Sökresultat

A comprehensive study of the photophysical behavior of poly(acrylic acids) randomly labeled with pyrene using steady-state and time-resolved fluorescence spectroscopy is presented. The influence of external factors, such as different solvents and pH in the aqueous solution, on the polymer photophysics has been investigated. These factors induce major changes in the polymer conformation, which are

Popular Abstract in Swedish (Populärvetenskaplig sammanfattning) I Skandinavien drabbas 1 av 3 000 människor av en ärftlig näthinnedegeneration som ofta leder till en grav synnedsättning och inte sällan till blindhet. Orsaken är att näthinnans ljuskänsliga celler långsamt förtvinar. Vi kan ännu inte bota dessa sjukdomar. Det finns många olika varianter av ärftlig näthinnedegeneration, vilket gör The purpose of the study was to characterise the phenotype with emphasis on electroretinography in four different types of hereditary retinal degeneration and to correlate it to a genotype when possible. Two methods were used: full-field electroretinography for objective assessment of retinal function and mutation screening of blood samples for detection of gene alterations. Electroretinograms fro

Eddy flux tower measurements, ground-based reflectance measurements, regionally modeled data, and data from the Moderate Resolution Imaging Spectroradiometer (MODIS) were used in this study of an ombrotrophic bog in southern Sweden. Linear regression analysis was used to investigate how the fraction of absorbed photosynthetically active radiation (FAPAR), light-use efficiency (epsiv), and gross pr

Popular Abstract in Swedish Vad bestämmer om en cell skall dö? En viktig, avgörande faktor är vilken signal cellen får från omgivningen. Den måste nämligen vara mycket öppen för intryck och beredd att tjänstvilligt dö på begäran, eftersom hela den flercelliga varelsen beror av att det fungerar så. Det måste förstås också finnas signaler utifrån som talar om att det är dags att kämpa, att överleva Eicosanoids are known to be involved in many different aspects of eukaryotic physiology and pathology. Notably, over the past 10 years much attention has been given to cyclooxygenase-2 (COX-2) due to its involvement in colorectal cancer. Less is known about the other major branch of arachidonic acid metabolism, namely the lipoxygenases (LO). The cysteinyl leukotrienes (CysLTs) are a family of met

Even if outsourcing is a well-researched phenomenon, it can be stated that evaluation studies on IS outsourcing relationships are scarce. From a description of two IS outsourcing relationship cases, a set of les-sons learned are presented. A boundary spanning perspective is then used when evaluating these lessons learned in the client-supplier outsourcing relationships and thereby adding a “new” t

Popular Abstract in Swedish Intag av födoämnesantigen resulterar normalt i induktion av oral tolerans, men klinisk och immunologisk betydelse av kortvarig neonatal exponering för komjölksproteiner är inte klarlagt. Syftet med detta arbete var att studera prospektivt effekten av olika uppfödningsregimen under de tre första levnadsdagarna. Påverkan på makromolekylär absorption, antikropps produktionThe aim of this work was to study prospectively the effects of different feeding regimens during the first three days of life. A group of 129 infants were randomly assigned at birth to one of three feeding regimens: human milk (HM), cow's milk formula (CMF), or a casein hydrolysate formula (CHF). The formula-fed infants received no human milk until the fourth day of life, after which all infants w

Abstract in Spanish Al tiempo que el mundo se ha vuelto más comprimido a través de la articulación de actores transnacionales o transportadores, como los expertos itinerantes, las organizaciones internacionales y los aparentes cuerpos globalizados de conocimiento, también los políticos y académicos chinos se han hecho más globales en varios campos de la acción social, incluida la educación. La pol

The tender fruits of the leguminous plant Canavalia gladiata (Sinhala awara, sword beans) are consumed in Sri Lanka as a green vegetable. The mature seeds are also utilized in a variety of ways but not very frequently, in spite of desirable agronomical properties, for cultivation in the country. This study was performed with the intention of developing methods for increasing utilization of the swo

This is the first annual report for the Swedish Butterfly Monitoring Scheme, a new national monitoring programme coordinated by Lund University for the Swedish Environmental Protection Agency. The programme was initiated in 2010, and is a partnership between the Entomological Society of Sweden, the Swedish Environmental Protection Agency, Lund University, the Swedish University of Agricultural Sci