Nature - Lead correction. Authors and Affiliations. Neuroepidemiology Unit, Gardner House, Children's Hospital, Boston, Massachusetts, 02115, USA
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THE possible production of 210Pb during weapons testing by the reaction 208Pb (2n,γ) 210Pb was suggested by Peirson. et al.1, who observed unusually high ratios of 210Pb in tropospheric air in ...
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Lead (Pb) has been widely reported in globally polluted soils, and Pb pollutants are one of the top ten types of pollutants that pose the greatest threat to human health, and are considered one of ...
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IT has been known for the past two decades that in the extrusion of lead cable sheaths and pipe on the hydraulic press, the presence of oxides may result in the existence of irregularities in the ...
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This finding suggests that lead contamination is independent of manufacturer and reflects the widespread use of lead-contaminated scrap aluminum in Afghanistan. ... Nature. 2023;619:674.
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Lead is important when it comes to an industrialized economy. From small electronics (watches) to train do have lead metal. Uses of lead metal. (PB 82) 1. Corrosion resistance.
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The scattering cross-section as a function of the neutron energy was determined by measuring the number of neutrons scattered out of a collimated beam into a boron trifluoride counter placed near ...
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IN a recent publication Patterson1 shows that the measured isotopic abundances of leads from five different meteorites and recent terrestrial ocean sediments are simply related. From this fact ...
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CONSIDERABLE confusion persists in the literature1,2 regarding the distinction between lead hydroxide and basic lead carbonate, principally because the latter is often encountered in reactions ...
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The lead concentrations in soil, vegetables for all treatments and water samples ranged from 1.038–10.478, 0.09346–9.0639 mg/kg and 0.036–0.26448 mg/L, The concentration of lead in soil ...
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Hazard ratios (HRs) and 95% confidence intervals (CI) for urinary lead and blood lead concentrations in relation to all-cause mortality were estimated using a weighted Cox regression model.
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There is clear evidence of lead pollution caused by motor vehicles close to busy roads2–4, and the three-fold increase in lead concentrations in snow from the Greenland ice-cap during the past ...
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Lead is an element of the periodic table with an atomic number of 82. Lead (Pb) is a metal which has been used by humans for centuries dating back to 7000 BC. The element is present in various minerals in minute quantities excluding …
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AT the eighteenth session of the International Geological Congress, held in London last summer, after being postponed from 1940, the proceedings of Section F were devoted to a consideration of the ...
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IF the isotopic ratios [206Pb/204Pb]0, [207Pb/204Pb]0, and [208Pb/204Pb]0 of primeval lead are known, the time t of formation of ore of lead (the present time = 0) and the present-day atomic ...
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THE history of lead mining in the Tyne, Wear and Tees areas during the eighteenth and nineteenth centuries was described by Dr. A. Raistrick before the Durham Philosophical Society on March 15.
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Lead, a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic table. Lead is very malleable, ductile, and dense and is a poor conductor of electricity. Known in antiquity and believed by the alchemists to be the …
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A too brief reference has been made to the physical properties of lead and that of its alloys, and much recent work has been overlooked, probably due to the aim of the author in making the work ...
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Lead occurs naturally as a combination of four isotopes. Lead consists of Four naturally occurring isotopes: 204 Pb, 206 Pb, 207 Pb and 208 Pb. Lead has an atomic number of 82 and is a grey metal. It has a melting …
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THERE have been several attempts1–6 to identify the sources of lead in the air and vegetable or animal tissue by analysis of stable isotopes. Blood sampling is the easiest means of conducting a ...
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LEAD azide is still prepared by using, in principle, a method first described by Curtius1. This method involves reacting a soluble inorganic azide, preferably sodium azide, with a soluble lead ...
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Lead commonly occurs in mineral deposits along with other base metals, such as copper and zinc. Lead deposits are broadly classified on the basis of how they are formed. Lead is produced mainly from three types of deposits: sedimentary …
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The Nature Index tracks the affiliations of high-quality scientific articles. Updated monthly, the Nature Index presents research outputs by institution and country. Use the Nature Index to ...
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TECHNIQUES for counting airborne lead particles would be useful in studies of air pollution. No available technique detects lead particles less than 5µ. in diameter, and particles larger than ...
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Lead is found in nature, rarely in pure form but in ores with other metals — the most abundant one in the Earth's crust being galena (PbS). Natural formation of lead occurs by …
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Transvenous lead extraction (TLE) is a critical procedure for managing complications associated with cardiac implantable electronic devices (CIEDs), such as pacemakers and defibrillators. As the ...
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THE complex formation between lead (II) and acetato ions has been examined at 25° C with 3 M (Na)ClO4 as the ionic medium. The equilibrium constants were determined by potentiometric titrations ...
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Nature Communications - The study examines how land property rights impact land use efficiency (LUE) globally, based on the SDG 11.3.1 indicator. ... Secure LPRs lead to higher investment and ...
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Lead (Pb) is a potent and pervasive environmental contaminant and neurotoxicant with profound and enduring effects on human health. Children are especially vulnerable to Pb poisoning due to their ...
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