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Fletta eftir efnisorði "Litrófsgreining"

Fletta eftir efnisorði "Litrófsgreining"

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  • Zhao, Bin (University of Iceland, School of Engineering and Natural Sciences, Faculty of Electrical and Computer Engineering, 2021-12-16)
    Hyperspectral images (HSIs) acquired by hyperspectral imaging sensors contain hundreds of spectral bands. The abundant spectral information provided by an HSI makes it possible to discriminate different materials in a scene. Therefore, HSIs have ...
  • 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 ...
  • Di Genova, Danilo; Caracciolo, Alberto; Kolzenburg, Stephan (Elsevier BV, 2018-10)
    Iron and water content substantially affect the physical properties of natural silicate melts and may, therefore, influence magmatic and volcanic processes such as crystallization, degassing, flow behaviour and eruptive style. Here we present Raman ...
  • Gutmann, Torsten; Liu, Jiquan; Rothermel, Niels; Xu, Yeping; Jaumann, Eva; Werner, Mayke; Breitzke, Hergen; Sigurdsson, Snorri; Buntkowsky, Gerd (Wiley, 2015-01-23)
    A novel heterogeneous dirhodium catalyst has been synthesized. This stable catalyst is constructed from dirhodium acetate dimer (Rh2(OAc)4) units, which are covalently linked to amine‐ and carboxyl‐bifunctionalized mesoporous silica (SBA‐15NH2COOH). ...
  • Shelke, Sandip; Sandholt, Gunnar Birgir; Sigurdsson, Snorri (Royal Society of Chemistry (RSC), 2014)
    Non-covalent and site-directed spin labeling gives easy access to spin-labeled nucleic acids for the study of their structure and dynamics by electron paramagnetic resonance (EPR) spectroscopy. In a search for improved spin labels for non-covalent ...
  • Juliusson, Haraldur Y.; Sigurdsson, Snorri (Wiley, 2020-07)
    Two o‐benzoquinone derivatives of isoindoline were synthesized for use as building blocks to incorporate isoindoline nitroxides into different compounds and materials. These o‐quinones were condensed with a number of o‐phenylenediamines to form ...
  • Rasti, Behnood; Scheunders, Paul; Ghamisi, Pedram; Licciardi, Giorgio; Chanussot, Jocelyn (MDPI AG, 2018-03-20)
    Hyperspectral remote sensing is based on measuring the scattered and reflected electromagnetic signals from the Earth’s surface emitted by the Sun. The received radiance at the sensor is usually degraded by atmospheric effects and instrumental (sensor) ...
  • Kamble, Nilesh Ramesh; Gränz, Markus; Prisner, Thomas F.; Sigurdsson, Snorri (Royal Society of Chemistry (RSC), 2016)
    An isoindoline-nitroxide derivative of guanine (G, "G-spin") was shown to bind specifically and effectively to abasic sites in duplex RNAs. Distance measurements on a G-labeled duplex RNA with PELDOR (DEER) showed a strong orientation dependence. Thus, ...
  • Saha, Subham; Hetzke, Thilo; Prisner, Thomas F.; Sigurdsson, Snorri (Royal Society of Chemistry (RSC), 2018)
    In the first example of site-directed spin-labeling of unmodified RNA, a pyrrolidine-nitroxide derivative of tetramethylrosamine (TMR) was shown to bind with high affinity to the malachite green (MG) aptamer, as determined by continuous-wave (CW) ...
  • Lv, Zhiyong; Shi, Wenzhong; Benediktsson, Jon Atli; Xiaojuan, Ning (MDPI AG, 2016-12-15)
    Land cover classification using very high spatial resolution (VHSR) imaging plays a very important role in remote sensing applications. However, image noise usually reduces the classification accuracy of VHSR images. Image spatial filters have been ...
  • Mandal, Sucharita; Sigurdsson, Snorri (Wiley, 2020-05-12)
    1,3‐Bis(diphenylene)‐2‐phenylallyl (BDPA)‐based radicals are of interest as polarizing agents for dynamic nuclear polarization (DNP). For this purpose, a BDPA‐nitroxide biradical, employing a phosphodiester linkage, was synthesized. Contrary to what ...
  • Akhmetzyanov, D.; Schöps, P.; Marko, A.; Kunjir, N. C.; Sigurdsson, Snorri; Prisner, Thomas F. (Royal Society of Chemistry (RSC), 2015)
    Pulsed electron paramagnetic resonance (EPR) spectroscopy is a valuable technique for the precise determination of distances between paramagnetic spin labels that are covalently attached to macromolecules. Nitroxides have commonly been utilised as ...
  • Juliusson, Haraldur Y.; Sigurdsson, Snorri (American Chemical Society (ACS), 2020-02-27)
    Electron paramagnetic resonance (EPR) spectroscopy, coupled with site-directed spin labeling (SDSL), is a useful method for studying conformational changes of biomolecules in cells. To employ in-cell EPR using nitroxide-based spin labels, the structure ...
  • Carney, Daniel; Svavarsson, Halldor; Hemmati, Hafez; Fannin, Alexander; Yoon, Jae; Magnusson, Robert (MDPI AG, 2019-02-21)
    Fabrication and sensor application of a simple plasmonic structure is described in this paper. The sensor element consists of nano-patterned gold film brought about from two-dimensional periodic photoresist templates created by holographic laser ...
  • Ramírez-González, Lucía Magali; Aufaristama, Muhammad; Jónsdóttir, Ingibjörg; Höskuldsson, Ármann; Thordarson, Thorvaldur; Proietti, Nicolas Marino; Kraft, Gilles; McQuilkin, Jamie (IOP Publishing, 2019-04-29)
    This study used optical remote sensors to identify surface hydrothermal alteration and thermal anomalies in Krýsuvík geothermal field. Multispectral Landsat and ASTER satellite images were used to identify hydrothermal alteration minerals and thermal ...
  • Saha, Subham; Jagtap, Anil P.; Sigurdsson, Snorri (Royal Society of Chemistry (RSC), 2015)
    Two aromatic isothiocyanates, derived from isoindoline nitroxides, were synthesized and selectively reacted with 2′-amino groups in RNA. The spin labels displayed limited mobility in RNA, making them promising candidates for distance measurements by ...
  • Licciardi, Giorgio; Chanussot, Jocelyn (Informa UK Limited, 2018-01)
    Managing transmission and storage of hyperspectral (HS) images can be extremely difficult. Thus, the dimensionality reduction of HS data becomes necessary. Among several dimensionality reduction techniques, transform-based have found to be effective ...
  • Jagtap, A. P.; Krstic, I.; Kunjir, N. C.; Hänsel, R.; Prisner, Thomas F.; Sigurdsson, Snorri (Informa UK Limited, 2014-11-20)
    Electron paramagnetic resonance (EPR) spectroscopy is a powerful and widely used technique for studying structure and dynamics of biomolecules under bio-orthogonal conditions. In-cell EPR is an emerging area in this field; however, it is hampered by ...
  • Šlapanská, M; Hecimovic, A; Gudmundsson, Jon Tomas; Hnilica, J; Breilmann, W; Vašina, P; von Keudell, A (IOP Publishing, 2020-02-07)
    The self-organised plasma patterns, known as spokes or ionisation zones in magnetron sputtering discharges, were observed in a wide range of power densities, from low power direct current magnetron sputtering (dcMS) discharge to high power impulse ...