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The effect of body size on spatial resource competition and reproductive isolation was examined in a sister species pair of subtidal triplefin fishes (F. Tripterygiidae) in New Zealand. Ruanoho decemdigitatus and Ruanoho whero have overlapping sympatric distributions and differ in body size, attaining a total length of 12 cm and 9 cm, respectively. R. decemdigitatus was most commonly found in shel
Bracon hebetor is a larval ectoparasitoid that utilizes several pests belonging to the family Pyralidae (Lepidoptera) as hosts. In the present study, we analyzed the kairomonal response of this wasp to the male-produced sex pheromone of a host, the greater wax moth Galleria mellonella, an economically important pest of honeybees, Apis mellifera. Coupled gas chromatography-electroantennographic det
Popular Abstract in English Proteins are molecular machines of the human body which regulate all life sustaining processes such as energy production, communication, transport of essential molecules, defense against microbes, etc. They are built by small molecular units called amino acids, bound together like pearls on a necklace. Each amino acid consists of a common part and a unique side chain. TAnisotropic protein interactions have a strong orientation dependence resulting from an uneven distribution of charged and hydrophobic residues on the protein surface. They play an important role in protein behaviors such as protein association, surface adsorption and phase separation. In this thesis, we have studied the effect of anisotropic interactions on the behavior of various proteins mainly
Purpose of this paper The outcome of product development, i.e. the product design, together with the packaging solution, has a great impact on the logistics performance of supply chains. Despite this, packaging has traditionally been given a very modest role in the product development literature as well as in the logistics literature. The aim of this paper is to show how logistics performance an
Popular Abstract in Swedish Betydelsen av tryckinducerad syrgastransport hos övervattensväxter Min avhandling handlar om vikten av att syrgas transporteras till rötter och rhizom hos övervattensväxter som bladvass, kaveldun och säv. Syrgas behövs för cellandningen i alla växtdelar, och i synnerhet i rötterna då de växer fort och har hög ämnesomsättning. Övervattensväxter har rötterna i vattendränThis thesis examines factors regulating growth and distribution of emergent plants with focus on effects of oxygen supply to the roots. Greenhouse experiments revealed that P. australis acclimatizes to specific water depths with phenotypic plasticity. These phenotypic responses act to increase growth at specific water depths but may result in decreased tolerance to changed water depth. Oxygen nee
Two 8-year-old Pinus radiata trees growing in a dry-land plantation forest were subjected to a partial shading treatment for 2 years in order to investigate the responses of photosynthesis and tree growth to a long-term reduction in illuminated leaf area. The lower 60% of the crown of shaded trees was surrounded by 50% neutral density shade cloth. This reduced radiation absorption by 13% for the t
Popular Abstract in Swedish Papillomvirus infekterar ett brett spektrum av ryggradsdjur, såsom människa, olika ap-arter, ko, älg, elefant, ren och bofink. Dessa virus kan ge så vitt skilda symptom som cancer och vårtor. De indelas efter vilken art de infekterar, och inom arterna efter skillnad i DNA-sekvens mellan olika isolat (typer). Hittills har 92 humana papillomvirus (HPV) typer beskrivits, oPapillomaviruses are a diverse, epitheliotropic group of viruses. Some genotypes are the main cause of anogenital cancer in humans; others can induce skin lesions. In order to investigate the occurrence of subclinical skin infections with human papillomavirus (HPV), a pair of degenerate primers (FAP59/64) was designed. Moist cotton-tipped swabs were used as a gentle method of sample collection. Di
The goal of these studies has been to elucidate the biological relevance of post-translational modifications in the context of a living organism. The model system used is photoreceptor differentiation during development of the compound eye in the fruit fly Drosophila melanogaster. Important signal transduction pathways in this process consist of receptor tyrosine kinases (RTKs) coupled to a mitoge
Popular Abstract in Swedish Zeoliter är en grupp av kisel-aluminium-föreningar, med karaktäristiska kanalsystem inuti strukturen, som har fått stor användning inom många områden inom teknik och vetenskap. Zeoliternas viktigaste användningsområden är som torkmedel, som molekylsiktar, som jonbytare och som katalysatorer. Användningen av naturligt förekommande zeoliter är relativt liten jämfört med aA highly dealuminated form of zeolite FAU, ultra-stable zeolite Y (USY), was used as an adsorbent matrix in the purification of proteins. Undesired proteins were removed from a crude preparation by adsorption on USY, increasing the purity of an unadsorbed protein (horse radish peroxidase), or the protein of interest was adsorbed on the zeolite and subsequently eluted through changes in the solutio
Popular Abstract in Swedish Faktor H är den viktigaste cirkulerande hämmare av den alternativa komplementvägen. Den fungerar som co-faktor för faktor-I medierad C3b nedbrytning, hindrar bildning av C3bBb konvertas och främjar dess nedbrytning. Genom att skilja mellan kroppens egna och främmande celler kan faktor H inhibera komplementmedierad värdcellsskada. Mutationer i faktor H har hittats hos paFactor H is the main fluid phase regulator of the alternative pathway of complement. Factor H acts as a co-factor for factor I-mediated C3b degradation, inhibits the formation of the C3bBb convertase and accelerates its decay. By discriminating between host and foreign cells, factor H inhibits complement-mediated injury to host cells. Factor H mutations have been associated with atypical hemolytic
A generic, fast, sensitive and new type of flow immunosensor has been developed. The basis is a monolithic porous poly(glycidyl methacrylate-co-trimethylolpropane trimethacrylate) polymer disc modified with protein G, placed in a fountain type flow cell compartment, in close proximity to a photomultiplier tube (PMT). Analyte and HRP labelled analyte derivative (tracer) compete for anti-analyte ant
In chlorophyll biosynthesis, insertion of Mg2+ into protoporphyrin IX is catalysed in an ATP-dependent reaction by a three-subunit (BchI, BchD and BchH) enzyme magnesium chelatase. In this work we present the three-dimensional structure of the ATP-binding subunit BchI. The structure has been solved by the multiple wavelength anomalous dispersion method and refined at 2.1 A resolution to the crysta
An ability to interact with plasminogen or plasmin could provide micro-organisms with a mechanism for invasion. Thus, group A, C and G streptococci secrete streptokinase which binds and activates plasminogen. Some streptococci also express surface structures which bind plasminogen without causing its activation. Plasminogen-binding surface proteins were extracted from one group C and one group G s
Background: Little is known regarding vitamin D deficiency (VDD) in African populations and in tuberculosis (TB) patients. VDD has been shown to be associated with TB. Objective: We aimed to compare the degree of vitamin D insufficiency (VDI) and VDD in TB patients and healthy adult controls in a West African population. Design: An unmatched case-control study was performed at a Demographic Survei
Context. Manganese is an iron-peak element and although the nucleosynthesis path that leads to its formation is fairly well understood, it remains unclear which objects, SN II and/or SN Ia, that contribute the majority of Mn to the interstellar medium. It also remains unclear to which extent the supernovae Mn yields depend on the metallicity of the progenitor star or not. Aims. By using a well stu
The Broad-billed Sandpiper Limicola f. falcinellus is a little studied European wader species with unfavourable conservation status. We describe the migration of the Broad-billed Sandpiper at Ottenby, southeast Sweden, from 1950-2000 using data from ringing activities and field observations. Numbers of ringed and observed Broad-billed Sandpipers varied considerably between years. There was no tren
Oxygen consumption, lactate production and tissue contents of ATP, phosphocreatine (PCr) and lactate were measured following readdition of K+ to K+-depleted rat portal veins, in order to study the energy turnover associated with Na+/K+ pumping. During incubation in K+-free medium at 37 degrees C spontaneous contractions disappeared in 10-20 min. Readdition of K+ (5.9 mM) after 40 min K+-free incub
