@article{KrasnovaVeltriSpengleretal.2013,
  author    = {Krasnova, Hanna and Veltri, Natasha F. and Spengler, Klaus and G{\"u}nther, Oliver},
  title     = {"Deal of the Day" Platforms what drives Consumer loyalty?},
  series = {Business \& information systems engineering : the international journal of Wirtschaftsinformatik},
  volume    = {5},
  journal   = {Business \& information systems engineering : the international journal of Wirtschaftsinformatik},
  number    = {3},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {1867-0202},
  doi       = {10.1007/s12599-013-0268-2},
  pages     = {165 -- 177},
  year      = {2013},
  abstract  = {"Deal of the Day" (DoD) platforms have quickly become popular by offering savings on local services, products and vacations. For merchants, these platforms represent a new marketing channel to advertise their products and services and attract new customers. DoD platform providers, however, struggle to maintaining a stable market share and profitability, because entry and switching costs are low. To sustain a competitive market position, DoD providers are looking for ways to build a loyal customer base. However, research examining the determinants of user loyalty in this novel context is scarce. To fill this gap, this study employs Grounded Theory methodology to develop a conceptual model of customer loyalty to a DoD provider. In the next step, qualitative insights are enriched and validated using quantitative data from a survey of 202 DoD users. The authors find that customer loyalty is in large part driven by monetary incentives, but can be eroded if impressions from merchant encounters are below expectations. In addition, enhancing the share of deals relevant for consumers, i.e. signal-to-noise ratio, and mitigating perceived risks of a transaction emerge as challenges. Beyond theoretical value, the results offer practical insights into how customer loyalty to a DoD provider can be promoted.},
  language  = {en}
}
@article{DolyaRojasKosmellaetal.2013,
  author    = {Dolya, Natalya and Rojas, Oscar and Kosmella, Sabine and Tiersch, Brigitte and Koetz, Joachim and Kudaibergenov, Sarkyt},
  title     = {"One-Pot" in situ frmation of Gold Nanoparticles within Poly(acrylamide) Hydrogels},
  series = {Macromolecular chemistry and physics},
  volume    = {214},
  journal   = {Macromolecular chemistry and physics},
  number    = {10},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1022-1352},
  doi       = {10.1002/macp.201200727},
  pages     = {1114 -- 1121},
  year      = {2013},
  abstract  = {This paper focuses on two different strategies to incorporate gold nanoparticles (AuNPs) into the matrix of polyacrylamide (PAAm) hydrogels. Poly(ethyleneimine) (PEI) is used as both reducing and stabilizing agent for the formation of AuNPs. In addition, the influence of an ionic liquid (IL) (i.e., 1-ethyl-3-methylimidazolium ethylsulfate) on the stability of the nanoparticles and their immobilization in the hydrogel is investigated The results show that AuNPs surrounded by a shell containing PEI and IL, synthesized according to the one-pot approach, are much better immobilized within the PAAm hydrogel. Hereby, the IL is responsible for structural changes in the hydrogel as well as the improved stabilization and embedding of the AuNPs into the polymer gel matrix.},
  language  = {en}
}
@article{Schwarz2013,
  author    = {Schwarz, Anja},
  title     = {"Parallel Societies" of the Past? - Articulations of citizenship's commemorative dimension in Berlin's cityscape},
  series = {Space and Culture},
  volume    = {16},
  journal   = {Space and Culture},
  number    = {3},
  publisher = {Sage Publ.},
  address   = {Thousand Oaks},
  issn      = {1206-3312},
  doi       = {10.1177/1206331213487051},
  pages     = {261 -- 273},
  year      = {2013},
  abstract  = {Historical narratives play an important role in constructing contemporary notions of citizenship. They are sites on which ideas of the nation are not only reaffirmed but also contested and reframed. In contemporary Germany, dominant narratives of the country's modern history habitually focus on the legacy of the Third Reich and tend to marginalize the country's rich and highly complex histories of immigration. The article addresses this commemorative void in relation to Berlin's urban landscape. It explores how the city's multilayered architecture provides locations for the articulation of marginal memoriesand hence sites of urban citizenshipthat are often denied to immigrant communities on a national scale. Through a detailed examination of a small celebration in 1965 that marked the anniversary of the founding of the modern Turkish republic, the article engages with the layers of history that coalesce around such sites in Berlin.},
  language  = {en}
}
@article{KleinpeterKoch2013,
  author    = {Kleinpeter, Erich and Koch, Andreas},
  title     = {(Anti)aromaticity of dehydroannulenes of various ring size proved by the ring current effect in H-1 NMR spectra},
  series = {Tetrahedron},
  volume    = {69},
  journal   = {Tetrahedron},
  number    = {5},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0040-4020},
  doi       = {10.1016/j.tet.2012.12.019},
  pages     = {1481 -- 1488},
  year      = {2013},
  abstract  = {The spatial magnetic properties (Through-Space NMR Shieldings-TSNMRS) of already synthesized dehydro[n]annulenes of various ring size (from C-12 to C-20) have been computed, visualized as Isochemical Shielding Surfaces (ICSS) of various size and direction, and were examined subject to present (anti)aromaticity. For this purpose the thus quantified ring current effect of the macro cycles on proximate protons in proton NMR spectra was employed.},
  language  = {en}
}
@phdthesis{Kneis2013,
  author    = {Kneis, Philipp},
  title     = {(S)aged by culture : Representations of old age in american indian literature and culture},
  publisher = {Peter Lang Edition},
  address   = {Frankfurt am Main, New York},
  isbn      = {978-3-631-63853-8},
  pages     = {298 S.},
  year      = {2013},
  language  = {en}
}
@article{ShainyanKirpichenkoKleinpeteretal.2013,
  author    = {Shainyan, Bagrat A. and Kirpichenko, Svetlana V. and Kleinpeter, Erich and Shlykov, Sergey A. and Osadchiy, Dmitriy Yu and Chipanina, Nina N. and Oznobikhina, Larisa P.},
  title     = {1,3-Dimethy1-3-silapiperidine - synthesis, molecular structure, and conformational analysis by gas-phase electron diffraction, low temperature NMR, IR and Raman Spectroscopy, and quantum chemical calculations},
  series = {The journal of organic chemistry},
  volume    = {78},
  journal   = {The journal of organic chemistry},
  number    = {8},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {0022-3263},
  doi       = {10.1021/jo400289g},
  pages     = {3939 -- 3947},
  year      = {2013},
  abstract  = {The first Si-H-containing azasilaheterocycle, 1,3-dimethyl-3-silapiperidine 1, was synthesized, and its molecular structure and conformational properties were studied by gas-phase electron diffraction (GED), low temperature NMR, IR and Raman spectroscopy and quantum chemical calculations. The compound exists as a mixture of two conformers possessing the chair conformation with the equatorial NMe group and differing by axial or equatorial position of the SiMe group. In the gas phase, the SiMeax conformer predominates (GED: ax/eq = 65(7):35(7)\%,Delta G = 0.36(18) kcal/mol; IR: ax/eq = 62(5):38(5)\%,Delta G = 0.16(7) kcal/mol). In solution, at 143 k the SiMeeq conformer predominates' in the frozen equilibrium (NMR: ax/eq = 31.5(1.5):68.5(1.5)\%, Delta G = -0.22(2) kcal/mol). Thermodynamic parameters of the ring inversion are determined (Delta G(double dagger) = 8.9-9.0 kcal/mol, Delta H-double dagger = 9.6 kcal/mol, Delta S-double dagger = 2.1 eu). High-level quantum chemical calculations :(MP2, G2, CCSD(T)) nicely reproduce the experimental geometry and the predominance of the axial conformer in the gas phase.},
  language  = {en}
}
@article{CaloHenneEugsteretal.2013,
  author    = {Calo, Camilla and Henne, Paul D. and Eugster, Patricia and van Leeuwen, Jacqueline and Gilli, Adrian and Hamann, Yvonne and La Mantia, Tommaso and Pasta, Salvatore and Vescovi, Elisa and Tinner, Willy},
  title     = {1200 years of decadal-scale variability of mediterranean vegetation and climate at Pantelleria Island, Italy},
  series = {The Holocene : an interdisciplinary journal focusing on recent environmental change},
  volume    = {23},
  journal   = {The Holocene : an interdisciplinary journal focusing on recent environmental change},
  number    = {10},
  publisher = {Sage Publ.},
  address   = {London},
  issn      = {0959-6836},
  doi       = {10.1177/0959683613493935},
  pages     = {1477 -- 1486},
  year      = {2013},
  abstract  = {A new sedimentary sequence from Lago di Venere on Pantelleria Island, located in the Strait of Sicily between Tunisia and Sicily was recovered. The lake is located in the coastal infra-Mediterranean vegetation belt at 2 m a.s.l. Pollen, charcoal and sedimentological analyses are used to explore linkages among vegetation, fire and climate at a decadal scale over the past 1200 years. A dry period from ad 800 to 1000 that corresponds to the Medieval Warm Period' (WMP) is inferred from sedimentological analysis. The high content of carbonate recorded in this period suggests a dry phase, when the ratio of evaporation/precipitation was high. During this period the island was dominated by thermophilous and drought-tolerant taxa, such as Quercus ilex, Olea, Pistacia and Juniperus. A marked shift in the sediment properties is recorded at ad 1000, when carbonate content became very low suggesting wetter conditions until ad 1850-1900. Broadly, this period coincides with the Little Ice Age' (LIA), which was characterized by wetter and colder conditions in Europe. During this time rather mesic conifers (i.e. Pinus pinaster), shrubs and herbs (e.g. Erica arborea and Selaginella denticulata) expanded, whereas more drought-adapted species (e.g. Q. ilex) declined. Charcoal data suggest enhanced fire activity during the LIA probably as a consequence of anthropogenic burning and/or more flammable fuel (e.g. resinous Pinus biomass). The last century was characterized by a shift to high carbonate content, indicating a change towards drier conditions, and re-expansion of Q. ilex and Olea. The post-LIA warming is in agreement with historical documents and meteorological time series. Vegetation dynamics were co-determined by agricultural activities on the island. Anthropogenic indicators (e.g. Cerealia-type, Sporormiella) reveal the importance of crops and grazing on the island. Our pollen data suggest that extensive logging caused the local extinction of deciduous Quercus pubescens around ad1750.},
  language  = {en}
}
@article{SchmidtRiemerKarras2013,
  author    = {Schmidt, Bernd and Riemer, Martin and Karras, Manfred},
  title     = {2,2 '-Biphenols via protecting group-free thermal or microwave-accelerated suzuki-miyaura coupling in water},
  series = {The journal of organic chemistry},
  volume    = {78},
  journal   = {The journal of organic chemistry},
  number    = {17},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {0022-3263},
  doi       = {10.1021/jo401398n},
  pages     = {8680 -- 8688},
  year      = {2013},
  abstract  = {User-friendly protocols for the protecting group-free synthesis of 2,2'-biphenols via Suzuki-Miyaura coupling of o-halophenols and o-boronophenol are presented. The reactions proceed in water in the presence of simple additives such as K2CO3, KOH, KF, or TBAF and with commercially available Pd/C as precatalyst. Expensive or laboriously synthesized ligands or other additives are not required. In the case of bromophenols, efficient rate acceleration and short reaction times were accomplished by microwave irradiation.},
  language  = {en}
}
@article{DzambaskiMarkovicKleinpeteretal.2013,
  author    = {Dzambaski, Zdravko and Markovic, Rade and Kleinpeter, Erich and Baranac-Stojanovic, Marija},
  title     = {2-Alkylidene-4-oxothiazolidine S-oxides - synthesis and stereochemistry},
  series = {Tetrahedron},
  volume    = {69},
  journal   = {Tetrahedron},
  number    = {31},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0040-4020},
  doi       = {10.1016/j.tet.2013.05.087},
  pages     = {6436 -- 6447},
  year      = {2013},
  abstract  = {A series of 5-unsubstituted and 5-substituted 2-alkylidene-4-oxothiazolidine-S-oxides were synthesized by the sulfur-oxidation with m-CPBA. The stereochemistry of 5-substituted sulfoxides was determined by means of NMR spectroscopy and DFT theoretical calculations. It was found that the thermodynamically less stable anti-isomer was initially formed in the course of the oxidation, but it underwent epimerization to the mixture enriched in the more stable syn-isomer, during the work-up process. The higher stability of syn-isomers is ascribed to the stronger hyperconjugative sigma(C-H)->sigma*(S-O) interaction versus the weaker sigma(C-C)->sigma*(S-O) delocalization in their anti-counterparts and to the existence of intramolecular 1,5-CH center dot center dot center dot C hydrogen bonds.},
  language  = {en}
}
@article{MutaiHeydenreichThoithietal.2013,
  author    = {Mutai, Peggoty and Heydenreich, Matthias and Thoithi, Grace and Mugumbate, Grace and Chibale, Kelly and Yenesew, Abiy},
  title     = {3-Hydroxyisoflavanones from the stem bark of dalbergia melanoxylon - isolation, antimycobacterial evaluation and molecular docking studies},
  series = {Phytochemistry letters},
  volume    = {6},
  journal   = {Phytochemistry letters},
  number    = {4},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1874-3900},
  doi       = {10.1016/j.phytol.2013.08.018},
  pages     = {671 -- 675},
  year      = {2013},
  abstract  = {Two new 3-hydroxyisoflavanones, (S)-3,4',5-trihydroxy-2',7-dimethoxy-3'-prenylisoflavanone (trivial name kenusanone F 7-methyl ether) and (S)-3,5-dihydroxy-2',7-dimethoxy-2 '',2 ''-dimethylpyrano[5 '',6 '':3',4']isoflavanone (trivial name sophoronol-7-methyl ether) along with two known compounds (dalbergin and formononetin) were isolated from the stem bark of Dalbergia melanoxylon. The structures were elucidated using spectroscopic techniques. Kenusanone F 7-methyl ether showed activity against Mycobacterium tuberculosis, whereas both of the new compounds were inactive against the malaria parasite Plasmodium falciparum at 10 mu g/ml. Docking studies showed that the new compounds kenusanone F 7-methyl ether and sophoronol-7-methyl ether have high affinity for the M. tuberculosis drug target INHA.},
  language  = {en}
}