- Bone fractures and treatments
- Orthopedic Surgery and Rehabilitation
- Shoulder Injury and Treatment
- Elbow and Forearm Trauma Treatment
- X-ray Diffraction in Crystallography
- Total Knee Arthroplasty Outcomes
- Crystallization and Solubility Studies
- Orthopaedic implants and arthroplasty
- Atomic and Molecular Physics
- Hip and Femur Fractures
- Spine and Intervertebral Disc Pathology
- Advanced Chemical Physics Studies
- Knee injuries and reconstruction techniques
- Physics of Superconductivity and Magnetism
- Crystallography and molecular interactions
- Sports injuries and prevention
- Pelvic and Acetabular Injuries
- Spinal Fractures and Fixation Techniques
- Shoulder and Clavicle Injuries
- Quantum, superfluid, helium dynamics
- Mass Spectrometry Techniques and Applications
- Reconstructive Surgery and Microvascular Techniques
- Insect and Pesticide Research
- Optimization and Packing Problems
- Foot and Ankle Surgery
Justus-Liebig-Universität Gießen
2020-2023
BG Klinikum Hamburg
2006-2022
GSI Helmholtz Centre for Heavy Ion Research
2020
University of Regensburg
2018
Agence Nationale pour la Gestion des Déchets Radioactifs
2012
Darmstadt University of Applied Sciences
2010
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2010
Chemnitz University of Technology
2008
Unfallkrankenhaus Berlin
2002-2006
BG Klinikum Duisburg
2001
Abstract Electron-ion collision spectroscopy at heavy-ion storage rings aims precision measurements of resonance features that occur in the cross sections electron processes such as electron-impact ionization ions or electron-ion recombination. As part international FAIR project low-energy ion ring CRYRING@ESR has been coupled with accelerators operated by GSI Helmholtz Center for Heavy-Ion Research Darmstadt, Germany. This opens up a new perspective testing strong field quantum...
Because bin-picking effectively mirrors great challenges in robotics, it has been a relevant robotic showpiece application for several decades. In this paper we describe the computer vision algorithms combination with sophisticated control schemes of robot and demonstrate reliable robust solution to chosen problem. This approaches issue by applying latest state-of-the-art hardware components, namely an impedance controlled lightweight Time-of-Flight camera. Lightweight robots have gained new...
Colony Defence in Asian Honey Bees. 1. In Ais cerana, Apis dorsata and florea a defence behaviour (Körperschütteln) can be released by the approach of flying insects. Films cerana colonies exhibiting this were made anaylysed. 2. Körperschütteln "could not various mechanical chemical" stimuli. Only movement dark object before light background was effective releasing behaviour. 3. The optimal angular velocity when moved on moving disk between 80 degrees to 250 per sec. size for stimulation 5...
Carbon $1s$ core-hole excitation of the molecular anion C$_2^-$ has been experimentally studied at high resolution by employing photon-ion merged-beams technique a synchrotron light source. The experimental cross section for photo--double-detachment shows pronounced vibrational structure associated with $1\sigma_u\to3\sigma_g$ and $1\sigma_g \to 1\pi_u$ core excitations ground level first excited level, respectively. A detailed Franck-Condon analysis reveals strong contraction 0.2~\AA\ upon...
We describe the rare case of a 12-year-old boy complaining repetitive severe pain in left thigh, during physical activity related to femoral neck stress fracture. Even though fractures are common adult athletic population, they occur rarely children, with epiphyseal growth plates still open. Diagnosis is delayed as only unspecific changes found when conventional radiography performed. For adequate treatment, early diagnosis by MRT or bone scintigraphy essential. Conservative treatment will...
We investigate the solvent shift of phthalocyanine (Pc) doped into superfluid helium droplets and probed by optical spectroscopy at electronic origin. Our present work complements extant studies provides results that in part contradict previous conclusions. In particular, does not increase monotonously with droplet radius all way up to bulk limit, but exhibits just reverse dependence instead. Moreover, a substructure is resolved, whose characteristics depend on size. This behavior can hardly...
The aim of the present study was to evaluate retropatellar contact characteristics at different angles flexion knee joint. To this end, 6 cadaveric legs were examined using pressure sensitive film (Fuji Prescale type "super low") 45 degrees, 60 90 degrees and 120 both in neutral rotation 10 internal external femur same joints. A force 140 N applied vastus medialis lateralis, a comparison made with medially laterally dominating muscle force. areas decreased increasing flexion. traction...
Von Januar 1999 bis Oktober 2004 behandelten wir insgesamt 42 Patienten mit geschlossenen distalen Unterschenkelfrakturen und ohne Gelenkbeteiligung in einem zweizeitigen Vorgehen: Zunächst erfolgte die Anlage eines gelenkübergreifenden Fixateur externe am Unfalltag; sekundär wurde nach durchschnittlich 8,3 Tagen auf ein winkelstabiles Implantat zur offenen Reposition internen Stabilisierung umgestiegen. Als Komplikation sahen 3 oberflächliche Wundrandnekrosen, 2 Fällen eine unzureichende...
We investigate the line shape at electronic origin of single porphine molecules doped into superfluid helium droplets as a function droplet size. Helium comprised less than 105 atoms are generated from an expansion gaseous helium, while with more originate liquid helium. In contrast to our recent study on phthalocyanine, is found exhibit solvent shift blue respect gas-phase resonance frequency well multiplet splitting. A comparison helium-induced features phthalocyanine and those obtained in...