Water is a unique and irreplaceable natural resource of limited quantities and uneven spatial and temporal distribution. All life forms and all human activities are more or less related to water, clearly showing the importance of the relationship with water. It is a necessary resource in households as drinking water, washing and food preparation, in agriculture for irrigation, and in industry it plays an important role in almost all industrial processes. Economic development and urbanization lead, on the one hand, to a large increase in water demand, and on the other hand to the threat to water resources and the aquatic environment. Water can thus become a limiting factor in development, a threat to human health and the sustainability of natural ecosystems. Until recently, there was a centuriesold illusion of water inexhaustibility, and the concept of minimum investments for the purification of used water and water protection in general appeared. Much of the water used is not purified before it is discharged into watercourses and thus pollutes the water mass and reduces the resources of drinking water. Providing enough drinking water is one of the world's most important issues today. Therefore, it is especially important for every society to balance these relations and devise policies and strategies for the regulation, exploitation and protection of water resources.

Lifestyles develop throughout the life, but adolescence and early youth are important stages in acquiring healthy lifestyles habits. This is also vulnerable period for substance misuse, worsened diet habits and sedentary lifestyles linked to academic activities and responsible for developing non communicable diseases (NCD). Goal of the article is to analyse lifestyles habits and risk factors for developing NCD among students of health sciences. Study is conducted at the University Apeiron, Faculty of Health Sciences among students from first to fourth years of study. Specially designed questionnaire was prepared and distributed on line, anonymously and voluntary fulfilled by students. Every fifth student is smokers, 5,1% consume alcohol daily, more males (12,1%) than females (2,9%) (p0,05). Majority of males (42,2%) consumed alcohol drinks in one occasion during previous month, statistically more than females (21.2%) (p0,05). More than two third of students eat fruits and vegetables daily and one third have regular meals. Moderate physical active are 42,3% of students, and physical inactive are more females than males (p0,05). Risk factors for NCD have to be prevented with supportive policies in school environment and community. Students of health sciences should be a positive model of changing risk habits for NCD and saving future quality of life.

Medicinal plants play a major role in the development of human cultures. Medicinal plants are a rich source of phytochemical compounds, which have proven therapeutic efficacy throughout the ages. The therapeutic efficacy is attributed to those secondary biologically active compounds. Plants have provided the human being with all his needs of food, drink, and clothing. In addition they are an important source for the treatment of many diseases being the basis of the science of alternative medicine, In recent times, the area cultivated for these medicinal plants has increased, and scientific research has tended to study the effectiveness of these plants in treating many diseases. Most plants have an effective effect as an antioxidant, anti-hyperlipidemia, hypoglycemic, antihypertensive as well as for cardiovascular diseases and strokes. The study aims to provide important data on the extent to which some medicinal plants are used in the treatment of various diseases.

Self-rated health is associated with health behaviour and socio-demographic and socio-economic conditions on the way that health risks and poor socio-economic status determine poor self-rated health. The aim of the study was to determine self-rated health among students, perceive health behaviour risk and association with socio-demographic and socio-economic characteristics of students. Methods: Study is conducted as a cross-sectional study among students of health sciences in autumn semester 2022. Year. Specially designed questionnaire was constructed based on international guidelines. Anonymously filling out an on line formed questionnaire by voluntary singing on university web site. Results: More than three quarter of students perceived their health as a good and no one perceived health as a poor. Most students perceived their health as good (83,2%), mainly students with a technical background and those who are living in good socio-economic conditions (89,0%) (p0,05). The most frequent health risks among students are lack of physical activity (44,5%) and less than six hours for sleep and rest (43,8%). More than a third of students perceived fear, nervousness and tension (34,3%), a lack of time for friendship and family (33,6%) and irregular diet (31,4%). Every seventh student perceived overweight and obesity. Students who are living in poor socio-economic conditions perceived more health risks as well as those who don’t have medical background and who are employed. More students in urban area perceived mental problems than those in rural areas. Conclusion: Students are mainly perceived their health as a good and have health risks which will be reduced through health promotion in university educational programmes.

Uncontrolled acetylene release during production processes, transportation, or storage can lead to explosions and detonations endangering safety of people and material assets. This paper investigates the impact of accidental release of acetylene gas in surrounding areas. The ALOHA software has been used in this paper to modelling of acetylene release. The modelling was performed for an accidental release of 2,000 kg acetylene from direct source for one minute. F or a typical average atmospheric condition in location, this accidental acetylene release would cause a red zone of 197 m (15,000 ppm) and yellow zone of 483 m (2,500 ppm) to downwind from the source. Inadequate storage can lead to accidental situations and negative impact on people and the environment.

The municipal solid waste (MSW) landfill is recognized as an anthropogenic source of air pollutants that can have a negative impact on human health and the environment. Workers who work at the MSW landfill may be exposed to risk due to the inhalation of substances such as volatile organic compounds (VOCs). Although VOCs account for 1% in landfill gas, they are important because of the high level of toxicity associated with them. Regular monitoring of air quality and risk assessment provides important information in protecting the health of workers at the landfill. This study focuses on a health risk assessment related to VOCs (benzene, toluene and xylene) exposure via inhalation for workers at a landfill Banja Luka, Republic of Srpska, Bosnia and Herzegovina. Additionally, cancer risk and non-cancer risk of benzene, toluene and xylene of workers indicated that occupational exposures were above recommended standard. This implies that landfill workers are exposed to a significant health risk associated with inhalation exposure to VOCs

Waste disposal is just one of the segments in solid municipal waste management system. During the entire life cycle of waste, starting from waste generation, through storage, collection, transport, recycling, treatment and disposal, several different pollutants are emitted. By disposing solid waste, non-road mobile machinery (NRMM) emits various pollutants into the air such as CO2, CO, NMVOC, PM, PAHs, heavy metals, etc. These substances can pose certain problems for human health and the environment. The subject of this study is the calculation of air emissions of CO2, CH4, N2O, NMVOC, PM10, CO, Cd, Cr and PAHs (chrysene and benz[a]anthracene) from NRMM which are included in the activities of receiving and disposing of waste at the Banja Luka landfill. The study evaluates the emission of pollutants using the EEA guidelines for the assessment of the emission of pollutants into the air, based on the consumption of diesel fuel during the year. This study, which is based on the calculation of NRMM emissions at the Banja Luka landfill, should serve as an example not only to other landfills but also to sectors that use NRMM on the importance of keeping track of pollutant emissions. The goal is to look at these emissions and introduce changes and improvements in this sector by replacing old NRMMs with new ones, optimizing operation, using diesel of satisfactory quality, etc.

. Water samples were collected near the thermal power plant and coal mine (Gacko, Republic of Srpska, Bosnia and Herzegovina) and analyzed to measure the concentration of 33 parameters (pH, temperature, electrical conductivity, alkalinity as CaCO 3 , total hardness as CaCO 3 , total solids, total suspended matter, dissolved oxygen, oxygen saturation, biological oxygen demand, chemical oxygen demand with permanganate, ammonia, nitrite, nitrate, P, PAH, PCBs, phenolic index, mineral oils, detergents, content of As, Cd, Cr, Fe, Mn and Pb, sulfates, chlorides, fluorides, aerobic organotrophs, total coliforms, fecal coliforms and fecal streptococci). Determined average mean pH values and EC are within the reference values for class I surface water quality. The surface water in the study area is alkaline, with a mean pH value of 8.01. Depending on the location, other analyzed parameters correspond from I to V water quality classes. The ERI for As, Cd, Cr and Pb is low and for Mn is appreciable. The RI of the surface water in location 1 and 2 were moderate. In other locations, risk coefficients are low.