Together, the world’s eight acknowledged nuclear powers—the United States (US), Russia, United Kingdom (UK), France, China, India, Pakistan, and the Democratic People’s Republic of Korea (North Korea)—have amassed an arsenal of almost 30,000 nuclear weapons since 1945. In addition, Israel is believed to be a nuclear power while Iran (and possibly Syria as well) is also suspected of developing n...

In recent years, the United States, along with many other countries, has significantly increased its detection and defense mechanisms against terrorist attacks. A potential attack with a nuclear weapon, using nuclear materials smuggled into the country, has been identified as a particularly grave threat. The system for detecting illicit nuclear materials that is currently in place at U.S. ports...

The article deals with an accidental situation development final stage accompanied by a powder explosion (combustion) incoming to nuclear weapon part or dirty bomb and fissile materials dispergation discharge in the air. Formulas for impurity level express assessment fallen earth surface due dry settling stack effluents washout precipitates are given.

OBJECTIVE To estimate the strength of a suspected causal association between fearfulness and carrying a lethal weapon among urban middle-school students, while holding constant other suspected risk factors. DESIGN A prospective study of an epidemiological sample assessed at baseline in 1992 and 1 year later, with relative risk estimates derived from the conditional form of the multiple logist...

An algorithm was developed that uses measured isotopic ratios from fission product residue following the detonation of a high-enriched uranium nuclear weapon to compute the original attributes of the nuclear material used in the device. The specific attributes assessed are the uranium isotopics (considering U, U, U, and U) and the type of enrichment process used to create the material (e.g., ga...

Contamination of food by chemicals can result from their use on agricultural commodities; accidents or misuse during food handling and processing; nucler weapon testing and operation of nuclear power plants; and disposal of industrial chemicals or by-products with subsequent dispersal into the environment. The Food and Drug Administration (FDA), as the Federal agency mainly responsible for eval...

GENERAL CHARACTERISTICS OF energy is initially in the form of kinetic THERMAL RADIATION energy of the weapon debris. This kinetic energy is also absorbed by the air 7.01 One of the important difat a slightly later time \(§ 2.109) and ferences between a nuclear and a conserves to further heat the air. The heated ventional high-explosive weapon is the air, which constitutes the fireball, in turn ...