نتایج جستجو برای: lead analysis
تعداد نتایج: 3087401 فیلتر نتایج به سال:
Abstract A shipwreck of the 3rd/2nd decade BC found near Comacchio (prov. Ferrara, Italy) in 1980 contained not only well-preserved technical equipment and commercial goods but also 102 Roman lead ingots. Since then, origin ingots has been intensively discussed. Domergue et al. (2012) connected epigraphic elements with isotope analyses favored southeastern Spanish ore mines being source metal. ...
Lead isotope and portable energy-dispersive X-ray fluorescence spectrometry were applied to a small group of Hellenistic lead objects from Tell Iztabba (Beth Shean, Israel). The market weights sling bullets this short-lived Seleucid-founded site analysed in order understand their production process the provenance raw materials. are pure lead, its isotopic signature suggests that was produced La...
Lead poisoning of wild birds by ingestion lead ammunition occurs worldwide. Histopathological changes in organs lead-intoxicated are widely known, and concentration each organ is measurable using mass spectrometry. However, detailed localization at the suborgan level has remained elusive lead-exposed birds. Here we investigated experimentally ducks kites laser ablation inductively coupled plasm...
A new organic-inorganic hybrid, [Pb(2)I(4)(C(4)H(13)N(3))](n), was obtained by the reaction of C(4)N(3)H(10) and PbI(2) at room temperature. The structure is a three-dimensional polymer resulting from the association of PbI(6) octa-hedra and a mixed lead organic-inorganic PbI(4)(C(4)N(3)H(13)) coordination polyhedron. Both Pb atoms, two I atoms and one N atom lie on a mirror plane. N-H⋯I hydrog...
We studied the growth and ordering of a Pb layer deposited on Cu(001) at 150 K. Contrary to the case of adsorption of Pb at room temperature, islands readily form. These islands order in a high-order commensurate structure of symmetry ( √ 61× √ 61)Rtan (
introruction khawf in(iran)-herat and mazaresharif and shirkhan bandar in (afghanistan)-dushanbe in (tajikistan)_(kirgizstan)-kashghar in(china) project railway network is under construction that it is as a significant corridor for revitalizing silk road corridor in the region .at the present there are three different gauge in the region central asia with 1,520 mm gauge and turkey-islamic repu...
Atomically uniform Pb films are successfully prepared on Si(111), despite a large lattice mismatch. Angle-resolved photoemission measurements of the electronic structure show layer-resolved quantum well states which can be correlated with dramatic variations in thermal stability. The odd film thicknesses N = 5, 7, and 9 monolayers show sharp quantum well states. The even film thicknesses N = 6 ...
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