the production and use of synthetic nanoparticles is growing rapidly, and therefore the presence of these materials in the environment seems inevitable. titanium dioxide (tio2) presents various possible uses in industry, cosmetics, and even in the treatment of contaminated environments. studies about the potential ecotoxicological risks of tio2 nanoparticles (nano-tio2) have been published but...

wetlands are often considered sinks for contaminants, and aquatic plants have been shown to play important roles in wetland biogeochemistry through their active and passive circulation of elements. in this research, in order to evaluate the concentration level of heavy metals released by the urban, industrial and agricultural activities at the margin of the rivers flowing into anzali lagoon, as...

recently, some natural products have been used in the fields as alternative to synthetic compounds, to minimize the negative impacts to the environment. this study aimed to verify the effects of neem-based bio-pesticide in causing acute toxicity for a fish and chronic toxicity for a microcrustacean. to this end, danio rerio and daphnia magna were exposed to various concentrations of a neem-base...

the production and use of synthetic nanoparticles is growing rapidly, and therefore the presence of these materials in the environment seems inevitable. titanium dioxide (tio2) presents various possible uses in industry, cosmetics, and even in the treatment of contaminated environments. studies about the potential ecotoxicological risks of tio2 nanoparticles (nano-tio2) have been published but ...

aquatic plants have a major influence upon other aquatic organisms, by altering both water chemistry and spatial structure of the habitat in shallow water bodies. some of them, such as stratiotes aloides l., may suppress algal growth. but how aquatic plants would ultimately influence the heterotrophic community and the aquatic ecosystem as a whole is far from clear. our microcosm-based study de...

insects with over 30,000 aquatic species are known as very successful arthropods in freshwater habitats. some of them are applied as biological indicators for water quality control, as well as the main food supply for fishes and amphibians. the faunistic studies are the basic step in entomological researches; the current study was carried out emphasizing on the fauna of aquatic insects in karaj...

background: pain and limited range of motion (rom) are the crucial subsequent results of joint hemorrhages in individuals with bleeding disorders and hemophilia. exercise interventions are particularly recommended in treatment of such patients. the purpose of this study was to detect the influences of conventional exercise therapy and hydrotherapy on the knee joint complications in patients wit...