نتایج جستجو برای: pb
تعداد نتایج: 36420 فیلتر نتایج به سال:
MCL01 64/F PB 7 IVB Yes NA PR NA MCL02 84/F PB 8 IVB No 94 new Dg none MCL03 66/M PB 6.95 IVB No NA new Dg del11q MCL04 60/M PB 7.64 IVB No NA new Dg del17p MCL05 57/M PB 5.54 IVA No 47 new Dg none MCL06 57/M PB 5.65 IVA No NA new Dg none MCL07 76/M PB 8.5 IVB No 37 new Dg NA MCL08 68/M PB 8.5 IVB No 70 new Dg del17p, del11q MCL09 41/M PB 5.38 IVA No 17 new Dg none MCL10a 71/M PB 10 IVA Yes 50 ...
OBJECTIVES To test a simple procedure for preparing samples for measurement of lead in blood plasma (P-Pb) and whole blood (B-Pb) by inductively coupled plasma mass spectrometry (ICP-MS), to measure P-Pb and B-Pb in lead workers and controls, and to evaluate any differences in the relation between B-Pb and P-Pb between people. METHODS P-Pb and B-Pb were measured by ICP-MS in 43 male lead smel...
Phytoremediation is a potential cleanup technology for the removal of heavy metals from contaminated soils. Bidens maximowicziana is a new Pb hyperaccumulator, which not only has remarkable tolerance to Pb but also extraordinary accumulation capacity for Pb. The maximum Pb concentration was 1509.3 mg/kg in roots and 2164.7 mg/kg in overground tissues. The Pb distribution order in the B. maximow...
In the String Percolation Model [1] the particle density is proportional, once the colour reduction factor is taken into account, to the average number of participants ρ ∝ NA; the normalized particle density at mid-rapidity is related to the gluon distribution at small Bjorken-x, ρ ∝ exp ; and the dense-dilute separation scale decreases, from energy conservation, linearly with Y , ∆0 = −αY with...
Alluvial soils are reservoirs of metal contaminants such as Pb that originate from many different sources and are integrated temporally and spatially through erosional and depositional processes. In this study the source, lability and solubility of Pb were examined in a range of alluvial soils from the middle and lower River Trent and its tributary the River Dove using Pb isotope apportionment ...
This study aims at investigating the impacts of Pb on freshwater biofilms with a pollution-induced community tolerance (PICT) approach using a recently developed short-term toxicity test based on β-glucosidase activity to measure biofilms' tolerance to Pb. We first investigated more closely the influence of the total suspended solids (TSS) concentrations of biofilm suspensions used for short-te...
Leaded gasoline in Taiwan was gradually phased out from 1983 to 2000. However, it is unclear whether unleaded gasoline still contributes to atmospheric lead (Pb) exposure in urban areas. In this study, Pb isotopic compositions of unleaded gasolines, with octane numbers of 92, 95, 98, and diesel from two local suppliers in Taipei were determined by multi-collector inductively coupled plasma mass...
The Dutch cities Utrecht and Wijk bij Duurstede were founded by the Romans around 50 B.C. and the village Fijnaart and Graft-De Rijp around 1600 A.D. The soils of these villages are polluted with Pb (up to ~5000 mg/kg). Lead isotope ratios were used to trace the sources of Pb pollution in the urban soils. In ~75% of the urban soils the source of the Pb pollution was a mixture of glazed potsherd...
The effect of lactation on the pharmacokinetics of phenobarbital (PB) after delivery was studied in female rats. Non-pregnant animals received PB 20 mg/kg/day twice for 6-7 days before mating, during pregnancy and after delivery. Chronic PB did not significantly influence changes in the body weight of rats after delivery. On the first post-delivery day, the plasma PB concentration in the PB-tre...
Past changes in seawater lead (Pb) isotopes record the temporal evolution of anthropogenic pollution, continental weathering inputs, and ocean current transport. To advance our ability to reconstruct this signature, we present methodological developments that allow us to make precise and accurate Pb isotope measurements on deep-sea coral aragonite, and apply our approach to generate the first P...
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