Search for dissertations about: "stabilizer"

Showing result 1 - 5 of 66 swedish dissertations containing the word stabilizer.

2. 1. Reactions in the System Nitro-cellulose/ Diphenylamine with Special Reference to the Formation of a Stabilizing Product Bonded to Nitro-cellulose

   Author : Torbjörn Lindblom; Bengt Nygård; Sten-Eric Lindquist; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Nitro-cellulose; NC; Propellant; Stabilizer; Diphenylamine; DPA; Stability; Shelf-life; Chemometry; FTIR; HPLC; Microcalorimetry; Analytisk kemi; Analytical chemistry; Analytisk kemi;

   Abstract : The methods HPLC, microcalorimetry and FTIR together with chemometry, provide good analytical tools to follow the degradation of nitro-cellulose.The degradation products formed from diphenylamine (DPA) during storage can be followed with HPLC. FTIR, together with chemometry, also gives the precision needed for safety control of propellants. READ MORE

4. 2. Mass Stabilization, Stability and Settlement in Mass Stabilized Peat

   Author : Nenad Jelisic; Byggnadsmekanik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mass stabilization; stabilizer; field investigations; laboratory investigations; settlement; stability; peat; Building construction; Byggnadsteknik;

   Abstract : Peat is badly suited as a base for road and railway embankments due to its geotechnical properties. The usual procedure has been, therefore, to excavate peat and replace it with blasted rock. READ MORE

5. 3. Voltage Stabilizers: From Design to Synthesis, Processing and Electrical Characterization

   Author : Markus Jarvid; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Polyethylene; Degradation; XLPE; Electrical treeing; Voltage stabilizer; Cable; Insulation;

   Abstract : Voltage stabilizers are additives capable of inhibiting electrical treeing; a degradation mechanism for insulation materials subjected to strong divergent electric fields. The intended use is in cross-linked polyethylene (XLPE) high voltage power cable insulation where minute defects in the manufacturing process can give rise to the conditions needed for the initiation of treeing, which in the worst case scenario leads to failure of the insulation system with blackouts and expensive repairs as a consequence. READ MORE

6. 4. Effects of Ubiquinone-10 on the Stability and Mechanical Properties of Lipid Membranes

   Author : Emma K. Eriksson; Katarina Edwards; Victor Agmo Hernández; Emma Sparr; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; ubiquinone-10; lipid bilayers; membrane stabilizer; liposome permeability; osmotic shock; cuvettes; solanesol; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

   Abstract : Ubiquinones are a group of fat-soluble molecules present in many biological membranes. The most abundant version in humans, ubiquinone-10 (Q10), plays an important role in the mitochondrial respiration chain and also functions as a powerful antioxidant. Accumulating evidence suggests that Q10 also could have other functions in the membrane. READ MORE

7. 5. Structural Determination of Drug Metabolites from Doping Classed Compounds Using Mass Spectrometry

   Author : Annelie Hansson; Mikael Hedeland; Ulf Bondesson; Peter Hemmersbach; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mass spectrometry; UHPLC-MS MS; doping control; Cunninghamella elegans; selective androgen receptor modulator; SARM; andarine; ostarine; LGD-4033; roxadustat; HIF stabilizer; Analytical Pharmaceutical Chemistry; Analytisk farmaceutisk kemi;

   Abstract : Doping control in equine sports is important for a fair competition, but also to ensure the integrity of the betting system, as well as for animal welfare reasons. To detect the use of illicit compounds, screening for the parent compound is common. However, by using a metabolite as the analytical target instead, the detection time can be prolonged. READ MORE