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Biogas production from crop residues on a farm-scale level: is it economically feasible under conditions in Sweden?

Anaerobic digestion would enable the energy potential of agricultural crop residues such as sugar beet tops and straw to be harnessed. Sweden is so spread out that full utilisation of this potential by centralised slurry-based technology is difficult. It appears that simple but effective high-solids reactor systems have a better chance of being economically viable on a farm-scale level (50500 kW).

Mångtydigheternas klarhet. Om ironier hos Torgny Lindgren från Skolbagateller till Hummelhonung

Popular Abstract in Swedish Torgny Lindgren är en av våra mest framstående diktare. Han har som få kunnat förena berättarglädje, språklig skönhet, och djupsinne på ett sätt som har lockat läsare ur alla kretsar. Lindgrens berättelser är emellertid på ett gåtfullt sätt ofta både brutala och djupt allvarliga, samtidigt som de är både vackra och komiska. Ofta går också döden hand i hand med en kärlekThis thesis addresses the work of the Swedish author, Torgny Lindgren (born 1938). Its main focus lies on the all-pervading irony in his work. The use of irony is seen as a unifying trait in Lindgren’s authorship. The development of more complex ironies during the years of his authorship is seen as an effect of his authorship’s thematic development, moving from political satire to existential, eth

Lunnomidinium scaniense Lindstrom, gen. et sp nov., a new suessiacean dinoflagellate cyst from the Rhaetian of Scania, southern Sweden

The dinoflagellate cyst Lunnomidinium scaniense gen. et sp. nov. is present in the lower part of a thin sequence of Rhaetian sedimentary rocks exposed in the Lunnom Coal and Clay Pit in NW Scania, southern Sweden! It occurs in diverse, Rhaetian palynomorph assemblages, dominated by spores and pollen, but with rare specimens of the dinoflagellate cysts Rhaetogonyaulax rhaetica (Sarjeant) Loeblich a

Nuclear transparency with the gamma n ->pi(-)p process in He-4

We have measured the nuclear transparency of the fundamental process gamman-->pi(-)p in He-4. These measurements were performed at Jefferson Lab in the photon energy range of 1.6-4.5 GeV and at theta(cm)(pi)=70degrees and 90degrees. These measurements are the first of their kind in the study of nuclear transparency in photoreactions. They also provide a benchmark test of Glauber calculations based

Violence Prevention and Conflict Resolution: A Study of Peace Education in Grades 4-6.

Popular Abstract in Swedish Att förebygga våld och hantera konflikter konstruktivt: En studie i fredsundervisning i årskurs 4–6.The objectives of the study were (1) to contribute to development of a theoretical basis for teaching violence prevention and conflict resolution, connecting the micro (interpersonal and intergroup) and macro (national, international and transnational) levels; and (2) to contribute to development of teaching methods with the aim of giving children skills in handling conflicts constructively. The

Regularization of phase contrast magnetic resonance images using optical flow and smoothness constraints

This paper presents a post processing strategy for myocardial velocity fields obtained by phase contrast magnetic resonance imaging. Such data can be used to track cardiac motion and to calculate strain. The method combines data regularization with optical flow estimation to overcome the partial volume effect in the image acquisition. Validation is performed both in vitro and in vivo and it is sho

A clinical evaluation of the Zygoma fixture: One year of follow-up at 16 clinics

Purpose. To evaluate treatment outcome with Zygoma fixtures (Nobel Biocare, Goteborg, Sweden) with regard to fixture survival, patient satisfaction, and function of prosthesis replacement. Materials and Methods: The treatment outcome of 76 patients treated with 145 Zygoma fixtures at 16 centers was evaluated. Patient's and dentist's evaluations of the functional and aesthetic outcome of the treatm

Number of patients potentially eligible for proton therapy

A group of Swedish radiation oncologists and hospital physicists have estimated the number of patients in Sweden suitable for proton beam therapy in a facility where one of the principal aims is to facilitate randomized and other studies in which the advantage of protons can be shown and the magnitude of the differences compared with optimally administered conventional radiation treatment, also in

Structural studies of thymidine kinases from Bacillus anthracis and Bacillus cereus provide insights into quaternary structure and conformational changes upon substrate binding

Thymidine kinase (TK) is the key enzyme in salvaging thymidine to produce thymidine monophosphate. Owing to its ability to phosphorylate nucleoside analogue prodrugs, TK has gained attention as a rate-limiting drug activator. We describe the structures of two bacterial TKs, one from the pathogen Bacillus anthracis in complex with the substrate dT, and the second from the food-poison-associated Bac

Usefulness and pitfalls of planar gamma-scintigraphy for measuring aerosol deposition in the lungs: a Monte Carlo investigation

Planar gamma-scintigraphy is often used to quantify pulmonary deposition patterns from aerosol inhalers. The results are quite different from those obtained using 3-dimensional PET and SPECT. The purpose of this study was to characterize the effects of scatter and tissue attenuation on the distribution of radiolabeled aerosol as measured by planar scintigraphy using Monte Carlo simulations. This s

Titanium incorporation and Ti-VI(3+)-Ti-IV(4+) charge transfer in synthetic diopside

A series of Ti-doped diopside samples synthesized by fluxgrowth methods under reducing conditions were investigated by microanalytical methods and optical absorption spectroscopy, to assess Ti incorporation mechanisms, valence states, and related electronic transitions. Chemical characterization show that Ti occurs both in the tri-and tetravalent states, with Ti4+ preferentially ordered to the tet

Humoral immune response to conserved epitopes of Chlamydia trachomatis and human 60-kDa heat-shock protein in women with pelvic inflammatory disease

The association between humoral immunity to unique and conserved epitopes of the Chlamydia trachomatis 60-kDa heat-shock protein (hsp60) and immunity to human hsp60 was examined in 129 women with laparoscopically verified pelvic inflammatory disease. An ELISA was used to detect antichlamydial IgG and IgA antibodies, IgG antibodies to recombinant human hsp60, and antibodies to two synthetic peptide

Duality between cost and density in optimal control

A theorem on duality between cost functions and density functions in optimal control is derived using the Hahn-Banach theorem. The result puts focus on convexity aspects in control synthesis and the theory of almost global stability. In particular, it gives a new proof that existence of a density function is both necessary and sufficient for almost global stability in a nonlinear system.

The occurrence of atopic dermatitis in Greenland

Until recently there was no information available on the prevalence of atopic dermatitis in Greenland. Our objective was to determine the prevalence of atopic dermatitis in younger schoolchildren in Greenland. In the autumn of 2000 we used our previously elaborated questionnaire in a cross-sectional study of 954 schoolchildren aged 7 - 8 years, who lived in five Greenlandic towns. The findings wer

Orthopedic treatment of hip fracture

There are those who advocate nonoperative treatment of impacted femoral neck fractures, but in general there is consensus that surgery is the treatment of choice for both trochanteric hip fracture and femoral neck fracture. As for trochanteric fractures, modern results after internal fixation are characterized by only a low percentage of secondary operations, even for unstable fractures and when f

Risk for periodontal disease in a Swedish adult population. Cross-sectional and longitudinal studies over two decades.

The overall aim of this thesis was to describe changes in the prevalence and severity of periodontal diseases and to identify risk factors for severe periodontal disease in adults living in Jönköping County, Sweden, by analysing the cross-sectional, epidemiological studies that had been carried out in the city of Jönköping in 1973, 1983, and 1993. Individuals were randomly selected from the follow