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Vertebrate sex ratios are notorious for their lack of fit to theoretical models, both with respect to the direction and the magnitude of the sex ratio adjustment. The reasons for this are likely to be linked to simpilfying assumptions regarding vertebrate life histories. More specifically, if the sex ratio adjustment itself influences offspring fitness, due to sex-specific interactions among offsp

Initial investigations were directed at studying the interaction between polyamines and various glycosaminoglycans (GAGs). The polyamine spermine displayed binding to dermatan sulphate (DS) and heparan sulphate (HS) with similar (Kd, 3.9 x 10-4 M) and higher (Kd, 0.37 x 10-6 M) affinity, respectively, than to DNA. Antiproliferative spermine-binding DS fragments (tetra- to decasaccharides), and aff

Abstract is not available

Combining the strengths of an advanced mathematical model of human physiology and a thermal manikin is a new paradigm for simulating thermal behaviour of humans. However, the forerunners of such adaptive manikins showed some substantial limitations. This project aimed to determine the opportunities and constraints of the existing thermal manikins when dynamically controlled by a mathematical model

Popular Abstract in Swedish Strålbehandling är en av de vanligaste behandlingarna mot cancer. Hälften av alla behandlingar syftar till att bota patienten från sjukdomen, men strålbehandling är även en mycket effektiv behandling för att lindra smärta och andra symptom för patienter med en obotlig cancer. Förberedelse inför strålbehandling är en komplicerad procedur, som innefattar många olika teknPreparation for radiotherapy is a complex procedure that involves many different technologies and groups of professionals. The rapid development and introduction of new technologies throughout the last decade have made it possible to deliver highly conformal, individually-shaped dose distributions with high accuracy. However, there is widespread concern that current quality assurance practices hav

Biological diversity encompasses the genetic diversity within each species, the range of species in a given ecosystem e.g. species diversity and the diversity of ecosystems across an entire region (Primack, 2000). At present 1 per cent of the world’s described species are threatened with extinction. The most pervasive and overriding threat is habitat loss and degradation due to human activity such

What kind of indispensable cognitive ability is needed for intelligence, sociability, communication, and technology to emerge on a habitable planet? My answer is simple: intersubjectivity. I stress the significance of intersubjectivity, of shared cognition, for extraterrestrial intelligence and interstellar communication, and argue that it is in fact crucial and indispensable for any successful in

This thesis is divided into two parts in which two different aspects of the Large Hadron Collider (LHC) Project are discussed. The first part describes the design of a transition radiation tracker (TRT) for the inner detector in ATLAS. In particular, the barrel part was studied in detail. The barrel TRT consists of 52 544 1.5-m-long proportional tubes (straws), parallel to the beam axis and each

Proton exchange membrane fuel cell (PEMFC) systems have been investigated as alternative power sources for the stationary and automotive applications. However, they do not appear on the market yet. One of the main reasons is the difficulty of the water/thermal management in the system. Several water recovery schemes have been proposed to overcome this difficulty and to simplify the system configur

Psouni and Apetroaia (2010) have recently introduced the Secure Base Script Test,SBST, for middle childhood. Based on Waters and Rodrigues-Doolabh’s (2004)Narrative Script Assessment for assessing secure base script knowledge in adults,Psouni and Apetroaia’s method is a narrative task in which children create short narratives by making use of four prompt word outlines that loosely suggest prototyp

The purpose of this study was to increase the understanding of the importance of work and professional identity to young adult female students’ identity formation. The questions that follow in this thesis were what young adult women think of the importance of their education and expectations about their future work, the importance of the salary and finally the possibility to combine work and famil

This report is comparing about ten different routes for transportation of dangerous goods to the harbour area in the city of Helsingborg in southern of Sweden. This is done by the use of three different methods for risk analysis. The report is pointing out one of the alternative routes as the best regarding societal risk and individual risk. A comparison is also made between the three different me

The aim of this report is to present conclusions about factors of great importance for the evacuation efficiency from underground spaces such as road or train tunnels. Quantified information about the duration of different stages in the evacuation process is presented as well as conclusions about means to fasten the evacuation process. Of special interest from a risk management perspective is the