M. Barth

Publication List Details

Period

1984 - 2009

Number

116

Co-Authors

Experimental characterization of guided waves by their surface displacement vector field (2009)

Barth, M., Kohler, B., Schubert, L.

The development new nondestructive evaluation (NDE) and structural health monitoring (SHM) methods utilizing guided elastic waves needs a good understanding of wave propagation properties and the...

Where x-ray imaging fails - delamination, crack, and micro-pore detection using ultrasonic reflection tomography in a scanning acoustic microscope (2009)

Barth, M., Schubert, F., Koehler, B.

In recent years x-ray imaging techniques have dramatically expanded their range of applications. However, there are still specific problems where x-ray techniques fail due to fundamental physical...

Novel piezoelectric fiber transducers for mode selective excitation and detection of lamb waves (2009)

Koehler, B., Frankenstein, B., Schubert, F., Barth, M.

One of the most widely applied methods for Structural Health Monitoring of plate like structures, shells and tubes is based on the transmission and reception of guided elastic waves. But, dispersion...

Merged Ensemble Clustering in fMRI Analysis (2008)

E. Dimitriadou, M. Barth, K. Hornik, E. Moser

Exploratory data analysis (EDA) methods may be used to identify important aspects within fMRI data sets such as artifacts and unexpected functional activation, because they do not require exact...

Improved performance in fuzzy clustering of functional MRI datasets by effective processing strategies (2008)

R. Vivanco, E. Dimitriadou, M. Barth, M. Jarmasz, K. Hornik, E. Moser

Exploratory data analysis (EDA) of functional MRI datasets is becoming more common as it allows researchers to identify activation areas without having to specify all the experimental parameters,...

Guided elastic waves and their impact interaction in CFRP structures characterized by 3D laser scanning vibrometry (2008)

Schubert, L., Barth, M., Klesse, T., Köhler, B., Frankenstein, B.

The paper presents guided elastic waves and their identification and damage interaction in a CFRP plate. After the excitation of a fiber transducer, different elastic waves emerge in a plate. By...

Compensation Of Time Delays In Telepresence Applications By Photo-Realistic Scene Prediction Of Partially Unknown Environments (2007)

C. Eberst, N.O. Stöffler, M. Barth, G. Färber

A time delay in the visual feedback given to an operator, who is controlling a remote manipulator, noticeably impairs his performance. The use of predictive displays is an approach that has proven...

Transverse Energy and Forward Jet Production in the Low $x$ Regime at HERA (2006)

Aid, S., Andreev, V., Andrieu, B., Arpagaus, M., Babaev, A., ...

The production of transverse energy in deep inelastic scattering is measured as a function of the kinematic variables $x$ and $Q^2$ using the H1 detector at the ep collider HERA. The results are...

A measurement and QCD analysis of the proton structure function F$_{2}$(x,Q$^{2}$) at HERA (2006)

Aid, S., Andreev, V., Andrieu, B., Appuhn, R.D., Arpagaus, M., Babaev, A., ...

A new measurement of the proton structure function F_2(x,Q^2) is reported for momentum transfers squared Q^2 between 1.5~GeV^2 and 5000~GeV^2 and for Bjorken x between 3\cdot 10^{-5} and 0.32 using...

A measurement and QCD analysis of the proton structure function F$_{2}$(x,Q$^{2}$) at HERA (2006)

Aid, S., Andreev, V., Andrieu, B., Appuhn, R.D., Arpagaus, M., Babaev, A., ...

A new measurement of the proton structure function F_2(x,Q^2) is reported for momentum transfers squared Q^2 between 1.5~GeV^2 and 5000~GeV^2 and for Bjorken x between 3\cdot 10^{-5} and 0.32 using...

A measurement and QCD analysis of the proton structure function F$_{2}$(x,Q$^{2}$) at HERA (2006)

Aid, S., Andreev, V., Andrieu, B., Appuhn, R.D., Arpagaus, M., Babaev, A., ...

A new measurement of the proton structure function F_2(x,Q^2) is reported for momentum transfers squared Q^2 between 1.5~GeV^2 and 5000~GeV^2 and for Bjorken x between 3\cdot 10^{-5} and 0.32 using...

Inclusive $d^0$ and $d^{\star\pm}$ production in neutral current deep inelastic EP scattering at HERA (2006)

Adloff, C., Aid, S., Anderson, M., Andreev, V., Andrieu, B., Appuhn, R.D., ...

First results on inclusive D0 and D* production in deep inelastic $ep$ scattering are reported using data collected by the H1 experiment at HERA in 1994. Differential cross sections are presented for...

Verfahren und Vorrichtung zur Herstellung von Leichtbeton und Zuschlagstoff fuer diesen (2004)

Geissler, A., Barth, M., Biedermann, U., Angerer, G., Marschmeider-Weidemann, F., Mueller, H., ...

DE 19857130 A UPAB: 20000811 NOVELTY - In the production of lightweight concrete containing granular plastics aggregate, the plastics consist (partly) of scrap, which is first rendered inert by...

Distribution of reflection coefficients in absorbing chaotic microwave cavities (2003)

Mendez-Sanchez, R. A., Kuhl, U., Barth, M., Lewenkopf, C. H., Stoeckmann, H. J.

The distributions of the reflection coefficients $P(R)$ for chaotic microwave cavities with time-reversal symmetry are investigated in different absorption and antenna coupling regimes. In all...

Scanning Fourier Spectroscopy: A microwave analog study to image transmission paths in quantum dots (2003)

Barth, M., Kuhl, U., Bird, J. P.

We use a microwave cavity to investigate the influence of a movable absorbing center on the wave function of an open quantum dot. Our study shows that the absorber acts as a position-selective probe,...

Current and vorticity auto correlation functions in open microwave billiards (2003)

Barth, M., Kuhl, U.

Using the equivalence between the quantum-mechanical probability density in a quantum billiard and the Poynting vector in the corresponding microwave system, current distributions were studied in a...

Members of the Arabidopsis WRKY group III transcription factors are part of different plant defense signaling pathways (2003)

Kalde, M., Barth, M., Somssich, I. E., Lippok, B.

WRKY proteins are a large group of transcription factors restricted to the plant kingdom. In Arabidopsis thaliana, the gene family consists of 74 members. Here, we analyzed the expression of all 13...

Transition from Gaussian-orthogonal to Gaussian-unitary ensemble in a microwave billiard with threefold symmetry (2002)

Schaefer, R., Barth, M., Leyvraz, F., Mueller, M., Seligman, T. H.

Recently it has been shown that time-reversal invariant systems with discrete symmetries may display in certain irreducible subspaces spectral statistics corresponding to the Gaussian unitary...

Pre-embedding immunogold labeling of TUNEL stain enables evaluation of DNA strand breaks and ultrastructural alterations in individual cells of neuronal tissue (2002)

Barth, M., Oulmi, Y., Ehrenreich, Hannelore, Schilling, L.

In the brain apoptosis may occur as a physiological phenomenon during periods of programmed cell death as well as under pathological conditions such as ischemia, trauma, tumor, and degenerative...

Verfahren und Vorrichtung zur Messung der Stroemungscharakteristik und anderer Prozessparameter (2002)

Barth, M., Schmidt, F., Rupp, J., Obergriesser, F., Steck, J.

NOVELTY - The method involves transmitting two successive short ultrasound signals at least partly in the flow direction. Echo signals from parts of each ultrasound signal, which are scattered by...

Observation of resonance trapping in an open microwave cavity (2000)

Persson, E., Rotter, I., Barth, M.

The coupling of a quantum mechanical system to open decay channels has been theoretically studied in numerous works, mainly in the context of nuclear physics but also in atomic, molecular and...

A measurement of the proton structure function $f_2(x. q^2)$ (2000)

Ahmed, T., Aid, S., Akhundov, A A., Andreev, V., Andrieu, B., Appuhn, R D., ...

A measurement of the proton structure function F_{\!2}(x,Q^2) is reported for momentum transfer squared Q^2 between 4.5 GeV^2 and 1600 GeV^2 and for Bjorken x between 1.8\cdot10^{-4} and 0.13 using...

Workshop WWW-basierte Fachinformationssysteme im Umweltbereich, Karlsruhe, 27.Juni 2000. Dokumentation. (2000)

Barth, M., Schmid, E., Jaeschke, A., Geiger, W., Weidemann, R., König, M., ...

Karlsruhe : Landesanstalt für Umweltschutz Baden-Württemberg und Forschungszentrum Karlsruhe GmbH, 2000

Global and local level dynamics in chaotic microwave billiards (1999)

Barth, M., Kuhl, U.

The spectra of Sinai microwave billiards and rectangular billiards with statistically distributed circular scatterers have been taken as a function of the position of one wall, and of one of the...

Global versus local billiard level dynamics: The limits of universality (1999)

Barth, M., Kuhl, U.

Level dynamics measurements have been performed in a Sinai microwave billiard as a function of a single length, as well as in rectangular billiards with randomly distributed disks as a function of...

Ultraschall-Durchflussmesser nach dem Laufzeitkorrelationsverfahren (1999)

Rupp, J., Schmidt, F., Barth, M.

DE 19815199 A UPAB: 19991124 NOVELTY - The flow meter has first and second sensors (6,8) alternately operated as a transmitter and receiver, whereby the preferred digitized receiver signals are...

Installations frigorifiques fonctionnant à l'ammoniac. Leur impact sur l'environnement. Guide d'étude des risques technologiques (1999)

Barth, M., Guilpart, J., Riout, J., Folempin, P., Vidon, F., Jarry, J.

This article is divided into two parts. The first one is about thermodynamic particularities of ammoniac that is used as a refrigerant fluid. It also bears on reglementations on the installations...

Distribution of the wave function inside chaotic partially open systems (1997)

Seba, P., Haake, F., Kus, M., Barth, M., Kuhl, U.

We demonstrate both theoretically and experimentally that the distribution of the wavefunction inside a partially open chaotic timereversal symmetric system displays significant deviations from the...

Estimation of missing cone data in three-dimensional electron microscopy (1988)

Barth, M., Bryan, R. K., Hegerl, R., Baumeister, W.

The range of tilt angles for which projected images of two-dimensionally periodic specimens can be obtained in electron microscopy is limited both by technical aspects such as goniometer design, and...

Three-dimensional structure of the regular surface layer (HPI layer) of Deinococcus radiodurans (1986)

Baumeister, W., Barth, M., Hegerl, R., Guckenberger, R., Hahn, M., Saxton, W. O.

The low-resolution structure of the regular surface layer of Deinococcus radiodurans has been determined from negatively stained specimens by three-dimensional electron microscopy. The layer has P6...

Three-dimensional reconstruction of a freeze-dried and metal-shadowed bacterial surface layer (1986)

Wildhaber, I., Hegerl, R., Barth, M., Gross, H., Baumeister, W.

Three-dimensional reconstructions were performed from tilt series of a rotary-shadowed regular surface layer. Two series, representing the two surfaces of the HPI layer, were processed. The metal...

Decoration and shadowing of freeze-etched catalase crystals (1985)

Bachmann, L., Becker, R., Leupold, G., Barth, M., Guckenberger, R., Baumeister, W.

Aqueous suspensions of catalase crystals were freeze-cleaved, deep-etched and either shadowed with Ta/W at 45 degrees or decorated with 0.1-0.9 nm thick deposits of Au and Pt at normal incidence. The...

Role for the histone-like protein H-NS in growth phase-dependent and osmotic regulation of sigma S and many sigma S-dependent genes in Escherichia coli.

Barth, M, Marschall, C, Muffler, A, Fischer, D, Hengge-Aronis, R

The sigma S subunit of RNA polymerase (encoded by the rpoS gene) is the master regulator in a complex regulatory network that controls stationary-phase induction and osmotic regulation of many genes...

Heat shock regulation of sigmaS turnover: a role for DnaK and relationship between stress responses mediated by sigmaS and sigma32 in Escherichia coli.

Muffler, A, Barth, M, Marschall, C, Hengge-Aronis, R

The cellular level of the rpoS-encoded sigmaS subunit of RNA polymerase increases in response to various stress situations that include starvation, high osmolarity, and shift to acid pH, and these...

Evaluation of preoperative high magnetic field motor functional MRI (3 Tesla) in glioma patients by navigated electrocortical stimulation and postoperative outcome

Roessler, K, Donat, M, Lanzenberger, R, Novak, K, Geissler, A, Gartus, A, ...

Objectives: The validity of 3 Tesla motor functional magnetic resonance imaging (fMRI) in patients with gliomas involving the primary motor cortex was investigated by intraoperative navigated motor...