A5068024917- Advanced machining processes and optimization
- Advanced Machining and Optimization Techniques
- Advanced Surface Polishing Techniques
- Electronic Packaging and Soldering Technologies
- Metal and Thin Film Mechanics
- Tribology and Lubrication Engineering
- Adhesion, Friction, and Surface Interactions
- Aluminum Alloys Composites Properties
- Metal Forming Simulation Techniques
- Mechanical Behavior of Composites
- 3D IC and TSV technologies
- Laser Material Processing Techniques
- Metal Alloys Wear and Properties
- High-Temperature Coating Behaviors
- Mycorrhizal Fungi and Plant Interactions
- Advanced materials and composites
- Surface Roughness and Optical Measurements
- Diamond and Carbon-based Materials Research
- Fungal Biology and Applications
- Engineering Technology and Methodologies
- Manufacturing Process and Optimization
- Additive Manufacturing and 3D Printing Technologies
- Advanced Measurement and Metrology Techniques
- Corrosion Behavior and Inhibition
- Aluminum Alloy Microstructure Properties
Chemnitz University of Technology
2015-2024
Leibniz Institute for Neurobiology
2024
Fraunhofer Institute for Machine Tools and Forming Technology
2013-2023
Leipzig University
2002-2023
Fraunhofer Institute for Cell Therapy and Immunology
2007-2023
Leibniz Institute for High Performance Microelectronics
2023
Merseburg University of Applied Sciences
2017-2020
University of Stuttgart
2020
Walter de Gruyter (Germany)
2020
University of Strathclyde
2019
In recent years, many solder fatigue models have been developed to predict the life of joints under thermal cycle conditions. While a variety prediction proposed for near eutectic SnPb(Ag)-solder in literature, not enough work has reported extending these lead-free soldered assemblies. The development lie requires deep insight into failure modes, constitutive themnomechanical behavior solders and an experimental reliability database. This is needed correlation experimentally determined...
In chronic heart failure (CHF), cross-talk between inflammatory activation and oxidative stress has been anticipated in skeletal muscle (SM). The role of the radical scavenger enzymes superoxide dismutase (SOD), catalase (Cat), glutathione peroxidase (GPX), which remove oxygen radicals, never assessed SM this context. Moreover, it remains unknown whether exercise training augments activity these CHF.Twenty-three patients with CHF were randomized to either 6 months (T) or a sedentary...
Atmospheric plasma jets are being intensively studied with respect to potential applications in medicine. The aim of this vitro study was test a microwave-powered non-thermal atmospheric jet for its antimicrobial efficacy against adherent oral micro-organisms. Agar plates and dentin slices were inoculated 6 log 10 c.f.u. cm −2 Lactobacillus casei , Streptococcus mutans Candida albicans Escherichia coli as control. Areas 1 2 on the agar or complete irradiated helium 0.3, 0.6 0.9 s mm...
Plasma electrolytic processes have gained attention from metal finishing industries due to their capability considerably enhance surface properties. Especially, plasma polishing is an innovative treatment resulting in very smooth, high-gloss surfaces with improved corrosion resistance. Although it has many advantages compared electro polishing, just a few articles been published the field of until now (mainly stainless steel, titanium); machining other materials remains challenging. In this...
1 In this study, the effect of shear stress on expression genes human endothelin-1 system was examined. Primary cultures umbilical vein endothelial cells (HUVEC) were exposed to laminar 1, 15 or 30 dyn cm−2 (i.e. 0.1, 1.5 3 N m−2) (venous and two different arterial levels stress) in a cone-and-plate viscometer. 2 Laminar transiently upregulates preproendothelin-1 (ppET-1) mRNA, reaching its maximum after min (approx 1.7-fold increase). contrast, long-term application (24 h) causes...
The removal of biofilms from microstructured titanium used for dental implants is a still unresolved challenge. This experimental study investigated disinfection and in situ formed using cold atmospheric plasma combination with air/water spray. Titanium discs (roughness (Ra): 1.96 µm) were exposed to human oral cavities 24 72 hours (n = 149 each) produce biofilms. Biofilm thickness was determined confocal laser scanning microscopy 5 each). Plasma treatment carried out ex vivo...
Biomanufactured parts, for implant or generally in-vivo use, have high requirements surface properties. Depending on their field of application, not only smooth, but also well-defined surfaces, i.e. roughness parameters, must be set to allow the respective functionalities such as optimal cell growth minimal friction and wear. While many parts mechanical polishing procedures are state-of-the-art, which time-consuming limited in flexibility, established electrolytic processes often incorporate...
The success of an application programming interface (API) crucially depends on how well its documentation meets the information needs software developers. Previous research suggests that these have not been sufficiently understood. This article presents results a series semistructured interviews and follow-up questionnaire conducted to explore learning goals strategies developers, resources they turn quality criteria apply API documentation. Our show developers initially try form global...
Currently, the demand for surface treatment methods like plasma electrolytic polishing (PeP)-a special case of electrochemical machining-is increasing. This paper provides a literature review on fundamental mechanisms process and discusses simulated experimental results. The simulation shows describes modelling approach effect during PeP process. Based results, it can be assumed that as an machining used roughness processing time predictions. results exhibit correlations with...
Both high Pb-Sn and eutectic 63Sn-37Pb have been the suitable materials for interconnection of electronic components because their low cost appropriate physical properties. Due to environmental awareness, health hazards caused by lead in solders, large efforts made develop a lead-free soldering technology. Among variety solders Sn-Ag alloys are expected be best candidates. Furthermore, from reliability point view, there has interest improved thermal fatigue resistance solder interconnects....
Background Chronic heart failure (CHF) is associated with progressive muscle atrophy and reduced local expression of insulin-like growth factor I (IGF-I). Design The present study was designed to test the hypothesis that deficiency IGF-I in skeletal patients CHF would respond a 6-months aerobic training intervention. Therefore, 18 [mean age 52.4 (SD 4.8) years, left ventricular ejection function (LVEF) 27 6)%] were prospectively randomized either 6 months or sedentary lifestyle. Methods...