Seagrass, systems export significant amounts of their primary production as large detritus (i.e. macrophytodetritus). Accumulations exported macrophytodetritus (AEM) are found in many areas coastal environment. Dead seagrass leaves often a dominant component these accumulations, offering shelter and/or food to numerous organisms. AEM particular habitats, different from donor habitats meadow, ke...

The content and the isotopic composition of lead (Pb) were studied in a peat deposit on the ridge of the Brdy Hills, in the vicinity of the Príbram metallurgical works, in the Czech Republic. Quadrupole ICP MS was employed to determine the elemental composition and (206)Pb/(207)Pb and (208)Pb/(206)Pb isotope ratios. The individual layers were dated using alpha spectrometric measurement of the (...

The effect of arbuscular mycorrhizal fungus on the subcellular compartmentalization and chemical forms of lead (Pb) in Pb tolerance plants was assessed in a pot experiment in greenhouse conditions. We measured root colonization, plant growth, photosynthesis, subcellular compartmentalization and chemical forms of Pb in black locust (Robinia pseudoacacia L.) seedlings inoculated with Funneliformi...

Root and shoot lead concentrations and the impact of chelating agents on these were investigated in two populations of the novel metallophyte Matthiola flavida. Plants were exposed in hydroponics to Pb(NO3)2, supplied alone, or in combination with citric acid, or EDDS. When supplied at concentrations expected to bind about 95% of the Pb in a solution containing 1-μM Pb (1000 μM citrate or 3.1 μ...

In this paper, we will discuss results on coherent and incoherent J/ψ photoproduction in ultra-peripheral Pb-Pb collisions at √ sNN = 2.76, as well as preliminary results on exclusive J/ψ and two-photon production in ultra-peripheral p-Pb collisions at √ sNN = 5.02 TeV. Results on four-pion production in ultra-peripheral Pb-Pb collisions will also be given. Finally, the prospects for other UPC ...

Global event observables are of fundamental importance in characterizing the properties of the strongly interacting medium created in heavy-ion collisions. The ALICE experiment at LHC measured charged particle multiplicity distributions in Pb-Pb collisions at √ sNN = 2.76 TeV in a wide pseudo-rapidity range (−5 < η < 5.5) exploiting different techniques. The production of high transverse moment...

fifty-nine samples of washed and unwashed leaves of 4 species of plants in tehran and 24 similar samples of the suburb (as control) were analyzed for pb content. a significant difference was seen between pb contents of washed and unwashed urban samples, while no significant difference was observed between the control samples. the mean pb contents of the urban suburb samples were also significan...

In situ soil amendments can modify the Pb bioavailability by changing soil Pb speciation. Urban soils from three vegetable gardens containing different total Pb concentrations were used. The study evaluated how compost amendment and aging of soil-compost mixture in situ affected the following: (i) soil Pb speciation in the field and (ii) change of soil Pb speciation during an in vitro bioaccess...