نتایج جستجو برای: pb stress
تعداد نتایج: 474134 فیلتر نتایج به سال:
The hadronic particle production data from relativistic nuclear Pb–Pb 158 A GeV collisions are successfully described within the chemical non-equilibrium model, provided that the analysis does not include Ω and Ω abundances. We show that there is a subtle influence of the Coulomb potential on strange quarks in quark matter which is also seen in our data analysis, and this Coulomb effect confirm...
BACKGROUND Nuclear factor-erythroid 2 p45 related factor 2 (Nrf2) is a primary transcription factor, protecting cells from oxidative stress by regulating a number of antioxidants and phase II detoxifying enzymes. Dietary components such as sulforaphane in broccoli and quercetin in onions have been shown to be inducers of Nrf2. Piper betle (PB) grows well in tropical climate and the leaves are u...
In this study, flat piezoelectric microcantilevers were fabricated under low-stress Pb(Zr0.52Ti0.48)O3 (PZT) film conditions. They were analyzed using the Raman spectrum and wafer curvature methods. Based on the residual stress analysis, we found that a thickness of 1 μm was critical, since stress relaxation starts to occur at greater thicknesses, due to surface roughening. The (111) preferred ...
blubber of Cape fur seals Arctocephalus pusillus pusillus off the Eastern Cape coast of South Africa
The concentration of heavy metals (Cd, Cu, Pb, Ni and Zn) and organochlorine contaminants (PCBs, DDT, DDE and DDD) in the blubber of 12 adult male Cape fur seals, Arctocephalus pusillus pusillus, inadvertently caught in trawl nets off the Eastern Cape coast of South Africa during commercial fishing operations between May 1993 and October 1994, was investigated. The median and range of concentra...
Trace element composition in plant biomass could be used as an indicator of environmental stress, management practices and restoration success. A longitudinal study was conducted to compare Pb, Cd, and Cu content in seagrass Syringodium filiforme collected at a former bombing range in Puerto Rico with those of a Biosphere Reserve under similar geoclimatic conditions. Trace elements were measure...
Abstract The psychological phenomenon of Parental Burnout (PB) results from an imbalance between continuous exposure to chronic parenting stress and available coping resources. study’s aim was examine relationships mothers’ perceived burden treatment PB, their ability utilize emotion work (EW) as a resource. Ninety-eight Israeli mothers (46 had children with special needs disabilities—W-SND, 52...
The presence of the single metals (Cd, Pb, Cu, Zn) induces ROS (reactive oxygen species) production and causes oxidative stress in plants. While applied in two-element combinations, trace metals impact organisms in a more complex way. To assess the resultant effect we treated the pea grown hydroponically with the trace metals in variants: CuPb, CuCd, CuZn, PbCd, ZnPb, ZnCd in concentrations of ...
Lead (Pb) is a non-essential element; however, plants uptake it from soils rich in Pb. Soybean [Glycine max (L.) Merr.] an important legume crop, and Pb toxicity exerts negative impacts on its growth yield. This study investigated the role of foliar-applied loquat (Eriobotrya japonica Lindl.) leaf extract improving morphological, physiological, biochemical traits soybean under toxicity. were ex...
Abstract This study goal to evaluate the effects of different concentrations lead (Pb) and silver (Ag) on germination, initial growth anatomical alterations Lactuca sativa L. Plants use various mechanisms reduce impacts caused by anthropic action, such as xenobiotic elements soils water contaminated heavy metals. These metals were supplied nitrate following treatments established: control for b...
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