نتایج جستجو برای: iron deposit
تعداد نتایج: 159188 فیلتر نتایج به سال:
Abstract This paper aims at contributing to a better understanding of the beginnings tin and bronze metallurgy in Central Asia by investigating hitherto unique piece slag. The object was originally discovered as stray find only 4 km away from large copper-tin deposit Mušiston Tajikistan. It contains many prills copper well small charcoal particles. Radiocarbon dating places slag period between ...
Myocardial Infarction To the Editor: Tuomainen et al1 have noted an association between increased iron stores, as measured by a reduced ratio of serum transferrin receptor concentration to serum ferritin concentration, and excess risk of acute myocardial infarction (AMI). It has been suggested that iron can catalyze toxic redox reactions, which may lead to an increased risk for coronary heart d...
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Marine hydrothermal microorganisms respond rapidly to changes in the concentrations and availability of metals within their environment. Hyperthermophilic archaea appear to possess novel mechanisms for metal detoxification, dissimilatory metal reduction and metal assimilation that may be absent in their mesophilic and bacterial counterparts. For example, tungsten was found in high concentration...
Methods 48 STEMI patients underwent CMR imaging at 1.5T (Siemens Avanto) at 4 ± 2 days post-PPCI and 40 completed a follow-up scan at 5 ± 2 months. Left ventricular (LV) short-axis native T1 (MOLLI), T2 and T2* maps were acquired. MVO was indicated by a hypo-intense core on LGE images. A hypo-intense core on T2*-maps with a T2*<20 ms was used for IMH (acutely) or chronic iron deposit (at follow...
The results of a study on the use glauconite-containing overburden rocks Novodvorskoye deposit Pinsk district Brest region to produce glasses for various purposes are presented. compositions raw materials in system «glauconite-containing rock – chalk iron oxide soda ash» have been developed, limiting amount components and basic oxides optimized. It has established that main criterion obtaining ...
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