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Structure and activity of the bacterial community in the rhizosphere of different plant species and the effect of arbuscular mycorrhizal colonisation

The aim of this study was to determine if arbuscular mycorrhizal (AM) colonisation influences rhizosphere bacteria differently depending on plant species. Thus, the effect of AM colonisation (Glomus intraradices) on rhizosphere bacteria of subterranean clover, cucumber, leek and maize was studied. The bacterial activity was measured as thymidine or leucine incorporation and bacterial numbers as co

Kapitalbildning i svensk industri 1870-1930

Popular Abstract in Swedish Betydelsen av fysiskt kapital är något som ofta understryks i allmänna ordalag i den ekonomisk-historiska litteraturen. Väldigt få undersökningar har däremot försökt att kvantifiera och analysera det fysiska kapitalets betydelse för ekonomisk tillväxt under den svenska industrialiseringsprocessen. Det gäller i synnerhet på branschnivå. En sådan studie genomförs därför iThe significance of physical capital is often mentioned in general terms in economic history literature. In this study the amount of physical capital is calculated and its significance for industrial growth is analysed for the period 1870-1930. The largest and most important part of this thesis consists of constructions of capital stocks for industry as a whole and on the branch level. These cons

Heterointerfaces in III-V semiconductor nanowhiskers

We have investigated heterostructures formed within Vapor-Liquid-Solid grown III-V nanowhiskers. The growth conditions that are typical for chemical beam epitaxy facilitate the creation of atomically abrupt interfaces. In this paper we investigate the properties of heterostructure interfaces including switching of either the column-V material (As, P) or the column-III material (In, Ga).

Relationship of airway responsiveness to agents causing bronchoconstriction and cough in sensitized guinea-pigs

The relationship between airway responsiveness to bronchoconstrictor- and cough-inducing stimuli has been examined in Ascaris suum-sensitized conscious guinea-pigs. Guinea-pigs were sensitized to Ascaris suum [4000 PNU and 100 mg Al(OH)3 i.p. on days 1 and 7] and then challenged with aerosolized antigen on days 21, 28 and 35. At day 35, antigen-exposure produced an early bronchoconstrictor respons

Binuclear ruthenium-manganese complexes as simple artificial models for photosystem II in green plants

As part of a project aimed at developing models for photosystem II (PSII) in green plants, we have prepared a series of model compounds (7, 8, and 13). In these compounds, a photosensitizer, ruthenium(II) tris(bipyridyl) complex (to mimic the function of P-680 in PSII), was covalently linked to a manganese(II) ion through different bridging ligands. The structures of the compounds were characteriz

Differences in physical workload, psychosocial factors and musculoskeletal disorders between two groups of female hospital cleaners with two diverse organizational models

Objectives To clarify if differences in the physical workload, the psychosocial factors and in musculoskeletal disorders can be attributed to work organizational factors. Methods The physical workload (muscular activity of m. trapezius, positions and movements of the head, upper arms and wrists and heart rate) was assessed in 24 female hospital cleaners working in a traditional work organization (

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Detta är ett kapitel i en volym vars syfte är att studera det fantastiska i litteratur från olika delar av den fransktalande världen. Mitt bidrag handlar om fallet Patrick Chamoiseau som ett exempel på modern användning av det fantastiska i västindisk litteratur.This is a chapter in a volume whose aim is to study the fantastic in literature from different parts of the French speaking world. My contribution deals with the case of Patrick Chamoiseau as an example of the modern use of the fantastic in Carribean literature.

Deletion of a lectin gene does not affect the phenotype of the nematode-trapping fungus Arthrobotrys oligospora

A number of filamentous fungi are known to produce high levels of saline-soluble and low-molecular-mass lectins. The function of these proteins are not clear but it has been proposed that they are involved in storage of nutrients, development, recognition of other organisms, and defense reactions. A gene encoding such a lectin (AOL) was deleted in the nematode-trapping fungus Arthrobotrys oligospo

Large Eddy Simulation of Turbulent Swirling Flows and Turbulent Premixed Combustion

With the increasing concerns about our environment and human health, more and more stringent emission limits have been specified. These adopted and still coming emission limits require and promote more accurate, less experiential methods to design and develop the combustors. In this thesis, computation fluid dynamics (CFD) technology, based on large eddy simulation (LES) and level set G-equation m

Förändringar i fysisk aktivitet hos en grupp studenter under en tremånadersperiod

Syftet med denna studie var att beskriva förändringar i det fysiska aktivitetsmönstret – ökad, minskad eller oförändrad fysisk aktivitet – hos en grupp studenter under en tremånadersperiod. I studien deltog 155 studenter. Två av de formulär som ingår i den transteoretiska modellen (förändringsstadier och beteendestrategier) användes. Slutsatser: • Om studierna planeras bättre skulle fler studente