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2011

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Articles 14281 - 14310 of 16817

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Menu-Labeling Laws: A Move From Local To National Regulation, Christine Cusick Jan 2011

Menu-Labeling Laws: A Move From Local To National Regulation, Christine Cusick

Santa Clara Law Review

No abstract provided.

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Flowering Phenology Change And Climate Warming In Southwestern Ohio, Ryan Mcewan, Robert J. Brecha, Donald R. Geiger, Grace P. John Jan 2011

Flowering Phenology Change And Climate Warming In Southwestern Ohio, Ryan Mcewan, Robert J. Brecha, Donald R. Geiger, Grace P. John

Biology Faculty Publications

Global surface temperature has increased markedly over the last 100 years. This increase has a variety of implications for human societies, and for ecological systems. One of the most obvious ways ecosystems are affected by global climate change is through alteration of organisms’ developmental timing (phenology). We used annual botanical surveys that documented the first flowering for an array of species from 1976 to 2003 to examine the potential implications of climate change for plant development. The overall trend for these species was a progressively earlier flowering time. The two earliest flowering taxa (Galanthus and Crocus) also exhibited the strongest …

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The Last Shall Be First: Human Potential In Genetic And Theological Perspectives, M. Therese Lysaught Jan 2011

The Last Shall Be First: Human Potential In Genetic And Theological Perspectives, M. Therese Lysaught

Theology Faculty Research and Publications

The notion of “human potential” provides a fruitful window through which to explore the competing conceptual frameworks of contemporary genetics and Christianity. The contemporary cultural frame of genetics conceives of human potential in a broadly positive manner: the source of personal and societal flourishing is located within individual bodies, waiting to be identified and unleashed by genetic science and medicine for the good of persons and society. In the Judeo-Christian narrative, human individual, biological potential is far less relevant—and, in fact, may be construed as an impediment to the achievement of personal and social flourishing. Implications for the dialogue between …

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The Heirs Of The Enochic Lore: ‘Men Of Faith’ In 2 Enoch 35:2 And Sefer Hekhalot 48d:10, Andrei Orlov Jan 2011

The Heirs Of The Enochic Lore: ‘Men Of Faith’ In 2 Enoch 35:2 And Sefer Hekhalot 48d:10, Andrei Orlov

Theology Faculty Research and Publications

No abstract provided.

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Community: To What End?, Stephen D. Long Jan 2011

Community: To What End?, Stephen D. Long

Theology Faculty Research and Publications

No abstract provided.

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The Effect Of Varying Levels Of Reading Delimitations On The Ability Of Students With Disruptive Behavior Disorders Admitted To A Residential Treatment Center To Demonstrate Language-Based Pro-Social Behavior Replacement Skills, Tanya D. Wright Jan 2011

The Effect Of Varying Levels Of Reading Delimitations On The Ability Of Students With Disruptive Behavior Disorders Admitted To A Residential Treatment Center To Demonstrate Language-Based Pro-Social Behavior Replacement Skills, Tanya D. Wright

Student Work

Group 1 students (n = 18) with Disruptive Behavior Disorders and co-occurring reading delimitations with measured reading comprehension scores greater than one standard deviation below the mean, pretest beginning compared to posttest ending 12-week behavioral treatment Core Behavior Occurrence measures were all observed in the direction of lower posttest mean scores and student core behavior improvement with eight of the 11 Core Behavior Occurrence measures (73%) found to be significantly different. Group 2 students ( n = 22) with Disruptive Behavior Disorders and co-occurring reading delimitations with measured reading comprehension scores equal to but not more than one standard …

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Studies On Microfungal Diversity Of King George Island And Analysis Of Hydrolase Enzymes Of Selected Species / Abiramy Krishnan @ Ramasamy, Abiramy Krishnan @ Ramasamy Jan 2011

Studies On Microfungal Diversity Of King George Island And Analysis Of Hydrolase Enzymes Of Selected Species / Abiramy Krishnan @ Ramasamy, Abiramy Krishnan @ Ramasamy

Student Works (2010-2019)

Antarctica hosts a wide range of psychrophilic and psychrotolerant microbes, and thus is a prime choice for studies of the production of cold-functioning enzymes and other metabolites. However, the occurrence and importance of investment in such activities has received relatively limited attention in studies of Antarctic soil microbiota. In order to ex-amine extracellular enzyme production in this chronically low temperature environment, fungi were isolated from ornithogenic, pristine and human-impacted soils collected from the Fildes Peninsula, King George Island, Antarctica during the austral summer in February 2007. Forty-one fungal taxa were isolated from soil samples, from which 28 isolates of psychrophilic …

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Analysis Of Culturable Bacteria From Soil Of Three Sites On Anchorage Island, Antarctic Peninsula, Karimian Maryam Jan 2011

Analysis Of Culturable Bacteria From Soil Of Three Sites On Anchorage Island, Antarctic Peninsula, Karimian Maryam

Student Works (2010-2019)

Since soil-borne bacteria represent the world's greatest source of biological diversity, the diversity of culturable bacteria associated with soil from three different regions of the Anchorage Island on the Antarctic Peninsula was investigated. Soil samples analysed included Sandy coarse soil (AI1), Black & fine soil (AI2) and High nutrient (AI3). A total of 196 bacteria were isolated under aerobic conditions at 4°C using Nutrient agar as medium. The isolates were grouped using morphology and amplified rRNA gene restriction analysis fingerprinting and identified by partial sequencing of 16S rRNA gene. Out of 14 different RFLP patterns and different morphologies that were …

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In Vitro Production Of Caprine Embryos Through Intracytoplasmic Sperm Injection (Icsi) Technique / Kong Soh Chan, Sow Chan Kong Jan 2011

In Vitro Production Of Caprine Embryos Through Intracytoplasmic Sperm Injection (Icsi) Technique / Kong Soh Chan, Sow Chan Kong

Student Works (2010-2019)

No abstract provided.

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A Study On Environmental Aspects And Associated Impacts Of Selected Farms Management Practices / Nur Ezira Ramli, Ramli Nur Ezira Jan 2011

A Study On Environmental Aspects And Associated Impacts Of Selected Farms Management Practices / Nur Ezira Ramli, Ramli Nur Ezira

Student Works (2010-2019)

Livestock farming contributes the production of food at the expense of environmental degradation on air, water and soil/land. The qualitative study, an initial environmental review (IER) was conducted to identify overall farm operation and management practice via various environmental aspects and associated impacts. The study has identified activities in selected farms with significant impacts on environment are transportation, resource consumption, manure and wastewater management. As observed, two farms have initiated a sustainable and environmentally livestock farming practice by taking consideration on natural resources consumption, animal, waste and impacts to nature. An increase of livestock population with time, a periodically review …

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Studies On Chitosan Based Films Obtained By Blending With Agar And Poly Vinyl Alcohol / Esam A. Elhefian, Esam A. Elhefian Jan 2011

Studies On Chitosan Based Films Obtained By Blending With Agar And Poly Vinyl Alcohol / Esam A. Elhefian, Esam A. Elhefian

Student Works (2010-2019)

This work deals with blends of chitosan (CS) with agar (AG) and/or polyvinyl alcohol (PVA) at different proportions in solution and solid film forms with the aim to develop biopolymer blends with established rheological, mechanical, thermal, swelling and surface properties. In the first part of this work, a number of blended solutions of (CS/AG), (CS/PVA) and (CS/AG/PVA) at different proportions (considering chitosan as the major component) were prepared. The effects of temperature, shear rate, shearing time and storage time on the rheological properties of the three blended solutions with respect to the apparent viscosity and the shear stress were investigated …

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Landfill Methane Oxidation Using Biocover Under Laboratory Conditions / Siti Aishah Kamarul Baharain, Kamarul Baharain Siti Aishah Jan 2011

Landfill Methane Oxidation Using Biocover Under Laboratory Conditions / Siti Aishah Kamarul Baharain, Kamarul Baharain Siti Aishah

Student Works (2010-2019)

Generation of waste continues to increase in response to rapid population growth. An estimated 10 million tonnes of total waste was produced in 2008 in Malaysia which was sent to 260 landfills. Malaysian landfills produce 1.3-7.5 L/kg/year of methane gas. Landfill gas consists mainly of methane (55%). CH4 is recognized as the primary global warming contributor with CH4 being 25 times more infrared absorptive capacity than CO2. Using “Biocover” at landfills is one option for methane oxidation. Objective of this study is to analyze the physical and chemical characteristic of the Biocover material (garden waste compost and black soil) in …

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Synthesis Of High Surface Area Supported Copper Based-Bimetallic Catalysts For Hydrogenation Of Fatty Alcohols To Fatty Amines / Normazuin Abdul Rahman, Abdul Rahman Normazuin Jan 2011

Synthesis Of High Surface Area Supported Copper Based-Bimetallic Catalysts For Hydrogenation Of Fatty Alcohols To Fatty Amines / Normazuin Abdul Rahman, Abdul Rahman Normazuin

Student Works (2010-2019)

Over the past few decades it has been observed that copper (Cu) ‘supported on’ or ‘incorporated into’ solid matrices are widely used as catalysts for various types of reactions. It was reported that the high activity of supported Cu catalyst is generated by properties of the clusters and nanoparticles including high dispersion and uniform distribution of nanoparticle Cu on the support material. All these factors exert a direct effect on the formation of active surface of Cu and their catalytic properties accordingly. In this study, Cu based catalysts supported on silica, SiO2 were prepared by incipient wetness impregnation of SiO2 …

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The Production Of Antioxidants Via Solid Substrate Fermentation Using Lentinus Squarrosulus (Mont.) / Siti Marjiana Ismail, Ismail Siti Marjiana Jan 2011

The Production Of Antioxidants Via Solid Substrate Fermentation Using Lentinus Squarrosulus (Mont.) / Siti Marjiana Ismail, Ismail Siti Marjiana

Student Works (2010-2019)

In this study, antioxidants extracted, using methanol and dichloromethane, from Lentinus squarrosulus (Mont.) mycelium grown on rice, maize and soya bean supplemented with nitrogen sources (malt extract, yeast extract and peptone) at various concentrations were compared with mycelium grown in liquid Glucose-Yeast-Malt-peptone (GYMP). The antioxidant capacity of the extracts were then analyzed using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging abilities and inhibition of lipid peroxidation. The total phenol content (TPC) of the extracts was also measured using the Folin–Ciocalteu method. It was found that antioxidants from L. squarrosulus grown on maize supplemented with 0.04% peptone extracted with methanol gave the best DPPH …

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Study Of Microrna In Relation To Salt Tolerance In Banana (Musa Acuminata Ssp. Malaccensis) / Seyed Hossein Beheshti, Seyed Hossein Beheshti Jan 2011

Study Of Microrna In Relation To Salt Tolerance In Banana (Musa Acuminata Ssp. Malaccensis) / Seyed Hossein Beheshti, Seyed Hossein Beheshti

Student Works (2010-2019)

Salinity is a major abiotic stress affecting crop productivity worldwide and results in millions of dollars in lost yield and damage to infrastructure. The purpose of this study was to identify microRNAs related to NaCl stress in Musa acuminata ssp. malaccensis (Ridl.). Sterilization techniques were employed to reduce contamination of embryos initiated from seeds. The germination rate of in vitro zygotic embryo culture was observed to increase to 92 % after soaking of the seeds in water (for periods of 2 or 3 days) compared to 72 % germination when no water treatment was used. Shoot induction and multiplications were …

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Studing The Effects Of A Combined Adiponectin-Metformin On Glucose And Lipids Levels With Anti-Ulcerogenic Activity Of Adiponectin Against Ethanol Induced Gastric Mucosal Injury In Rat Blood / Atieh Abdollahi Fard, Atieh Abdollahi Fard Jan 2011

Studing The Effects Of A Combined Adiponectin-Metformin On Glucose And Lipids Levels With Anti-Ulcerogenic Activity Of Adiponectin Against Ethanol Induced Gastric Mucosal Injury In Rat Blood / Atieh Abdollahi Fard, Atieh Abdollahi Fard

Student Works (2010-2019)

Adiponectin is a protein hormone secreted entirely by abdominal fat tissue. It has anti-diabetic, antiatherogenic and anti-inflammatory effects. The present study was performed to evaluate the effects of a combination of adiponectin with metformin on blood glucose, TG (triglyceride), CHOL (Total cholesterol), LDL (Low density lipoprotein) and HDL (High density lipoprotein) in mice and also to evaluate the anti-ulcerogenic activity of adiponectin against ethanol induced gastric mucosal injury in rats. Three groups of female ICR healthy mice were gavaged with 1% volume / body weight high fat-sucrose. Metformin in a dosage of 250mg/kg was added to the feed and a …

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Phytochemical Studies And The Bioactivities Of Three Meliaceae Species / Ibrahim A. Najmuldeen, Ibrahim A. Najmuldeen Jan 2011

Phytochemical Studies And The Bioactivities Of Three Meliaceae Species / Ibrahim A. Najmuldeen, Ibrahim A. Najmuldeen

Student Works (2010-2019)

This thesis describes phytochemical studies on three species of Malaysian plants, Chisocheton ceramicus, Chisocheton tomentosus, and Dysoxylum macrocarpum from Meliaceae family, in which the latter two species have not been found in the literature. The present work on these plants involves extraction, isolation and purification of compounds by using column chromatography followed by preparative TLC or RPHPLC and structural elucidation, which has been done through several spectroscopic methods, notably UV, IR, MS (HRMS, GCMS, and LCMS), 1D, 2D-NMR (1H NMR, 13CNMR, COSY, DEPT, HMQC, HMBC, NOESY, and single crystal X-ray diffraction analysis. This work has resulted twenty new compounds including …

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Estimation Of Goat Foetal Age During Pregnancy Using Transrectal And Transabdominal Probes In Ultrasound Scanning / Mohd. Nizam Abdul Rashid, Abdul Rashid Mohd. Nizam Jan 2011

Estimation Of Goat Foetal Age During Pregnancy Using Transrectal And Transabdominal Probes In Ultrasound Scanning / Mohd. Nizam Abdul Rashid, Abdul Rashid Mohd. Nizam

Student Works (2010-2019)

Pregnancy diagnosis plays important role in modern goat management, especially when technologies such as artificial insemination and embryo transfer are employed in goat. Accurate pregnancy diagnosis may provide essential information for effective herd management in farm animals (Doize et al., 1997). This study was carried out with the following objectives: a) to determine accuracy of pregnancy prediction by using ultrasound scanner, b) to determine the criteria for single and twin pregnancies using ultrasound scanner, c) to predict the gestation age based on ultrasound scanning using constructed regression equation, d) to compare the efficacy of two different probes on pregnancy diagnosis …

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Effects Of Different Equilibration Duration, Vapour Exposure Temperature And Vapour Exposure Duration On The Sperm Freezability Of Thai Mahseer (Tor Tambroides) / Shahrulzaman Shaharuddin, Shaharuddin Shahrulzaman Jan 2011

Effects Of Different Equilibration Duration, Vapour Exposure Temperature And Vapour Exposure Duration On The Sperm Freezability Of Thai Mahseer (Tor Tambroides) / Shahrulzaman Shaharuddin, Shaharuddin Shahrulzaman

Student Works (2010-2019)

The experiment was carried out to determine the effects of equilibration duration, vapour exposure temperature and vapour exposure duration in sperm cryopreservation protocol for Tor tambroides fish using modified Fish Ringer Extender (FRE); and subsequently used in experiment to develop optimal combination of equilibration duration, vapour exposure temperature and vapour exposure duration. Also, an experiment was performed to compare the frozen-thawed sperm characteristics between low temperature incubator and normal refrigerator during cryopreservation process; and the results have been utilised for subsequent final experiment in attempt of the transfer of technology from laboratory to the field condition for the sperm cryopreservation …

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Differentiation Of Two Taxa Of Caulerpa Based On Tufa Marker / Maryam Dalili Shofaei, Maryam Dalili Shofaei Jan 2011

Differentiation Of Two Taxa Of Caulerpa Based On Tufa Marker / Maryam Dalili Shofaei, Maryam Dalili Shofaei

Student Works (2010-2019)

The Caulerpa is an economical important genus among chlorophyta, which was initially described by Lamouroux in 1809, since then some 70 species of Caulerpa have been identified. The Caulerpa species have complex morphology that provides some characters that can be used in taxonomy, but extensive plasticity makes species boundaries difficult to be defined. With advancement in the field of molecular biology, it provides some alternatives for better understanding of taxonomy. In this study, PCRbased molecular techniques were used in an attempt to differentiate two taxa of Caulerpa based on tufA marker. In this research work, specimens were collected from Pulau …

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Screening Selected Actinobacteria For Antifungal Activity / Ezzatul Syahadah Zainordin, Zainordin Ezzatul Syahadah Jan 2011

Screening Selected Actinobacteria For Antifungal Activity / Ezzatul Syahadah Zainordin, Zainordin Ezzatul Syahadah

Student Works (2010-2019)

Actinobacteria are well known for their production of an extensive array of chemically diverse and medically important secondary metabolites. Fifty two strains of actinobacteria used in this study were divided into 20 colour groups based on their aerial and substrate mycelium colour as well as diffusible pigment production on Yeast Extract Malt Extract (ISP) medium. Antifungal activity was determined against Candida albicans, Candida parapsilosis, Fusarium oxysporum, Ganoderma boninense, Schizosaccharomyces pombe and Saccharomyces cerevisiae by the agar plug-diffusion method. Ten of the fifty two actinobacterial strains showed strong antifungal activity. Two strains (MA04119 and RHRS) were active against S. pombe, four …

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16s Rdna Clone Library Analysis Of Soil Bacteria From Three Different Sites In Peninsula Antarctica / Tahereh Yazdani Nia, Tahereh Yazdani Nia Jan 2011

16s Rdna Clone Library Analysis Of Soil Bacteria From Three Different Sites In Peninsula Antarctica / Tahereh Yazdani Nia, Tahereh Yazdani Nia

Student Works (2010-2019)

Soil bacterial diversity from three locations on maritime Antarctica was analyzed using 16S rRNA gene clone library construction and restriction fragment length polymorphism (RFLP) fingerprinting. Soil samples were from near Rothera Research Station in Rothera Point from Adelaide Island, from Viking Valley on north-eastern side of Mars Glacier from Alexander Island, and from Léonie Island on northern Marguerite Bay, Antarctic Peninsula. Five hundred and forty-eight clones were screened by RFLP and representatives of each phylotype were sequenced for identification. The phylotype sequences showed close relationship (i.e. ≥95% similarity) with bacterial divisions Acidobacteria, Actinobacteria, Bacteroidetes, Chloroflexi, Cyanobacteria, Firmicutes, Gemmatimonadetes, Proteobacteria, Verrucomicrobia …

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Relationships Amongst Chlorella Isolates From The Tropical, Temperate And Antarctic Regions Based On Morphological, Biochemical And Molecular Studies / Shamala Marimuthu, Shamala Marimuthu Jan 2011

Relationships Amongst Chlorella Isolates From The Tropical, Temperate And Antarctic Regions Based On Morphological, Biochemical And Molecular Studies / Shamala Marimuthu, Shamala Marimuthu

Student Works (2010-2019)

Algae from the genus Chlorella are widely distributed on earth, including the Polar Regions. The alga is a model organism for physiology and biochemistry experiments as well as an important organism for biotechnological exploitation. The major objective of this study was to unravel the relationship amongst Chlorella isolates from the Antarctic, sub-Antarctic, tropical and temperate regions based on 18S rDNA sequences as well as morphological and biochemical (fatty acid profiles and pigment composition) features. Eleven isolates of Chlorella, consisting of two Antarctic isolates, one sub–Antarctic isolate, seven tropical isolates and one temperate isolate from the University of Malaya Algae Culture …

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Synthesis Of Bioactive Cyclohexenyl Chalcones And Flavonoid Derivatives / Chee Chin Fei, Chin Fei Chee Jan 2011

Synthesis Of Bioactive Cyclohexenyl Chalcones And Flavonoid Derivatives / Chee Chin Fei, Chin Fei Chee

Student Works (2010-2019)

Flavonoids are a class of natural products that are well known to possess a wide range of pharmacological properties. Due to their recent discovery in modulating muscarinic receptor activity and its inhibitory effect against dengue-2 virus NS3 protease, flavonoids are idea candidates for drug development. This dissertation describes the syntheses of several flavones and some Diels-Alder adducts derived from chalcones. A modified Baker-Venkataraman method has been developed where flavones were prepared in a one-pot procedure from the corresponding 2-hydroxyacetophenones and acyl chlorides under different conditions. When 2-hydroxyacetophenone is heated with a stoichiometric amount of acyl chloride, either in a DBU/pyridine …

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Pursuit Of Excellence By Muslim Scientists With A Special Reference To Ibn Sina / Mohd Hishamuddin A Hamid, A Hamid Mohd Hishamuddin Jan 2011

Pursuit Of Excellence By Muslim Scientists With A Special Reference To Ibn Sina / Mohd Hishamuddin A Hamid, A Hamid Mohd Hishamuddin

Student Works (2010-2019)

This dissertation has the objective of studying the pursuit of excellence by Muslim Scientists during the height of Islamic Civilization with a special reference to Ibn Sina. It is hope that through this study we can obtain some information or guidelines which can be used and emulated by present day scientists to achieve the excellence that the Muslims Scientists of that time had attained. Why do we need to achieve that level of excellence? The present day predicament of the Muslim Ummah where we are ostracized, discriminated and looked down upon by friends and foes alike. We have to redeem …

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Electrocatalysis Studies Related To [Fefe]-Hydrogenase / Woi Pei Meng, Pei Meng Woi Jan 2011

Electrocatalysis Studies Related To [Fefe]-Hydrogenase / Woi Pei Meng, Pei Meng Woi

Student Works (2010-2019)

This research is concerned with building structures related to the active site of [FeFe] hydrogenase, the H-cluster (a) within surface confined electropolymers (b) in proteins by chemical modification of ferredoxin centres and (c) as catalytic moieties on light harvesting nanoparticles. The study begins by laying out the synthesis of materials used in the studies detailed in this thesis. Components including the cubane cluster, the {2Fe-2S} sub-site centre and the synthesis of functionalised ligands for modification of electrode surfaces and proteins, as well as synthesis of key monomers which can be electropolymerised for electrode surface modification. An improved synthetic route to …

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Antioxidant Activity Of Pleurotus Species And Antidiabetic Activity Of Pleurotus Citrinopileatus (Singer) / Rushitha Sadasevevam, Rushitha Sadasevevam Jan 2011

Antioxidant Activity Of Pleurotus Species And Antidiabetic Activity Of Pleurotus Citrinopileatus (Singer) / Rushitha Sadasevevam, Rushitha Sadasevevam

Student Works (2010-2019)

The genus Pleurotus comprises some of the most popular edible mushrooms due to their favourable organoleptic and medicinal properties, vigorous growth and undemanding cultivation conditions. Pleurotus species contain a variety of secondary metabolites including various phenolic compounds which have been said to act as excellent antioxidants and possess antidiabetic activity. The antioxidant activity of mycelial extract of nine Pleurotus species and antidiabetic activity for Pleurotus citrinopileatus was investigated. The total phenolic content in mycelial extract of nine Pleurotus species was assayed by Folin-Ciocalteau’s method while antioxidant activity was determined by two different assays namely scavenging effect on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical …

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Construction And Expression Of Human Adiponectin In Prokaryotic And Eukaryotic Expression Systems And The Study Of Its Effect On Selected Blood Parameters And Expression Of Related Genes / Hussin Alwan Rothan Al-Maamuri, Hussin Alwan Rothan Al-Maamuri Jan 2011

Construction And Expression Of Human Adiponectin In Prokaryotic And Eukaryotic Expression Systems And The Study Of Its Effect On Selected Blood Parameters And Expression Of Related Genes / Hussin Alwan Rothan Al-Maamuri, Hussin Alwan Rothan Al-Maamuri

Student Works (2010-2019)

Adiponectin is one of the most bioactive substances secreted by adipose tissue which is involved in protection against metabolic syndrome, artherosclerosis and type II diabetes. Research into the use of adiponectin as a promising drug for metabolic syndromes requires production of this hormone in high quantities. This may be achieved using recombinant DNA technology, which would also allow the production of different molecular forms as well as providing greater input in terms of understanding its signalling pathway. This study was mainly targeted towards producing adiponectin hormone as a recombinant protein by P. pastoris (P-ADP) as a cheap and convenient eukaryotic …

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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 …

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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 …

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