Strontium-90 is considered a cancer-causing substance because it damages the genetic material (DNA) in cells. In one geographical location near a nuclear weapons plant, an increase in leukemia (a form of cancer) was reported in people who swallowed a large amount of strontium-90 in water.

Calcium, strontium and barium Calcium, for example, reacts fairly vigorously with cold water in an exothermic reaction.

Radioactive strontium is much more of a health risk than stable strontium. When the uptake is very high, it may cause anaemia and oxygen shortages, and at extremely high concentrations it is even known to cause cancer as a result of damage to the genetic materials in cells.

Strontium-90 has a half- life of 29 years and emits beta particles of relatively low energy as it decays. Accidents involving nuclear reactors such as Chernobyl and Fukushima have released strontium into the atmosphere, which ultimately settles to the earth’s surface as fallout.

The excitation wavelengths for strontium aluminate range from 200 to 450 nm. The wavelength for its green formulation is 520 nm, its aqua, or blue-green, version emits at 505 nm, and its blue emits at 490 nm.

characteristics. …of which the longest-lived is strontium-90 (28.9-year half-life). This isotope, formed by nuclear explosions, is considered the most dangerous constituent of fallout.

It decays into a new, stable metal: lead. Its physical half life is 140 days. This means that half its radioactivity dies away in this time. Its biological half life is 40 days , so it takes 40 days for biological processes to eliminate half of the Polonium-210 in the body.

The Most Radioactive Places on Earth

• Uranium: 4.5 billion years.
• Plutonium 239: 24,300 years.
• Plutonium 238: 87.7 years.
• Cesium 137: 30.2 years.
• Strontium-90: 28-years.

THE FORCES OF EROSION: WATER, GLACIERS, AND WIND But the most powerful erosive force on earth is not wind but water, which causes erosion in its solid form — ice-and as a liquid. Water in its liquid form causes erosion in many ways.

gravity

When scientists looked for a unified theory of the universe they forgot the most powerful unseen force. Love is Light, that enlightens those who give and receive it. Love is gravity, because it makes some people feel attracted to others.

Most powerful armies in the world: US is No 1; find out where India, China and Pakistan rank.

China has the strongest military in the world, scoring 82 out of 100 points in the index, it noted. China wins in a sea war with 406 ships vs Russia with 278 and the USA or India with 202, it said.

Tuvalu

Japan was deprived of any military capability after being defeated by the Allies in World War II and was forced to sign a surrender agreement presented by General Douglas MacArthur in 1945. It was occupied by U.S. forces and only had a minor domestic police force on which to rely for domestic security and crime.

Article 9 of the Japanese Constitution (日本国憲法第9条, Nihonkokukenpō dai kyū-jō) is a clause in the national Constitution of Japan outlawing war as a means to settle international disputes involving the state. The article also states that, to accomplish these aims, armed forces with war potential will not be maintained.

Personnel and recruitment

By this treaty, USFJ is responsible for the defense of Japan. As of 2013, there are approximately 50,000 U.S. military personnel stationed in Japan, along with approximately 40,000 dependents of military personnel and another 5,500 American civilians employed there by the United States Department of Defense.

The Japanese intended the attack as a preventive action to keep the United States Pacific Fleet from interfering with its planned military actions in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States.