Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"colorimetry"”.
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Determination of oxygenation rates in pork, beef, and lamb by Munsell and reflectance colorimetry
Thesis (M.S.)--Michigan State University. Dept. of Food Science, 1963
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Enhancing the soft proofing paradigm
… We present a workflow that extends traditional colorimetry beyond simple colour appearance prediction to a higher dimensional representation, which includes gloss. The intention is to provide a full goniometric simulation of the spatial distribution of light reflected by a print based upon data …
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Protein quality and digestibility of whole wheat as affected by drum-drying and single screw extrusion processing
… acid composition, available lysine analysis, colorimetry (Hunter L, a, b color values), and Differential Scanning Calorimetry were also conducted to investigate the effects of thermal processing on protein quality. Both thermal processes significantly increased protein digestibility while …
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Raman spectroscopy and diffuse reflectance spectroscopy for diagnosis of human cancer and acanthosis nigricans
… of diffuse reflectance spectroscopy and colorimetry on a skin disease, acanthosis nigricans in vivo. The aim is to quantify and characterize the skin color change associated with acanthosis nigricans skin disease in insulin-resistant obese individuals. We observe both the instruments can …
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Microemulsions containing centella asiatica extract as antioxidant and anti-acetylcholinesterase agent
… thermal behaviour by differential scanning colorimetry (DSC), and morphology and particle size by atomic force microscopy (AFM). The ME formulations were also tested for antioxidant activity by DPPH, ABTS, and FRAP assays, anti-acetylcholinesterase activity, in-vitro drug release, and …
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Automated techniques for surface coating deterioration studies
… cabinet have been used, in conjunction with colorimetry and infrared spectroscopy, to investigate the reaction between nitric oxide and various polymer based surface coatings. These were, a series of poly (vinyl chloride) coatings and aselection of commercial powder coatings. The nature and …
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Elevated-Temperature Oxidative Curing, Friction and Wear of Polyphenylene Sulfide (PPS) and its Composites
… fiber on its performance. In this study, thermal colorimetry was used to describe the influence of processing parameters on PPS morphology due to its oxidative curing reaction. Then a set of PPS composites with different weight fractions of PTFE, short carbon fiber, and graphite were obtained by …
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Electrochemical Pretreatment for Microfiltration of Surface Water: Mechanisms of Fouling and Its Control
… electron microscopy, light scattering, and colorimetry. Fouling of a commercial polymeric MF membrane following electrocoagulation was found to (1) be lower at pH 6.4 compared with 7.5, (2) decrease only up to an intermediate aluminum dosage, and (3) exacerbate with increasing transmembrane …
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Developing a spectroscopy-based high throughput assay for anthocyanin content in corn
… industries. In this study, tristimulus colorimetry and NIR spectroscopy were explored as a means of detecting and estimating anthocyanins in whole corn kernels and in ground corn. Results of the study showed that L*a*b* measurements were not useful for predicting TAC of whole corn …
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Two-scale modeling of transport mechanisms and quality changes during frying of foods
… Kinetics equation for color change obtained from colorimetry experiments was coupled with simulations during post-processing to predict the color (L, a, b) as a function of frying time for chicken nuggets. Lightness value was around 30 for frying at 175°C. Color was more yellow for lower frying …
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Portable colorimetric sensor array technology
U of I Only Restriction Lifted for Item 89476 on 2017-09-30T09:15:24Z.
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Die stabiliteit van parasetamol in vaste doseringsvorme
… ultraviolet spectrophotometry and colorimetry. A colorimetric-ultraviolet spectraphotometric method was developed and employed in the stability study. Seven tablet formulae were prepared and together with the two registered formulae subjected to physicopharmaceutical evaluation. The …
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Design and characterization of colorimetric plasmonic nanostructures for imaging and sensing
Increasing demand for early disease diagnostic techniques has attracted huge interest in plasmon-based optical sensors, which can detect small concentrations of chemical and bio-analytes that are not detectable by the conventional analytic optical tools. Advances in nanofabrication techniques have …
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Digital Microfluidics for the Detection of Inorganic Ions in Aerosols
… explosives or other experiments based on colorimetry.</p>
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Estimation of periodate by oxindolamine
<p>The carbohydrates play a vital role in the chemistry of the life processes. As man’s study of these processes, both fundamentally and in applied areas such as medicine, becomes ever more intensive, the limitations of our analytical procedures become ever more serious. While there are innumerable …
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Absorption and fluorescence spectroscopic analysis using compact, linear variable filter based, detection platforms
Spectroscopic analysis is an integral part of biological and chemical sensing. However, most spectroscopic equipment is relegated to laboratories. Compact and portable alternatives to conventional spectroscopic tools allow for testing outside of laboratory settings. This is achieved by making the …
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The code is not coloured: blackboxing colour, light, graphic arts and modernity
Do we need a philosophy of colour technology? Automation of reproduction technology will relegate graphic design to the ranking of visual art, a fate that crafts such as weaving, ceramics and glass have suffered. The twentieth century saw the demise of specialist fields such as drafting, woodcut, …
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Development of standardized dry roasting procedures for Virginia type peanuts
Peanuts are grown around the world and in United States where most peanuts are consumed after roasting. Peanuts are roasted to a specified color on L*a*b* scale as it is correlated with quality and acceptability. Two batches of Virginia type peanuts were acquired, one normal and other a high oleic …
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Fabrication of a colorimetric paper-based microfluidic sensor for residual poly-dadmac detection in water treatment
Submitted in fulfilment of the requirements for the Degree of Master of Applied Sciences in Chemistry, Durban University of Technology, Durban, South Africa, 2019.
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