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The article describes commonly used imaging techniques for monitoring solar farms using drones, highlighting the advantages of each method and the benefits of precise flight path planning. Thermal imaging is discussed for its ability to detect temperature variations and identify potential issues like cell degradation and electrical failures without physical inspection. High-resolution imaging provides detailed visual inspections to identify physical damages, dirt accumulation, and shading issues, enhancing mainten...

Mining activities are carried out employing a variety of machineries and equipment; in many cases these can generate relevant health problems for workers. One of the biggest hazards for workers is noise, since prolonged exposure to a noise source could cause damage through long-term exposure. Various researchers pointed out that the damage that can be generated by exposure to noise is of various types with sometimes very serious consequences. Specially drivers of particular vehicles of the mining sector, such as d...

Regardless of its type and size, any organization is faced with risks that can affect the achievement of its objectives in terms of activities, strategic initiatives, operations, processes and projects, with different consequences on strategic, operational, financial results and image and reputation. All activities of an organization involve risks, and risk management is the process of substantiating the decision, by taking into account the effects of uncertainty on the materialization of objectives and determinin...

In light of the pressing need to achieve climate neutrality in the energy sector, the European Union seeks to identify strategies that will enhance and diversify its green energy supplies. As a renewable energy source, green hydrogen promises to offer a viable alternative to fossil fuels where green electricity may be insufficient or inaccessible. This is why the production and supply of this innovative energy carrier is becoming a significant focus in EU politics and research. This article examines and compares p...

Hydrogen-based energy production involves the use of fuel cells or the direct combustion of hydrogen (a particular case being hydrogen combustion in internal combustion engines). Direct hydrogen combustion is still in the testing phase, with challenges arising from its energetic properties, which continue to be a difficult factor. For instance, hydrogen has a low calorific value (about three times lower than methane) in its gaseous phase, which is the phase where combustion occurs, a very high combustion speed (ab...

In isolated areas without access to the grid where it is necessary to operate certain equipment, such as the operation of a valve in a mining area or some gates on a irrigation canals, an installation with fotovoltaic supply can be used. Considering the intermittent operation regime of the driven equipment, a solar-powered drive installation can be designed, and by storing the energy in a battery, operation can be ensured during the night as well. Thus, the PV power system must be sized (PV peak power, battery and...

Hydrogen, known for its high flammability and potential explosive characteristics, presents significant challenges in safety engineering, particularly in enclosed spaces where explosions can lead to catastrophic consequences. This paper presents the results of physical experiments conducted to investigate the linear propagation of hydrogen explosions within confined environments. The experiments were designed to simulate real-world scenarios and assess the factors influencing the extent and characteristics of expl...

In the evaluation activity of technical equipment intended to be used in potentially explosive atmospheres, by national and international legislation, non-compliant aspects were often reported regarding the choice, installation and maintenance of this explosion-proof equipment. The following main aspects were pointed out: the equipment that was initially chosen and installed appropriately for the specific application but later, over time, improperly maintained; respectively, the situation in which they were inappr...

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 Spectr...

Whey is a significant environmental contaminant since its waste load is estimated to be 100-175 times more than that of an equivalent volume of household wastewater. It is estimated that around half of the whey produced is used for human or animal use, and the other half is released into the environment as waste water, which adds to pollution. Thus, in accordance with the guidelines established by the EU Green Deal Program, its valorisation through the development of health-promoting products is an important step ...

Based on the principles of prevention, the employer must seek to eliminate risk at source and, in order of priority, to replace hazards through non-dangers, to separate or isolate areas where there are hazards, ensuring adequate collective and individual protection. However, workers from high and very high voltage power substations continue to be exposed to occupational hazards, suffering accidents at work and occupational diseases with significant repercussions on their health, on colleagues or National Power Sys...

In this work, a rock fall assessment was carried out in two distinct areas in southwest Angola. One is located next to Chapel of Nossa Senhora do Monte in the urban area of Lubango. The other area is located on the road between the city of Lubango and the tourist area of Tundavala. The rock mass of the first area belongs to the Tundavala Formation of the Chela Group and consists of quartzitic-sandstone with a sub-horizontal bedding attitude. The rock mass in the second area is composed of quartzitic-sandstone and ...

In the period 2010-2022, Romania has seen a continuous increase in the share of renewable energy in gross final energy consumption, promoting and using green energy sources. In 2019, more than 24% of energy consumption came from renewable energy, ranking 10th in the EU, surpassing the European average, and by 2030, Romania aims to reach a share of 49.4% renewable energy in gross final consumption of electricity. In this perspective, climate change is the most discussed topic, and from the analysis of CO2 emissions...

The roughness of a ship-s hull can have a significant impact on the environment, primarily through its effect on the ship-s fuel consumption and, consequently, carbon emissions. The resistance a ship encounters as it moves through the water can be broadly categorized into two main types: frictional resistance and wave-making resistance. Hull roughness increases frictional resistance, also known as skin friction resistance. This resistence component is a major aspect of the total resistance of a merchant ship, lead...

Nanotechnology plays a crucial role in the development of innovative products, yet public apprehension regarding its potential risks remains a significant barrier to its acceptance. This study investigates the knowledge, attitudes, and fears associated with nanomaterials among university students in the Czech Republic, aiming to inform policy formulation that aligns with public interests. Focusing on this demographic is essential, as university students are poised to influence future public discourse and innovatio...

On the territory of Romania, there are large salt deposits grouped on either side of the Carpathian mountains. Made up of over 300 large salt deposits covering an area of about 30,000 km2. The Trotus mine within the Targu Ocna Saltworks Branch was opened and put into operation in 1971, with the objective of dry salt exploitation, using the mining method with small chambers and abandoned square pillars, with a vaulted ceiling. Currently, Salina Trotu? has 14 horizons: 2 at the level of the Pilot mine and 12 at the ...

The paper presents the results of research undertaken in 2023, in the perimeter of the Stationary for the Study of Soil Erosion located on the left side of the Slanic Hydrographic Basin in Buzau county, with a slope of 15-20 %. Within the station are located 12 plots for the control of soil surface erosion cultivated differently. The amount of soil washed away by torrential rains during the growing season was different depending on the degree of soil cover given by agricultural crops [11] . From the plot cultivate...

The type of protection flameproof enclosure consists in placing the parts that can ignite an explosive atmosphere into an enclosure that can withstand an internal explosion and it prevents the transmission of the explosion effects (hot gases, flames, incandescent particles etc.) capable of ignition to the external explosive atmosphere in which the equipment is placed. The purpose of the paper is to underline some specific situations that can occur during the tests in explosive mixtures needed to verify the charact...

Hybrid electricity storage systems are becoming essential for efficiently managing renewable energy sources and enhancing the stability of power grids. As the adoption of renewables expands, these systems are crucial for balancing supply and demand, mitigating intermittency issues, and ensuring grid reliability. This paper offers an in-depth review of different system configurations used in hybrid storage systems, emphasizing the significance of understanding and optimizing their intricate designs. Recent technolo...

The core insulators of vacuum insulation panels are mostly made from inorganic raw materials with a high SiO2 content, either in the form of nanoparticles or microfibers, while the proportion of organics is usually up to 3 %. The contribution is devoted to the study of reaction to fire in hybrid insulation materials made from a combination of nano SiO2-based particulate raw materials and organic-based fibrous raw materials, where the total proportion of organics is significantly greater than 3 %. Considering that ...

Green tea-based food supplements are very attractive to a large group of consumers and make an important contribution to maintaining good health. In order to preserve the nutritional value of supplements of this type, pesticide and plant growth hormones-free green tea is used as raw material. Choosing the best sweeteners in this case is an important part of scientific research, especially for consumers with certain digestive conditions. The aim of this paper is to successfully identify the best way to sweeten gree...

Chile is one of the largest copper producers in the world, which implies a significant generation of waste, particularly copper slag (CS). On the other hand, the high demand for concrete mixes generates a high consumption of natural aggregates as sand. However, specialized literature indicates that the fine aggregate can be partially replaced by CS keeping (or improving) the concrete properties. Then, this paper presents a sustainability analysis of the partial replacement of fine aggregate of concrete by CS. The ...

According to the Global Sustainable Development Report 2023, achieving many SDGs is becoming increasingly difficult. In conditions of turbulence and ongoing challenges for the society, increasing attention is being paid to ensuring technological sovereignty of regions and countries. Countries with advanced technologies have advantages, among which energy supply technologies occupy a special place. The type and quality of energy sources is of particular importance. The energy complex and its resource supply, as wel...

The SWOT analysis of the energy resources of hydrocarbons comes in the context in which the possibility of a black-out is very likely, and the lack of energy resources can cause major damage through enormous financial losses, which through the domino effect can spread economic and national insecurity. In this context, the SWOT analysis energy resources become an essential issue of national security and makes this paper of real interest. The authors consider that the security supply with energy resources of hydroca...

In the last decade, at the global level, most countries have emphasized the reduction of energy consumption produced with the help of solid fuels, trying to reduce the volume of greenhouse gases and polluting gases by identifying new sources and methods of energy production that have a low effect on the environment and people. Romania is preparing to ensure energy security by producing electricity from renewable sources. Romania's medium- and long-term strategy will be influenced by the European Green Pact, which ...

In the context of global climate change, groundwater is not only a vital source for human survival, but also a strategic resource for the sustainable development of local and global economies. The protection and effective management of these resources must be top priorities for everyone involved in environmental planning and management. The purpose of this work is to monitor the quality of groundwater from two water drillings located in the south of Timisoara and four water drillings in the west of the locality. T...

Climate change is not the future, it is a hard, tangible and uncompromising present. Globally, the risk of crop reduction is increasing. Production shocks that used to occur once every 100 years or so in the past may occur every 30 years or more in the future. The development of fruit growing, as part of agricultural activities in the countryside, must record the impacts caused by climate change and apply the species structure of fruit trees in the regions of Slovakia, which will fully respect the biological requi...

This paper outlines the methodology of a technical due diligence preparation for the reconsolidation process of an abandoned building. The structure highlighted in this paper is an existing but incomplete building that has been abandoned for more than over a decade. For this study a technical due diligence was performed to assess the current condition of the asset presented on the next chapters of this paper. A technical due diligence represent the research and analysis discovery process which helps to collect ess...

In deltaic environments like the Danube Delta, sedimentary particles can range from clay and silt to sand and gravel. The proximity to the Black Sea introduces marine processes into the deltaic system that can be translated as a mixture of fine-grained sediments derived from the fluvial delta along with marine sediments from the Black Sea. This region is of particular importance for the ecology and hydrology of the Danube Delta due to the presence of sandy deposits that cause a major change in both natural and ant...

Electrical equipment that operates in a potentially explosive atmosphere, have characteristics specially designed for operation in this area. For security reasons, it is essential that the integrity of these special features be preserved in these areas throughout the life of the installation. Using electric equipment in potentially explosive atmospheres brings forward several particularities therefore the problems that appear during the design, construction and operation of electrical devices and installations bri...

Environmental water chemistry is substantially aided by modern electrochemical research. Sensitive voltammetric techniques are much more useful for metal species in natural waters, where complexation with organic molecules predominates. Many environmental electrochemists are still interested in determining the stability constants of metal ion complexes with various ionic species found in natural waterways. The aim of this work is to investigate the possible influence of complexation of amine and carboxyl groups of...

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 pha...

Using data from the Eurostat datasets on employee computer and internet use (ISOC_CI_CM_PN2, measured as a percentage of total employment) and resource productivity (ENV_AC_RP, measured in Euro per kilogram) across the European Union between 2014 and 2022, this paper investigates the potential effects of these technologies on sustainability efforts within companies. Using the economic value produced per kilogram of material used as a proxy for resource utilization efficiency, the study seeks to establish a relatio...

Construction using 3D printer technology seems to be not just a passing trend and a growing number construction companies are approaching this new construction methodology. Although construction processes with printers are becoming standardized, it is also true that many other aspects must be considered in the design phase. Better this construction methodology becomes known, more architects and engineers will have to learn how to design these constructions, in the methods of statics, systems, etc. A very important...

In the present, regional policy faces the demanding task of developing suitable decision-making tools for regional development that will effectively take into account the need to mitigate climate impacts. Blue-green infrastructure (BGI) emerges as one of the most promising tools in this field. BGI represents an integrated approach that harnesses the synergistic effect of natural and civic systems to manage water, regulate climate, and protect biodiversity. This comprehensive approach not only helps reduce the risk...

In the area of the city of Piatra-Neamt (North-East of Romania), the activities related to the tourism sector may register malfunctions due to the manifestation of some natural risk phenomena. The touristic potential of the city (recreational, sports, balneary, cultural-historical) represents a central component of the national tourist structure with many exploitation possibilities. Risk situations of tourist activities can be induced by the natural hazards attributes (probability and intensity) and vulnerability ...

Transport by mine hoisting equipment is used to remove excavated materials, deliver materials, machinery, and equipment required for the mining process and related activities, as well as transport persons. These technological devices use transport containers to pull the load in the form of a skip, cage, or skip-cage from underground to the surface. Mining machines are intended for vertical and inclined pits. Scientific research discussed in the present article focuses on the transport capacity of the mine hoisting...

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 throug...

Sustainable food production is growing along with consumer demands to find healthy products. The management and minimization of food by-products and the recovery of products with low economic value represent both a trend and a current necessity for the food industry. Prunus cerasifera is a species of plum native to Southeast Europe and Western Asia. It is also called Cherry Plum and Myrobolan Plum. It is cultivated mainly as an ornamental plant with several varieties differing in leaf and bud color and secondarily...

Resource efficiency is an important aspect in the efforts to support and evolve economic development, while maintaining all natural systems unaffected. However, resource efficiency cannot guarantee the perpetual use of existing water resources. Water resource efficiency policy must be based on an awareness of the number of resources that can be used, but also the impact of activities on the environment and how it is affected. Developing and increasing the number of consumers. Options for water sources used for dri...

The current development of nanotechnology responds to climate change, sustainability issues, the energy crisis, and the need to improve the quality of life. The question, however, is what are the societal impacts and public acceptance of nanotechnology? To explore this, a pilot cross-sectional study was conducted in the Czech Republic. The main objective of this study is to discuss consumers' willingness to pay for products containing nanotechnology. A sub-objective is to present the results of a pilot cross-secti...

Environmental concerns related to the implementation of circular economy has led to the development of new generations of materials. Interest in polymer composites reinforced with natural-organic/inorganic fillers is growing. Producers of polymer composites convert their production to optimize and replace traditional products with new ones with a high content of bio, recyclable materials, for sustainability and responsible actions. Research and industrial awareness are focused on ecological composites based on nat...

The effect of pressurized hydrogen on pipeline walls is an important phenomenon that can cause damage to the integrity of the pipeline structure during transport and storage of gases. Hydrogen can penetrate the wall of metallic pipelines (alloy steel or carbon steel) and cause cracking or rupture of the material, which can lead to pressure loss or even serious effects (explosions, fires). The embrittlement of the metal by hydrogen is a phenomenon of degradation of the mechanical properties of the metal, as a resul...

Mycotoxins are agents with different and complex chemical structures, with toxic effects for humans and animals. They can be present in feed and food, although in very small quantities, mycotoxins have a negative effect on the health of animals and people. Ochratoxins are mycotoxins intensively studied in recent years due to their toxicity on the animal and human body; these toxins show nephrotoxic, immunotoxic and myelotoxic, neurotoxic and carcinogenic effects. Thirty male rats of the Sprague- Dawley breed were ...

In a view of the sustainable development principles, the development of advanced lowcarbon building materials represents one of the most important issues in the construction industry. To follow the current trends in research and development of building materials, special attention is paid to the reuse of all kinds of waste and industrial byproducts. One of the serious problems of today-s society is the huge production of sewage sludge from waste water treatment and its disposal. As one of the promising ways of sew...

The article presents the results of satellite remote sensing to assess the consequences of hostilities in nature protected areas. Since February 24, 2022, 20% of the nature reserve fund of Ukraine has suffered from the war. The real level of damage to the objects of the nature reserve fund as a result of the war cannot be estimated. After all, active hostilities continue, and restrictions are created for environmental activities in the temporarily occupied territories. Therefore, remote monitoring is the only tool...

Through mathematical modeling at the local or regional level, local or zonal trends for meteorological factors can be determined and the main hazards to which elements of the infrastructure, the economy and the population are exposed. In the present study, a statistical analysis was aimed at trying to determine the analysis of variability and climate change in the western part of Romania and a statistical correlation between the temperature variation and the amounts of precipitation recorded at the Timisoara weath...

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...

Risks are present in all economic and industrial activities that manifest themselves both through economic losses, malfunctions of installations and equipment, as well as the occurrence of minor or major accidents with particularly serious consequences resulting in deaths and injuries, pollution of the environment. The assessment of risk levels stimulates the co-interest of economic operators to improve their working and environmental conditions, respectively to take measures to move from high risk levels to lower...

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...