In the present study, the potential adverse effects of heavy metals in the soil of Ahvaz oil field were evaluated. 9 soil samples were collected and chemical digestion was performed. Global standard methods was used to collect samples and measure metals. Heavy metals Ni, Cd, Pb, Zn, Cu were measured. and geochemical indicators were evaluated. […]
Soil properties such as particle size distribution, plasticity, compressibility, or strength of the soil always affect the geotechnical design in construction. The knowledge of contaminants and their extraction on natural adsorbents (clay soils) with various treatments, and extractants is essential for geo-environmental engineering applications. To address these challenges, sepiolite as a widely used environmental natural […]
Heavy metals cause many problems in living organisms. Using living organism as a bio indicator is a useful way to show environment conditions. In this paper, bioaccumulation of heavy metals in house sparrow feather was studied. The house sparrow is distributed in many parts of the world. The house sparrow lives in urban and rural […]
Organic wastes constitute a large part of urban solid wastes, which are the main source of environmental problems in waste management, including leachate. A suitable method for organic waste management is to use anaerobic digesters to produce biogas. However, in many cases, the low efficiency of biogas production prevents the use of this method. In […]
The present descriptive cross-sectional study was conducted by altering the type of blowers in the wastewater treatment system of Abuzar hospital in Ahvaz during the first and second quarters (6 months). In every month, inlet raw wastewater, aeration tank one, and effluent were sampled in one week (Saturday-Friday), which resulted in harvesting a total of […]
This study provides a practical solution to manage non-hazardous waste and aid the environment. The largest group of non-hazardous waste is called municipal solid waste (MSW) which can be effectively used as an alternative material in civil projects. In this research, as an alternative to traditional modification methods of soil which causes global warming, the […]
Developing a positive health and safety culture is important if high standards of health and safety are to be achieved and maintained. There is a limit to the health and safety performance an organization can achieve without addressing the contribution which human factors have to play in eliminating occupational accidents . The objective of this […]
The purpose of this research is to analyze the risk of ammonia release in the cold storage of one of the large food companies in Mashhad. This is an applied research that was done using FTA technique and fuzzy logic. Fuzzy logic was used to weight experts’ opinions (Delphi panel). In this study, to model […]
The Zayandeh-Rood River (Isfahan Province, Iran) is of vital importance as a water source for various purposes, but it is facing adverse effects from human activities. This study focused on the surface sediment of 21 stations along the river to assess the concentration of potentially toxic elements (PTEs) and their environmental risk using the Geoaccumulation […]
The ever-increasing growth of the population and their concentration in cities has destructive and often catastrophic effects on natural habitats and human life and exposes cities to painful crises, including environmental and human destruction, which has caused humans to turn to technologies emerging to reduce environmental risks. Blockchain is a new and revolutionary technology in […]
Oxidative coupling of thiols to the corresponding symmetrical disulfides were performed in the presence of silica gel supported tributylammonium fluorochromate(VI), (TriBAFC), and tributylammonium chlorochromate(VI), (TriBACC). Silica gel supported TriBAFC and TriBACC are versatile reagents for the effective and selective oxidation of organic substrates, in particular of thiol, under mild conditions. Disulfides are also key intermediates […]
The use of mathematical methods for risk assessment is an important instrument to control health risks. This research is performed to discuss the status of health risks of Larestan city. For this reason, the fuzzy Topsis method was used and firstly, four health risks insights including (safety insight, safety performance, comprehend risk, and evaluation risk) […]
