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GaN nanowires as probes for high resolution atomic force and scanning tunneling microscopy

GaN nanowires are potential candidates for use in scanning probe microscopy due to their well-defined, reproducible, geometric shapes, their hardness, and their light guiding properties. We have developed and investigated probes for high resolution atomic force microscopy and scanning tunneling microscopy utilizing GaN nanowires as probes. The nanowires are n-doped and the morphology of the nanowi

Infections Related to the Use of Medical Devices and Changes in the Oropharyngeal Flora

Background: Humans exist in mutualistic balance with a large range of microbiota. Illness and hospitalization can disturb this balance and contribute to hospital-acquired infections (HAIs), which occur most often in critically ill patients. The use of medical devices such as central venous catheters (CVCs) and endotracheal tubes (ETTs) is essential in the care of critically ill patients. At the sa

Control of FtsZ-ring formation and cell division in Streptomyces venezuelae

Cell division is essential for all life forms. In bacteria, this fundamental process is precisely orchestrated by a protein, FtsZ, the ancestral homolog of eukaroytic tubulin. On the onset of division, at the division site, FtsZ assembles into a cytoskeleton structure - the Z ring - that recruits other division proteins and constricts the membrane together with cell wall synthesizing machinery, ev

Applications of Vectorcardiography for Diagnosis and Risk Stratification in Subpopulations at Risk for Life-Threatening Arrhythmias

Introduction: Vectorcardiography, or 3-dimensional electrocardiography is a tool which can be used to identify subtle changes in the electrical forces of the heart, and which can be applied to atrial depolarization, ventricular depolarization and ventricular repolarization for prognostic and diagostic purposes. Methods: Kor’s regression-related and quasi orthogonal methods was used to derive vect

Den svenska modellen i en oviss tid : Fack, arbetsgivare och kollektivavtal på en föränderlig arbetsmarknad

Den svenska arbetsmarknadsmodellen bygger på att en hög andel löntagare är med i facket. Därför är facklig organisering inte bara viktig för fackförbunden och för de enskilda medlemmarna, utan också för samhället i stort. Denna skrift är tänkt att utgöra ett referensverk med en stor mängd statistik om facklig organisering på svensk arbetsmarknad och analyser av utvecklingen över tid. Bland annat r

Risks of adverse events in patients with orthostatic intolerance undergoing surgery with general anesthesia

INTRODUCTION: Orthostatic intolerance (OI) is a group of disorders characterized by symptoms that occur upon standing and resolve with recumbence. Although well established but not widely recognized, these diagnoses may create uncertainty for clinicians dealing with a patient affected by OI and requiring a surgical procedure.OBJECTIVES: To determine the rate of intra- and postoperative major adver

Results of renal artery revascularization in the post-ASTRAL era with 4 years mean follow-up

Purpose: To investigate contemporary results of percutaneous transluminal renal angioplasty (PTRA). Materials and Methods: A multicentre retrospective study analysing all patients treated with PTRA for primary symptomatic renal artery stenosis (RAS) between 2010 and 2013 at four tertiary centres. Procedures during the preceding four years were counted to evaluate for change in PTRA frequency. Resu

How encoding-retrieval overlap in gaze positions influences episodic memory accessibility in the “real world”

An extensive body of research has shown that episodic remembering involves spontaneous eye movements that largely reproduce the gaze patterns that were present during encoding (e.g. Brandt & Stark, 1997; Johansson, et al., 2006; 2012; Johansson & Johansson, 2014; Richardson & Spivey, 2000). We have further demonstrated that gaze positions showing compatibility between encoding and retr

Optimising performance in clinical capsule endoscopy

Video capsule endoscopy (VCE), perfomed by ingesting a small vitamin-sized camera pill, was developed over a period of a couple of decades and –since its introduction in clinical practice at the dawn of the millennium– has become an essential tool in the diagnosis and management of small bowel (SB) diseases. At the same time, other fields such as minimally invasive diagnosis of other parts of the

Kenyan Community Currencies

The case is about grassroots monetary innovations carried out for social purposes. Through the case of the Kenyan community currencies the reader gets an insight into the social challenges these currencies aim to address, the effort that goes into designing these local monies as well as into organising the communities that use them. The reader is presented with the practical challenges faced by th

Hanseatic League of Science

Hanseatic League of Science (HALOS)Hanseatic League of Science (HALOS) is a unique cross-border ÖKS interreg project with 15 official partner organizations including research institutes in Denmark, Sweden and Germany. Through HALOS the Life Science research and innovation ecosystems will get access to crossborder cooperation platforms where academia and industry can meet. Key stakeholders will be

Cross-vendor transfer and RF coil comparison of a high-resolution MP2RAGE protocol for brain imaging at 7T

Abstrakt. Ett etablerat MP2RAGE-protokoll för semikvantitativ strukturell hjärn-MRI överfördes frånen 7T MR-skanner till en annan leverantör med jämförbar hårdvara, men motsatt polaritet. På det härsystemet, kan skanningstiden reduceras från 11 till 8 minuter genom elliptisk k-space-sampling. Tre konfigurationerav radiofrekvens (RF) överföring jämfördes (enkelkanal med kvadraturen slits, två och åAbstract. An established MP2RAGE protocol for semi-quantitative structural brain MRI was transferred from one 7T MR scanner to that of another vendor featuring comparable hardware, but opposite polarity. On this system, the scan time could be reduced from 11 to 8 minutes by elliptical k-space sampling. Three configurations of radio-frequency (RF) transmission were compared (single channel with qua

Numerical calculations of temperature distribution resulting from intracavitary heating of the uterus

Objective To estimate, using numerical calculations, the depth of tissue damage in the uterus following balloon thermal endometrial destruction. Design A parameter, therapeutic depth, was defined. This was the maximum depth into the uterine myometrium, from the uterine cavity, at which a predefined temperature was reached after a certain time and with a constant intracavitary temperature. Setting

Endometrial destruction by hyperthermia - A possible treatment of menorrhagia : An experimental study

Background. Treatment of menorrhagia by heat-destruction of the endometrium, intended to be an alternative to hysterectomy, was investigated in an experimental study. Method. A specially designed catheter (Cavaterm™) with a silicone balloon containing a self-regulating heating element is inserted into the uterus, rilled with glycine to a pressure of around 180 mmHg and heated to about 75°C. We inv

A current injecting device for electrical impedance tomography

Electrical impedance tomography (EIT) has to be improved in order to become an accepted diagnostic technique in clinical use. The aim of this study is to improve the hardware of this technique and preferably upgrade the current injecting device. Instead of using a constant current generator the idea is to implement a voltage source and measure current accurately, in order to improve the resolution