@article{StruszczykLothPeter1998,
  author    = {Struszczyk, Marcin Henryk and Loth, Fritz and Peter, Martin G.},
  title     = {Analysis of deacetylation deree in chitosans from various sources},
  year      = {1998},
  language  = {en}
}
@article{StruszczykLothKoehleretal.1998,
  author    = {Struszczyk, Marcin Henryk and Loth, Fritz and K{\"o}hler, L. A. and Peter, Martin G.},
  title     = {Characterization of chitosan},
  year      = {1998},
  language  = {en}
}
@article{BerthDautzenbergPeter1998,
  author    = {Berth, Gisela and Dautzenberg, Herbert and Peter, Martin G.},
  title     = {Physico-chemical characterization of chitosans varying in degree of acetylation},
  issn      = {0144-8617},
  year      = {1998},
  language  = {en}
}
@article{YenesewMidiwoHeydenreichetal.1998,
  author    = {Yenesew, Abiy and Midiwo, Jacob O. and Heydenreich, Matthias and Peter, Martin G.},
  title     = {Four isoflavanones from stem bark of erythrina sacleuxii},
  year      = {1998},
  language  = {en}
}
@article{YenesewMidiwoMeisneretal.1998,
  author    = {Yenesew, Abiy and Midiwo, Jacob O. and Meisner, M. and Heydenreich, Matthias and Peter, Martin G.},
  title     = {Two prenylated flavanones from stem bark of erythrina burttii},
  year      = {1998},
  language  = {en}
}
@article{Duvinage1998,
  author    = {Duvinage, Brigitte},
  title     = {Baustoffe},
  year      = {1998},
  language  = {de}
}
@article{Duvinage1998,
  author    = {Duvinage, Brigitte},
  title     = {Begriffe : Begriffsbildung},
  year      = {1998},
  language  = {de}
}
@article{ReicheStarkeKleinpeteretal.1998,
  author    = {Reiche, K. B. and Starke, Ines and Kleinpeter, Erich and Holdt, Hans-J{\"u}rgen},
  title     = {Host-guest complexation of imine-type meta-bridged bis(benzo crown ether)s with alkali cations in the gas phase under FAB conditions},
  year      = {1998},
  language  = {en}
}
@article{KleinpeterHeydenreichWolleretal.1998,
  author    = {Kleinpeter, Erich and Heydenreich, Matthias and Woller, Jochen and Wolf, Gunter and Koch, Andreas and Kempter, Gerhard and Pihlaja, Kalevi},
  title     = {Configuration and stereodynamics of exo/endoisomeric push-pull alkenes of pentadiene structure},
  year      = {1998},
  language  = {en}
}
@article{HeydenreichKochRistauetal.1998,
  author    = {Heydenreich, Matthias and Koch, Andreas and Ristau, Thomas and Knoll, Susanne and Heinicke, Jochen and Sieler, Joachim and Niemitz, Matthias and M{\"u}hlst{\"a}dt, Manfred and Kleinpeter, Erich},
  title     = {Conformational analysis of sulfur-containing heterocycles ; part I: synthesis and structural determination of diastereomerically pure 4,6-bis(phenoxymethyl)-1,2,5-trithiepanes},
  year      = {1998},
  language  = {en}
}
@article{HilfertSarodnickKempteretal.1998,
  author    = {Hilfert, Liane and Sarodnick, Gerhard and Kempter, Gerhard and Kleinpeter, Erich},
  title     = {1H, 13C and 15 N NMR study and molecular modelling of 2,3- disubstituted quinoxalines with sterically hinderered aromatic and heteroaromatic substituents},
  year      = {1998},
  language  = {en}
}
@article{KosmellaKoetzShirahamaetal.1998,
  author    = {Kosmella, Sabine and Koetz, Joachim and Shirahama, K. and Liu, J.},
  title     = {The cooperative nature of complex formation in mixed polyelectrolyte-surfactant systems},
  year      = {1998},
  language  = {en}
}
@article{KoetzKosmella1998,
  author    = {Koetz, Joachim and Kosmella, Sabine},
  title     = {Polyelectrolyte complex formation with chitosan},
  year      = {1998},
  language  = {en}
}
@article{StrefferKaatzBaueretal.1998,
  author    = {Streffer, Katrin and Kaatz, Helvi and Bauer, Christian G. and Makower, Alexander and Schulmeister, Thomas and Scheller, Frieder W. and Peter, Martin G. and Wollenberger, Ursula},
  title     = {Application of a sensitive catechol detector for determination of tyrosinase inhibitors},
  year      = {1998},
  language  = {en}
}
@article{MahapatraVetterZuhrtetal.1998,
  author    = {Mahapatra, Susanta and Vetter, Reinhard and Zuhrt, Christian and Nguyen, Huu Tong and Ritschel, Thomas and Z{\"u}licke, Lutz},
  title     = {Ground state potential energy surface, 3D time-dependent intramolecular dynamics and vibrational states of the N2H+ molecular ion},
  year      = {1998},
  language  = {en}
}
@article{BeitzBechmannMitzner1998,
  author    = {Beitz, Toralf and Bechmann, Wolfgang and Mitzner, Rolf},
  title     = {Investigations of reactions of selected Azaarenes with radicals in water, 1. Hydroxyl and sulfate radicals},
  year      = {1998},
  language  = {en}
}
@article{SchneiderMrossBechmann1998,
  author    = {Schneider, Ingo and Mross, A. and Bechmann, Wolfgang},
  title     = {Der Einfluss einer permanenten Mineral{\"o}lkohlenwasserstoff-Kontamination auf Bodenmikroorganismen in der D{\"o}beritzer Heide},
  year      = {1998},
  language  = {de}
}
@article{BenassiBregullaFriedrichetal.1998,
  author    = {Benassi, Rois and Bregulla, Antje and Friedrich, Alwin and Henning, Dietrich and Heydenreich, Matthias and Mickler, Wulfhard and Kleinpeter, Erich and Kempter, Gerhard and Schilde, Uwe and Taddei, F.},
  title     = {NMR spectroscopic and theoretical structural study of 5-exo-methylene-substituted hydantoins},
  year      = {1998},
  language  = {en}
}
@article{CierpiszewskiRusinskaRoszakSzymanowskietal.1998,
  author    = {Cierpiszewski, Ryszard and Rusinska-Roszak, D. and Szymanowski, Jan and Mickler, Wulfhard and Uhlemann, Erhard},
  title     = {Rate of coper extraction and structure of model ß-diketones and 4-acyl-5-pyrazolones},
  year      = {1998},
  language  = {en}
}
@article{KalliesMitzner1998,
  author    = {Kallies, Bernd and Mitzner, Rolf},
  title     = {Structural Properties of Protonated Acyl Derivatives as Studied by Quantum Mechanics},
  year      = {1998},
  abstract  = {Basicities of 16 acyl compounds including selected aldehydes, ketones, esters, amides and ureas in the gas phase and in water were calculated with the Becke3LYP/6-31G* method. Solvent effects were modeled using a polarizable electrostatic continuum representation of the solvent. The properties of the electron densities of protonated molecules were described by localized bond orbitals. Our results suggest that the carbonyl oxygen is the preferred site of protonation for all molecules studied. Calculated pKa values in water range from -12 for aldehydes to + 1.5 for ureas. They agree well with published experimental data. We found that a high basicity of acyl compounds at the carbonyl oxygen is coupled with a large amount of additional resonance stabilization at the carbonyl group. The protonation of the leaving group of eaters, amides and ureas is less preferred, but the basicity difference between C=O and -OR or -NR2 decreases from esters to ureas. Calculated pKa values for this site range from -18 for esters to + 3 for ureas. These values are often not accessible by experiment. The structure of carboxylic acid derivatives protonated at the leaving group is determined by prefragmentation of the molecules into an acylium ion or positively charged isocyanate and an alcohol or amine. (C) 1998 Elsevier Science B.V.},
  language  = {en}
}