@article{634, abstract = {{Kunden erwarten von Industrieunternehmen heute hochwertige Sachgüter, die in unterschiedlichen Varianten und kurzer Zeit preiswert zu liefern und um bedarfsgerechte Serviceleistungen zu ergänzen sind. Diese gestiegenen Anforderungen werden auf die gesamte Zulieferkette übertragen und haben auch große Auswirkungen auf Unternehmen des tertiären Sektors.}}, author = {{Hinrichsen, Sven and Heßeler, Christiane and Luczak, Holger}}, issn = {{0720-1214}}, journal = {{Qualität und Zuverlässigkeit (QZ)}}, keywords = {{Dienstleistung, Fabrikplanung, Qualitätssicherung}}, number = {{11}}, pages = {{1118--1119}}, publisher = {{Hanser}}, title = {{{Frischer Wind - Dienstleistungsqualität nur durch ganzheitliches Qualitätsverständnis}}}, volume = {{47}}, year = {{2002}}, } @article{6775, author = {{Lohr, Mathias and Mitzka, Hanns-Dieter }}, issn = {{0930-293X }}, journal = {{Veröffentlichungen des Naturkundlichen Vereins Egge-Weser : Naturkundlicher Verein Egge-Weser }}, pages = {{31--50}}, publisher = {{Naturkundlicher Verein Egge-Weser }}, title = {{{Die Libellenfauna der Weserrandsenke "Taubenborn" bei Höxter ( Insecta: Odonata )}}}, volume = {{14}}, year = {{2001}}, } @misc{2963, author = {{Hass, V.C. and Lane, P. and Hoffmann, M. and Frahm, Björn and Schwabe, J.-O. and Pörtner, R. and Munack, A.}}, booktitle = {{Computer Applications in Biotechnology, 2001: Modelling, Monitoring and Control of Biotechnological Processes}}, isbn = {{ 0080436811 }}, issn = {{ 1474-6670 }}, location = {{Québec City, Québec, Canada}}, pages = {{323--329}}, publisher = {{ScienceDirect}}, title = {{{Model-Based Control of Hybridoma Cell Cultures}}}, doi = {{https://doi.org/10.1016/S1474-6670(17)34240-4}}, volume = {{34}}, year = {{2001}}, } @article{6776, author = {{Leifeld, Dirk and Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula}}, number = {{3/4}}, pages = {{222--231}}, publisher = {{Gesellschaft Deutschsprachiger Odonatologen}}, title = {{{Erstfund von Gomphus flavipes an der Oberweser}}}, volume = {{19}}, year = {{2000}}, } @misc{3773, author = {{Dohmann, Joachim and Mian, Iqbal Muhammad}}, title = {{{Reaktor zur Vergärung biogener Stoffe}}}, year = {{2000}}, } @phdthesis{64, abstract = {{Dieses Dissertation beschäftigt sich mit der Untersuchung von Clustern, mittels extrem kurzer Laserpulse. "Extrem kurz" bedeutet in diesem Zusammenhang 140 bis 1600 Femtosekunden. In dieser Zeit kann sich das Licht nur etwa einen zehntel bis einen halben Millimeter ausdehnen. Die Fokussierung dieser Strahlung erzeugt elektrische Felder, die denen im Innern eines Atoms entsprechen. Bei der Wechselwirkung von Clustern mit solchen L.aserpulsen sind interessante Effekte zu beobachten: Es entstehen in Bereichen niedriger Laserintensität mehrfach geladene Pt- und Pb-Cluster. Deren kleinste auftretende Größe kann mit den Voraussagen des Tröpfchenmodells verglichen werden. Direkt in dem Fokus der Laserstrahlung, dort wo die Materie den obigen extremen Feldern ausgesetzt wird, ist die Stärke der Anregung so groß, daß die Cluster vollständig in hochgeladene Atome zerfallen. Es zelgt sich eine interessante Abhängigkeit der erreichbaren Aufladung der Atome (L.adungszustand) von der Länge des Laserpulses. Ein einfaches Modell aus Epansion und optischer Respons des Clusters kann diesen Effekt qualitativ erklären. Vergleichsmessungen an Kohlenstoff zeigen nicht dieses Verhalten. Zwingend notwendig scheint die Möglichkeit der kollektiven Anregung der Valenzelektronen von Metallclustern zu sein.}}, author = {{Köller, Lars}}, isbn = {{3-932136-63-2}}, keywords = {{Femtosekunden Laserpulse, Metall Cluster, Wechselwirkung, kollektive Anregung, Plasmonen, Resonanz, hochgeladene Atome}}, pages = {{130}}, publisher = {{Verlag Hans Jacobs}}, title = {{{Wechselwirkung von Metall-Clustern mit intensiven fs-Laserpulsen}}}, year = {{2000}}, } @article{739, abstract = {{Carbon and metal clusters are excited by strong femtosecond laser pulses with up to 1016 W/cm2, yielding ionized clusters and highly charged atomic ions. For small carbon clusters and fullerenes the abundance of charged species correlates with the laser power, while for metal clusters the ionization efficiency is additionally strongly affected by the chosen laser pulse width which may result in an enhanced up–charging of the metal particle. In the case of platinum atomic charge states up to z=20 are detected at a pulse duration of about 600 fs. This observation is in accordance with a model based on a multi–plasmon excitation process. }}, author = {{Schumacher, M. and Teuber, S. and Köller, Lars and Köhn, J. and Tiggesbäumker, T. and Meiwes-Broer, Karl-Heinz}}, issn = {{1434-6060}}, journal = {{The European physical journal : D, Atomic, molecular, optical and plasma physics}}, number = {{1}}, pages = {{411--414}}, publisher = {{Springer}}, title = {{{Clusters in Strong Laser Fields: Comparison Between Carbon, Platinum, and Lead Clusters}}}, doi = {{https://doi.org/10.1007/s100530050468}}, volume = {{9}}, year = {{1999}}, } @misc{3734, author = {{Dohmann, Joachim and Keldenich, Kai and Mian , Iqbal Muhammad}}, title = {{{Aerosolminderung}}}, year = {{1999}}, } @article{734, abstract = {{We report on investigations of platinum clusters with about five to 400 atoms that are deposited from a cluster beam on to crystalline graphite surfaces. Scanning tunneling spectroscopy in an UHV environment at liquid helium temperatures reveals the existence of distinct peaks in the conductivity of the cluster-on-surface system. For negative voltages, the peak separations scale with the inverse particle height, which hints at a quantum size effect in these metallic “quantum dots”.}}, author = {{Bettac, A. and Köller, Lars and Rank, V. and Meiwes-Broer, Karl-Heinz}}, issn = {{0039-6028}}, journal = {{Surface Science : a journal devoted to the physics and chemistry of interfaces}}, keywords = {{Clusters, Conductivity, Platinum, Quantum size effect, Scanning tunneling, spectroscopy}}, pages = {{475--479}}, publisher = {{Elsevier}}, title = {{{Scanning Tunneling Spectroscopy on Deposited Platnium Clusters}}}, doi = {{10.1016/S0039-6028(98)00028-4}}, volume = {{402-404}}, year = {{1998}}, } @article{740, abstract = {{A pinhole grid spectrometer is used to measure the light emission from the plasma of the pulsed arc cluster ion source (PACIS). Spectra of various metals and carbon have been measured between 20 and 100 nm. In the case of carbon the average electron temperature is estimated to about 0.69 eV. Higher temperatures up to 0.79 eV are measured when inserting seeding gas which flushes the discharge volume with approx. one atmosphere of helium. An operation under this source conditions leads to the generation of an intense charged cluster beam. The application of the source as a bright light source in the VUV region is discussed.}}, author = {{Seeger, K. and Köller, Lars and Tiggesbäumker, J. and Meiwes-Broer, Karl-Heinz}}, issn = {{1434-6060 }}, journal = {{The European physical journal : D, Atomic, molecular, optical and plasma physics }}, number = {{2}}, pages = {{179--182}}, publisher = {{Springer}}, title = {{{VUV-Spectroscopy of the Plasma Light Emission Generated by the Pulsed Arc Cluster Ion Source (PACIS)}}}, doi = {{10.1007/s100530050162}}, volume = {{3}}, year = {{1998}}, } @inproceedings{4085, abstract = {{This paper deals with an advanced speed control scheme for inverter-fed travelling waveultrasonic motors. It is implemented as an additional outer control loop of an underlaid voltage andtravelling bending wave vector controller and verified by measurements on a prototype drive. Thenovel speed control is using an inverse contact model by a neural network, trained by measured valuesof speed and torque, in order to compensate the nonlinear torque generation of the motor. Since thereference values of the bending wave control are calculated from the desired torque value by the neu-ral network, first an open loop control of the drive ́s torque is feasible and second common speed con-trol schemes, well performing in common electrical drives, can be applied. Thus, the so equippedultrasonic motor-drive meets requirements for applications in the field of servo-drives e.g. robotics. }}, author = {{Maas, Jürgen and Schulte, Thomas and Grotstollen, H.}}, location = {{Harrogate (UK)}}, pages = {{701 -- 708}}, title = {{{Controlled Ultrasonic Motor for Servo-Drive Applications}}}, year = {{1998}}, } @misc{3733, author = {{Dohmann, Joachim and Keldenich, Kai}}, pages = {{3}}, title = {{{Absorber}}}, year = {{1998}}, } @article{4351, author = {{Kutz, Gerd}}, issn = {{0031-7136}}, journal = {{Pharmazeutische Zeitung : PZ ; die Zeitschrift der deutschen Apotheker ; Zentralorgan für die Apotheker der Bundesrepublik Deutschland}}, number = {{45}}, pages = {{11--15}}, publisher = {{Avoxa, Mediengruppe Deutscher Apotheker }}, title = {{{Galenische Charaktersisierung ausgewählte Hautpflegeprodukte }}}, volume = {{142}}, year = {{1997}}, } @article{743, abstract = {{We report measurements of the photodestruction cross sections of small sputtered negatively charged silver clusters (AgN−, 5 ≤ N ≤ 19). Resonance-like peaks are observed in the optical spectra which can be attributed to collective electron excitations. In contrast to neutral and positively charged clusters, the resonance energies are far above the electron emission threshold. With decreasing cluster size the resonance positions distinctly shift towards lower energies. This red-shift is explained by an extension of a semi-empirical model by Liebsch which we previously used to interpret the blue-shift in AgN+ [J. Tiggesbäumker, L. Köller, K.H. Meiwes-Broer and A. Liebsch, Phys. Rev. A 48 (1993) R1749], now including the polarizabilities of small metal clusters.}}, author = {{Tiggesbäumker, Josef and Köller, Lars and Meiwes-Broer, Karl-Heinz}}, issn = {{0009-2614 }}, journal = {{Chemical Physics Letters}}, number = {{3-4}}, pages = {{428--432}}, publisher = {{Elsevier}}, title = {{{Bound-Free Collective Electron Excitations in Negatively Charged Silver Clusters}}}, doi = {{https://doi.org/10.1016/0009-2614(96)00950-5}}, volume = {{260}}, year = {{1996}}, } @article{6787, author = {{Gerken, Bernd and Wienhöfer, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula}}, number = {{3/4}}, pages = {{249--267}}, publisher = {{Gesellschaft Deutschsprachiger Odonatologen}}, title = {{{Biozönologische Betrachtungen an Libellen einer französischen Flußaue im Rahmen eines tierökologischen Geländepraktikums}}}, volume = {{12}}, year = {{1993}}, } @article{742, abstract = {{The collinear ion-beam depletion technique is used to measure absolute photofragmentation cross sections of small silver-cluster ions in the range from 2.3 to 5.7 eV. Giant resonances are found which can be interpreted in terms of a collective electron oscillation. The optical spectra of spherical Ag+9 and Ag+21 show a large blue-shift of the resonance energy relative to the respective experimental surface value. For non-spherical clusters, a splitting of the giant resonance is found, in qualitative accordance with jellium calculations.}}, author = {{Tiggesbäumker, J. and Köller, Lars and O. Lutz, H. and Meiwes-Broer, Karl-Heinz}}, issn = {{0009-2614 }}, journal = {{Chemical Physics Letters}}, number = {{1-2}}, pages = {{42--47}}, publisher = {{Elsevier}}, title = {{{Giant Resonances in Silver-Cluster Photofragmentation}}}, doi = {{https://doi.org/10.1016/0009-2614(92)86099-4}}, volume = {{190}}, year = {{1992}}, } @inbook{745, abstract = {{Positive and negative silver cluster ions are produced by sputtering of solid silver by 25 keV Xe+ bombaxdment. After mass selection, collinear ion beam depletion is used to measure absolute photofragmentation cross-sections in the photon energy range from ħω = 2.0 to 5.7 eV. Giant resonances are found which can be interpreted in terms of a collective electron oscillation. For spherical clusters (e.g., Ag19−, Ag21+) single resonances dominate the spectra, whereas deformation (e.g., Ag9−, Ag11+) induces a splitting into two components.}}, author = {{Tiggesbäumker, J. and Köller, Lars and O. Lutz, H. and Meiwes-Broer, Karl-Heinz}}, booktitle = {{Nuclear Concepts in Atomic Cluster Physics}}, editor = {{Schmidt, Rüdiger}}, isbn = {{978-3-540-55625-1}}, location = {{Bad Honnef}}, pages = {{245--253}}, publisher = {{Springer}}, title = {{{Collective Excitation in Silver Cluster Anions and Kations}}}, doi = {{https://doi.org/10.1007/3-540-55625-7_27}}, volume = {{404}}, year = {{1992}}, }