Johan Höjesjö, Finn Økland, L. Fredrik Sundström, J. Pettersson, Jörgen I. Johnsson,
By combining behavioural observations on adult resident brown trout Salmo trutta in the laboratory with radio telemetry studies in a natural stream, information on movement and space use in relation to social status was obtained. Dominant individuals moved longer distances and also tended to have larger home ranges than subordinates during the summer. In general, home ranges were larger during daytime than at night. Fish were not strictly territorial since the average overlap in interquartile range ...
Tópico(s): Wildlife Ecology and Conservation
2007 - Wiley | Journal of Fish Biology
J. Pettersson, Jörgen I. Johnsson, Torgny Bohlin,
This experimental study supports the hypothesis that the competitive advantage of large body size declines with increasing group size in rainbow trout Oncorhynchus mykiss , (Walbaum).
Tópico(s): Marine and fisheries research
1996 - Wiley | Journal of Fish Biology
Joacim Näslund, Leo Pettersson, Jörgen I. Johnsson,
The behavioural response of animals to predation risk commonly depends on the behaviour of potential predators. Here, we report an experiment investigating effects of predator model (a life-like wooden trout model) distance and movement on the behaviour of three-spined sticklebacks Gasterosteus aculeatus L. in a standardized experimental setting. When the predator model was immobile, the behaviour of the sticklebacks could, in general, not be clearly distinguished from a no-predator control treatment. ...
Tópico(s): Amphibian and Reptile Biology
2016 - Canadian Science Publishing | FACETS
Torgny Bohlin, J. Pettersson, Jörgen I. Johnsson,
A comparison between a high‐density (migratory) and a low‐density (stream‐resident) population of brown trout Salmo trutta , from the same stream, showed there was no support for the view that aggression was density‐dependent.
Tópico(s): Fish Biology and Ecology Studies
2002 - Wiley | Journal of Fish Biology
Nina Tilly, Pär Olsson, Torbjörn Hartman, Jeffrey A. Coderre, Michael Makar, Jonas Malmquist, Stefan Sjöberg, J. Pettersson, Jörgen Carlsson, Ingrid Glimelius,
In boron neutron capture therapy (BNCT), 10B is delivered selectively to the tumour cells and the nuclide then forms high-LET radiation (4He2+ and 7Li3+) upon neutron capture. Today much research is focused on development of a variety of boron compounds aimed for BNCT. The compounds must be thoroughly analysed in preclinical tests regarding basic characteristics such as binding and subcellular distribution to enable accurate estimations of dose-modifying factors. DAC-1, 2-[2-(3-amino-propyl)-1,2-dicarba- ...
Tópico(s): Radiation Therapy and Dosimetry
1996 - Elsevier BV | Radiotherapy and Oncology
Karin Petersson, Helen Pettersson, Niels Jørgen Østergaard Skartved, Björn Walse, G. Forsberg,
Abstract Staphylococcal enterotoxin H (SEH) is a bacterial superantigen secreted by Staphylococcus aureus. Superantigens are presented on the MHC class II and activate large amounts of T cells by cross-linking APC and T cells. In this study, RT-PCR was used to show that SEH stimulates human T cells via the Vα domain of TCR, in particular Vα10 (TRAV27), while no TCR Vβ-specific expansion was seen. This is in sharp contrast to all other studied bacterial superantigens, which are highly specific for ...
Tópico(s): Immune Response and Inflammation
2003 - American Association of Immunologists | The Journal of Immunology
Emelie Fredriksson, Roger Mugerwa Pettersson, Jörgen Naalisvaara, Therese Löfroth,
Abstract Background Fires have been an important natural disturbance and pervasive evolutionary force in the boreal biome. Yet, fire suppression has made forest fires rare in the managed landscapes in Fennoscandia, causing significant habitat loss for saproxylic species such as polypores and insects. To better understand how the beetle community changes (species turnover) after a wildfire in a landscape with intense fire suppression, we monitored beetles with flight intercept traps the first 3 years ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2020 - Springer Nature | Ecological Processes
Gösta Pettersson, Jörgen Albertsson, Tore Ledaal, Hans M. Seip,
Tópico(s): Morinda citrifolia extract uses
1964 - Royal Society of Chemistry | Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry
Bo Stenerlöw, Orn-Anong Pettersson, Magnus Essand, Erik Blomquist, Jörgen Carlsson,
Seven cell lines were analyzed for clonogenic survival after irradiation with photons (60Co) or accelerated helium or nitrogen ions. The cell lines showed different sensitivity to photon radiation and most of the differences decreased after irradiation with helium ions with a linear energy transfer (LET) of about 40 keV/μm. However, all cell types had individual LET sensitization patterns and the mean relative biological effectiveness (RBE) at 10% survival ranged from 1.46 ± 0.12 to 2.41 ± 0.26 for the ...
Tópico(s): Radiation Dose and Imaging
1995 - Elsevier BV | Radiotherapy and Oncology
Roland Isaksson, Curt Pettersson, Göran Pettersson, S. Jönsson, Jerry Stålberg, Jörgen Hermansson, Ingrid Marle,
Cellulases are powerful chiral selectors especially for the separation of basic drugs. They have found applications both in liquid chromatography and capillary electrophoresis. Cellulases, which are produced in large amounts, are well characterised and thus useful for fundamental studies of the chiral recognition mechanism using, for instance, computer graphics. In this article, some guidelines and procedures are given for the optimisation of enantioselective separations by the mobile phase composition ( ...
Tópico(s): Enzyme Catalysis and Immobilization
1994 - Elsevier BV | TrAC Trends in Analytical Chemistry
Holger Nilsson, Christer Silvegren, Bertil Törnell, Jörgen Lundqvist, Sven Pettersson,
Abstract Suspension PVC resins were prepared using dispersant systems based on a cellulose derivative, Methocel F50, and two poly(vinyl alcohol)s; Gohsenol GH20 and Rhodoviol 5/270. Ammonium laurate and Span 20 were tested as secondary dispersants. The resins were characterized by mercury porosimetry. The results showed that the porosity of the resins increased in the series Gohsenol < Methocel < Rhodoviol. This order seems to follow the order of increasing surface activity. A closer analysis of the ...
Tópico(s): Advanced Cellulose Research Studies
1985 - Wiley | Journal of Vinyl Technology
Andreas Møgelhøj, André K. Kelkkanen, Kjartan Thor Wikfeldt, Jakob Schiøtz, Jens Jørgen Mortensen, Lars G. M. Pettersson, Bengt I. Lundqvist, Karsten W. Jacobsen, Anders Nilsson, Jens K. Nørskov,
The structure of liquid water at ambient conditions is studied in ab initio molecular dynamics simulations in the NVE ensemble using van der Waals (vdW) density-functional theory, i.e., using the new exchange–correlation functionals optPBE-vdW and vdW-DF2, where the latter has softer nonlocal correlation terms. Inclusion of the more isotropic vdW interactions counteracts highly directional hydrogen bonds, which are enhanced by standard functionals. This brings about a softening of the microscopic ...
Tópico(s): Theoretical and Computational Physics
2011 - American Chemical Society | The Journal of Physical Chemistry B
Peter Lindström, Pär Olsson, Jonas Malmqvist, J. Pettersson, Peter Lemmen, Birgit Werner, Stefan Sjöberg, Åke Olin, Jörgen Carlsson,
The toxicity and binding of the three new carborane based compounds: 2 (1,2-dicarba-closo-dodecaborane (12)-1(-yl-methoxy)-2-(3-amino-propyl))-1,3-propanediol, called DAC-1; 7-(3-amino-propyl)-7,8-dicarba-nido-undecarborate (-1) called ANC-1; and rac-1-(9-o-carboranyl)-nonyl-2-methyl-glycero-3- phosphocholine, called B-Et-11-OMe, were analyzed with cultured human glioma cells, U-343MGa, and mouse melanoma cells, B16, as biological models. The previously developed compound di-sodium undecahydro-mercapto- ...
Tópico(s): Nuclear Physics and Applications
1994 - Lippincott Williams & Wilkins | Anti-Cancer Drugs
L. Triguero, Yi Luo, Lars G. M. Pettersson, Hans Ågren, P. Väterlein, Martin Weinelt, Alexander Föhlisch, Jørgen B. Hasselstrøm, Olof Karis, Anders Nilsson,
Soft-x-ray emission spectra from ${\mathrm{C}}_{2}{\mathrm{H}}_{4}/\mathrm{C}\mathrm{u}(110)$ and ${\mathrm{C}}_{6}{\mathrm{H}}_{6}/\mathrm{C}\mathrm{u}(110)$ have been obtained for two excitation energies, resonant and nonresonant, and resolved in all three spatial components (x,y,z). The one-step theory for resonant soft x-ray spectroscopy and Raman scattering is extended to adsorbates on metal surfaces and is implemented within a density-functional theory framework. The calculations are performed for ...
Tópico(s): Electron and X-Ray Spectroscopy Techniques
1999 - American Physical Society | Physical review. B, Condensed matter
Amritpal Singh, Rolf L. Pettersson, Jörgen Karlholm, Andreas Berndt, Kjell Brunnström,
We present a two-stage process for target identification and pose estimation. A database of possible target states, i.e. identity and pose, is precomputed by a two-step clustering procedure, reflecting the two stages of the identification process. The current database is based on images generated from 3D CAD models of military ground vehicles on which realistic infrared textures have been applied. At the coarse level, the database is divided into a set of clusters, each represented by a small set ...
Tópico(s): Spectroscopy Techniques in Biomedical and Chemical Research
2004 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
SAMUELSSON: Lufttrumma III1; Ivargens öga for alto saxophone and tape2; Krom3; I Am – Are You? for horn and tape4; Flow5; Ö6. Rotationer7; Den natten8. 1Norrköping SO c. Tuomas Ollila, 2Jörgen Pettersson (alto sax), 3Stockholm Chamber Brass, 4Sören Hermansson (hn), 5KammarensembleN c. Joakim Unander, 6Anna Lindal (vln), 7Helsingborg SO c. Hannu Lintu, 8Ensemble Notus c. Olof Boman. Phono Suecia PSCD147. - Volume 58 Issue 228
Tópico(s): Music and Audio Processing
2004 - UNIVERSIDADE FEDERAL FLUMINENSE | Tempo
Tove Ejlertsen, Jørgen Prag, A Holmskov, Elisabeth Pettersson,
A 7-month outbreak of 15 cases of postpartum sepsis with group A haemolytic Streptococci (GAS) was stopped when a carrier was identified. Comparing delivery dates with duty rotas revealed that the carrier had been present during delivery in 13 of the 15 cases. The epidemic GAS type, T3-13-B3264, was found in a carbuncle in her groin and in atopic dermatitis lesions behind her ears and on her eyelids. Thus, it was not the microbiological screening of staff that helped detect the carrier. The outbreak ...
Tópico(s): Bacterial Identification and Susceptibility Testing
2001 - Informa | Scandinavian Journal of Infectious Diseases
I. Pettersson, Giampiero Muccioli, Riccarda Granata, Romano Deghenghi, Ezio Ghigo, Claes Ohlsson, Jörgen Isgaard,
Recent experimental data demonstrate cardiovascular effects of the GH secretagogues (GHSs) hexarelin and ghrelin, the proposed natural ligand for the GHS receptor. Moreover, specific cardiac binding sites for GHSs have been suggested. The aim of the present study was to investigate if the natural ligand ghrelin and synthetic GHS peptide hexarelin and analogues have direct effects on the cardiomyocyte cell line, H9c2. Hexarelin stimulated thymidine incorporation in a dose-dependent manner with significant ...
Tópico(s): Diet and metabolism studies
2002 - Bioscientifica | Journal of Endocrinology
Göran Svensson, Jörgen Albertsson, Curt R. Enzell, Tore Pettersson, A. J. Kondow, W. A. Boettner, A. M. Mulichak, Tomas Alminger, Magnus Erickson, Inger Grundevik, Inger Hagin, Kurt-Jürgen Hoffman, Svante Johansson, Sam Larsson, Ingalil Löfberg, Kristina Ohlson, Björn Persson, Inger Skånberg, Lija Tekenbergs-Hjelte,
Tópico(s): Synthesis and Reactivity of Sulfur-Containing Compounds
1989 - Royal Society of Chemistry | Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry
Torgny Bohlin, L. Fredrik Sundström, Jörgen I. Johnsson, Johan Höjesjö, J. Pettersson,
Summary Although it is not clear to what extent density dependence acts on the survival, emigration or growth of organisms, experiments testing alternative explanations are rare. A field experiment on 1‐year‐old brown trout ( Salmo trutta L.) was undertaken to address the following questions: are the mortality, movement and growth of wild stream‐living trout affected by population density? If so, are the density‐dependent effects of released hatchery trout different from the effects of wild fish? ...
Tópico(s): Marine and fisheries research
2002 - Wiley | Journal of Animal Ecology
H. Öberg, Y. Nestsiarenka, Akitaka Matsuda, Jörgen Gladh, Tony Hansson, Lars G. M. Pettersson, H. Öström,
The kinetics of acetylene adsorption and cyclotrimerization was studied by vibrational sum-frequency generation spectroscopy (SFG) and density functional theory (DFT) calculations. At low temperature, SFG shows two resonances corresponding to acetylene adsorbed in two different sites. Upon heating, two new vibrational resonances appear. We interpret these resonances as being due to C2H2 island formation and adsorbed C4H4, which is the intermediate in the subsequent cyclotrimerization reaction to form ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2012 - American Chemical Society | The Journal of Physical Chemistry C
Hanna Pettersson, Behdad Zarnegar, Annika Westin, Viktor Persson, Christiane Peuckert, Jörgen Jönsson, Jenny Hallgren, Klas Kullander,
Abstract Mast cells act as sensors in innate immunity and as effector cells in adaptive immune reactions. Here we demonstrate that SLC10A4, also referred to as the vesicular aminergic-associated transporter, VAAT, modifies mast cell degranulation. Strikingly, Slc10a4 −/− bone marrow-derived mast cells (BMMCs) had a significant reduction in the release of granule-associated mediators in response to IgE/antigen-mediated activation, whereas the in vitro development of mast cells, the storage of the granule- ...
Tópico(s): Food Allergy and Anaphylaxis Research
2017 - Nature Portfolio | Scientific Reports
Alexander Föhlisch, M. Nyberg, P. Bennich, L. Triguero, Jørgen B. Hasselstrøm, Olof Karis, Lars G. M. Pettersson, Anders Nilsson,
The atom and symmetry specific properties of x-ray emission spectroscopy have been applied to the investigation of CO adsorbed on Ni(100) and Cu(100) surfaces. In comparison to ab initio electronic structure calculations, obtained in density functional theory, we develop a consistent electronic structure model of CO adsorption on transition and noble metals and extend to a conceptual model of the surface chemical bond. A strong CO–substrate interaction is found, characterized by significant hybridization ...
Tópico(s): Catalysis and Oxidation Reactions
2000 - American Institute of Physics | The Journal of Chemical Physics
L. Triguero, Alexander Föhlisch, P. Väterlein, Jørgen B. Hasselstrøm, Martin Weinelt, Lars G. M. Pettersson, Yi Luo, Hans Ågren, Anders Nilsson,
Using resonant and off-resonant X-ray emission spectroscopy, in combination with ground-state density functional calculations, we examine the electronic structure of chemisorbed ethylene and benzene on the Cu(110) surface to investigate the suitability of the donation/back-donation bonding model given by Dewar1 and Chatt and Duncanson2 (DCD) for the interaction of unsaturated hydrocarbons with metal surfaces. We give an experimental verification of the DCD model and find donation/back-donation to ...
Tópico(s): Surface Chemistry and Catalysis
2000 - American Chemical Society | Journal of the American Chemical Society
Alexander Föhlisch, M. Nyberg, Jørgen B. Hasselstrøm, Olof Karis, Lars G. M. Pettersson, Anders Nilsson,
The interplay between the electronic and the geometric structure of adsorbates is of fundamental importance for the understanding of many surface phenomena. Using x-ray emission spectroscopy and ab initio cluster calculations, this issue has been investigated in unprecedented detail for CO adsorption in different adsorption sites. The investigation establishes pi bonding and sigma repulsion, both increasing with the number of coordinated metal atoms. The two contributions partly compensate each ...
Tópico(s): nanoparticles nucleation surface interactions
2000 - American Physical Society | Physical Review Letters
Enrica Ratti-Moberg, P. Groth, Arne Jørgen Aasen, Tore Pettersson, Gunilla Weidemann, Svante Wold, George W. Francis, Britt Karlsson,
Tópico(s): Chemistry and Chemical Engineering
1991 - Royal Society of Chemistry | Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry
Kjell Brunnström, Daniel Stålenbring, Martin Pettersson, Jörgen Gustafsson,
TV sent over the networks based on the Internet Protocol i.e IPTV is moving towards high definition (HDTV). There has been quite a lot of work on how the HDTV is affected by different codecs and bitrates, but the impact of transmission errors over IP-networks have been less studied. The study was focusing on H.264 encoded 1280x720 progressive HDTV format and was comparing three different concealment methods for different packet loss rates. One is included in a propriety decoder, one is part of FFMPEG ...
Tópico(s): Advanced Data Compression Techniques
2010 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Gunilla Pettersson, Hans Höglund, Sven Norgren, Jessica Sjöberg, Jörgen Bergström, Daniel Solberg, Frank Peng, Hans Hallgren, Anders Moberg, Carl-Henrik Ljungqvist,
A description is given regarding methods used to manufacture strong and bulky sheets from furnishes based on a broad range of surface modified CTMP qualities. Starch and CMC are adsorbed on the fib ...
Tópico(s): Material Properties and Processing
2015 - De Gruyter | Nordic Pulp & Paper Research Journal
Bent Nørgaard‐Pedersen, Henrik Alfthan, Jørgen Arends, Claus Høgdall, Severin Olesen Larsen, Kim Pettersson, Ulf‐Håkan Stenman, Riitta Salonen,
We have evaluated a simple and rapid 2‐step dual‐label assay (DELFIA®) for alphafetoprotein (AFP) and free β subunit of human gonadotropin (hCGβ) in second‐trimester screening for Down syndrome. Based on stored serum samples from 1059 normal control pregnancies and 72 cases of Down syndrome, we have found the mean Multiple of Median (MoM) for AFP and free hCGβ to be 0.70 and 2.31, respectively. This is slightly but not significantly better than the values for the separate assay for AFP (0.76 MoM) and ...
Tópico(s): Pregnancy and preeclampsia studies
1994 - Wiley | Clinical Genetics
Arthur Nathanson, Karin Ågren, Anders Biörklund, Magnus G. Lind, Lars Andréason, Matti Anniko, Anders Freijd, Lars Lejdeborn, Staffan Kinman, A. Kumlien, Anders Köling, Jörgen Lindström, A. V. Novik, Jan Olofsson, Kari‐Lvar Pettersson,
Abstract In a retrospective study of 58 patients from all over Sweden, treated for small squamous cell carcinoma of the mobile tongue (T 1 N 0 M 0 ), different prognostic factors were evaluated. A partial glossectomy was performed as primary treatment in all patients. The cancer recurred in 28 (38%) of 58 patients. One of 7 patients with only local recurrence, and 9 of 14 with recurrence in the neck died of their disease. The relative survival rate was 77%. Of the prognostic factors tested, tumor thickness ...
Tópico(s): Salivary Gland Tumors Diagnosis and Treatment
1989 - Wiley | Head & Neck