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Showing 1 to 18 of 18 for “"Fourier transform infra-red spectroscopy"”.
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Structural Investigations of Nematode Anhydrobiotic and Rab11-FIP Proteins by Far-UV Circular Dichroism and Mid-IR Fourier Transform Infra-Red Spectroscopy
… hemoglobin, lysozyme and a-chymotrypsin by CD spectroscopy resulted in excellent agreement of estimated fractional composition with that observed by x-ray crystallography. CD spectroscopy was found to be very accurate for estimating a-helix and random coil content, but considerably less so for …
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Synthesis and characterization of tethered poly(n-isopropylacrylamide) for quantitative cell adhesion studies
… been characterized using X-ray photoelectron spectroscopy, time-of-flight secondary ion mass spectroscopy, Fourier transform infra-red spectroscopy, ellipsometry and contact angle measurements. Together all these studies proved that uniform, controlled and high molecular weight PNIPAAm brushes …
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Modern Pollen-Vegetation Relationships In Ghana, Tropical West Africa
… pollen traps. It also tests the ability of Fourier Transform Infra-red Spectroscopy (FTIR) to identify Poaceae pollen to below family level. Characteristic taxa from the forest-savannah mosaic landscape were Poaceae and Melastomataceae/Combretaceae, with these reaching 61% and 73% …
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Studies of the surface and bulk reactivity of calcium hydroxide
… to the atmosphere) samples were characterised by Fourier Transform Infra-Red Spectroscopy, Thermo-Gravimetric Analysis, Nitrogen Adsorption, Water Adsorption, Scanning Electron Microscopy and Microprobe Analysis. From this slight differences in the 'fresh' samples were found to be due to various …
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Supercapacitor electrode materials based on nanostructured conducting polymers and metal oxides
Supercapacitors are charge-storage devices. Compared to batteries, they have higher power density, more excellent reversibility and longer cycle life. Therefore, supercapacitors have played an increasingly important role in the fields of power source especially in automotive applications, such as …
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The adsorptive properties of oligomeric, non-ionic surfactants from aqueous solution
Surfactants from the 'Triton' range, manufactured by Rohm and Haas, Germany, were used to study the adsorptive behaviour of non-ionic surfactants (of the alkyl polyoxyethylene type) from aqueous solution onto mineral oxide surfaces. The oligomeric distributions of the surfactants were characterised …
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The analysis of organic matter in oil-shales
… These are: 1. Lithium aluminium hydride reduction. - This procedure is commonly used to remove pyrite from kerogens and it may also increase their solubility by reduction of labile functional groups. Although reduction of the kerogens was confirmed, increases in solubility were correlated …
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An Investigation Into The Mineral And Mechanical Properties Of The Canine Intervertebral Disc And Its Clinical Implications
… The process is complex and involves the transformation of collagen fibres, loss of proteoglycans and notochord cells and a reduction in water content; however, how these processes are linked to future disc herniation remains unknown. Most studies to date have focused on imaging changes …
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In vitro screening of Trametes versicolor and Acacia nilotica derivatives for antimalarial efficacy
… out using comparison of spectra generated with Fourier transform infra-red spectroscopy. To test drug efficiency, the parasites were exposed to the compounds for 48- and 72-hour incubations at trophozoite and ring stage. The specific doses for exposure were concentrations of 12.5 μg/ml, 25 …
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Establishing nanoscopic structure-function relationships in the working electrodes of dye-sensitized solar cells
… technology with niche applications as solar-powered windows. The performance of a DSSC is particularly susceptible to the dye sensitizer, which is adsorbed onto the surface of a wide-band-gap semiconductor such as TiO2, to form the working electrode. The nature by which such surfaces are …
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Structure-based theoretical characterisation of the redox-dependent titration behaviour of cytochrome bc1
Cytochrome bc1 is a coenzyme-Q-cytochrome-c-oxidoreductase that represents complex III of the mitochondrial respiratory chain. It spans the inner mitochondrial membrane and uses the free energy of electron transfer from coenzyme Q (CoQ) to cytochrome c to shift protons across the membrane. The …
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Strategies for Improving the Bacterial Biodegradation of PET
… contributing factor is that the temperature required for bacterial growth is significantly lower than the glass transition temperature of PET. To circumvent this limitation, various complementary techniques have been proposed in this project to enhance biodegradation of PET using Ideonella …
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Crystal morphology and surface reactivity studies of calcium hydroxide
… vapour adsorption , thermogravimetric analysis, Fourier-transform infra-red spectroscopy, ultra-violet spectroscopy and electron microscopy. The morphology of the samples varied from octahedral crystals to hexagonal prisms to sheets. The individual morphology depends on the conditions of …
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Ceramic nanostructures for block copolymers
… and phases, nanostructures with highly ordered and complex pore structures with a vast range of different symmetries can be produced; structures that are not attainable by more conventional processing techniques such as lithography. In this thesis, we have produced porous and relief ceramic …
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THE NATURE OF BOND FORMATION AND FAILURE IN WOOD-ADHESIVE SYSTEMS
… adhesives and wood have been investigated using Fourier transform infra-red spectroscopy (FTIR). This technique has aided the identification of changes in the phenolic content of wood (lignins and extractives) and also in the cellulose content. It appears that ortho- and para-substitutions of …
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The development of targeting nanosystems for the treatment of glioblastoma and neuroblastoma tumours
… atoms which enhance NP properties when compared to their monometallic NP counterparts. Therefore, the aim of this study was to develop gold NPs (AuNPs) and AuPtNPs, both conjugated to CTX for treatment in GB and NB cancer cells in vitro. This was achieved by synthesizing two novel CTX-NPs …
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Studies of structure cracking and fracture strength of E-glass fibres using acoustic emission.
… elevated temperature and friction both cause a reduction in strength, a decrease in Weibull modulus and an increase in the coefficient of variability. For example at 20 degrees C the maximum load carrying capacity of the strand in the absence of friction is l,040N and in the presence of friction …
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Interactions of Trace Metals with Plastic Production Pellets in the Marine Environment
… plastic particle. Specifically, the study compared virgin pellets sourced from a local moulding plant with those collected from local beaches and subjected to aging, attrition and deposition of extraneous material. Pellets collected from the coastline of Southwest England were mainly …