manganese


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Related to manganese: manganese steel, Manganese deficiency

manganese

 (Mn) [mang´gah-nēs]
a chemical element, atomic number 25, atomic weight 54.938. (See Appendix 6.) Its salts occur in the body tissue in very small amounts and serve as activators of liver arginase and other enzymes.
manganese poisoning a condition usually caused by inhalation of manganese dust; symptoms of chronic exposure include mental disorders accompanying a syndrome resembling Parkinson's disease, and inflammation throughout the respiratory system.

man·ga·nese (Mn),

(mang'gă-nēs),
A metallic element resembling iron and often associated with it, particularly in ores; atomic no. 25, atomic wt. 54.94; manganous salts are often used in medicine.
Synonym(s): manganum
[Mod. L. manganesium, manganum, an altered form of magnesium]

manganese

An essential trace metal (atomic number 25; atomic weight 54.9) required by certain enzymes (e.g., arginase and cholinesterase), which is ingested in the diet via coffee, tea, egg yolks, whole grains, leafy greens, nuts and seeds.

man·ga·nese

(mang'gă-nēz)
A metallic element resembling and often associated, in ores, with iron; atomic no. 25, atomic wt. 54.94; manganous salts are sometimes used in medicine.
[Mod. L. manganesium, manganum, an altered form of magnesium]

man·ga·nese

(mang'gă-nēz)
A metallic element resembling iron; salts are often used in medicine.
[Mod. L. manganesium, manganum, an altered form of magnesium]
References in periodicals archive ?
Common symptoms of manganese deficiency in narrow leafed lupin crops include plants with straggly growth and delayed maturity with re-greening; dropped leaves; re-shoot leaves with a tufty-type growth on branches; seeds split through the seed coat; discoloured seed around the margins; small, shrivelled seed; and dirty brown patches on leaves.
For instance, in 2018, Chinese imports of manganese from the GMC amounted to 3.47 million tonnes, which was a 106 percent improvement over the 2017 figure.
In a letter addressed to the director general oil of Petroleum Division, Attock Refinery Limited (ARL) Chief Executive Officer M Adil Khatak said ARL had serious reservations about what he said was a unilateral decision on the use of manganese and the unrealistic timelines.
Manganese can be added to fuel to make it appear to be of a higher quality, but it can reduce fuel economy and potentially harm public health due to emissions.
OFZ produces a wide range of silicon and manganese ferroalloys, cored wires and by-products from ferroalloys production in its plant in Oravsky Podzamok in the Orava region.
The acquisition of the Glencore plants in Dunkirk, France and Mo I Rana Norway represents an opportunity for Ferroglobe to increase its size in the manganese alloys industry, producing over half a m tons of sales of ferromanganese and silicomanganese.
Manganese homeostasis is of great importance to the organism because it is an essential mineral for the activity of several enzymes such as pyruvate carboxylase, which catalyzes the conversion of pyruvate to oxaloacetate (16); arginase, which converts arginine to urea (17); and manganese superoxide dismutase (MnSOD), critical for antioxidant defense (18).
However, while arsenic contaminated wells should be avoided completely, manganese contaminated wells can be treated inexpensively or be used for agriculture rather than drinking water.
Studies have shown the biological half-life of manganese in the human body against 20-40 days, and after this period it gets reduced and returns to the amount of manganese or natural serum level for people.
Concerns about heightened potential sensitivity to manganese neurotoxicity during fetal and early life compared to adulthood have recently been raised.
Manganese Removal From Groundwater: Role of Biological and Physico-Chemical Autocatalytic Processes
ABSTRACT: Effect of two antioxidants (Taurine and Manganese) in extender on different sperm parameters (sperm motility, live sperm percentage, membrane and acrosome integrity) of Sahiwal bulls was evaluated.