Introduction: Polycyclic aromatic hydrocarbons (PAHs) are one of the most significant current environmental issues. Phenanthrene and naphthalene adsorption at activated carbon beds prevent the release of these compounds into the environment. The objective of this research was to compare the amounts of phenanthrene and naphthalene adsorption at activated carbon beds in the n-hexane solution. . ...

Background and purpose: 2, 4-dinitrophenol (2,4-DNP) is categorized as one of the priority pollutants that is used in pharmaceutical and chemical industries, pesticides, etc. In this study we aimed at investigating the biodegradation of 2,4-DNP by immobilized laccase on nano-porous silica beads. Materials and methods: An experimental study was conducted in which the enzyme was chemically cro...

Background and purpose: Cadmium is a very toxic metal that have adverse effects on human health and aquatic environments even at low concentrations, therefore, efforts should be made to eliminate this metal from aquatic ecosystem. The aim of this study was to investigate the efficacy of L-cysteine functionalized single-walled carbon nanotubes in removing cadmium from aqueous environments. This ...

Pollution of aquatic environments by toxic trace metals has been taking place because of discharge of untreated effluents from many industrial processes. Conventional methods used for removing dissolved heavy metal ions from wastewaters have significant disadvantages including incomplete metal removal, requirements for expensive equipment, high energy requirements and generation of toxic sludge...

Introduction and Purpose: The swimming start is very important for achieving better results in competitions. The Purpose of this study was to compare the effects of two plyometric training techniques both in aquatic and on land in two start techniques (grab and track) of butterfly swimming in Elite male adolescent Swimmers.Methodology: 20 elite male swimmers divided into two groups of plyome...