Search for dissertations about: "Pt IV"

Showing result 1 - 5 of 56 swedish dissertations containing the words Pt IV.

2. 1. Reactions of Model and Anticancer Active Platinum(IV/II) Complexes - A Kinetic and Mechanistic Study

   Author : Kelemu Lemma; Kemiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Model Pt II complexes; Anticancer active Pt IV compounds; Cisplatin; Rescue agents; L-Ascorbic acid; Thiol; Substitution; Kinetics and mechanism; Electron transfer; Inorganic chemistry; Oorganisk kemi;

   Abstract : In this thesis reductions of model and anticancer active Pt(IV) complexes with thiols and ascorbic acid and substitution reactions of cisplatin and model Pt(II) complexes with S-donor nucleophiles (rescue agents) have been investigated using stopped-flow and UV/VIS spectrophotometry. Glutathione (GSH) reduction of the anticancer active Pt(IV) compounds t- and c-[PtCl4(cha)(NH3)] (cha = cyclohexylamine), t-[PtCl4(thiazole)(NH3)] and c-[PtCl4(NH3)2] at 25 oC was observed to be very fast. READ MORE

4. 2. Selective Separation of Metal Ions by Solvent Extraction, Liquid Membranes and Magnetic Nanoparticles

   Author : Abdusalam Uheida; Mamoun Muhammed; Olle Wahlberg; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; solvent extraction; facilitated transport; Pt IV ; Pd II ; Ph III ; permeation medelling; thermodynamic modelling; Materials chemistry; Materialkemi;

   Abstract : .... READ MORE

5. 3. Structure-Reactivity Correlations for Reactions of Palladium(II) and Platinum(IV) Complexes

   Author : Tiesheng Shi; Kemiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; thiol; l-methionine; maleic acid; carboxylic acid; thioether; platinum IV ; palladium II ; linear free energy relationship; volumes of activation; structure-reactivity correlation; reduction; substitution; equilibria; kinetics; mechanism; glutathione; Animal physiology; Djurfysiologi;

   Abstract : The kinetics and mechanism for substitution reactions on tetraaquapalladium(II) by an extended series of thioethers, a great number of carboxylic acids, and olefins have been studied by use of UV-VIS, stopped-flow, and high-pressure stopped-flow spectrophotometry and NMR spectroscopy. Second-order rate constants k and activation parameters (activation enthalpies, entropies, and volumes) for formation of monodentate 1:1 complexes have been determined. READ MORE

6. 4. Two worlds, one goal : A Clinician’s Perspective on Laboratory Analyses in Anticoagulant Treatment

   Author : Kerstin Arbring; Tomas Lindahl; Srinivas Uppugunduri; Margareta Holmström; Gerd Lärfars; Linköpings universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Anticoagulants; Warfarin; DOAC; PT-INR; VKORC1;

   Abstract : Almost precisely a century ago, in the 1920s and 1930s, cattle bled to death in North America after being fed moldy hay containing sweet clover, the yellow Melilotus officinalis, and the white Melilotus albus. The toxic substance in the hay inhibiting blood coagulation was identified and named dicumarol. READ MORE

7. 5. Development and Assessment of Regeneration Methods for Commercial Automotive Three-Way Catalysts

   Author : Henrik Birgersson; Magali Boutonnet; Jim A. Andersson; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; automotive catalyst; TWC; aging; sintering; Pd Rh; Pt Rh; regeneration; oxy-chlorination; dispersion; acid-leaching; mathematical modeling; reaction kinetics; Chemical engineering; Kemiteknik;

   Abstract : Car exhaust catalysts were introduced in the early 1980’s, to limit the release of pollutants such as hydrocarbons, carbon monoxide and nitrogen oxides. These catalysts contain noble metals such as palladium (Pd), platinum (Pt) and rhodium (Rh) and are able to simultaneously abate all three of the above-mentioned pollutants, hence the name three-way catalyst (TWC). READ MORE