phytoplanktons are the first bio- indicators of pollution in aquatic ecosystems. phytoplankton assemblage and aquatic ecosystems are always influenced by environmental factors therefore these environmental changes and threats must be understood in any ecosystem. phytoplankton are inexpensive and readily available bio- indicators. in the present study, phytoplankton were used to study the sefid ...

In this study, a bioremediation approach was evaluated for the decontamination of an aquifer affected by release organohalides industrial landfill. After preliminary physicochemical and microbiological characterization landfill groundwater, stimulation natural organohalide respiration addition reducing substrate (i.e., molasse) tested both at microcosm field scales, placement anaerobic permeabl...

Abstract To investigate the role of cow dung in soil reclamation and bio assimilation along with accumulation heavy metals earthworm (P. posthuma) (N=900) earthworms were used treatment groups CD-soil mixture different proportion designed. Nonlethal doses lead acetate cadmium chloride added groups. Mature P. posthuma released each experimental pot maintaining favorable conditions. The pH, carbo...

in this study, a bacterial species which could remove lead from wastewater was isolated from lead contaminated soil prepared in the laboratory. based on the biochemical and morphological characterization the bacteria were identified as brevundimonas vesicularis. the biosorption potentiel of powdered dry biomass of b. vesicularis was investigated by batch adsorption experiments. it was found tha...

Nanotechnology is a rapidly growing field and has secured prominent rank in medicinal field. They find applications cancer therapy, cell bio-imaging, treatment of neurodegenerative diseases, targeted drug delivery at or tissue level also the regeneration tissues different organs. NPs like liposomes dendrimers are widely used as nanocarriers. can be successfully employed due to their specific pr...

Chick embryos, chick embryo fibroblasts, and Rous sarcoma virus-transformed chick embryo fibroblasts contain a factor that preferentially blocks the accumulation of DNA-directed RNA polymerase II transcripts. The factor was detected by inhibition of transcription in a cell-free assay system utilizing partially purified RNA polymerase II from calf thymus, soluble factors from HeLa cells, and a p...

High Antarctic coastal marine environments are comparatively pristine with strong environmental gradients, which make them important places to investigate biodiversity relationships. Defining how different environmental features contribute to shifts in beta-diversity is especially important as these shifts reflect both spatio-temporal variations in species richness and the degree of ecological ...

In mammalian host cells staphylococcal peptidoglycan (PGN) is recognized by Nod2. Whether PGN is also recognized by TLR2 is disputed. Here we carried out PGN co-localization and stimulation studies with TLR2 and Nod2 in wild type and mutant host cells. To exclude contamination with lipoproteins, polymeric staphylococcal PGN (PGN(pol)) was isolated from Staphylococcus aureus Δlgt (lacking lipida...

In order to investigate the effect of different levels of nitrogen and bio-fertilizers on yield of canola plants in Qazvin, Iran, a split-plot design was conducted on the base of randomized complete block design with four replications. Treatments included 3 levels of nitrogen (0, 75 and 150 kg ha-1) and bio-fertilizers on four levels (no inoculation, Azotobacter, Azospirillum and a combination ...