| Dr. Michira Immaculate Nyambura Publications |
| 1 | 9999 | SYNTHESIS AND CHARACTERIZATION OF GREEN TEA STABILIZED IRON NANOCATALYSTS FOR BRYMOTHYMOL BLUE (BTB) DEGRADATION
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| 2 | 9998 | Adsorption Of Atrazine Pesticide By Sediments And Soil Samples: Apparent Thermodynamic Properties
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| 3 | 9998 | Synthesis And Characterization Of Silver Nanoparticles Using Tea Extracts And Their Application In Nanobiosensors
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| 4 | 2014 | GREEN SYNTHESIS OF IRON NANOPARTICLES ON CHAMOMILE INBUILT TEMPLATES
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| 5 | 2014 | Polydisperse Low Diameter "Non-Toxic' Silver Nanoparticles Encapsulated By Rooibos Tea Templates
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| 6 | 2014 | SYNTHESIS AND CHARACTERIZATION OF GREEN TEA STABILIZED IRON NANOPARTICLES AND THEIR SYNERGISTIC EFFECT ON POLYANILINE
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| 7 | 2014 | Green Syntheis Of Silver Nanoparticles Using Eucalyptus Corymbia Leave Extract And Antimicrobial Applications
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| 8 | 2012 | Adsorption Of 2,4,5,6-tetra Chloroisophthalonitrile By Nairobi River Sediments: Adsorption Characteristics And Related Thermodynamic Data
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| 9 | 2011 | Synthesis, Characterization And Application Of Sulfonated Polyaniline In Construction Of A Biosensor For Diazinon
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A series of sulfonated polyaniline=derivatized polyaniline nanocomposites was chemically synthesized in the presence of anthracene and naphthalene sulfonic acids. UV-vis and FTIR results indicated the emergence of new bands at 420 and 700nm and1100cm-1 in their spectra, respectively, meaning the dopant/polymer intercalations involved electronic interactions between dopant/polymer sub-lattices. The electroactive
composites displayed moderately fast electrode kinetics. A composite-based biosensor for hydrogen peroxide reached a steady state current of 9.2 and 5.3 mA, and when fine-tuned for diazinon detection gave % inhibitions to be 41 and 81% for thepolyaniline and poly-o-methoxyaniline biosensors, respectively.
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| 10 | 2007 | Anthracene Sulfonic Acid-doped Polyanilines: Electrodynamics And Application As Amperometric Peroxide Biosensor
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Vertex epidural haematomas (VEDH) are rare and difficulties are encountered in diagnosis and management. This is a case report of a patient with a vertex epidural haematoma who presented with signs of severe head injury with upper limb decerebrate posture. We discuss the challenges of radiological investigation and neurosurgical management of VEDH. |
| 11 | 2007 | Electrochemical Synthesis And Characterization Of 1,2-Naphthaquinone-4-Sulfonic Acid Doped Polypyrrole
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Vertex epidural haematomas (VEDH) are rare and difficulties are encountered in diagnosis and management. This is a case report of a patient with a vertex epidural haematoma who presented with signs of severe head injury with upper limb decerebrate posture. We discuss the challenges of radiological investigation and neurosurgical management of VEDH. |
| 12 | 2007 | Synthesis, Characterisation Of Novel Polyaniline Nanomaterials And Applications In Amperometric Biosensors
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Summary: Anthracene sulfonic acid doped polyaniline nanomaterials were prepared through the chemical oxidative polymerisation process. Ammonium peroxydisulfate (APS) was employed as oxidant. Scanning electron microscopy (SEM) results show the resultant polyaniline (PANi) materials exhibited nanofibrillar morphology with diameter sizes less than 300 nm. Using the nanofibrillar PANI, amperometric biosensors for H2O2 and erythromycin were constructed through the drop-coating
technique. Anthracene sulfonic acid (ASA) doped PANi and the test enzymes horseradish peroxidase, (HRP), or cytochrome P450 3A4, (CYP4503A4) were mixed in phosphate buffer solution before drop coating onto the electrode. The resultant biosensors displayed typical Michaelis-Menten behaviour. The apparent Michaelis-
Menten constant obtained was 0.18-0.01 mM and 0.80-0.02 µM L-1 for the peroxide and erythromycin biosensor respectively. The sensitivity for the peroxide sensor was 3.3x10-3A .cm-2 mM-1, and the detection limit was found to be 1.2x10-2 mM respectively. Similarly, the sensitivity for the erythromycin sensor was
in the same order at 1.57x10-3 A . cm-2 mM-1 and detection limit was found to be 7.58x10-2 µM.
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| 13 | 2007 | Spectroelectrochemical Reactivities Of Novel Polyaniline Nanotube Pesticide Biosensors,
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Vertex epidural haematomas (VEDH) are rare and difficulties are encountered in diagnosis and management. This is a case report of a patient with a vertex epidural haematoma who presented with signs of severe head injury with upper limb decerebrate posture. We discuss the challenges of radiological investigation and neurosurgical management of VEDH. |
| 14 | 2007 | Electrocatalytic Sensor Applications Of Nanostructured Polypyrroles And Polythiophenes
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Vertex epidural haematomas (VEDH) are rare and difficulties are encountered in diagnosis and management. This is a case report of a patient with a vertex epidural haematoma who presented with signs of severe head injury with upper limb decerebrate posture. We discuss the challenges of radiological investigation and neurosurgical management of VEDH. |
| 15 | 2007 | Synthesis, Electrodynamics And Biosensor Applications Of Novel Sulphonated Polyaniline Nanocomposites
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The overall aim of this thesis was to prepare nanostructured more processable heteronuclear sulphonated polyanyline nanocomposites with electroconductive properties suitable for applications in biosensors. The sulphonated self-assembled polyaniline and derivatised polyaniline nanocomposites (SPAHs) were prepared by chemical oxidative polymerisation or electrical decomposition. The SPAHs prepared include those of polyaniline (PANi), poly-o-methoxyaniline (POMA) and poly-2.5 dimethoxyaniline (PDMA). Two types of sulphonic acids of heteronuclear aromatic hydrocarbons were used in the production of sulphonated SPAH composites. These were anthracene sulphonic acid (ASA) and naphthalene sulphonic acids (NSA) wich played both doping and surfactant roles.
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| 16 | 2007 | Electrocatalytic Sensor Applications Of Nanostructured Polypyrolles And Polythiophenes
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| 17 | 2007 | Electrochemical Synthesis And Characterization Of 1,2-Naphthaquinone-4-Sulfonic Acid Doped Polypyrrole
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| 18 | 2006 | Electrochemical Interrogation And Sensor Applications Of Nanostructured Polypyrolles
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Vertex epidural haematomas (VEDH) are rare and difficulties are encountered in diagnosis and management. This is a case report of a patient with a vertex epidural haematoma who presented with signs of severe head injury with upper limb decerebrate posture. We discuss the challenges of radiological investigation and neurosurgical management of VEDH. |
| 19 | 2000 | Trace Gas Emissions For Biomass Cookstoves In Kiambu And Bungoma Districts. (A Pilot Study)
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