bluuebunny/crossref_metadata_2025 huggingface dataset:
THE IMPORTANCE OF INHABITANS' EMERGENCY PREPAREDNESS WITH REGARD TO THEIR QUALITY OF LIFE
Authors: Kubas Jozef , Kollar Boris , Petrlova Katarina , Blazkova Katerina
Published: December 2024

We are currently facing various forms of emergencies that affect the quality of life of the inhabitants. Their impacts can have a significant impact on physical, psychological and social health and can negatively affect people's quality of life. Preparedness and training are crucial not only for public authorities, but also for the inhabitants, in order to minimize the consequences of various crisis situations. Quality of life indicators include the quality of housing, which includes the factor of safety. In the context of security, it is important to focus attention, among other things, on the views of inhabitants and how emergencies affect their quality of life. This can help to ensure an improved quality of life for people who find themselves in or threatened by these situations. When public authorities and the inhabitants work together and coordinate, the negative impact of emergencies can be reduced, thereby ensuring safety and security for the inhabitants. The aim of this paper is to find out the impact of emergencies on the quality of life of the inhabitants. A questionnaire survey of inhabitants was used to determine the impact, and the information obtained was then analyzed and statistically evaluated. This allowed to propose solutions to improve the inhabitants' preparedness for emergencies and at the same time to improve their quality of life.
THE USE OF SAP FLOW SENSORS IN IRRIGATION MANAGEMENT OF ROYAL WALNUT (JUGLANS REGIA L.)
Authors: Barek Viliam , Obrocnik Oliver , Kiss Vladimir , Barekova Anna , Paulen Oleg
Published: December 2024

Pervasive environmental stressors, particularly water deficits, have a major impact on plant production, diverting necessary energy away from growth and development to mitigate stress effects. This study addresses the impact of several water regimes (irrigated and non-irrigated) on royal walnut individuals (Juglans regia L.) in an orchard in western Slovakia. Our analysis focused on sap flow measurements using the stem heat balancing method from July 13 to September 21, 2021. In the midday hours, the sap flow rate measurements reached their highest daily levels. The irrigated variety had the maximum flow rate of 287.99 g.h-1. The Highest sap flow rate in the non-irrigated variant was 148.33 g.h-1. In the irrigated variant, the soil water content reached 41.61 %. Non-irrigated variant reached only 20.47 % of soil water content. The obtained data showed us the differences between irrigated and non-irrigated variants. The imperative for continued re-search emerges as additional data are needed for the optimization of irrigation strategies.
CHALLENGES OF THE CIRCULAR ECONOMY IN LATVIA IN THE CONTEXT OF THE EU LONG-TERM STRATEGY
Authors: Leibus Inguna , Mazure Gunita , Filipova Luize
Published: December 2024

The circular economy is targeted to increase the efficiency of resource use through prevention of waste and pollution; preservation of products and materials in circulation as long as possible and maintenance of natural capital. Therefore, the research authors aim to study the management of household waste and resources in Latvia in the context of other EU Member States in order to achieve circular economy targets. The study employs the monographic method, statistical data analysis and the correlation analysis to calculate the relation between the economic development and the amount of household waste in Latvia. The authors conclude that the amount of household waste in Latvia is increasing along with the economic development. The disposal of waste in landfills and the insufficient level of household waste recycling generate the largest problems. Better results are achieved in the recycling of paper, cardboard and glass packaging, while the recycling of plastic is not sufficient and there is a risk of not reaching the goals set by the EU. The proportion of reused materials is significantly lower than the EU average and, hence, the efficiency of resource use is twice as low. A significant improvement of the situation in Latvia requires a set of several measures. Along with economic instruments, an increasing attention should be paid to public education, which also includes raising the awareness of producers and packers about more environmentally friendly materials and new opportunities for reducing packaging.
CROP PROTECTION COSTS AND FARMING INTENSITY IN LATVIA
Authors: Bratka Valda , Praulins Arturs
Published: December 2024

Nowadays, sustainability has become the core concept affecting the public perception of economic development and natural resource management all over the world. Although intensification of agricultural practices is typically viewed as a way to achieving and retaining food independence at national and supra-national levels, there are concerns about its potential negative impact on biological diversity, natural habitats, healthy ecosystem and resilience to climate change. As a result, intensive farming might be regarded as unsustainable, damaging and environmentally unfriendly mode of agricultural production. This study aims to conduct a comparative analysis of the trends in intensification of agricultural practices adopted by crop farms of various economic sizes and specialization in Latvia since its accession to the EU in 2004. Our calculations are based on information obtained from SUDAT � a national system of data collection in Latvia that constitutes an integral part of the EU Farm Accountancy Data Network (FADN). Statistical data are adjusted for inflation and input price fluctuations using the price indices of the means of agricultural production. In our analysis, crop protection costs are used as an environmental indicator of natural resource and biodiversity conservation. Results provide evidence of high heterogeneity in farming intensity in Latvia where sustainable crop farming coexists with conventional farming based on intensive production technology.
INVESTMENT PROMOTION AND ATTRACTION TO BIOECONOMY INDUSTRIES IN LATVIA
Authors: Pilvere Irina , Upite Ilze , Nipers Aleksejs , Pilvere Aija
Published: December 2024

Investments made in response to climate change could help to foster environment-friendly business practices. Therefore, bioeconomy industries are considered crucial for achieving climate neutrality in Europe by 2050. Accordingly, bioeconomy strategies have been designed in many countries, including in Latvia. Therefore, the aim of the present research is to examine the investment environment and the amounts of gross investment made in bioeconomy industries, as well as foreign direct investment attracted to Latvia to contribute to the implementation of the Latvian Bioeconomy Strategy 2030. The research covered the period 2015-2022 and was based on publicly available information on investment. The research found that significant investments were made in bioeconomy industries during the period analysed; however, the amount of gross investment made and the growth rate were insufficient to achieve the target set by the strategy by 2030, i.e. to reach the total investment of EUR 20 billion in the bioeconomy industries. The most investments were made in companies engaged in the primary sector, energy generation and manufacture of wood products. In addition, compared with the rest of the Baltic countries, foreign direct investment as a % of gross domestic product (GDP) was the lowest in Latvia. Therefore, it is important that measures are taken in the country to enhance the investment environment, as well as encourage and stimulate investments � both private and public � by means of various support measures to foster growth not only in bioeconomy industries but also in the entire national economy.
THE ROLE OF SEARCH ENGINE OPTIMISATION IN CUSTOMER DECISION MAKING IN DIGITAL MARKETING FOR SUSTAINABLE DEVELOPMENT
Authors: Ozola Inta , Libkovska Una , Indriksone Sandra
Published: December 2024

Search engine optimisation as a separate concept has not been researched extensively compared to other digital marketing tools in Latvia. The aim of this study is to analyse the decision-making process of custumers in the choice of services placed on the internet market for sustainable development. The study is planned to be carried out in five phases, analysing and structuring the offer of companies in different sectors and the choices made by consumers on websites. This article summarises data from the first phase of the study, which analysed companies in the tourism sector. The data reflects the offer of the tourism sector's green deal leisure and sports entrepreneurs on websites and consumer preferences for sustainable development services. The research methods have been chosen to gain insight and analyse the data on the availability of the offer of tourism enterprises on their websites for sustainable development. Using a case study approach, the study data is collected from consumer surveys. Expert interviews have been carried out to gather information on the understanding of business managers on the conditions of consumer decision-making processes for sustainable development. Search engine optimisation could be one of the most effective tools that entrepreneurs can use for sustainable business development and to encourage customers to make a decision on the choice of service. The data from this study will be used in the next stages of the study to compare consumer decision-making in the online marketplace for sustainable development across different sectors.
ON LEGISLATION AND SOME ASPECTS OF OCCUPATIONAL SAFETY IN GEORGIA
Authors: Lanchava Omar , Bezhanishvili Alexander , Abshilava Anzor , Ratiani Nino
Published: December 2024

The Constitution of Georgia provides the main principles of protection of employees and employers at job places, concerning healthy and safety conditions. The paper reviews the new Laws of Georgia pertinent to labor safety, elaborated and approved during the last years. These Laws regulate social-economical, technical, hygienic and other conditions of work of employees at job places. These are Laws, destination of which to secure the workers health and safety in the present, future and must not have a negative influence on the generation. It�s indicated that at present technical supervision over the objects with increased technical danger in different branches of industry of Georgia is provided according to the Law of Georgia Code of Product Safety and Free Circulation by LLC Technical and Construction Supervision Agency. In paper are described the individual and collective protective means for employees� industrial traumas and occupational diseases prevention, as well as hardware components, used at different enterprises of Georgia. The data about occupational diseases at Georgian enterprises are given. The paper reviews the data about microclimate of the working zone � temperature, relative humidity, pressure, velocity of air stream, as well as about other important parameters of job places � dust, noise, vibration, radiation. The paper considers problems, dealing with electro safety, the reasons which provoke damages and the means of first aid in case of damages, provoked by electric current. The issues of influence of road tunnels fire safety and aerodynamic resistance with respect to air average velocity and consumption are considered as well.
CLASSIFICATION OF NANOBEARINGS AND MATHEMATICAL FORMULATION OF THEIR OPERATION
Authors: Vorobyov Alexander , Vorobyev Kirill , Mamasaidov Zhamaletdin , Mohamad Ali Alawiyeh , Chekushina Tatiana
Published: December 2024

Nanomechanical systems necessitate components with unparalleled precision and minimal frictional resistance to achieve optimal performance. Nanobearings represent a critical class of components that facilitate rotational or linear motion at the nanoscale. This paper presents a comprehensive classification of nanobearings, encompassing their structural attributes, materials employed, and operational mechanisms. Additionally, it provides a detailed mathematical formulation that describes the static and dynamic behavior of nanobearings, including equations for load capacity, friction torque/force, and stiffness. Numerical examples illustrate the application of these mathematical models in analyzing the performance of diverse nanobearing types. The findings provide invaluable insights for designing and optimizing nanobearing-based devices utilized in a wide range of applications spanning precision engineering, microfluidics, and biomedical engineering domains.
This expanded version delves deeper into the significance of nanobearings in nanomechanical systems and highlights the crucial role they play in enabling precise and low-friction motion at the nanoscale. It also emphasizes the importance of the mathematical formulation presented in understanding and predicting the behavior of nanobearings, which is essential for designing and optimizing nanobearing-based devices for various applications.
DEVELOPMENT OF METAL-POLYMER LAMINATE WITH HIGH MECHANICAL PROPERTIES
Authors: Baliashvili Giorgi , Kvinikadze Sophiko , Iashvili Tamar , Tsverava Davit , Vanishvili Aleksandre
Published: December 2024

Basalt fiber-reinforced metal-polymer composites represent a cutting-edge class of materials that merge the robustness of metal with the pliability of polymer. Originating from natural volcanic rocks, basalt fibers possess remarkable mechanical properties, such as high tensile strength, resistance to extreme temperatures, and chemical inertness. Integrating basalt fibers into a polymer matrix like epoxy or thermoplastic resins significantly boosts the composite's resistance to dynamic impacts and its energy absorption capacity. The metal component ensures structural integrity and strength, while the polymer matrix distributes energy through elastic deformation. Basalt fibers find application across various industries, including aviation, automotive, and military technology.
There are research centers and scientific groups whose work is focused on developing polymer composite materials reinforced with basalt fibers. These metal-polymer composites are especially valuable for their application in an automotive industry, aerospace and construction, due to their high strength to weight ratio, as well as for the ability to absorb impact energy, flexibility in design and chemical resistance.
The objective of this study is to develop a technology for producing basalt fiber-based metal-polymer composites and to investigate the physical and mechanical properties of these materials. Using Vacuum Infusion Process (VIP) technology, metal-polymer composites incorporating basalt fiber were produced. The resulting samples exhibit high bonding strength, uniform polymer distribution within the matrix, and a straightforward manufacturing process. Experimental samples of the metal-polymer composites, produced using VIP technology, were tested under mechanical and dynamic loads.
DEVELOPMENT OF RECOMMENDATIONS ON THE APPLICATION OF CORROSION-RESISTANT NANO-CEC FOR HEC WATER PUMPS PROTECTION
Authors: Kemelzhanova Aiman , Zhamanbayeva Gulsara , Atchibayev Rustem , Kemelzhanova Sandugash
Published: December 2024

Modern electrochemical technologies for surface treatment of chromium based electrolytic coatings to create protective, antifriction materials are considered.The physicochemical fundamentals of the processes of electrolytic formation of conversion and composite electrolytic coatings are highlighted. The purpose of our researches is working out technology of nano-structured composite electrolytic coatings obtaining and revealing optimum mode for effective corrosion proof coatings electroplating. The coatings were developed for Heat Electro Central (���) equipment, in particular for water pumps details. Coatings were obtained from electrolytes with different concentrations of silicon dioxide at temperatures and current densities for corrosion resistance using the gravimetric and potentiodynamic method in a 3% NaCl solution. The results showed that the highest corrosion resistance have coatings, received at current density 4 �/dm2 and temperature 333 K with concentration 20-30 g/ dm3 SiO2.
EVALUATION AND PREDICTION OF RESISTANCE OF PLATE-LIKE HEAT EXCHANGERS MADE OF 06KhN28MDT ALLOY (ANALOGOUS TO AISI904L STEEL) TO CREVICE CORROSION IN RECYCLED WATER OF ENTERPRISES
Authors: Dzhus Anna , Greshta Victor , Pulina Tetiana , Snizhnoi Gennadii
Published: December 2024

The article develops one-dimensional linear regression mathematical models that establish the relationship between the activation potentials Ecrev, repassivation Erep, and corrosion Ecor of the 06KhN28MDT alloy used in the production of plate-like heat exchangers and its chemical composition and structure components in model recycled water. It has been found that the limiting potential Elim of the alloy shifted in the positive direction with an increase in the content of Cr, Mo, Si, S, the volume of titanium sulphides Vs, and a decrease in Mn. It has been found that its positive effect on Elim increased in the following order: S, Mo, Ti, Cr, Vs, Si. It is assumed that silicon, chromium, titanium, and molybdenum create mixed oxide films on the alloy surface that contribute to the repasivation of local corrosion damage in the gap between adjacent heat exchanger plates. It has been found that the corrosion potential of Ecor alloy shifted to the negative side with an increase in its Ni content and a decrease in Ti. It has been found that Ni increases and Ti decreases the alloy's resistance to crevice corrosion in chloride-containing media, since the higher the value of ?E = Elim - Ecor, the higher it is. In general, it has been found that the higher the Ti content in the alloy, the higher its resistance to crevice corrosion in a chloride-containing media, since Ti has a 6-times stronger effect on the potential Elim than Ecor. It has been found that the crevice corrosion potential of Ecrev alloy shifted in the positive direction with an increase in the content of Cr and Ti and a decrease in C. It is assumed that Cr and Ti create mixed oxide films that effectively counteract the activating effect of chloride ions, and C creates carbides that activate local corrosion processes. The developed mathematical one-dimensional linear regression models are recommended for use in assessing and predicting the resistance of plate-like heat exchangers made of 06KhN28MDT alloy (analogue of AISI 904 L steel) to crevice corrosion in recycled water of enterprises.
POLYLACTIC ACID/ZINC OXIDE NANOSTRUCTURED FIBROUS MATERIAL BY NEEDLELESS ONE SOLVENT ELECTROSPINNING FOR PROTECTION AGAINST TICK-BORNE DISEASES
Authors: Rampane Liga , Zelca Zane , Salmi Chaima
Published: December 2024

Ticks (Ixodidae and Argasidae) pose significant health risks as vectors for infectious diseases, with their prevalence expanding across Europe and North America. Ticks employ sophisticated sensory mechanisms, notably utilizing Haller's organs, to locate and sense their hosts. These sensory structures detect various cues, including chemosensation, changes in atmospheric CO2 concentration, and radiant heat emitted by potential hosts. Once a host is detected, landing is facilitated by electrostatic attraction, accelerating the precise positioning of the tick for feeding.
Reports indicate that ZnO nanoparticles exhibit acaricidal activity. The strong thermal and electrical conductivity of ZnO may effectively impede tick host-seeking mechanisms. This study focuses on fabricating ZnO-containing nanostructured polylactic acid (PLA) fiber material for tick repellency.
In this research, acetone, chosen for its low toxicity and compatibility with natural acaricides, is utilized in a single-solvent system to produce nanofibers with long-lasting acaricidal properties. Successful electrospinning of acetone-based systems has been limited to needle electrospinning. Here, we present a method employing needleless electrospinning to fabricate ZnO nanoparticle-loaded PLA nanofibers by using pike-type electrode.
The PLA-ZnO solutions were characterized by density, conductivity, viscosity, and other parameters, while the resulting fiber mats underwent analysis via FTIR, SEM, and evaluation of thermal conductivity. Optimization of spinning parameters including critical voltage, collector distance, and environmental factors such as temperature and humidity was conducted.
Our study demonstrates the creation of PLA-ZnO fibers in a single solvent system through needleless electrospinning. Obtained membranes contain 1-3 wt% ZnO within an 8-10 wt% PLA matrix solution and exhibit heightened electrical conductivity. This advancement underscores the potential of ZnO in tick-repellent materials and strategies against tick-borne diseases.
SIMULATION AND OPTIMIZATION OF EQUIPMENT FOR UNLOADING LONG METAL BARS
Authors: Patic Paul Ciprian , Mantescu Gabriela
Published: December 2024

The dynamics of human society is directly related to the dependence on automation, and we can no longer produce almost anything without industrial automation. Automation is often associated with the industrial field, but automation has penetrated many areas of everyday life. Domains such as environmental protection, global trade, car, naval or rail traffic (increasingly intense), agriculture, construction and last but not least the medical field are some examples in which automation is present and in which they have a decisive role. This studied equipment is part of a technological flow to produce rectified and chromed bars intended to produce rods for hydraulic cylinders. Also, it can be used in two points of the manufacturing flow (translation for the rectification operation, or translation for the packaging operation) and has the role of moving the bars from one production line to another or from the chrome-plating operation to the packaging. The equipment was modelled virtually and checked for correct operation. During operation, there is sometimes a need for a mobile system of the equipment to be able to be positioned in various operating points, an operation that must be performed in the shortest possible time. This repositioning is ensured by a property called controllability. These positionings were performed through virtual simulations of the behaviour of the functional components of the equipment.
IMPACT OF COLLOIDAL PROPERTIES OF PHOSPHORUS-BASED NANOFERTILIZERS IN FOLIAR APPLICATION ON PRODUCTION PARAMETERS, PHYSIOLOGY, AND MINERAL NUTRIENT CONTENT OF SUNFLOWER
Authors: Kolencik Marek , Ernst David , Sebesta Martin , Straka Viktor , Durisova Luba
Published: December 2024

In contemporary agricultural practice, ensuring sufficient bioavailable macronutrients, particularly phosphorus, for plants in phosphorus-deficient soils remains a significant challenge. As a promising alternative, the application of phosphate-calcium-based nanofertilizers (NFs), with or without zinc, emerges as a suitable solution, offering targeted effects through foliar dispersion. However, current knowledge gaps persist regarding the development and colloidal properties of applied NFs and their impact on sunflower (Helianthus annuus L.), a globally significant oilseed crop known for its broad leaves and an intensive photosynthetic apparatus.
This study aimed to evaluate the physicochemical properties and colloidal characteristics of two phosphate fertilizers: nano-hydroxylapatite (n-HA) and a mixture of nano-calcium zinc phosphate and macro-sized parascholzite (nano/macro-CaZnP), compared to a NF-free control. The work focused on their effects on selected yield parameters and physiological responses, specifically examining changes of major mineral nutrients in sunflower leaves during the 2022 growing season in Nitra, Slovakia, Central Europe.
Result indicates that the treatment with nano/macro-CaZnP, produced via chemical route along with n-HA performed though biotechnological protocol, resulted in higher yield parameters in sunflowers compared to the NF-free control. Notably, the treatment with nano/macro-CaZnP exhibited higher yields, likely attributable to its favorable colloidal properties, including smaller hydrodynamic size, higher (positive) zeta potential (?-potential), or quantitatively higher content of ionically-soluble species during foliar deposition. This was statistically reflected via photochemical reflectance index (PRI), an important physiological indicator, for the particular treatment. Still, the unequal relative distribution of major macronutrients (N, P, K) of sunflower in leaves among the treatments poses a challenge to be overcome.
CHEMOMETRIC PROFILE OF WHITE AND RED WINES FROM DIFFERENT AREAS OF ROMANIA
Authors: Onache Petronela Anca , Florea Alina , Sumedrea Dorin Ioan , Tita Ovidiu
Published: December 2024

In this research, we studied wines from eleven wine regions of Romania (Stefanesti, Dragasani, Dealul Mare, Minis, Blaj, Babadag, Focsani, Tarnave, Silagiu, Iasi, Cotnari), but also for two years of different production (2019 and 2021), to observe their chemometric profile according to the geographical origin. The chemical composition was determined for 40 white wines and 34 red wines. The studied chemical parameters were alcohol concentration, wine density, total acidity, free and total sulfur dioxide, non-reducing dry extract, glucose and fructose, pH, organic acids (tartaric acid, malic and lactic) and macro-elements - calcium, potassium, copper, iron, nitrogen primary aminic and nitrogen ammonia. There are differences between the wine varieties on geographical areas, the alcoholic concentration has values ranging from 10.22-15.7% the lowest values are observed in white wines from the Iasi wine center, the total acidity has values ranging from 4.37-7.6 g/l tartaric acid, and the high values are found in the Blaj wine center for red varieties (Burgund - 7.11 g/l tartaric acid), but also to a specific variety Riesling de Rihn (9.25 g/l tartaric acid) from Dragasani vineyard. A good correlation is also observed between the geographical area and the pH. Principal component analysis (PCA) and related methods were used in order to achieve discrimination, classification and correlation of wines by geographical areas and varieties.
GLYCEROL-BASED FERMENTATION BY PLANT GROWTH PROMOTING ASPERGILLUS NIGER FOR ITS FURTHER FORMULATION AND APPLICATION IN TOMATO GROWTH
Authors: Vassilev Nikolay , Garrido Luis Garcia del Moral , Nunes Vanessa Martos , Labate Giuseppe Falvo D�Urso , Vassileva Maria
Published: December 2024

Sustainable crop production includes methods of growing food in a responsible manner avoiding application and dependence on chemically produced fertilizers and pesticides. The latter means development of approaches that lead to environmentally mild inputs based on the production-consumption-recycling principle. Biofertilizers are an important tool to achieve sustainable crop production. In this work, we report the results of experiments on growth and spore/mycelium production of plant growth promoting A. niger applying standard nutritional medium (potato-dextrose broth, PDB) enriched with 3% insoluble phosphate (20 to 200 mesh hydroxyapatite of animal-bone origin, HABO) and 0 to 80 g/L glycerol (a by-product of biodiesel production. Results showed the ability of A. niger to acidify the medium with the highest titratable acidity of 28.9 mmol/1 (at 5% of glycerol) and solubilize animal bone char under these conditions. As a second stage of the experimental work, the resulting final products were used to formulate gel-based inoculant. Both, the spores and mycelium produced during the fermentation process were further used as a base for formulation to make the biofertilizer production the key in the Sustainable Agriculture. Storage of the resulting products reported here was facilitated by the presence of glycerol in the formulation system.
RESEARCH ABOUT THE BEST SWEETENERS USED TO DESIGN A FOOD SUPPLEMENT WITH HIGH ANTIOXIDANT POTENTIAL
Authors: Butoi Constantin , Ionescu Alexandra Ioana
Published: December 2024

Food supplements with strong antioxidant potential are increasingly being used by consumers to maintain good health [1], [5], [6], [8], [9], [10], [11], [15]. The best food supplements use natural and organic raw materials and �Mild Food Processing� operations. This work paper presents a management technique for food additives (used, in this case, in the testing and selection of used sweeteners) in the design of a black tea-based food supplement. The raw material used was tested by A.A.S. (Atomic Absorption Spectroscopy) to check for the absence of contamination with residues or heavy metals [2], [3], [12], [13], [14]. For the determination of the influence of sweeteners on the basic chemical composition, it was used UV-VIS optical spectrometry and some elements of mathematical statistics. The obtained results from this step of the research led to the establishment of the best sweetening option for food supplement based on black tea. The obtained and selected product can be used (as raw material) in the following technological steps, showed a chemical composition close to the unsweetened version but it also had much improved sensory properties. The best sweetening variant in this case was determined depending on the minimal change on the basic chemical composition of black tea and the preservation of the basic sensory characteristics. The development of innovative methods and technologies for the management of food additives facilitates the production of high-quality end products with high levels of food safety.
STUDY OF PROPERTIES OF GLUCOSE OXIDASE IMMOBILIZED ON MODIFIED WITH CHITOSAN AND SODIUM TRIPOLYPHOSPHATE MAGNETITE
Authors: Matveeva Valentina , Tikhonov Boris , Lisichkin Daniil , Desai Ajay , Santos J.C.S.
Published: December 2024

A new biocatalyst based on glucose oxidase immobilized on Fe3O4 magnetite nanoparticles modified with chitosan and sodium tripolyphosphate was synthesized. Magnetite nanoparticles were obtained by mixing solutions of FeCl2 and FeCl3 with ammonia while heating to a temperature of 65 ?C. To stabilize the nanoparticles and ensure the presence of amino groups on their surface, chitosan and sodium tripolyphosphate were sequentially deposited on magnetite. Immobilization of glucose oxidase on the support was carried out after preliminary activation of the carboxyl groups of the enzyme by 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide. The activity and stability of the biocatalyst were investigated in the oxidation reaction of D-glucose to D-glucono-?-lactone. The immobilized biocatalyst was shown to retain more than 60% of the activity compared to the native form of the enzyme. The synthesized biocatalyst can be easily separated from the reaction mixture by a permanent magnet and reused without significant loss of activity. The optimal composition of the biocatalyst providing the maximum activity and operational stability was determined. It has been shown that the immobilization of glucose oxidase on modified magnetite leads to an expansion of the operating range of pH and temperatures by 15-20%, compared with the native enzyme. The successful modification of the magnetite with a fine layer of chitosan as well as the presence of target functional groups on the support surface were confirmed by the Fourier-transform infrared spectroscopy and low-temperature nitrogen adsorption.
SOLID RESIDUES FROM THE COBUSTION OF BIOMASS � HEAVY METALS CONTAMINATION AND POSSIBLE REUSE
Authors: Pavlikova Milena , Zaleska Martina , Nabelkova Jana , Pivak Adam , Pavlik Zbysek
Published: December 2024

This manuscript presents the comprehensive chemical and physical analysis of two types of biomass ashes derived from power and heat generation in order to highlight their positive parameters and properties and to propose the way for their safe reuse in the production of building materials. The analysis of biomass ashes included the assessment of chemical composition, dry matter content, loss on ignition, particle size distribution, Blaine fineness, dry powder density, specific density, pozzolanic activity, SEM morphology and microstructure. Emphasis was placed on the analysis of heavy metals content. The results of comprehensive physical and chemical tests proved the potential use of the investigated biomass ashes in the production of construction materials in the form of active component of blended binders or mineral fillers, while ensuring safe disposal of environmentally hazardous waste from energy production. Thus, it will be possible design and develop new eco-efficient materials with low carbon footprint enabling heavy metals stabilization and immobilization.
UNSTEADY STATE THERMAL ANALYSIS OF GLULAMINATED TIMBER ELEMENTS SUBJECTED TO FIRE
Authors: Erbasu Ruxandra , Teodorescu Ioana , Sabau Andrei , Tapusi Daniela
Published: December 2024

The paper presents the procedures of introducing the unsteady state numerical analysis domain for simulating the mechanical behavior of glue laminated timber (glulam) elements when subjected to high temperatures. For any analysis applied to characterize the fire resistance of wood, glue laminated timber implicitly, the unsteady state numerical analysis domain must be applied, considering the heat propagation, humidity percentage loss and the overall change of the mechanical characteristics of the components through a phenomenon that can be simulated as phase transformation. Behavior of glued laminated timber when subjected to fire is equally influenced by the behavior of adhesives in the cross section composition together with the wood lamellas. Even the focus of fire resistance analysis was on the characteristics and properties of wood, the type of adhesive is of great importance also. The current adhesives used, like phenolic or aminoplastic offer good mechanical properties and satisfactory results in terms of strength, durability or fire resistance, for which provisions and details are already included in standards. The paper studies the delamination when structural element is subjected to high temperatures with discussion if localized effects relate to sectional behavior.
This paper is based on the background offered by a research project aiming to develop a testing system for the mechanical behavior of some new configurations of glulam composite materials (comprising different wood essences and adhesives) when subjected to high temperatures.
The need for this type of analysis is becoming more topical due to the trend of replacing with bio-renewable materials (wood) structural elements from materials whose production is energy-intensive (especially steel and cement) within the framework of the European policy "Green New Deal" to reduce greenhouse gas emissions, of which the construction industry is responsible for approximately 40-50%.
INFLUENCE OF A FACADE BASED ON GABIONS AND PLANTS ON THE INDOOR AIR TEMPERATURE IN A TROPICAL CLIMATE OF THE AMAZON REGION
Authors: Balcazar- Arciniega Cristian , Roman-Vargas Patricio , Aguirre-Maldonado Eduardo , Valarezo-Jaramillo Sandra , Alvarado- Rodriguez Lorena
Published: December 2024

The present research evaluated a facade alternative to reduce the indoor temperature of buildings in the Ecuadorian Amazon (Yantzaza, Ecuador). Three scale models were compared: one with a gabion facade and leafy vegetables (onion, lettuce, basil, chamomile, and cabbage), one with a gabion facade only, and one with a clay brick (traditional) facade. Thermal data from inside the models were analyzed in March (warmest month) and January (coldest month). The results showed that between 13:00 and 15:00 in January and March 2021, the facade with plants reduced the indoor temperature up to 2�C more than the traditional facade. Cultivated facades increase thermal inertia without the need for additional materials or insulation, making it an environmentally beneficial solution. This research could be useful for designing cooler and more sustainable homes and buildings in hot climates.
NATURE A CONSTANT INSPIRATION FOR HUMAN BEINGS � AESTHETIC CHANGES IN ARCHITECTURE OVER THE CENTURIES
Authors: Kuhnert Ewa
Published: December 2024

Since the prehistoric times, humans have been exploiting the immediate environment for various purposes, from the adaptation of caves for shelter to the subsequent transformation of the landscape for their own needs and this continues to the present day. The bio-inspiration movement in architecture, including bionic, biomorphic, and biomimetic architecture, is linked to the dynamic technological development initiated by the Industrial Revolution and later by the Digital Revolution. Each of these has influenced the epoch-specific representation and perception of architectural forms. The aim of this paper is to provide a synthetic picture of the relationship between architecture and nature historically. This will provide a basis for further research in the field of biological architecture. The hypothesis of the article is that we can identify two principal design approaches in contemporary architecture: a technological approach and an organic approach, which on occasion intertwine, particularly in terms of process and technical solutions. The study uses an analysis of the literature on the history of architecture in the context of human-nature relations and contemporary architectural trends. The historical overview presented in the article will assist in conceptualising potential avenues of aesthetic evolution, while references to contemporary examples in the field of bio-inspiration will facilitate the characterisation of the trend in the shaping of architectural forms.
ANALYSIS OF GEOMAGNETIC DATABASES IMPACTING SPACE WEATHER
Authors: Asimopolos Laurentiu , Asimopolos Natalia-Silvia , Anca-Marina Vijdea , Luminita Dinu , Asimopolos Adrian-Aristide
Published: December 2024

Through the complex analysis of the geomagnetic database of the Surlari Geomagnetic Observatory for over 80 years, corroborated with the data of other planetary observatories from the INTERMAGNET network, we have extracted the geomagnetic information that is correlated with the specific physical parameters of space weather domain.
Space weather refers to the conditions and phenomena occurring in outer space that can influence the near-Earth space environment. This concept includes a variety of events and conditions that occur outside the Earth's atmosphere and can affect various aspects of space activities and technology. At the same time, we used the Romanian geomagnetic database, regarding declination, inclination and the total geomagnetic field, made in ArcGIS based on measurements in Romanian airports. Correlating the historical geomagnetic data of the observatory with the Solar Cycles and variations of the solar emission, with the spatiotemporal evolution of the composition, density, speed of the solar wind and ionospheric effects, provides a tool for forecasting climate change, space weather and for rapidly quantifying the possible effects of extreme geomagnetic storms in mid-latitudes. The periodic update of absolute declination values from the Airport Secular Variation Network with the help of global models, national reference values determined from observatory records and in situ measurements highlights the dynamics of national declination anomalies in real time and represented a tool for risk assessment in a strategic field � National Air Traffic Security.
In this paper, we present the Fourier and wavelet analysis of geomagnetic data recorded at different planetary observatories, regarding geomagnetic storms. Fourier analysis highlights the predominant frequencies of the magnetic field components. Wavelet analysis provides information about the frequency ranges of magnetic fields, which contain long time intervals for average frequency information and short time intervals for highlight frequencies, details of the analyzed signals. Also, wavelet analysis allows us to decompose geomagnetic signals into different waves. The presented analyzes are significant for the study of the geomagnetic storm. Data for the following days after the storm showed a weakening of the disturbances and a transition to quiet days of the geomagnetic field. In both, the Fourier Transform and the Wavelet Transform, the evaluation of the transform involves the calculation of a scalar product between the analyzed signal and a set of signals that form a certain basis in the vector space of finite energy signals.
At the same time, we present in this paper the realization of the web-GIS application for the magnetic declination measurements carried out by the Surlari Geomagnetic Observatory in the period 2010-2023.
SUSTAINABLE AEROSPACE PROPULSION: THE SPINLOOP ROTARY ACCELERATOR WITH MAGNETIC LEVITATION FOR LOW EARTH ORBIT VEHICLE DEPLOYMENT
Authors: Mamczura Piotr , Pekala Dawid
Published: December 2024

The main goal of this work is to present the SpinLoop Rotational Accelerator project as a preliminary module for accelerating space rockets destined for low Earth orbit. By uti-lizing magnetic levitation technology, which is also used in modern high-speed rail sys-tems (including the thriving Hyperloop technology), it will be possible to design a device that imparts high velocity to the rocket immediately upon launch. This would reduce the amount of fuel the spacecraft would need, thereby decreasing its dimensions and con-struction costs. During the acceleration phase, the rocket would be positioned on a special platform that moves along a magnetic track. This platform would be responsible for bear-ing the load resulting from the rocket�s mass and the centrifugal forces generated during acceleration. The platform itself would be attached to an arm mounted on a shaft, which would receive torque from the propulsion system equipped with an appropriately selected gearbox and an electric motor. The entire setup would be placed within a vacuum cham-ber tilted relative to the horizontal plane, minimizing air resistance and significantly re-ducing power requirements. Once the desired rotational speed is achieved (and the result-ing linear velocity), the platform would detach from the arm and transition from the cir-cular track to a straight track. After stabilizing the trajectory, the rocket would separate from the platform upon exiting the tube, utilizing the imparted velocity to pass through the thickest atmospheric layers. Finally, in the later stages of the flight, rocket engines would be activated to place the vehicle into the desired orbit. This project holds great promise for reducing the costs of launching payloads into near-space and could revolu-tionize space transportation.
EDUCAÇÃO PERMANENTE EM SAÚDE: DESAFIOS E ESTRATÉGIAS PARA SUA IMPLEMENTAÇÃO EM INSTITUIÇÕES DE SAÚDE
Authors: Silva Bianca Martricia de Oliveira , Tavares Sandra dos Santos , Franco Dheyme Eveline Silveira , Pinotti Rafael Ferreira , Rocha Claudia Aparecida Godoy
Published: December 2024

Introdução: A Educação Permanente em Saúde (EPS) é definida como processo de aprendizagem-trabalho onde o aprender e o ensinar se agrupam no cotidiano das organizações, fortalecendo a construção de espaços coletivos de reflexão, autogestão e mudança institucional. Objetivo: Analisar os desafios e barreiras na implementação da Educação Permanente em Saúde (EPS) e sua importância no desenvolvimento profissional e na melhoria da qualidade assistencial. Metodologia: Utilizou-se a Revisão Integrativa da Literatura. A seleção dos estudos foi realizada nas bases de dados SciELO, LILACS E PUBMED, considerando publicações dos últimos cinco anos; a amostra final foi composta por 13 estudos. Resultados: Emergiram duas categorias temáticas: Desafios e Barreiras na Implementação da Educação Permanente em Saúde e a Importância da Educação Permanente em Saúde (EPS) na Melhoria da Qualidade Assistencial e no Desenvolvimento Profissional. Considerações finais: A Educação Permanente em Saúde é crucial para melhorar a qualidade do atendimento e o desenvolvimento profissional, exigindo comprometimento institucional para superar barreiras como falta de apoio e recursos adequados.
Stereometry specification of damaged working surfaces of the Cu-ETP copper guide
Authors: Konieczny J. , Labisz K. , Wieczorek J. , Adamiak M. , Ćwiek J.
Published: December 2024

The paper presents the results of the stereometry specification of the damaged guide of a section insulator of railway electric traction made of hard electrolytic copper Cu-ETP. The tested guides were withdrawn from service due to damage.The tests were carried out on guides that were operated for 6 or 12 months on lines where trains moved at a maximum speed of 40 or 120 km/h.The analysis of the geometry of the surface was based on data acquired by measuring selected fragments of guides and executing them on a laser profile measurement gauge MicroProf of the FRT company. The microstructure analysis was performed on the ZEISS SUPRA 25 Scanning Electron Microscope (SEM) using the EDS.Analysis of the test results showed that the electric arc is the most destructive phenomenon that accompanies the operation of the guides of section insulators made of Cu-ETP copper. The stereometric tests have characterised the guide surfaces using specific values, e.g., copper drop height or abrasion depth.Since the tests were carried out on guides operated on the railway electrical traction, in real conditions, it is very difficult to acquire data on operating parameters such as voltage and electric current, the pressure force of the pantograph on the electric traction, the temperature to which the guide heats up as a result of an electric discharge or under the influence of flowing air, high current, etc.The most important mechanisms destroying the guide made of Cu-ETP copper have been characterised, and thanks to this, in the next stage of research, it will be possible to counteract the effects of damage effectively.The presented test results concern guides operated in real conditions and show the effects of the electric arc and the accompanying physical phenomena. The test results are not the result of laboratory simulations intended to reflect real operating conditions.
The Use of Wargames in the Development of Decision-Making Skills
Authors: Makowiec Paweł
Published: December 2024

This article attempts to discuss the use of wargames as a tool for shaping decision-making skills in the tactical training of commissioned and non-commissioned officers. The use of games duringtraining activities, due to active participation and utilisation of various methods and techniques, provides a wide range of opportunities to train and improve the skills of personnel with respect tocommand process, decision-making, management as well as application of tactics, techniques and procedures at various levels. In the author’s opinion, the use of tactical decision games and matrix decision games, whose structure and course are discussed in the article, plays a particularly important role in the training process.
AVALIAÇÃO DO DÉFICIT DA VACINA CONTRA O HPV PÓS-COVID-19
Authors: Macedo Ana Beatriz Gonçalves , Matta Gabriela Godinho da , Figueiredo João Renato Loureiro , Rezende Gabriel de Oliveira
Published: December 2024

Introdução: O HPV (Papiloma Vírus Humano) é um dos mais frequentes em todo o mundo, sendo relacionado com o câncer de colo de útero em mulheres, como também a tumores em homens e mulheres. A pandemia de COVID-19 impactou significativamente as campanhas de vacinação contra o HPV, resultando em uma queda na cobertura vacinal e em uma falta de informações disponíveis para a população.Objetivo: O principal objetivo foi avaliar a conscientização da população em relação à vacina contra o HPV e entender as lacunas nas campanhas de imunização pós Covid-19. Metodologia: Foram realizadas análises de informações coletadas nas mais recentes iniciativas de imunização contra o HPV após o período pós-pandemia de COVID-19, junto de um questionário com crianças de 13 a 15 anos executado em uma escola em Manaus, AM. A pesquisa buscou entender o nível de conhecimento dos jovens sobre a vacina e identificar possíveis déficits nas campanhas de vacinação. Conclusão: Os resultados indicaram uma clara carência de informação entre a população, especialmente entre crianças e adolescentes. A intervenção é crucial para aumentar a cobertura vacinal e, consequentemente, reduzir a incidência de cânceres associados ao vírus.