Browsing Fakultet for naturvitenskap (NV) by Title

Now showing items 6626-6645 of 12467

    • Macroclimatic structuring of spatial phylogenetic turnover in liverworts 

      Collart, Flavien; Wang, Jian; Patiño, Jairo; Hagborg, Anders; Söderström, Lars; Goffinet, Bernard; Magain, N.; Hardy, Olivier J.; Vanderpoorten, Alain (Peer reviewed; Journal article, 2021)
      Phylogenetic turnover has emerged as a powerful tool to identify the mechanisms by which biological communities assemble. When significantly structured along environmental gradients, phylogenetic turnover evidences ...

    • Macromolecular acidic coating increases shelf life by inhibition of bacterial growth 

      Christensen, Bjørn E.; Strand, Sabina P.; Basset, Coraline; Kristiansen, Kåre Andre; Ulset, Ann-Sissel Teialeret; Ballance, Simon; Granum, Per Einar (Journal article; Peer reviewed, 2018)
      The sensitivity of microorganisms to low pH can be utilized in food protection by preparing coatings based on macromolecular acids. Due to limited diffusivity of macromolecules low pH occurs primarily at the surface, while ...

    • Macromolecular characterisation of lignosulfonates and their interactions with chitosans 

      Fredheim, Guro Elise (Doktoravhandlinger ved NTNU, 1503-8181; 2002:99, Doctoral thesis, 2002)
      An HPLC-based SEC-MALLS method was developed for absolute molecular weight and molecular weight distribution determination for lignosulfonates. An aqueous phosphate/DMSO/SDS mobile phase yielded satisfactory SEC results. ...

    • Macromolecular interactions at the single-molecule level - Fluctuation analysis of bound states 

      Bruvold, Are Sæle (Master thesis, 2018)
      The recognition, binding and release of macromolecules are precisely orchestrated in a stochastic interplay governing all enzymatic, immunological and cellular processes. Deciphering this complex synergy in order to ...

    • Magnesiothermic Reduction of Natural Quartz 

      Rasouli, Azam; Herstad, Karl Edvin; Safarian, Jafar; Tranell, Gabriella (Journal article; Peer reviewed, 2022)
      In the current work, the metallothermic reduction of natural quartz by magnesium has been studied at 1373 K under different reaction conditions, i.e. quartz type, quartz particle size, Mg:SiO2 mole ratio and reaction time. ...

    • Magnesiothermic Reduction of Silica: A Machine Learning Study 

      Tang, Kai; Rasouli, Azam; Safarian, Jafar; Ma, Xiang; Tranell, Maria Gabriella (Peer reviewed; Journal article, 2023)
      Fundamental studies have been carried out experimentally and theoretically on the magnesiothermic reduction of silica with different Mg/SiO2 molar ratios (1–4) in the temperature range of 1073 to 1373 K with different ...

    • Magnetic and geometric control of spin textures in the itinerant kagome magnet Fe3 Sn2 

      Altthaler, Markus; Lysne, Erik Nikolai; Roede, Erik Dobloug; Prodan, Lilian; Tsurkan, Vladimir; Kassem, Mohamed A.; Nakamura, Hiroyuki; Krohns, Stephan; Kézsmárki, István; Meier, Dennis Gerhard (Peer reviewed; Journal article, 2021)
      Magnetic materials with competing magnetocrystalline anisotropy and dipolar energies can develop a wide range of domain patterns, including classical stripe domains, domain branching, and topologically trivial and nontrivial ...

    • Magnetic and Stimuli-Responsive Nanoparticles for Environmental and Biomedical Applications 

      Sharma, Anuvansh (Doctoral theses at NTNU;2021:362, Doctoral thesis, 2021)
      For the past few decades, nanomaterials have been an integral part of research involving applications in various industries, ranging from pharmaceuticals, electronics, energy, chemical, food, aviation, etc, owing to their ...

    • Magnetic and Thermodynamic Properties of Layered and Thin Film Superconductors 

      Thisted, Ulrik Schou (Doktoravhandlinger ved NTNU, 1503-8181; 2004:63, Doctoral thesis, 2004)
      A large variety of measurements, most of magnetic nature, performed on single crystals of high temperature superconductors and thin films of lead, are presented. Furthermore, numerical calculations of the magnetic properties ...

    • Magnetic contributions in multiferroic gadolinium modified bismuth ferrite ceramics 

      Walker, Julian; Mirjanic, Anja; Sadl, Uros; Condurache, Oana Andreea; Bencan, Andreja; Rojac, Tadej; Grigoras, Marian; Uršič, Hana (Peer reviewed; Journal article, 2020)
      Bi0.88Gd0.12FeO3 multiferroics are of interest for next-generation electronics and are shown with a remnant magnetization 0.2 emu·g−1, coercive field 8 kOe, Curie temperature 370 °C and magnetization of 0.7 emu·g−1 at ...

    • Magnetic domain configuration of (111)-oriented LaFeO3 epitaxial thin films 

      Hallsteinsen, Ingrid; Moreau, Magnus; Chopdekar, R.V.; Christiansen, Emil; Nord, Magnus Kristofer; Vullum, Per Erik; Grepstad, Jostein; Holmestad, Randi; Selbach, Sverre Magnus; Scholl, A; Arenholz, E; Folven, Erik; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2017)
      In antiferromagnetic spintronics control of the domains and corresponding spin axis orientation is crucial for devices. Here we investigate the antiferromagnetic axis in (111)-oriented LaFeO3/SrTiO3, which is coupled to ...

    • Magnetic flux density measurements and mobile phone provocation studies: Investigations in the 50 Hz and the mobile phone frequency regions 

      Straume, Aksel (Doktoravhandlinger ved NTNU, 1503-8181; 2007:114, Doctoral thesis, 2007)
      The aims of this thesis work were divided into two main areas. The first area was an investigation of the extremely low frequency magnetic fields in urban environment and from electrical devices. The second area was mobile ...

    • Magnetic Nanoparticles for Extraction of Naphthenic Acids from Model Oil 

      Ronander, Mia Elise (Master thesis, 2015)
      The Master s thesis aims for synthesis of magnetic nanoparticles (MNP), silica-coated magnetic nanoparticles, and their application for extraction of naphthenic acids (NA) from model oil. The present work is a part of a ...

    • Magnetic Nanoparticles to Unique DNA Tracers: Effect of Functionalization on Physico‑chemical Properties. 

      Sharma, Anuvansh; Foppen, Jan Willem; Banerjee, Abhishek; Sawssen, Slimani; Bachhar, Nirmalya; Peddis, Davide; Bandyopadhyay, Sulalit (Peer reviewed; Journal article, 2021)
      To monitor and manage hydrological systems such as brooks, streams, rivers, the use of tracers is a well-established process. Limited number of potential tracers such as salts, isotopes and dyes, make study of hydrological ...

    • Magnetic Polymeric Nanoparticles for Biomedical Applications 

      Bin Ashar, Ahmad (Master thesis, 2021)
      Iron Oxide Nanoparticles (IONPs) have been extensively used in different applications including biomedicine, hydrology, and catalysis. This is because IONPs have excellent physico-chemical properties like superparamagnetism. ...

    • Magnetic Resonance Imaging (MRI) Quality Assurance Phantom and Protocol 

      Gyebi, Alex Gyamfi (Master thesis, 2023)
      Mål: Foreslå og designe en billig, lett produsert, og svært effektiv alternativ kvalitetskontroll fantom og medfølgende måleprotokoll for MRI kvalitetskontroll. Materiale og Metoder: Allment tilgjengelige og billige ...

    • Magnetic Resonance Imaging: Multidimensional non-Gaussian Diffusion-weighted MRI - Image quality analysis 

      Meisingset, Jens Wergeland (Master thesis, 2015)
      To investigate the viability of two different nuclear magnetic resonance imaging systems for acquisition of highly diffusion weighted, multidimensional human brain data, images were acquired on both, using two different ...

    • Magnetization Dissipation in Bulk Ferromagnets and Ferromagnetic Quantum Dots 

      Fjærbu, Eirik Løhaugen (Master thesis, 2014)
      We study the magnetization dynamics of a nano-scale ferromagnet. We show that the phenomenological Landau-Lifschitz-Gilbert predicts a damped precession of the magnetization. The ferromagnet is coupled to two large reservoirs ...

    • Magnetization dynamics and Majorana fermions in ferromagnetic Josephson junctions along the quantum spin Hall edge 

      Black-Schaffer, Annica; Linder, Jacob (Journal article; Peer reviewed, 2011)
      We investigate the interplay between ferromagnetic and superconducting order at the edge of a quantum spin Hall insulator. Using complementary analytical and self-consistent numerical approaches, we study a ferromagnetic ...

    • Magnetization Dynamics and Spinsupercurrents in Superconductingand Multiferroic Systems 

      Kulagina, Iryna (Doctoral thesis at NTNU;2016:5, Doctoral thesis, 2016)
      This thesis presents the research findings from three articles which have been published or submitted for publication. In the first article, we study the magnetization dynamics and anomalous supercurrent that can arise ...