نتایج جستجو برای: minerals copper
تعداد نتایج: 104102 فیلتر نتایج به سال:
Bijvard prospect area is located in the northern part of Central Iran zone, Sabzevar zone, about 40 km north of Bardaskan. The rock units exposed in the area include Cretaceous volcano-sedimentary rocks (andesite, basalt, graywacke and conglomerate) that syenogranite porphyry unit has intruded into them. Mineralization has structural control, with N35E trending, and has altered the andesitic r...
The article provides a brief overview of the problems copper production in Kazakhstan. It is shown that main current problem copper-smelting involvement low-grade ores complex mineral composition. Existing technologies are focused on processing ore with higher content, accordingly, it necessary to adjust existing enrichment and smelting technologies. To determine composition some samples promis...
INTRODUCTION Quality drinking water should be free from harmful levels of impurities such as heavy metals and other inorganic elements. METHODS Samples of tap water collected from 24 locations in Peninsular Malaysia were determined for inorganic element content. Minerals and heavy metals were analysed by spectroscopy methods, while non-metal elements were analysed using test kits. RESULTS M...
The importance of essential trace minerals on livestock productivity has been realized for several decades. In improved agricultural systems, the supplementation of essential trace minerals has lead to increased livestock production as measured by body weight gain and reproductive performance. Recently, the importance of trace mineral nutrition on immune competence in livestock has gained atten...
Wheat is an important source of minerals such as iron, zinc, copper and magnesium in the UK diet. The dietary intake of these nutrients has fallen in recent years because of a combination of reduced energy requirements associated with sedentary lifestyles and changes in dietary patterns associated with lower micronutrient density in the diet. Recent publications using data from food composition...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید