منابع مشابه
NEW REFRACTORY MATERIALS FOR THE COPPER INDUSTRY
Wear of various basic refractory materials to substitute to currently used magnesia chrome bricks has been studied, measuring matte and slag penetration and dissolution, through different cup and rotary slag tests. High magnesia with and without impregnation, magnesia graphite, magnesia-alumina spinel with and without impregnation, olivine-magnesia and olivine magnesia- graphite bricks, as well...
متن کاملThe Determination of Copper in Biological Materials.*
Many early workers detected copper in certain plants, but attached no significance to its occurrence. Bucholz (1) and Meissner (2) in 1816 were probably the first definitely to establish the presence of copper in plant life. Sarzeau (3), in 1830, found copper in numerous plants, and since then many workers have reported the occurrence of this element, but most of them, as reviewed by Chevreul (...
متن کاملVisual ordnance recognition
We describe a method for recognizing surface-lying ordnance in test ranges using stereo range information and image edge maps. This method is to be used by an unmanned ground vehicle (UGV) surveying the test range for autonomous clearing of ordnance. We concentrate on a particular type of cylindrical ordnance (BLU-97) in current usage in U.S. military test ranges. In order to locate instances o...
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ویژگی های زمین شیمیایی، کانی شناسی، و میکرومورفولوژیکی خاک ها و سنگ مادر مربوطه در منطقه بین بخش های جنوبی زاگرس و خلیج فارس تا دریای عمان(استان هرمزگان، ایران) مورد بررسی قرار گرفت. هدف های این مطالعه شناسایی تغییرات در خصوصیات فیزیکی، شیمیایی، و ترکیب کانی شناسی خاک، مطالعه میکرومورفولوژی و تکامل خاک، و بررسی توزیع عنصر خاک بر اساس هوازدگی، پروسه های خاک و زمین شناسی جهت توصیف اثرات مواد مادر...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1921
ISSN: 0036-8733
DOI: 10.1038/scientificamerican09171921-197a