A5012562036- Air Quality and Health Impacts
- Sinusitis and nasal conditions
- Recycling and Waste Management Techniques
- Occupational exposure and asthma
- Shoulder and Clavicle Injuries
- Heavy metals in environment
- Orthopaedic implants and arthroplasty
- Allergic Rhinitis and Sensitization
- Microplastics and Plastic Pollution
- Elbow and Forearm Trauma Treatment
- Bone fractures and treatments
- Shoulder Injury and Treatment
- Nasal Surgery and Airway Studies
- Geochemistry and Elemental Analysis
- Vehicle emissions and performance
- Brake Systems and Friction Analysis
- Air Quality Monitoring and Forecasting
- Tribology and Wear Analysis
- Orthopedic Infections and Treatments
- Technical Engine Diagnostics and Monitoring
- Oral Health Pathology and Treatment
- Graphene and Nanomaterials Applications
- Vibration Control and Rheological Fluids
- Advanced X-ray and CT Imaging
- Noise Effects and Management
VSB - Technical University of Ostrava
2014-2024
Brno University of Technology
2020
Technology Centre Prague
2018
Considering the well documented, almost ubiquitous nature of microplastics in different environments, exposure pregnant women to may pose risks unborn children. The study focused on investigating presence amniotic fluid and placenta, brings first evidence simultaneous additives both human placentas. In total, 20 samples placenta from 10 patients were analyzed for plastic by Fourier transform infrared spectroscopy - attenuated total reflectance (FTIR-ATR) after alkaline digestion with KOH. 9...
Climate change is creating new challenges for water supply worldwide, making the search sources of vital. As mine could serve as a potential source, this study investigated presence microplastics in from terminated deep mines largest coal basin Czech Republic, well nearby shallow wells. The particles found were analyzed size, polymer composition, color and morphology using ImageJ tool, infrared spectroscopy with Fourier transform (FTIR) an optical stereomicroscope digital camera....
Anodization coloring of titanium tools or implants is one the common methods for differentiation each application by its size type. Commercial purity grade 4 plates (50 × 20 0.1 mm) were tested to obtain their electrochemical and other technological properties. The process was done using potential 15, 30, 45, 60, 75 Volts 5 s in 1 wt. % citric acid demineralized water solution. Organic acids solutions generally produce better surface quality compared inorganic acids. contact angle colored...
The paper deals with metallurgical slags (granulated blast furnace slag, steel ladle slag aggregate, oxygen converter and open hearth aggregate), their chemical phase composition, effects on growth of freshwater green algae. Analytical techniques (X-ray fluorescence spectrometry, X-ray diffraction analysis, infrared spectroscopy, atomic absorption emission spectroscopy) were used for characterization solid samples aqueous leachates. Acute toxicity was assessed using two algal species...
Objective . The aim of this prospective study is to evaluate presence and quantity micro- nanosized particles (NPs) interindividual differences in their distribution composition nasal mucosa. Methods Six samples mucosa obtained by mucotomy from patients with chronic hypertrophic rhinosinusitis were examined. Samples divided into 4 parts according the distance nostrils analyzed scanning electron microscopy Raman microspectroscopy detect solid characterize morphology composition. A novel...
An automotive friction brake pad is a complex system consisting of several components with unique and balanced properties related to operation conditions. There are efforts develop pads longer lifetime better performance wear properties. Those composition the pads, therefore, new materials being evolved. Tuning can be achieved selection functional filler optimizing its amount in formulation pad. Laboratory-developed laboratory-prepared nanocomposite material kaolin/TiO 2 (KATI) has been...
Wear debris from automotive brake systems represents a major source of non-exhaust emissions road traffic and its production increases with number cars worldwide. However, impact wear on the environment organisms is still not clear. One most possible ways by which these particles may affect living oxidative stress. Production reactive species cause damage basic cell components, lipids, proteins, etc. Aim this study to perform characterization airborne nonairborne fractions generated during...
Solid particles, predominantly in micron and submicron sizes, have repeatedly been observed as a threat to human health unique compared the other textures of same materials. In this work, hypothesis solid metal-based particles play role pathogenesis chronic hypertrophic rhinitis was investigated patients who had not responded positively medication. group 40 randomly selected indicated for surgical mucotomy, presence micro- present their nasal mucosa assessed. For comparison, set 13 reference...
Interactions between organisms and micro‐ nano‐sized particles are studied in a relatively new research field—nanopathology. Some diseases (oncological and/or inflammatory) may be connected with accumulation of the tissues. In general, precise accurate qualitative evaluation chemical composition is very important. such analyses, scanning electron microscopy energy dispersive X‐ray spectroscopy used most often. Nevertheless, it reveals merely elemental particles/clusters. On other hand,...
Data on the effectiveness of arthroscopic arthrolysis and extraction osteosynthetic material after osteosynthesis proximal humerus in patients with persisting problems are rare insufficient. In this study, we performed fixation screws, and, where protruding, nail 34 12 months using an intramedullary nail. The treatment was assessed Constant–Murley shoulder score forward flexion difference between treated arm contralateral one. A median increase 16 points CMS 30 degrees reduction recorded...
Abstract The growth of global plastic production and the associated increase in microplastic pollution environment has attracted increasing attention from both scientists general public. Drinking water public supply systems is essential for human life therefore ensuring its high quality a priority. aim this study was to detect identify microplastics drinking systems. Water samples were collected various locations across Czech Republic during two sampling campaigns 2021 2023. A total 58 580...
The presented review aims to summarize the current knowledge of hypersensitivity titanium - a material widely used in medical applications thanks its exceptional chemical stability, resistance corrosion, low specific weight and high strength. metals is usually caused by Type IV immunopathological reaction. Case reports on allergic reactions are rare but actual occurrence can be expected much higher, especially due problematic detection. Although cutaneous patch tests accepted for diagnosis...
This paper evaluates the various approaches to strength and stiffness analysis of fracture osteosynthesis using a headless Herbert screw. The problem has been extensively addressed several scientific approaches, namely analytical approach, stochastic experimental (marginally) finite elements method. is illustrated on use prototype screw Ti: 4.0/1.4 × 30/7 (manufacturer: Medin, Czech Republic) surgical treatment fifth metatarsal fracture. Mathematical equations for calculation maximum...
Metal based particles were detected in pulmonary tumor tissue samples and reference lung (lung without carcinoma) by Raman microspectroscopy scanning electron microscopy. Many of these the size below 1 μm. Using microscopy, on iron found majority samples. Siderite was determined as form several microspectroscopy. The hypothesis that significant statistical dependence exists between presence metals cancer incidence not proved. However, smoking well insignificant correlation titanium...
This study presents the results of pilot measurement, where exposure fine and ultrafine particulate matter was monitored. The measurement performed in welding workplace, these particles are produced unintentionally. consisted collecting information measuring concentration data collection focused only on inhalation exposure. During welding, primarily 300 nm size produced, their is strongly influenced by material, type suction. amorphous terms morphology contain manganese, iron silicon, which...