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Are self-expanding stents superior to balloon-expanded in dilating aortas? An experimental study in pigs

OBJECTIVE: To study the stent/vessel interaction and distensibility following the natural increase in vascular diameter using self-expanding and balloon-expanded stents. DESIGN: Open experimental study. SETTING: Animal laboratory, university hospital. MATERIALS AND METHODS: Eight Palmaz (P) and eight Gianturco (G) stents were transluminally placed in the infrarenal aortas of 16 pigs. Pulsatile dia

Estimation of respiration frequency using spatial information from the VCG

A new method for extracting respiratory signals from the ECG/VCG is presented. The method is based on the alignment of an observed VCG loop to a reference loop with respect to the transformations of rotation and time synchronisation. The resulting series of estimated rotation angles reflects respiratory-induced changes in the electrical axis of the heart. The respiratory frequency is estimated by

Probabilistic estimation of microarray data reliability and underlying gene expression

Background: The availability of high throughput methods for measurement of mRNA concentrations makes the reliability of conclusions drawn from the data and global quality control of samples and hybridization important issues. We address these issues by an information theoretic approach, applied to discretized expression values in replicated gene expression data. Results: Our approach yields a quan

Gene Expression Changes and Brain Plasticity after Experimental Stroke

Popular Abstract in Swedish Stroke utgör den tredje vanligaste dödsorsaken i västvärlden och är dessutom huvudorsak till långvarigt handikapp hos vuxna individer. Det stora antalet överlevande men handikappade individer utgör ett omfattande problem för samhället inte bara i form av ekonomiska resurser utan även vad gäller personliga trauma. Den kliniska termen stroke omfattar patologiska tillståndStroke is the most common life-threatening neurological disease and ranks as the third leading cause of death in major industrialized countries. It is also the leading cause of serious long-term disability and about sixty percent of survivors have disabilities in their extremities. Recovery of certain neurological functions occurs over time, which has been attributed to endogenous restorative proc

The importance of site isolation and phase cooperation in propane ammoxidation on rutile-type vanadia catalysts

Propane ammoxidation to acrylonitrile over rutile-type vanadia catalysts is discussed regarding phase cooperation and site isolation effects. Compared with the pure phases, biphasic catalysts with both similar to SbVO4 and alpha -Sb2O4 are considerably more selective to the formation of acrylonitrile. It is demonstrated that cooperation between the phases during the calcination of the catalyst and

Het höst i Europa

Danmarks prioritering av EU-utvidgningen under ordförandeskapet i EU:s ministerråd.

Exploring Responsibility : Public and Private in Human Rights Protection

Popular Abstract in Swedish Distinktionen mellan offentligt och privat är en djupt rotad princip för organisering av samhället och dess olika sfärer, såväl inom stater som internationellt. Ett exempel på detta ser vi i utformningen av det internationella försvaret för mänskliga rättigheter som byggts upp sedan det andra världskrigets slut. Här syns distinktionen särskilt tydligt med avseende på atThe theory and practice of international relations are replete with dilemmas related to the distribution of responsibility for human rights protection. Institutionalized notions of public and private empower and shape knowledge of what the spheres of responsibility signify for different kinds of actors. This study examines how the public-private distinction is manifested in controversy concerning

Candesartan prevents angiotensin II-induced facilitation of hypoxic neuronal damage through PKC delta inhibition

To investigate the role of protein kinase C delta (PKC delta) in angiotensin II-induced facilitation mechanisms of hypoxic neuronal damage and whether candesartan, an AT1 receptor antagonist, can suppress these mechanisms, we performed in vitro experiments which were free from vascular components using PC12 cells under hypoxic (12 h)/reoxygenation (0-48 h) conditions. Angiotensin II apparently inc

Three-dimensional analysis of two-phase flow and its effects on the cell performance of PEMFC

For a cathode duct of a proton-exchange membrane fuel cell, a three-dimensional analysis method is further developed to include two-phase, multicomponent gas and heat transport processes. A set of momentum, heat transport, and gas species equations is solved for the whole duct by coupled source terms and variable thermophysical properties. The effects of the electrochemical reactions on the heat g

Frequency Offset Correction for Coherent OFDM In Wireless Systems

In this paper, a new frequency offset correction approach for OFDM is proposed to track a wider range of offsets than conventional proposals, without devoting specific pilot symbols for synchronization. This can be attained since, in coherent OFDM, channel estimation is usually performed employing pilot-symbol assisted-modulation (PSAM), based on inserting known symbols in the time-frequency grid.

Separately inherited defects in insulin exocytosis and beta-cell glucose metabolism contribute to type 2 diabetes.

The effects of genetic variation on molecular functions predisposing to type 2 diabetes are still largely unknown. Here, in a specifically designed diabetes model, we couple separate gene loci to mechanisms of P-cell pathology. Niddm1i is a major glucose-controlling 16-Mb region in the diabetic GK rat that causes defective insulin secretion and corresponds to loci in humans and mice associated wit

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Popular Abstract in Swedish Som ett skepp uti vilda havet, den kristna församlingen i ärkebiskop Laurentius Petris verk I 1593 års Uppsala mötes "förening om läran, ceremonier och kyrkotukt" finns följande avsnitt : Thernäst bejake och vederkännes vi oss alldeles vele holle vidh the Apostoliske, Niceniske och Athanasii symbola, såsom och vidh then äldste, rätte och oförrandrede Ausburgiske confeThe aim of this thesis is to present the ecclesiology of Laurentius Petri, a former student at Wittenberg who was archbishop of Uppsala from 1531 to his death 1573. He had a decisive role in the founding of the Church of Sweden, especially through his Swedish Church Ordinance(1571). Nevertheless most of his seventy-three writings are little known and have been rarely studied. Chapter one starts by