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1

Plug & abandonment of offshore wells: Ensuring long-term well integrity and cost-efficiency

Vrålstad, Torbjørn, Saasen, Arild, Fjær, Erling, Øia, Thomas, Ytrehus, Jan David, Khalifeh, Mahmoud

Journal:

Journal of Petroleum Science and Engineering

Year:

2019

Language:

english

File:

PDF, 2.61 MB

english, 2019

2

[Society of Petroleum Engineers IADC/SPE Drilling Conference and Exhibition - Fort Worth, Texas, USA (2014-03-04)] IADC/SPE Drilling Conference and Exhibition - Influence of Casing Centralization on Cement Sheath Integrity During Thermal Cycling

De Andrade, J., Torsaeter, M., Todorovic, J., Opedal, N., Stroisz, A., Vralstad, T.

Language:

english

File:

PDF, 1.24 MB

english

3

An optimization model for the planning of offshore plug and abandonment campaigns

Bakker, Steffen, Vrålstad, Torbjørn, Tomasgard, Asgeir

Journal:

Journal of Petroleum Science and Engineering

Year:

2019

Language:

english

File:

PDF, 1.80 MB

english, 2019

4

Development and reproduction of Saprolegnia species in biofilms

Ali, Shimaa E., Thoen, Even, Vrålstad, Trude, Kristensen, Ralf, Evensen, Øystein, Skaar, Ida

Journal:

Veterinary Microbiology

Year:

2013

Language:

english

File:

PDF, 1.43 MB

english, 2013

5

Numerical and experimental study of the stability of non-circular boreholes in high-permeability formations

Lavrov, A., Taghipour, A., Ytrehus, J.D., Mårdalen, J., Lund, H., Vrålstad, T., Lund, B., Carlsen, I.M., Saasen, A., Wold, S., Abdollahi, J., Torsvoll, A., Reyes, A., Næumann, J.R., Melchiorsen, J.C.,

Journal:

International Journal of Rock Mechanics and Mining Sciences

Year:

2014

Language:

english

File:

PDF, 7.65 MB

english, 2014

6

Comparison of Leak-Detection Technologies for Continuous Monitoring of Subsea-Production Templates

Vrålstad, Torbjørn, Melbye, Alf G., Carlsen, Inge M., Llewelyn, David

Journal:

SPE Projects Facilities & Construction

Year:

2011

Language:

english

File:

PDF, 617 KB

english, 2011

7

[Society of Petroleum Engineers IADC/SPE Drilling Conference and Exhibition - Fort Worth, Texas, USA (2016-03-01)] IADC/SPE Drilling Conference and Exhibition - Cement Placement with Tubing Left in Hole during Plug and Abandonment Operations

Aas, Bjarne, Sørbø, Jostein, Stokka, Sigmund, Saasen, Arild, Statoil, Rune Godøy, Lunde, Øyvind, Phillips, Conoco, Vrålstad, Torbjørn

Language:

english

File:

PDF, 2.47 MB

english

8

[Society of Petroleum Engineers SPE Bergen One Day Seminar - Bergen, Norway (2014-04-02)] SPE Bergen One Day Seminar - An Investigation of Different Approaches for Probabilistic Cost and Time Estimation of Rigless P&A in Subsea Multi-Well Campaign

Moeinikia, Fatemeh, Fjelde, Kjell Kare, Saasen, Arild, Vralstad, Torbjorn

Language:

english

File:

PDF, 319 KB

english

9

Catching the fish with the worm: a case study on eDNA detection of the monogenean parasite Gyrodactylus salaris and two of its hosts, Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss)

Rusch, Johannes C., Hansen, Haakon, Strand, David A., Markussen, Turhan, Hytterød, Sigurd, Vrålstad, Trude

Journal:

Parasites & Vectors

Year:

2018

Language:

english

File:

PDF, 2.21 MB

english, 2018

10

Large-scale synthesis of carbon nanofibers on Ni–Fe–Al hydrotalcite derived catalysts: I. Preparation and characterization of the Ni–Fe–Al hydrotalcites and their derived catalysts

Zhixin Yu, De Chen, Magnus Rønning, Torbjørn Vrålstad, Esther Ochoa-Fernández, Anders Holmen

Journal:

Applied Catalysis A: General

Year:

2008

Language:

english

File:

PDF, 922 KB

english, 2008

11

Synthesis, functionalisation and characterisation of mesoporous materials and sol–gel glasses for applications in catalysis, adsorption and photonics

Gisle Øye, Wilhelm R. Glomm, Torbjørn Vrålstad, Sondre Volden, Heléne Magnusson, Michael Stöcker, Johan Sjöblom

Journal:

Advances in Colloid and Interface Science

Year:

2006

Language:

english

File:

PDF, 794 KB

english, 2006

12

Interfacial chemistry of cobalt(II) during sol–gel synthesis of cobalt-containing mesoporous materials

Torbjørn Vrålstad, Gisle Øye, Magnus Rønning, Wilhelm R. Glomm, Michael Stöcker, Johan Sjöblom

Journal:

Microporous and Mesoporous Materials

Year:

2005

Language:

english

File:

PDF, 249 KB

english, 2005

13

Large-scale synthesis of carbon nanofibers on Ni-Fe-Al hydrotalcite derived catalysts: II: Effect of Ni/Fe composition on CNF synthesis from ethylene and carbon monoxide

Zhixin Yu, De Chen, Magnus Rønning, Bård Tøtdal, Torbjørn Vrålstad, Esther Ochoa-Fernández, Anders Holmen

Journal:

Applied Catalysis A: General

Year:

2008

Language:

english

File:

PDF, 1.61 MB

english, 2008

14

Synthesis of comparable Co-MCM-48 and Co-MCM-41 materials containing high cobalt contents

Torbjørn Vrålstad, Gisle Øye, Michael Stöcker, Johan Sjöblom

Journal:

Microporous and Mesoporous Materials

Year:

2007

Language:

english

File:

PDF, 275 KB

english, 2007

15

Formation of a three-dimensional mesostructured cobalt smectite during deposition-precipitation functionalization of mesoporous SBA-15

Torbjørn Vrålstad, Heléne K. Magnusson, Johan Sjöblom

Journal:

Microporous and Mesoporous Materials

Year:

2007

Language:

english

File:

PDF, 621 KB

english, 2007

16

Ergosedmine, a new peptide ergot alkaloid (ergopeptine) from the ergot fungus, Claviceps purpurea parasitizing Calamagrostis arundinacea

Silvio Uhlig, Dirk Petersen, Elin Rolèn, Wolfgang Egge-Jacobsen, Trude Vrålstad

Journal:

Phytochemistry Letters

Year:

2011

Language:

english

File:

PDF, 363 KB

english, 2011

17

Mycorrhizal synthesis between fungal strains of the Hymenoscyphus ericae aggregate and potential ectomycorrhizal and ericoid hosts

Trude Vrålstad, Trond Schumacher, Andy F. S. Taylor

Journal:

New Phytologist

Year:

2002

Language:

english

File:

PDF, 784 KB

english, 2002

18

The postfire discomycete Geopyxis carbonaria (Ascomycota) is a biotrophic root associate with Norway spruce (Picea abies) in nature

T. VRÅLSTAD, A. HOLST-JENSEN, T. SCHUMACHER

Journal:

Molecular Ecology

Year:

1998

Language:

english

File:

PDF, 807 KB

english, 1998

19

Piceirhiza bicolorata– the ectomycorrhizal expression of the Hymenoscyphus ericae aggregate?

TRUDE VRÅLSTAD, TONJE FOSSHEIM, TROND SCHUMACHER

Journal:

New Phytologist

Year:

2000

Language:

english

File:

PDF, 449 KB

english, 2000

20

Molecular diversity and phylogenetic affinities of symbiotic root-associated ascomycetes of the Helotiales in burnt and metal polluted habitats

Trude Vrålstad, Elin Myhre, Trond Schumacher

Journal:

New Phytologist

Year:

2002

Language:

english

File:

PDF, 378 KB

english, 2002

21

The first record of the non-indigenous signal crayfishPasifastacus leniusculusin Norway

Stein I. Johnsen, Trond Taugbøl, Oddgeir Andersen, Jon Museth, Trude Vrålstad

Journal:

Biological Invasions

Year:

2007

Language:

english

File:

PDF, 159 KB

english, 2007

22

Non-indigenous signal crayfishPacifastacus leniusculusare now common in Danish streams: preliminary status for national distribution and protective actions

Christian Skov, Kim Aarestrup, Finn Sivebæk, Stig Pedersen, Trude Vrålstad, Søren Berg

Journal:

Biological Invasions

Year:

2011

Language:

english

File:

PDF, 240 KB

english, 2011

23

ITS, OTUs and beyond—fungal hyperdiversity calls for supplementary solutions

TRUDE VRÅLSTAD

Journal:

Molecular Ecology

Year:

2011

Language:

english

File:

PDF, 441 KB

english, 2011

24

Are ericoid and ectomycorrhizal fungi part of a common guild?

Trude Vrålstad

Journal:

New Phytologist

Year:

2004

Language:

english

File:

PDF, 249 KB

english, 2004

25

New insights into the mycorrhizal Rhizoscyphus ericae aggregate: spatial structure and co-colonization of ectomycorrhizal and ericoid roots

Gwen-Aëlle Grelet, David Johnson, Trude Vrålstad, Ian J. Alexander, Ian C. Anderson

Journal:

New Phytologist

Year:

2010

Language:

english

File:

PDF, 334 KB

english, 2010

26

On reliability

Arne Holst-Jensen, Trude Vrålstad, Trond Schumacher

Journal:

New Phytologist

Year:

2004

Language:

english

File:

PDF, 578 KB

english, 2004

27

A quantitative TaqMan® MGB real-time polymerase chain reaction based assay for detection of the causative agent of crayfish plague Aphanomyces astaci

Trude Vrålstad, Ann Kristin Knutsen, Torstein Tengs, Arne Holst-Jensen

Journal:

Veterinary Microbiology

Year:

2009

Language:

english

File:

PDF, 641 KB

english, 2009

28

High diversity of root associated fungi in both alpine and arcticDryas octopetala

Frederikke Markussen Marit Bjorbækmo, Tor Carlsen, Anne Brysting, Trude Vrålstad, Klaus Høiland, Karl Inne Ugland, Jozsef Geml, Trond Schumacher, Håvard Kauserud

Journal:

BMC Plant Biology

Year:

2010

Language:

english

File:

PDF, 835 KB

english, 2010

29

Exploring the species diversity of Trichoderma in Norwegian drinking water systems by DNA barcoding

GUNHILD HAGESKAL, TRUDE VRÅLSTAD, ANN KRISTIN KNUTSEN, IDA SKAAR

Journal:

Molecular Ecology Resources

Year:

2008

Language:

english

File:

PDF, 798 KB

english, 2008

30

Monitoring the spore dynamics of Aphanomyces astaci in the ambient water of latent carrier crayfish

David A. Strand, Japo Jussila, Satu Viljamaa-Dirks, Harri Kokko, Jenny Makkonen, Arne Holst-Jensen, Hildegunn Viljugrein, Trude Vrålstad

Journal:

Veterinary Microbiology

Year:

2012

Language:

english

File:

PDF, 539 KB

english, 2012

31

Don't make a mista(g)ke: is tag switching an overlooked source of error in amplicon pyrosequencing studies?

Tor Carlsen, Anders Bjørnsgaard Aas, Daniel Lindner, Trude Vrålstad, Trond Schumacher, Håvard Kauserud

Journal:

Year:

2012

Language:

english

File:

PDF, 181 KB

english, 2012

32

Absence of the crayfish plague pathogen ( Aphanomyces astaci ) facilitates coexistence of European and American crayfish in central Europe

SCHRIMPF, ANNE, MAIWALD, TORSTEN, VRÅLSTAD, TRUDE, SCHULZ, HOLGER K., ŚMIETaNA, PRZEMYSLAW, SCHULZ, RALF

Journal:

Freshwater Biology

Year:

2013

Language:

english

File:

PDF, 176 KB

english, 2013

33

Influence of Interfacial Tension on Seeded Calcium Carbonate Scale Precipitation: Effect of Adsorbed Asphaltenes

Vrålstad, Torbjørn, Fossen, Martin, Sjöblom, Johan, Randhol, Preben

Journal:

Journal of Dispersion Science and Technology

Year:

2008

Language:

english

File:

PDF, 205 KB

english, 2008

34

Cobalt Functionalization of Mesoporous Silica by Incipient Wetness Impregnation and Co‐precipitation

Vrålstad, Torbjørn, Glomm, Wilhelm R., Øye, Gisle, Sjöblom, Johan, Stöcker, Michael

Journal:

Journal of Dispersion Science and Technology

Year:

2005

Language:

english

File:

PDF, 269 KB

english, 2005

35

Population collapses in introduced non-indigenous crayfish

Sandström, Alfred, Andersson, Magnus, Asp, Anders, Bohman, Patrik, Edsman, Lennart, Engdahl, Fredrik, Nyström, Per, Stenberg, Marika, Hertonsson, Pia, Vrålstad, Trude, Granèli, Wilhelm

Journal:

Biological Invasions

Year:

2014

Language:

english

File:

PDF, 2.87 MB

english, 2014

36

The crayfish plague pathogen can infect freshwater-inhabiting crabs

Svoboda, Jiří, Strand, David A., Vrålstad, Trude, Grandjean, Frédéric, Edsman, Lennart, Kozák, Pavel, Kouba, Antonín, Fristad, Rosa F., Bahadir Koca, Seval, Petrusek, Adam

Journal:

Freshwater Biology

Year:

2014

Language:

english

File:

PDF, 341 KB

english, 2014

37

Timing and quantifying Aphanomyces astaci sporulation from the noble crayfish suffering from the crayfish plague

Makkonen, J., Strand, D.A., Kokko, H., Vrålstad, T., Jussila, J.

Journal:

Veterinary Microbiology

Year:

2013

Language:

english

File:

PDF, 466 KB

english, 2013

38

The effect of pH on CO2-separation from post combustion gas by polyvinylamine based composite membrane

Kim, Taek-Joong, Vrålstad, Heléne, Sandru, Marius, Hägg, May-Britt

Journal:

Energy Procedia

Year:

2013

Language:

english

File:

PDF, 495 KB

english, 2013

39

Separation performance of PVAm composite membrane for CO2 capture at various pH levels

Kim, Taek-Joong, Vrålstad, Heléne, Sandru, Marius, Hägg, May-Britt

Journal:

Journal of Membrane Science

Year:

2013

Language:

english

File:

PDF, 664 KB

english, 2013

40

Piceirhiza bicolorata-The Ectomycorrhizal Expression of the Hymenoscyphus ericae Aggregate?

Trude Vralstad, Tonje Fossheim and Trond Schumacher

Journal:

New Phytologist

Year:

2000

Language:

english

File:

PDF, 2.33 MB

english, 2000

41

Molecular Diversity and Phylogenetic Affinities of Symbiotic Root-Associated Ascomycetes of the Helotiales in Burnt and Metal Polluted Habitats

Trude Vrålstad, Elin Myhre and Trond Schumacher

Journal:

New Phytologist

Year:

2002

Language:

english

File:

PDF, 2.96 MB

english, 2002

42

Special Issue: Plant Speciation || On Reliability

Arne Holst-Jensen, Trude Vrålstad and Trond Schumacher

Journal:

New Phytologist

Year:

2004

Language:

english

File:

PDF, 468 KB

english, 2004

43

Mycorrhizal Synthesis between Fungal Strains of the Hymenoscyphus ericae Aggregate and Potential Ectomycorrhizal and Ericoid Hosts

Trude Vrålstad, Trond Schumacher and Andy F. S. Taylor

Journal:

New Phytologist

Year:

2002

Language:

english

File:

PDF, 1.92 MB

english, 2002

44

New insights into the mycorrhizal Rhizoscyphus ericae aggregate: spatial structure and co-colonization of ectomycorrhizal and ericoid roots

Gwen-Aëlle Grelet, David Johnson, Trude Vrålstad, Ian J. Alexander and Ian C. Anderson

Journal:

New Phytologist

Year:

2010

Language:

english

File:

PDF, 1.81 MB

english, 2010

45

Microsatellite markers for direct genotyping of the crayfish plague pathogen Aphanomyces astaci (Oomycetes) from infected host tissues

Grandjean, Frédéric, Vrålstad, Trude, Diéguez-Uribeondo, Javier, Jelić, Mišel, Mangombi, Joa, Delaunay, Carine, Filipová, Lenka, Rezinciuc, Svetlana, Kozubíková-Balcarová, Eva, Guyonnet, Daniel, Vilja

Journal:

Veterinary Microbiology

Year:

2014

Language:

english

File:

PDF, 336 KB

english, 2014

46

Potential utilization of class C fly ash-based geopolymer in oil well cementing operations

Khalifeh, Mahmoud, Saasen, Arild, Vralstad, Torbjorn, Hodne, Helge

Journal:

Cement and Concrete Composites

Year:

2014

Language:

english

File:

PDF, 1.75 MB

english, 2014

47

Indole−Diterpenes and Ergot Alkaloids in Cynodon dactylon (Bermuda Grass) Infected with Claviceps cynodontis from an Outbreak of Tremors in Cattle

Uhlig, Silvio, Botha, Christo J., Vrålstad, Trude, Rolén, Elin, Miles, Christopher O.

Journal:

Journal of Agricultural and Food Chemistry

Year:

2009

Language:

english

File:

PDF, 4.19 MB

english, 2009

48

Spectroscopic Characterization of Cobalt-Containing Mesoporous Materials

Vrålstad, Torbjørn, Glomm, Wilhelm R., Rønning, Magnus, Dathe, Hendrik, Jentys, Andreas, Lercher, Johannes A., Øye, Gisle, Stöcker, Michael, Sjöblom, Johan

Journal:

Journal of Physical Chemistry B

Year:

2006

Language:

english

File:

PDF, 288 KB

english, 2006

49

Potential Leakage Paths along Cement-formation Interfaces in Wellbores; Implications for CO2 Storage

Opedal, Nils van der Tuuk, Torsæter, Malin, Vrålstad, Torbjørn, Cerasi, Pierre

Journal:

Energy Procedia

Year:

2014

Language:

english

File:

PDF, 1.95 MB

english, 2014

50

Molecular detection and genotyping of Aphanomyces astaci directly from preserved crayfish samples uncovers the Norwegian crayfish plague disease history

Vrålstad, Trude, Strand, David A., Grandjean, Frédéric, Kvellestad, Agnar, Håstein, Tore, Knutsen, Ann Kristin, Taugbøl, Trond, Skaar, Ida

Journal:

Veterinary Microbiology

Year:

2014

Language:

english

File:

PDF, 1.20 MB

english, 2014