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2014

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The Community Structure Of Forensically Important Flies And Beetles On An Altitudinal Gradient On Gunung Ulu Kali, Peninsular Malaysia / Thary Bin Gazi, Thary Gazi Jan 2014

The Community Structure Of Forensically Important Flies And Beetles On An Altitudinal Gradient On Gunung Ulu Kali, Peninsular Malaysia / Thary Bin Gazi, Thary Gazi

Student Works (2010-2019)

While present in crime scenes and succession studies, little is known about the ecology and taxonomy of forensically important necrophagus beetles. Natural gradients such as mountains were used to determine how certain groups of animals react to changes in the environment. A survey of forensically important beetles was conducted along an altitudinal gradient on Gunung Ulu Kali using pitfall trapping. The corresponding diversity of blowflies was collected in the same site. Thirty three species of beetles were recorded, with the highest species richness found in the lowland forest at 200m. The beetle and fly communities above 1000m height had less …

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Alkaloids Of Catharanthus Roseus And Their Hypoglycemic Activity / Tiong Soon Huat, Soon Huat Tiong Jan 2014

Alkaloids Of Catharanthus Roseus And Their Hypoglycemic Activity / Tiong Soon Huat, Soon Huat Tiong

Student Works (2010-2019)

Catharanthus roseus is a medicinal shrub plant used in traditional medicine treatment by local in India, South Africa, China and Malaysia for diabetes. Six known alkaloids and one new alkaloid namely, vindoline, vindolinine, perivine, vindorosine, vindolicine, serpentine and vindogentianine were isolated and identified from dichloromethane extract of Catharanthus roseus’ leaves. The leaves dichloromethane extract of Catharanthus roseus and alkaloids were not cytotoxic towards β-TC6 cells at 50.0 μg/mL except vindolinine and perivine with IC50 at 20.5 ± 3.6 and 46.7 ± 4.4 μg/mL. All five alkaloids tested showed higher glucose uptake in β-TC6 cells at treatment of 12.5 μg/mL and …

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Determination Of Simazine In Fish And Shrimp Samples Using Ultra Performance Liquid Chromatography Tandem Mass Spectrometer (Uplc-Ms/Ms) / Amirul Ashraf Bin Jamaluddin, Jamaluddin Amirul Ashraf Jan 2014

Determination Of Simazine In Fish And Shrimp Samples Using Ultra Performance Liquid Chromatography Tandem Mass Spectrometer (Uplc-Ms/Ms) / Amirul Ashraf Bin Jamaluddin, Jamaluddin Amirul Ashraf

Student Works (2010-2019)

Ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was successfully developed and validated for the analysis of simazine in fish and shrimp samples at trace levels to meet European Union requirements and import requirements from certain countries. This method also utilized a simple, fast and inexpensive extraction technique called QuECheRS (quick, easy, cheap, rugged and safe). Matrix-matched calibration standard are used to construct a calibration curve and Ethoprophos is used as internal standard. At optimal conditions, the chromatographic separation was achieved in less than 10 minutes with the total run time of 13.5 minutes. The mean recoveries for fish …

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Synthesis Of Palm-Based Zinc Soaps For Compounding In Rubber Products / Chua Wei Keong, Wei Keong Chua Jan 2014

Synthesis Of Palm-Based Zinc Soaps For Compounding In Rubber Products / Chua Wei Keong, Wei Keong Chua

Student Works (2010-2019)

The melting point is the main factor in which metallic soap is to use as additives for the rubber manufacturing. This rubber compounder is the making stock for transfer moulding, compression, extruded profiles or hoses, the curing temperature or moulding and the duration will limit to the materials to be embedded on the surface of the compound. Zinc stearate has the lowest melting point as compared to other metallic soap. Although it has a low melting point, but it still consider high and problematic to the compounding system. The main objective in this study is to synthesis a various zinc …

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Synthesis, Characterization And Biological Applications Of Some Acetylpyridine, Acetophenone Derivatives And Their Metal Complexes / Nura Suleiman Gwaram, Nura Suleiman Gwaram Jan 2014

Synthesis, Characterization And Biological Applications Of Some Acetylpyridine, Acetophenone Derivatives And Their Metal Complexes / Nura Suleiman Gwaram, Nura Suleiman Gwaram

Student Works (2010-2019)

A series of compounds derived from 2-acetylpyridne or acetophenones with morpholine, piperazine and piperidine moeity were synthesized and structurally characterized. The compounds were analysed for in silico, in vitro and in vivo biological applications (anti-cancer, anti-bacteria, anti-Alzheimer and anti-ulcer). They were first screened for in vitro anti-bacterial activity against Methicillin-resistant Staphylococcus aureus (MRSA), Acinetobacter baumanni (AC), Klebsiella pneumonie (KB) and Pseudomonas aeruginosa (PA) using the disc diffusion and micro broth dilution assays. Based on the overall results, they showed the highest activities against MRSA while a weak antibacterial activity was observed against A. baumanii and P. Aeruginosa. Another second series …

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Purification And Characterization Of Isoforms Of Glutathione S-Transferase (Gst) From Acinetobacter Calcoaceticus Y1 / Chee Chin Soon, Chin Soon Chee Jan 2014

Purification And Characterization Of Isoforms Of Glutathione S-Transferase (Gst) From Acinetobacter Calcoaceticus Y1 / Chee Chin Soon, Chin Soon Chee

Student Works (2010-2019)

Bacteria were isolated from chemically-contaminated soil and the isolates were screened for glutathione S-transferase (GST) expression by spraying with monochlorobimane. The isolate with the most promising GST activity was later identified as Acinetobacter calcoacticus Y1 based on its 16S rRNA gene sequence. By using affinity chromatography, A. calcoaceticus Y1 putative GST (AcGST) was successfully purified and expressed GST subunit with molecular weight estimated at 23 kDa when analysed on sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE). The purified protein was then further analysed by using two-dimensional electrophoresis where two putative GST isozymes were identified and designated as AcGST-1 and AcGST-2. …

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Synthesis And Antioxidant Properties Of Some New Di-Tert-Butylphenol Derivatives Bearing Heterocyclic Ring / Raied Mustafa Shakir, Raied Mustafa Shakir Jan 2014

Synthesis And Antioxidant Properties Of Some New Di-Tert-Butylphenol Derivatives Bearing Heterocyclic Ring / Raied Mustafa Shakir, Raied Mustafa Shakir

Student Works (2010-2019)

The hindered phenolic compounds are known as one of the important antioxidants. Eleven new derivatives of aryl 1,3,4-oxadiazoles containing 2,6-di-tert-butylphenol were synthesized to increase the antioxidant ability. These oxadiazoles (coded as 2.12-2.22) were synthesized through the condensation of different aryl hydrazides with 3,5-di-tert-butyl-4-hydroxybenzoic acid in the presence of POCl3 as a dehydrating agent. The DPPH and FRAP assays showed that the antioxidant ability of these compounds depends on the type of substituents and their position in the phenyl ring. The sequence of substituents in order of their antioxidant activity are found to be 4-OH > 2-Me > 2,4-di-Me > 4-Me > OMe ≈ OEt …

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Effects Of Tea (Camellia Sinensis) On Antioxidant Potential And Fermentation Characteristics Of Yogurt / Premalatha A/P Muniandy, Premalatha Muniandy Jan 2014

Effects Of Tea (Camellia Sinensis) On Antioxidant Potential And Fermentation Characteristics Of Yogurt / Premalatha A/P Muniandy, Premalatha Muniandy

Student Works (2010-2019)

The present study investigated the effects of green, white and black tea (Camellia sinensis; 2% w/v) on the fermentation of milk and antioxidant potential of yogurt. Each tea (water extract) was added into milk-starter culture mixture and incubation was carried out at 42°C until pH was reduced to 4.5. The yogurts were then refrigerated (4°C) for up to 21 days and samples were analysed for antioxidant potential (diphenyl picrylhydrazyl (DPPH) radical scavenging, ferric reducing antioxidant power (FRAP) and ferrous ion chelating (FIC) assays), pH, titratable acid and viable yogurt bacteria counts. Tea yogurts had higher antioxidant potentials (p < 0.05) than plain yogurt with green tea yogurt (GTY) having the highest FRAP (2.49 - 2.98 mmol Fe2+ E/L) and black tea yogurt (BTY) having the highest FIC (87.50 - 89.87 %) activity throughout the storage period. Both GTY (90.07 - 96.74%) and white tea yogurt (WTY; 89.83 - 96.39%) showed the highest DPPH radical scavenging activity throughout the storage period. The presence of green and black tea water extracts prolonged the milk fermentation time (>270 minutes …

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Separation Of Metallic And Semiconducting Single Walled Carbon Nanotubes Using Aqueous Two-Phase Technique / Malcolm Tang Siong Yii, Siong Yii Malcolm Tang Jan 2014

Separation Of Metallic And Semiconducting Single Walled Carbon Nanotubes Using Aqueous Two-Phase Technique / Malcolm Tang Siong Yii, Siong Yii Malcolm Tang

Student Works (2010-2019)

The presence of metallic single-walled carbon nanotubes (M-SWCNT) in as-prepared single-walled carbon nanotubes (SWCNT) poses a significant hurdle to integrate carbon nanotubes into semiconductor electronics. Here the findings of enriching semiconducting single-walled carbon nanotubes (S-SWCNT) using an aqueous two-phase system (ATPS) is reported. The solution containing as received SWCNT and polyethylene glycol (PEG), dextran, N-methylpyrrolidone (NMP) and water effectively separates into two distinct phases, with S-SWNT dominant in one phase while the M-SWCNT congregates in another phase. The separation process is due to the attraction of amine and S-SWCNT as reported by Chattopadhyay. Micro-Raman spectroscopy and Ultraviolet-Visible spectroscopy results show …

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Phenotypic Characterization Of Amoeboid Forms Of Trichomonas Vaginalis / Kasthuri A/P Jewarethnam, Kasthuri Jewarethnam Jan 2014

Phenotypic Characterization Of Amoeboid Forms Of Trichomonas Vaginalis / Kasthuri A/P Jewarethnam, Kasthuri Jewarethnam

Student Works (2010-2019)

Trichomonas vaginalisis a flagellated protozoan parasite that causes significant health drawbacks to humans, predominantly in women by causing a non-viral sexually transmitted disease known as trichomoniasis. Different morphological properties of T. vaginalis were recognized as the key for infections in humans with trophozoites and pseudocysts as the two notable forms. Recently, amoeboid form was identified in suspension cultures and was reported as an integral life cycle of T. vaginalis. The present study was conducted to study the phenotypic characteristics of amoeboid forms in suspension culture i.e. growth profile, evaluating factors that trigger formation of this shape, staining characteristics and transformational …

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Studies On Chemical Constituents And Biological Activities Of Nauclea Officinalis And Nauclea Subdita / Liew Sook Yee, Sook Yee Liew Jan 2014

Studies On Chemical Constituents And Biological Activities Of Nauclea Officinalis And Nauclea Subdita / Liew Sook Yee, Sook Yee Liew

Student Works (2010-2019)

The phytochemical studies on two species of Rubiaceae; Nauclea officinalis and Nauclea subdita have been carried out. Twenty one compounds were successfully isolated and purified using several chromatography techniques such as column chromatography (CC), thin layer chromatography (TLC), preparative thin layer chromatography (PTLC), and high performance liquid chromatography (HPLC). The compounds are naucline, nauclefine, naucletine, angustine, angustoline, 3,14-dihydroangustoline, angustidine, subditine, strictosamide, pumiloside, naucleficine, naucleactonin C, harmane, 1,2,3,4-tetrahydro-1-oxo-β-carboline, benzamide, cinnamide, blumenol B, blumenol A, β-sitosterol, stigmast-4-en-3-one and vanillin. Naucline and subditine are new indole alkaloids which were isolated from the bark of Nauclea officinalis and Nauclea subdita respectively. The structure of …

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Metallothionein Gene Expression And Genotoxic Effects Of Heavy Metals On Oreochromis Sp. / Elani Laili Juhari, Juhari Elani Laili Jan 2014

Metallothionein Gene Expression And Genotoxic Effects Of Heavy Metals On Oreochromis Sp. / Elani Laili Juhari, Juhari Elani Laili

Student Works (2010-2019)

Metallothionein is a small, cysteine rich protein that aids in ion homeostasis in a cell. It binds naturally to zinc and also has the tendency to bind to other metals as well if present in the cell. This study was conducted in order to determine the effects of heavy metals exposure on metallothionein expression and other genotoxic effects on the tilapia fish as test subjects. Oreochromis sp. was chosen as the test subject because of the many advantages of its characteristics and it can be easily found in Malaysian rivers. Test subjects were exposed to two types of metals which …

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Reactions Between Palm Stearin Alkyds With High Carboxylic Acid Content And Epoxidised Natural Rubber / Khong Yoke Kum, Yoke Kum Khong Jan 2014

Reactions Between Palm Stearin Alkyds With High Carboxylic Acid Content And Epoxidised Natural Rubber / Khong Yoke Kum, Yoke Kum Khong

Student Works (2010-2019)

Vulcanisation serves as a chemical process to transform weak and permanently deformable rubber into vulcanised rubber with ultimate elastic performance. Crosslinking of rubber using environment friendly crosslinker without any toxic additive offers a wide range of potential applications. In this work, self-vulcanisable rubber blend that utilises reaction between epoxidised natural rubber with 50 mol % of epoxidation (ENR50) and palm stearin alkyd at ambient temperature has been developed. Palm stearin alkyds were used as green crosslinkers in epoxidised natural rubber. The first alkyd (AlkydCO) was formulated with excess hydroxyl groups and low level of carboxyl groups, reflected from its hydroxyl …

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Phytochemical Studies And The Bioactivities Of Compounds From Ochrosia Oppositifolia, Rauvolfia Reflexa And Actinodaphne Machrophylla / Mehran Fadaeinasab, Mehran Fadaeinasab Jan 2014

Phytochemical Studies And The Bioactivities Of Compounds From Ochrosia Oppositifolia, Rauvolfia Reflexa And Actinodaphne Machrophylla / Mehran Fadaeinasab, Mehran Fadaeinasab

Student Works (2010-2019)

The chemical constituents of Ochrosia oppositifolia, Rauvolfia reflexa (Apocynacea) and Actinodaphne machrophylla (Lauracea) have been studied. The compounds were extracted from the bark and leaves of the plants using n-hexane, dichloromethane and methanol as solvents. The crudes were subjected to extensive chromatographic techniques such as column chromatography (CC), preparative thin layer chromatography (PTLC), and high performance liquid chromatography (HPLC). Structural elucidation was established through several spectroscopic methods, such as 1D-NMR (1H, 13C, DEPT, NOE), 2D-NMR (COSY, NOESY, HMQC, and HMBC), UV, IR, and MS (GCMS, LCMS and HREIMS) and comparison with the published data. In this study, a total of …

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Utility Of Bats (Chiroptera) As Ecological Indicators In Peninsular Malaysia / Khairunnisa Binti Syaripuddin, Khairunnisa Syaripuddin Jan 2014

Utility Of Bats (Chiroptera) As Ecological Indicators In Peninsular Malaysia / Khairunnisa Binti Syaripuddin, Khairunnisa Syaripuddin

Student Works (2010-2019)

As ecologists we are tasked with studying the effects of environmental changes on ecosystems, but it is impossible to study every species and every interaction. Therefore, a relatively small group of species must be chosen as a proxy for monitoring general patterns of ecological change. Bats might be suitable for the role as ecological indicators because they have high species richness and abundance, represent several distinct feeding guilds, occupy high trophic positions, and perform key ecosystem services such as pollination, seed dispersal, nutrient recycling and arthropod control. A critical prerequisite for an ecological indicator group is stable and accurate species …

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The Influence Of Chinese Architecture On Traditional Melaka Mosques / Somayeh Armani, Armani Somayeh Jan 2014

The Influence Of Chinese Architecture On Traditional Melaka Mosques / Somayeh Armani, Armani Somayeh

Student Works (2010-2019)

Since the sacred architecture manifests a clear reflection of each region's history, culture, and identity, the traditional mosques, as the symbols of Islamic art and architecture, always have intrigued countless architects and scholars worldwide. Although numerous materials have been documented about various mosques’ regional typologies, the Southeast Asian mosque architectural style has been surprisingly neglected. Since the advent of Islam in Southeast Asia during the 13th-15th centuries, innumerable traditional mosques with distinctive architectural form, constructional techniques, and ornamentation, very different from what is known as a mosque in Middle East and Central Asia, were erected in the region. Melaka, as …

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Genetic Diversity Of Gracilaria Changii And Gracilaria Edulis (Gracilariaceae,Rhodophyta) In Malaysian Waters / Yow Yoon Yen, Yoon Yen Yow Jan 2014

Genetic Diversity Of Gracilaria Changii And Gracilaria Edulis (Gracilariaceae,Rhodophyta) In Malaysian Waters / Yow Yoon Yen, Yoon Yen Yow

Student Works (2010-2019)

Gracilaria is the second largest genus of red algae that is widely distributed from the sub-boreal to tropical waters, and some are endemic to the Southeast Asian countries. G. changii (Xia et Abbott) Abbott, Zhang et Xia and G. edulis (Gmelin) Silva are potential species for commercialization in Malaysia as they have high yields of good quality agar with high gel strength for production of agarose and food grade agar. There is no cultivation of Gracilaria changii and Gracilaria edulis in Malaysia and regular sampling at various coastal areas in Peninsular Malaysia has indicated that the wild populations of these …

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Stability, Functionality And Biosafety Of Nicotiana Tabacum Expressing Anti-Cmv Antibodies / Ng Cheah Wei, Cheah Wei Ng Jan 2014

Stability, Functionality And Biosafety Of Nicotiana Tabacum Expressing Anti-Cmv Antibodies / Ng Cheah Wei, Cheah Wei Ng

Student Works (2010-2019)

Mosaic Virus (CMV) is a significant plant pathogen affecting various crops and plants in Malaysia. A single chain variable fragment (scFv) anti-CMV antibody was successfully developed via a scFv library constructed with mRNA from the spleen cells of a CMV coat protein-immunized mouse and transformed by Agrobacterium tumefaciens into tobacco plants (Nicotiana tabacum L. cv. White burley). In this study, the performance of primary transformants and 3 successive generations of Nicotiana tabacum expressing anti-CMV scFv were evaluated. An overall of 20% reduction in seed germination was observed as compared to wild type tobacco. All 4 generations did not exhibit any …

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Antibacterial Activities Of Selected Marine Fungi From Peninsular Malaysia / Audra Shaleena A/P Paliany, Audra Shaleena Paliany Jan 2014

Antibacterial Activities Of Selected Marine Fungi From Peninsular Malaysia / Audra Shaleena A/P Paliany, Audra Shaleena Paliany

Student Works (2010-2019)

Over the past few decades, scientists have come to acknowledge the growing importance of marine and marine-related resources for new drugs, pesticides and anti-fouling substances, with over 10,000 metabolites isolated from marine organisms to date. In an effort to tap into the pharmaceutical potential of marine fungi in Malaysia, selected marine derived endophytic and manglicolous fungi from the coastlines of Peninsular Malaysia were investigated for their antibacterial potential. The endophytic fungi in this study were isolated from two marine associated plants; Vitex rotundifolia L.f. and Ipomoea pes-caprae (L.) R.Br., from the east and west coast of Peninsular Malaysia respectively. A …

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Organic Petrological And Organic Geochemical Of Tertiary Coals Within The West Middle Block Of The Pinangah Coal Field, Sabah, Malaysia / Fatin Liyana Bt Alias, Fatin Liyana Alias Jan 2014

Organic Petrological And Organic Geochemical Of Tertiary Coals Within The West Middle Block Of The Pinangah Coal Field, Sabah, Malaysia / Fatin Liyana Bt Alias, Fatin Liyana Alias

Student Works (2010-2019)

The Tertiary Tanjong Formation coals exposed in the west middle block of the Pinangah Coalfield, central part of southern Sabah were analysed based on organic petrological and organic geochemical methods. The sediments of the Tanjong Formation were deposited in brackish water condition, based on limited biostratigraphic data (Collenette, 1965). The Tertiary Tanjong coals are humic and generally dominated by vitrinite, with significant amounts of liptinite and low amounts of inertinite macerals. Total organic carbon contents (TOC) of the coals range from 51.2 to 77.7 wt. %, and yield of bitumen values ranging from 57300 to 140000 ppm, which meet the …

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Quantification Of Arsenic In Soil By Inductively Coupled Plasma – Optical Emission Spectrometry / Vickneswary A/P Letchmanan, Vickneswary Letchmanan Jan 2014

Quantification Of Arsenic In Soil By Inductively Coupled Plasma – Optical Emission Spectrometry / Vickneswary A/P Letchmanan, Vickneswary Letchmanan

Student Works (2010-2019)

In this study, determination of arsenic in soil samples was done by Inductively Coupled Plasma – Optical Emission Spectrometry. Soil from five different locations with three sampling points was collected. The location chosen were garden, dam, beach, construction and agriculture areas. A standard method was used for the sample preparation using HotBlockTM system. The highest arsenic concentrated found in the construction area (32.24 ± 0.02 mg/kg) and followed by agriculture (31.55 ± 0.03 mg/kg), garden (19.17 ± 0.02 mg/kg), dam (17.12 ± 0.01 mg/kg) and beach (1.73 ± 0.01 mg/kg).

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Recovery Of Lignin Peroxidase From Amauroderma Rugosum Using Aqueous Two-Phase System / Zeinabsadat Masoudian, Zeinabsadat Masoudian Jan 2014

Recovery Of Lignin Peroxidase From Amauroderma Rugosum Using Aqueous Two-Phase System / Zeinabsadat Masoudian, Zeinabsadat Masoudian

Student Works (2010-2019)

A very important challenge in industrial biotechnology is development of an efficient downstream method for enzyme purification and separation due to the growing market of enzyme in biotechnology. Within the scope of this study, aqueous two-phase system based on imidazolium ionic liquid as an efficient downstream processing method was evaluated for primary purification of lignin peroxidase. The white-rot fungi Amauroderma rugosum is capable to produce lignin peroxidase as one of the ligninolytic enzymes. Lignin peroxidase (LiP) is an extracellular hem protein enzyme which is able to degrade lignin or lignin related aromatic compounds. The fungus cultivation in liquid media comprised …

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Quantification And Bioremediation Of Landfill Methane / Siva Shangari A/P Govindan, Siva Shangari Govindan Jan 2014

Quantification And Bioremediation Of Landfill Methane / Siva Shangari A/P Govindan, Siva Shangari Govindan

Student Works (2010-2019)

Methane (CH4) a potent greenhouse gas (GHG), has more than doubled in past decades and continues to rise. Historically, landfills have been the largest source of anthropogenic CH4 emission from the waste sector with 6,875 million metric tonnes of CO2–eq in year 2010. Therefore, it is important to quantify CH4 emissions from landfills to evaluate measures for reduction of GHG emission which contributes to global warming and climate change. At present, CH4 emission rates from landfills have been estimated using mathematical and empirical models and among them, the first-order-decay (FOD) models are often credited for its estimation. The objective of …

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Stearic-Oleic Acid Nanocarriers For Cream Formulation / Woo Juin Onn, Juin Onn Woo Jan 2014

Stearic-Oleic Acid Nanocarriers For Cream Formulation / Woo Juin Onn, Juin Onn Woo

Student Works (2010-2019)

Lipid nanoparticles are colloidal carrier systems that have extensively been investigated for controlled drug delivery, cosmetic and pharmaceutical applications. In this work, a series of stearic-oleic acid nanoparticles (SON) with different oleic acid compositions were successfully prepared by melt-emulsification combined with ultrasonication method. The SONs prepared have average particle size range from 200 nm to 250 nm depends on the oleic acid concentration in the mixture. TEM micrographs showed that high oleic acid compositions in SON induced the formation of elongated spherical particles. Encapsulation efficiency of SONs increased from 50% to 70% for both salicylic acid and lidocaine as increasing …

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Proteomic-Based Profiling Of The Leaf Extracts Of Ficus Deltoidea / Amy Tan Bee Bee, Amy Bee Bee Tan Jan 2014

Proteomic-Based Profiling Of The Leaf Extracts Of Ficus Deltoidea / Amy Tan Bee Bee, Amy Bee Bee Tan

Student Works (2010-2019)

Ficus deltoidea is one of the well-known herbs in Malay traditional medicine. This plant is commonly known as Mas Cotek in Malaysia. According to traditional medicinal practitioners, the decoction of the plant is able to prevent and cure various ailments. Recent pharmacological studies suggested that the aqueous extract contains pharmacologically active constituents that support the traditional use of this plant. The aim of this study is to investigate and compare the protein present in F. deltoidea var. angustifolia (SL), F. deltoidea var. trengganuensis (ML) and F. deltoidea var. kunstleri (BL) leaves aqueous extract using proteomic techniques. In sample preparation, protein …

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Cultivation Of Flammulina Velutipes (Golden Needle Mushroom/Enokitake) On Various Agroresidues / Nooraishah Binti Harith, Nooraishah Harith Jan 2014

Cultivation Of Flammulina Velutipes (Golden Needle Mushroom/Enokitake) On Various Agroresidues / Nooraishah Binti Harith, Nooraishah Harith

Student Works (2010-2019)

Sawdust and rice bran are common commercially used fruiting substrate components for the cultivation of Flammulina velutipes, or known as ‘golden needle mushroom’ in Malaysia. Due to the declining of sawdust supply, and the abundance of lignocellulosic agroresidues in Malaysia, hence, this study was carried out to investigate the possibility of using palm oil wastes; such as empty fruit bunches (EFB), palm pressed fiber (PPF), and paddy straw (PS) from rice plantation, as base carbon-sources in fruiting substrate used as either singular or in combination with different agroresidues. The percentage of rice bran (RB) and spent yeast (SY) used as …

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Differential Expression Of Putative Clotting Protein Gene In Vibrio Parahaemolyticus Challenged Giant Fresh-Water Prawn, Macrobrachium Rosenbergii / Nazanin Ashgari Ziba, Nazanin Ashgari Ziba Jan 2014

Differential Expression Of Putative Clotting Protein Gene In Vibrio Parahaemolyticus Challenged Giant Fresh-Water Prawn, Macrobrachium Rosenbergii / Nazanin Ashgari Ziba, Nazanin Ashgari Ziba

Student Works (2010-2019)

The growth of the freshwater prawn industry has not reached its great heights compared to the marine shrimps because of agriculturists’ innate fear of disease that will hamper the growth of the industry. High concentrations of infectious microorganisms (yeast, viruses and bacteria) in crustaceans during hot and cool seasons have resulted in a huge decline in prawn farming. Vibriosis, early mortality syndrome (EMS) and gastroenteritis due to zoonotic outbreaks have been a major threat to the rapid expanding production of freshwater prawns. The innate immune defense which leads to a lot of possible solutions needs to be thoroughly investigated for …

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Heavy Metal Immobilization Of Contaminated Soil By Waste Amendments / Mehrnaz Ashrafi, Mehrnaz Ashrafi Jan 2014

Heavy Metal Immobilization Of Contaminated Soil By Waste Amendments / Mehrnaz Ashrafi, Mehrnaz Ashrafi

Student Works (2010-2019)

Heavy metal-contaminated soil is one of the major environmental pollution issues all over the world. In this study four low-cost amendments, namely eggshell (inorganic), banana stem, potato peel and coconut husk (organic) were added to a slightly alkaline soil for the purpose of in situ immobilization of Pb, Cd, Zn and Cu, thus to modify their potential environmental impacts. The artificially metal-contaminated soil was treated with 5% inorganic amendment or 10% organic amendment for a period of 12 weeks. To simulate the rainfall conditions, a metal leaching experiment was designed and the total concentrations of the metals in the leachates …

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Analysis Of Total Mercury And Methyl Mercury In Marine Water And Fresh Water Fish Species / Nazirah Binti Ariffin, Nazirah Ariffin Jan 2014

Analysis Of Total Mercury And Methyl Mercury In Marine Water And Fresh Water Fish Species / Nazirah Binti Ariffin, Nazirah Ariffin

Student Works (2010-2019)

Total mercury and Methyl mercury analysis done by using Cold Vapor Atomic Absorption Spectrometer and Gas Chromatography Cold Vapor Atomic Fluorescence Spectrometer with limit of quantification of 10 ng/g and 0.64 ng/g. Certified reference material and laboratory control spike for total mercury meets a good recovery in average of 98% and 86% and for methyl mercury certified reference material and laboratory control spike of 99% and 97%. Total and Methyl mercury in fresh and marine water fish is species purchased from supermarket in Malaysia was determined. Marine water fish have average of total and methyl mercury of 107 ug/kg and …

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A Comparative Study Of Small Mammal Diversity Of Oil Palm Plantation And Nearby Forest / Muhammad Rasul Bin Abdullah Halim, Muhammad Rasul Abdullah Halim Jan 2014

A Comparative Study Of Small Mammal Diversity Of Oil Palm Plantation And Nearby Forest / Muhammad Rasul Bin Abdullah Halim, Muhammad Rasul Abdullah Halim

Student Works (2010-2019)

Large areas of tropical forests around the world were critically converted into agricultural areas especially oil palm plantation and for other human activities. Malaysia is one of the leaders in oil palm production and conversion of natural ecosystems into agricultural area gives an impact to the local biodiversity. This study aims to compare the diversity and abundance of small mammal species in two different habitats; forested habitat and oil palm plantation in Pahang, Malaysia. The study also intends to investigate the effects of forest edge distances (i.e. adjacent, intermediate, and interior forests) and various ages of oil palm plantation (i.e. …

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