1. 跳轉至内容
  2. 跳轉至主選單
  3. 跳轉到更多DW網站

稀土元素

鑭系元素以及鈧、釔共17種化學元素的合稱。

跳轉至下一欄 所有相關主題內容

所有相關主題內容

Description Rareearthoxides.jpg English: These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium. Category:lanthanides Date By voluntarily completing the form below, you can greatly help us to justify the continued availability of this service and to improve our service to media and the public. In addition, we request that media sources and other publishers send a tear sheet or a copy of the publication in which the image is used. Thank you for your assistance. Please send tear sheets to: USDA, ARS, IS Photo Unit 5601 Sunnyside Ave. Rm. 1-2225 Beltsville, MD 20705-5129 27 June 2009(2009-06-27) (original upload date) Source Transferred from en.wikipedia (Original text : http://www.ars.usda.gov/is/graphics/photos/jun05/d115-1.htm) Author Peggy Greb, US department of agriculture. Original uploader was Materialscientist at en.wikipedia Permission (Reusing this file) PD-USGOV-USDA-ARS. [edit] Licensing Public domain This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.
Description Rareearthoxides.jpg English: These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium. Category:lanthanides Date By voluntarily completing the form below, you can greatly help us to justify the continued availability of this service and to improve our service to media and the public. In addition, we request that media sources and other publishers send a tear sheet or a copy of the publication in which the image is used. Thank you for your assistance. Please send tear sheets to: USDA, ARS, IS Photo Unit 5601 Sunnyside Ave. Rm. 1-2225 Beltsville, MD 20705-5129 27 June 2009(2009-06-27) (original upload date) Source Transferred from en.wikipedia (Original text : http://www.ars.usda.gov/is/graphics/photos/jun05/d115-1.htm) Author Peggy Greb, US department of agriculture. Original uploader was Materialscientist at en.wikipedia Permission (Reusing this file) PD-USGOV-USDA-ARS. [edit] Licensing Public domain This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.
ARCHIV - Eine in Peru gefundene "Mangan-Knolle" liegt am Mittwoch (26.01.2011) in Bonn in einer Plastikkiste. Es gilt für Erdöl und Gas, für Eisenerz, Zink oder seltene Erden: Rohstoffe sind begehrt, aber sie werden knapp und immer teurer. Der Kampf um die Vorkommen ist längst entbrannt. In Deutschland macht ein Bündnis zur Rohstoffsicherung mobil. Foto: Oliver Berg dpa/lnw (zu dpa: "Teuer, knapp und begehrt - der Kampf um Rohstoffe") +++(c) dpa - Bildfunk+++
Landschaft Ostgrönlands rund 50 Kilometer östlich der Stadt Tasiilaq in Ostgrönland, Grönland, Dänemark, aufgenommen am 17.07.2012. Foto: Patrick Pleul
Description Rareearthoxides.jpg English: These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium. Category:lanthanides Date By voluntarily completing the form below, you can greatly help us to justify the continued availability of this service and to improve our service to media and the public. In addition, we request that media sources and other publishers send a tear sheet or a copy of the publication in which the image is used. Thank you for your assistance. Please send tear sheets to: USDA, ARS, IS Photo Unit 5601 Sunnyside Ave. Rm. 1-2225 Beltsville, MD 20705-5129 27 June 2009(2009-06-27) (original upload date) Source Transferred from en.wikipedia (Original text : http://www.ars.usda.gov/is/graphics/photos/jun05/d115-1.htm) Author Peggy Greb, US department of agriculture. Original uploader was Materialscientist at en.wikipedia Permission (Reusing this file) PD-USGOV-USDA-ARS. [edit] Licensing Public domain This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.
Description Rareearthoxides.jpg English: These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium. Category:lanthanides Date By voluntarily completing the form below, you can greatly help us to justify the continued availability of this service and to improve our service to media and the public. In addition, we request that media sources and other publishers send a tear sheet or a copy of the publication in which the image is used. Thank you for your assistance. Please send tear sheets to: USDA, ARS, IS Photo Unit 5601 Sunnyside Ave. Rm. 1-2225 Beltsville, MD 20705-5129 27 June 2009(2009-06-27) (original upload date) Source Transferred from en.wikipedia (Original text : http://www.ars.usda.gov/is/graphics/photos/jun05/d115-1.htm) Author Peggy Greb, US department of agriculture. Original uploader was Materialscientist at en.wikipedia Permission (Reusing this file) PD-USGOV-USDA-ARS. [edit] Licensing Public domain This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.
ChinaFotoPress/Weng Huan/MAXPPP - BAOTOU, CHINA-NEVOMBER 28:(CHINA OUT) Labors work at a rare earth mine at Bayan Obo mine area on November 28, 2010 in Baotou, Inner Mongolia of China. Rare earth exploitation hots up in recent years. (Photo by Weng Huan/ChinaFotoPress Schlagworte Bergbau, Umwelt, Umweltverschmutzung, Arbeiter, Abbau, seltene erden, TAgebau, Kipper, BAgger
--FILE--An excavator loads trucks with rare earth at a mine in Mojiang Hani Autonomous County, Simao city, southwest Chinas Yunnan province, 18 March 2008. The EU has demanded that China loosen its policy on sales of rare earth materials after the World Trade Organisation upheld a ruling that Beijings policies to limit raw material exports violated international trade rules. The case, brought in 2009 by the EU, US and Mexico, touches on one of the biggest sources of tension in the world trading system: the use of export restrictions to hoard raw materials for the use of domestic manufacturers. Schlagworte Wirtschaft, Bergbau, Rohstoffe, China, Seltene Erden, Tagebau
--FILE--Piles of rare earth to be exported to Japan are pictured at the Port of Lianyungang in Lianyungang city, east Chinas Jiangsu province, 5 September 2009. The EU has demanded that China loosen its policy on sales of rare earth materials after the World Trade Organisation upheld a ruling that Beijings policies to limit raw material exports violated international trade rules. The case, brought in 2009 by the EU, US and Mexico, touches on one of the biggest sources of tension in the world trading system: the use of export restrictions to hoard raw materials for the use of domestic manufacturers. Schlagworte Wirtschaft, Bergbau, Rohstoffe, China, Seltene Erden, Tagebau
Description Rareearthoxides.jpg English: These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium. Category:lanthanides Date By voluntarily completing the form below, you can greatly help us to justify the continued availability of this service and to improve our service to media and the public. In addition, we request that media sources and other publishers send a tear sheet or a copy of the publication in which the image is used. Thank you for your assistance. Please send tear sheets to: USDA, ARS, IS Photo Unit 5601 Sunnyside Ave. Rm. 1-2225 Beltsville, MD 20705-5129 27 June 2009(2009-06-27) (original upload date) Source Transferred from en.wikipedia (Original text : http://www.ars.usda.gov/is/graphics/photos/jun05/d115-1.htm) Author Peggy Greb, US department of agriculture. Original uploader was Materialscientist at en.wikipedia Permission (Reusing this file) PD-USGOV-USDA-ARS. [edit] Licensing Public domain This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.
World Trade Organization, WTO, Director General, French Pascal Lamy, speaks about the intensive negotations for trade in agriculture and industrial products during a press conference at the WTO headquarters in Geneva, Switzerland, Wednesday, June 28, 2006. (AP Photo/Keystone, Salvatore Di Nolfi)
Bildwiederholung mit korrigierter Caption zu Bildsendung vom 12.10 11, Korrektur im ersten Satz: Bei dem Metall Tellur handelt es sich nicht um ein Metall der Seltenen Erden!!! +++ Ein Stueck des Metalls Tellur (Archivfoto vom 12.05.11). Bundeskanzlerin Angela Merkel (CDU), die sich zur Zeit in der Mongolei aufhaelt, bescheinigte dem Land weitreichende Entwicklungen. Sie werde ihren Besuch auch dazu nutzen, "um zu sagen: Wir moechten, dass alle Menschen in der Mongolei auch am Wohlstand teilhaben", sagte Merkel mit Blick auf die reichen Rohstoffvorkommen in dem Land, neben Gold und Kupfer vor allem die Metalle der Seltenen Erden. Aus Regierungskreisen verlautete dazu, dass die Chancen zur Unterzeichnung eines Rohstoffabkommens sehr gut stuenden. Merkel sprach von einer "Win-Win-Situation, also Gewinn fuer beide Seiten, indem wir wissenschaftlich-technisch zusammenarbeiten und auf der anderen Seite eben auch im Bereich der Rohstoffe". Seltene Erden werde immer teurer. Derweil belasten die stark gestiegenen Preise fuer Seltene Erden einer Studie zufolge die Profitabilitaet der Unternehmen oder gefaehrden gar deren Existenz. Das Marktvolumen werde durch die steigenden Preise in diesem Jahr voraussichtlich auf 27 Milliarden Euro ansteigen, nachdem es vor drei Jahren nur 2,4 Milliarden Euro betragen habe, heisst es in der Studie der Firma Roland Berger, die am Sonntag (09.10.11) veroeffentlicht wurde. (zu dapd-Text) Foto: Roberto Pfeil/dapd
--FILE--Piles of rare earth to be exported to Japan are pictured at the Port of Lianyungang in Lianyungang city, east Chinas Jiangsu province, 5 September 2009. The EU has demanded that China loosen its policy on sales of rare earth materials after the World Trade Organisation upheld a ruling that Beijings policies to limit raw material exports violated international trade rules. The case, brought in 2009 by the EU, US and Mexico, touches on one of the biggest sources of tension in the world trading system: the use of export restrictions to hoard raw materials for the use of domestic manufacturers. Schlagworte Wirtschaft, Bergbau, Rohstoffe, China, Seltene Erden, Tagebau