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Metallogenic origin of Sipingshan hot spring gold deposit in Hulin of Heilongjiang and its metallogenic mode
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作者 HUANG Yongwei LIU Jiajun +1 位作者 QUAN Chuanshun ZHU Wenfeng 《Global Geology》 2011年第2期73-86,共14页
Sipingshan gold deposit is gold-bearing sillcalite in type. There only exist a few kinds of sulfide in the ore and it is lower in content. The gold degree is lower. Au is closely related to the Ag, Cu, Pb, As and Hg e... Sipingshan gold deposit is gold-bearing sillcalite in type. There only exist a few kinds of sulfide in the ore and it is lower in content. The gold degree is lower. Au is closely related to the Ag, Cu, Pb, As and Hg elements. The upper sillealite has Eu and Ce negative anomaly, and the lower sillealite has Eu positive anomaly, however, the hot spring cemented breccia and rhyolite porphyry have Eu negative anomaly; the S isotope component has deep-seated magmatic sulfur and terrestrial sulfate characteristic; and the Ph isotope has the character of the mixture origin of crust and mantle that is mainly dominated by Pb in the orogenic beh. The oreforming tluid temperature is 180℃-244℃ , characterized by magmatie hydrothermal and meteoric water; and the ore-forming age is 87 Ma. The deposit was formed by the metallogenic fluid in the tectonic fault zone overtlowing near the earth' s surface and leading to the metallogenic funetion and the metallogenic substar,ee deposition. 展开更多
关键词 hot spring epithermal gold deposit substanee origin metallogenic mode Sipingshan Heilongjiang
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THE ANTAGONISM OF ANGIOTENSIN Ⅱ ON THE DEPRESSOR EFFECT OF CLONIDINE IN RAT SPINAL CORD
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作者 徐晓军 范镭 +1 位作者 于英心 韩济生 《Chinese Science Bulletin》 SCIE EI CAS 1989年第8期688-692,共5页
There is a large body of evidence to suggest existence of endogenous anti-opioid substances (AOS) in central nervous system to antagonize the actions of endogenous opioid peptides. Angiotensin Ⅱ has been considered a... There is a large body of evidence to suggest existence of endogenous anti-opioid substances (AOS) in central nervous system to antagonize the actions of endogenous opioid peptides. Angiotensin Ⅱ has been considered as one of the AOS because it was found to antagonize opioid activity in various physiological and pharmacological systems. In present work, we studied the antagonistic effect of angiotensin Ⅱ on the cardiovascular activities of endogenous opioids. 展开更多
关键词 CLONIDINE ANGIOTENSIN anti-opioid substane.
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