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His "reactor" was a bored-out block of lead, and he used lithium from $1,000 worth of purchased batteries to purify the thorium ash using a Bunsen burner. [3] [4] Hahn ultimately hoped to create a breeder reactor, using low-level isotopes to transform samples of thorium and uranium into fissile isotopes. [5]
Lead may be found in food when food is grown in soil that is high in lead, airborne lead contaminates the crops, animals eat lead in their diet, or lead enters the food either from what it was stored or cooked in. [111] Ingestion of lead paint and batteries is also a route of exposure for livestock, which can subsequently affect humans. [112]
“This study analyzed a nationally representative sample of U.S. adolescent e-cigarette use to examine whether urine metal levels (i.e., cadmium, lead and uranium) differed by vaping frequency ...
A typical cobalt-60 capsule, comprising: (A) An international standard source holder (usually lead), (B) a retaining ring, and (C) a teletherapy "source" composed of (D) two nested stainless steel canisters welded to two (E) stainless steel lids surrounding an (F) internal shield (usually uranium metal or a tungsten alloy) that protects a (G) cylinder of radioactive source material.
Exposure to lead in gasoline during childhood resulted in many millions of excess cases of psychiatric disorders over the last 75 years, a new study estimates. Lead was banned from automobile fuel ...
Scientist Harry Daghlian suffered fatal radiation poisoning and died 25 days later after accidentally dropping a tungsten carbide brick onto a sphere of plutonium, which was later (see next entry) nicknamed the demon core. The brick acted as a neutron reflector, bringing the mass to criticality. This was the first known criticality accident ...
After about four months of receiving the injections, the kids were given high levels of peanut or other food allergens—much higher than doses they might encounter by accidentally taking a bite ...
a protective internal shield (usually uranium metal or a tungsten alloy), and a cylinder of radioactive source material ( caesium-137 in the Goiânia incident, but usually cobalt-60 ) The Goiânia accident [ɡojˈjɐniɐ] was a radioactive contamination accident that occurred on September 13, 1987, in Goiânia , Goiás , Brazil, after an ...