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  • Result 112911-112920 of 221895
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112911.
  • Larsson, Cecilia, et al. (author)
  • Samverkan kring habitatförvaltning höjer avkastningen i jordbruket
  • 2016
  • Reports (other academic/artistic)abstract
    • Pollinering med hjälp av vilda insekter gynnar pollineringsberoende grödor. Anläggning och bevarande av pollinatörsvänliga habitat är därför en investering som kan öka avkastningen i jordbruket. Pollinerare är mobila organismer som rör sig över större avstånd i landskapet. Därför kan ett habitat vara till nytta inte bara för den jordbrukare som förvaltar det, utan även för gårdar runtomkring. Vi undersöker fördelarna med att habitat förvaltas på landskapsnivå istället för av den enskilde jordbrukaren. Vi finner att koordinerad förvaltning av habitat leder till att mer habitatyta anläggs och att den sprids ut på ett bättre sätt i landskapet, att alla gårdar i landskapet får ökad avkastning om habitat förvaltas med ett landskapsperspektiv och att Politiska styrmedel eller mer information om fördelarna behövs för att jordbrukarna ska samverka kring förvaltningen av habitat.
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112912.
  • Larsson, Christer, et al. (author)
  • SAR-ISAR Blending Using Compressed Sensing Methods
  • 2015
  • In: AMTA Proceedings. ; , s. 1-6
  • Conference paper (peer-reviewed)abstract
    • Inverse Synthetic Aperture Radar (ISAR) target images are extracted using compressed sensing methods. The extracted images are edited and merged into measured Synthetic Aperture Radar (SAR) images. A noise free image of the target is extracted from the Radar Cross Section (RCS) measurement by using the Basis Pursuit Denoise (BPDN) method and then solving for a model consisting of point scatterers. The target signature point scatterers are then merged into a point scatterer representation of the SAR background scene. This method means that SAR images acquired in expensive airborne field trials can be used efficiently to evaluate different targets and camouflage measured separately in a ground based setup. The method is demonstrated with turntable measurements of a full scale target, with and without camouflage, signature extraction and blending into a SAR background. We find that the method provides an efficient way of evaluating measured target signatures in SAR backgrounds.
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112913.
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112914.
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112915.
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112916.
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112917.
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112918.
  • Larsson, Charlotte U (author)
  • PROTEIN VACCINE AGAINST NEONATAL GROUP B STREPTOCOCCAL INFECTION Immunization experiments in animals and a serological study in humans
  • 2004
  • Doctoral thesis (other academic/artistic)abstract
    • Infection with group B streptococcus (GBS), an encapsulated bacterium, is an important cause of neonatal morbidity and mortality. Capsular polysaccharides and cell surface proteins of GBS are candidate antigens for development of a human GBS vaccine. Proteins have many advantages as vaccine antigens. The majority of the neonatal infections are caused by strains of capsular serotypes Ia, Ib, II, III, and V. More than 80% of these strains express protein α, Rib or Rib-like protein. The possible role of the cell surface proteins α and Rib for a protein-based GBS vaccine was explored in three experimental studies on mice and one observational study of neonates and their mothers. Mice immunized s.c. with a highly purified preparation of Rib mixed with Freund’s adjuvant, were protected against lethal i.p. challenge with each of four GBS strains expressing Rib and partially against a strain expressing α. Immunization with α protected against infection with each of two strains expressing α, but not against a strain expressing Rib. A bivalent vaccine of Rib and α with alum, an adjuvant commonly used in human vaccines, conferred protection against lethal i.p. challenge with each of four GBS strains of serotypes Ia, Ib, II, and III. Intranasal immunization of mice with protein Rib conjugated to or mixed with cholera toxin B subunit induced systemic and local genital antibody response. This mucosal immunization protected the mice against a lethal i.p. challenge with a GBS type III strain expressing Rib. Sera were collected from neonates with invasive GBS infection, from their mothers and from non-infected referents. There was an association between low levels of naturally acquired antibodies to α and Rib and invasive infection with strains expressing Rib in sera collected from neonates, which indicates that antibodies to GBS proteins are involved in the defence against GBS disease. The results from the immunization experiments in mice and the serological study in neonates are encouraging for the development of a human vaccine based on GBS cell surface proteins.
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112919.
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112920.
  • Larsson, Christer, et al. (author)
  • Waveguide measurements of the permittivity and permeability at temperatures up to 1000 C
  • 2010
  • Reports (other academic/artistic)abstract
    • This paper describes a method to measure the permittivity and the permeability at temperatures from room temperature up to 1000 C using a single rectangular waveguide. The hardware design of the setup that can handle these temperatures and the procedure that is required to correct for the thermal expansion is developed. This includes the sample displacement, the displacement of the calibration reference planes, the thermal expansion of the waveguide and the gap between the sample and the waveguide wall. Measurements on Macor\textregistered and NiZn Ferrite samples are performed in order to evaluate the performance of the setup and the procedure that is used to determine the permittivity and permeability from the measured S-parameters.
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  • Result 112911-112920 of 221895
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journal article (131681)
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doctoral thesis (11380)
reports (8571)
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peer-reviewed (155904)
other academic/artistic (52260)
pop. science, debate, etc. (13729)
Author/Editor
Linderson, Hans (1718)
Harrison, Dick (1372)
Sundén, Bengt (930)
Zwalinski, L. (926)
Ekelöf, Tord (893)
Ellert, Mattias (869)
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Sundquist, Kristina (850)
Brenner, Richard (836)
Sundquist, Jan (808)
Strandberg, Jonas (795)
Melander, Olle (749)
Aad, G (729)
Nilsson, Peter (718)
Iwarsson, Susanne (701)
Doglioni, Caterina (692)
Oskarsson, Anders (665)
Groop, Leif (650)
Åström, Karl Johan (647)
Smirnova, Oxana (641)
Samuelson, Lars (638)
Silverstein, Samuel ... (636)
Bohm, Christian (632)
Lund-Jensen, Bengt (626)
Stenlund, Evert (625)
Zander, Ulf (612)
Hedberg, Vincent (610)
Jarlskog, Göran (606)
Mjörnmark, Ulf (602)
Moa, Torbjörn (594)
Svanberg, Sune (582)
Hellman, Sten (566)
Abdallah, J (558)
Abbott, B. (557)
Abdinov, O (557)
Hansson, Oskar (552)
Åkesson, Torsten (550)
Engström, Gunnar (524)
Lytken, Else (523)
Mattiasson, Bo (511)
Sjölin, Jörgen (506)
Johansson, Rolf (501)
Enkvist, Inger (496)
Bocchetta, Simona (494)
Vrba, V. (491)
Persson, Anders (491)
Dunér, David (486)
Clement, Christophe (484)
Tapper, Michael (482)
Milstead, David A. (478)
Pöttgen, Ruth (477)
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University
Lund University  (221895)Undo refine
Karolinska Institutet (7935)
Uppsala University (7014)
University of Gothenburg (5831)
Umeå University (3835)
Linköping University (3672)
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Stockholm University (2636)
Royal Institute of Technology (2561)
Linnaeus University (2488)
Malmö University (2015)
Chalmers University of Technology (1561)
Swedish University of Agricultural Sciences (1253)
Örebro University (1203)
Halmstad University (1005)
Kristianstad University College (768)
Jönköping University (623)
RISE (616)
Luleå University of Technology (524)
Karlstad University (460)
Mid Sweden University (387)
Blekinge Institute of Technology (353)
Högskolan Dalarna (338)
University of Borås (282)
Södertörn University (236)
Mälardalen University (233)
University of Skövde (155)
University of Gävle (137)
VTI - The Swedish National Road and Transport Research Institute (123)
Stockholm School of Economics (116)
Swedish Museum of Natural History (106)
University West (80)
Marie Cederschiöld högskola (80)
Sophiahemmet University College (53)
Red Cross University College (52)
The Swedish School of Sport and Health Sciences (50)
Swedish National Defence College (43)
Swedish National Heritage Board (38)
University College Stockholm (38)
IVL Swedish Environmental Research Institute (36)
Swedish Environmental Protection Agency (34)
The Nordic Africa Institute (18)
The Institute for Language and Folklore (7)
Stockholm University of the Arts (6)
Royal College of Music (4)
University College of Arts, Crafts and Design (2)
The Royal Institute of Art (1)
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Language
English (180198)
Swedish (37766)
Danish (865)
German (782)
French (446)
Spanish (441)
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Arabic (131)
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Lithuanian (5)
Slovak (5)
Indonesian (5)
Hebrew (2)
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Research subject (UKÄ/SCB)
Medical and Health Sciences (69752)
Natural sciences (52624)
Social Sciences (44761)
Engineering and Technology (32808)
Humanities (32568)
Agricultural Sciences (2017)

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