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The deactivation of a commercial Selective Catalytic Reduction (SCR) catalyst, of V2O5−WO3/TiO2 type, has been studied through comparisons with results from a full-scale biomass combustion plant to that with laboratory experiments. In the latter, the catalyst was exposed to KCl and K2SO4 by both wet impregnation with diluted salt solutions and deposition of generated submicrometer aerosol particle
The aquaporin PM28A is one of the major integral proteins in spinach leaf plasma membranes. Phosphorylation/dephosphorylation of Ser274 at the C-terminus and of Ser115 in the first cytoplasmic loop has been shown to regulate the water channel activity of PM28A when expressed in Xenopus oocytes. To understand the mechanisms of the phosphorylation-mediated gating of the channel the structure of PM28
Analytical formulas for the estimation of pressure and shear stresses due to friction on bent surfaces during the handling of fibers in the manufacture of industrial textiles and composites have been derived using the drive belt formula and Hertz contact stress relations. Experimentally measured at low speed, the forces and coefficients of friction give shear stresses in the same range as for the
Individual variation of the female sex pheromone signal in Agrotis segetum was determined by gas chromatographic analysis. The individuals varied extensively, both in absolute and relative amounts of the three major pheromone components; Z5-10:OAc, Z7-12:OAc and Z9-14:OAc. Within individuals there was a strong correspondence between the sex pheromone gland content and the signal actually emitted.
Popular Abstract in Swedish Epidemiologi är den vetenskap som studerar sjukdomars förekomst och spridning och hur detta varierar över tiden, mellan geografiska områden och mellan grupper av individer definierade i olika termer. I Malmö finns det mycket goda möjligheter att göra epidemiologiska studier av slaganfall (stroke). Dels finns ett register som följt strokeinsjuknandet sedan 1989. Dels harThe present thesis explored the epidemiology of stroke in Malmö, Sweden, an urban population of approximately 250000 inhabitants. Incidence of stroke in Malmö has been monitored since 1989. The National census investigation in 1990 was used to get information about the background population in the city. Previous studies of the seasonal and weekday variations in incidence of stroke have shown inco
The psychometric properties of a Swedish version of Haidt, McCauley and Rozin's (1994) Disgust Scale were studied. Confirmatory factor analysis of the original model with eight factors (food, animals, body products, sex, body envelope violations, death, hygiene, and magic) provided satisfactory fit to the data (N= 280), significantly better than to the alternative one-factor and five-factor models
We consider possible schemes for the resonance-enhanced two-photon ionization (RETPI) of Ne and Ar atoms under the action of bichromatic radiation of intense resonance lines of HI, HeI, and HeII in a radiation-rich astrophysical plasma. The ionization rate is comparable to or exceeds the recombination rate in rarified astrophysical plasma, which leads to the accumulation of singly ionized ions wit
A flow injection analysis (FIA) system for specific determination of L-glutamate in food samples based on a bi-enzymatic amplification system has been developed. The content of L-glutamate in the sample was amplified by cycling between L-glutamate dehydrogenase (GIDH) and a novel enzyme, D-phenylglycine aminotransferase (D-PhgAT). In this system, GIDH converts L-glutamate to 2-oxoglutarate with co
The fine-structure splittings of the inverted 5 and 62D states of potassium were measured by observing level-crossing signals at high magnetic fields. TheD levels were populated using step-wise excitations, employing two CW tunable dye lasers. For the fine-structure intervals dW we find: dW (5d)= -15,102.0 (5) MHz anddW(6d) = -7,965.8 (6) MHz. These values are about 100 times more accurate than pr
The influence of pH and surfactants during treatment of E-stage effluent was studied. Three tubular ultrafiltration membranes were used in the experiment. The flux of the three membranes was at its highest level at the normal, high pH, of the effluent. In this experiment the densest membrane showed the greatest flux decrease, while the most ouen membrane was either unaffected bv variations in ph o
Glutathione peroxidase (GSHPx) activity, and total and soluble selenium content were compared in five bovine and porcine organs. The highest GSHPx activity in porcine tissues was found in the liver (35.0 U/g), spleen (29.3 U/g) and kidney (27.3 U/g) with much lower values in the heart (1.8 U/g) and diaphragm (0.8 U/g). A different pattern with lower inter-organ variation in GSHPx activity was obse
The adsorption and decomposition of titanium tetrachloride (TiCl4) on W(110) were studied with high-resolution core level photoelectron spectroscopy. At least two stable intermediates are formed along the pathway to TiCl4 decomposition: TiCl4(a), which is stable up to 300 K, and TiCl3(a), which is stable up to 500 K. Successive adsorption at 80 K shows that the TiCl4() species forms in the presenc
Mechanisms of bacterial resistance to fluoroquinolones may be grouped into three principal categories: gene mutations of DNA topoisomerase II (GyrA or GyrB), DNA topoisomerase IV (ParC or ParE), decrease of outer membrane permeation and upregulation of multi-drug efflux pump (active efflux system).(1) Efflux pumps are transport proteins removing toxic substrates ( including virtually all classes o
Plasma exudation has been suggested to be an important component of the inflammatory response in asthma. Bradykinin elicits many of the features of asthma, including bronchoconstriction, cough, plasma exudation and mucus secretion. In an attempt to quantify local plasma exudation, we have employed a novel low-trauma technique with the aim of challenging and lavaging a central part of the bronchial
Popular Abstract in Swedish Äldre människor har ofta många hälsoproblem som t.ex. svårigheter att gå, se, höra, smärta och inkontinens men hur vanligt det är bland de allra äldsta är lite under¬sökt. De olika hälsoproblemen kan finnas samtidigt och i särskilda mönster men få studier har gjorts om detta. När ett hälsoproblem läggs till ett annat kommer det kanske till en punkt när behov av hjälp ärAim: The aim of this thesis was to investigate type, degree and patterns of health complaints, need for help and health-related quality of life across gender among persons aged 75?105 as well as to identify how patterns of health complaints, gender, age and socio-economic factors related to need for help with daily activities and quality of life (Paper I). The aim was also to investigate the preva
Popular Abstract in Swedish I denna avhandling behandlas modeller för simulering av läkemedelsfrisättning från enskilda filmdragerade pellets, samtidig frisättning från ett antal filmdragerade pellets, samt frisättning av läkemedel och/eller polymer från svällande polymertabletter. Modellerna är validerade mot experimentella data. Modellen för frisättning från filmdragerade pellets är validerad mIn this work, mathematical models have been developed describing drug release from film-coated reservoir systems as well as drug release and polymer dissolution from swelling and dissolving polymer tablets. The model derivation of both systems is based on a mechanistic approach. The model describing drug release from reservoir systems, i.e. from single, film-coated pellets, was validated against e
