Tegel, M., Johansson, S., Weiss, V., Schellenberg, I., Hermes, W., Poettgen, R., ...
The new quaternary iron arsenide-fluoride SrFeAsF with the tetragonal ZrCuSiAs-type structure was synthesized and the crystal structure was determined by X-ray powder diffraction (P4/nmm, a =...
V. Weiss, S. Seeger, K. Ellmer, R. Mientus
Journal article
Weiss,V., Sessler,J., Grewal,K., Chait,R.
The effects of non-uniform stress distributions on fracture strength were studied on four mate rials that exhibit brittle behavior; Wesgo AL995, Mykroy 750 and 1100 (ceramics) and Plexiglas (acrylic...
THE EFFECT OF TESTING SYSTEM CHARACTERISTICS ON FRACTURE BEHAVIOR. (2005)
In order to investigate the stiffness effects under very stiff conditions, a stiff tensile testing machine has been constructed. This machine is screw driven, has a solid-state strain gage load cell...
A STUDY OF THE EFFECT OF SUPERIMPOSED STRESS CONCENTRATIONS. (2005)
Weiss,V., Takimoto,A., Sessler,J.
The effect of tensile stress fields due to holes, superimposed on the stress fields due to external notches, was investigated by means of photoelastic techniques and tensile fracture tests. A...
CRACK INITIATION IN METALLIC MATERIALS, (2005)
Schroder,K., Packman,P., Nash,G., Weiss,V.
The effect of surface structure on the fracture strength has been studied on commercially pure tungsten 2.5A1-16V titanium alloy and LiF specimens. Brittle titanium alloy specimens with piggy back...
CRACK INITIATION IN METALLIC MATERIALS. (2005)
WEISS,V., Packman,P., Nash,G., Schroder,K.
Conditions for crack initiation as a function of test specimen geometry, test material, testing conditions and internal structure of the material were investigated. Lithium fluoride was used to give...
CRACK INITIATION IN CRYSTALLINE MATERIALS. (2005)
PACKMAN,P., Schroder,K., Weiss,V.
The influence of several macroscopic and microscopic parameters on the fracture of crystalline materials was studied on commercially pure tungsten, 2.5Al-16V titanium alloy and LiF single crystal...
CRACK INITIATION IN METALLIC MATERIALS. (2005)
Weiss,V., Nash,G., Schroder,K.
Crack initiation and propagation data for AISI 301 stainless, RS-120 (annealed), and PH-15-7Mo in the RH 1050 and the CH-900 conditions under alternating load is presented and analyzed using a new...
THE EFFECT OF TESTING SYSTEM STIFFNESS ON FRACTURE. (2005)
Weiss,V., Grewal,K. S., Sessler,J.
A preliminary study of the influence of testing system stiffness on the fracture of center-cracked sheet specimens of 7075-T6 aluminum indicated a noticeable effect of testing system stiffness on...
Weiss,V., Schroder,K., Sanford,W., Chandan,H., Kunio,T.
E(Mechanics), Crack propagation, Austenite, Martensite, High strength alloys, Temperature, Plasticity, Tensile properties, Strain(Mechanics), Stress strain relationsTRIP steelsThe deformation -...
CRACK INITIATION IN METALLIC MATERIALS. (2005)
Schroder,K., Packman,P., Weiss,V.
An attempt is made to show that all dislocation mechanism of crack formation proposed to date will lead to the formation of a microcrack which is approximately normal to the direction of the applied...
CRACK INITIATION IN METALLIC MATERIALS. (2005)
Weiss,V., Packman,P., Nash,G., Schroder,K.
The mechanisms of crack initiation in LiF single crystals have been studied in Phase I and a value for Neuber's finite particle size has been determined. A dislocation reaction has been proposed to...
Steingaß, S., Klein, B., Pavel, K., Ruf, U., Walter, K., Weiss, V.
The medical diagnosis of bedsores often applies to open wounds. These wounds are caused by constant pressure to the skin of seniors who cannot change their position in bed or wheelchair without help....
CRACK INITIATION IN METALLIC MATERIALS (2003)
Schroder, K., Packman, P., Weiss, V.
The theoretical analysis of hole and notch stress fields was continued. It is shown how the maximum stress of an elliptical crack is orientation dependent. To study the effects of surface condition...
CRACK INITIATION IN METALLIC MATERIALS (2003)
WEISS, V., SCHRODER, K., PACKMAN, P., SESSLER, J. G.
Conditions for crack initiation as a function of test specimen geometry, test material, testing conditions and internal structure of the material were investigated. Tungsten and titanium sheet...
Wandinger,U., Müller,D., Bockmann,C., Althausen,D., Matthias,Volker, Bösenberg,Jens, ...
[1] During the Lindenberg Aerosol Characterization Experiment (LACE 98) simultaneous measurements with ground-based and airborne lidars and with two aircraft equipped with aerosol in situ...
Design Against Fatigue Failure. (2002)
Fatigue crack growth data in the low and intermediate stress range obtained from tests on 2014-T6 aluminum, Ti-6Al-4V and 250 grade maraging steel, and similar data on 7075-T6 and 2024-T3 aluminum...
Wandinger, U., Müller, D., Bockmann, C., Althausen, D., Matthias, Volker, Bösenberg, Jens, ...
[1] During the Lindenberg Aerosol Characterization Experiment (LACE 98) simultaneous measurements with ground-based and airborne lidars and with two aircraft equipped with aerosol in situ...
Neue Wege der Qualitätssicherung - Modellprojekt Dekubituserfassung im Ostalbkreis (2002)
Steingaß, S., Klein, B., Hube, G., Pavel, K., Walter, K., Weiss, V.
Bedsores can usually be avoided by adequate care and preventive measures. In the context of the local agenda process a local district office (Landratsamt) and inspection units initiated a variety of...
Die Zukunft der Arbeit: Flexibilisierung ohne Ende? (2001)
Bauer, W., Klein, B., Hofmann, J., Weiss, V.
Mit einer aktuellen Studie hat das Stuttgarter Fraunhofer-Institut IAO die erste umfassende, repräsentative Expertenbefragung zum Thema \'84Zukunft der Arbeit" vorgelegt. Dabei fokussiert sich das...
Zukunft der Arbeit: Ergebnisse einer nationalen und internationalen Expertenbefragung (2001)
Bauer, W., Hofmann, J., Klein, B., Weiss, V.
»Wie wirken sich die zunehmende Globalisierung und die rasante Entwicklung im Bereich neuer Technologien auf die Zukunft der Arbeit aus?« ist eine zentrale Kernfrage, die sich Unternehmen zunehmend...
Dimerization of signalling modules of the EvgAS and BvgAS phosphorelay systems (2000)
Rippe, K., Bantscheff, M., Glocker, M., Lucassen, M., Jung, K., ...
Ist das "Selbstbewertungssystem für Einrichtungen der stationären Altenhilfe" ein adäquates Instrument zur Qualitätssicherung? Und inwieweit kann es zur Etablierung von Qualitätsprozessen...
Oelhaf, H., Goede, A.P.H., Kerridge, B., Küllmann, H., Renard, J.B., Stowasser, M., ...
5th European Workshop on Stratospheric Ozone, St.Jean de Luz, F, September 27 - October 2, 1999
AIR WEAPONS MATERIALS APPLICATION HANDBOOK. METALS AND ALLOYS (1998)
IN THE FIRST EDITION OF THE Air Weapons Materials Application Handbook, Metals and Alloys, an attempt was made to assemble pertinent and up-todate inf rmation on the properties of the alloys of...
A STUDY OF THE EFFECT OF SUPERIMPOSED STRESS CONCENTRATIONS. (1998)
Weiss, V., Takimoto, A., Sessler, J.
The interaction effects of the stress fields of edge notches and holes or elongated slots have been studied by photoelasticity techniques, in an effort to obtain the basic information required for a...
CRACK INITIATION IN METALLIC MATERIALS. (1998)
Weiss,V., Nash,G., Schroder,K.
Crack initiation and propagation under altering loading has been investigated for a number of technical alloys (AISI 301, PH-15-7Mo, D6-AC, HP9-4-25, Ti-6A1-4V). The parameters n(+) and N sub o...
DEFORMATION CHARACTERISTICS OF METALS AND ALLOYS. (1998)
Weiss,V., Kot,R., Oelschlagel,D.
The effects of deformation during a phase transformation were studied on the three plain carbon steels AISI 1018, 1045 and 1095, the bearing steel AISI 52100 and commercially pure titanium. Specimens...
Calculations on the Effect of the Stress State on the Fracture Ductility of Solids. (1998)
Weiss,V., Lin,H. H., Sengupta,M., Lal,D.
The report contains the results of calculations on the effect of multiaxial stress states on the fracture ductility of solids. It is assumed that the solids in question follow a stress-strain law of...
Weiss, V., Takimoto, A., Nash, G.
The stress field interactions between neighboring stress raisers (simulated flaws; a variety of edge notches, and holes) were investigated under uniaxial tensile load to obtain the basic information...
Rolling Contact Fatigue Studies of CPM Steels M-50, REX 45, and T-15. (1998)
Weiss, V., Ecker, L., Vedder, T., Middleton, R. M., Wells, M. G. H.
Rolling Contact fatigue tests have been conducted on 3 powder metallurgy (CPM) steels, M-50, T-15, and REX-45, and on ingot melted M-50 VIM/VAR at Hertzian contact stresses between 786 and 853 ksi...
Femtosecond dynamics of molecules and clusters (1994)
Baumert, Thomas, Thalweiser, Rainer, Weiss, V., Wiedenmann, Ernst, Gerber, Gustav
The real-time dynamics of multiphoton ionization and fragmentation of molecules - Na_2 , Na_3 - and clusters - Na_n, Hg_n - has been studied in molecular beam experiments employing ion and electron...
Femtosecond dynamics of molecules and clusters (1994)
Baumert, Thomas, Thalweiser, Rainer, Weiss, V., Wiedenmann, Ernst, Gerber, Gustav
The real-time dynamics of multiphoton ionization and fragmentation of molecules - Na_2 , Na_3 - and clusters - Na_n, Hg_n - has been studied in molecular beam experiments employing ion and electron...
Femtosecond probing of sodium cluster ion Na_n ^+ fragmentation (1992)
Baumert, Thomas, Röttgermann, C., Rothenfusser, C., Thalweiser, Rainer, Weiss, V., Gerber, Gustav
We report on the first femtosecond time-resolved experiments in cluster physics. The photofragmentation dynamics of small sodium cluster ions Na_n ^+ have been studied with pump-probe techniques....
Femtosecond probing of sodium cluster ion Na_n ^+ fragmentation (1992)
Baumert, Thomas, Röttgermann, C., Rothenfusser, C., Thalweiser, Rainer, Weiss, V., Gerber, Gustav
We report on the first femtosecond time-resolved experiments in cluster physics. The photofragmentation dynamics of small sodium cluster ions Na_n ^+ have been studied with pump-probe techniques....
Baumert, Thomas, Bühler, B., Grosser, M., Thalweiser, Rainer, Weiss, V., Wiedenmann, Ernst, ...
The dynamics of molecular multiphoton ionization and fragmentation of a diatomic molecule (Na_2) have been studied in molecular beam experiments. Femtosecond laser pulses from an amplified...
Baumert, Thomas, Bühler, B., Grosser, M., Thalweiser, Rainer, Weiss, V., Wiedenmann, Ernst, ...
The dynamics of molecular multiphoton ionization and fragmentation of a diatomic molecule (Na_2) have been studied in molecular beam experiments. Femtosecond laser pulses from an amplified...
Weiss, V, Claverie-Martin, F, Magasanik, B
We studied the effect of phosphorylation of nitrogen regulator I (NRI) on its binding properties. Both phosphorylated and unphosphorylated NRI bind linearly to a single binding site but cooperatively...
Sevenich, F W, Langowski, J, Weiss, V, Rippe, K
Fluorescence anisotropy and fluorescence correlation spectroscopy measurements of rhodamine-labeled DNA oligonucleotide duplexes have been used to determine equilibrium binding constants for DNA...
Mettke, I, Fiedler, U, Weiss, V
NtrC is the transcriptional activator for nitrogen-regulated promoters and, as a response regulator, belongs to the protein family of two-component systems. The activity of all response regulators is...
Phosphorylation of nitrogen regulator I (NRI) of Escherichia coli.
It has previously been shown that phosphorylated nitrogen regulator I (NRI-phosphate) is the activator responsible for increasing the transcription of glnA, the structural gene for glutamine...
During signal transduction, response regulators of two-component systems are phosphorylated in a conserved receiver module. Phosphorylation induces activation of the non-conserved output domain. We...
Weiss, V, Claverie-Martin, F, Magasanik, B
We studied the effect of phosphorylation of nitrogen regulator I (NRI) on its binding properties. Both phosphorylated and unphosphorylated NRI bind linearly to a single binding site but cooperatively...
Sevenich, F W, Langowski, J, Weiss, V, Rippe, K
Fluorescence anisotropy and fluorescence correlation spectroscopy measurements of rhodamine-labeled DNA oligonucleotide duplexes have been used to determine equilibrium binding constants for DNA...
Mettke, I, Fiedler, U, Weiss, V
NtrC is the transcriptional activator for nitrogen-regulated promoters and, as a response regulator, belongs to the protein family of two-component systems. The activity of all response regulators is...
Phosphorylation of nitrogen regulator I (NRI) of Escherichia coli.
It has previously been shown that phosphorylated nitrogen regulator I (NRI-phosphate) is the activator responsible for increasing the transcription of glnA, the structural gene for glutamine...
During signal transduction, response regulators of two-component systems are phosphorylated in a conserved receiver module. Phosphorylation induces activation of the non-conserved output domain. We...
Ependymal cyst of the thoracic spinal cord
Gainer, J. V., Chou, S. M., Nugent, G. R., Weiss, V.
A unique case of an ependymal cyst on the anterior aspect of the thoracic spinal cord in a woman aged 68 years is described. Clinical signs were precipitated by trauma. Recovery of function, while...