Background: Silver nanoparticles (AgNPs) are among the most effective antimicrobial agents that are used in the medicine and pharmaceutics. During the past decades, metal nanoparticles synthesis through application of the biological methods has increasingly been used, as the biologically synthesized particles are mostly non-toxic as well as effective. Objectives: The main goal for undertaking t...

background: free-living amoebae (fla) are a group of ubiquitous protozoan, which are distrib­uted in the natural and artificial environment sources. the main aim of the current study was to identify the presence of fla in the recreational hot springs of sarein in ardebil province of iran. methods: seven recreational hot springs were selected in sarein city and 28 water samples (four from each h...

introduction management and decision-making issues related to water resources, especially groundwater, which is an important source of fresh water, is the main decisions of a country. according to population growth and increasing demand as well as lack of water, proper management for these resources will be needed. so integrated environmental assessment is one of the best and most effective too...

kajal kaolin deposit is located ~20 km northwest of hashtjin, ardebil province. field evidence and laboratory investigations show that the deposit is an alteration product of ignimbrites, tuffs, and trachy-andesites of eocene age. according to mineralogical data, the major rock-forming minerals include kaolinite, montmorillonite, polygorskite, orthoclase, zeolite (stilbite), quartz, and chalced...

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to determine the effects of pre-germinating of tubers and plant density on yield and some agronomic traits of six commercial potato cultivars, an experiment was carried out in ardebil agricultural research station for two years (2001 and 2002). the experiment was in a split split splot on the basis of completely randomized block design with three replications. pre-germination and non pre-germin...

the iranian poultry sector has experienced many significant structural changes in recent years. such changes may have influenced price dynamics and transmission of shocks through marketing channels especially on retail markets. this paper investigate price transmission, threshold behavior and asymmetric adjustment in poultry sector of ardebil (ar), east azerbaijan (ea) and west azerbaijan (wa) ...