CE ÎNSEAMNĂ URANIUM ÎN ENGLEZĂ?
Uraniu
Uraniul este un element chimic metalic alb-argintiu în seria actinidică a mesei periodice, cu simbolul U și numărul atomic 92. Un atom de uraniu are 92 de protoni și 92 de electroni, dintre care 6 sunt electroni de valență. Uraniul este slab radioactiv, deoarece toate izotopii sunt instabili. Cele mai frecvente izotopi ai uraniului sunt uraniul-238 și uraniul-235. Uraniul are a doua greutate atomică cea mai mare a elementelor întâmplătoare, mai ușoare decât plutoniul. Densitatea sa este cu aproximativ 70% mai mare decât cea a plumbului, dar nu la fel de densă ca aurul sau tungstenul. Se întâlnește în mod natural în concentrații scăzute de câteva părți per milion în sol, rocă și apă și este extras comercial din minerale care conțin uraniu, cum ar fi uraninita. În natură, uraniul se găsește ca uraniu-238, uraniu-235 și o cantitate foarte mică de uraniu-234. Uraniul se descompune încet prin emiterea unei particule alfa. Timpul de înjumătățire al uraniului-238 este de aproximativ 4,47 miliarde de ani, iar cel al uraniului-235 este de 704 milioane de ani, ceea ce le face utile datând din epoca pământului. Multe utilizări contemporane ale uraniului exploatează proprietățile sale unice nucleare.
Definiția uranium în dicționarul Engleză
Definiția uraniului din dicționar este un element metalic alb-argintiu din seria actinidică. Se întâmplă în mai multe minerale, inclusiv pitchblende, carnotit și autunite, și este folosit în principal ca sursă de energie nucleară prin fisiunea uraniului-235 al radioizotopului. Simbol: U; atomic nr: 92; atomic: 238,0289; timpul de înjumătățire al izotopului cel mai stabil, 238U: 451 × 109 ani; valență: 2-6; densitate relativă: 18,95; punct de topire: 1135 ° C; punct de fierbere: 4134 ° C.
CITATE ÎN ENGLEZĂ CU «URANIUM»
Citate renumite și propoziții cu cuvântul
uranium.
Satellite images suggest North Korea is building a light-water reactor and working on uranium enrichment. This is troubling.
They have been saying for a long time that Iraq made an effort to import active uranium, and my colleague demonstrated the other day that they came to the conclusion that it was a fake document that everybody is relying upon.
There are better alternatives... Australia should be exporting its solar technology, not its uranium.
Nuclear power is here to stay, and we need to support a strong domestic uranium industry.
At the height of Iraq's clandestine nuclear weapons program, which nearly succeeded in building a bomb in 1991, Tuwaitha incorporated research reactors, uranium mining and enrichment facilities, chemical engineering plants and an explosives fabrication center to build the device that detonates a nuclear core.
In addition, it is very likely that United States action in Iraq caused Iran to open its nuclear facilities for international inspection and suspend its uranium enrichment activities.
With a fourth generation of nuclear power, you can have a technology that will burn more than 99 percent of the energy in the fuel. It would mean that you don't need to mine uranium for the next thousand years.
I think we ultimately ought to look to put all uranium enrichment and fuel reprocessing, if any is done, under multinational control. Those are the two technologies by which nuclear energy can be translated into nuclear weapons programmes.
Connection between life and radioactive nuclei is straightforward. No life without tectonic activity, without volcanic activity. And we know very well that geothermal energy is mostly produced by decay of uranium, thorium, and potassium.
Native people - about two-thirds of the uranium in the United States is on indigenous lands. On a worldwide scale, about 70 percent of the uranium is either in Aboriginal lands in Australia or up in the Subarctic of Canada, where native people are still fighting uranium mining.
CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «URANIUM»
Descoperă întrebuințarea
uranium în următoarea selecție bibliografică. Cărți în legătură cu
uranium și extrase din aceasta pentru a furniza contextul de întrebuințare al acestuia în literatura Engleză.
1
Uranium: War, Energy, and the Rock That Shaped the World
This is its fundamental paradox, and its story is a fascinating window into the valor, greed, genius, and folly of humanity.
2
The Navajo People and
Uranium Mining
Based on statements given to the Navajo Uranium Miner Oral History and Photography Project, this revealing book assesses the effects of uranium mining on the reservation beginning in the 1940s.
Doug Brugge, Timothy Benally, Esther Yazzie-Lewis,
2007
3
Australia's
Uranium Trade: The Domestic and Foreign Policy ...
This edited volume explores Australia's uranium trade by examining it across a range of domestic and international dimensions.
Michael Clarke, Stephan Frühling, Andrew O'Neil,
2011
4
The New
Uranium Mining Boom: Challenge and lessons learned
The book presents the results from the Uranium Mining and Hydrogeology Conference (UMH VI) held in September 2011, in Freiberg, Germany.
Broder Merkel, Mandy Schipek,
2011
5
Uranium Deposits Of The World
This volume gathers and presents a massive collection of data on the location, quality and accessibility of uranium resources in nearly every region of the globe.
6
Hitler’s
Uranium Club: The Secret Recordings at Farm Hall
Farm Hall was a comfortable, even civilized, prison, but it was bugged. This book contains the complete collection of transcripts that were made from the secret 1945 recordings, expertly annotated by Jeremy Bernstein.
7
Depleted
Uranium: Properties, Uses, and Health Consequences
Focusing on current, peer-reviewed data, this volume is the only available compilation book on the current understanding of the potential health hazards of depleted uranium exposure.
C. Miller Alexandra,
2006
8
Uranium, Mining and Hydrogeology
Subject of the book is Uranium and its migration in aquatic environments.
Broder Merkel, Andrea Hasche-Berger,
2008
9
Uranium Seekers: A Photo-Essay Tribute to Miners (Working)
The, Uranium Seekers, saga began in 1976 when world-famous Hollywood, California photographer, Martin, was contracted to come to Utah and begin documenting, paying photographic tribute to, uranium miners, native Americans, and the Vanadium ...
10
Uranium Resource Processing: Secondary Resources
This book concentrates on the processing of secondary sources for recovering uranium, a field which has gained in importance in recent years as it is environment-friendly and economically in tune with the philosophy of sustainable ...
Chiranjib Gupta, Harvinderpal Singh,
2003
ȘTIRI NOI CARE INCLUD TERMENUL «URANIUM»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
uranium în contextul următoarelor știri.
The US may let Iran run hundreds of uranium centrifuges in a …
Instead of uranium, which can be enriched to be the fissile core of a nuclear weapon, any centrifuges permitted at Fordo would be fed elements such as zinc, ... «Business Insider, Mar 15»
Exiled Iranian opposition: Tehran hiding secret uranium enrichment …
"Since 2008, the Iranian regime has secretly engaged in research and uranium enrichment with advanced... centrifuge machines at this site," Jafarzadeh said. «Jerusalem Post Israel News, Feb 15»
Iran denies 'tentative uranium agreement' with US
Washington and Tehran came a step closer to agreeing on shipping part of Iran's enriched uranium stockpile to Russia, AP reported on Friday, citing diplomatic ... «RT, Ian 15»
Iran's Uranium Stockpile Grows Before Deadline for Nuclear Deal
VIENNA (Reuters) – Iran's stockpile of low-enriched uranium gas has grown by 8 percent to nearly 8.4 tonnes in about two months, U.N. atomic inspectors say, ... «Washington Free Beacon, Nov 14»
Iran open to new US proposals on Tehran's uranium programme
With Iran refusing US demands that it gut its uranium enrichment programme, the two sides are discussing a new proposal that would leave much of Tehran's ... «The Guardian, Sep 14»
India uranium deal a boost for WA
WA's fledgling uranium sector will be a step closer to becoming an export industry when Tony Abbott signs an historic deal clearing the way for Australian ... «The West Australian, Sep 14»
Iran completes process of eliminating enriched uranium
Iran has turned all of its enriched uranium closest to the level needed to make nuclear arms into more harmless forms, the UN nuclear agency says. «BBC News, Iul 14»
A Solution for the Iranian Uranium-Enrichment Puzzle
Iran's enrichment program has been the focus of international concern for more than a decade because gas centrifuge machines can be used to enrich uranium ... «The National Interest Online, Iul 14»
Nuclear Talks Will Confront Iran's Future Capability to Enrich Uranium
WASHINGTON — As Iran and six world powers meet this week in Vienna to begin drafting language to resolve their nuclear standoff, negotiators say they are ... «New York Times, Mai 14»
Navajo Nation secures $1B for uranium cleanup
Navajo miners work at the Kerr McGee Corp. uranium mine at Cove, Ariz., on the Navajo reservation in 1953. Kerr-McGee abandoned uranium mine sites, ... «Santa Fe New Mexican.com, Apr 14»