Search for dissertations about: "reversal rates"

Showing result 1 - 5 of 14 swedish dissertations containing the words reversal rates.

2. 1. Self-Normalized Sums and Directional Conclusions

   Author : Fredrik Jonsson; Allan Gut; Josef Steinebach; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Self-normalized sums; heavy-tailedness; Student s t-statistic; distributional symmetry; exponential tilting; directional conclusions; reversal rates; multiple statistical inference; the Benjamini-Hochberg procedure;

   Abstract : This thesis consists of a summary and five papers, dealing with self-normalized sums of independent, identically distributed random variables, and three-decision procedures for directional conclusions. In Paper I, we investigate a general set-up for Student's t-statistic. READ MORE

4. 2. Electrical remodeling in arial fibrillation - assessment using surface electrocardiograms, prognostic implications and potential reversal

   Author : Andreas Bollmann; Kardiologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; atrial fibrillation; electrocardiography; stroke; biomarkers;

   Abstract : The fibrillatory rate of the surface ECG during atrial fibrillation (AF) has been suggested for quantification of the individual atrial remodeling, to monitor interventions and to predict the response to different therapies. In this dissertation, the relation between fibrillatory rate of the surface ECG and (1) clinical and echocardiographic variables, (2) the outcome of cardioversion, (3) circulating markers of inflammation and hemostasis, (4) the risk of left atrial thrombus formation, (5) the risk of stroke, and (6) the effects of candesartan on the fibrillatory rate were investigated in human persistent atrial fibrillation (AF). READ MORE

5. 3. Problems of stratigraphic correlation across the Arctic Ocean

   Author : Emma Sellén; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sedimentology; Sedimentologi;

   Abstract : Published articles on Arctic Ocean sedimentation rates generally falls into two categories; one suggesting mm/ka-scale sedimentation rates in the Amerasian Basin and the other cm/ka-scale rates in the Eurasian Basin. This is due to the interpretation of the first measured paleomagnetic polarity change in sediment cores as either the Brunhes-Matuyama (781 ka) reversal or as the short time magnetic excursion, Biwa II (220 ka) within the Brunhes Chron. READ MORE

6. 4. Homogeneous and Heterogeneous Cluster-Based Catalysts for Asymmetric Reactions

   Author : Ahmed Fawzy; Kemisk fysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Asymmetric synthesis; hydrogenation; ruthenium; osmium; rhenium; phosphine ligands; chirality.;

   Abstract : Synthesis and characterization of new transition metal carbonyl clusters has been undertaken, and evaluation of the new clusters to act as catalysts/catalysts precursor in asymmetric reactions has been carried out. The catalytic hydrogenation of tiglic acid under relatively mild conditions, using diastereomeric clusters of the general formula [(µ-H)2Ru3(µ3-S)(CO)7(µ-1,2-L)] (L= chiral diphosphine of the ferrocene-based Walphos and Josiphos families) as catalysts, reveal different catalytic behavior in terms of conversion and enantioselectivity. READ MORE

7. 5. Dynamics of open fermionic nano-systems -- a fundamental symmetry and its application to electron transport in interacting quantum dots

   Author : Jens Schulenborg; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; fermion parity; voltage switch; quantum dot; open fermionic quantum system; fermionic duality; master equation; non-equilibrium transport; charging energy; inverted energy; transient response; energy-dependent coupling;

   Abstract : The study of electronic transport through strongly confined, interacting open quantum systems has regained considerable interest over the past years. One main motivation behind this concerns the possibility of time-dependently controlled operations on individual electrons, promising applications in, e.g. READ MORE