Now showing items 1204-1223 of 1566

    • Recent developments on manufacturing and characterization of fused quartz crucibles for monocrystalline silicon for photovoltaic applications 

      Warden, Gabriela Kazimiera; Juel, Mari; Gawel, Bartlomiej Adam; Sabatino, Marisa Di (Peer reviewed; Journal article, 2022)
      The dominating technology of solar cell production today is based on monocrystalline silicon, produced mostly by the Czochralski process. Recently, the solar cell industry, has started to move towards growing larger and ...
    • Rechargeable Batteries of the Future—The State of the Art from a BATTERY 2030+ Perspective 

      Clark, Simon; Fichtner, Maximilian; Edström, Kristina; Ayerbe, Elixabete; Berecibar, Maitane; Bhowmik, Arghya; Castelli, Ivano E.; Dominko, Roberto; Erakca, Merve; Franco, Alejandro A.; Grimaud, Alexis; Horstmann, Birger; Latz, Arnulf; Lorrmann, Henning; Meeus, Marcel; Narayan, Rekha; Pammer, Frank; Ruhland, Janna; Stein, Helge; Vegge, Tejs; Weil, Marcel (Peer reviewed; Journal article, 2021)
      The development of new batteries has historically been achieved through discovery and development cycles based on the intuition of the researcher, followed by experimental trial and error—often helped along by serendipitous ...
    • Recombination activity of grain boundaries in high-performance multicrystalline Si during solar cell processing 

      Krzysztof, Adamczyk; Søndenå, Rune; Stokkan, Gaute; Looney, Erin; Jensen, Mallory; Lai, Barry; Rinio, Markus; Sabatino, Marisa Di (Journal article; Peer reviewed, 2018)
      In this work, we applied internal quantum efficiency mapping to study the recombination activity of grain boundaries in High Performance Multicrystalline Silicon under different processing conditions. Wafers were divided ...
    • Recovery of Iron and Aluminum from Bauxite Residue by Carbothermic Reduction and Slag Leaching 

      Ekstrøm, Kai Erik; Bugten, Andreas Voll; Eijk, Casper van der; Lazou, Adamantia; Balomenos, E.; Tranell, Gabriella (Peer reviewed; Journal article, 2021)
      The recovery of major components of bauxite residue by carbothermic reduction at 1550–1750 °C and subsequent slag leaching in a Na3CO3(aq) solution is studied. Iron recovers primarily to pig-iron and lime is added to tune ...
    • Recovery of Platinum Group Metals From Secondary Sources by Selective Chlorination from Molten Salt Media 

      Martinez, Ana Maria Cuellar; Osen, Karen Sende; Støre, Anne (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2020)
      The use of molten salts as “solvents” offers interesting possibilities for the treatment of ores, industrial by-products as well as scraps, allowing the development of processes that are mid-way between pyro- and ...
    • Recycled Aluminium Alloys and their Models: Role and Behaviour of Alloying Elements during Alkaline Etching 

      Mysliu, Erlind; Sletteberg Storli, Kathrine; Kjørsvik, Eline; Lunder, Otto; Erbe, Andreas (Peer reviewed; Journal article, 2023)
      Alkaline etching is a common pretreatment for aluminum surfaces. Etching behavior was compared between an alloy based on post-consumer scrap (PCS) and several model alloys of rolled AA3005 and extruded AA6060 with ...
    • Recycling of the Flue Gas from Aluminium Electrolysis Cells 

      Solheim, Asbjørn; Senanu, Samuel (The Minerals, Metals & Materials Series;2367-1181, Chapter; Peer reviewed, 2020)
      Recycling of the flue gas from aluminium reduction cells is a possible method for increasing the CO2 concentration, thereby enabling CO2 capture. The present paper represents a preliminary study concerning some of the ...
    • Recycling of the Rare Earth Oxides from Spent Rechargeable Batteries Using Waste Metallurgical Slags 

      Tang, Kai; Ciftja, Arjan; Eijk, Casper van der; Wilson, Shawn C.; Tranell, Gabriella (Journal article; Peer reviewed, 2013)
      A high temperature process for recycling spent nickel-metal hydride rechargeable batteries has been recently developed at SINTEF/NTNU. The spent battery modules were first frozen with liquid nitrogen for the de-activation ...
    • Redox transformations of Ru catalyst during NO oxidation at industrial nitric acid production conditions 

      Gopakumar, Jithin; Martin Benum, Pål; Svenum, Ingeborg-Helene; Enger, Bjørn Christian; Waller, David; Rønning, Magnus (Peer reviewed; Journal article, 2023)
      Oxidation of nitric oxide is one of the main steps in the Ostwald process for industrial nitric acid production. This work summarises the use of - supported Ru catalyst to study the oxidation of NO to NO at ambient and 4 ...
    • Reduced well path parameterization for optimization problems through machine learning 

      Kristoffersen, Brage Strand; Bellout, Mathias; Silva, Thiago Lima; Berg, Carl Fredrik (Peer reviewed; Journal article, 2021)
      In this work we apply a recently developed machine learning routine for automatic well planning to simplify well parameterization in reservoir simulation models. This reduced-order parameterization is shown to be beneficial ...
    • Reduction and Dissolution Behaviour of Manganese Slag in the Ferromanganese Process 

      Li, Xiang; Tang, Kai; Tangstad, Merete (Journal article; Peer reviewed, 2020)
      The reduction and liquidus behaviour of manganese slag with different basicities were studied in non-isothermal experiments in the temperature range of 1400–1500 °C. Certain amounts of quartz were added to Assmang ore ...
    • Reduction Kinetics of Pre-Oxidized Ilmenite Pellets by H2-H2O Gas Mixtures 

      Canaguier, Vincent Yves; Ringdalen, Eli (Peer reviewed; Journal article, 2023)
      The reduction behavior of pelletized and pre-oxidized ilmenite is investigated in H2-H2O atmospheres containing between 0 and 7% H2O and at temperatures between 983 and 1183 K (710 and 910 °C). The reduction mechanism ...
    • Reference case and test case for benchmarking of HiPerCap technologies 

      Kvamsdal, Hanne Marie; Haugen, Geir; Brown, Jock; Wolbers, Patrick F.; Drew, Richsrd J.; Khakharia, Purvil; Monteiro, Juliana Garcia Moretz-Sohn; Goetheer, Earl L.V.; Middelkamp, Jan; Kanniche, Mohamed S.; Sirvent, Antoni Julià (Peer reviewed; Journal article, 2017)
      HiPerCap aims to develop high-potential novel and environmentally benign technologies and processes for post-combustion CO2 capture leading to real breakthroughs. The project includes all the main separation categories for ...
    • Reference data set of volcanic ash physicochemical and optical properties 

      Vogel, Andreas; Diplas, Spyridon; Durant, Adam; Azar, Amin Shahrestani; Sunding, Martin Fleissner; Rose, William I.; Sytchkova, Anna Krasilnikova; Bonadonna, Costanza; Krüger, Kirstin; Stohl, Andreas (Peer reviewed; Journal article, 2017)
      Uncertainty in the physicochemical and optical properties of volcanic ash particles creates errors in the detection and modeling of volcanic ash clouds and in quantification of their potential impacts. In this study, we ...
    • Regenerable Sorbents for High-Temperature Desulfurization of Syngas from Biomass Gasification 

      Ma, Jianyu; Mahmoodinia, Mehdi; Rout, Kumar Ranjan; Blekkan, Edd A. (Peer reviewed; Journal article, 2021)
      Single-metal high-temperature solid sorbents for syngas cleaning using Mn, Ca, Fe, Cu, or Mo supported on γ-Al2O3 were synthesized, characterized, and tested in a fixed-bed reactor. H2S and SO2 concentrations in the gas ...
    • Regional aspects of a climate and energy tax reform in Norway – exploring double and multiple dividends 

      Johansen, Ulf; Valdes, Gerardo Alfredo Perez; Werner, Adrian (Journal article; Peer reviewed, 2018)
      We investigate the potential for double or even multiple dividends arising from a climate and energy tax reform (CETR), using a regional computable general equilibrium model. Such dividends indicate if government revenues ...
    • Regulation of welding residual stress in laser-welded AISI 304 steel-niobium joints using a Cu interlayer 

      Shi, Mingxiao; Chen, Jiugong; Li, Jingyong; Mao, Weidong; Li, Shengliang; Ma, Xiang; Ni, Huifeng; Xia, Haochun (Peer reviewed; Journal article, 2021)
      Residual stress and deformation in a welded joint will significantly reduce its service life, and thus the analysis and regulation of residual stresses are very important. In this paper, a SYSWELD software was used to ...
    • Regulatory guidelines and preclinical tools to study the biodistribution of RNA therapeutics 

      Vervaeke, P.; Borgos, Sven Even F.; Sanders, N.N.; Combes, Francis (Peer reviewed; Journal article, 2022)
      The success of the messenger RNA-based COVID-19 vaccines of Moderna and Pfizer/BioNTech marks the beginning of a new chapter in modern medicine. However, the rapid rise of mRNA therapeutics has resulted in a regulatory ...
    • The relation between grain boundary precipitate formation and adjacent grain orientations in Al-Mg-Si(-Cu) alloys 

      Marioara, Calin Daniel; Børvik, Tore; Hopperstad, Odd Sture (Peer reviewed; Journal article, 2021)
      The occurrence of grain boundary precipitates was investigated with respect to the crystallographic orientation of the adjacent grains in extruded AA6110, AA6063 and AA6061 alloys brought to T6 temper. It was found that ...
    • Relations between Static and Dynamic Moduli of Sedimentary Rocks 

      Fjær, Erling (Peer reviewed; Journal article, 2019)
      Static moduli of rocks are usually different from the corresponding dynamic moduli. The ratio between them is generally complex and depends on several conditions, including stress state and stress history. Different drainage ...