Sat. November 22, 2008
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Forskning & Framsteg
November 21, 2008
Dateringen bygger på isotopanalyser av grundämnena neodym och samarium. Jorden är cirka 4,6 miljarder år gammal. Lämningar av den tidiga skorpan är ovanliga ...
MarketWatch
November 18, 2008
Researchers at the University of
Maryland's A. James Clark School of
engineering have discovered a new lead-free material,
bismuth samarium ferrite (BSFO), ...
Live-PR.com (Pressemitteilung)
November 15, 2008
The company currently
markets Quadramet (
samarium Sm-153 lexidronam injection), Prostascint (capromab pendetide), and Soltamox (tamoxifen citrate) to
the US ...
Market Wire (press release)
November 14, 2008
This process determines the most viable
magnetic Materials (IE, rare earth,
ceramic,
neodymium,
samarium cobalt, grade and etc.) to be used, including the ...
istockAnalyst.com (press release)
November 13, 2008
This process determines the most viable
magnetic Materials (IE, rare earth,
ceramic,
neodymium,
samarium cobalt, grade and etc.) to be used, including the ...
International Business Times
November 13, 2008
This processdetermines the most viable
magnetic Materials (IE, rare earth,
ceramic,
neodymium,
samarium cobalt, grade and etc. ...
MarketWatch
November 13, 2008
This process determines the most viable
magnetic Materials (IE, rare earth,
ceramic,
neodymium,
samarium cobalt, grade and etc.) to be used, including the ...
Hifi
November 7, 2008
In de body (recht boven de naalddrager) bevindt zich een relatief grote, stationaire samarium-Cobalt magneet. Het cantilever is niet van een magneetje ...
sueddeutsche.de
October 31, 2008
Das in dem Stein enthaltene Element samarium-146 war zu großen Teilen zu Neodym-142 zerfallen. Die Datierung ergab, dass der Stein eine viertel Milliarden ...
Curetoday.com (press release)
October 25, 2008
... chemotherapy, surgery, and radiopharmaceuticals, including Quadramet (
samarium-153) and Metastron (
strontium-89). The latter are radioactive materials ...
Spectrosciences
October 23, 2008
... O'Neil et le géochimiste Richard Carlson ont prélevé des échantillons dont ils ont analysé la composition isotopique des éléments samarium et néodymium. ...
Die Presse
October 14, 2008
... deshalb hat eine Gruppe um Anne Osborne (Bristol) ein zweites Archiv erschlossen, das von samarium und Neodym, beide sind „seltene Erden". ...
Die Presse
October 14, 2008
... deshalb hat eine Gruppe um Anne Osborne (Bristol) ein zweites Archiv erschlossen, das von samarium und Neodym, beide sind „seltene Erden". ...
La Chronique Agora
October 6, 2008
Les lanthanides : lanthane, cérium, praséodyme, néodyme, prométhium,
samarium,
europium,
gadolinium,
terbium,
dysprosium,
holmium,
erbium,
thulium, ...
L'Edito Matières Premières
October 2, 2008
Les lanthanides : lanthane, cérium, praséodyme, néodyme, prométhium,
samarium,
europium,
gadolinium,
terbium,
dysprosium,
holmium,
erbium,
thulium, ...
Futura Sciences
October 2, 2008
Il s'agit bien sûr d'une application des méthodes de datation isotopique, reposant en l'occurrence sur des isotopes de néodyme 142 et de samarium 146. ...
istockAnalyst.com (press release)
October 2, 2008
By measuring minute variations in the isotopic composition of the rare earth elements
neodymium and
samarium in the rocks, O'Neil and Carlson said they ...
Kazinform
October 1, 2008
By measuring minute variations in the isotopic composition of the rare earth elements
neodymium and
samarium in the rocks, O'Neil and Carlson said they ...
Times of the Internet
October 1, 2008
By measuring minute variations in the isotopic composition of the rare earth elements
neodymium and
samarium in the rocks, O'Neil and Carlson said they ...
Earth & Sky
October 1, 2008
They used a thermal ionization mass spectrometer to measure minute variations in the isotopic composition of the rare earth elements
neodymium and
samarium ...
C2W
September 30, 2008
Deze stabiele isotoop wordt gevormd door radioactief verval van samarium-146. Ongeveer 4,1 miljard jaar geleden was al het samarium-146 op aarde al ...
Scientific American
September 29, 2008
Researchers collected rocks and measured minute isotopic variations in rare earth elements called
neodymium and
samarium. According to dating techniques, ...
n-tv
September 29, 2008
Das Alter ergab sich aus der Isotopenzusammensetzung zweier seltener Elemente in der Probe, Neodym und samarium. Die Proben hatten demnach ein Alter ...
Kennislink
September 28, 2008
Ze gebruikten de verhouding tussen de elementen samarium en neodynium om tot een ouderdom te komen, een relatief nieuwe, complexe methode. ...
Toronto Star
September 28, 2008
For their clock, they used the steady radioactive decay of an isotope of the element samarium with a half-life of 103 million years. ...
eFluxMedia
September 26, 2008
The age of the rocks was determined by using isotopic dating methods which enable
scientists to analyze the elements
samarium and
neodymium. ...
InTheNews.co.uk
September 26, 2008
A study published in the journal
science today measured variations in the isotopic composition of the rare elements
neodymium and
samarium in the rocks and ...
BBC News
September 26, 2008
... who dated the rocks by measuring isotopes of the rare earth elements
neodymium and
samarium, which decay over time at a known rate. ...
BRANCHEZ-VOUS.com
September 26, 2008
Les géologues ont déterminé l'âge des roches en mesurant la composition isotopique du néodynium et du samarium qui s'y trouvent. Ainsi, les roches auraient ...
Discover Magazine
September 26, 2008
Any rocks that formed while
samarium-146 was still around would today contain larger than usual quantities of
neodymium-142.... However, the neodymium-142 ...
forskning.no
September 26, 2008
... seg prøver av steinen og undersøkte alderen ved å sjå på ørsmå variasjonar i den isotopiske samansetjinga av dei sjeldne grunnstoffa neodym og samarium. ...
Tagesspiegel
September 26, 2008
O'Neil und seine Kollegen bereiteten die Gesteinsproben so weit auf, dass sie die Anzahl der Isotope der Elemente samarium und Neodym messen konnten. ...
Le Monde
September 25, 2008
Ces géologues ont établi l'âge de ces roches en mesurant la composition isotopique du néodynium et du samarium qui s'y trouvent et qui sont des éléments ...
Tagesspiegel
September 25, 2008
O'Neil und seine Kollegen bereiteten die Gesteinsproben so weit auf, dass sie die Anzahl der Isotope der Elemente samarium und Neodym messen konnten. ...
wissenschaft.de
September 25, 2008
Dabei konzentrierten sie sich auf die Elemente Neodym und samarium sowie deren Isotope, die sich durch eine unterschiedliche Zahl an Kernbausteinen ...
YLE Radio 1
September 25, 2008
samarium-
neodymium-ajoitus perustuu näiden kahden alkuaineen tiettyjen isotooppien suhteiden määrittämiseen. Molemmat kuuluvat ns. harvinaisiin ...
CBC.ca
September 25, 2008
The researchers used isotopic dating, analyzing the decay of the radioactive elements
neodymium-142 and
samarium-146 to determine the age of the rocks. ...
Resource Investor
September 18, 2008
... rare earth materials,
neodymium,
praseodymium, and
samarium when in 1984 the modern rare earth based
magnets were invented by Magnaquench and Sumitomo. ...
Components in Electronics
September 13, 2008
Each sensor subassembly consists of a high-temperature plastic shell that holds together a
samarium-cobalt
magnet, a pole piece, and a Hall-effect sensor IC ...
Hamburger Abendblatt
September 9, 2008
Betroffen ist nur ein Teil der Radionuklide, die in der Medizin verwendet werden:
technetium-99,
yttrium-90,
samarium-153. Diese Substanzen werden nach dem ...
