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 22 for “"chemical tests"”.
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A spectroscopic study of paint
… These included visual microscopy, wet chemical tests, thin layer chromatography (TLC), infrared spectroscopy (IR), Raman spectroscopy and pyrolysis-gas chromatography (Py-OC). Attenuated total reflectance (ATR) IR spectroscopy provided non-destructive discrimination between the majority …
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Studies on the quality of ice cream
… summer 1979 and summer 1980. Bacteriological, chemical, physical and organoleptic tests were carried out on 50 samples of thirteen brands from the first sampling. A limited number of bacteriological and physical and chemical tests were carried out on twelve replicates of four brands in the …
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Relationship between decomposition level and induced solidification of peat based on laboratory investigation
… and filler are in alkaline state. The physico-chemical and mechanical properties of peat were identified according to British (BS 1377, 1990) and US (ASTM, 2000) standards. Chemical tests were adopted from previous researchers to identify the chemical properties. The mixtures of …
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Water Quality and Urbanization: a Multitemporal Study of the Pierson Creek Drainage Basin, Greene County, Missouri
… and places. The results of both biological and chemical tests of water quality were compared with urbanizatiaon upstream of each test site at the time of the tests. Three of the four biological indications of water quality yielded statistically significant degrees of correlation with …
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Characterization of a Novel Prostate Tumor-Associated Antigen
… On the basis of reciprocal blocking and chemical tests, it was determined that the TURP-27 and HNK-1 epitopes are not identical. These data imply that the TURP-27 epitope may be a variant of the HNK-1 epitope or that the two epitopes are closely linked, and that the TURP-27 and HNK-1 …
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Surface Functionalised Emulsion- Templated Porous Polymers for In- Vitro Cell Culture
… materials. Specific routes to this include chemical modification, plasma treatment and chemical adsorption. Of these three routes to surface functionalisation, the plasma processing appears to give the best results, with further attachment of biologically-directing molecules, possible. This …
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Garden Soils: Reviewing the Viability of Soil Phosphate Analyses in the Archaeological Identification of Ancient Maya Kitchen Gardens
… compensate for this limitation, various forms of chemical testing (primarily phosphate analysis) are being used to positively identify kitchen gardens and other specific anthropogenically modified spaces that are invisible to standard archaeological techniques. The archaeological community trusts …
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Electrochemical Detection of Aliphatic Sulfur Compounds in Liquid Coal Extracts
… sulfur is removed only during a more costly chemical desulfurization process. The kinds of organosulfur compounds in coal are generally known, but the quantity of each type of compound and the distribution of these compounds throughout the coal matrix has not been studied extensively. The …
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An Investigation of Some Analytical Uses of P-Phenetidine
No abstract prepared.
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Variations of Physical and Chemical Parameters Within a Shallow Wind Influenced Lake
… of the seasonal variations of physical and chemical parameters of a small Iowa artificial lake was needed. Such a study would establish a reference point for future developments in terms of water quality and useage of the defined area. Procedure. Lake Easter, Polk County, Iowa, was studied …
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The formation, properties and behaviour of coastal soft soil deposits at Perlis and other sites in peninsular Malaysia
… Laboratory testing, including consolidation tests, strength tests, chemical tests and fabric analysis were carried out on undisturbed samples obtained from the trial site.Field behaviour of the trial embankment was monitored using several types of instrumentation, including pneumatic …
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The Reeves Collection: An Investigation into Chinese Botanical Drawings, Their Identification and Conservation
… transform infrared spectroscopy (FTIR) and chemical tests. Possible causes of pigment loss and the degradative effects of copper greens were considered. Methods of reversing darkened lead white were investigated and a hitherto unreported Chinese method tested. Consolidants were compared by …
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Use of modified atmosphere technology to maintain quality of direct-set cottage cheese
… by sensory evaluation. Microbiological and chemical tests were conducted to obtain a better understanding of the effects of MAP on cottage cheese. Results obtained demonstrated that there was no change during storage for headspace gas composition. Psychrotrophic and lactic acid bacteria …
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Geospatial analysis of risk components for elevated blood lead levels in Kansas: geologic and anthropogenic factors
… counties residential soils were sampled, and chemical composition was examined with a handheld XRF and an HR ICP-MS. Particle size and pH were recorded for all samples. The presence or lack of of lead sulfate and lead carbonate was identified using XRD. Chemical tests revealed elevated Zn and …
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Understanding the Limits of Lithium-Air Batteries – NMR and Thermodynamic Studies
… need. It goes on to discuss the theory of the chemical structural motifs that promising new solvents would likely have. To aid in studying the breakdown products formed in the lithium air batteries, which limit their lifetime, operando <sup>17</sup>O nuclear magnetic resonance was developed. …
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The oxidation of benzoin and related molecules in glacial acetic acid
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Chemistry, 1961
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Synthesis and applications of functional magnetic polymer beads; synthesis and mass spectrometry analysis of model peptides
… of the beads was in the range of 100-500 μm. Chemical tests showed that the beads were stable in strong acid, strong base and polar solvent. The beads had a fast response to an external magnetic field. A self-emulsion-polymerization approach was developed to synthesize smaller magnetic beads …
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