measurement of availability and mobility of heavy metals in river sediments is required in order to understand the behavior of these metals and to prevent potential toxic hazards. leaching column experiments were conducted for four sediment samples to determine the degree of mobility and the distribution of zn, cd, ni, cu, and pb because of an application of spiked heavy metals in sediments. se...

the mobility and bioavailability of trace elements in the agricultural soils are extremely important in assessing the risk of toxicity to the growing plants. a five step sequential extraction procedure (sep) has been employed to study the speciation of as, sb, cr, cu, cd, pb, zn, ni, fe and mn in 18 soil samples neighboring an industrial complex in isfahan, central iran. enrichment factor (ef) ...

We evaluated the effects of 23 insecticides and 9 fungicides on mite Neoseiulus barkeri（Hughes）collected from melon gerbera greenhouses. The nitenpyram, acetamiprid, flufenoxuron, chlorantraniliprole, pyridalyl, acequinocyl, cyenopyrafen, cyflumetofen, pyflubumide, fungicide flutianil＋mepanipyrim had no effect survival fecundity adult females. In contrast, spinosad, spinetoram, abamectin, emame...

Lead is a toxic factor in jarosite residue, and it important to study its release behavior from simulated lead residue (LSJ) predict the stability of impact on environment. This investigated ion behavior, leaching toxicity, stability, migration LSJ during freeze–thaw cycling with thiourea (T-FTC). The lead, iron, sulfate radicals via T-FTC was influenced by several factors. Under specific condi...

UNLABELLED New multiple myeloma (MM) treatments--such as high-dose melphalan therapy plus autologous stem cell transplantation or regimens incorporating bortezomide, thalidomide, and lenalidomide--substantially increase the rate of complete response that is associated with longer patient survival. Thus, maintaining the complete response status by improving the minimal residual disease after ind...

Basic considerations dealing with the biological significance of drug residues and safety evaluation are studied. The specific problem of covalently bound residues is considered from three different points of view. (1) Analytical characteristics clearly distinguish between soluble residues, which deplete relatively fast, and bound material which is slowly eliminated from edible tissues of targe...

The present study aimed to evaluate the larvicidal activity, aquatic and subacute toxicity of anacardic acid in solution encapsulated zein nanoparticles. For potential, different concentrations were tested against young A. aegypti larvae, determining mortality rates at 24, 48 h residual effect between 1 4 weeks. acute ecotoxicology test, Daphnia magna was selected as untargeted environmental or...