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Din sökning på "literature – culture – media" gav 59452 sökträffar

Synthesis of Siphonazole B Through Domino Cycloisomerization-Oxazolonium Ion Rearrangements

Abstract 4-Alkenyl- and 4-acyloxazoles represent important substructures across a diverse array of bioactive molecules. Practical methods to synthesize these motifs are, therefore, of considerable interest. Here, we develop a novel domino process wherein a cycloisomerization is followed by a 1,2-rearrangement via an oxazolonium ion to yield 4-alkenyloxazoles from an abundant β-chloro-N-benzyl prop4-Alkenyl- and 4-acyloxazoles represent important substructures across a diverse array of bioactive molecules. Practical methods to synthesize these motifs are, therefore, of considerable interest. Here, we develop a novel domino process wherein a cycloisomerization is followed by a 1,2-rearrangement via an oxazolonium ion to yield 4-alkenyloxazoles from an abundant β-chloro-N-benzyl propargylamin

Molecular size of riverine dissolved organic matter influences coastal phytoplankton communities

Dissolved organic matter (DOM) concentrations in many northern European freshwater systems have been increasing during the past decades. DOM affects the marine plankton community where rivers discharge into the sea. Large DOM molecules have been suggested to be more available to aquatic plankton than smaller ones due to their more recent origin in the degradation process. In this study, we investi

Tomographic methods in endovascular aortoiliac treatment

Endovascular treatment had developed rapidly and the procedures have increased in complexity. The demand of imaging excellence is imperative to perform these interventions. However both pre and postoperative investigations are performed by the use of advanced three-dimensional imaging, while the treatment itself relies on two-dimensional imaging. With the use of Cone Beam Computed Tomography (CBCT

Lighting of RoboCup Games

This paper describes the philosophy behind our lighting of the RoboCup«99 games in Stockholm 1999. It also gives relevant background in the theory of light, lighting and colour in order to motivate our design. It is our hope that it will be a valuable source of information for future RoboCup game organisers.

Nature's choice of genes controlling chronic inflammation.

Inflammation is a physiological response that may go uncontrolled and thereby develop in a chronic way. This seems to happen in many common diseases of autoimmune, degenerative, or allergic character. Rheumatoid arthritis (RA) is by definition a chronic disease with an autoimmune inflammatory attack on diarthrodial cartilaginous joints. The development of new treatment neutralizing cytokines invol

Smoking in pregnancy in relation to gender and adult mortality risk in offspring: the Helsingborg Birth Cohort Study.

Background: Smoking in pregnancy is a well-documented risk factor for fetal growth impairment and poor perinatal outcomes. Less is known about the long-term effects of maternal smoking on offspring mortality. Methods: A follow-up study in national registers on total mortality and cancer based on a birth cohort from Helsingborg, Sweden, including data on 2,010 sons and 1,982 daughters born to mothe

Geographic distribution of stroke incidence within an urban population : relations to socioeconomic circumstances and prevalence of cardiovascular risk factors

BACKGROUND AND PURPOSE: Geographic differences in stroke incidence indicate a potential for prevention. The present study from the city of Malmö, Sweden, sought to investigate whether incidence of stroke in residential areas is related to prevalence of cardiovascular risk factors and socioeconomic circumstances.METHODS: The Stroke Register in Malmö, Sweden, was used for retrieval of the 3540 patie

Characterization of a laccase gene from the white-rot fungus Trametes versicolor and structural features of basidiomycete laccases

A gene coding for the multi-copper phenol oxidase laccase has been isolated from the white-rot basidiomycete Trametes oersicolor. The gene, which is preceded by a TATA box and a pyrimidine-rich region, is predicted to contain ten introns. The mature translation product, preceded by a 22-residue signal peptide, should consist of 498 residues. Comparisons with Edman degradation data of peptides from

Country of birth and risk of hospitalization due to heart failure: a Swedish population-based cohort study.

To explore the relation between country of birth and risk of hospitalization due to heart failure (HF). All 40-89 year-old inhabitants in the city of Malmö, Sweden (n = 114,917, of whom 15.2% were born outside Sweden) were followed from November 1st, 1990 until December 31st, 2007. During a mean follow-up of 13.5 ± 5.3 years, a total of 7,640 individuals (47.4% men) were discharged from hospital w

The Grain family of stream ciphers

Abstract in UndeterminedA new family of stream ciphers, Grain, is proposed. Two variants, a 80-bit and a 128-bit variant are specified, denoted Grain and Grain-128 respectively. The designs target hardware environments where gate count, power consumption and memory are very limited. Both variants are based on two shift registers and a nonlinear output function. The ciphers also have the additional

Incidence of heart failure in an urban population

The overall aim of the thesis was to study heart failure (HF) in an urban population, with reference to immigrant status, biological, life style and socioeconomic risk factors. The thesis is based on four papers. Paper I included inhabitants (N=114,917; aged 40-89 years) in the city of Malmö, Sweden, followed from November 1st, 1990 until December 31st, 2007. Paper II-IV used the population-based

Äldres mobilitet i en landsbygdskommun. Tankar kring dagens och morgondagens resmöjligheter och boende.

Rapporten sammanfattar en studie om äldres mobilitet i en skånsk landsbygdskommun. Kommunen karakteriseras av en hög andel äldre, boendes i utkanten av en expansiv region, samt ett betydande inslag av personer som i senare medelåldern väljer att bosätta sig permanent i sina fritidshus. Fokusgruppsdiskussioner visar på skillnader och likheter i hur man ser på sina resmöjligheter både idag och i mor

Expression of Luteinizing Hormone Receptor in the Gastrointestinal Tract in Patients with and without Dysmotility.

Leuprolide is a gonadotropin-releasing hormone (GnRH) analog which has been shown to reduce symptoms in patients with irritable bowel syndrome (IBS) and chronic intestinal pseudo-obstruction (CIPO). The mechanism is not known, but one hypothesis is through down-modulation of luteinizing hormone (LH) secretion, a hormone whith antagonistic effect on gastrointestinal motility. However, presence of L

Vasovagal Syncope Related to Emotional Stress Predicts Coronary Events in Later Life

Background: The aim of the study was to assess whether history of vasovagal syncope (VVS) mediated by emotional (emotional VVS) or orthostatic stress (orthostatic VVS) is associated with an increased risk of cardiovascular (CV) events in later life. Methods: Retrospective analysis based on medical records of the consecutive 3,288 cardiologic outpatients (mean age, 61 +/- 12 years; 43% men). Result

Residual Detergent Detection Method for Nondestructive Cytocompatibility Evaluation of Decellularized Whole Lung Scaffolds

The development of reliable tissue engineering methods using decellularized cadaveric or donor lungs could potentially provide a new source of lung tissue. The vast majority of current lung decellularization protocols are detergent based and incompletely removed residual detergents may have a deleterious impact on subsequent scaffold recellularization. Detergent removal and quality control measure

Intra-Aneurysm Sac Pressure and Clinical Results after Endovascular Repair of Abdominal Aortic Aneurysms

Popular Abstract in Swedish Den vanligaste lokalisationen för bråck eller aneurysm på stora kroppspulsåderns (AAA) är i buken nedanför njurpulsådrorna. Mellan 3-6% av befolkningen över 65 års har detta och det är vanligare hos män jämfört med kvinnor (3:1). Majoriteten av bråcken är asymptomatiska och upptäcks som ett bifynd isamband med undersökning för mag eller ryggbesvär. Ca ¼ av bråcken debutAIM: The aim was to evaluate the results of endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms (AAA) in terms of intra-AAA pressure and clinical outcomes. METHODS AND RESULTS: 0.014-inch guide-wire-mounted tip-pressure sensors were used for direct intra-aneurysm sac pressure measurement (DISP) through translumbar puncture of the AAA. Mean Pressure Index was calculated (MPI) as the p