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Purpose: Attributable to the depletion of raw materials and for sustainability purposes in construction works. Therefore, this study looked into the effects of nano blast furnace slag (BFS) on the microstructure, mechanical properties, and durability of mortar. BFS was substituted for cement at various weight percentages of 0, 1, 1.5, 3, 5, and 7%. Design/methodology/approach: A suspension of water...
Purpose Hydroponics, also known as controlled environment agriculture, is a method of cultivating plants and herbs without soil using mineral-supplemented solutions. Agriculture biotechnology enhances its wings on developing genetically modified plants for expanding crop yield and introducing characteristic features such as growing seasonal crops throughout the year, weather-resistant, and pest resistance...
Purpose The results showed that the UA powder has a finer average particle size with a narrower statistical distribution of particles than those made by the GA method. Because the UA powder has a higher sphericity and lower porosity, Generally, UA offers better-quality powders in terms of properties such as higher tap density, better flowability and low oxygen content. Design/methodology/approach...
Purpose The article presents legal regulations and principles for the safe operation of buildings in winter and proposes a procedure for clearing snow from flat roofs. Findings The Construction Law regulates the activities involving building design, construction, maintenance, and demolition and defines the operation principles of public administration bodies in these areas. Research limitations/implications...
Purpose This study focuses on determining the best possible structure of the orthosis made with FDM 3D printing technology. To produce the samples, a thermoplastic PLA material was selected that met the conditions of biodegradability, biocompatibility and non-toxicity. The samples produced were subjected to a tensile strength test and corrosion resistance. Design/methodology/approach Studies based...
Purpose This study aimed to determine the effect of metal base removable partial dentures (MRPDs) and acrylic base removable partial dentures (ARPDs) on oral health-related quality of life. Design/methodology/approach The study was conducted on 40 patients. Twenty received ARPDs (nine in the maxilla and eleven in the mandible), and twenty received MRPDs (nine in the maxilla and eleven in the mandible)...
Purpose The purpose of this paper is to discuss the problem of culture in the workplace, which has been becoming increasingly popular recently. Findings Culture has many meanings and synonyms in the Polish language - we can talk about good manners, rules of savoir-vivre, social etiquette, or politeness. Most people intuitively know how to behave in situations outside of work. In recent years, discussions...
Purpose In past decades, experiments have been done to find the properties of plant polyphenols and their protective role in various diseases. In the present study, a brief review has been done on flavonoids’ protective role in different diseases and controlled drug delivery systems that can be feasible for improving flavonoids’ bioavailability as well as their efficacy in the biological system. Design/methodology/approach...
Purpose This study aims to investigate the adhesion of combining two materials with different properties (PLA-TPU and TPU-PLA) printed in FFF (fused filament fabrication) with post-processing treatments. Design/methodology/approach The scope of the study includes making variants of samples and subjecting them to three different post-printing treatments. After processes, shear tests were conducted...
Purpose Nowadays, product development is very important to remain competitive in the market, one of which is to reduce the assembly of time and cost design. This article discusses the study of iron products on the market. Based on the problems found in the SMEs of Electronic Services, this iron has many components and complex designs that take time-consuming to assemble. Therefore, the purpose of...
Purpose The purpose of this work is to study the processes of hydrate formation during the operation of wells and underground gas storage facilities. Development of a set of measures aimed at the prediction and timely prevention of hydrate formation in wells and technological equipment of gas storage facilities under different geological and technological conditions. Design/methodology/approach The...
Purpose This paper investigates the possibility of successfully welding a Low Alloy Steel (LAS) stud to Galvanized Steel (GS) plate. Design/methodology/approach Arc Stud Welding (ASW) was performed on joining LAS studs to GS plates. Welding parameters were selected based on weld trails. The first tests of the welded joints were based on visual inspection for welding defects such as lack of fusion...
Purpose The article presents a statistical analysis of strength parameters of newly developed epoxy-glass composite materials modified with the addition of rubber recyclate. Design/methodology/approach Three variants of materials with a percentage of recyclate content in the composite matrix of 3%, 5%, 7% and a reference variant without the addition of recyclate were used for the study. The samples...
Purpose The aim of this work was to prepare and characterise geopolymer composites containing lightweight aggregates - perlite and vermiculite. Design/methodology/approach The geopolymer matrix was prepared on the basis of fly ash, sand and a 6M sodium hydroxide solution with sodium silicate. The properties of the materials were tested 28 days after the preparation of the samples. The following research...
Purpose Silica/silicate scale is a significant problem, especially in oilfield production during Alkaline Surfactant Polymer (ASP) flooding, where chemical inhibitors are the preferred method to prevent them. In this study, the effect of inhibitor vinyl sulfonated copolymer (VS-Co) on silica/silicate scale formation was analysed using X-Ray Diffraction (XRD) and Fourier-transform infrared spectroscopy...
Purpose This paper presents the issue of welding technology qualification using the example of structural steel S355JR with a plate thickness of 25 mm and 100 mm, bevelling ½V. The main objective of this work was to attempt to perform a full qualification of the submerged arc welding process in accordance with the requirements of PN EN ISO 15614. Particular attention was paid to the issue of the qualification...
Purpose This review analyses different approaches used to study selective laser sintering (SLS) technology of polymer materials. These main approaches concern: thermal behaviour, fatigue and surface roughness. Design/methodology/approach Regarding the first behaviour, researchers extensively studied the impact of process parameters, including scan speed, laser, power and laser energy density, on the...
Purpose The necessity of developing new multi-parameter electromagnetic methods to obtain the information on controlled wastewater samples from fruit juice production has been proved. Based on the universal transformation functions G = f(x) and φ = f(x) obtained in the work, which relates the amplitude and phase components of the multi-parameter MFP signal with the parameters of wastewater samples,...
Purpose of this paper is to propose modernisation activities, including the improvement of machines and devices that will increase work safety during the epidemic state for the workplace of an injection moulding machine operator in a selected manufacturing company. Design/methodology/approach In the work brief analyses of a production line and a workplace of an injection moulding machine operator...
Purpose In this study, an environmentally friendly metal matrix was prepared, and the influence of eggshell powder and CaCO3 particles on the tensile strength and hardness of recycled aluminium were assessed. Design/methodology/approach A matrix made of recycled aluminium was employed. Calcium carbonate and eggshells served as the study's reinforcing materials. Separately, weight percentages of 2,...
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