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2. Oilite - Wikipedia

   en.wikipedia.org/wiki/Oilite

   Oilite is manufactured using powder metallurgy so that tiny pores are present in the bearings. The pores are then vacuum impregnated with an oil to improve the material's bearing ability. [1] The material holds approximately 20% oil by volume. [5] The most common lubricant is SAE 30 oil. [6]

3. Conservation and restoration of metals - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   Derveni krater, bronze, 350 BC, height: 90.5 cm (35 1 ⁄ 2 in.), Inv. B1, Archaeological Museum of Thessaloniki, after cleaning and conservation. Conservation and restoration of metals is the activity devoted to the protection and preservation of historical (religious, artistic, technical and ethnographic) and archaeological objects made partly or entirely of metal.

4. Biohydrometallurgy - Wikipedia

   en.wikipedia.org/wiki/Biohydrometallurgy

   Metallurgy: A process involving the separating and refining of metals from other substances; [4] Bioleaching: Using biological agents (bacteria) to extract metals or soils; [5] general term used to encompass all forms biotechnological forms of extraction (hydrometallurgy, biohydrometallurgy, biomining, etc)

5. Non-ferrous metal - Wikipedia

   en.wikipedia.org/wiki/Non-ferrous_metal

   In metallurgy, non-ferrous metals are metals or alloys that do not contain iron (allotropes of iron, ferrite, and so on) in appreciable amounts.. Generally more costly than ferrous metals, non-ferrous metals are used because of desirable properties such as low weight (e.g. aluminium), higher conductivity (e.g. copper), [1] non-magnetic properties or resistance to corrosion (e.g. zinc). [2]

6. Extractive metallurgy - Wikipedia

   en.wikipedia.org/wiki/Extractive_metallurgy

   Extractive metallurgy is a branch of metallurgical engineering wherein process and methods of extraction of metals from their natural mineral deposits are studied. The field is a materials science, covering all aspects of the types of ore, washing, concentration, separation, chemical processes and extraction of pure metal and their alloying to suit various applications, sometimes for direct ...

7. Dermatologists Have Tested Tons Of Moisturizers—These Are The ...

   www.aol.com/derms-agree-best-moisturizer-dry...

   As described by Dr. Thosani, it's an oil-free moisturizer packed with prebiotic thermal water, ceramides, niacinamide, and glycerin, ensuring effective hydration and skin rejuvenation.