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UWB Systems for Wireless Sensor Networks

Wireless sensor networks are emerging as an important area for communications. They enable a wealth of new applications including surveillance, building control, factory automation, and in-vehicle sensing. The sensor nodes have to operate under severe constraints on energy consumption and form factor, and provide the ability for precise self-location of the nodes. These requirements can be fulfill

Long-term survival of women with basal-like ductal carcinoma in situ of the breast: a population-based cohort study

Background: Microarray gene-profiling of invasive breast cancer has identified different subtypes including luminal A, luminal B, HER2-overexpressing and basal-like groups. Basal-like invasive breast cancer is associated with a worse prognosis. However, the prognosis of basal-like ductal carcinoma in situ (DCIS) is still unknown. Our aim was to study the prognosis of basal-like DCIS in a large pop

The initial care when a child is diagnosed with type 1 diabetes

When a child is diagnosed with diabetes, the symptoms may be in its most severe form with ketoacidosis, to mild symptoms of diabetes, detected incidentally. Moderate and severe symptoms of diabetes presentation require infusion therapy and thereby necessitate hospitalisation for the first few days. The initial management is largely a preparation for family members to help them gain the practical u

Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records

The Greenland ice core from NorthGRIP (NGRIP) contains a proxy climate record across the Pleistocene-Holocene boundary of unprecedented clarity and resolution. Analysis of an array of physical and chemical parameters within the ice enables the base of the Holocene, as reflected in the first signs of climatic warming at the end of the Younger Dryas/Greenland Stadial 1 cold phase, to be located with

Variation in body condition of breeding Savi's Warblers Locustella luscinioides: the reproductive stress and flight adaptation hypothesis revisited

Current theory suggests that mass change in adult birds while breeding may be adaptive (to reduce wing-loading during nestling feeding) or result from physiological stress. To test which might be more important in determining mass loss in breeding Savi's Warblers (Locustella luscinioides), we used a new approach in which the variation in four indices of body condition was described: weight, fat sc

Synthesis, Characterization and Catalytic Activity Studies of Rhenium Carbonyl Complexes Containing Chiral Diphosphines of the Josiphos and Walphos Families

Ten rhenium carbonyl complexes-[Re(H)(CO)(3)(1a)], [Re-3(mu-H)(3)(CO)(10) (1a)], [Re-2(CO)(9)(2a)], [Re-2(CO)(8)(2a)], [Re-2(CO)(9)(2b)], [{Re-2(CO)(9)}(2)(2b)], [Re-2 (CO)(8)(2b)], [Re-2(CO)(8)(1b)], [Re-2(mu-H)(2)(CO)(6)(2b)] and [Re-3(mu-H)(3)(CO)(11)(2b)]-containing different bidentate chiral phosphine ligands of the Josiphos (1a, 1b) and Walphos (2a, 2b) families have been synthesized and ful

Obstacles to the prevention of overweight and obesity in the context of child health care in Sweden

Background: Overweight and obesity in younger children could better be brought in focus through a deeper understanding of how Child Health Care nurses (CHC-nurses) perceive their work with the problems of overweight at the CHC Centers. The aim of this study was to elucidate the CHC-nurses conceptions of their preventive work with childhood overweight and obesity in Child Health Care. Method: A qua

LED-belysning och brukaren

Ljusforskning är om något diversifierad och omfattar teorier och metoder från skilda discipliner som teknik, medicin och samhällsvetenskap. Det finns också en förväntan att erhållna forskningsresultat skall kunna appliceras direkt i verkliga miljöer. I och med introduktionen av LED har många tidigare studier som behandlat glödlampor, lysrör och andra ljuskällor inaktualiserats. Ny kunskap - och nyLighting research is diversified and includes theory and methodology from disciplines as different as technology, medicine and social sciences. There is also an expectation on research results to be directly applicable in real environments. The introduction of LED has furthermore made previous research on incandescent lamps, fluorescent lamps and other light sources, outdated. New knowledge – and

Analysis of carbonyl compounds in sea buckthorn for the evaluation of triglyceride oxidation, by enzymatic hydrolysis and derivatisation methodology

Carbonyl compounds formed in sea buckthorn berry (Hippophae rhamnoides) and oil samples as a result of lipid oxidation were determined by enzymatic hydrolysis followed by derivatisation with 2,4-dinitrophenylhydrazine and analysed by LC-UV and electrospray ionisation (ESI) tandem mass spectrometry (MS/MS). Several classes of carbonyl compounds such as saturated, unsaturated, linear and branched al

Prostate Specific Antigen Velocity Does Not Aid Prostate Cancer Detection in Men With Prior Negative Biopsy

Purpose: Prostate specific antigen velocity has been proposed as a marker to aid in prostate cancer detection. We determined whether prostate specific antigen velocity could predict repeat biopsy results in men with persistently increased prostate specific antigen after initial negative biopsy. Materials and Methods: We identified 1,837 men who participated in the Goteborg or Rotterdam section of

Geostatistical approach for statistical descripion of uplift pressures: Part I

The possibilities of the use of structural reliability analysis in concrete dam design and assessment is investigated in Sweden. For such analysis, statistical descriptions of the loads and resistances are necessary. Uplift pressure has a large impact on safety, and is difficult to quantify. This paper describes the methodology of a geostatistical approach to simulate the uplift pressure, and an e

Complexity of column generation in network design with path-based survivability mechanisms

Abstract in Undeterminedhis survey deals with computational complexity of column generation problems arising in the design of survivable communication networks. Such problems are often modeled as linear programs based on noncompact multicommodity flow network formulations. These formulations involve an exponential number of path-flow variables, and therefore require column generation to be solved

Less followership, less leadership? An inquiry into the basic but seemingly forgotten downsides of leadership.

Leadership is generally viewed as important and beneficial for individuals as well as organizations. The term, however, also implies followership and the targets for leadership may be less enthusiastic about adopting a follower position. From a follower’s point of view, there might be downsides associated with a leadership/followership relationship, including negative effects on identity and reduc

NADPH-dependent thioredoxin reductase and 2-Cys peroxiredoxins are needed for the protection of Mg–protoporphyrin monomethyl ester cyclase

Abstract The chloroplast-localized NADPH-dependent thioredoxin reductase (NTRC) has been found to be able to reduce hydrogen peroxide scavenging 2-Cys peroxiredoxins. We show that the Arabidopsis ntrc mutant is perturbed in chlorophyll biosynthesis and accumulate intermediates preceding protochlorophyllide formation. A specific involvement of NTRC during biosynthesis of protochlorophyllide is indi

Andean Speciation and Vicariance in Neotropical Macrocarpaea (Gentianaceae-Helieae)

The pains Macrocarpaea (Griseb.) Gilg (Gentianaceae. Helieae) is among the largest woody genera of tropical gentians, with most of its species occurring in the wet mountainous forest., of the Andes. Phylogenetic and dispersal-vicariance analyses (DIVA) of 57 of the 105 currently recognized species in the genus. Using two data sets front nuclear DNA (ITS and 5S-NTS sequences) and morphology. show i

Long-term impact of postconditioning on infarct size and left ventricular ejection fraction in patients with ST-elevation myocardial infarction

Background: Ischemic postconditioning (PostC), reperfusion in brief cycles, is known to induce short-term reduction in infarct size in patients with ST elevation myocardial infarction (STEMI), especially among those with large myocardium at risk (MaR). The aim of the present study was to investigate the long-term effect of PostC on infarct size and left ventricular ejection fraction (LVEF). Method

Visualizing charge separation in bulk heterojunction organic solar cells.

Solar cells based on conjugated polymer and fullerene blends have been developed as a low-cost alternative to silicon. For efficient solar cells, electron-hole pairs must separate into free mobile charges that can be extracted in high yield. We still lack good understanding of how, why and when carriers separate against the Coulomb attraction. Here we visualize the charge separation process in bul

Impact of early disease factors on metabolic syndrome in systemic lupus erythematosus: data from an international inception cohort

Background The metabolic syndrome (MetS) may contribute to the increased cardiovascular risk in systemic lupus erythematosus (SLE). We examined the association between MetS and disease activity, disease phenotype and corticosteroid exposure over time in patients with SLE. Methods Recently diagnosed (< 15 months) patients with SLE from 30 centres across 11 countries were enrolled into the Systemic