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Gypsum calcination in superheated steam is investigated. It is shown that superheated steam positively influences the formation of hemihydrate and avoids formation of anhydrite. By measuring the specific surface area the products are shown mainly to consist of alpha-hemihydrate. By recovering the heat of vaporization a specific energy use of 379 kJ/kg dihydrate can be obtained. This is substantial
Thirty-two Norway spruce [Picea abies (L.) Karst.] and Scots pine (Pinus sylvestris L.) stands in southern Sweden were studied for a period of 12 years to evaluate acidification-induced chemical changes in the soil. Soil, at 20-30 cm depth in the mineral layer, was sampled three times during this period (1988, 1993 and 1999). The results show that pH(BaCl2) in mineral soil decreased by, on average
Recension av Magnus Karavelli; Blågul framtid. En essä om nationen och det svenska.
The effect of ethanol exposure on muscarinic receptor-stimulated expression of c-fos was investigated in SH-SY5Y cells. Four days of ethanol exposure enhanced carbachol-stimulated c-fos mRNA expression, analyzed with Northern blot, and Fos/AP-1 binding activity, measured with gel mobility super shift assay. Pre-incubation with muscarinic antagonists or the protein kinase C inhibitor GF109203X demo
The aim of this project is to study the fungal growth habits on building materials as a function of humidity, temperature and other environmental parameters. The method of calorimetry is used as a way to quantify fungal activity on building materials. Calorimetry is a general, but sensitive method that can continuously monitor biological processes as a function of environmental conditions. In this
Purpose. To provide an overview of clinical research on the use of biochemical serum markers for traumatic brain injury (TRI) in the evaluation of patients with mild head injuries (MHI). Methods. The MEDLINE database was searched for publications on biochemical serum markers of TBI until August 2002. Clinical studies addressing their use in MHI were reviewed. Results. Desirable characteristics for
We present the results of angle-resolved photoemission studies on the (0 0 0 (1) over bar) (N-polar) surface of bulk gallium nitride crystals. The bulk and surface band Structure was investigated along Gamma-A and Gamma-K-M directions on the surface with (1 x 1) symmetry. The sets of spectra were obtained in normal and off-normal emission for the surface prepared by Ar+ ion sputtering and annealin
Wilhelm Agrell har på grundval av sin analys av Venonas material i sin bok Venona dragit slutsatserna att Orestes var Böhm och att de sovjetiska underrättelseorganen hade kunskap om Wallenbergs relation med War Refugee Board. På grundval av SOU:18 2003 vet vi att Wallenberg rapporterade till Böhm om tyska planer på separatfred med västmakterna. Det är ett välbekant faktum, att Josef Stalin dels ka
Inclusive fitness benefits have been suggested to be a major selective force behind the evolution of cooperative breeding. We investigated the fitness benefits selecting for cooperative breeding in the Seychelles warbler, Acroccphalus sechellensis. A microsatellite-based genotyping method was used to determine the relatedness of subordinates to group offspring in an isolated population of Seychell
Acquired clonal chromosome aberrations, closely associated with leukemogenesis, are found in many hematologic malignancies. Although the balanced rearrangements, such as translocations and inversions, are the ones most commonly thought of in the context of leukemias, gains of chromosomes ? e.g.., trisomies ? are also frequent. Little is known about the biologic outcome, the pathogenetic significan
