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Browsing by Subject "Litrófsgreining"

Browsing by Subject "Litrófsgreining"

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  • Aufaristama, Muhammad; Höskuldsson, Ármann; Ulfarsson, Magnus; Jónsdóttir, Ingibjörg; Thordarson, Thorvaldur (MDPI AG, 2019-02-26)
    The Holuhraun lava flow was the largest effusive eruption in Iceland for 230 years, with an estimated lava bulk volume of ~1.44 km3 and covering an area of ~84 km2. The six month long eruption at Holuhraun 2014–2015 generated a diverse surface environment. ...
  • Saha, Subham (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-06)
    Electron paramagnetic resonance (EPR) spectroscopy is routinely used to study the structure and dynamics of nucleic acids, to obtain information about their functions. A prerequisite for most EPR studies of nucleic acids is the incorporation of ...
  • HASSOUN, ABDO; Gudjónsdóttir, María; Prieto, Miguel A.; Garcia-Oliveira, Paula; Simal-Gandara, Jesus; Marini, Federico; Di Donato, Francesca; D'Archivio, Angelo; Biancolillo, Alessandra (MDPI AG, 2020-08-14)
    In this review, we summarize the most recent advances in monitoring changes induced in fish and other seafood, and meat and meat products, following the application of traditional processing processes by means of conventional and emerging advanced ...
  • Lv, Zhiyong; Zhang, Penglin; Benediktsson, Jon Atli (MDPI AG, 2017-03-17)
    Aerial image classification has become popular and has attracted extensive research efforts in recent decades. The main challenge lies in its very high spatial resolution but relatively insufficient spectral information. To this end, spatial-spectral ...
  • Jagtap, Anil P.; Geiger, Michel-Andreas; Stöppler, Daniel; Orwick-Rydmark, Marcella; Oschkinat, Hartmut; Sigurdsson, Snorri (Royal Society of Chemistry (RSC), 2016)
    Dynamic nuclear polarization (DNP) is an efficient method to overcome the inherent low sensitivity of magic-angle spinning (MAS) solid-state NMR. We report a new polarizing agent (bcTol), designed for biological applications, that yielded an enhancement ...
  • Mandal, Sucharita (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2020-12-15)
    Dynamic nuclear polarization (DNP) has emerged as an important technique to enhance the signal intensity of nuclear magnetic resonance (NMR) spectroscopy by transferring spin polarization from unpaired electrons to nuclei of interest. Persistent organic ...
  • Juliusson, Haraldur Y.; Segler, Anna-Lena J.; Sigurdsson, Snorri (Wiley, 2019-06-17)
    Oligonucleotides containing nitroxide spin labels, used in biophysical studies of nucleic acids, are frequently prepared by chemical synthesis. However, during the synthesis of spin‐labeled oligonucleotides, the nitroxides are partially reduced to the ...
  • Rees, Julian A.; Bjornsson, Ragnar; Kowalska, Joanna K.; Lima, Frederico A.; Schlesier, Julia; Sippel, Daniel; Weyhermüller, Thomas; Einsle, Oliver; Kovacs, Julie A.; DeBeer, Serena (Royal Society of Chemistry (RSC), 2017)
    An investigation of the active site cofactors of the molybdenum and vanadium nitrogenases (FeMoco and FeVco) was performed using high-resolution X-ray spectroscopy. Synthetic heterometallic iron–sulfur cluster models and density functional theory ...
  • Gophane, Dnyaneshwar B.; Endeward, Burkhard; Prisner, Thomas F.; Sigurdsson, Snorri (Wiley, 2014-10-08)
    Three structurally related isoindoline-derived spin labels that have different mobilities were incorporated into duplex DNA to systematically study the effect of motion on orientation-dependent pulsed electron-electron double resonance (PELDOR) ...
  • Clark, Chase M.; Costa, Maria Sofia; Sanchez, Laura M.; Murphy, Brian T. (Proceedings of the National Academy of Sciences, 2018-04-23)
    For decades, researchers have lacked the ability to rapidly correlate microbial identity with bacterial metabolism. Since specialized metabolites are critical to bacterial function and survival in the environment, we designed a data acquisition and ...
  • Grytz, C. M.; Kazemi, S.; Marko, A.; Cekan, P.; Güntert, P.; Sigurdsson, Snorri; Prisner, Thomas F. (Royal Society of Chemistry (RSC), 2017)
    Distance measurements are performed between a pair of spin labels attached to nucleic acids using Pulsed Electron–Electron Double Resonance (PELDOR, also called DEER) spectroscopy which is a complementary tool to other structure determination methods ...
  • Kaminker, Ilia; Bye, Morgan; Mendelman, Natanel; Gislason, Kristmann; Sigurdsson, Snorri; Goldfarb, Daniella (Royal Society of Chemistry (RSC), 2015)
    Mn2+ localization in hairpin 92 of the 23S ribosomal RNA (HP92) was obtained using W-band (95 GHz) DEER (double electron-electron resonance) distance measurements between the Mn2+ ion and nitroxide spin labels on the RNA. It was found to be preferably ...
  • Gränz, Markus; Erlenbach, Nicole; Spindler, Philipp; Gophane, Dnyaneshwar B.; Stelzl, Lukas S.; Sigurdsson, Snorri; Prisner, Thomas F. (Wiley, 2018-08-13)
    The investigation of the structure and conformational dynamics of biomolecules under physiological conditions is challenging for structural biology. Although pulsed electron paramagnetic resonance (like PELDOR) techniques provide long‐range distance ...
  • Liu, Jun; Luo, Bin; Douté, Sylvain; Chanussot, Jocelyn (MDPI AG, 2018-05-10)
    We propose to replace traditional spectral index methods by unsupervised spectral unmixing methods for the exploration of large datasets of planetary hyperspectral images. The main goal of this article is to test the ability of these analysis techniques ...
  • Kjær, Kasper S.; Van Driel, Tim B.; Harlang, Tobias C. B.; Kunnus, Kristjan; Biasin, Elisa; Ledbetter, Kathryn; Hartsock, Robert W.; Reinhard, Marco E.; Koroidov, Sergey; Li, Lin; Laursen, Mads G.; Hansen, Frederik B.; Vester, Peter; Christensen, Morten; Haldrup, Kristoffer; Nielsen, Martin M.; Ougaard Dohn, Asmus; Pápai, Mátyás I.; Møller, Klaus Braagaard; Chabera, Pavel; Liu, Yizhu; Tatsuno, Hideyuki; Timm, Cornelia; Jarenmark, Martin; Uhlig, Jens; Sundstöm, Villy; Wärnmark, Kenneth; Persson, Petter; Németh, Zoltán; Szemes, Dorottya Sárosiné; Bajnóczi, Éva; Vankó, György; Alonso-Mori, Roberto; Glownia, James M.; Nelson, Silke; Sikorski, Marcin; Sokaras, Dimosthenis; Canton, Sophie E.; Lemke, Henrik T.; Gaffney, Kelly J. (Royal Society of Chemistry (RSC), 2019-04-22)
    Light-driven molecular reactions are dictated by the excited state potential energy landscape, depending critically on the location of conical intersections and intersystem crossing points between potential surfaces where non-adiabatic effects govern ...
  • Grytz, C. M.; Marko, A.; Cekan, P.; Sigurdsson, Snorri; Prisner, Thomas F. (Royal Society of Chemistry (RSC), 2016)
    The cocaine aptamer is a DNA three-way junction that binds cocaine at its helical junction. We studied the global conformation and overall flexibility of the aptamer in the absence and presence of cocaine by pulsed electron-electron double resonance ...
  • Wei, Zhongwang; Lee, Xuhui; Aemisegger, Franziska; Benetti, Marion; Berkelhammer, Max; Casado, Mathieu; Caylor, Kelly; Christner, Emanuel; Dyroff, Christoph; García, Omaira; González, Yenny; Griffis, Timothy; Kurita, Naoyuki; Liang, Jie; Liang, Mao-Chang; Lin, Guanghui; Noone, David; Gribanov, Konstantin; Munksgaard, Niels C.; Schneider, Matthias; Ritter, François; Steen-Larsen, Hans Christian; Vallet-Coulomb, Christine; Wen, Xuefa; Wright, Jonathon S.; Xiao, Wei; Yoshimura, Kei (Springer Science and Business Media LLC, 2019-01-22)
    The isotopic composition of water vapour provides integrated perspectives on the hydrological histories of air masses and has been widely used for tracing physical processes in hydrological and climatic studies. Over the last two decades, the infrared ...
  • Rasti, Behnood; Ghamisi, Pedram; Ulfarsson, Magnus (MDPI AG, 2019-01-10)
    In this paper, we develop a hyperspectral feature extraction method called sparse and smooth low-rank analysis (SSLRA). First, we propose a new low-rank model for hyperspectral images (HSIs) where we decompose the HSI into smooth and sparse components. ...
  • Rozas, Elena; Beierlein, Johannes; Yulin, Alexey; Klaas, Martin; Suchomel, Holger; Egorov, Oleg; Shelykh, Ivan; Peschel, Ulf; Schneider, Christian; Klembt, Sebastian; Höfling, Sven; Martín, María Dolores; Viña, Luis (Wiley, 2020-07-08)
    Polariton condensates' propagation is strongly dependent on the particular energy landscape the particles are moving upon, in which the geometry of the pathway laid for their movement plays a crucial role. Bends in the circuit's trajectories affect the ...
  • Zimta, Alina-Andreea; Sigurjonsson, Olafur Eysteinn; Gulei, Diana; Tomuleasa, Ciprian (MDPI AG, 2020-08-15)
    Nowadays, advancements in the oncology sector regarding diagnosis methods allow us to specifically detect an increased number of cancer patients, some of them in incipient stages. However, one of the main issues consists of the invasive character of ...