TY  - INPR
A1  - Nazaikinskii, Vladimir
A1  - Schulze, Bert-Wolfgang
A1  - Sternin, Boris
T1  - Localization problem in index theory of elliptic operators
N2  - This is a survey of recent results concerning the general index locality principle, associated surgery, and their applications to elliptic operators on smooth manifolds and manifolds with singularities as well as boundary value problems. The full version of the paper is submitted for publication in Russian Mathematical Surveys.
T3  - Preprint - (2001) 34 
KW  - elliptic operators
KW  - index theory
KW  - surgery
KW  - relative index
KW  - manifold with singularities
Y1  - 2001
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-26175
ER  - 
TY  - BOOK
A1  - Sabrow, Martin
T1  - Herr und Hanswurst : das tragische Schicksal des Hofgelehrten Jacob Paul von Gundling
Y1  - 2001
SN  - 3-421-05512-2
PB  - Dt. Verl.-Anst
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Struszczyk, Marcin Henryk
A1  - Pospieszny, Henryk
A1  - Schanzenbach, Dirk
A1  - Peter, Martin G.
T1  - Biodegradation of various chitosans using Aspergillus fumigatus
Y1  - 2001
ER  - 
TY  - THES
A1  - Sabrow, Martin
T1  - Das Diktat des Konsenses : Geschichtswissenschaft in der DDR 1949 - 1969
T2  - Ordnungssysteme : Studien zur Ideengeschichte der Neuzeit
Y1  - 2001
SN  - 3-486-56559-1
VL  - 8
PB  - Oldenbourg
CY  - München
ER  - 
TY  - BOOK
ED  - Sabrow, Martin
T1  - Die Grenzen der Entgrenzung : zehn Jahre Deutsche Einheit
T3  - Helmstedter Colloquien
Y1  - 2001
VL  - 3
PB  - Akademie Verl.-Anst.
CY  - Leipzig
ER  - 
TY  - BOOK
A1  - Sabrow, Martin
A1  - Baberowski, Joerg
A1  - Conze, Eckart
A1  - Gassert, Philipp
T1  - Geschichte ist immer Gegenwart : vier Thesen zur Zeitgeschichte
Y1  - 2001
SN  - 3-421-05564-5
PB  - DVA
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Burkart, Michael
T1  - River corridor plants (Stromtalpflanzen) in Central European lowland : a review of a poorly understood plant distribution pattern
N2  - Aim and Location In Central European lowland certain plant species grow mainly or exclusively in the corridors of large rivers. In German-speaking plant geography, they are known as "Stromtalpflanzen". The aim of this paper is to review the literature about definitions, explanations and species characteristics and to suggest future directions in research concerning this species group. Results A preliminary list contains 129 ecologically heterogeneous plant species. The mechanisms generating the peculiar distribution pattern may include hydrochory along river corridors, high level of disturbance by water, variable water availability including inundation and summer drought, warm summers, and high nutrient supply on alluvial soils. There is evidence from observational studies for all above mechanisms. However, none of them has been tested experimentally. Demographic data of river corridor plants is limited to very few species, including mainly invasive annuals (Artemisia annua, Bidens frondosa, Cuscuta campestris, Xanthium albinum) and annual (hemi)parasites (Cuscuta campestris, Melampyrum cristatum). Metapopulation studies do not exist to date for European species. part from their habitat requirements, river corridor plants were grouped according to their similarities in overall distribution pattern or in their distribution within particular river corridors. Main conclusions River corridor plants include a high proportion of threatened plant species. In order to preserve them, and in order to understand the mechanisms generating the peculiar distribution pattern, much more has to be known about their population biology and metapopulation dynamics.
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Kleinpeter, Erich
A1  - Grotjahn, Manuela
A1  - Klinka, Karel D.
A1  - Drexler, Hans-Joachim
A1  - Holdt, Hans-Jürgen
T1  - Conformational and complexational study of some maleonitrile mixed oxadithia crown ethers by NMR spectroscopy and molecular modelling
N2  - The macrocyclic ring interconversion of four maleonitrile mixed oxadithia crown ethers of variable ring size, mn-12-S2O2, mn-15-S2O3, mn-18-S2O4 and fn-12-S2O2, were studied by 1H and 13C NMR spectroscopy and by molecular modelling. The barriers to ring interconversion were estimated using variable temperature NMR spectroscopy and from the calculated activation energies, together with the spin-lattice relaxation times of the CH2 carbon atoms, conclusions were drawn regarding the intramolecular flexibility of the crown ethers in both the free state as well as the complexed state incorporating either AgI, BiIII, SbIII, PdII or PtII metal cations. Furthermore, both the stoichiometry of the complexes and the coordination sites of the crown ethers to the various cations were also clearly implicated. Molecular modelling was also utilised to ascertain the preferred conformers of the four compounds and their corresponding complexes, the results of which corroborated the experimental NMR results to a high degree.
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Grotjahn, Manuela
A1  - Lehmann, S.
A1  - Aurich, Ines
A1  - Holdt, Hans-Joachim
A1  - Kleinpeter, Erich
T1  - NMR spectroscopic and molecular modelling studies of the solution structure and complexational behaviour of some bis(benzocrown ether)s
N2  - Structural information about the bis(benzo crown ether)s I-VI and their complexes with alkali metal cations was deduced from the 13C NMR chemical shifts, the salt-induced 1H and 13C chemical shifts and the vicinal 1H,1H coupling constants. Especially the isomerism with respect to the amide O=C - NH bonds and imine fragments were assigned by various useful NMR parameters ( C=O, 1JN,H, 1JC,H) and proved to be E,E-anti,anti. Furthermore, stereochemical information about preferred conformations about flexible bonds was obtained from 2D ROESY NMR experiments. The complex formation (2:1 complexes and sandwich-like 1:1 complexes, respectively) were determined also by 23Na NMR spectroscopy. The conformational study of the crown ethers was accompanied and corroborated by molecular dynamics and quantum chemical calculations.
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Holdt, Hans-Jürgen
A1  - Drexler, Hans-Joachim
A1  - Starke, Ines
A1  - Grotjahn, Manuela
A1  - Kleinpeter, Erich
T1  - Homologous series of the PdCl2 and PtCl2 complexes of maleonitrile-dithiacrown ethers : synthesis, crystal structures, NMR spectroscopy and mass spectrometry
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Beitz, Toralf
A1  - Koetz, Joachim
A1  - Wolf, Gunter
A1  - Kleinpeter, Erich
A1  - Friberg, Stig E.
T1  - Poly(N-vinyl-2-pyrrolidone) and 1-octyl-2-pyrrolidinone modified ionic microemulsions
Y1  - 2001
ER  - 
TY  - THES
A1  - Vorndran, Katja Marianne
T1  - Einfache Decarbonylierungen und stereoselektive Oxidationen von Cyclohexadienen und Cyclohexenen
N2  - Zusammenfassend konnte im Rahmen dieser Arbeit das Synthesepotential von Cyclohexadienen und Cyclohexenen deutlich erweitert werden. Die Darstellung der 1-Alkylcyclohexa-2,5-dien-1-carbonsäuren erfolgte mittels Birch-Reduktion in flüssigem Ammoniak und anschließender Umsetzung der intermediär entstehenden Dianionen mit Alkylhalogeniden. So konnte ausgehend von verschiedenen Benzoesäurederivaten eine Reihe interessanter Cyclohexadiene in sehr guten Ausbeuten synthetisiert werden. Erstmals gelangen säurekatalysierte Decarbonylierungen von Cyclohexadiencarbonsäuren, was die einfache Synthese substituierter Aromaten in ausgezeichneten Ausbeuten ermöglichte. In dieser Arbeit wird der Reaktionsmechanismus vorgestellt, welcher durch den Nachweis von Kohlenmonoxid in der Gasphase der Reaktionslösung durch IR-Spektroskopie untermauert wird. Bei der säurekatalysierten Umsetzung von 3-alkylsubstituierten Cyclohexadien-carbonsäuren entstanden neben den erwarteten Aromaten Lactone in ca. 50% Ausbeute. Schließlich zeigen die untersuchten Singulettsauerstoff-En-Reaktionen, der im ersten Teil dargestellten Cyclohexadiene und Lactone, durchweg hohe Regioselektivitäten und lieferten durch elektrostatische Wechselwirkungen und konformative Effekte zum Teil sehr gute Diastereoselektivitäten. Die auxiliarkontrollierte Photooxygenierungen von Cyclohexenon welches mit verschiedenen Weinsäureestern ketalisiert wurde, zeigten jedoch keine bevorzugte p-Facialität des Singulettsauerstoffs.
N2  - In this dissertation thesis it was possible to extend the synthetical potential of cyclohexadienes and cyclohexenes with partially newly developed and very efficient synthetic pathways. The alkylcyclohexadiene carboxylic acids were synthesized in good yields via well known Birch-reduction procedure in liquid ammonia from a broad variety of substituted benzoic acid derivatives. A wide range of alkylhalides were subsequently added to the resulting dianion. We were able to decarbonylize the cyclohexadienes through acid catalyses, which leads to ipso-substituted aromatics in excellent yields. The study presents the postulated mechanism, which is supported by the proof of carbon monoxide in the gas phase of the reactionmixture with IR-spectroscopy. When 3-alkylsubstituted cyclohexadiene carboxylic acids were subjected to the acid catalyses they gave lactones in up to 50% yield as side products of the aromatization product.The cyclohexadienes and lactones were used as substrates in singlet oxygen-en-reactions with photochemically induced singulet oxygen. The products showed high regioselectivitiy and partially high diastereoselectivity which is caused by electrostatic interaction and conformativ effects of the reaction intermediates. Experiments to induce auxiliary controlled photooxygenations of cyclohexenones, which were ketalysed with different chiral tartaric acid esters leaded to poor diastereoselectivity and a diverse mixture of isomers.
KW  - Cyclohexadienderivate ; Chemische Synthese ; Birch-Reduktion ; Decarbonylierung | Cyclohexadienderivate ; Photooxidation ; Stereoselektive Reaktion ;
KW  - Decarbonylierung
KW  - Birch-Reduktion
KW  - Photooxygenierung
KW  - Singulettsauerstoff
KW  - Cyclohexadien
KW  - Decarbonylation
KW  - Birch-Reduction
KW  - Photooxygenation
KW  - Singletoxygen
KW  - Cylcohexadiene
Y1  - 2001
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-0000331
ER  - 
TY  - JOUR
A1  - Schael, Frank
A1  - Reich, Oliver
T1  - In-situ-Analytik heterogener Medien mit frequenz- und leistungsmodulierten Diodenlasern
N2  - Electronic intensity and frequency modulation of diode lasers enables new perspectives for highly sensitive analytical in-situ techniques. For analyis of "heterogeneous" media, which may consist of coexisting gaseous, liquid, and solid phases and often show multiple light scattering, non-invasive techniques with outstanding performance characteristics can be developed. Analysis of photon density waves launched by intensity-modulated lasers provide an elegant way for the determination of absorption and scattering coefficients of multiple scattering media. The absorption coefficient can be used for qualitative and quantitative analysis of chemical constituents (which absorb in the range of the laser wavelengths). The scattering coefficient allows characterization of physical and morphological properties of the sample. In the current work, applicability of appropriate radiation transport models was investigated with simple light scattering solutions and compared with results obtained from the treatment according to the theory of Kubelka and Munk. Measurements of human blood samples are discussed. A new method for determination of water vapor partial pressure in a polyurethane foam with a frequency-modulated external cavity diode laser is discussed.
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Schael, Frank
A1  - Engelhard, Sonja
A1  - Reich, Oliver
T1  - Optische Sensorik für die in-situ-Analytik von Brauprozessen
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Ketelhut, Kerstin
A1  - Bittmann, Frank
T1  - Bewegungsmangel im Kindesalter
Y1  - 2001
ER  - 
TY  - GEN
A1  - Kliegl, Reinhold
A1  - Philipp, Doris
A1  - Luckner, Matthias
A1  - Krampe, Ralf T.
T1  - Face Memory Skill Acquisition
T3  - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - paper 246 
Y1  - 2001
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-57067
ER  - 
TY  - JOUR
A1  - Roessner, Ute
A1  - Luedemann, A.
A1  - Brust, D.
A1  - Fiehn, Oliver
A1  - Linke, Thomas
A1  - Willmitzer, Lothar
A1  - Fernie, Alisdair R.
T1  - Metabolic profiling allows comprehensive phenotyping of genetically or environmentally modified plant systems
Y1  - 2001
SN  - 1040-4651
ER  - 
TY  - JOUR
A1  - Kliegl, Reinhold
T1  - Face memory skill acquisition
Y1  - 2001
SN  - 0-8261-1372-9
ER  - 
TY  - JOUR
A1  - Oberauer, Klaus
A1  - Demmrich, Anke
A1  - Mayr, Ulrich
A1  - Kliegl, Reinhold
T1  - Dissociating retention and access in working memory : an age-comparative study of mental arithmetic
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Oberauer, Klaus
A1  - Kliegl, Reinhold
T1  - Beyond resources : formal models of complexity effects in age differences in working memory
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Kliegl, Reinhold
T1  - Memory and aging, Cognitive psychology of
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Engbert, Ralf
A1  - Kliegl, Reinhold
T1  - Mathematical models of eye movements in reading : a possible role for autonomous saccades
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Krampe, Ralf-Thomas
A1  - Engbert, Ralf
A1  - Kliegl, Reinhold
T1  - Age-specific problems in rhythmic timing
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Mayr, Ulrich
A1  - Spieler, D.
A1  - Kliegl, Reinhold
T1  - Untitled - Introduction
Y1  - 2001
ER  - 
TY  - BOOK
ED  - Mayr, Ulrich
ED  - Spieler, D.
ED  - Kliegl, Reinhold
T1  - Ageing and executive control
T3  - European Journal of Cognitive Psychology : Special Issues
Y1  - 2001
SN  - 1-84169-908-x
VL  - 13
PB  - Psychology Press
CY  - Hove
ER  -