A5001320291- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Effects of Vibration on Health
- Balance, Gait, and Falls Prevention
- Business Process Modeling and Analysis
- Neutrino Physics Research
- Diabetic Foot Ulcer Assessment and Management
- Tactile and Sensory Interactions
- Information Technology Governance and Strategy
- Cosmology and Gravitation Theories
- Service-Oriented Architecture and Web Services
- Thermoregulation and physiological responses
- Textile materials and evaluations
- Astrophysics and Cosmic Phenomena
- Cytomegalovirus and herpesvirus research
- Blood groups and transfusion
- Infrared Thermography in Medicine
- Sports injuries and prevention
- Exercise and Physiological Responses
- Nuclear physics research studies
- Lower Extremity Biomechanics and Pathologies
- Health, Environment, Cognitive Aging
- Management and Marketing Education
Chemnitz University of Technology
2016-2025
Goethe University Frankfurt
2019
Max Planck Society
2011-2014
Max Planck Institute for Nuclear Physics
1979-2014
Karlsruhe Institute of Technology
2012
University of Koblenz and Landau
2009-2011
Universität Koblenz
2009-2011
Université Paris Cité
1993-1997
Sorbonne Université
1993-1997
Universität Hamburg
1995-1997
We propose a new production mechanism for keV sterile neutrino Dark Matter. In our setting, we assume the existence of scalar singlet particle which never entered thermal equilibrium in early Universe, since it only couples to Standard Model fields by really small Higgs portal interaction. For suitable values this coupling, can undergo so-called freeze-in process, and way be efficiently produced Universe. These scalars then decay into neutrinos produce correct Matter abundance. While similar...
We consider an electro-weak scale model for Dark Matter (DM) and radiative neutrino mass generation. Despite the leptophilic nature of DM with no direct couplings to quarks gluons, scattering nuclei is induced at 1-loop level through photon exchange. Effectively, there are charge-charge, dipole-charge dipole-dipole interactions. investigate parameter space consistent constraints from masses mixing, charged lepton-flavour violation, perturbativity, thermal production correct abundance,...
We present a scenario where neutrino masses and Dark Matter are related due to global $U(1)_{B-L}$ symmetry. Specifically we consider mass generation via the Zee--Babu two-loop mechanism, augmented by scalar singlet whose VEV breaks In order obtain candidate introduce two Standard Model fermions. They form Dirac particle stable because of remnant $Z_2$ Hence, in this model stability follows from discuss phenomenology model, compare it similar models based on gauged $U(1)_{B-L}$. argue that...
Background/Objectives: Human tendon properties influence athletic performance, and it was shown that Achilles (AT) stiffness correlates with an athlete’s jumping performance across sports. However, the findings on this relationship between basketball soccer are different. Hence, study examined AT in male athletes. Methods: Sixty-six males (24.9 ± 4.7 years; twenty-two players (22.0 4.1 years), forty-four (26.3 4.4 years)) participated. Reactive (reactive strength index (RSI), jump height...
We provide an updated scan of the allowed parameter space two-loop Zee-Babu model for neutrino mass. Taking into account most recent experimental data on $\mu\to e\gamma$ as well mixing angle $\theta_{13}$ we obtain lower bounds masses singly and doubly charged scalars between 1 to 2 TeV, with some dependence perturbativity fine-tuning requirements. This makes difficult observe at LHC 14 TeV even optimistic assumptions luminosity, would require a multi-TeV linear collider see scalar...
We consider a U(1)' gauge symmetry acting on three generations of right-handed neutrinos. The is broken at the TeV scale and its remnant discrete makes one neutrinos stable. As natural consequence anomaly cancellation, neutrino mass matrix consists combination Type I (TeV scale) seesaw radiative correction. stable communicates with Standard Model via s-channel exchange Higgs field boson, so that observed relic density for dark matter obtained in wide range parameter space. experimental...
Abstract Background Dementia and cognitive decline are serious social economic burdens. An increase in the population of older people, as well longer lifespans mean that numbers dementia cases exponentially rising. Neuropathological changes associated with thought to appear before clinical manifestation symptoms, i.e., memory impairments. Further, some adults (OA) experience it can be objectively diagnosed. For optimal care these patients, is necessary detect at an early stage. In this vein,...
Anticipatory and compensatory balance responses are used by the central nervous system (CNS) to preserve balance, hence they significantly contribute understanding of physiological mechanisms postural control. It is well established that various sensory systems regulation balance. However, it still unclear which role each individual (e.g. plantar mechanoreceptors) plays in regulation. This becomes also evident patient populations, for instance diabetics with reduced sensitivity. To...
The thrombopoietin receptor agonist eltrombopag was successfully used against human cytomegalovirus (HCMV)-associated thrombocytopenia refractory to immunomodulatory and antiviral drugs. These effects were ascribed the of on megakaryocytes. Here, we tested whether may also exert direct effects. Therapeutic concentrations inhibited HCMV replication in fibroblasts adult mesenchymal stem cells infected with six different virus strains drug-resistant clinical isolates. Eltrombopag...
The Posturomed device is used as a scientific tool to quantify human dynamic balance ability due unexpected perturbations, and training device. Consequently, the question arises whether such measurements are compromised by learning effects. Therefore, this study aimed analyze inter- intra-day reliability of responses using Posturomed. Thirty healthy young subjects participated (24.3±3.2 years). was equipped with triggering mechanism enable unexpected, horizontal platform perturbations. A...
Skin temperatures are known to increase cutaneous sensitivity. However, it is unclear whether the amount of improved sensitivity differs depending on protocol heat application. Therefore, this study aimed investigate effects active (treadmill walking) and passive (infrared radiator) warming foot sole vibration perception thresholds.
Many companies currently strive to support their employees' work-life balance through appropriate measures in order improve loyalty towards the company and recruit new employees. In this context, flexibility area of working times is a measure that can influence private lives immensely. This why individualisation time arrangements has been accorded high importance current discussions on balance. area, best practice examples be found showing how working-time situation It should noted, however,...
In many clinical disciplines, especially in subjective sensitivity research, data are collected on the ratio scale. This is also true for vibration perception thresholds (VPTs). Hence, such may be of heteroscedastic nature, where amount measurement error increases as values increase. Heteroscedastic a great scientific concern, since standard inferential statistical tests assume homoscedasticity and may, therefore, lead to incorrect interpretations. Unfortunately, only few studies even...
In research, assessing vibratory cutaneous sensitivity is an important research branch to quantify various diseases or develop devices for pattern recognition. The measured vibration perception thresholds (VPTs), however, are subjective and usually result in a large data variability. This might induce difficulties detect differences, example, when comparing different anatomical locations. Hence, higher ability changes desirable. Another feature of VPTs spatial summation, but the literature...
Background Skin is the largest organ of human body and fulfills many important functions, like detecting mechanical stimuli. can be divided into glabrous (non-hairy) hairy skin. These two skin types differ with regard to their properties in distribution mechanoreceptors. Although investigations focus on skin, still plays a fundamental role various activities, e.g ., perception pleasantness or for developing wearable vibrotactile devices pattern recognition persons disabilities....
Studies demonstrated that the older adults can be more susceptible to balance instability after acute visual manipulation. There are different manipulation approaches used investigate importance of inputs on balance, e.g., eyes closed and blackout glasses. However, there is evidence open versus results in a organization human brain functional networks. It is, however, unclear how manipulations affect whether such effects differ between young elderly persons. Therefore, this study aimed...
Monitoring skin sensitivity is studied to clarify its relationship on balance. Measuring performed when subjects are sitting or lying, whereas balance tests measured during standing. However, afferent signal processing and subsequent efferent responses can be altered by different body positions. Therefore, this study investigated whether vibration perception thresholds (VPTs) influenced Sixty-six healthy (41♀; 25♂) participated in study. Five measurements of VPTs were at each the three...
Internationalization in higher education is essential, and although active learning methodologies are increasing allow students to develop transversal skills, most still have a very local scope. In this context, the Collaborative Online International Learning (COIL) methodology an interesting approach benefit students' development. It consists of online program that involves creating multicultural teams specific project. Although expanding, its use physiology scarce. This paper aims show...
We have searched for the exclusive semileptonic decay modes D+→¯Kππe+νe and D+→¯K∗πe+νe in data from Fermilab photoproduction experiment E691. With good sensitivity, we observe no signals channels D+→K−π+π0e+νe D+→¯K0π+π−e+νe, set upper limits of B(D+→all ¯K∗πe+νe)<1.2% ¯Kππe+νe)<0.9%, at 90% confidence level. (For these use isospin invariance to extract which include all charge states.) These are expected be most common decays next dominant ¯Ke+νe ¯K∗e+νe, but observed represent a small...