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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 158 for “"Degradation Products"”.
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Degradation Products of Streptothricin
Made available in DSpace on 2014-12-05T19:36:27Z (GMT). No. of bitstreams: 1 0018170.pdf: 7641911 bytes, checksum: 34811410015f00464469a0f0c503827c (MD5) Previous issue date: 1956
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Analysis of organosilicone surfactants and their degradation products
… for uptake enhancement. Aspects of Silwet L-77 degradation were also addressed, for which API/MS methods were shown to be valid and informative. The well-established instability of Silwet L-77 to acid and alkaline conditions was characterised in more detail, with products, mechanisms and …
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Synthesis and Characterization of Oil Lubricant Antioxidant Degradation Products
… by monitoring the quantity of antioxidant degradation products. An antioxidants of interest is N-phenyl-1-aminonaphthalene (PAN). Three major oxidation products of PAN have been identified, synthesized, and isolated: C-C coupled PAN dimer, C-N coupled PAN dimer, and naphthyl oxidized PAN …
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Stability Study of Phoslactomycin B and Analysis of Degradation Products
… by semi-preparative HPLC . A study of PLM-B degradation was carried out in the pH range of 2-10 at 30ºC and 50°C using HPLC. The PLM-B decomposition was observed to exhibit a U-shaped pH profile and demonstrated both acid and base-catalyzed decomposition. The decomposition could be described …
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The determination of drug stability by HPLC assay of degradation products.
… the decomposition by analysis of decomposition products. Conventional methods of drug stability testing are criticised and the limitations are shown to be largely a result of analysing for un-decomposed drug. Using simulated analytical results incorporating various levels of precision, the use …
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Analysis of Strobilurin Fungicides, Neonicotinoid Insecticides and Degradation Products in Atmospheric Particles
… of 8 neonicotinoid insecticides with 5 degradation products of neonicotinoid insecticides and 7 strobilurin fungicides in the particle phase of atmospheric samples. Detection limits ranged from 0.5 to 3 ng/mL and the recovery percent ranged between 83.5% to 108.3% with relative standard …
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Monitoring for sulfonated azo dyes and their degradation products in industrial and municipal wastewater
… Red RB, and Remazol Golden Yellow 3RA, and their degradation products. HPLC/ diode array detector, GC/MS, and LC/MS were utilized to characterize the purified dyes and the wastewaters and identify degradation products of the dyes resulting from several biological and chemical treatment processes. …
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Biological activity of anthocyanins and their phenolic degradation products and metabolites in human vascular endothelial cells
… have investigated the activity of anthocyanin degradation products and metabolites which are likely to mediate bioactivity in vivo. The present thesis therefore examined the vascular bioactivity in vitro of anthocyanins, their phenolic degradants, and the potential for interactions between …
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High-performance liquid chromatographic methods for quantitative assessment of degradation products and extractives in pretreated lignocellulose.
… sugars to produce ethanol. However, a variety of degradation products are produced upon dilute acid pretreatment of lignocellulosic biomass, which exert an inhibitory effect on downstream fermentation processes and reduce bioethanol conversion. Thus there is increased the demand for reliable …
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Part One: Synthetic and Degradative Studies of Two Streptovaricin Degradation Products, Streptovarone and Dapmavarone. Part Two: Synthetic and Spectral Studies of Highly Substituted 1,4-Naphthoquinones
Made available in DSpace on 2014-12-09T17:36:50Z (GMT). No. of bitstreams: 1 7021056.pdf: 6933946 bytes, checksum: 3a4cb19b63222f0503413e1b61c5cdf8 (MD5) Previous issue date: 1970
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Observations on the Ruminal Protein Degradation Products and the Absorption of Ruminally Derived Free and Peptide-Bound Amino Acids via Ovine Forestomach Epithelia in Vitro
… small amounts). Also, the ruminal microbial degradation of dietary proteins may influence the amounts and types of free and peptide-bound amino acids absorbed via forestomach.
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Reactivity Studies of Tridhydropyridine Radical Cautions by using Fourier-Transform Ion Cyclotron Resonance Mass Spectrometry and Advancement of Mass Spectrometric Analysis of Asphaltenes and Degradation Products
… the 3-phenylallyl alcohol moiety in lignin degradation product mixtures. This method was needed because most lignin degradation products with these structural features undergo fragmentation when they are ionized in mass spectrometers by using common methods. The specific goal was to develop …
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Chlorophyll diagenesis in the water column and sediments of the Black Sea
This thesis examines the degradation pathways of chlorophyll in the Black Sea water column and sediments. Measurements are made of total chlorophyll in sediment traps from two locations and depths in the water column, and at two locations in surface sediments. Individual chlorophyll degradation …
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Experimental Studies for Development of a Purification Process for Single and Mixed Amine Solvents
… of CO2 from flue gas are subject to solvent degradation, which results from the reaction of impurities in the gas stream. This leads to the formation of degradation products, which could lead to many operational problems such as changes in the solvent absorption capacity and physical …
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Pesticide Adsorption and Degradation Properties as Influenced by Iron Oxidation State in Clay Minerals
… the adsorption and produced substantial degradation of all pesticides. When reacted with chemically treated clays, the total amount of atrazine removed from solution by the reduced clay was much greater than by the oxidized or reoxidized clays. Similar behavior was observed for the other …
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The Effects of Diesel Fuel on the Growth of Selected Freshwater Phytoplankton
… of freshwater algae. The effects of bacterial degradation products of the diesel fuel were also tested. Results of the investigation indicate that under specific culture conditions two of the algae, Chlamydomonas and Scenedesmus, appeared enhanced by the water extract. Selenastrum was …
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