TY  - JOUR
A1  - Orgzall, Ingo
A1  - Lorenz, Bernd
T1  - Kinetics of photoinduced phase transitions in sulfur below 10 Gpa
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Orgzall, Ingo
A1  - Lorenz, H.
A1  - Hinze, E.
T1  - Observation of cBN formation in the system Mg3N2-BN
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Orgzall, Ingo
A1  - Lorenz, Bernd
T1  - Structure and fractal properties in geological crystallization processes due to nucleation and growth
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
A1  - Janietz, Silvia
T1  - Electrochemical studies on thin films of poly(arylene 1,3,4-oxadiazole)s
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
T1  - Eine neue Synthesevariante für aromatische Poly(1,3,4-oxadiazole)
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
T1  - Neue thermostabile Polyheterocyclen
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
T1  - New aspects of the solid-state structures and electrochemical properties of aromatic Poly(1,3,4- Oxadiazole)s
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
T1  - Struktur und Eigenschaften dünner Schichten aus aromatischen Poly(1,3,4- oxadiazol)en
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Seeboth, A.
A1  - Wüstneck, Rainer
A1  - Krägel, Jürgen
T1  - Gel dispersed liquid crystals
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Wüstneck, Rainer
A1  - Enders, P.
A1  - Fiedler, H.
T1  - Determination of aggregation numbers and ionisation degree of micelles using surface tension isotherms of maleic acid mono[(4-alkyl-piperazine-2-yl)ethyl esters]
Y1  - 1994
ER  - 
TY  - THES
A1  - Auraß, Henry
T1  - Radiobeobachtungen der Sonnenkorona - ein Zugang zur Flarephysik : einige experimentelle Beiträge zum Verständnis der Dynamik des Flarerozesses
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Baier, Frank W.
T1  - Dominant galaxies in bimodal cluster
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Baier, Frank W.
A1  - Wipper, H.
T1  - Luminosity distribution in cD clusters
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Hubrig, Swetlana
A1  - Mathys, Gautier
T1  - The evolutionary state of magnetic Ap stars
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Liperovsky, Viktor A.
A1  - Meister, Claudia-Veronika
T1  - Ionosphärische sporadische E-Schichten mittlerer Breiten als Stromgenerator
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Meister, Claudia-Veronika
T1  - Langevin equation for turbulent plasmas near regions of magnetic reconnection
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Meister, Claudia-Veronika
T1  - Stochastic forces in plasmas with magnetized particles
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Meister, Claudia-Veronika
T1  - Stromfluktuationen in kosmischen Plasmen mit Dichtegradienten
Y1  - 1994
ER  - 
TY  - THES
A1  - Schwarz, Udo
T1  - Zeitreihenanalyse astrophysikalischer Aktivitätsphänomene
Y1  - 1994
ER  - 
TY  - THES
A1  - Atmanspacher, Harald
T1  - Informationsdynamik : Grundlagen, Interpretation, Konsequenzen
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Eichler, Hans Joachim
A1  - Haase, Alfred
A1  - Menzel, Ralf
T1  - SBS-Phase Conjugation for Thermal Lens Compensation in 100 Watt Average Power Solid-State Lasers
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Angelova, Angelina
A1  - Reiche, Jürgen
A1  - Ionov, Radoslav
A1  - Janietz, Dietmar
A1  - Lemmetyinen, Helge
A1  - Brehmer, Ludwig
T1  - Control of the structure of Langmuir-Blodgett films of a discotic liquid crystalline compound via the subphase composition and the adjacent molecular environment
N2  - Changes of the molecular arrangenemt that can be induced by means of the LB technique in the multilayers of a disc-shaped multialkynyl amphiphile are monitored by means of small angle X-ray diffraction. Studies of the monolayers at the air-water interface reveal "edge-on" orientation of the discs. Specific effects of the counter- ions (Na+, Cd²+, Pb²+, and Ba²+) and sub-solution pH on the monolayer collapse pressure, transfer efficiency and molecular order in the multilayers are found. A correlation between the monolayer properties and the ability for formation of periodic discotic structures in the presence of divalent counterions is established. The discotic molecules retain their "edge-on" arrangement in the highly compressed transferred films with slight irregular interdigtation of the flexible wings and inclination to the substrate normal. The tilt and the inter- digitation are reduced when the discotic monolayers are deposited in alternating LB films with barium arachidate spacer layers.
Y1  - 1994
ER  - 
TY  - THES
A1  - Spahn, Frank
T1  - Einfluß von Satelliten auf die Dynamik planetarer Ringe
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Mikelskis, Helmut
T1  - Inszenierung von Gelegenheiten des Naturverstehens : Konzeptionelle Betrachtungen zu einer empirischen Studie über ganzheitliches Lernen im Physikunterricht
Y1  - 1994
ER  - 
TY  - BOOK
A1  - Duit, Reinders
A1  - Mikelskis, Helmut
T1  - Physik, um die Welt zu begreifen : ein Lehrbuch für die Jahrgangsstufe 7/8 ; [Hauptbd.], Niedersachsen
Y1  - 1994
SN  - 3-425-03676-9
PB  - Diesterweg; Konkordia-Verl.
CY  - Frankfurt am Main; Bühl
ER  - 
TY  - INPR
A1  - Pikovskij, Arkadij
A1  - Feudel, Ulrike
T1  - Characterizing strange nonchaotic attractors
N2  - Strange nonchaotic attractors typically appear in quasiperiodically driven nonlinear systems. Two methods of their characterization are proposed. The first one is based on the bifurcation analysis of the systems, resulting from periodic approximations of the quasiperiodic forcing. Secondly, we propose th characterize their strangeness by calculating a phase sensitivity exponent, that measures the sensitivity with respect to changes of the phase of the external force. It is shown, that phase sensitivity appears if there is a non-zero probability for positive local Lyapunov exponents to occur.
T3  - NLD Preprints - 2 
Y1  - 1994
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13405
ER  - 
TY  - THES
A1  - Pikovskij, Arkadij
T1  - Dynamics of perturbations in chaotic dynamical systems
Y1  - 1994
ER  - 
TY  - INPR
A1  - Kurths, Jürgen
A1  - Pikovskij, Arkadij
A1  - Scheffczyk, Christian
T1  - Roughening interfaces in deterministic dynamics
N2  - Two deterministic processes leading to roughening interfaces are considered. It is shown that the dynamics of linear perturbations of turbulent regimes in coupled map lattices is governed by a discrete version of the Kardar-Parisi-Zhang equation. The asymptotic scaling behavior of the perturbation field is investigated in the case of large lattices. Secondly, the dynamics of an order-disorder interface is modelled with a simple two-dimensional coupled map lattice, possesing a turbulent and a laminar state. It is demonstrated, that in some range of parameters the spreading of the turbulent state is accompanied by kinetic roughening of the interface.
T3  - NLD Preprints - 3 
Y1  - 1994
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13447
ER  - 
TY  - JOUR
A1  - Mikelskis, Helmut
T1  - Schneller als der Wind : zur Behandlung des Darrieus-Windrotors im Physikunterricht
Y1  - 1993
ER  - 
TY  - JOUR
A1  - Mikelskis, Helmut
T1  - Zukunftsperspektiven physikdidaktischer Forschung im vereinigten Deutschland
Y1  - 1993
SN  - 3-88064-223-0
ER  - 
TY  - BOOK
A1  - Duit, Reinders
A1  - Mikelskis, Helmut
T1  - Physik, um die Welt zu begreifen : ein Lehrbuch für die Jahrgangsstufe 5/6 ; [Hauptbd.], Nordrhein- Westfalen
Y1  - 1993
SN  - 3-425-03671-8
PB  - Diesterweg
CY  - Frankfurt am Main
ER  - 
TY  - BOOK
A1  - Duit, Reinders
A1  - Mikelskis, Helmut
T1  - Physik - Chemie, um die Welt zu begreifen : ein Lehrbuch für die Orientierungsstufe ; [Hauptbd.], Niedersachsen
Y1  - 1993
SN  - 3-425-03675-0
VL  - 3675
PB  - Diesterweg
CY  - Frankfurt am Main
ER  - 
TY  - JOUR
A1  - Mikelskis, Helmut
T1  - Zur Ökologisierung des Lernprozesses : Versuch über einen vernachlässigten Aspekt von Umweltbildung
Y1  - 1993
SN  - 3-89088-073-8
ER  - 
TY  - BOOK
A1  - Marquardt-Mau, Brunhilde
A1  - Mayer, Jürgen
A1  - Mikelskis, Helmut
T1  - Umwelt : Lexikon ökologisches Grundwissen
Y1  - 1993
SN  - 3-499-16337-3
VL  - 6337
PB  - Rowohlt
CY  - Reinbek bei Hamburg
ER  - 
TY  - BOOK
A1  - Hänsel, Horst
A1  - Neumann, Werner
A1  - Hudel, Erich
T1  - Physik : Bd. 2 Elektrizität, Optik, Raum und Zeit
Y1  - 1993
SN  - 3-86025-304-2
VL  - 2
PB  - Spektrum Akad. Verl.
CY  - Heidelberg
ER  - 
TY  - THES
A1  - Pedzisz, Bozena
T1  - Zur Rolle historischer Betrachtungen im Physikunterricht unter besonderer Berücksichtigung grundlegender Experimente
Y1  - 1993
ER  - 
TY  - BOOK
A1  - Hänsel, Horst
A1  - Neumann, Werner
A1  - Wedell, Reiner
T1  - Physik : Bd. 1 Mechanik und Wärmelehre
Y1  - 1993
SN  - 3-86025-046-9
VL  - 1
PB  - Spektrum Akad. Verl.
CY  - Heidelberg
ER  - 
TY  - JOUR
A1  - Hubrig, Swetlana
A1  - Mathys, Gautier
T1  - Mass loss, magnetic field and chemical inhomogenities in the he-weak star HD 21699
Y1  - 1993
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Dietel, Reinhard
A1  - Lemmetyinen, Helge
A1  - Janietz, Dietmar
A1  - Lemmetyinen, Helge
A1  - Brehmer, Ludwig
T1  - Edge-on Langmuir-Blodgett multilayers derived from disc-shaped multiyne mesogens
N2  - Langmuir-Blodgett(LB) multilayers were prepared from disc-shaped multiyne mesogens based on amphiphilic alkyl pentakis(aryl-ethynyl)benzene ethers. The two compounds used are characterized by five hydrophobic flexible chains and one hydrophilic substituent at the terminal position of the alkoxy chain. The LB films were analysed by X-ray scattering and spectroscopic measurements. An edge-on arrangement of the two discotic pentaalkynes within Y-type bilayers with a different packing density proved to be possible for the LB films of both compounds.
Y1  - 1992
ER  - 
TY  - THES
A1  - Sprengel, Jens-Uwe
T1  - Analyse der Transfermatrizen geschichteter anisotroper Medien
Y1  - 1992
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Pietsch, Ullrich
A1  - Fink, Hans-Peter
A1  - Lemmetyinen, Helge
T1  - A comparison fo x-ray methods for structure refinement of Langmuir-Blodgett multilayers
N2  - The possibilities and limits of structure refinement of Langmuir-Blodgett films by means of symmetrical reflection of X- rays are described using the example of a stearic acid multilayer. Three different techniques for the determiantion of the electron density profile from reflectivity data are compared; a Fourier method, a Patterson method, and model calculations. The important role of the a priori information for finding the besft structure model is outlined.
Y1  - 1992
ER  - 
TY  - JOUR
A1  - Mikelskis, Helmut
T1  - Combining issues of "girl-suited" science teaching, STS and constructivism in a physics textbook
Y1  - 1992
SN  - 0157-244X
ER  - 
TY  - JOUR
A1  - Mikelskis, Helmut
T1  - Physiklernen heißt: Brücken schlagen zwischen toten Zahlen und sinnlichem Dasein
Y1  - 1992
SN  - 3-89088-061-4
ER  - 
TY  - JOUR
A1  - Mikelskis, Helmut
T1  - Wo bleibt das Phänomen im Experiment?
Y1  - 1992
SN  - 3-88064-212-5
ER  - 
TY  - THES
A1  - Wedel, Armin
T1  - Untersuchungen zum Dipolschaltverhalten an Polymerfestkörpern
Y1  - 1992
ER  - 
TY  - THES
A1  - Gerhard, Reimund
T1  - Präparation und Untersuchung von Festkörperschichten für Sensorik und Photonik : eine Zusammenstellung von Veröffentlichungen
Y1  - 1992
ER  - 
TY  - JOUR
A1  - Neumann, Werner
A1  - Kasper, Sabine
A1  - Kasper, Roberto
T1  - Discharge Currents in Polymer Solids between Blocking Contacts
Y1  - 1991
SN  - 0-7803-0113- 7
ER  - 
TY  - JOUR
A1  - Neumann, Werner
T1  - Stromträgerrelaxationen in hochohmigen Polymerfestkörpern
Y1  - 1991
ER  - 
TY  - THES
A1  - Regenstein, Wolfgang
T1  - Fluoreszenzlöschung durch Elektronen- und Resonanzenergietransfer in Lösungen
T1  - Fluorescence quenching through electron and resonant energy transfer in solutions
N2  - Intermolekulare Desaktivierung zwischen einem angeregten Fluorophor und einem Löscher durch Elektronenübertragung kann mit dynamischer und statischer Löschung beschrieben werden. Es wird vorgeschlagen den dynamischen Löschprozess in Transport- und Wechselwirkungsphase einzuteilen. Ergebnisse der Löschung der N-Heteroarene durch Naphthalen bei hohen Löscherkonzentrationen werden mit der statischen Löschung beschrieben. Außerdem werden CT-Systeme untersucht. Nach einem Überblick über statische Modelle zum Resonanzenergietransfer wird ein aus der Treffertheorie abgeleitetes Modell vorgestellt und an Beispielen getestet. Die Experimente sind computergesteuert.
N2  - The intermolecular deactivation through dynamic and static quenching can described with electron transition between an excited fluorophor and quencher. It is proposed to devide the dynamic quenching process in a transport and an interaction phase. Results oft the quenching of N-heteroarenes through naphthalenes by high concentrations are described with static quenching. CT-systems are also investigated. After giving an overview of statistical models of resonant energy transfer there is presented a model derived from the hit theory. The models were tested by examples. The experiments were executed computer-controlled.
KW  - Intermolekulare Desaktivierung
KW  - dynamische und statische Löschung
KW  - Transport- und Wechselwirkungsphase
KW  - Resonanzenergietransfer
KW  - statistische Modelle
KW  - Intermolecular deactivation
KW  - dynamic and static quenching
KW  - transport and interaction phase
KW  - resonant energy transfer
KW  - statistical models
Y1  - 1989
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-491377
N1  - Überarbeitete Fassung der Habilitationsschrift aus dem Jahr 1989
ER  - 
TY  - THES
A1  - Regenstein, Wolfgang
T1  - Absorptionsspektroskopische Untersuchungen zum Einfluß des Mediums und des Aggregatzustandes auf die Gestalt und Lage der Charge-Transfer-Bande
N2  - An einigen CT-Modellkomplexen in verschiedenen Lösungsmitteln und bei Temperaturen von 113-300 K sollte der Einfluß der Umgebung auf die Form und Lage der Absorption von CT-Komplexen unterschiedlicher Bindungsfestigkeit untersucht werden.
Dazu wurden bekannte Bandenprofilfunktionen auf ihre Anwendbar-keit geprüft. Da eine optimale Anpassung nicht möglich war, wurde eine neue Profilfunktion entwickelt, die eine bessere Beschreibung ergab.
Nach der Bestimmung der Gleichgewichtskonstante und des Extink-tionskoeffizienten konnte mit der Profilfläche das Übergangsmoment berechnet werden.
Die Lösungsmittelabhängigkeit wurde bei verschiedenen Brechzahlen und Dielektrizitätskonstanten untersucht.
Für feste Komplexe wurde eine spezielle Präparationstechnik gewählt. Die beobachteten Feinstrukturen und der auftretende Streuuntergrund werden diskutiert.
N2  - At some CT model complexes in various solvents and temperatures between 113- 300 K should investigate the influence of envirenment on the shape and position of CT complexes at various binding forces. 
Thereto known band profile functions were checked for their applicability. Because it was impossible to get an optimal accomodation a new profile function was developed, that results in a better description.
After determination of equilibrium constant and extinction coefficient it was possible to calculate the transition moment with profiled area.
The solvent dependence was investigated with various refractive indexes and dielectric constants.
For solid complexes were selected a special preparation technique. The observed fine structures and the appered scattering underground were discussed.
T2  - Absorption spectroscopic investigations on the influence of medium and aggregate state on the shape and position of CT bands
KW  - CT Komplex
KW  - Bandenprofil
KW  - Übergangsmoment
KW  - Lösungsmittelabhängigkeit
KW  - Präparation fester Komplexe
KW  - CT complex
KW  - band profile
KW  - transition moment
KW  - solvent dependence
KW  - solid complex preparation
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-496702
ER  - 
TY  - THES
A1  - Karimi, Marzieh
T1  - Mechanical properties of vesicle membranes in asymmetric buffer conditions
Y1  - 
ER  - 
TY  - JOUR
A1  - Fan, Xin
A1  - Stegmann, Mikkel B.
A1  - Schrappe, Oliver
A1  - Zeidler, Steffen
A1  - Jensen, Isac G.
A1  - Thorsen, Jannich
A1  - Bjerregaard, Tobias
A1  - Krstić, Miloš
T1  - Frequency-domain optimization of digital switching noise based on clock scheduling
JF  - IEEE Transactions on Circuits and Systems I
N2  - The simultaneous switching activity in digital circuits challenges the design of mixed-signal SoCs. Rather than focusing on time-domain noise voltage minimization, this work optimizes switching noise in the frequency domain. A two-tier solution based on the on-chip clock scheduling is proposed. First, to cope with the switching noise at the fundamental clock frequency, which usually dominates in terms of noise power, a two-phase clocking scheme is employed for system timing. Second, on-chip clock latencies are manipulated to target harmonic peaks in specific frequency bands for the spectral noise optimization. An automated design flow, which allows for noise optimization in user-defined application-specific frequency bands, is developed. The effectiveness of our design solution is validated by measurements of substrate noise and conductive EMI (electromagnetic interference) noise on a test chip, which consists of four wireless sensor node baseband processors each addressing a distinct clock-tree-synthesis strategy. Compared to the reference synchronous design, the proposed clock scheduling solution substantially reduces noise in the target GSM-850 band, i.e., by 11.1 dB on the substrate noise and 12.9 dB on the EMI noise, along with dramatic noise peak drops measured at the 50-MHz clock frequency.
Y1  - 2016
U6  - https://doi.org/10.1109/TCSI.2016.2546118
SN  - 1549-8328
VL  - 63
IS  - 7
SP  - 982
EP  - 993
ER  -