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Optical properties of doped antiferromagnets

We investigate the consequences of an incommensurate magnetic order in doped La2-xSrxCuO4 using dynamical mean-field theory for the effective single-band model. The high-energy optical transitions are due to high-energy excitations across large Mott-Hubbard 'gap,' while low-energy excitations involve a pseudogap induced by the local spin order. The latter lead to a strong drop in the scattering ra

A new automated method for analysis of rCBF-SPECT images based on the active-shape algorithm: normal values.

Most nuclear medicine clinicians use only visual assessment when interpreting regional cerebral blood flow (rCBF) from single-photon emission computed tomography (SPECT) images in clinical practice. The aims of this study were to develop a new, easy to use, automated method for quantification of rCBF-SPECT and to create normal values by using the method on a normal population. We developed a 3-dim

The governance of knowledge in project-based organizations

This research investigates patterns of knowledge governance practices in project-based organizations (PBOs). Five propositions about knowledge governance in PBOs were deductively and empirically tested using qualitative data from 82 interviews. The results were triangulated with those of prior studies. Results indicate that knowledge governance practices in PBOs are impacted by structural and situ

The influence of posterior-inferior tibial slope in ACL injury.

PURPOSE: To explore the effect of different posterior-inferior tibial slope (PITS) angles on ACL injury at non-contact sports, knee laxity and the need for ACL reconstruction. METHODS: One hundred patients with an acute, arthroscopically verified total ACL rupture were followed prospectively with the intention of treating the injury without reconstruction. Knee laxity was assessed with the Lachman

Early Development of Secondary Hyperparathyroidism following Renal Transplantation.

Background: The optimal level of intact parathyroid hormone (iPTH) post renal transplantation (RT) is not known. We aimed to describe the development of secondary hyperparathyroidism (SHPT) in a Swedish population of RT recipients and report morbidity in terms of fractures and vascular events in the first post transplant year. We also aimed to identify pre RT factors that influence levels of iPTH

Level crossing prediction with neural networks

A level crossing predictor or alarm system with prediction horizon k is said to be optimal if it, at time t detects that an upcrossing will occur at time t + k, with a certain high probability and simultaneously gives a minimum number of false alarms. For a Gaussian stationary process, the optimal level crossing predictor can be explicitly specified in terms of the predicted value of the process i

Some results on fast algebraic attacks and higher-order non-linearities

In this study, the authors investigate the resistance of Boolean functions against fast algebraic attacks and deduce a bound between fast algebraic immunity and higher-order non-linearity (it is the first time that a bound between these two cryptographic criteria is given). The authors then show that the fast algebraic immunity of the following two classes of Boolean functions is not good: (a) The

Roles of Heparin-Binding Protein in Bacterial Infections.

Infectious diseases remain a major health problem, where sepsis and other severe infectious diseases are common causes of morbidity and mortality. The importance of early and appropriate treatment of sepsis and severe bacterial infections has been underlined by the successes of measures like the Surviving Sepsis Campaign, among others. Thus, there is a need for clinical and laboratory tools to ide

Budget impact analysis of surgical treatment for obesity in sweden.

Background: The recent substantial increase in the number of obese surgeries performed in Sweden has raised concerns about the budget impact. Objective: Our aim in this paper is to present an assessment of the budgetary impact of different policies for surgical intervention for obese and overweight subjects from a healthcare perspective in Sweden. Methods: The model simulates the annual expecte

Prevalence of germline TP53 mutations and history of Li-Fraumeni syndrome in families with childhood adrenocortical tumors, choroid plexus tumors, and rhabdomyosarcoma: A population-based survey.

PURPOSE: Whether childhood adrenocortical tumors (ACTs), choroid plexus tumors (CPTs), and rhabdomyosarcoma (RMS) are early manifestation of Li-Fraumeni syndrome (LFS) is uncertain. In this study, we evaluated the frequency of germline TP53 mutations and family history in a population-based series of patients. PATIENTS AND METHODS: We identified children (≤18 years) diagnosed between 1958 and

Influence of prosthesis-patient mismatch on diastolic heart failure after aortic valve replacement.

BACKGROUND: Bioprostheses for supraannular placement have been developed to optimize the hemodynamic performance after aortic valve replacement. To evaluate the potential benefit of this design, we analyzed the influence of prosthesis-patient mismatch on diastolic function and left ventricular mass regression and evaluated the clinical performance of the Sorin Soprano and Medtronic Mosaic in the a

URB937, a peripherally-restricted inhibitor for fatty acid amide hydrolase, reduces prostaglandin E2 -induced bladder overactivity and hyperactivity of bladder mechano-afferent nerve fibers in rats.

To determine if an inhibition of the endocannabinoid-degrading enzyme fatty acid amide hydrolase (FAAH) can counteract the changes in urodynamic parameters and bladder afferent activities induced by intravesical prostaglandin E2 (PGE2 )-instillation, we studied effects of URB937, a peripherally-restricted FAAH inhibitor, on single-unit afferent activity (SAA) during PGE2 -induced bladder overactiv

Coagulation activation and ultrasound characteristics in patients with carotid artery disease.

INTRODUCTION: Elevated levels of markers for thrombin activation are associated with plaque echogenicity and degree of stenosis in patients with carotid artery stenosis. The Activated Protein C-Protein C Inhibitor (APC-PCI) complex reflects activation of the Protein C system and is a measure of thrombin generation. The aim of the present study was to examine APC-PCI complex in patients undergoing

Laser-induced Fluorescence Studies of Meso-tetra(hydroxyphenyl)chlorin In Malignant and Normal-tissues In Rats

meso-Tetra(hydroxyphenyl)chlorin (mTHPC) is an attractive second-generation dihydroporphyrin photosensitiser for use in photodynamic therapy. In this study, 1.3mgkg(-1) body weight mTHPC was administered intravenously, and laser-induced fluorescence was used to characterise and compare its localisation and retention in different rat tissues, including an induced experimental adenocarcinoma, 24 h a

Looking back at the start of the bone and joint decade what have we learnt?

The Bone and Joint Decade 2000-2010 started as a Swedish initiative in 1996 leading to the UN declaration 1999 followed by the WHO launch 2000. A ten year multidisciplinary and global endeavor moving musculoskeletal conditions onto the research and health agenda is now recognized. Some lessons learned during the journey are presented.