Now showing items 22338-22357 of 22428

    • X-ray computed tomography investigation of dilation of mineral-filled PVC under monotonic loading 

      Olufsen, Sindre Nordmark; Clausen, Arild Holm; Breiby, Dag Werner; Hopperstad, Odd Sture (Peer reviewed; Journal article, 2019)
      The deformation-induced dilation of mineral-filled polyvinyl chloride (PVC) is investigated by means of polychromatic X-ray absorption tomography (XCT). Axisymmetric notched tensile specimens are strained to prescribed ...
    • X-ray Microprobe Investigation of Iron During a Simulated Silicon Feedstock Extraction Process 

      Bernardis, Sarah; Fakra, Sirine C.; Dal Martello, Elena; B. Larsen, Rune; Newman, Bonna K.; Fenning, David P.; Di Sabatino Lundberg, Marisa; Buonassisi, Tonio (Peer reviewed; Journal article, 2016)
      Elemental silicon is extracted through carbothermic reduction from silicon-bearing raw feedstock materials such as quartz and quartzites. We investigate the micron-scale distribution and valence state of iron, a deleterious ...
    • X-ray nanoscopy of a bulk heterojunction 

      Patil, Nilesh; Skjønsfjell, Eirik Torbjørn Bakken; Van den Brande, Niko; Chavez Panduro, Elvia Anabela; Claessens, Raf; Guizar-Sicairos, Manuel; Van Mele, Bruno; Breiby, Dag Werner (Journal article; Peer reviewed, 2016)
      Optimizing the morphology of bulk heterojunctions is known to significantly improve the photovoltaic performance of organic solar cells, but available quantitative imaging techniques are few and have severe limitations. ...
    • X-ray repair cross complementing protein 1 in base excision repair 

      Hanssen-Bauer, Audun; Solvang-Garten, Karin; Akbari, Mansour; Otterlei, Marit (Journal article; Peer reviewed, 2012)
      X-ray Repair Cross Complementing protein 1 (XRCC1) acts as a scaffolding protein in the converging base excision repair (BER) and single strand break repair (SSBR) pathways. XRCC1 also interacts with itself and rapidly ...
    • X-ray Studies of Carbon Dioxide Intercalation in Na-Fluorohectorite Clay at Near-Ambient Conditions 

      Hemmen, Henrik; Rolseth, Erlend G.; Fonseca, Davi de Miranda; Hansen, Elisabeth Lindbo; Fossum, Jon Otto; Plivelic, T (Journal article, 2012)
      We show experimentally that gaseous CO2 intercalates into the interlayer space of the synthetic smectite clay Na-fluorohectorite at conditions not too far from ambient. The mean interlayer repetition distance of the clay ...
    • X65 steel pipes subjected to combined stretching and bending 

      Kristoffersen, Martin; Børvik, Tore; Langseth, Magnus; Hopperstad, Odd Sture (Chapter, 2015)
      Subsea pipelines are occasionally struck and hooked by objects such as anchors or trawl gear. The initial denting followed by a potential hooking and displacement of the pipeline, with a simultaneous increase in tensile ...
    • Xandarovula patula (Gastropoda: Ovulidae) new to Scandinavia 

      Høisæter, Tore; Sneli, Jon-Arne; Schander, Christoffer; Rapp, Hans Tore; Berggren, Matz (Journal article; Peer reviewed, 2011)
      In August 2009 six specimens of the ovulid gastropod Xandarovula patula (Pennant, 1777) (formerly known as Simnia patula Pennant, 1777), were found in dredge samples from a locality west of Smögen in western Sweden (58°22′N ...
    • XAS investigation of silica aerogel supported cobalt rhenium catalysts for ammonia decomposition 

      Kirste, Karsten Granlund; Laassiri, Said; Hu, Zhigang; Stoian, Dragos; Torrente-Murciano, Laura; Hargreaves, Justin S. J.; Mathisen, Karina (Peer reviewed; Journal article, 2020)
      The implementation of ammonia as a hydrogen vector relies on the development of active catalysts to release hydrogen on-demand at low temperatures. As an alternative to ruthenium-based catalysts, herein we report the ...
    • XPS and GDOES characterization of porous coating enriched with copper and calcium obtained on tantalum via plasma electrolytic oxidation 

      Rokosz, Krzysztof; Hryniewicz, Tadeusz; Chapon, Patrick; Raaen, Steinar; Sandim, Hugo Ricardo Zschommler (Peer reviewed; Journal article, 2016)
      XPS and GDOES characterizations of porous coatings on tantalum after Plasma Electrolytic Oxidation (PEO) at 450 V for 3 minutes in electrolyte containing concentrated (85%) phosphoric acid with calcium nitrate and copper ...
    • XPS Examination of the Oxide-Metal Interface of an Aluminum-Magnesium Alloy Containing Beryllium 

      Smith, Nicholas; Kvithyld, Anne; Tranell, Gabriella (Chapter, 2018)
      The addition of beryllium to high magnesium aluminum alloys has long been known to cause a significant decrease in the rate of alloy oxidation. A clear understanding of the fundamental mechanism behind this effect is still ...
    • XVII New Literatures 

      Batra, Kanika; Egbunike, Louisa; Lorre-Johnston, Christine; Kamugisha, Aaron; Manzo, Kerry; Miller, Benjamin; Naruse, Cheryl Narumi; Niblett, Michael; Raja, Ira; Sharrad, Paul; Uraizee, Joya; Zarranz, Libe Garcia (Peer reviewed; Journal article, 2020)
      This chapter has seven sections: 1. Africa; 2. Australia; 3. Canada; 4. The Caribbean; 5. New Zealand and Pacific; 6. South Asia: The Indian Subcontinent and Sri Lanka; and 7. Southeast Asia. Section 1 is by Kanika Batra, ...
    • Xylopsora canopeorum (Umbilicariaceae), a new lichen species from the canopy of Sequoia sempervirens 

      Bendiksby, Mika; Næsborg, Rikke Reese; Timdal, Einar (Journal article; Peer reviewed, 2018)
      Xylopsora canopeorum Timdal, Reese Næsborg & Bendiksby is described as a new species occupying the crowns of large Sequoia sempervirens trees in California, USA. The new species is supported by morphology, anatomy, secondary ...
    • Yang-Mills connections on quantum Heisenberg manifolds 

      Kang, Sooran; Luef, Franz; Judith, Packer (Journal article; Peer reviewed, 2020)
      We investigate critical points and minimizers of the Yang-Mills functional YM on quantum Heisenberg manifolds Dc µν, where the Yang-Mills functional is defined on the set of all compatible linear connections on finitely ...
    • Yb-Doped Fiber Lasers Operating in the Range of 1147-1200 nm 

      Dvoyrin, Vladislav; Medvedkov, OI; Sorokina, Irina T (Chapter, 2012)
      Pump source brightness and heat production per unit fiber length were found to be the critical parameters for the realized and investigated Yb-doped fiber lasers operating in the range of 1147-1200 nm.
    • Yb-Tm energy transfer in Y-codoped fibers 

      Klimentov, Dmitry; Sorokina, Irina T; Dvoyrin, Vladislav; Halder, Arindam; paul, mukul; Das, Shyamal; Bhadra, Shyamal; Pal, Mrinmay (Chapter, 2013)
      Experimental investigation of Yb-Tm energy transfer process in Yb/Tm-doped fibers with Y-codoping provided a fairly high energy transfer efficiency of 50 %, making lasers based on these glass fibers attractive for diode-pumping ...
    • YDFL Operating in 1150-1200-nm Spectral Domain 

      Dvoyrin, Vladislav; Medvedkov, OI; Sorokina, Irina T (Journal article; Peer reviewed, 2013)
      A family of high-power Yb-doped fiber lasers operated in the range of 1150–1180 nm with output powers of up to 35 W and optical efficiencies up to 60% is realized. Operation at 1200 nm is also demonstrated. Amplified ...
    • Yield improvements in anaerobic digestion of lignocellulosic feedstocks 

      Hashemi, Sayedbehnam; Sarker, Shiplu; Lamb, Jacob Joseph; Lien, Kristian Myklebust (Peer reviewed; Journal article, 2020)
      The new EU bioenergy sustainability criteria demonstrate that bioenergy sustainability can be a challenge (Schlegel and Kaphengst, 2007). In 1990s, the energy crops were the main source for biogas production in Europa; ...
    • YKL-40 (Chitinase-3-Like Protein 1) Serum Levels in Aortic Stenosis 

      Arain, Fizza Kanwal; Abraityte, Judita Aurelija; Bogdanova, Mariia; Solberg, Ole Geir; Michelsen, Annika; Lekva, Tove; Aakhus, Svend; Holm, Sverre; Halvorsen, Bente; Finsen, Alexandra; Vinge, Leif Erik; Nymo, Ståle Haugset; Espeland, Torvald; Ranheim, Trine; Aukrust, Pål; Vaage, Ingvar Jarle; Auensen, Andreas; Gullestad, Lars; Ueland, Thor (Peer reviewed; Journal article, 2020)
      BACKGROUND: Identification of novel biomarkers could provide prognostic information and improve risk stratification in patients with aortic stenosis (AS). YKL-40 (chitinase-3-like protein 1), a protein involved in ...
    • Yoga for children and young people’s mental health and well-being: research review and reflections on the mental health potentials of yoga 

      Hagen, Ingunn; Nayar, Usha S. (Journal article; Peer reviewed, 2014)
      This article discusses yoga as a potential tool for children to deal with stress and regulate themselves. Yoga provides training of mind and body to bring emotional balance. We argue that children and young people need ...
    • Yoga, change and embodied enlightenment 

      Langøien, Lars Jørun (Journal article; Peer reviewed, 2012)
      Though it has been claimed that modern yoga retains little of its origins of religious austerity, I will argue that even if yoga as a physical practice has taken a strong position among the modern fitness trends, there are ...