نتایج جستجو برای: old iron mining
تعداد نتایج: 583104 فیلتر نتایج به سال:
The 4th century BC marks the main entrance of Celtic populations in northern Italy. Their arrival has been suggested based on the presence of Celtic customs in Etruscan mortuary contexts, yet up to now few bioarchaeological data have been examined to support or reject the arrival of these newcomers. Here we use strontium isotopes, non-metric dental traits and funerary patterns to unravel the bi...
Aspirin is being increasingly prescribed for cardiovascular protection, but is also recognized to have significant gastrointestinal side-effects. Whether chronic aspirin consumption causes iron deficiency is undetermined, and there is little information available regarding iron deficiency and aspirin use in old age. We studied the relationship between iron deficiency anaemia and regular aspirin...
The Pau Branco mine supplies two blast furnaces with iron ore lumps, and currently, charcoal consumption for pig iron production accounts for 47% of the blast furnaces’ operational cost. A geometallurgical model is presented to support an economic study considering reserve volumes, product quality, and operational costs based on the metallurgical performance of different iron ore typologies. Sa...
Purpose. To improve of the sub-level caving mining methods during deposits high-grade iron ores by applying a rational mode and intensifying ore drawing. Methodology. It included an analysis scientific literature, design documentation practice iron-ores in complex geomechanical conditions deep horizons mines, to establish formation fundamentally new foundations scientific-and-design solutions f...
abstract background some researches have shown the association between iron deficiency and migraine headache in adults. the aim of present study was to evaluate efficacy of ferrous sulfate treatment on migraine headaches of 5-15 years old migraineur children with iron deficiency. materials and methods in a quasi- experimental study, monthly frequency, severity, duration and disability of headac...
Absorption of iron was studied with a double-isotope technique that allowed differentiation between "mucosal uptake," "mucosal transfer," and ultimate "retention" of iron. A physiologic dose of ferrous sulfate was administered to 25 healthy young adults, 40 active aged persons, and 20 patients with uncomplicated iron deficiency. Radioactivity was measured with a whole-body scanner. Iron absorpt...
BACKGROUND Iron-fortified formulas are recommended throughout infancy and are frequently used beyond, yet safety aspects have been inadequately studied. Iron could theoretically increase pro-oxidant stress, with potential adverse effects, including infection risk, and some clinicians suspect that iron-fortified formulas induce gastrointestinal disturbance. OBJECTIVE A planned component of a l...
introduction: children’s iron deficiency anemia is the most common nutritional problem; it plays an important role in reducing the child’s scientific and practical abilities. this study aims at reviewing the prevalence of iron deficiency anemia in 1 to 6 year old children referring to the city health care centers in jahrom. material and methods: this is a descriptive-analytical and cross-sectio...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید