Filetype
This paper presents an existence and stability theory for gravity-capillary solitary waves on the surface of a body of water of infinite depth. Exploiting a classical variational principle, we prove the existence of a minimiser of the wave energy epsilon subject to the constraint I = root 2 mu, where I is the wave momentum and 0 < mu << 1. Since epsilon and I are both conserved quantities a standa
An improved synthetic route to the bicyclo[2.2.2]octane-2,6-diol ligands (2,6-BODOLS) allowed an increased structural variation of the ligand side-arm. The addition of aromatic or vinylic Grignard reagents to hydroxyketone 1 was highly selective and ligands 3f-3I were isolated in 84-97% yield. The addition of alkyl Grignard reagents containing beta-hydrogens resulted in lower yields (13-71%) due t
Most climate change scenarios predict that the variability of weather conditions will increase in coming decades. Hence, the frequency and intensity of freeze-thaw cycles in high-latitude regions are likely to increase, with concomitant effect on soil carbon biogeochemistry and associated microbial processes. To address this issue we sampled riparian soil from a Swedish boreal forest and applied t
Background: The most common intrarenal cause for acute kidney injury/renal failure is tubular damage. The kidney tubules are arranged as compartments of cellular mosaics to perform their functions, and at rest almost a fifth of the human ATP consumption is allotted to the reabsorption of substances from the filtrate, rendering especially the proximal tubules highly sensitive to oxygen and/or nutri
Nitrous oxide (N2O) is a potent greenhouse gas and of special concern in wastewater treatment. It is formed in biological wastewater treatment under both aerobic and anaerobic conditions. A major reason for high N2O emissions is low oxygen concentration during nitrification. In this full-scale study of N2O emissions from a sequencing batch reactor for treating digester supernatant, the oxygen conc
It is not fully understood how much growth stresses affect the final quality of solid timber products in terms of, e.g. shape stability. It is, for example, difficult to predict the internal growth stress field within the tree stem. Growth stresses are progressively generated during the tree growth and they are highly influenced by climate, biologic and material-related factors. To increase the kn
Galiellalactone (GL) is a fungal metabolite that presents antitumor activities on prostate cancer in vitro and in vivo. In this study we show that GL induced cell cycle arrest in G2/M phase, caspase-dependent apoptosis and also affected the microtubule organization and migration ability in DU145 cells. GL did not induce double strand DNA break but activated the ATR and ATM-mediated DNA damage resp
It is important to provide scientific knowledge of wheelchairs as occupant-protecting seats in motor vehicles. This study aimed at examining the situation in Special Transportation Services (STS), an important mode of transport for wheelchair users in Sweden. The perceived safety levels were assessed and examined, and extensive field experience was gained. During the study in three Swedish cities
This paper provides an anthropological definition of "security" to discuss the nature of international intervention in the Balkans. Using examples from the author's development work in Albania, it describes how the international project implementation carried on by development NGOs interacts with local customary laws such as the Albanian 'kanun'. Projectization has created new project elites, but
Popular Abstract in Swedish Floran i ekplanteringar ? en effekt av miljö, spridning eller markhistoria? Bakgrund Europas befolkning ökande kraftigt efter industrialismens genombrott och som en följd av detta ökade behovet av åkermark för att försörja den växande skaran människor med mat. Mer och mer av den lövskog som tidigare täckte stora delar av norra Europa avverkades för att bli åkermark, In Europe, only small fragments of deciduous woodlands remain intact and species dependent on this ecosystem have declined. In southern Sweden, a shifting trend during the 20th century, with more afforestations on former arable land, resulted in new oak stands. These new stand are either on former arable fields or on continuously forested land. This thesis has its emphasis on colonization patterns
The cannabinoid 1 receptor (CB1R) has a well-established role in appetite regulation. Central CB1R antagonists, notably rimonabant, induced weight loss and improved the metabolic profile in obese individuals, but were discontinued due to psychiatric side-effects. The CB1R is also expressed peripherally, where its effects include promotion of liver fat accumulation, which consumes ATP. Type 2 diabe
Tidigare forskning om samverkan visar att samarbete innefattar problem och konflikter. Syftet med denna studie är att istället beskriva mer framgångsrik samverkan även om denna utspelas under kortare interaktionsfrekvenser. I boken diskuteras forskning som analyserat framgångsfaktorer men framförallt analyseras ett eget empiriskt material med fokus på hur och när aktörerna inom ungdomsvården framsPrevious collaboration research shows that problems and conflicts sometimes arise as a part of collaboration. This book analyzes successful cooperation unfolding during shorter interaction sequences. In this study I endeavour to describe the contributing factors that are necessary to achieve the phenomenon of a successful collaboration. I do this partially with help from studies published in previ
Popular Abstract in Swedish Min avhandling består av sex delarbeten som redovisar olika undersökningar av ett värmestabilt enzym (xylanas). Detta enzym är isolerat från en bakterie (Rhodothermus marinus) som lever i varma källor (vid 55-77 °C) och enzymet förväntas alltså fungera vid dessa temperaturer. Enzymets uppgift i bakterien är att förse den med lagom långa kolhydratmolekyler som bakterien A gene encoding a multidomain xylanase from the thermophilic bacterium Rhodothermus marinus has been cloned, sequenced and produced in Escherichia coli . The gene product was found to be a 109 kDa protein consisting of five domains. The catalytic domain and the two polysaccharide binding domains (PBD, previously called carbohydrate binding domains) have been cloned and produced separately for func
The aerodynamics and kinematics behind the flight of animals are relatively unknown. Although animal flight has been studied for several hundreds of years, it is only in recent time that we have the technical abilities to study the mechanistic basis of animal flight. This thesis represents an attempt to widen the knowledge about animal flight by studying one of the most advanced flyers of the natu
