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

Digital Commons Network™

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

2011

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 17251 - 17280 of 20338

Full-Text Articles in Entire DC Network

Phytochemical And Biological Activity Study On Pseuduvaria Rugosa (Annonaceae) / Hairin Taha, Taha Hairin Jan 2011

Phytochemical And Biological Activity Study On Pseuduvaria Rugosa (Annonaceae) / Hairin Taha, Taha Hairin

Student Works (2010-2019)

The study of phytochemical constituents on the bark of Pseuduvaria Rugosa from the family Annonaceae has resulted in the isolation and characterization of aporphine alkaloids, benzo[7]annulene and tripenoids. Six aporphine alkaloids have been isolated from the dichloromethane and methanol crude extract of which three of them are new compounds. The known alkaloids were liriodenine 1, ouregidione 5, and Nmethylouregidione 11, whereas the new alkaloids were 3-amino-1,2-dimethoxy-4,5- dioxoaporphine (pseuduvarine A) 36, N-methyl-3-amino-1,2-dimethoxy-4,5- dioxoaporphine (pseuduvarine B) 37 and 3-hydroxy-1,2-dimethoxy-3,4-dioxoaporphine (pseuduvarine C) 38. The aporphine alkaloids with a substituted amino group at position C-3 in ring A have never been discovered in any …

Go to article

Coronal Microleakage Of Different Post Systems Used In Endodontically Treated Teeth / Fatma K. Omar Soltan, Fatma K. Omar Soltan Jan 2011

Coronal Microleakage Of Different Post Systems Used In Endodontically Treated Teeth / Fatma K. Omar Soltan, Fatma K. Omar Soltan

Student Works (2010-2019)

No abstract provided.

Go to article

The Effect Of Phenotypic Switching On The Biological Properties Of Candida Krusei / Mohd Hafiz Arzmi, Arzmi Mohd Hafiz Jan 2011

The Effect Of Phenotypic Switching On The Biological Properties Of Candida Krusei / Mohd Hafiz Arzmi, Arzmi Mohd Hafiz

Student Works (2010-2019)

Candida krusei has been identified as an emerging pathogen after Candida albicans and Candida glabrata. Until today, the ability to switch its phenotype in unfavourable environment has not been reported in Candida krusei. This study was carried out in order to evaluate the phenotypic switching ability of Candida krusei and to access how this ability affects the biological properties, adherence capacity and susceptibility towards chlorhexidine (CHX), amphotericin B, nystatin, Piper betle and Nigella sativa aqueous extracts. To induce the switched generations, Candida krusei was cultured on yeast extract potato dextrose (YEPD) agar containing 0.05% of phloxine B. Following a 5-day …

Go to article

Genetic Diversity Of Plasmodium Falciparum Isolated From Yemen Based On The Genes Of Merozoite Surface Proteins (Msp-1 And Msp-2) / Nazeh Mohammed Al-Abd Ali, Nazeh Mohammed Al-Abd Ali Jan 2011

Genetic Diversity Of Plasmodium Falciparum Isolated From Yemen Based On The Genes Of Merozoite Surface Proteins (Msp-1 And Msp-2) / Nazeh Mohammed Al-Abd Ali, Nazeh Mohammed Al-Abd Ali

Student Works (2010-2019)

Malaria is a major health problem causing substantial morbidity and mortality with Plasmodium falciparum being the causative agent of the most severe and deadly form of malaria in humans. In Yemen Malaria is one of the most serious health problems. About 60% of the populations live in areas with malaria transmission. P. falciparum is the predominant species and accounts for more than 90% of malaria cases. Information on the nature and extent of genetic diversity within P. falciparum is essential for understanding the mechanism underlying the pathology of malaria, the acquisition of immunity, the spread of drug resistance and the …

Go to article

The Effects Flooding On House Prices: Two Case Studies In Malaysia / Abdul Mutalib Bin Mohammad Beksin., Abdul Mutalib Mohammad Beksin Jan 2011

The Effects Flooding On House Prices: Two Case Studies In Malaysia / Abdul Mutalib Bin Mohammad Beksin., Abdul Mutalib Mohammad Beksin

Student Works (2010-2019)

Flooding of residential property is a real and growing phenomenon in the Malaysia and is causing short and long-term detriment of various kinds to its victims. The issue of potential decrease in value of those properties which are located on the floodplain, though much discussed in the media, has received scant attention in the Malaysian research literature. An extensive literature survey of Anglo-Saxon and US origin has revealed a need for methodological innovation in the field of temporal impact of flooding and the inadequacy of the current paradigms for inclusion of insurance into flood modelling. The main thrust of this …

Go to article

Effect Of Urea On Warfarin-Human Serum Albumin Complex: Fluorscence Study / Nasim Sakhaei, Nasim Sakhaei Jan 2011

Effect Of Urea On Warfarin-Human Serum Albumin Complex: Fluorscence Study / Nasim Sakhaei, Nasim Sakhaei

Student Works (2010-2019)

In order to evaluate the change in the drug binding ability of human serum albumin (HSA) with the alteration in its native conformation, effect of urea was investigated on the tertiary structure of HSA as well as on its interaction with warfarin, an anticoagulant drug, using fluorescence spectroscopy. Such studies are important from the physiological point of view as alteration in the drug binding capacity of HSA has been noted in several diseases. Both intrinsic fluorescence and tryptophan (Trp) fluorescence were used to monitor these urea-induced changes upon excitation at 280 and 295nm respectively. Fluorescence spectra of native HSA were …

Go to article

Multiresidue Determination Of Pesticides In Olive And Palm Oil By Lc-Qtof-Ms / Elham Sobhanzadeh, Elham Sobhanzadeh Jan 2011

Multiresidue Determination Of Pesticides In Olive And Palm Oil By Lc-Qtof-Ms / Elham Sobhanzadeh, Elham Sobhanzadeh

Student Works (2010-2019)

In this study a comprehensive evaluation of two efficient sample treatment methods based on LLE/freezing-out coupled with matrix solid-phase dispersion-sonication (UA-MSPD) and precipitation at low temperature followed by dispersive solid-phase extraction (d-SPE) has been performed for determination of dimethoate, malathion, carbaryl, simazine, terbuthylazine, atrazine and diuron in both olive and palm oil using liquid chromatography time-of-flight mass spectrometry (LC-QTOF-MS) and electrospray as the ionization source. Identification and confirmation of the compounds were based on retention time matching along with the accurate mass measurements of the protonated molecules ([M+H]+) and their main fragment ions. Typical electrospray ionization parameters such as nebulizer …

Go to article

Effect Of Plant Growth Regulators On Fruit Growth And Quality Development Of Syzygium Samarangense (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 Syzygium Samarangense (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 …

Go to article

Effect Of Anion Size And Nano Fumed Silica On Structural, Thermal And Electrical Properties Of Chitosan Polymer Electrolytes / Shanti Navaratnam, Shanti Navaratnam Jan 2011

Effect Of Anion Size And Nano Fumed Silica On Structural, Thermal And Electrical Properties Of Chitosan Polymer Electrolytes / Shanti Navaratnam, Shanti Navaratnam

Student Works (2010-2019)

Chitosan has drawn attention as a potential polymer host for polymer electrolytes due to its promising properties. In the present study, an attempt has been made to determine the role of the different anions, namely, CH3COO− and CF3SO3 −, on the ionic conductivity of chitosan-based polymer electrolyte. The effect of filler on the sample with the highest conducting anion sample was also investigated. Many research studies on polymer electrolytes have shown that the dielectric values at high frequencies and electric modulus at low frequencies are constant. In this study, it has been further investigated to validate such findings. Chitosan-based polymer …

Go to article

Physical Properties Of Guanidinium Trifluoromethanesulfonate-Methyldiethanolamine Aqueous Mixtures And Their Co2 Absorption Capacities / Nor Asrina Sairi, Sairi Nor Asrina Jan 2011

Physical Properties Of Guanidinium Trifluoromethanesulfonate-Methyldiethanolamine Aqueous Mixtures And Their Co2 Absorption Capacities / Nor Asrina Sairi, Sairi Nor Asrina

Student Works (2010-2019)

In this work, the physical properties i.e. density, viscosity and CO2 solubility studies were conducted on the aqueous systems of N-methyldiethanolamine (MDEA) and guanidinium trifluoromethanesulfonate [gua][OTf]. The studies were carried out at various concentration of MDEA (1 – 4 M) and [gua][OTf] (0.1 – 2 M). The temperature and pressure were also varied depending on the study involved. The studies on densities and viscosities of binary ([gua][OTf] - H2O) and ternary ([gua][OTf] - MDEA - H2O) systems were carried out at a wide temperature range from 293 to 363 K and at atmospheric pressure. The results show that the density …

Go to article

Assessment Of Bacterial Community Patterns From Ecologically Distinct Antarctic Soil Environments / Chun Wie Chong, Chun Wie Chong Jan 2011

Assessment Of Bacterial Community Patterns From Ecologically Distinct Antarctic Soil Environments / Chun Wie Chong, Chun Wie Chong

Student Works (2010-2019)

It is commonly known that bacteria are ubiquitously distributed in soil environments. They are heavily involved in the biogeochemical cycles and are vital in maintaining soil ecological functions. These functional roles of bacteria are especially important in the extreme and harsh environments of Antarctica where the terrestrial trophic interactions are generally limited to microorganisms due to restricted development of terrestrial plant and animal communities. In order to assess the spatial distribution and taxonomic composition of soil bacterial community in Antarctica, soils were collected from a range of geographically and environmentally distinct locations. These included relatively milder but variable environments on …

Go to article

Improvement Of Okra (Abelmoschus Esculentus) Growth, Yield And Qualtiy By Using Plant Growth Regulators In Vivo And In Vitro Conditions / Mekhled Mutiran Alenazi, Mekhled Mutiran Alenazi Jan 2011

Improvement Of Okra (Abelmoschus Esculentus) Growth, Yield And Qualtiy By Using Plant Growth Regulators In Vivo And In Vitro Conditions / Mekhled Mutiran Alenazi, Mekhled Mutiran Alenazi

Student Works (2010-2019)

Studies were conducted to investigate the effects of plant growth regulators on okra growth, yield and quality development using different techniques of application in a commercial vegetable field in Banting, Selangor, Malaysia. The experimental design employed on the commercial field was a randomized complete block design (RCBD). The different growth hormones were applied directly, internally, to the selected parts of the okra plant. In the flower injection treatment, injection was applied on the okra flower using IAA at different concentrations. The pod set percentage, and length was maximal in the 25 mg/l IAA treatment compared to the control. Higher percentage …

Go to article

Mycotoxigenic Fungi And Mycotoxins Contaminating Red Rice At Consumer Level In Selangor, Malaysia / Nik Iskandar Putra Samsudin, Samsudin Nik Iskandar Putra Jan 2011

Mycotoxigenic Fungi And Mycotoxins Contaminating Red Rice At Consumer Level In Selangor, Malaysia / Nik Iskandar Putra Samsudin, Samsudin Nik Iskandar Putra

Student Works (2010-2019)

Red rice is a product of rice fermentation by fungi from the genus Monascus notably the M. purpureus, M. ruber, and M. pilosus. Although the traditional method of its preparation does not necessarily adhere to safety and health regulation, it is still widely consumed by Chinese as traditional herbal remedy believed to possess outstanding and diverse industrial, clinical, and food applications. The present study was undertaken to determine the occurrence of mycotoxigenic fungi and mycotoxins present on red rice at consumer level in Selangor, Malaysia. In this study, 50 samples of red rice were obtained from nine administrative districts of …

Go to article

Determination And Assessment Of Potential Mobility Of Heavy Metals In Solid Samples By Sequential Extraction Procedures (Sep) / Keivan Nemati, Keivan Nemati Jan 2011

Determination And Assessment Of Potential Mobility Of Heavy Metals In Solid Samples By Sequential Extraction Procedures (Sep) / Keivan Nemati, Keivan Nemati

Student Works (2010-2019)

The use of sequential extraction schemes for fractionation of metals in different substrates has grown exponentially over the past two decades. Despite the popularity of these schemes, they have been criticized for metal redistribution and the reagents used. The work presented in this dissertation is aimed at addressing these problems by, (i) a Tessier sequential extraction (ii) a BCR sequential extraction schemes and modified BCR method, (iii) a comparison between Tessier and BCR method for shrimp aquaculture sludge. From the sequential extraction, Cd, Mn and Pb were mostly found in exchangeable/carbonate form, showed its susceptibility to be leached easily. Also …

Go to article

Chromosomal Alterations In Oral Cancer For Selected Indian And Indigenous Population / Noor Julieana Mat Amin, Mat Amin Noor Julieana Jan 2011

Chromosomal Alterations In Oral Cancer For Selected Indian And Indigenous Population / Noor Julieana Mat Amin, Mat Amin Noor Julieana

Student Works (2010-2019)

Introduction: In the Malaysian population, the Indians were identified as having a higher oral cancer (OC) risk compared to Malays, Chinese and other ethnicities with betel quid chewing contributing the major factor among Indian female. Cancer progresses through a series of histopathological stages where the progression is thought to be driven by the accumulation of genetic alterations (Garnis et. al., 2009). Therefore, the identification of chromosomal alterations will not only enhance the understanding of the biology in this process, but will also identify important genes that might involve in oral carcinogenesis. Thus, this study utilised array Comparative Genomic Hybridization (arrayCGH) …

Go to article

Mining And Validation Of Est-Microsatellites In Freshwater Prawns, Macrobrachium Rosenbergii / Shairah Abdul Razak, Abdul Razak Shairah Jan 2011

Mining And Validation Of Est-Microsatellites In Freshwater Prawns, Macrobrachium Rosenbergii / Shairah Abdul Razak, Abdul Razak Shairah

Student Works (2010-2019)

The current study conducted in purpose to illustrate the utility of EST-derived SSR in characterizing wild populations of M. rosenbergii in Malaysia‟s rivers. A novel set of EST-SSR generated from RNA of M. rosenbergii were validated in a full panel of 120 samples from four wild populations through Polymerase Chain Reaction (PCR). Seven EST-SSR loci were identified, characterized, and evaluated on 30 individuals each from the populations namely Negeri Sembilan, Kedah, Sarawak, and Terengganu. The average polymorphic informative content value (PIC) for these seven primers was found to be 0.6208 indicating considerable degree of polymorphism with number of alleles detected …

Go to article

Evaluation Of Obturation Quality Using Gutta-Percha And A Resin-Based Material With Different Techniques / Nashwan Abdullah Abdo Al-Afifi., Nashwan Abdullah Abdo Al-Afifi Jan 2011

Evaluation Of Obturation Quality Using Gutta-Percha And A Resin-Based Material With Different Techniques / Nashwan Abdullah Abdo Al-Afifi., Nashwan Abdullah Abdo Al-Afifi

Student Works (2010-2019)

Introduction: Gutta-percha (GP) has been accepted as the “gold standard” root filling material. It is the material against which most others are compared. The adhesive potential of GP to radicular dentine has been shown to be far from satisfactory. Therefore, resin-based materials that address many of the limitations of the GP/sealer combinations have been introduced. They are claimed to produce the so-called “monoblock” that is a gap-free union between core material and sealer, which adheres and penetrates into dentinal tubules. Examples of these resin-based filling materials include Resilon, EndoREZ and Guttaflow. Objectives: The objectives of this study were to evaluate …

Go to article

Association Between Interleukin-10 (Il-10) Promoter Polymorphisms And Non Hodgkin Lymphoma In Malaysian Population / Somayeh Fani, Somayeh Fani Jan 2011

Association Between Interleukin-10 (Il-10) Promoter Polymorphisms And Non Hodgkin Lymphoma In Malaysian Population / Somayeh Fani, Somayeh Fani

Student Works (2010-2019)

Non-Hodgkin Lymphoma is one of the malignant diseases that has the most rapidly increasing incidence in many countries. IL10 is a potent cytokine, which has been considered to be involved in pathogenesis of non-Hodgkin lymphoma. Furthermore allelic variations in the genes that has been implicated in inflammation, such as interleukin 10 are candidate risk factors for NHL. This study was been conducted as a case-control experiment on 320 patients with NHL, 285 clinically normal subjects for IL10-1082 G/A SNP and 312 patients with NHL, 284 clinically normal subjects for IL10-819 C/T SNP. After DNA extraction, Polymerase Chain Reaction (PCR) was …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

First Prev Next Last