• warning: Creating default object from empty value in /home/webelem/public_html/nexus/modules/taxonomy/ on line 33.
  • strict warning: Non-static method view::load_views() should not be called statically in /home/webelem/public_html/nexus/sites/all/modules/views/views.module on line 864.
  • strict warning: Non-static method view::db_objects() should not be called statically in /home/webelem/public_html/nexus/sites/all/modules/views/includes/ on line 1417.
  • strict warning: Only variables should be passed by reference in /home/webelem/public_html/nexus/sites/all/modules/captcha/ on line 61.

Chinese periodic table poster

Chinese periodic table (traditional)Chinese periodic table (traditional)
I'm pleased to announce that you can now buy a Chinese periodic table poster (traditional) at the WebElements shop.

Nuclear Power Expansion in the USA

Dr. Thomas Neff, a research affiliate at the MIT (Massachussetts Institute of Technology) Center for International Studies states that limited supplies of uranium fuel for nuclear power plants may thwart the renewed and growing interest in nuclear energy in the United States and other nations.

Over the past 20 years, safety concerns and politics dampened all aspects of development of nuclear energy. No new reactors were ordered and there was investment neither in new uranium mines nor in building facilities to produce fuel for existing reactors. Instead, the nuclear industry lived off commercial and government inventories which are now nearly gone. It is stated that worldwide uranium production meets only about 65% of current reactor requirements.

A few years ago uranium inventories were being sold at US$ 10 per pound; the current price is US$ 85 per pound.

Much of the uranium used by the United States comes from mines in Australia, Canada, Namibia, and, Kazakhstan. Small amounts are mined in the western United States, but the United States is largely reliant on overseas supplies. The United States also relies for half its fuel on Russia under a “swords to ploughshares” 1991 deal. This deal is converting about 20,000 Russian nuclear weapons to fuel for U.S. nuclear power plants, but it ends in 2013, leaving a substantial supply gap for the United States.

Further, China, India, and even Russia have plans for massive deployments of nuclear power and are trying to lock up supplies from countries on which the United States has traditionally relied. As a result, the United States could be the “last one to buy, and it could pay the highest prices, if it can get uranium at all,” Neff said. “The take-home message is that if we're going to increase use of nuclear power, we need massive new investments in capacity to mine uranium and facilities to process it.”

Mined uranium comes in several forms, or isotopes. For starting a nuclear chain reaction in a reactor, the only important isotope is uranium-235, which accounts for only 7 out of 1000 atoms in the mined product. To fuel a nuclear reactor, the concentration of uranium-235 must be 40 to 50 out of 1000 atoms. This is done by separating isotopes in an enrichment plant to achieve the higher concentration, but there is not enough processing capacity worldwide to enrich all the uranium required.

China aims to extend the periodic table

China is expecting to complete work on the Heavy Ion Research Facility in Lanzhou (HIRFL) - Cooler Storage Ring (CSR) soon. Its director, Zhan Wenlong, of the Chinese Academy of Sciences, said "our target is to form new heavy elements and expand the Periodic Table" and "the building of large science facilities demonstrates not only our specific technological know-how, but also the prowess of our basic research".

The HIRFL-CSR, with a state investment of about 300 million yuan (37.5 U.S. dollars), includes a main ring, experimental ring, a radioactive separator and experimental detectors. "The building of large science facilities demonstrates not only our specific technological know-how, but also the prowess of our basic research," Zhan said. Chinese science strategists decided to build the HIRFL in the mid 1980s. The facility, which was put into operation in December 1988, was awarded the top national prize for technological advancement in 1992.

The CSR is the latest upgrade of the HIRFL, which has helped Chinese scientists to form two new heavy-nuclear elements.

WebElements: the periodic table on the WWW []

Copyright 1993-2015 Mark Winter [The University of Sheffield and WebElements Ltd, UK]. All rights reserved.