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The aim of the presented work was to develop and evaluate the novel thermal insulation plaster intended for repair and renovation application. The thermal parameters of the reference lime plaster were enhanced with the substitution of 50 vol. % of silica sand with expanded perlite. The hardened plasters were characterized by their specific density, bulk density, total open porosity, compressive strength, flexural strength, and dynamic modulus of elasticity. The thermal conductivity and the volumetric heat capacity...

Analysis of the air environment and atmospheric emissions is an efficient method for assessing the ecological situation in cities. Assessment of the chemical composition of deposit environments (soil, snow) shows long-term contamination. The snow cover (SC), being a natural accumulating plate, reflects environmental contamination with heavy metals (HM) caused by entry from various sources. The work aims to study the three-dimensional dynamics of large city contamination with HM. Sampling (in 2019 - 100, in 2020-10...

The theme of the work aimed to present a model of drawing up and carrying out a drawing work for collective constructions in order to build a building with a ground floor + 1st floor + attic. This project has been approved by the City Hall of Timisoara, Romania. The purpose of the work was to identify and execute a topographic elevation, to draw and track the horizontality and verticality of the building for each level (ground floor, floor, attic). The work was completed with the preparation of a cadastral documen...

The Cri?ul-Alb River springs from the Apuseni mountains, and its course crosses many rural and urban towns. In the Cri?ul Alb hollow, there are several tributaries that have a significant contribution to the volume and water flow of the Cri?ul Alb River. Due to the abundant precipitation combined with the melting of the snow during the spring period, high levels of water flow are created, endangering human settlements and other goods isolated by their flooding. The aim of the paper was to present a topographic stu...

Pipe conveyors belong to the most perspective systems for continuous transport technologies intended for the transport of bulk materials in various industries. In addition to the product and process quality, another important component of the quality evaluation system for pipe conveyors is the service quality. Service quality evaluation is based on the service quality of enclosed rubber conveyor belts which represent the most sensitive and the most expensive structural component of pipe conveyors. This article ana...

In the past decades, the necessity for detailed earthquake microzonation studies was recognized for Bucharest city first because significant damage occurred here during the last major earthquakes, as well as for other densely populated cities in Romania exposed to major seismic risk due to the intermediate-depth earthquakes occurring in Vrancea zone and local site effects. Numerous studies established different approaches incorporating non-linearity analyses, which generally did not consider groundwater level chan...

In this study, a classical biotrickling filter (based on compost microorganisms) and an upgraded biotrickling filter (based on a mixture of compost microorganisms and microalgae Arthrospira platensis PCC 8005) are evaluated in terms of carbon dioxide production, during their use for volatile organic compounds (VOCs) removal from air. The experiments were performed using acetic acid vapors as model VOC and the biotrickling filter (BTF) performance was observed at different VOC concentrations, gas flowrates and pH v...

The paper presents the results of research on the possibility of calculating the investment potential of a particular area based on its spatial characteristics. The level of spatial unit in this research is local administrative unit (cities or municipalities), while the geographic coverage is entire area of Republic of Croatia. Regarding the method, the results could be applied internationally and are not limited to national borders. Furthermore, when deciding on investing, it is important to know the risk. This r...

Reducing the use of paper is, first and foremost, an essential factor for environmental economics and sustainability. Digital transformation is also one of the tools supporting the environmental economy, improving business efficiency and reducing costs in the following ways: reducing errors and processing times and increasing security and confidentiality. In the document on Digital Transformation Guidelines 2021-2027 (Cabinet of Ministers Order No 490 of 7 July 2021 on Digital Transformation Guidelines 2021-2027. ...

The rapeseed oil is a promising eco-friendly lubricant for applications involving environment protection. But any vegetal oil has shortcuts especially related to low viscosity and thermal stability. Research in additivation with nanoparticles is of interest for improving load capability of the contact and for reducing wear. Other tribological characteristics, as friction coefficient, could oscillate around values offered by the neat vegetal oil, with more or less influence of the system behavior. The four-ball tes...

This study describes the typology of family agricultural systems from the western part of Romania. Fourteen family agricultural farms from Arad County, Romania, are taken in the study, whose areas range between 0.34 ha and 25 ha, with an average of about 22 ha. The main crops within these farms are grain maize, followed by wheat, oats, sunflower and rapeseed and, on smaller areas, fodder, vegetables and triticale. Because the structure of the crops is very diverse - the largest area is 12.60 ha and the smallest on...

Recently, the echosounder systems in the Bulgarian Black Sea shelf have become a standard method of seabed exploration. The paper presents the present-day field activity of bathymetric research, which revised available hydrographic data for the seabed. The study aims to combine and update archival bathymetric data from contemporary multibeam echo-sounding scanning and archive single-beam data. This work presents activity in the second stage of Project -Multidisciplinary study of Burgas Bay - MidBay. (Composition o...

The distinction between noise and sound is mainly based on the discomfort of the latter, the noise being perceived as a negative sensation, while sounds are generally perceived as being pleasant. Noise and noise pollution are practically identical terms. Noise pollution is the exposure of humans and / or animals to sounds whose frequencies and intensities are harmful, affecting the auditory system, inducing stress or other instant or long term effects on the physical and mental health. For too recently, it has bee...

Nowadays, wheat is the most important food source worldwide and rapeseed has become one of the alternative sources of energy, that is, biofuel. In the current global economic context, the practice of intensive farming, by applying large amounts of fertilizers is no longer sustained, mostly because of the negative environmental impact and also because of the high prices of fertilizers. It is imperatively necessary to practice an efficient management of nitrogen fertilizer, in order to avoid both environmental and e...

Predictive process control is a method of regulation suitable for controlling various types of systems, which is based on the idea of using the prediction of future system behavior and its optimization. Normally, a system model is used to predict behavior, and therefore it is necessary for the correct function of predictive control to make its correct selection and determine its parameters so that the controlled system is described as accurately as possible. Another advantage of predictive control is the possibili...

The concept of sustainable development involves economic development, social development, ecological development, political development, human development, spiritual and cultural development. All these elements pursue three fundamental objectives: smart growth - developing a knowledge and innovation-based economy, sustainable growth - promoting a more competitive and greener economy, in which resources are used more efficiently and inclusive growth - encouraging or high employment of the workforce, to ensure socia...

Arsenic (As) and antimony (Sb) are elements with similar chemistry and geochemistry, but their environmental risk differ depending on the origin and degree of the pollution. As and Sb are both very toxic, particularly their inorganic substances in the oxidation states of III and V, which also represent the most common As/Sb forms in the environment. In environmental systems, As mostly occurs as the tetrahedrally coordinated, pentavalent arsenate AsO43- (in oxidising environment), and the trivalent arsenite AsO33- ...

The Valea Jiului coal basin is the largest mining basin in Romania and includes from east to west the mining fields: Lonea, Lonea-Pilier, Petrila-Sud, Petrila, Livezeni, Salatruc, Dalja, Iscroni, Aninoasa, Vulcan, Paroseni, Lupeni , Lupeni-Sud, Barbateni, Uricani, Valea de Brazi and Campu lui Neag. The first opening works in the Lonea perimeter began with the excavation of the Rascoala gallery, in 1870, a gallery supported by brickwork. Also in the same period, the up-to-date exploitation of the outcrops from the ...

The European Union (EU) is hurrying towards a climate-neutral economy, which includes increasing the use of renewable resources, including wood for heating. This direction means that the use of wood is increasing every year in the EU and beyond. The by-product of this activity, biofuel ash, is correspondingly increasing, so its further use should be considered a long-term issue. Energy producers face the challenge of making the best use of ash and often landfill it, thus moving countries further away from the EU D...

Today, drones are already widely used in agriculture and forestry. Drones can help spray plants, take surface measurements, and estimate the damage caused by adverse weather conditions or wild animals. Drones can also be used in caring for the condition of crops. Traditional methods of detecting threats related to plant disease are time-consuming and ineffective. Thanks to the use of drones equipped with appropriate vision systems, it is possible to carry out quick and precise control of the condition of the plant...

Using aerial vehicles without pilot (UAV-unmanned aerial vehicle) or Drone has seen a rapid development, over the last decade, in order to obtain spatial information of the Earth's surface. This scientific paper was realized for the Hydrotechnical Node of Costei, from Timis County and has as purpose the processing of aerial images, obtained from a Phantom4 Pro device, which is capable to capture video at 4K resolution at 30 frames per second and Full HD 1080p at 120 frames per second for a slow motion with a Sony ...

Environmental impact assessment is a complex scientific process that often exceeds procedural and legislative aspects. The data and information used in the EIA derive from various sources, so they must be integrated using an appropriate methodology. The established assessment methods are Rapid Impact Assessment Matrix (RIAM) and Geographic Information System (GIS), each allowing the integration of observations, data, and environmental information. The present study aims to apply RIAM and GIS to the impact assessme...

Cyclophosphamide (CP) is a cytostatic drug prescribed at large scale, which proved to induce toxic effect on ecosystems and cannot be removed by conventional wastewater treatment processes. Therefore, there is a need to test advanced degradation processes for its removal from wastewater discharges. CP photocatalytic degradation via UV-VIS irradiation was studied using a Nitrogen -doped TiO2 catalyst. The catalyst was synthesized as thin film deposited on glass substrate under nitrogen atmosphere technique. The inf...

The difficulty facing the food industry in the future is sustainability, a topic that has received a lot of attention in recent years. The recovery, recycling, and valuing of food by-products is one of the many methods suggested to encourage the development of a sustainable food system. The most abundant sources of bioactive chemicals and byproducts that can be used to create new functional ingredients for foods are found in fruits and vegetables. In this paper, the possibility of using by-products of wine industr...

In the context of the current trend for a healthy life, more and more emphasis is placed on the partial replacement of meat-based foods with plant-based foods. This is difficult due to the need for more consumer awareness of the benefits of rebalancing diets in favor of vegetable proteins, thereby explaining the low consumption rate of these alternative products. This work aimed to demonstrate that partially replacing meat with vegetable proteins can improve nutritional properties while maintaining high sensory pr...

Adsorption is a treatment process based on accumulation of the adsorbate (pollutant) on the adsorbent surface that has been successful used for the optimization of wastewater treatment plant effluents cleaning. This work will present the main experimental results for the removal of naproxen from water by adsorption using activated carbon obtained from olive stones. Four types of activated carbon material were prepared from olive stones. The batch method was applied to experimentally measure the equilibrium adsorpt...

Currently, in order to respond to the needs of the human population and food security issues worldwide, it is necessary to implement strategies for recovery and transformation of waste from the food industry into a circular system of production and consumption. Fruit waste such as peels and seeds have a high waste rate worldwide. These wastes have a high nutritional content, suggesting a potential for use in the food industry. Pome fruits (apples, pears and quince) belong to Rosaceae family, have tough central cor...

The worldwide olive oil sector is a strategic sector for olive oil producing countries due to olive oil nutrition and health benefits. With what is being produced of olive oil, it continues to produce wastewater with a significant environmental impact due to the high organic load and the biochemical composition of this wastewater, particularly, the presence of microbial growth inhibiting compounds such as phenolic compounds, which makes its biological treatment difficult. On other way, red mud, the main leaching r...

Conventional wastewater treatment plants (CWWTPs) play a key role in reducing the environmental impact of urban wastewater. But nowadays, this role goes even further with climate change, water scarcity, and the current energy crisis. After the thickening of the secondary sludge, a wastewater flow is generated, which is normally recirculated to the plant head for further treatment. This work aims to use secondary thickener wastewater (STW) as a culture medium for Chlorella vulgaris, Neochloris oleoabundans and Scen...

Current challenges in the building industry are related mostly to the preservation of virgin/natural materials, decreasing the environmental footprint, and increasing the reuse rate of disposed materials. This paper reflects current trends in the use of secondary raw materials of various industrial processes as sources for the production of alternative materials, for example, alkali-activated materials (AAM). Specifically, the paper deals with the description of the basic physical and mechanical properties of fine...

The main role of ventilation systems and especially air conditioning systems is to create indoor conditions and air quality inside the rooms that are independent of external atmospheric influences. The sizing of ventilation systems and especially of air conditioning systems is done, in most cases, by considering the climatic elements as a basis for calculation. The real limit to air quality insurance it consists in maintaining in the air certain concentrations of harmful substances which do not endanger human heal...

The registration and analysis of seismic signals generated by different types of machines and vehicles are areas that, thanks to modern technological capabilities, create an opportunity to study various aspects of environmental behavior and generate timedepending loading function for civil engineering analysis. These analyses can be used in various areas of engineering research - on the one hand as a means of identifying the actuator (vehicle) and assessing its operating mode, and on the other hand - as a means of...

The Uyandino-Yasachnaya magmatic arc is the largest volcanic-plutonic belt in the north-east of Russia. However, there is yet to be a consensus on the nature of the arc, despite a long study of the rocks composing it. Most researchers consider it to be an island arc formation, however, some researchers also believe that it of a riftogenic or heterogeneous nature. The arc is composed of volcanogenic-sedimentary strata of variegated composition and associated subvolcanic formations. The rocks were formed during the ...

The climate change facing humanity requires two major and immediate solutions: the need to drastically reduce greenhouse gas emissions on the one hand, and on the other hand the need to adapt to the effects of climate change, given that these effects are already visible and unavoidable due to the inertia of the climate system. Romania is vulnerable to a number of natural climate and geological dangers: floods, droughts, extreme temperatures, the western part of the country registering over time some devastating fl...

When studying the mechanical behavior of hydrated binders, it is necessary to prevent hydration contraction tensile failure in order to properly characterize the mechanical properties of the material. This is regulated by standards for cement testing, however for the case of water-cement-bentonite mixtures the influence of standard sand is not thoroughly studied. Since the hydration shrinkage and water suction is different for cement and bentonite, a range of eleven combinations of water-cement-bentonite were used...

Biodiversity can be defined as the diversity of ecosystems, expressed as symbioses, habitats, landscapes, species diversity and genetic diversity within species, i.e. the totality of the gene pool that constitutes nature at the global level. In the current period, but especially in the last half century, there has been a steady loss of biodiversity with major consequences for the living world and severe impacts on human society. Biodiversity is a fundamental basis for human existence and humanity is itself a part ...

Wind energy has grown in popularity and concomitantly so has the installation of wind turbines. As both alternative and green sources of energy, many may assume that wind energy is replacing fossil fuels such petroleum and natural gas and leading us to a more sustainable future. While renewable energy is part of the sustainability equation, another common attribute of achieving sustainability is the localization of production and consumption. In many ways, this almost automatically occurs with wind turbines becaus...

Air pollution by particulate matter (PM) in urban environment is an ongoing problem with increasing severity. With the gradual evolution of electromobility and lowemission heat sources, the focus is shifting to non-exhaust PM emissions. Wind induced PM resuspension is one of them. This source is hardly amenable to mitigation measures. It was assumed, that only coarse PM (PM10-2,5) can be lifted from the ground by the wind. By the evaluation of the long-term data series, we can divide the PM10 concentration to its ...

As part of the studies aimed at the individuation of the best techniques for the beneficiation of a mineral of wollastonite, coming from an Italian deposit, the problem of the optimization of the milling step was also considered, since the industrial use of wollastonite usually involves a preventive fine grinding. Therefore, in order to evaluate the grindability characteristics of this mineral, in consideration of the lack of data available in literature, we proceeded to the determination of its Bond index through...

The structural analysis of the civil infrastructure is vital in order to track the evolution of degradation in time, to prevent disasters, but also to document and conserve the sites of cultural heritage. This paper review-s the workflow on the acquisition of point clouds to Terrestrial Laser Scanner (TLS) with those collected by photogrammetric 3D models based on images captured by an unmanned aerial vehicle (UAV), analyzing the data sets on two diferent type of bridges located in western Romania. The obtained da...

Currently the resources of rare metals, especially Ta, Nb, Be, and Li used in high-tech industries, are of great demand in Kazakhstan and worldwide. Main Ta, Nb, Be, Li, Sn, and W deposits in the Great Altai territory are hosted by Permian granitic belts that formed during the Late Paleozoic-Early Mesozoic orogeny, in a postcollisional setting. The largest metallogenic structure of the Kalba-Narym granitoid belt accommodates many genetically different deposits and occurrences. Pegmatitic rare-metal deposits have v...