in Malaysia and cultivated in lowland conditions. The aim of this study was to evaluate the synergistic …

Go to article

Association Between Dietary Pattern And Β-Carotene Intake With Oral Cancer Risk / Helen Ng Lee Ching, Helen Lee Ching Ng Jan 2012

Association Between Dietary Pattern And Β-Carotene Intake With Oral Cancer Risk / Helen Ng Lee Ching, Helen Lee Ching Ng

Student Works (2010-2019)

No abstract provided.

Go to article

Gene Expression Patterns Of Cheek, Gum And Tongue Squamous Cell Carcinoma / Amyza Mohammed Saleh, Amyza Mohammed Saleh Jan 2012

Gene Expression Patterns Of Cheek, Gum And Tongue Squamous Cell Carcinoma / Amyza Mohammed Saleh, Amyza Mohammed Saleh

Student Works (2010-2019)

Clinical evidence suggested that biological behavior as well as response to treatment is different in OSCC arising from the different anatomical locations of the mouth and could be influenced by the activation or/and inactivation of different genes and pathways. Objective: Gene expression analysis of OSCC from different sites of the oral cavity was conducted to determine if there were significant differences in the expression pattern that could be associated with clinical observations. Materials and Methods: Formalin-fixed paraffin-embedded tissues from OSCC from cheek, gum, tongue and non-cancerous oral mucosal from the matching sites were used in microarray experiments (DASL, Illumina) to …

Go to article

A Survey On Plant Resource In Home Gardens In Penisular Malaysia / Mohd Raznam Ramli, Ramli Mohd Raznam Jan 2012

A Survey On Plant Resource In Home Gardens In Penisular Malaysia / Mohd Raznam Ramli, Ramli Mohd Raznam

Student Works (2010-2019)

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

Go to article

Alterations Of Microrna Expression Patterns In Human Cervical Carcinoma Cells (Ca Ski) Towards 1'S-1'-Acetoxychavicol Acetate (Aca) And Cisplatin (Cddp) / Phuah Neoh Hun, Neoh Hun Phuah Jan 2012

Alterations Of Microrna Expression Patterns In Human Cervical Carcinoma Cells (Ca Ski) Towards 1'S-1'-Acetoxychavicol Acetate (Aca) And Cisplatin (Cddp) / Phuah Neoh Hun, Neoh Hun Phuah

Student Works (2010-2019)

The main aims of this study were to investigate the combined effects of a natural compound 1’S-1’-acetoxychavicol acetate (ACA) with cisplatin (CDDP) on human cervical carcinoma cells Ca Ski, and to identify microRNAs (miRNAs) asscociated with response towards ACA and/or CDDP. Data obtained from MTT cell viability assays indicated that both ACA and CDDP induced dose- and time-dependent cytotoxicity on Ca Ski cells when used as a standalone agent. The in vitro studies also demonstrated that ACA potentiates the cytotoxic effects of CDDP when used in combination through synergistic interactions. The miRNA microarray was used to identify global miRNA expression …

Go to article

Structural Insight Into Ligand Binding Interactions With Den2 And Den3 Proteases / Pratheev Alagappan, Pratheev Alagappan Jan 2012

Structural Insight Into Ligand Binding Interactions With Den2 And Den3 Proteases / Pratheev Alagappan, Pratheev Alagappan

Student Works (2010-2019)

Dengue is a serious disease which has re-emerged to become a global health burden. Currently, the only method deployed to manage this disease is by vector control. The increasing spread and severity of the dengue virus infection give emphasis to the importance of drug discovery strategies that could efficiently and cost-effectively identify potent drugs for development. In support of this requirement, several computational approaches were applied in this work. Initially structural comparison between the DEN2 homology model and DEN3 crystal structures and molecular docking studies of reference ligands to the DENV NS2B/NS3 serine protease were carried out. These reference ligands …

Go to article

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

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

Student Works (2010-2019)

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

Go to article

Synthesis, Characterizations And Biological Properties Of Some Hydrazones And Their Metal Complexes / Siti Munirah Saharin, Saharin Siti Munirah Jan 2012

Synthesis, Characterizations And Biological Properties Of Some Hydrazones And Their Metal Complexes / Siti Munirah Saharin, Saharin Siti Munirah

Student Works (2010-2019)

The aim of the project as presented in this thesis concerns on the preparation, characterization and biological evaluation of Schiff bases derived from 3, 5- dihyroxybenzohydrazide and their Cu(II) and Zn(II) complexes. The Schiff bases were synthesized by the condensation of 3, 5-dihyroxybenzohydrazide and hydroxyacetophenone (BzyHAP-H), 5-bromo hydroxyacetophenone (BzyHAP-Br), 5- chloro hydroxyacetophenone (BzyHAP-Cl), salicylaldehyde (BzySAL-H), 5-bromo salicylaldehyde (BzySAL-Br), and 5-chloro salicylaldehyde (BzySAL-Cl). The BzyHAP series ligands were subsequently reacted with the acetate of Zn(II) whereas the BzySAL series ligands were reacted with Cu(II) and Zn(II) acetate in a 1:2 metal to ligand ratio. The chemical structures of the compounds were …

Go to article

Study On Structural Transformation Of Molybdenum Oxide Catalyst For Propane Oxydehydrogenation (Odh) Reaction / Durga Devi Suppiah, Durga Devi Suppia Jan 2012

Study On Structural Transformation Of Molybdenum Oxide Catalyst For Propane Oxydehydrogenation (Odh) Reaction / Durga Devi Suppiah, Durga Devi Suppia

Student Works (2010-2019)

Catalytic oxidative dehydrogenation (ODH) of propane is recognized as an attractive alternative process as compared to propane dehydrogenation which the latter requires higher reaction temperature. For ODH of propane, key points in synthesizing an active catalyst are the preparation method, surface reducibility, and acid-base properties. However, existing ODH catalysts gives low activity and poor selectivity. Combination of optimal activation thermal analysis and structural control can help to guide and gain insight into the structure-activity relationship of the nanostructured catalyst system. Molybdenum and vanadium oxide based catalyst has been identified as one of the most suitable catalyst for the reaction. However …

Go to article

Alkaloids Isolated From Litsea Grandis And Litsea Lancifolia (Lauraceae) / Syazreen Nadia Sulaiman, Sulaiman Syazreen Nadia Jan 2012

Alkaloids Isolated From Litsea Grandis And Litsea Lancifolia (Lauraceae) / Syazreen Nadia Sulaiman, Sulaiman Syazreen Nadia

Student Works (2010-2019)

The phytochemical study on the leaves of Litsea grandis and on the barks of Litsea lancifolia involved extraction and separation of alkaloids by using dichloromethane as a solvent. The crude alkaloids obtained were subjected to extensive chromatographic techniques such as thin layer chromatography (TLC) and column chromatography (CC). The structural elucidations of the purified alkaloids were performed with the aid of spectroscopic methods notably 1D-NMR (1H, 13C, DEPT) and 2D-NMR(COSY, HMQC, HMBC, NOESY), UV, IR and LCMS-IT-TOF. The chemical study on the leaves of Litsea grandis gave three alkaloids; one aporphine (laurotetanine 69) and two benzylisoquinoline (reticuline 67 and N-methylisococlaurine …

Go to article

In Vitro Cultures Of Curcuma Mangga Val. For The Production Of (E)-Labda-8(17), 12-Diene-15, 16-Dial / Tamil Chelvan Meenakshi Sundram, Tamil Chelvan Meenakshi Sundram Jan 2012

In Vitro Cultures Of Curcuma Mangga Val. For The Production Of (E)-Labda-8(17), 12-Diene-15, 16-Dial / Tamil Chelvan Meenakshi Sundram, Tamil Chelvan Meenakshi Sundram

Student Works (2010-2019)

Curcuma mangga Val., commonly known as the mango ginger has been used traditionally as a seasoning for food and as a treatment for stomach aches, fever, and cancer. Due to its medicinal importance, a systematic approach was taken to establish a rapidly growing suspension culture of C. mangga. In initiating callus, various responses were obtained from shoot bud explants cultured on MS basal medium supplemented with different concentrations of 2,4-D, NAA and IAA either alone or in combinations. Different concentrations of sucrose were also tested. Rapid growing friable callusobtained from shoot explants cultured on MS basal medium supplemented with 1 …

Go to article

Synthesis And Characterization Of Unsupported Copper Sulfide For Mercury Trapping In Aqueous System / Yap Pei Lay, Pei Lay Yap Jan 2012

Synthesis And Characterization Of Unsupported Copper Sulfide For Mercury Trapping In Aqueous System / Yap Pei Lay, Pei Lay Yap

Student Works (2010-2019)

Two phase pure copper sulfides, rhombohedral phase digenite (Cu9S5) and hexagonal phase covellite (CuS) have been successfully prepared via hydrothermal method using copper nitrate and sodium thiosulfate without any assisting agent. The structural, chemical, and thermal properties of the as-synthesized phase pure systems were investigated with various characterization techniques, including powder X-ray diffraction (PXRD), scanning and transmission electron microscopy (SEM and TEM), BET gas sorption, X-ray fluorescence (XRF), energy dispersive X-ray scpectroscopy (EDX), thermogravimetric analysis coupled to mass scpectroscopy (TGA-MS), as well as differential scanning calorimetry (DSC) methods. In this study, the phase pure covellite has shown a potential ability …

Go to article

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

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

Student Works (2010-2019)

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

Go to article

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

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

Student Works (2010-2019)

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

Go to article

Molecular Sequence And Structural Comparison Of Bace1 And Bace2 / Hoda Mirsafian, Hoda Mirsafian Jan 2012

Molecular Sequence And Structural Comparison Of Bace1 And Bace2 / Hoda Mirsafian, Hoda Mirsafian

Student Works (2010-2019)

Beta-Secretase is a transmembrane aspartic protease that cleaves the amyloid precursor protein (APP) to generate amyloid beta peptide (Aβ) that is believed to be responsible for the Alzheimer’s disease (AD). Beta-Secretaes include BACE1 and BACE2 which are close homologues, sharing 61.5% similarity and 45% identity at the amino acid level. BACE1 is responsible for generating amyloid plaques in Alzheimer’s disease through cleaving Aβ peptides from the amyloid precursor protein, however, the fragments of Aβ produced by BACE2-cleaved have not been observed in senile plaques in AD. The early onset of dementia in patients with Down’s syndrome is believed to be …

Go to article

Population Genetics And Evaluation Of Diallel Cross Of Four Red Tilapia Populations In Malaysia / Kayal Vizi A/P Karuppannan, Kayal Vizi Karuppannan Jan 2012

Population Genetics And Evaluation Of Diallel Cross Of Four Red Tilapia Populations In Malaysia / Kayal Vizi A/P Karuppannan, Kayal Vizi Karuppannan

Student Works (2010-2019)

Tilapia is an important farmed freshwater fish in Malaysia. Tilapia farming was introduced in Malaysia in the 1940’s. In 2003, tilapia accounted 21,417 tons of total freshwater aquaculture production. Red hybrid is the most popular tilapia species cultured in Malaysia. One of the constraints faced by the industry is quality of fries. There are quite a number of private hatcheries in Malaysia producing tilapia fries and not much is known about their quality with respect to their genetic variability. Thus this study attempted to characterize the four study populations and one standard population, which were PKPS (PS), Bentong (BT), Enggor …

Go to article

First Prev Next Last