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Currently, one of the main problems in the extraction of useful minerals in term of environment is their transport in quarries. With the requirements to reduce the noise of the belt conveyor track, we were looking for a suitable solution to reduce it. So, we started thinking about attaching rollers made of a material other than steel. The final solution was to insert classic rollers in polyurethane beds called suspension cartridge - which are roller holders made of polyurethane and reinforced with a steel liner to...

In contemporary architecture, glass is one of the most popular materials and considered a fundamental source for natural lighting. However, the advantage of high light transmittance has shortcomings: Intense solar radiation affects the energy balance and the well-being in indoor spaces with inadequate cooling. Vertical greenery systems (VGS) can contribute to an improvement of indoor climatic conditions behind glazed facades through natural shading and cooling of the surroundings. Natural light input is only parti...

Among the support activities of any waste management actions, the optimal logistics processes are essential to assure time and cost-effective recycling scheme. Companies are recognizing that reverse logistics is a component of the total logistics management process that is growing in importance. Reverse logistics services are part of a trend toward incorporating environmental concerns into business philosophy and everyday business operation of manufacturing firms. An Environmental Management System (EMS) is a set ...

The installation and maintenance of equipment intended for use in potentially explosive environments requires specific knowledge and qualifications for the personnel who commissions and subsequently maintain such equipment. When installing and maintaining electrical equipment, situations may arise which may in turn lead to an unacceptable level of risk with regarding to the activation of ignition sources of potentially explosive atmospheres in their immediate vicinity, due to the failure to comply the principles o...

In the context of adaptation of the water resources sector to climate change, water reuse is widely proposed and encouraged especially in arid and semi-arid areas like the Middle East. We consider riverbank filtration (RBF) an appropriate technology that efficiently and dependably procure quality water from Zarqa River thus making a contribution to protect Jordan-s remaining surface and ground water resources. The river is contaminated with treated domestic and industrial wastewater principally from the city of Am...

By product is broadly understood as a product obtained in a usually industrial or biological process in addition to the main product for which the process is carried out. The main challenge addressed to humanity as well as productive ecosystems, regardless of the form of terrestrial or aquatic substrate, is to cope with the rapid rate of growth of the planet's population. The demographic growth of the planet must be in balance with the maintenance of the environment and also with climatic shifts. By-products are o...

The energy crisis triggered globally in the last quarter of 2021, forced Romania to go through a winter with liberalized electricity and gas prices, a period unprecedented in terms of consumer prices, accentuated by the result of closing energy targets that coalfired operations as a result of the imposition of EU conditions for the restructuring of the mining and energy sector. The year before, 2020, the COVID-19 pandemic, with restrictions imposed, produced a decrease in electricity demand, a decline in coal-fire...

Renewable energy plays a fundamental role for the Green Deal and for achieving carbon neutrality by 2050. EU Directive on renewable energy revised confirms the community block objective of obtaining 38-40% of energy from renewable sources by 2030, doubling the share of solar, wind and other renewables in Europe's energy mix by the end of the decade. The European Commission recommended that Romania increase the share of energy from renewable sources used for the year 2030 to at least 34% in a future analysis. Roman...

People hear about disasters that affect the whole world daily from various media sources. These disasters include natural disasters, disasters caused by mankind or a combination of the two. This includes the war that is happening in Ukraine. Many disasters can cause a fire to occur in buildings. With any fire in a building, a safe evacuation of people must be ensured. Thus, it is important to design buildings so that when people are evacuating, they are safe. Escape routes must ensure that all people can get to a ...

The economic results of many dynamically developing European countries largely depend on the availability of mineral raw materials. For this reason, securing their supplies from import must be supported by a committed foreign policy as well as a sustainable raw materials policy in the field of their obtaining from domestic sources, both from mineral deposits, as well as secondary and waste sources. Raw material security must be based on the diversification of supply sources and minimizing supply risks. The results...

Underground mining remains one of the most dangerous occupations in the world, and coalmining is known for its high accident rates. In this paper we aim to present an overview of safety in the extractive industry and we will present statistics on known accidents. The repeated occurrence of explosions in underground mining raises questions about the measures taken to prevent their occurrence. Hazard identification and risk analysis are necessary to identify adverse events that may lead to a hazardous situation, to ...

Wastewater treatment and desalination are considered important solutions to meet the water scarcity in Jordan. The irrigation with reclaimed wastewater, that usually has elevated salinity levels, may adversely change soil structure, stability, and hydraulic properties. Water traditional desalination techniques require huge energy and capital investments. Zeolites in normal and nano scales enhance the desalination process performance and reduce its economic and energy requirements. In this study, batch experiments ...

Surfactants produced by microorganisms, known as biosurfactants, have recently found wide application in the industry, from cosmetology to oil processing. Biosurfactants are more tolerant to extreme environmental conditions and less hazardous for the environment as compared with their chemical analogues. Despite on the fact that many biosurfactant producers have been recently isolated and described, the challenge to explore new producers still remains very urgent. In the present study, the isolates obtained from r...

The grass of the grasslands is the most accessible source of food for herbivores during a significant period of a year. The knowledge of the floristic composition of grasslands reflects the current state and is an essential element in determining the load of animals. This paper is a case study and aims to inventory the species participating in the grass cover near some localities in Western Romania. Vegetation surveys were made in March, June and the first quarter of October. The study method by which the vegetati...

The intensive development of remote sensing in the marine environment provides excellent bathymetric and substrate mapping opportunities on the southern Bulgarian Black Sea coast. The Bay of Chernomorets is a perfect opportunity to combine data from single-beam sonar, multi-beam sounding and drone imaging for the purpose of seabedforms and substrate mapping. This paper presents the second stages activity of the Project -Multidisciplinary study of Burgas Bay - MidBay. (Composition of a detailed digital model of the...

Nowadays, remote sensing techniques play an important role in the rapid acquisition of a large amount of spatial environmental data. The development of sensors in the last decade has led to the development of Earth observation satellite missions, e.g., Sentinel, PlanetScope. Numerous machine learning and deep learning methods are used in nowadays research to classify satellite imagery to enable rapid environmental mapping (e.g., land cover and land use, water bodies). Posidonia oceanica is considered the most impo...

-he space-time distribution of earthquakes is of substantial importance for understanding the physics of the earthquake generation process. Earthquakes can be analyzed as a time series of events that result from the released strain in the earth's crust. The study of the space-time distribution of earthquakes using statistical methods reveals many of their characteristics. Sequences of seismic events affect both spatial and time distribution of earthquakes. It is necessary to know the statistical characteristics of...

Cryogenic energy storage (CES) is a large-scale energy storage technology that stores electricity in the form of liquefied gas at cryogenic temperatures. The CES system has three sub-processes, namely, charging or liquefaction, storage, discharging or power cycle. Because the main energy costs in this system are related to the liquefaction module, we will focus on the analysis of liquefaction processes. The present work aims at performing a comparative study between cycles commonly used for the liquefaction of air...

Gluten is present in a variety of foods consumed in everyday life, and due to its dominant presence in the diet, over the years an increasing number of people have started to develop intolerance to it, often causing allergies, sensitivity or coeliac disease. The main objective of this study was to develop a gluten-free product that meets high quality standards to satisfy the consumer. In order to achieve the objective, a product based on almond flour, rice flour with added cranberry powder with high nutritional va...

A designed protection system should not fail once or under a small number of hits. Tests to assess ballistic protection are expensive and numerous. The simulations support engineers in limiting the number and complexity of impact tests. This paper discusses the failure mechanisms and simulated impact phases between a bullet (similar to 9 mm FMJ) and a panel made of 8-layers, 12-layers and 16-layers, at two impact velocities, 373 m/s and 420 m/s. respectively. The 8-layers and 16-layers simulations are compared to ...

Romania-s physical-geographical and lithological complexity creates a great diversity of climatic and pedological conditions, which determines the richness of the types of ecosystems and habitats, as well as the presence of five biogeographical regions, including the Alpine bioregion. In Romania this biogeographical region includes both Carpathians peaks and coniferous and mixed forests of the Carpathians, but also the intermountain depressions and higher hills along the mountain chain. Various mountains are home ...

The paper presents issues regarding uncertainty involved in the test process to ignition of small components for intrinsically safe equipment. In the first part of the paper, the classification of explosion-protected equipment is presented. In power generation and also in other industrial areas, the incidence of flammable substances is a common factor. As a consequence of this, the risk of explosion may arise. On the other hand, installations located in areas endangered by the presence of flammable substances must...

Forest fires cause major damage to human habitats and forest ecosystems. Early detection may prevent serious consequences of fast fire spread. Although there are many smoke detection algorithms employed by various optical remote sensing systems, there is still a major misdetection of images containing fog. Fog exhibits similar visual characteristics to smoke. Furthermore, when monitoring dense forests many smoke detection algorithms would fail in robust recognition due to fog covering the trees at dawn. There have...

Decarbonising the EU-s energy system is crucial to reach the 2030 climate objectives and the EU-s long-term strategy of achieving carbon neutrality by 2050. Based on these Green Deal goals and the current energy situation in Europe, it is highly important to focus on biofuel energy sources. Our research deals with the behaviour of households in the Czech Republic and changes in their consumption habits in the last decades. The main goal of this paper is to evaluate the development of the consumption of biofuels by...

The paper deals with soil properties characterized the intrinsic peculiarity of studied Chromic Cambisols from the Upper Thracian Lowland, in the Southern Bulgaria. To fulfill the aim, a systematic survey and sampling have been carried out on the terrain with conventional and organic systems of farming. Soil physical, chemical and physicochemical properties were discussed including the analyzed data for particle size distribution, content and composition of organic substances, cation exchange capacity, soil bulk d...

The paper deals with statistical analyses of data on soil properties of Pellic Vertisols selected from the eastern as well western part of the Upper Thracian Lowland, in Southern Bulgaria. Based on the survey in 2019, 2020 and 2021 at conventional and organic farming the data was processed using the statistical package Statgraphics (Anova). Soil textural class was the same a light to heavy clay and the total porosity was low. Natural variability of soils was due to imposed local separateness of organic farming fro...

Soil waterlogging due to excess moisture resulting in hypoxic soil conditions can have detrimental effect on development of many dryland plants growing in locations with temporary water logged soils. Oxygen stress in hypoxic soils can lead to decrease root water uptake and transpiration compared to well aerated soil conditions. In turn reduction of transpiration have a positive effect on soil water budget facilitating the preservation of waterlogged state of the soil. We investigate this phenomenon in a greenhouse...

Research presented in this study aimed to identify the soils from two vineyards, Tirol and Moldova Noua, and to determine the physical and chemical properties of the soils there. Most of the vine plantations in the southern part of the vineyard are on soils that provide very good conditions for growth and development, especially for red wine vines. Preluvosoil, aluviosoil, districambosoil, and lithosol predominate the plateau. Following the research and analyses carried out, the following conclusions can be drawn:...

Investment projects aimed at brownfield revitalization have significant potential for the economic development of the area where they are located. Such a project usually removes old environmental burdens or deals with a problem with non-functional or dilapidated buildings. However, an appropriately set investment plan which respects internal territorial economic connections as well as the character of surrounding environment can provide solutions to other regional problems or implement economically beneficial acti...

The studies using (14C)-labeled tea (Tea Sinensis) biomass have demonstrated that tea biomass is degraded in red (Nitisols Ferralic) and brown forest (Humic Cambisols) soils. The application of manganese sludge and manganese sulfate (MnSO4) in these soils increases the mineralization in both soil taxa evidencing an active participation of Mn ions in the degradation of phenolic substances. When applying manganese sludge and/or MnSO4 to the experimental samples, most of 14CO2 is released during the first 60 days as ...

This paper is in the context of studies on the variability of atmospheric factors that highlight the fluctuations associated with climate changes. The acquisition of data for the concentration of NO, NO2 and NOx was collected from the national air quality monitoring system which includes 158 monitoring stations. the monitored national area was divided into 8 study areas to facilitate the calculations. In this paper we present the significant results for the Southeast of Romania for a period of 5 years - between 20...

This paper presents the spatial and temporal variability of sulfur and carbon oxide concentrations in the South-eastern part of Romania. Climate change is a general threat to the provision of essential individual resources. The acquisition of data for CO and SO2 concentration was collected from the national air quality monitoring system which includes 158 monitoring stations. The acquisition of data for the concentration of CO and SO2 were collected from the national air quality monitoring system which includes 15...

The main objective of the paper is to analyze and evaluate what are the manifestations and impacts of suburbanization in the hinterland of the city of Presov. The first manifestations of suburbanization started in 1996 and continue even nowadays. This process brings several consequences, economic, social, demographic, environmental, etc. When looking at migration flows, Presov has shown a long-term decline in population. The municipalities located in its hinterland show an increase in population. In this paper we ...

This study aims to observe the spatial distribution of the arthropods biodiversity inhabiting the soil surface of olive groves. For this purpose, a sampling campaign has been carried out in a 15.1 ha plot of this crop. This plot is located in the south of the Iberian Peninsula. The study comprised a total of 65 sampling stations for epigean arthropods. Each station consisted of two drop traps, one located under the canopy of the olive tree and the other in the middle of the strip. With the arthropod catch data fro...

The environmental management system should be considered as part of the overall management system. This involves looking at the organizational structure, planning activities, responsibilities, practices, procedures, processes and resources for developing, implementing, achieving, reviewing and maintaining environmental policy. Basic principles and requirements of the environmental management system are aimed at identifying, researching, controlling and reviewing the factors influencing the environment, which allow...

Aromatic plants have been one of the important concerns of man since the beginning of his existence. Seasoning plants, due to the presence in their composition of active principles with antibacterial and antifungal effect, allow a better preservation of food, a fact that over time has played an important role in preventing possible infections. Chlorophyll is the pigment that gives plants their green color and supports plants in absorbing energy and nutrients. Chlorophyll is found in most green plants and vegetable...

The article justifies the perception of green public procurement as a set of policies, actions and relationships with environmental contexts that emerge and shape the market for green products and services. The purpose of this study is to analyze the state of the green public procurement market in Bulgaria, to clarify the difficulties that contracting authorities (or assignors) most often encounter in the use of environmentally friendly criteria in public procurement, as well as to identify the main risks and chal...

Sinorhizobium meliloti are agriculturally valuable species of soil bacteria that form nitrogen-fixing symbiosis with alfalfa plants. Global climate changes lead to an increase of agricultural areas subjected to salinity. Current knowledge about about high-salt stress impact on soil saprophitic root nodulated microsymbionts of legumes is weakly studied and rhizobia gene pool responsible for salt tolerance are fragment and far from clear. An increase of bacteria nonspecific resistance (immune status) to unfavorable ...

The safety of navigation and life in the risk areas adjacent to the coastal area, represent the central objective of the paper and meet the provisions of the European directive "in force." In this context, for defining the geometry of the autonomous modular system used as physical system for marking the fairway, mathematical prediction models were developed. The prediction of phenomena and functional characteristics for autonomous modular system was possible by using a specialized software, where the calculation c...

The East Kazakhstan territory is the unique geologic province where a number of largescale non-ferrous and gold deposits are concentrated. Gold base metals (goldcontaining) type is represented by gold containing sulphide complex deposits. The Western Kalba zone is characterized as a gold-bearing structure of multi-stage development and long ore-preparation and ore-forming processes. At the first stage, in the conditions of the intercontinental sea basin (C1-2, C2), the donor carbon-terrigenous formation (Arkalyk, ...

The paper aims to analyse the main air pollutants considered responsible for most premature deaths and illnesses: particulate matter, nitrogen dioxide, sulphur dioxide, and ground-level ozone. The research methodology used is based on the analysis and synthesis of information from the scientific literature on air pollution, identification of sources of air pollutants and their implications for human health. The principal research method used in the paper is content analysis. The importance of this publication is t...

This paper presents the degree of noise pollution in Braila. Braila is a city located in southeastern Romania. For this purpose, sound level measurements were performed in various important locations in this city. The monitoring took place between November 2019 and June 2020. The measurements were performed using a professional digital acoustic sound level meter that can record sound values between 30dB-130dB. The sound level meter works with two frequency filters: -A- and -C-. -A- filter responds in the same way ...

In recent years, virtual reality developers have managed to create an artificial environment that can simulate reality so that the user has the impression of an almost real physical presence in the virtual world. By overlapping and synchronizing projected images with spatial sounds and even with forces that interact with the user, the user is detached from the real environment and an all-encompassing involvement in the virtual world occurs. Virtual reality is frequently present in aviation, medicine, military trai...

Geographic Information Systems (GIS) are solutions that cover a wide range of fields, from the management of urban resources, the introduction of satellite tracking and coordination of roads routes, tourism, civil protection, logistical support in case of natural disasters, land records, management of agricultural farms and forest fund, etc. At present there are many uses of science applied in society and which provide decision support for many beneficiaries - companies, public authorities. Thus, GIS with urban ap...

The main objective of the study is the analysis of the effects of the geological substrate and of the geomorphological diversity on the characteristics of the vegetation (the diversity of species, the diameter of the trees). The study area is made up of the Cioclovina karst area and the crystalline area near it, which are located in the Dacian Plateau in the ?ureanu Mountains. Within the study, a series of geomorphological variables were calculated to establish geomorphological heterogeneity, namely: slope, slope ...

In recent years, maritime transport in the Black Sea area, especially along the maritime transport routes that cross this area, has seen a considerable increase compared to previous years. However, navigation takes place not only in ports in Romania, Turkey, Georgia, Russia, Ukraine, and Bulgaria but also outside the Black Sea via Turkish straits, connecting with international routes. Maritime transport consists of two main components: passenger transport and freight transport, both components being directly affec...

Microbiological studies of forest soils are an important field of research due to the role of forest as carbon sinks and the main role of microorganisms in biogeochemical cycle and in the transformation of organic mass. Microbiological monitoring of soils in forest ecosystems is of key importance to achieve accurate and comparable data. This paper examines the interrelationship of soil microbial communities with different environmental characteristics. For the purpose of the study, the influence of soil type, the ...

In this work, a brief assessment of using microalgae (Arthrospira platensis PCC 8005) for lowering carbon emissions during biotrickling filtration of volatile organic compounds (VOCs) from air is performed. In this regard, the removal efficiency of acetic acid vapors (used as model VOC in this study) and carbon dioxide production from this process are evaluated in the presence of: (1) classical microorganisms (e.g. from compost), (2) mixture of compost microorganisms and microalgae, (3) microalgae. A blank trial (...

Unmanned aerial vehicles (UAV) began being constructed many decades ago. Recently - in line with technological developments - there has also been a progression of its expansion, both among the lay public and its dynamic integration within the security services. One of the desired functionalities of the drones is the continuous measurement of air pollution at the scene of a fire. This paper deals with the question of whether drones, due to the rotation of their rotors, do not affect the values of air pollution, the...

Olive pruning mulch modifies the physical, chemical and biological properties of the soil. They are an efficient soil and water conservation system, while simultaneously improving the organic matter content of the soil. In any case, their effect on soil properties is a function of the densities provided. In any agricultural field, there can be significant variations in plant size, which can affect the amount of pruning obtained. In this research, a spatial sampling of pruning amount collected in olive trees (n=59)...