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Correlation between stoichiometry and surface structure of the polar MgAl2O4(100) surface as a function of annealing temperature

The correlation between surface structure, stoichiometry and atomic occupancy of the polar MgAl2O4(100) surface has been studied with an interplay of noncontact atomic force microscopy, X-ray photoelectron spectroscopy and surface X-ray diffraction under ultrahigh vacuum conditions. The Al/Mg ratio is found to significantly increase as the surface is sputtered and annealed in oxygen at intermediat

Identification of triaxial strongly deformed bands in Hf-168

Possible decay pathways associated with three candidates for triaxial strongly deformed (TSD) bands in Hf-168 have been investigated. The spin and excitation energy of the strongest band, TSD1, were determined approximately based on gamma-ray coincidence relationships. Discrete links were established for the second band. The overall agreement between the observed properties of the bands and cranki

Determining 'true' glomerular filtration rate in healthy adults using infusion of inulin and comparing it with values obtained using other clearance techniques or prediction equations.

Objective. To determine 'true' glomerular filtration rate (GFR) in healthy adults as renal clearance following infusion of inulin, and compare that result with those obtained using other markers and clearance techniques and with estimations of GFR using creatinine-based prediction equations. Material and methods. Twenty healthy volunteers (11 females) with a median age of 27 years (range 19-36 yea

Smoking as a risk factor for the radiological severity of rheumatoid arthritis: a study on six cohorts

Background Smoking is a risk factor for the development of anti -citrullinated protein antibodies (ACPA) positive rheumatoid arthritis (RA). Whether smoking predisposes to severe joint damage progression is not known, since deleterious, protective and neutral observations have been made. Objective To determine the effect of smoking on joint damage progression. Methods Smoking status was assessed i

Three-dimensional assessment of cardiac function; When right is wrong

Popular Abstract in Swedish Bedömning av höger sida av hjärtat är viktig hos patienter med hjärtsjukdom; i synnerhet hos patienter med förhöjt tryck i lungkretsloppet. Sänkt högerkammarfunktion och förhöjt tryck i höger förmak har visats vara prognostiskt dåligt. Två-dimensionellt ultraljud av hjärtat (ekokardiografi) är den vanligaste metoden för att bedöma hjärtats funktion, men högerkammaren ärAssessment of the right side of the heart is important in patients with heart disease; especially in patient with elevated pressure in the lung circulation. Decreased right ventricular function and elevated pressure in the right atrium are of poor prognostic value. Two-dimensional echocardiography (ultrasound of the heart) is the most commonly used method to assess the hearts function, but the rig

Validation of the IHE Cohort Model of Type 2 Diabetes and the Impact of Choice of Macrovascular Risk Equations.

Health-economic models of diabetes are complex since the disease is chronic, progressive and there are many diabetic complications. External validation of these models helps building trust and satisfies demands from decision makers. We evaluated the external validity of the IHE Cohort Model of Type 2 Diabetes; the impact of using alternative macrovascular risk equations; and compared the results t

Hypermodernist Travellers in a Postmodern World

Postmodernist perspectives in research have tended to embrace ambiguity, complexity, interconnectedness and contradiction, and have sometimes been described as a rejection of the ‘Grand Theories’ of Modernism. They have been said to reflect a view that previously taken-for-granted assumptions about the organizing principles of social phenomena must be regarded sceptically, and often make use of ir

Oxidative stress and inflammation as a response to glucose exposure and dialysis

Abstract: The main player of this thesis is glucose, both on a cellular level and with a clinical approach. Too much or wrongly handled glucose contributes to increased inflammation and oxidative stress, which is reinforced by the negative influences of uraemia and dialysis treatment. In addition, trace element status is also affected in dialysis patients. Hyperglycaemia contributes to glucose deg

Thylakoid membranes from green plants affect appetite and promote body weight loss

Popular Abstract in Swedish Övervikt och fetma fortsätter öka världen över, och har redan nått enorma proportioner. Med dessa tillstånd följer en rad sjukdomar, så som diabetes typ 2, hjärtoch kärlsjukdomar och en del cancersjukdomar. Idag är det globalt sett fler människor som dör av fetma och de sjukdomar som är relaterade till övervikt, än som dör av undervikt och svält. Övervikt orsakas främstThe incidence of overweight and obesity has reached alarming proportions. Today, overweight, obesity and the metabolic diseases cause more death than starvation. To counteract an increasing body weight gain, regulation of appetite and a controlled food intake is of greatest importance. Simply put, body weight is regulated by the amount of energy ingested, and the amount of energy expended. In toda

Determinants of kidney function in Swedish families: role of heritable factors.

The aim of this study was to evaluate the determinants of kidney function and the role of heritable factors in a sample of 249 siblings free from known cardiovascular disease and without antihypertensive drugs belonging to 110 families. Four different measures and estimates of kidney function were considered. Blood pressure was recorded during 24 h by ambulatory blood pressure monitoring. Heritabi

A rotatable electron spectrometer for multicoincidence experiments

We have developed a rotatable hemispherical spectrometer with good energy and angular resolution, which can be positioned with the lens axis arbitrarily within a solid angle of 1 pi. The collection angle of the emitted electrons with respect to the polarization axis of the light is set by means of a three-axes goniometer, operating under vacuum. An important requirement for this setup was the poss

Experimental evidence for mixed dissociative and molecular adsorption of water on a rutile TiO2(110) surface without oxygen vacancies

We present evidence for mixed molecular and dissociative water adsorption at monolayer coverage on a rutile TiO2(110) surface free from oxygen vacancies using synchrotron radiation photoemission. At monolayer coverage the OH:H2O ratio is close to 0.5 and reducing the coverage by heating yields an increased OH:H2O ratio. At room temperature neither species originating from the monolayer on the defe

DNA-lipid self-assembly: phase behavior and phase structures of a DNA-surfactant complex mixed with lecithin and water

The co-assembly of DNA and lipids has broad implications, from the structure of the cell nucleus to gene delivery formulations. To progress in the fundamental understanding of DNA-lipid interactions the self-assembly behavior of a cationic surfactant (dodecyltrimethylammonium, DTA) with DNA as a counterion in mixtures of water and lecithin was investigated. The phase diagram was established and th