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The article aims to design optimized synergistic structures between additive materials from the category of industrial by-products, by applying experimental modeling, in order to achieve increase of performance parameters for the final products, in line with the needs of the building materials market and challenges to develop lower-carbon alternatives for reducing the climate impacts of the built environment. The experimental applications based on the integration of industrial by-products will results in defining ...

High concentrations of atmospheric carbon dioxide (CO2) today led to the development of carbon capture and storage (CCS) technology, which is based on the concept of mineral carbonation in peridotites, enabling CO2 sequestration. In the Philippines, several opportunities for CCS in ophiolites and associated springs are yet to be studied. Therefore, this paper examined the geochemistry of alkaline springs and ultramafic to mafic rocks in Botolan, Zambales and determined its significance to carbon sequestration. Res...

A constantly growing demand for fossil fuels in the world and its contribution to climate changes is putting intense pressure on various energy consumers in different industries. Thus, agricultural producers come under close scrutiny and face a difficult challenge of switching to a sustainable mode of production that would ameliorate detrimental effects on greenhouse gas emissions. This study aims to fill the gap in the literature and contribute to the current body of knowledge by analyzing the consumption of ener...

The paper contains the results of experimental research on the elaboration of the composition and optimization of the properties of the self-levelling screed based on cement and sand, intended for the fulfilment of the intermediate layer of floors, including industrial enterprises with the aggressive environment; sedentary parts of tanks, basins; bunkers; different containers, etc. The reinforced self-levelling screed has an absolutely horizontal surface. It allows the application of finished layers of composite p...

To reach autonomous control with good performance in shearer operated longwall mines, control algorithms have to be adapted to the system behaviour. Thus, one of the challenging tasks in this area is the identification of the behaviour, which is declared as complex and specific to each mining area. Therefore, it is necessary to determine a suitable model that reproduces the cut behaviour of a shearer loader and can be adapted to a real mining system. This paper shows and analyses possible model structures to predi...

Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosion that has to be minimized in order to ensure life safety and health of workers and to prevent damaging of property and the environment, as well as free movement of goods when they meet the essential safety requirements at European level. Electrical equipment that operates in potentially explosive atmosphere, have characteristics specially designed for operation in this area...

Since ancient times, mankind has tried to establish a causality of the phenomena that occur in the surrounding world, to find solutions and answers. Floods are widespread in the Danube Delta they cause great material damage and loss of human life and important consequences. The production of floods in the Danube Delta is due to the entry into the Danube of large amounts of water from rains, from the sudden melting of snow and mountain glaciers, as well as from underground water sheets. Deforestation favors the rap...

Geopark networks are expanding globally, with the main purpose to protect geoheritage. In many places of the world geopark sites are associated with local cultural heritage and indigenous people. These links sometimes are synergistic, whereby geoparks serve as important protected areas that allow for preservation of important cultural objects and even support livelihoods of indigenous people. However, in some cases geopark development is perceived negatively by local communities and might have potentially damaging...

Tailings in Kosovo as in any other country in the world look like an asset and mineral resources, but despite this, these Tailings have a very large impact on the process of environmental pollution. In addition to the chemical and mineralogical research of the Artana Art-1 Tailings, we have conducted research on the geostatistical distribution of most pollutants and chemical elements of this tailing. The flotation process of the Artana mine builds tailing Art-1 and the waste released from this process is dumped in...

By elaborating this article, the authors wanted to present the situation of expenses incurred performed for the protection of the environment from Romania. The authors try to underline the fact that they have improved in recent years, against the background of the increase of the available funds, due to the economic growth and implicitly the revenues from state budget. A priority under all aspects must be the protection of the environment and those ways of protecting the Earth's resources for the following generat...

The Cultural Heritage Act regulates the preservation and protection of the cultural heritage of the Republic of Bulgaria, and the State ensures the protection of cultural heritage regardless of its location. The procedure for identifying, declaring and granting the status of sites as immovable cultural property, as well as the procedure for establishing temporary protection regimes for declared immovable cultural heritage sites and for the protection regimes for immovable cultural property, are also laid down in s...

Waste Water Treatment Plant (WWTP) belong to the so-called -critical infrastructure-, which are so essential that their continued operation is required to ensure the security of a people. Energy is the most important operating utilities of WWTP. The specific electric energy consumption of WWTP depending on many factors including the inflow quality, WWTP-s scale, the technology used and climate. High energy consumption indirectly produces ecological damage, accelerates the energy crisis, and increases carbon emissi...

A small amount of flammable gas mixed with dust can cause a large explosion with serious consequences. In this study, explosion tests of hybrid mixtures were performed in an explosion chamber with a volume of 0.02 m3. Spitzer et al. (2023) presented the first ever test of hybrid mixtures with methane as the gas component and a specific cornstarch as the dust sample, investigating the practicality of the whole procedure, the dispersion of the results and the variation between the test apparatuses. The research ment...

Rock typing is an essential tool for reservoir characterization and management in the petroleum industry. It is the process of grouping portions of a rock sample based on their physical and chemical properties. This process is currently done by experts in the industry, which consumes valuable industry resources. Precise and efficient rock typing can build accurate geological models, optimize exploration and production strategies, and reduce exploration and production risks. This work proposes a deep learning metho...

Climate factors are already exerting negative pressure on water resources, society and ecosystems. The analysis of trends and identification of vulnerable water supply areas is related to the River Basin Management Plans. For this end, a methodology for assessment of water resources vulnerability, developed in international projects of the National Institute of Meteorology and Hydrology (NIMH), is adapted. The methodology is further developed by drought risk assessment. The main stages are: 1) Assessment of the cl...

An ambitious reduction in greenhouse gas emissions is set by the political initiative -The European Green Deal- and -Fit for 55- package. The municipalities, which carry out the strategic management of the district heating systems, will have to ensure the sustainable development of the territory in a way that includes a significant increase in energy efficiency both in the building stock and in the related district heating system. The aim of this research is to study and develop an easy-to-use methodology and an a...

Materials and technical equipment, especially their external parts, are inherently subjected to the electrification process during their use. The electrification process of the materials and external parts of the equipment, especially the non-conductive ones, is responsible for the generation, through specific mechanisms, of significant amounts of electrostatic charges. The electrostatic charges generated as a result of the electrification process on the materials and external parts of the technical equipment used...

Security planning and disaster management are critical areas of focus in Bulgaria, given the country's vulnerability to various natural and man-made disasters, including earthquakes. Bulgaria has established an emergency management system for disaster preparedness, response, and recovery. This system includes various government agencies, non-governmental organizations, and volunteers who work together to ensure an effective response to disasters. The Bulgarian government and the science community conduct risk asse...

Strategic management and management in general as well as the form of behavioral management of post-mining landscapes is a very important question of how to meaningfully use brownfields that will arise after the end of fossil fuel extraction. The authors of the presented article focused on these revitalization areas in the form of project management from the perspective of strategies for suitable locations. These localities are very important for the further development of the area, and related to this are the pos...

The purpose of this paper is to study the effects and risks of climate change in Romania. The research methodology used is based on the analysis and synthesis of information from the climate change literature. The main research method used in the paper is content analysis. The authors of the paper find that climate change is already having many negative consequences on health, environmental and economic issues in Romania, affecting all regions. The importance of publishing this study is to increase and improve the...

A mathematical model was developed, which is based on a multivariate regression dependence and establishes the relationship between the critical pitting temperature (CPT) of the 06KhN28MDT alloy (similar to AISI 904L steel) and its chemical composition and structural components in model circulating waters with pH 4...8 and chloride concentration from 350 up to 600 mg/liter, which correspond to industrial circulating water during the operation of heat exchangers. Based on the results of the analysis of the develope...

The problem of the ecological system long-term keeping near the equilibrium position with minimization of control resources is considered. A mathematical formulation of this problem and a method for optimal expenditure control constructing are presented. While deviations from the equilibrium point are very small, its controlled dynamics can be described by linear differential equations with constant coefficients. The control actions are modeled by piecewise-constant unidirectional functions with a finite number of...

Biochar is a highly porous pyrolysis product with a high specific surface area and adsorption properties, capable of adsorbing various compounds and formations, including ARG-containing MGEs. To assess the ability of biochar to adsorb MGE, a model experiment was carried out: in sterill flasks, the microbial community isolated from composts was cultivated on LB-medium, oxytetracycline and a mixture of heavy metals were added as factors potentially stimulating the production of MGE. Neither heavy metals nor oxytetra...

The influence of the ultrasound on corrosion resistance of chromium-dioxide silicon nano-composition electrolytic coatings (nano-CEC) in solutions of the different concentrations of nano-particles of silicon dioxide at temperatures 293, 303, 313 K has been investigated. The research showed that the electroplating of chromium-dioxide silicon nano-CEC on steel St.3 enlarges its corrosion resistance tenfold. The least corrosion resistance has nano-CEC, which got under constant ultrasound influence, and the most - whi...

The paper presents a synthesis of the results of the GoldenEye project type H2020 No. 869398 regarding the state of the Cuibarul waste dump of the Rosia Poieni Open Pit in Romania, its chemical and mechanical stability which jeopardizes the surrounding environment. During the project, the factors that influence the stability of the dump were followed, such as: -dumping technology; the geological, hydrogeological and hydrological conditions of the location; the geomorphological conditions of the dump site, the phys...

Habitat fragmentation is a significant threat to biodiversity conservation and the establishment of protected areas has been proposed as one of the main strategies for mitigating its impacts. Romania has established numerous Natura 2000 sites to protect habitats and species of European importance, but their effectiveness remains unclear. In Romania, the Natura 2000 network was established in 2007. This study aims to evaluate the effectiveness of Sites of Community Importance (SCI), part of Natura 2000 network in R...

The result of determining the quantitative relationship between the temperature and humidity of enrichment waste materials based on the analysis of digital photographs of laboratory experiments using RGB and Lab methods is presented. Using standard equipment, a laboratory experiment was performed to determine the temperature and humidity of samples of the tailing dam surface layer. Digital photographs of the samples were taken in natural light. The images were processed on a computer to obtain the components value...

The Dniprovsko-Buzky liman is a semi-enclosed water body located in the lower part of the mouth area (estuary) of the Dnipro and the Pivdennyy Bug. The studied liman is located within a tectonic depression that is characterized by asymmetric slopes. The northern slope of the depression is steeper and characterized by a predominance of positive tectonic movements. The southern slope is very gentle, and negative tectonic movements take place within it. The specified tectonic conditions determine the lithological, mo...

The main scientific problem to which the study is devoted is to determine the relationship between such aspects of the quality of life of the population as: environmental quality, economic inequality and digitalization of households. The relationship between the three studied areas of household life is dictated by the processes of digital transformation, the formation of a green economy, while the phenomena of population differentiation by income is increasing. Nonparametric correlation coefficients were calculate...

In 2019, the Green Cities submitted the first proposal for the Green Norm. The Green Norm is a set of practical recommendations mainly for politicians, officials and urban development officials. Green cities introduce this norm as a critical strategy for competitiveness. More and more people are moving to big cities, so we must consider climate-neutral solutions as the municipalities set an example. The number of green and climate-neutral towns in Europe and Latvia has constantly been increasing over the last deca...

A common practice under modern conditions in urban planning is the tendency of urban areas to grow, which is usually at the expense of agricultural areas. This, both in a global aspect and specifically for Bulgaria, is a particularly relevant problem due to the extremely important ecosystem functions of soil resources and the fact that they are an extremely slowly renewable natural resource. The assessment of ecosystems condition and their services is a suitable approach as an additional study on the effects of ch...

Many international, European, regional, and national organizations are active in spatial data collection and analysis. Their activities for spatial data management as well as the implementation of geoportals outline the need for harmonization of the infrastructures with existing data in different areas and in the forestry. The forests spatial data in Bulgaria are part of various information systems, specialized projects, and active national portals. The information process is characterized by rapid technological p...

The purpose of this research is to create a new paradigm as a scientific base for national programs for gas hydrate R&D and projects for technology development and gas hydrate exploitation. The main tasks are the results to mitigate climate and energy crises and to avoid technology problems of renewable energetics and social problems from mass jobs changes in energy and related sectors. The methodology includes analyses and examples from unsuccessful national programs and production tests and a thermodynamic appro...

The paper presents a detailed review of ore and alluvial gold mineral raw material base of North East of Yakutia and estimates the economic efficiency of development of gold deposits not involved in the exploitation. Research methods: analysis and comparison, qualitative and quantitative features of the mineral raw material base of Yakutia, formed and replenished databases on a number of deposits of the region; methods of analogy, economic-statistical, methods of system analysis and decision support, evaluation of...

In order to reduce the impact of agricultural activity on global warming and promote sustainable land management, it is necessary to implement management practices that reduce GHG emissions from agriculture. Conventional soil tillage produces favorable conditions for the growth of seeds and plants, but it is an energy and labor-intensive method that alters the soil to an unfavorable condition, while reduced soil tillage decrease the use of energy resources, GHG emissions from the soils, and improves the soil quali...

One of the main lines of research on the impact of climate change is the study of drought and its effects on agricultural production. The aim of this study is to determine the key parameter of plant expression in relation to water stress and soil hydrophysical properties, thereby more accurately determining the need for real-time soil profile water enhancement. The research was conducted from 2019 to 2021 at the Nove Zamky experimental site, with research on royal walnut (Juglans regia L.) During the study, we clo...

Research Object and Relevance. The main components of the strain tensor and their accuracy assessment are the research objects in this work. When conducting monitoring using geodetic methods, it is usually not enough to determine only the displacements of reference points; it is also necessary to determine the presence and magnitude of deformations. This task is directly related to the accuracy assessment of such characteristics as principal strains, dilatation, shear strains, and rotation. Research Methods. In co...

The research on the development of new robot control systems is currently underway. The interest in this area stems from the need for practical, user-friendly means of transport adapted to people with physical disabilities. The application of these devices will allow disabled people to manipulate external devices using EEG of both brain activity and eye movement. It is still possible for people with disabilities to partially apply their gaze in order to control and communicate with an assistive device. However, th...

The purpose of the paper was to assess the rheological properties of some kinds of sausages from the local market. Three different kinds of sausages were chosen: Cabanos (CS), Peasant (PS) and Grill (GS). In order to analyze the viscoelastic characteristics stress relaxation tests were run on the above food at the room temperature. With the "Origin" program, the graphic part was made, obtaining for each three compression curves. From these curves were calculated the compression module (or elasticity module or Youn...

The paper aims to investigate biopolymeric wastes that combine the quality of the raw material with the desired application to obtain carbon materials. The raw materials used to obtain products for environmental application must have a low ash content and a quality as uniform as possible. Depending on the requirements of the target products used for depollution purposes, the quality characteristics of the precursors are presented: biopolymeric waste - fruit kernels/shells of peach, olive, and walnut shells, wastes...

This paper refers on the result of an experimental work developed at an Italian limestone quarry. In such a site the pollutant emissions connected with standard activities such as drilling, blasting or crushing materials represent primary dust sources and contribute to determine the PM10 concentration all over the quarry plant and the surrounding area. Moreover many studies underlined the important contribution of secondary sources in the assessment of airborne dust climate. These ones, generally constituted by st...

Climatic variability from year to year and even within the same growing season has a significant impact on the composition of the grapes and the resulting wines. This study covered several vineyards along a 400-km route in western Romania to empirically describe the influence of climate on berry concentration in titratable acidity (TA), pH and anthocyanins of two wine varieties (Cabernet Sauvignon and Sauvignon Blanc) during 2021-2022 growing seasons. The results showed that at a sugar level of 23o Brix total solu...

The article deals with the information technology development for monitoring and visualization of the load of urban environment public open spaces and human behaviour. The problem of urban public open space load became actual both in everyday life and in the conditions of pandemics. The offered information technology includes several dynamic or real-time data acquisition modules, data server with data processing, clustering and simulation functions and mobile application for end users on their mobile devices. A mo...

High-Entropy Alloys (HEAs) have higher mixing entropy than the conventional alloys and intermetallic compounds and form the stabile solid solutions with disordered structure. They exhibit unique and special properties, in particular high hardness, wearresistance, significantly high strength, structural stability, good corrosion, and oxidation-resistance. HEAs -exotic-, core effects are followings: high configurational entropy; sluggish diffusion; lattice distortion and cocktail effect. At the current stage, the vo...

Since ancient times, chromium oxide was used 2000 years ago by the Chinese to cover the tips of weapons and later, as late as 1988, hexavalent chromium was discovered to be dangerous to humans. Currently, many companies carry out chrome plating of plastic parts, which consists in creating a superficial layer of diffusion, of an iron-chromium alloy with up to 10 - 20% chromium. Coating by electrolytic deposition is the most widely used method for creating protective layers for plastic materials and consists in elec...

This article presents a study focused on animal activity recognition using a combination of IoT devices and signal processing techniques. The study involves collecting data from IoT devices placed on the cow's neck, which are equipped with an accelerometer and gyroscope, along with a synchronized video camera. The objective is to accurately recognize and classify four key activities exhibited by the cow. To prepare the collected signals for analysis, various signal processing techniques are applied. This includes ...

Agri-fodder value, i.e., the diversity of floristic composition of communal pastures in Romania is strongly affected by impropper management practiced for the last three decades. Most permanent grassland areas are excessively grazed in addition to the effect of climate change on the multiplication and development of plant species making up the grassy cover. Communal pastures are the most important source of feed for animal growers in the territorial administrative units (TAUs) of the Timis County. Their current st...

Since putting in operation of Chernomorets fishing port (Sozopol municipality, southern Bulgarian Black Sea coast) in January 2016, a number of negative effects have been observed in the area. The disturbance in the existing hydrodynamic balance led to intense coastal erosion and unwanted sand accumulation in the wave shadow area. Additionally, the coastal water quality has deteriorated in the port area. In order to undertake measures to mitigate the observed adverse effects, it is necessary to assess in detail th...

The work is devoted to increasing the service life of PDC bits when drilling rocks alternating in hardness by equipping tools with additional superhard elements. Experimental data have shown (ISM NAS (Ukraine)) that superhard elements have the following composition: diamond, tungsten carbide, cobalt, chromium diboride and zirconium dioxide, and the latter two components are included in the composite in a ratio of 2:4. Inserts made of a new composite have minimal cracking, increased wear resistance and cutting abil...

The field of construction is currently one of the most stable and active fields of activity. It presents complex activities that are done in phase and chronologically until the end of completion execution stage. Realization of the foundation or its characteristic elements it includes a number of preparatory activities such as: land preparation and release of various tasks, shoveling and ground consolidation. The type of consolidation it is chosen according to the depth of the escape and It is about choosing a supp...