Open Access Conference Proceedings

Abstract: This experimental study aims to assess the effect of selected filler types on the longitudinal thermal expansion of composite systems. The studied issue concerns the dimensional stability or durability of white dental fillings, composite systems of photo polymerizing polymer with particulate fillers of micrometer and nanometer dimensions, mainly based on silica and zirconia. [..] Read more

Abstract: Biodegradable nanofiber materials are widely used for biomedical applications such as tissue engineering. These materials are characterized by submicron fibre diameter, small pore size, and large specific surface area (surface to volume ratio), and this structure is very similar to the natural extracellular matrix and is a favorable environment for the growth of eukaryotic cells. [..] Read more

Abstract: Air-jet spinning (or solution blowing) is a method of nanofibrous production using high-velocity gas flow of air or gas to transform drops of a polymer solution into fibers. The technology is promising for relatively safe applying nanofibers directly to wounds, in-situ application. [..] Read more

Abstract: Among widely electrospun biodegradable polymer materials are aliphatic polyesters: polycaprolactone, polylactide acid or a copolymer of caprolactone and lactic acid (PLCL). Many different modifications of electrospinning can be used to change the fiber structure and, therefore, to set optimal, especially morphological, material effects for application, testing, or treatment with these means. [..] Read more

Abstract: Tissue engineering and regenerative medicine are ever-growing multidisciplinary fields. Along with the development of tissue carriers, methods for testing the biocompatibility of these materials are also being developed. [..] Read more

Abstract: Controlled release of active compounds has been investigated in current medical research and there were developed many approaches, how to control it. For instance, complexation of active compound, encapsulation in matrix, or release from gels. [..] Read more

Abstract: Titanium layers doped with biogenic elements attract much attention due to their ability to enhance the biological integration of implant materials. However, the addition of biogenic elements to the coating/layer changes its composition, structure, properties, and surface morphology, which affects their application possibilities. [..] Read more

Abstract: Over the last decade, drug delivery systems for wound management have undergone a significant evolution as novel nano-based dosage forms and wound dressing pads for active wound management have been developed. Significance of these materials is based on increasing demand for active wound dressing able to battle infection and inflammation in contaminated and slow-to-heal wounds. [..] Read more

Abstract: A large part of composite components undergoes a finishing machining process before assembly. Composite systems – carbon fiber/epoxy resin behave differently than metals during machining. [..] Read more

Abstract: The article deals with the toxic effect of nanotextiles as waste from respirators and face masks. The article is focused on ecotoxicology and basic ecotoxicological tests according to available European standards and Czech legislation. [..] Read more

Abstract: The toxicity of two iron-based nanoparticles: nFe3O4, and nZVI were assessed on freshwater microalgae, Chlamydomonas reinhardtii CC-5325. Microalgae response (total chlorophyll/carotenoids content, photosystem II efficiency, cell shape and total viable cell numbers) to the nanoparticles exposure (100 mg/L) was monitored up to 120 hours. [..] Read more

Abstract: The usage of pharmaceuticals increases worldwide every year. The residues of these substances are excreted by the human or animal bodies and thus come into direct contact with the environment, mainly soils and ground water. [..] Read more

Abstract: Exposure to particulate air pollution has been associated with a variety of health problems. One of the main sources of metal-rich airborne particulate pollution in roadside environments are brake-wear emissions. [..] Read more

Abstract: We present the surface lifetime characterization of the textured silicon surface for the application in solar cells. The measurement by the Sinton WCT-120 PL lifetime tester is compared with the simulation by the Silvaco TCAD software to get possible values of the surface recombination velocity. [..] Read more

Abstract: Surface Enhanced Raman Spectroscopy (SERS) is an important method for characterizing different materials and chemical analytes at low concentrations. The Raman signal plasmonic amplification is strongly dependent on the surface nanostructure. [..] Read more

Abstract: Properties of hydrogels that define their application potential (e.g., stiffness, mechanical strength, transport properties) are primarily based on the morphology of the internal structure. Accurate analysis of the ultrastructure of hydrogels is therefore important for understanding the parameters affecting the functionality of hydrogels. [..] Read more

Abstract: Petroleum-based products as Linear low-density polyethylene (LLDPE) are most commonly used in packaging of products like food, pharmaceuticals, cosmetics and detergents because of his low cost, good mechanical properties, easy processing and flexibility. However the lack of LLDPE as non-degradable packaging material has a major impact on environmental pollution.During the last few decades, petroleum-based products because of improper management and disposal practice cause serious environmental pollution problems that could persist for centuries. [..] Read more

Abstract: Biomedical applications of nanomaterials depend on the size and morphology of nanoparticles and their biocompatibility. However, the armory of trusted protocols usually includes reducing agents, including sodium borohydride, methoxy polyethylene glycol, potassium tartrate, etc., and capping agents, such as sodium dodecyl benzyl sulfate, polyvinylpyrrolidone, etc., which are usually toxic. [..] Read more

Abstract: In this work, was studied the possibility of producing nickel-free stainless ODS steel using liquid metallurgy. In order to investigate the injection of dispersed yttrium oxide into steel, 5 different methods under induction vacuum melting conditions were tested. [..] Read more

Abstract: In this paper, the research of steel flow characteristics using three different shapes of impact pads in a 6-strands tundish is presented.The key purpose of the research presented in this paper was to improve flow characteristics and steel temperature distribution across the whole tundish inner space with the aim of preventing erosion of the refractory lining in the upper section of the inflow area. Simulations were realized for various types and shapes of impact pads. [..] Read more