Open Access Conference Proceedings

Abstract: In this paper, we report the optimal conditions for the isolation and preconcentration of branched chain amino acids (BCAAs) – leucine, valine and arginine from different types of matrix, such as tissue, plasma, blood, bacteria or cells. Herein, we focused on the synthesis of paramagnetic particles able to isolate and immobilize amino acids and thus preconcentrate it for subsequent analysis on ion-exchange liquid chromatography with VIS detector. [..] Read more

Abstract: Application potential of colloidal particles and nanoparticles is related to their size, shape and other physical and chemical properties. Those properties can be influenced by various ways of synthesis, while the presence of reducing agent and modifiers (polymers, surfactants) are the most vital ones. [..] Read more

Abstract: The aim of the present work was to deposit thin polymer-like films fulfilling several criteria in order to enable their industrial application as protective coatings on various materials, for example plastic substrates. Therefore the films have to be stable, wear resistant with good adherence to the substrate materials and they have to be resistant against mechanical damage. [..] Read more

Abstract: In his work, a manager will come across situations, which will require him to make easy or complicated decisions. The company management often has to take into account the sequence of decisions, of which every decision affects the following one. [..] Read more

Abstract: Forming limit diagrams (FLD) are used to determine process limitations in sheet metal forming, i.e. as a level of formability assisting in the estimation of stamping characteristics. [..] Read more

Abstract: The concept of resilience has gained increasing attention in recent years for its importance and practical implications for a wide range of professionals across different disciplines. To date, much attention has been paid to defining resilience, the possibilities of its measurement, the methodological frameworks for its construction, and simulation models. [..] Read more

Abstract: The paper presents the analysis of non-conformances of metal plates produced in one of Polish steelworks. Selected quality tools were used in the analysis. [..] Read more

Abstract: The need for decision-making is related to management, constituting the substance thereof. Management means the wilful, purposeful influencing of a certain process, phenomenon or situation in order to achieve the required outcome or objective.Therefore, we make decisions in the case of a deviation from the required status and if the achievement of the objective is at risk, or when we get into a situation when the objective can be achieved in several different ways. [..] Read more

Abstract: This article is devoted to the problem of forming of axisymmetric elements of hard-to-deform material. The first stage was the deep drawing process of metal discs. [..] Read more

Abstract: Monitoring the mechanical properties changes is very important to assure structural integrity of NPP components, especially within the context of their operational life extension. Determination of current mechanical properties of several structural materials of NPP components, especially reactor internals, is not possible using the standard testing methods, in connection with the material volume necessary for the testing. [..] Read more

Abstract: The article deals with the possibility of application of infinite-source queuing model in the organization, which provides a non-stop paid telephone information services to the public. Recently, more and more emphasis has been placed on building specialized centres that will be maximally tailored to the customer requirements. [..] Read more

Abstract: National logistics systems can create a single integrated economy, therefore the problem of choosing locations and connecting logistics centres to the network should be one of the most important planning tasks in the area of spatial development. For research purposes, research was carried out in which 150 students of Logistics from 2nd year of study, formulated cognitive maps for the location of logistics centers with a network of links. [..] Read more

Abstract: The decision of what amount of a product to produce in a specific interval may impact seriously corporate earnings. Various methods have been used to eradicate this problem. [..] Read more

Abstract: The process of creating knowledge components which allow preventing the formation of defects in metal products was described. Components are the result of the integration of knowledge from databases containing information on defects in castings, from publications dealing with the problems of metallurgy, and from standards and articles discussing causes of defects in metal products. [..] Read more

Abstract: A significant number of reinforcing components are currently available for the manufacture of aluminum matrix composites. The justified selection of reinforcement determines not only the working capacity of the created composite materials under various operating conditions, but also the fundamental possibility of obtaining the composites by liquid-phase methods. [..] Read more

Abstract: South Africa is amongst the influential producers of gold worldwide. Many results have been published on its ores and different parameters defined. [..] Read more

Abstract: Small punch creep test (SPC test) is an alternative and still developing method to conventional uniaxial creep test and as such can be used for obtaining information about the creep properties of steels and alloys even when only a limited amount of test material is available. SPC method has been also implemented into EN 10371 "Metallic materials – Small punch test method". [..] Read more

Abstract: For additive production, where the material is prepared by applying thin layers, a simplified designation 3D printing has been used. During this production volatile organic compounds and ultrafine particles are emitted into the air. [..] Read more

Abstract: In this work, the dynamic material modelling (DMM) is employed to identify the hot working window that is suitable for hot processing of Duplex stainless steel 2205 (DSS). The Gleeble 1500 thermo-mechanical simulator was used to conduct the investigation, where several hot compression tests were conducted at a temperature range of 850 - 1050 °C and strain rates of 0.001s-1 - 5s-1. [..] Read more

Abstract: The research deals with the evaluation of internal quality of zinc castings in terms of porosity. The castings were produced by high-pressure die casting from ZP0410 alloy, which is an alloy of zinc with addition of aluminium and copper. [..] Read more