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Author: United States. Bureau of Mines
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 1076
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Author: Xiaoge Gregory Zhang
Publisher: Springer Science & Business Media
ISBN: 1475798776
Category : Science
Languages : en
Pages : 481
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Book Description
Humankind's use of zinc stretches back to antiquity, and it was a component in some of the earliest known alloy systems. Even though metallic zinc was not "discovered" in Europe until 1746 (by Marggral), zinc ores were used for making brass in biblical times, and an 87% zinc alloy was found in prehistoric ruins in Transylvania. Also, zinc (the metal) was produced in quantity in India as far back as the thirteenth century, well before it was recognized as being a separate element. The uses of zinc are manifold, ranging from galvanizing to die castings to electronics. It is a preferred anode material in high-energy-density batteries (e.g., Ni/Zn, Ag/Zn, ZnJair), so that its electrochemistry, particularly in alkaline media, has been extensively explored. In the passive state, zinc is photoelectrochemically active, with the passive film displaying n-type characteristics. For the same reason that zinc is considered to be an excellent battery anode, it has found extensive use as a sacrificial anode for the protection of ships and pipelines from corrosion. Indeed, aside from zinc's well-known attributes as an alloying element, its widespread use is principally due to its electrochemical properties, which include a well-placed position in the galvanic series for protecting iron and steel in natural aqueous environments and its reversible dissolution behavior in alkaline solutions.
Author: United States. Bureau of Mines
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 1076
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Author: United States. Agency for Toxic Substances and Disease Registry
Publisher:
ISBN:
Category : Hazardous waste sites
Languages : en
Pages : 824
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Book Description
Contains information about 80 hazardous substances, including what each substance is, how exposure may occur and possible health effects, and medical tests available to determine exposure.
Author: Takumi Yoshida
Publisher: Nova Publishers
ISBN: 9781604560565
Category : Health & Fitness
Languages : en
Pages : 352
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Book Description
Called micronutrients because they are needed only in minuscule amounts, these substances are the 'magic wands' that enable the body to produce enzymes, hormones and other substances essential for proper growth and development. As tiny as the amounts are, however, the consequences of their absence are severe. Iodine, vitamin A and iron are most important in global public health terms; their lack represents a major threat to the health and development of populations the world over, particularly children and pregnant women in low-income countries. This book presents the latest research from around the world.
Author: Francis Lieber
Publisher:
ISBN:
Category : Encyclopedias and dictionaries
Languages : en
Pages : 556
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Author: Thomas Thomson
Publisher:
ISBN:
Category : Chemistry, Inorganic
Languages : en
Pages : 1060
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Author: Andrew Ure
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 876
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Author: William Gregory
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 622
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Author: William Gregory
Publisher:
ISBN:
Category : Chemistry, Inorganic
Languages : en
Pages : 440
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Author: William Gregory
Publisher:
ISBN:
Category :
Languages : en
Pages : 622
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