Browsing Kjemisk institutt by Title

Now showing items 585-604 of 1535

  • High Zn/Al ratios enhance dehydrogenation vs hydrogen transfer reactions of Zn-ZSM-5 catalytic systems in methanol conversion to aromatics 
    Pinilla-Herrero, Irene; Borfecchia, Elisa; Holzinger, Julian; Mentzel, Uffe V.; Joensen, Finn; Lomachenko, Kirill A.; Bordiga, Silvia; Lamberti, Carlo; Berlier, Gloria; Olsbye, Unni; Svelle, Stian; Skibsted, Jørgen; Beato, Pablo (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    Two series of Zn-ZSM-5 catalysts were prepared by ion exchanging two commercial zeolites with different Si/Al ratios (40 and 15) with increasing Zn loadings. The nature of the Zn sites in the zeolite was studied by ...
  • High-Resolution Crystal Structures Elucidate the Molecular Basis of Cholera Blood Group Dependence 
    Heggelund, Julie Elisabeth; Burschowsky, Daniel; Bjørnestad, Victoria Ariel; Hodnik, Vesna; Anderluh, Gregor; Krengel, Ute (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    Cholera is the prime example of blood-group-dependent diseases, with individuals of blood group O experiencing the most severe symptoms. The cholera toxin is the main suspect to cause this relationship. We report the ...
  • High-Temperature Structural and Electrical Properties of BaLnCo2O6 Positrodes 
    Szpunar, Iga; Strandbakke, Ragnar; Sørby, Magnus Helgerud; Wachowski, Sebastian Lech; Balaguer, Maria; Tarach, Mateusz; Serra, José M.; Witkowska, Agnieszka; Dzik, Ewa; Norby, Truls Eivind; Gazda, Maria; Mielewczyk-Gryń, Aleksandra (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The application of double perovskite cobaltites BaLnCo2O6−δ (Ln = lanthanide element) in electrochemical devices for energy conversion requires control of their properties at operating conditions. This work presents a study ...
  • High-throughput EDA – automated approaches to directly link fractionation, biotesting and identification 
    Froment, Jean (Doctoral thesis / Doktoravhandling, 2017)
    Around three decades ago, environmental chemists developed a new technique to identify pollutants present in complex environmental mixtures: effect-directed analysis (EDA). EDA uses chemical tools (for the extraction, ...
  • Higher measured than modeled ozone production at increased NOx levels in the Colorado Front Range 
    Baier, Bianca C; Brune, William H; Miller, David O; Blake, Donald; Long, Russell; Wisthaler, Armin; Cantrell, Christopher; Fried, Alan; Heikes, Brian; Brown, Steven; McDuffie, Erin; Flocke, Frank; Apel, Eric; Kaser, Lisa; Weinheimer, Andrew (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Chemical models must correctly calculate the ozone formation rate, P(O3), to accurately predict ozone levels and to test mitigation strategies. However, air quality models can have large uncertainties in P(O3) calculations, ...
  • Highly automated nano-LC/MS-based approach for thousand cell-scale quantification of side chain-hydroxylated oxysterols[S] 
    Røberg-Larsen, Hanne; Lund, Kaja; Vehus, Tore; Hoen, Nina; Vesterdal, Caroline; Misaghian, Dorna; Olsen, Peter Angell; Krauss, Stefan; Wilson, Steven Ray Haakon; Lundanes, Elsa (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    Iso-octyl chain-hydroxylated oxysterols were determined in attomoles per 10,000 cells concentrations in 10,000–80,000 cultured pancreatic adenocarcinoma cells, using a sensitive, highly automated nano-LC-ESI-MS-based method. ...
  • Highly Correlated Hydride Ion Tracer Diffusion in SrTiO3–xHx Oxyhydrides 
    Liu, Xin; Bjørheim, Tor Svendsen; Vines, Lasse; Fjellvåg, Øystein; Granerød, Cecilie Skjold; Prytz, Øystein; Yamamoto, Takafumi; Kageyama, Hiroshi; Norby, Truls Eivind; Haugsrud, Reidar (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Mixed oxide hydride anion systems constitute a novel class of materials exhibiting intriguing properties such as solid-state hydride ion conduction and fast anion exchange. In this contribution we derive the kinetics of ...
  • Highly effective conversion of CO2 into light olefins abundant in ethene 
    Wang, Sen; Zhang, Li; Wang, Pengfei; Liu, Xingchen; Chen, Yanyan; Qin, Zhangfeng; Dong, Mei; Wang, Jianguo; He, Lin; Olsbye, Unni; Fan, Weibin (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    Conversion of CO2 into light olefins is an effective strategy for sustainable utilization of fossil energy and biomass. However, highly selective production of specific olefin, such as ethene, from CO2 hydrogenation is a ...
  • Highly selective hydrogenation of amides catalysed by a molybdenum pincer complex: scope and mechanism 
    Leischner, Thomas; Artus Suarez, Lluis; Spannenberg, Anke; Junge, Kathrin; Nova, Ainara; Beller, Matthias (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    A series of molybdenum pincer complexes has been shown for the first time to be active in the catalytic hydrogenation of amides. Among the tested catalysts, Mo-1a proved to be particularly well suited for the selective C–N ...
  • Highly selective hydrogenation of CO2 to propane over GaZrO x/H-SSZ-13 composite 
    Wang, Sen; Zhang, Li; Wang, Pengfei; Jiao, Weiyong; Qin, Zhangfeng; Dong, Mei; Wang, Jianguo; Olsbye, Unni; Fan, Weibin (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    Selective hydrogenation of CO2 into value-added hydrocarbons, particularly single products, is of great interest. However, this is a challenge because of the simultaneous occurrence of numerous competing elementary reactions. ...
  • HiPIMS deposition and characterization of amorphous ZnOxNy for solar cell applications 
    Sødahl, Elin Dypvik (Master thesis / Masteroppgave, 2020)
  • Holotoxin disassembly by protein disulfide isomerase is less efficient for Escherichia coli heat-labile enterotoxin than cholera toxin 
    Serrano, Albert; Guyette, Jessica L.; Heim, Joel Benjamin; Taylor, Michael; Cherubin, Patrick; Krengel, Ute; Teter, Kenneth; Tatulian, Suren (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Cholera toxin (CT) and Escherichia coli heat-labile enterotoxin (LT) are structurally similar AB 5 -type protein toxins. They move from the cell surface to the endoplasmic reticulum where the A1 catalytic subunit ...
  • How detergents dissolve polymeric micelles: Kinetic pathways of hybrid micelle formation in SDS and block copolymer mixtures 
    Myhre, Synne; Amann, Matthias; Willner, Lutz; Knudsen, Kenneth Dahl; Lund, Reidar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Mixtures of amphiphilic polymers and surfactants are used in a wide range of applications, e.g., pharmaceuticals, detergents, cosmetics, and drug delivery systems. Still, many questions remain on how the structure and, in ...
  • How Solvent Dynamics Controls the Schlenk Equilibrium of Grignard Reagents: A Computational Study of CH3MgCl in Tetrahydrofuran 
    Peltzer, Raphael Mathias; Eisenstein, Odile; Nova, Ainara; Cascella, Michele (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The Schlenk equilibrium is a complex reaction governing the presence of multiple chemical species in solution of Grignard reagents. The full characterization at the molecular level of the transformation of CH3MgCl into ...
  • How Surface Species Drive Product Distribution during Ammonia Oxidation: An STM and Operando APXPS Study 
    Ivashenko, Oleksii; Johansson, Niclas; Pettersen, Christine; Jensen, Martin; Zheng, Jian; Schnadt, Joachim; Sjåstad, Anja Olafsen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The oxidation of ammonia is a key reaction for the production of artificial fertilizers and for environmental protection. Depending on the area of application, the catalytic reaction needs to be tuned toward the production ...
  • Hybrid Functional Study on Electronic and Optical Properties of the Dopants in Anatase TiO2 
    Wanniarachchi, Chapa; Arunasalam, Thevakaran; Ravirajan, Punniyamoorthy; Velauthapillai, Dhayalan; Ponniah, Vajeeston (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    TiO2 was known as a golden heterogeneous photocatalyst due to its chemical stability, low cost, nontoxicity, and strong oxidizing power. However, anatase TiO2 predominantly absorbs the photon energy in the ultraviolet ...
  • Hybrid particle-field model for conformational dynamics of peptide chains 
    Bore, Sigbjørn Løland; Milano, Giuseppe; Cascella, Michele (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    We propose the first model of a polypeptide chain based on a hybrid-particle field approach. The intramolecular potential is built on a two-bead coarse grain mapping for each amino acid. We employ a combined potential for ...
  • Hybrid particle-field molecular dynamics simulations of charged amphiphiles in an aqueous environment 
    Kolli, Hima Bindu; De Nicola, Antonio; Bore, Sigbjørn Løland; Schäfer, Ken; Diezemann, Gregor; Gauss, Jürgen; Kawakatsu, Toshihiro; Lu, Zhong-Yuan; Zhu, You-Liang; Milano, Giuseppe; Cascella, Michele (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    We develop and test specific coarse-grained models for charged amphiphilic systems such as palmitoyloleoylphosphatidylglycerol (POPG) lipid bilayer and sodium dodecyl sulfate (SDS) surfactant in an aqueous environment, to ...
  • Hybrid Particle-Field Molecular Dynamics Under Constant Pressure 
    Bore, Sigbjørn Løland; Kolli, Hima Bindu; De Nicola, Antonio; Byshkin, Maksym; Kawakatsu, Toshihiro; Milano, Giuseppe; Cascella, Michele (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    Hybrid particle-field methods are computationally efficient approaches for modeling soft matter systems. So far, applications of these methodologies have been limited to constant volume conditions. Here, we reformulate ...
  • Hydration thermodynamics of oxides. Effects of defect associations 
    Løken, Andreas (Doctoral thesis / Doktoravhandling, 2017)
    Mye av dagens høyteknologiske utstyr og apparater ville sannsynligvis ikke sett dagens lys hvis ikke det hadde vært for materialteknologiens stadige fremskritt. I jakten på stadige forbedringer av slik teknologi må man ...