Open Access Conference Proceedings

Abstract: Nanoindentation has become a popular tool for the exploration of mechanical properties of materials at the nanoscale. However, calibration and traceability issues are often neglected, making the direct comparison of results between different instruments difficult. [..] Read more

Abstract: This study investigated the stabilization of cadmium sulfide (CdS) nanoparticles in aqueous solutions of the triblock copolymer Pluronic P123. The concentration of the added cadmium sulfide varied between 0.002 and 0.02 M. [..] Read more

Abstract: Here we report the optimal conditions for the isolation of reduced glutathione (GSH) and oxidized glutathione (GSSG) from various types of matrix, such as blood, plasma or cells and their characterization using ion-exchange liquid chromatography with VIS detector. In our study, we aimed to synthesize paramagnetic microparticles able to isolate and immobilize GSH, GSSG from blood or plasma and thus preconcentrate it for subsequent analysis on ion-exchange liquid chromatography with VIS detector. [..] Read more

Abstract: The aim of this work was study molecular and quantitative analysis of metal ion binding to humic acids (HAs). The object of our study were two various samples of HAs. [..] Read more

Abstract: The article presents the results of the milling tests - "hard machining" - on the processed (hardened and tempered) material X37CrMoV5-1 (ČSN 19552). At the beginning, the hardness tests of the machined material block were carried out using the Rockwell method. [..] Read more

Abstract: The critical strain for initiation of dynamic recrystallization is an important value in case of thermomechanical process design. In this research, different models have been utilized to describe hot compression flow curves of C45 carbon steel up to the peak point. [..] Read more

Abstract: Powder metallurgy is widely used in technical practice to manufacture products with specific properties. In the field of ammunition, powder metallurgy technology is used to produce frangible bullets designed for fire arms.This paper presents results of pressing of experimental cylindrical samples from mixture of Fe – Sn metal powders. [..] Read more

Abstract: Ecodesign of blades used in steam turbines is the example of integrating environmental aspects into the process of designing and development of a product during life cycle. The life cycle of blades begins with extraction of raw materials and manufacturing steel products used as material charge in the process of their production. [..] Read more

Abstract: The main purpose of this article is to show how it can be used Hamiltonian graphs and their property in the software designing and testing. In the article there are described Hamiltonian graphs that are necessary to understand the content of the research conducted in a frame of R&D project called "The prototype of an innovative and technologically advanced OPTIbud B2B platform that supports the management of construction processes through the integration of data and information from multiple sources", funded by the National Research and Development Centre under the INNOTECH program, Hi-Tech path. [..] Read more

Abstract: In this study magnesium based composite AX41 reinforced with short Al2O3 fibers were investigated. In-situ neutron diffraction has been applied to study deformation mechanisms under compressive deformation. [..] Read more

Abstract: The problem of current freight transport lies in a plenty of smaller shipments that are delivered daily to the same collection points. Consumers and Distribution centers have found the possibility to reduce the amount of money in stock if they order only those goods that they are able to sell in a short time. [..] Read more

Abstract: Light extraction (LE) efficiency of GaN buffer layer was studied by angle-resolved photoluminescence. We measured enhancement of light extraction efficiency (LEE) up to 154% by introducing the SiNx layer atop the GaN buffer and subsequent GaN light extraction layer (LEL) overgrowth. [..] Read more

Abstract: The paper sets an example of modeling the expansion and bed pressure drop of the cohesive and problematic material - titanium dioxide modified by Aerosil R972 in program Ansys / CFX - Fluent using two multiphase models, Euler Fluid-Granular Model and Dense Discrete Phase Model at certain predefined conditions in a square section fluidized bed cell. The variables bed pressure drop, particle concentration in volume and velocity field of solid particles were defined for the simulations in metallurgical processes.The research follows on from the previous study of simulating the arrangement of spherical particles with a diameter of 2-10 mm and compares them with the experiment, where it was discovered, that the square section fluidized cell achieves the best results with spherical particle arrangements of diameter 8 mm.. [..] Read more

Abstract: Al-Si alloys alloyed with Mn and Mg are widely used in industry, especially as cast alloys. The presence of Mg allows subsequent heat treatment, which will improve mechanical properties. [..] Read more

Abstract: Steels dusts from electrostatic processes, which are currently a problem in the ecological sense, is a rich but problematic carrier of many elements such as Fe, Zn, Mn, Cr. The existing recycling technologies, unfortunately, do not allow for their full recovery. [..] Read more

Abstract: This paper present the issue of plasma treatment of the surface of polypropylene (PP) using AgO+CuO coatings in order to antimicrobial activity. The analyzed coatings were deposited using High Power Impulse Magnetron Sputtering (HPIMS). [..] Read more

Abstract: Mechanical properties of steel workpiece are often evaluated based on its hardness. For quenched and tempered steels, hardness can be predicted based on quenching and tempering processing parameters. [..] Read more

Abstract: Duplex steels are an austenitic-ferritic type of stainless steel. They have better mechanical strength, corrosion resistance, and fatigue strength in aggressive environments compared to traditional stainless steels in the food industry such as AISI 316 or 304. [..] Read more

Abstract: The interaction between light and matter can be significantly enhanced through the excitation of surface plasmons and related nanospace-restricted focusing of light energy. The local enhancement of light energy is especially pronounced in the case of so-called plasmonic hotspots, which have found wide application in surface-enhanced Raman spectroscopy (SERS). [..] Read more

Abstract: In this study, the reaction mechanisms of gold nanoparticles (AuNPs) synthesis using dialdehyde cellulose (DAC) and dialdehyde hyaluronate (DAH), and their covalent binding to chitosan nanofibers (CHITs), was investigated. The synthesis uses a redox reaction where dialdehyde polysaccharides are oxidized to dicarboxy polysaccharides and the gold salt precursor is reduced to elemental gold. [..] Read more