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Industrial activities in the Jiu River basin, especially coal mining, have generated a significant impact on water quality over time, by releasing variable concentrations of heavy metals into the environment. This paper analyzes the trends of variation over time of the degree of heavy metal pollution in the Jiu River, considering the direct influence of the extractive industry in the area. The study is based on data collected from multiple water quality monitoring campaigns, covering an extended period, and aims t...

The research investigates the impact of persistent organic pollutants, particularly pesticides, on the aquatic ecosystems of the Jiul de Est basin. Pesticides are introduced into water bodies via surface runoff, infiltration, and atmospheric deposition, and their bioavailability is influenced by factors such as pH, temperature, and dissolved organic matter. The research evaluates the ecotoxicological effects on key aquatic species, including Salmo trutta fario (river trout) and Squalius cephalus (common chub), by ...

Gases released because of accidents and events that cause the contamination of certain indoor spaces with methane have become more frequent recently. These gases endanger the lives of people who are inside the contaminated spaces, and there is a need for more and more in-depth research on the dynamic behavior of certain substances with a toxic effect, such as methane, once it begins to accumulate in a closed space, for to develop new detection systems and especially for its evacuation in the shortest possible time...

One of the areas in Romania where the environment felt from human activities is Jiu Valley (Petrosani Depression), an area where the main activity was mining. This fact led to pollution of the area, pollution that affects both health of population and tourism, which is considered as a viable economic alternative. Investigation of environmental components, identification and analysis of impact sources on air and surface waters are the objective of this paper, which is a first step of a larger research, that will le...

Noise is a "by-product of technological metabolism", omnipresent in most workplaces, representing one of the discomfort factors for personnel working in the presence of this noxae. Knowledge of risks generated by exposure to noise specific to each activity carried out, allow quantification of the effects on workers such as: masking, auditory fatigue, sound trauma, acute hypoacusis, professional deafness. Accidental exposure to noise leads to auditory fatigue, which is a transient and reversible phenomenon, but pro...

A known and often used method of insulation is represented by soundproof sponge, having the role of sound absorption and improvement of acoustics. The insulating sponge is used in recording studios, Radio TV studios, music rehearsal rooms, for upholstering acoustic enclosures having the role of acoustic correction. The aim of the study is to improve acoustic characteristics of a room that was originally used as an office and is now used as a music rehearsal room and recording studio, making determinations of noise...

Soil and groundwater resources are natural resources of high ecological value, their protection against chemical degradation and pollution being of major interest and requesting a new methodology based on risk instruments. The need to implement methods for qualitative and quantitative assessment of ecotoxicological risk resides in objective assessment of effects pollutants have on ecosystems, to limit the transfer of xenobiotics to lower and upper levels of the food chain. In this sense, the team of the Environmen...

Usually, only a part of the work capacity is spent in the professional activity, being materialized as products and services made/accomplished within the work process. However, there are also instances, in extreme cases, when total work capacity needs to be engaged, thus an important body reserve being used. Work capacity is represented by the totality of an individual’s (physical, mental, intellectual) possibilities to perform a useful activity at an optimal level of intensity and efficiency. One of the most impo...

Waste is not only an environmental problem, but an economic loss because Romania recycles only a small part of municipal waste. The use of atmospheric pollutant dispersion models has become necessary due to cost-efficiency reasons, given the limitation of fixed measuring points/stations for these pollutants. The paper studies the dispersion of PM10 dust particle pollution in the landfill?s area of influence, depending on wind direction and speed. Simulations are based on measurements of suspended particles, carrie...

Urban noise is affecting an increasing number of people and this is why it is becoming a major environmental issue, being a known fact that it affects all human activities and constitutes a stress factor with negative effects on health. It can affect the population both physiologically and psychologically, having an influence on the elementary activities such as sleep, rest, study and communication. Noise in the environment - a harmful and unwanted sound from the outside - is spreading, both in duration and in geo...

Appropriate protection of the environment, as well as of the most vulnerable environmental factor, water, is impossible without the achievement of a civilization's progress in all its aspects (economic, social, etc.). Also, the lack of adequate economic support may lead to the impossibility of carrying out actions to protect and conserve water resources. Activities from eastern part of the Jiu Valley, constituted as integrated parts of economic growth and development, invariably degrade, through the specificity of...

Economic activities in Jiu Valley, as integrated components of major geographical entities, are constantly degrading the area?s natural heritage by depositing large quantities of waste products resulted from coal extraction and preparation, abandoned buildings and poorly refurbished sites. In this respect, the current paper addresses these areas by identifying and classifying the potentially contaminated/contaminating industrial sites in Eastern Jiu Valley, depending on the type of activity carried out on site. Th...

Jiu Valley represents one of the most important areas for coal mining in Romania, thus industrial development has generated a high level of health and safety at work issues. At work places in mining industry, the staff of the woodworking workshops is exposed to various concentrations of dust, possibly leading, in time, to occupational illnesses. Thus, wood processed in mining unitsпїЅ workshops is utilized for temporary support of coal faces, wrapping underground mining, insulation dams, ventilation doors, etc. Th...