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Popular Abstract in Swedish Kräftors påverkan på födovävar i dammar och sjöarThis thesis examines how freshwater crayfish affect community interactions in benthic food webs. I have mainly studied the influence of the introduced signal crayfish (Pacifastacus leniusculus) on littoral communities, but also the influence of the native noble crayfish (Astacus astacus). Overall, the results show that both crayfish species are omnivores having strong direct and indirect effects o

There is a vast amount of normative literature on change, which primarily focuses on how to manage change in an efficient and successful manner. What actually happens when management attempt to put their plans into practice is more seldomly investigated. Moreover, the prevailing literature on change primarily takes a management perspective. Other organizational members are usually treated as suppo

Popular Abstract in English From everyday experience we know that water and oil do not mix. In the scientific language we say they phase separate from each other. This happens because a water molecule and an oil molecule are inherently incompatible, the former exhibiting a ‘polar’ character and the latter a ‘non-polar’ one. Water and oil molecules are small, meaning that they are made up of only The subject of this thesis is experimental investigation of self-assembly in solvent-free (ionic) macromolecular systems that contain block copolymer chains as the basic constituent component in combination with low molecular weight amphiphiles. In particular, especial attention is paid to study thoroughly a new class of block copolymer-based ionic supramolecules, named as Linear-b-AmphComb, that

Vi möter våld i någon form dagligen, om inte som ”offer” eller ”förövare”, så när vi läser tidningen, tittar på tv eller går på bio. Hela världen kan förefalla organiserad med utgångspunkt i våld. Med våld upprätthålls stater, grupphierarkier och individuella maktpositioner. Merparten av våldsutövarna är män liksom hälften av offren. Den andra hälften av offren är kvinnor och barn. Det här mönstre

Proton Exchange Membrane (PEM) fuel cell systems have been studied as the alternatives of the internal combustion engine systems. However, these systems are not appearing in daily life yet, due to the high cost, shortage of infrastructure, technical issues, etc. Concerning technical issues, water/thermal management is a critical one to keep high proton conductivity in the electrolyte membrane for

Chiral building blocks are needed for the production of drugs and fine chemicals, which requires the use of several synthetic routes to produce a specific enantiomer of interest. One promising approach to introduce chirality into molecules is the stereo-selective whole cell bioreduction of carbonyl compounds or ketones to the corresponding chiral alcohols. The aim of this thesis was to develop ef

This paper introduces the design of a new multiphase clock generator with no feedback loop. A single-stage direct interpolation architecture is proposed. A 1/4 frequency divider and a short-circuit current suppression interpolator are developed to achieve the precise interpolation. The circuit has been fabricated in a standard 0.35 μm, 3.3 V CMOS process. The multiphase clock generator can operate

A variant of the compatrison theory of metaphor is put forward. The main points are (a) a theory of metaphor belongs to semantics, not pragmatics, (b) a metaphorical statement is a similarity statement, usually comparing descriptions of objects, (c) a metaphor is a constellation of words connected by a certain kind of relation - the metaphorical link, (d) metaphors are not necessarily asymmetric,

An edition of the consecration sermons in Gothenburg Cathedral 1633 by Superintendent Andreas Johannis Prytz, with introductory comments. The first sermon deals with the need for Church buildings, the second with the consecration of a new Church.