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Browsing Artikler, rapporter og annet (TMU) by Author
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Myhr, Anne Ingeborg; Traavik, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)[+][-]
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Myhr, Anne Ingeborg; Rosendal, Kristin; Olesen, Ingrid (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)[+][-]
Abstract: The objective of this chapter is to give an overview and analysis of the current trends and developments in biotechnology in aquaculture research and management. The technological developments along with structural changes in the aquaculture sector may affect access and intellectual property rights (IPR) regimes. These issues will be discussed in a wide perspective involving both short and long-term biological effects, ethical and other social aspects (economic, legal and political issues), including their partly inherent contradictions needing compromising for sustainable development. The chapter will focus on current biological challenges within aquaculture as a growing food production sector, with less emphasis on external effects such as environmental effects. Cases from farmed salmon and cod in Norway in addition to shrimp and tilapia in Asia will be highlighted. URI: http://hdl.handle.net/10037/4614 File(s) in this item: 1
article.pdf (267.1Kb) -
Nilsen, Kjersti Wannebo; Bjerke, Jarle Werner; Beck, Pieter S.A.; Tommervik, H (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)[+][-]
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Åsbakk, Kjetil; Nilssen, Arne C.; Oksanen, Antti; Haugerud, Rolf E.; Hemmingsen, Willy (Journal article; Tidsskriftartikkel; Peer reviewed, 1999)[+][-]
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Isomursu, Marja; Nilssen, Arne C.; Oksanen, Antti (Journal article; Tidsskriftartikkel; Peer reviewed, 02-Jun-2008)[+][-]
Abstract: About fifty larvae of Cephenemyia ulrichii Brauer (Diptera: Oestridae), some of them nearly fullgrown third instars, were found in the throat of a roe deer (Capreolus capreolus) in June 2007 near Helsinki in Finland. The parasite is considered to be host specific, occurring only in the moose (Alces alces), and this paper is apparently the first report of a successful infestation in an aberrant host. URI: http://hdl.handle.net/10037/2155 File(s) in this item: 1
article.pdf (684.4Kb) -
Anderson, John R.; Nilssen, Arne C. (Journal article; Tidsskriftartikkel; Peer reviewed, 1998)[+][-]
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Nilssen, Arne C.; Hemmingsen, Willy; Haugerud, Rolf E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2002)[+][-]
Abstract: The highly efficient endectocide ivermectin is used to reduce the burden of parasites in many semidomestic reindeer herds in northern Fennoscandia. In the autumn of 1995 and 1996 all reindeer on the island of Silda (42 km2) were treated with ivermectin in an attempt to eradicate the warble fly (Hypoderma (=Oedemagena) tarandi (L.)), the nose bot fly (Cephenemyia trompe (Modeer)) (Diptera: Oestridae) and the sinus worm (Linguatula arctica Riley, Haugerud and Nilssen) (Pentastomida: Linguatulidae). Silda is situated 2-3 km off the mainland of Finnmark, northern Norway, and supports about 475 reindeer in summer. A year after the first treatment, the mean abundance of H. tarandi was reduced from 3.5 to 0.6, but a year after the second treatment the mean abundance unexpectedly had increased to 4.5. After one year without treatment, the mean abundance and prevalence of the three target parasites were at the same level, or higher, than pre-treatment levels. The main hypothesis for the failure to eliminate the parasites is that gravid H. tarandi and C. trompe females originating from untreated reindeer in adjacent mainland areas dispersed to the island during the warm summer of 1997 (possibly also in 1998). As these oestrids are strong flyers, it may not be too difficult for them to cross >2-3 km of oceanic waters. There are no good explanations for the failure to eradicate L. arctica, but the results indicate that there may be elements in its life cycle that are unknown. The conclusion of the study is that it may be difficult or impossible to eradicate these parasites permanently, even locally such as on islands unless adjacent areas on the mainland are also cleared. URI: http://hdl.handle.net/10037/608 File(s) in this item: 1
article.pdf (574.1Kb) -
Olsen, Morten; Arntzen, Johan Eilertsen (Conference object; Konferansebidrag, 2007)[+][-]
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Pape, Nora Paalgard; Arntzen, Johan Eilertsen; Sommerseth, Ingrid (Conference object; Konferansebidrag, 2009)[+][-]
Abstract: For rundt 1700 år siden, mot slutten av yngre romertid, ble det gravlagt et lite barn på Hundstad på Kveøya. Funnmaterialet gir indikasjoner på at det er ei jente i 4 års alderen. Jenta har trolig blitt lagt i et steinsatt gravkammer, og hun ble plassert med hodet mot havet i sør. Hun har fått med seg flere gravgaver; ei bøylespenne i bronse, ei glassperle samt en rekke gjenstander av jern. URI: http://hdl.handle.net/10037/5136 File(s) in this item: 1
article.pdf (6.133Mb) -
Scheller, Elisabeth; Konstantinov, Yulian; Vladimirova, Vladislava (Chronicle; Kronikk, 2013)[+][-]
Abstract: Forvrengning av virkeligheten for reindriften på Kola er et hinder for å løse interne problem og inviterer til å flytte ansvaret over på ytre krefter. URI: http://hdl.handle.net/10037/5138 File(s) in this item: 1
article.pdf (258.6Kb) -
Simonsen, Povl (Research report; Forskningsrapport, 1980)[+][-]
Description: Dokumentet er en del av serien "Publikasjoner fra Helgøyprosjektet"/Universitetet i Tromsø og NAVF URI: http://hdl.handle.net/10037/3355 File(s) in this item: 1
report.pdf (29.99Mb) -
Sjøgren, Per Johan E; Andreas, Kirchhefer; Storm, Dikka; Ingrid, Sommerseth; Karl, Frafjord; Arve, Elvebakk (Research report; Forskningsrapport, 2012)[+][-]
Abstract: Forskningsprojektet DYLAN (Hvordan skal vi forvalte DYnamiske LANdskaper?) är ett tvärvetenskapligt projekt med ena foten i naturvetenskapen med paleoekologi, dendroekologi, botanik, zoologi samt bevarandeekologi och andra i kulturvetenskapen med arkeologi och kulturhistoria. Tanken är att ge en helhetlig bild av hur fjellandskapet och de övre dalgångarna i Norge använts och förändrat sig genom historiens lopp, allt sedan sista istiden. Denna kunskapen kan sedan bilda fundamentet i en mer utvecklad strategi för att bättre tillvarata, skydda och utveckla, de naturliga och kulturella värdierna som finns i det fjällnära landskapet. URI: http://hdl.handle.net/10037/4833 File(s) in this item: 1
article.pdf (7.215Mb) -
Skandfer, Marianne; Grydeland, Sven Erik; Henriksen, Siv; Nilsen, Roy Anders; Valen, Christian Roll (Research report; Forskningsrapport, 2010)[+][-]
Abstract: Utgravningene av totalt elleve lokaliteter på Skarpeneset i 2008, med et begrenset tillegg i 2009, avdekket overraskende fire store, rektangulære tufter, mer eller mindre nedgravde i bakken, på to av lokalitetene. Tuftene er datert samlet til 7000 – 6500/6400 f.Kr. Det foreslås at de er rester etter hus med parvis skråstilte, takbærende stolper, uten markerte ildsteder og med minst to åpninger/innganger. Til tross for klare likhetstrekk framviser tuftene relativt stor morfologisk variasjon med hensyn til størrelse, form, grad og form på nedgravning i gulvet, konstruksjon av vegger, samt rominndeling. Markkjemiske analyser viser at enkelte av veggene ble brukt som avfallsområder (møddinger). Funnmaterialet var konsentrert innenfor og i veggene på tuftene. Harde bergarter, inkludert flint fra lokale morenemasser, kvarts, kvartsitt og chert, dominerer. Redskapsmaterialet består av avslag med ulike typer retusj, flekker, mikroflekker, noen få tverrspisser, stikler og bor. Flekke- og mikroflekkekjerner finnes i materialet, men vanligst er bipolare kjerner. Funn av en liten, slipt skiferøks og fragmenter av to andre økser kan muligens ses i sammenheng med påvist sekundær bruk. De resterende ni lokalitetene som ble utgravd i 2008 ga lite informasjon til kulturhistoria for Skarpeneset. URI: http://hdl.handle.net/10037/2669 File(s) in this item: 1
report.pdf (15.35Mb) -
Skjelvareid, Martin H.; Olofsson, Tomas; Birkelund, Yngve; Larsen, yngvar (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)[+][-]
Abstract: The synthetic aperture focusing technique (SAFT) is used to create focused images from ultrasound scans. SAFT has traditionally been applied only for imaging in a single medium, but the recently introduced phase shift migration (PSM) algorithm has expanded the use of SAFT to multilayer structures. In this article we present a similar focusing algorithm called multi-layer omega-k (MULOK), which combines PSM and the ω-k algorithm to perform multilayer imaging more efficiently. The asymptotic complexity is shown to be lower for MULOK than for PSM, and this is confirmed by comparing execution times for implementations of both algorithms. To facilitate the complexity analysis, a detailed description of algorithm implementation is included, which also serves as a guide for readers interested in practical implementation. Using data from an experiment with a multilayered structure, we show that there is essentially no difference in image quality between the two algorithms. URI: http://hdl.handle.net/10037/4084 File(s) in this item: 1
article.pdf (769.6Kb) -
Tandberg, Anne Helene Solberg; Rapp, Hans Tore; Schander, Christoffer; Vader, Wim; Sweetman, Andrew Kvassnes; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)[+][-]
Abstract: The newly discovered deep-sea hydrothermal vent field “Loki’s Castle” at 2,350 m depth at 70°N on the Knipovich Ridge north of the island Jan Mayen is the only known black smoker field from the Arctic Ridge system. This vent field holds a unique fauna clearly distinct from vent sites along the Mid-Atlantic Ridge south of Iceland. In addition to numerous maldanid and ampharetid polychaetes one animal of particular interest at this vent site, is a new genus and species of melitid amphipod. This new species is found in cracks and crevices on vent chimneys as well as in areas where diffuse venting is common such as the base of vent chimneys. Here, we present a formal morphological description of this new melitid species and hypothesize about the main form of its nutrition using stable isotope and molecular data. URI: http://hdl.handle.net/10037/4004 File(s) in this item: 1
article.pdf (1.075Mb) -
Thomsen, Elsebeth; Jisuo, Jin; Harper, David A.T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2006)[+][-]
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Thorvaldsen, Steinar (Conference object; Konferansebidrag, 2001)[+][-]
Abstract: The international introduction of Internet during the last 8-10 years has resulted in a reorganisation of the IT-sector. This change is overwhelming, to an extent only few experts could predict.Several influential policy reports recently have argued that our societies are changing from industrial societies into 'information societies', in which the creation and dissemination of knowledge is of great importance. In October 2000 rectors and representatives of 19 higher educational establishments of Northwest Russia, Northern Norway, and America, signed a declaration on cooperation and development between higher educational establishments of the three countries. This paper will address the possibilities, challenges and problems using Internet for educators, trainers, managers and designers involved in the application of information technology (IT) to the teaching and learning process, and in the planning, administration and management of international distance education of the Barents Euro-Arctic Region. The paper is based on the principle that a university will realize and implement in practice what is thought to be a benefit for the institution. First the paper addresses the present status concerning IT infrastructure in the countries involved. Secondly, the paper discusses the different educational needs in the countries. Finally, different organizing, financing and crediting models are analyzed. Internet-based courses are not just old wine in new bottles but a new system with interesting and unpredictable implications for students, faculty, and institutions. URI: http://hdl.handle.net/10037/4220 File(s) in this item: 1
article.pdf (277.1Kb) -
Tryland, Morten; Okeke, Malachy Ifeanyi; Hård af Segerstad, Carl; Mörner, Torsten; Traavik, Ingemar Terje; Ryser-Degiorgis, Marie-Pierre (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)[+][-]
Abstract: Cowpox virus, which has been used to protect humans against smallpox but may cause severe disease in immunocompromised persons, has reemerged in humans, domestic cats, and other animal species in Europe. Orthopoxvirus (OPV) DNA was detected in tissues (lung, kidney, spleen) in 24 (9%) of 263 free-ranging Eurasian lynx (Lynx lynx) from Sweden. Thymidine kinase gene amplicon sequences (339 bp) from 21 lynx were all identical to those from cowpox virus isolated from a person in Norway and phylogenetically closer to monkeypox virus than to vaccinia virus and isolates from 2 persons with cowpox virus in Sweden. Prevalence was higher among animals from regions with dense, rather than rural, human populations. Lynx are probably exposed to OPV through predation on small mammal reservoir species. We conclude that OPV is widely distributed in Sweden and may represent a threat to humans. Further studies are needed to verify whether this lynx OPV is cowpox virus. URI: http://hdl.handle.net/10037/3897 File(s) in this item: 1
article.pdf (291.0Kb) -
Tønnessen, Ragnhild; Germundsson, Anna; Jonassen, Christine M; Haugen, Irene; Berg, Kristin; Barrett, Robert; Rimstad, Espen (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)[+][-]
Abstract: The epidemiology of avian influenza viruses (AIVs) in gulls is only partially known. The role of the world's most numerous gull species, the black-legged kittiwake (Rissa tridactyla), as a potential AIV reservoir species has been unclear. The prevalence of AIV and humoral response against AIV were therefore studied in a colony of apparently healthy black-legged kittiwakes breeding in a nesting cliff in the South West Barents Region of Norway (70°22' N, 31°10' E), in 2008 and 2009. AIVs were detected from the oropharynx and cloaca in low amounts, with prevalences of 15% and 5%, in 2008 and 2009, respectively. Direct, partial sequencing of the hemagglutinin (HA) gene revealed that the H4 subtype was present. In 2009, antibodies to influenza A virus were detected in sera from 57 of 80 adult birds. In contrast, none of the three-week-old chicks (n = 18) tested seropositive. Hemagglutination inhibition (HI) assays demonstrated that the adult kittiwakes primarily had antibodies specific to the gull-associated H13 and H16 subtypes, with antibodies to H16 being most common. These results support that the highly pelagic black-legged kittiwake is a reservoir of AIV. The serological findings suggest that H16 might be the main AIV subtype in the black-legged kittiwake. Further studies are needed to understand the ecology of AIV in the black-legged kittiwake and in gulls in general. URI: http://hdl.handle.net/10037/4082 File(s) in this item: 1
article.pdf (304.9Kb) -
Weli, Simon Chioma; Tryland, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)[+][-]
Abstract: Avipoxviruses (APVs) belong to the Chordopoxvirinae subfamily of the Poxviridae family. APVs are distributed worldwide and cause disease in domestic, pet and wild birds of many species. APVs are transmitted by aerosols and biting insects, particularly mosquitoes and arthropods and are usually named after the bird species from which they were originally isolated. The virus species Fowlpox virus (FWPV) causes disease in poultry and associated mortality is usually low, but in flocks under stress (other diseases, high production) mortality can reach up to 50%. APVs are also major players in viral vaccine vector development for diseases in human and veterinary medicine. Abortive infection in mammalian cells (no production of progeny viruses) and their ability to accommodate multiple gene inserts are some of the characteristics that make APVs promising vaccine vectors. Although abortive infection in mammalian cells conceivably represents a major vaccine bio-safety advantage, molecular mechanisms restricting APVs to certain hosts are not yet fully understood. This review summarizes the current knowledge relating to APVs, including classification, morphogenesis, host-virus interactions, diagnostics and disease, and also highlights the use of APVs as recombinant vaccine vectors. URI: http://hdl.handle.net/10037/3922 File(s) in this item: 1
article.pdf (1.554Mb)
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