Auflistung nach Schlagwort "chemical structure"

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  • Comparative in vitro study and biomechanical testing of two different magnesium alloys 
    Weizbauer, Andreas; Modrejewski, Christian; Behrens, Sabine; Klein, Helmut; Helmecke, Patrick; Seitz, Jan-Marten; Windhagen, Henning; Möhwald, Kai; Reifenrath, Janin; Waizy, Hazibullah (London : SAGE Publications Ltd., 2014)
    In this in vitro study, magnesium plates of ZEK100 and MgCa0.8 alloy similar to common titanium alloy osteosynthesis plates were investigated as degradable biomedical materials with a focus on primary stability. Immersion ...
  • Control over Structure and Properties in Nanocrystal Aerogels at the Nano-, Micro-, and Macroscale 
    Rusch, Pascal; Zámbó, Dániel; Bigall, Nadja C. (Washington, DC : American Chemical Society Publ. (ACS), 2020)
    The assembly of individual colloidal nanocrystals into macroscopic solvogels and aerogels introduced a new exciting type of material into the class of porous architectures. In these so-called nanocrystal gels, the structure ...
  • Depinning transitions between adsorbate chains coupled by Friedel oscillations 
    Godzik, G.; Block, T.; Pfnür, Herbert (College Park, MD : American Physical Society, 2003)
    The low coverage phase transitions of the p(8×1) and the p(5×1) chain structures of the Sr/Mo(112) system have been investigated with low-energy electron diffraction (LEED) at constant coverages. It turns out that both ...
  • Direct limits for scalar field dark matter from a gravitational-wave detector 
    Vermeulen, Sander M.; Relton, Philip; Grote, Hartmut; Raymond, Vivien; Affeldt, Christoph; Bergamin, Fabio; Bisht, Aparna; Brinkmann, Marc; Danzmann, Karsten; Doravari, Suresh; Kringel, Volker; Lough, James; Lück, Harald; Mehmet, Moritz; Mukund, Nikhil; Nadji, Séverin; Schreiber, Emil; Sorazu, Borja; Strain, Kenneth A.; Vahlbruch, Henning; Weinert, Michael; Willke, Benno; Wittel, Holger (London [u.a.] : Nature Publ. Group, 2021)
    The nature of dark matter remains unknown to date, although several candidate particles are being considered in a dynamically changing research landscape1. Scalar field dark matter is a prominent option that is being ...
  • Femtosecond laser induced step-like structures inside transparent hydrogel due to laser induced threshold reduction 
    Saerchen, Emanuel; Liedtke-Gruener, Susann; Kopp, Maximilian; Heisterkamp, Alexander; Lubatschowski, Holger; Ripken, Tammo (San Francisco, CA : Public Library of Science (PLoS), 2019)
    In the area of laser material processing, versatile applications for cutting glasses and transparent polymers exist. However, parasitic effects such as the creation of step-like structures appear when laser cutting inside ...
  • High yield synthesis and structures of some achiral and chiral (diphosphine)tetracarbonylchromium(0) chelate complexes with tetracarbonyl(norbornadiene)chromium(0) as complexation reagent 
    Strotmann, Markus; Wartchow, Rudolf; Butenschön, Holger (Gainesville : Arkat USA, 2004)
    Tetracarbonyl(norbornadiene)chromium(0) was used as complexation reagent in the synthesis of tetracarbonylchromium chelate complexes of dppe, dppb, dppf, DIOP, BINAP, and Tol-BINAP. In all cases the reactions took place ...
  • Interaction of lignans with human sex hormone binding globulin (SHBG) 
    Schöttner, M.; Ganßer, D.; Spiteller, G. (Berlin : De Gruyter, 1997)
    Lignans bind to sex hormone-binding globulin (SHBG). The lignan with the highest binding affinity is (±)-3,4-divanillyltetrahydrofuran. In a double Stobbe condensation - without use of protecting groups - a wide variety ...
  • Minimum Information about a Biosynthetic Gene cluster 
    Medema, Marnix H.; Kottmann, Renzo; Yilmaz, Pelin; Cummings, Matthew; Biggins, John B.; Cox, Russell J.; et al. (London : Nature Publishing Group, 2015)
    A wide variety of enzymatic pathways that produce specialized metabolites in bacteria, fungi and plants are known to be encoded in biosynthetic gene clusters. Information about these clusters, pathways and metabolites is ...
  • Nonradiating anapole modes in dielectric nanoparticles 
    Miroshnichenko, Andrey E.; Evlyukhin, Andrey B.; Yu, Ye Feng; Bakker, Reuben M.; Chipouline, Arkadi; Kuznetsov, Arseniy I.; Luk'yanchuk, Boris; Chichkov, Boris; Kivshar, Yuri S. (London : Nature Publishing Group, 2015)
    Nonradiating current configurations attract attention of physicists for many years as possible models of stable atoms. One intriguing example of such a nonradiating source is known as "anapole". An anapole mode can be ...
  • Optimizing dirhodium(II) tetrakiscarboxylates as chiral NMR auxiliaries 
    Mattiza, Jens T.; Fohrer, Joerg G.G.; Duddeck, Helmut; Gardiner, Michael G.; Ghanem, Ashraf (Cambridge : Royal Society of Chemistry, 2011)
    Thirteen enantiopure paddlewheel-shaped dirhodium(II) tetrakiscarboxylate complexes have been checked for their efficiency in the dirhodium method (differentiation of enantiomers by NMR spectroscopy); six of them are new. ...
  • The oxygen-independent coproporphyrinogen III oxidase HemN utilizes harderoporphyrinogen as a reaction intermediate during conversion of coproporphyrinogen III to protoporphyrinogen IX 
    Rand, Katrin; Noll, Claudia; Schiebel, Hans Martin; Kemken, Dorit; Dülcks, Thomas; Kalesse, Markus; Heinz, Dirk W.; Layer, Gunhild (Berlin : De Gruyter, 2010)
    During heme biosynthesis the oxygen-independent coproporphyrinogen III oxidase HemN catalyzes the oxidative decarboxylation of the two propionate side chains on rings A and B of coproporphyrinogen III to the corresponding ...
  • Oxygenated bisabolane fucosides from Carthamus lanatus L. 
    Mikhova, Bozhanka; Duddeck, Helmut; Taskova, Rilka M.; Mitova, Maya; Alipieva, Kalina (Berlin : De Gruyter, 2004)
    The aerial parts of Carthamus lanatus (Asteraceae) afforded four new oxygenated bisabolane fucosides, 10-hydroperoxy-bisabola-2,11-diene 7-O-β-D-fucopyranoside, 11-hydroperoxy-bisabola-2,9-diene 7-O-β-D-fucopyranoside, ...
  • A practical synthesis of Rho-Kinase inhibitor Y-27632 and fluoro derivatives and their evaluation in human pluripotent stem cells 
    Paleek, Jiri; Zweigerdt, Robert; Olmer, Ruth; Martin, Ulrich; Kirschning, Andreas; Dräger, Gerald (Cambridge : Royal Society of Chemistry, 2011)
    A practical synthesis of the Rho-Kinase inhibitor Y-27632 and two new fluoro derivatives was achieved in seven steps and with a good overall yield of 45% starting from commercially available (R)-1-phenylethylamine. Compared ...
  • Restructuring of the Ge(100) surface by Na chains 
    Ernst, Wolfgang; Jonas, K.-L.; von Oeynhausen, V.; Tegenkamp, Christoph; Pfnür, Herbert (College Park, MD : American Physical Society, 2003)
    The Na-induced surface structures on Ge(100) at concentrations below 0.1 monolayer (ML) have been investigated with low-energy electron diffraction and with scanning tunneling microscopy (STM). Annealing and partial ...
  • Shot noise in tunneling through a single quantum dot 
    Nauen, A.; Hohls, Frank; Maire, Niels; Pierz, Klaus; Haug, Rolf J. (College Park, MD : American Physical Society, 2004)
    We investigate the noise properties of a zero-dimensional InAs quantum dot (QD) embedded in a GaAs-AlAs-GaAs tunneling structure. We observe an approximately linear dependence of the Fano factor and the current as a function ...
  • Stepwise synthesis of sandwich-structured composite zeolite membranes with enhanced separation selectivity 
    Huang, Aisheng; Wang, Nanyi; Caro, Jürgen (Cambridge : Royal Society of Chemistry, 2012)
    Sandwich-structured composite zeolite membranes with enhanced hydrogen selectivity were prepared on porous α-Al 2O 3 supports by using 3-aminopropyltriethoxysilane as an interlayer. © 2012 The Royal Society of Chemistry.
  • Structural evidence of anomeric effects in the anesthetic isoflurane 
    Lesarri, Alberto; Vega-Toribio, Alicia; Suenram, Richard D.; Brugh, Dale J.; Nori-Shargh, Davood; Boggs, James E.; Grabow, Jens-Uwe (Cambridge : Royal Society of Chemistry, 2011)
    The conformational and structural properties of the inhalational anesthetic isoflurane (1-chloro-2,2,2-trifluoroethyl difluoromethyl ether) have been probed in a supersonic jet expansion using Fourier-transform microwave ...
  • Supramolecular structure of the mitochondrial oxidative phosphorylation system 
    Boekema, Egbert J.; Braun, Hans-Peter (Bethesda, Md. : ASBMB Publications, 2007)
    The protein complexes of the mitochondrial oxidative phosphorylation system were recently reported to form supramolecular assemblies termed respiratory supercomplexes or respirasomes. These supercomplexes are considered ...
  • Targeting heat-shock-protein 90 (Hsp90) by natural products: Geldanamycin, a show case in cancer therapy 
    Franke, Jana; Eichner, Simone; Zeilinger, Carsten; Kirschning, Andreas (Cambridge : Royal Society of Chemistry, 2013)
    Covering: 2005 to 2013 In this review recent progress in the development of heat shock proteins (Hsp90) in oncogenesis is illuminated. Particular emphasis is put on inhibitors such as geldanamycin and analogues that serve ...
  • Total synthesis of noricumazole B establishes D-arabinose as glycan unit 
    Barbier, Jenny; Gerth, Klaus; Jansen, Rolf; Kirschning, Andreas (Cambridge : Royal Society of Chemistry, 2012)
    The total synthesis of noricumazole B, a secondary metabolite from myxobacteria, was achieved. It established the glycan moiety to be D-α-arabinoside. © The Royal Society of Chemistry 2012.