Optimierung von Dünnschichtsystemen (2009)
Wielage, B., Wank, A., Rupprecht, C., Schmidt, G., Stark, S.
For lightweight construction the use of high-strength aluminium alloys plays an increasing role. Hence, in forming processes tools are subject to severe stress. Especially abrasive wear and adhesive...
Auslegung beschichteter Werkzeuge zur Umformung hochfester Aluminiumwerkstoffe (2009)
Neugebauer, R., Schmidt, G., Stark, S., Wielage, B., Wank, A., Rupprecht, C.
For lightweight construction of security relevant parts the use of high-strength aluminium alloys plays an increasing role. Hence, in forming processes tools are subject to severe stress. Especially...
Schichtentwicklung für die schmiermittelfreie Umformung von hochfesten Aluminiumwerkstoffen (2008)
Wielage, B., Wank, A., Rupprecht, C., Schmidt, G., Stark, S.
Many applications in light weight construction require massive formed high strength aluminium parts. For economical and ecological reasons the use of lubricants for massive forming has to be avoided....
Magnetoelastic coupling across the metamagnetic transition in Ca2- x Sr x RuO4 (0.2 (2007)
Baier, J, Steffens, P, Schumann, O, Kriener, M, Stark, S, Hartmann, H, ...
Leopold, J., Wank, A., Rupprecht, C., Schmidt, G., Stark, S., Hoyer, K.
In the collaborate research centre 692 "high-tensile Al-based light constructional materials for security-related applications", funded by the German Research Foundation (DFG), new materials are...
Simulation of nanoidentation and penetration tests for coating-substrate-characterisation (2007)
Leopold, J., Schmidt, G., Stark, S., Wielage, B., Wank, A., Rupprecht, C., ...
The paper deals with the finite element simulation of coating subatrate systems and with test methods to determine matarial parameters like Young´s modulus of thin coatings. Two variants of...
Townsend, AT, Palmer, AS, Stark, S, Samson, C, Scouller, R, Snape, I
A number of extraction methods are currently used to characterise metals in marine sediments. These include total digestion involving HF, extraction with concentrated acid, partial extraction with...
Townsend, Ashley T., Palmer, Anne S., Stark, S, Samson, C, Scouller, R, Snape, Ian
A number of extraction methods are currently used to characterise metals in marine sediments. These include total digestion involving HF, extraction with concentrated acid, partial extraction with...
Townsend, AT, Palmer, AS, Stark, S, Samson, C, Scouller, R, Snape, I
A number of extraction methods are currently used to characterise metals in marine sediments. These include total digestion involving HF, extraction with concentrated acid, partial extraction with...
Townsend, AT, Palmer, AS, Stark, S, Samson, C, Scouller, R, Snape, I
A number of extraction methods are currently used to characterise metals in marine sediments. These include total digestion involving HF, extraction with concentrated acid, partial extraction with...
Baier, J., Steffens, P., Schumann, O., Kriener, M., Stark, S., Hartmann, H., ...
The magnetoelastic coupling in Ca$_{1.8}$Sr$_{0.2}$RuO$_4$ and in Ca$_{1.5}$Sr$_{0.5}$RuO$_4$ has been studied combining high-resolution dilatometer and diffraction techniques. Both compounds exhibit...
Thermodynamic properties of the field-induced Neel order of TlCuCl3 (2006)
Stark, S., Heyer, O., Vasiliev, A., Oosawa, A., Tanaka, H., Lorenz, T.
TlCuCl3 shows a quantum phase transition from a spin-gap phase to a Neel-ordered ground state as a function of magnetic field around H_{C0}~4.8T. From measurements of the specific heat c and the...
Thermodynamics of the coupled spin-dimer system TlCuCl3 close to a quantum phase transition (2006)
Lorenz, T., Stark, S., Heyer, O., Hollmann, N., Vasiliev, A., Oosawa, A., ...
We present thermal expansion alpha, magnetostriction and specific heat C measurements of \tal, which shows a quantum phase transition from a spin-gap phase to a Neel-ordered ground state as a...
New methods of surface engineering in forming tools development (2006)
Leopold, J., Schmidt, G., Beier, D., Stark, S., Wank, A., Rupprecht, C.
Due to high thermal and mechanical loads for high security-related aluminium parts new coatings must be developed for forming tools. In the paper some FEA models are presented to simulate the...
Towards Dark Matter Searches with the MAGIC Telescope (2005)
Bartko, H., Biland, A., Bisesi, E., Els\"asser, D., Flix, P., H\"afliger, P., ...
MAGIC is a 17m diameter Imaging Air Cherenkov Telescope installed on the Canary Island La Palma. The telescope is designed for gamma-ray astronomy in the 30 GeV to 30 TeV energy range. Particle...
Search for Gamma Rays from the Galactic Center with the MAGIC Telescope (2005)
Bartko, H., Biland, A., Bisesi, E., Commichau, S., Flix, P., Lorenz, E., ...
The Galactic Center (GC) is a very interesting region for gamma ray astronomy. Various possibilities for the production of very high energy (VHE) gamma rays near the GC are discussed in the...
Pfleger, S., Konstantin Haase, K., Stark, S., Latsch, A., Simonis, B., Scherhag, A., ...
Aims: Persistent foramen ovale (PFO) is found in 9·2–32% of echocardiographic examinations. The gold standard for the detection of a PFO is transoesophageal echocardiography (TEE) and the mostly...
Cohen, B.L., Stark, S., Gawthrop, A.B., Burke, M.E., Thayer, C.W.
Nuclear and mtDNA sequences from selected short-looped terebratuloid (terebratulacean) articulate brachiopods yield congruent and genetically independent phylogenetic reconstructions by parsimony,...
Cohen, B.L., Stark, S., Gawthrop, A.B., Burke, M.E., Thayer, C.W.
Nuclear and mtDNA sequences from selected short-looped terebratuloid (terebratulacean) articulate brachiopods yield congruent and genetically independent phylogenetic reconstructions by parsimony,...
Cohen, B.L., Stark, S., Gawthrop, A.B., Burke, M.E., Thayer, C.W.
Nuclear and mtDNA sequences from selected short-looped terebratuloid (terebratulacean) articulate brachiopods yield congruent and genetically independent phylogenetic reconstructions by parsimony,...
Cohen, B L, Stark, S, Gawthrop, A B, Burke, M E, Thayer, C W
Nuclear and mtDNA sequences from selected short-looped terebratuloid (terebratulacean) articulate brachiopods yield congruent and genetically independent phylogenetic reconstructions by parsimony,...
Bainbridge, A D, Macfadyen, R J, Stark, S, Lees, K R, Reid, J L
1. The antihypertensive efficacy and tolerability of a low dose combination of the angiotensin converting enzyme inhibitor ramipril (2.5 mg) and the extended release formulation of the...