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selenium    音标拼音: [səl'iniəm]
n. 非金属元素,符号Se,原子序34

非金属元素,符号Se,原子序34

selenium
硒

selenium
n 1: a toxic nonmetallic element related to sulfur and
tellurium; occurs in several allotropic forms; a stable
grey metallike allotrope conducts electricity better in the
light than in the dark and is used in photocells; occurs in
sulfide ores (as pyrite) [synonym: {selenium}, {Se}, {atomic
number 34}]

Selenium \Se*le"ni*um\, n. [NL., from Gr. selh`nh the moon. So
called because of its chemical analogy to tellurium (from L.
tellus the earth), being, as it were, a companion to it.]
(Chem.)
A nonmetallic element of the sulphur group of atomic number
34, analogous to sulphur in its compounds. It is found in
small quantities with sulphur and some sulphur ores, and
obtained in the free state as a dark reddish powder or
crystalline mass, or as a dark metallic-looking substance. It
exhibits under the action of light a remarkable variation in
electric conductivity, and is used in certain electric
apparatus. Symbol Se. Atomic weight 78.96.
[1913 Webster]


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  • Selenium map with great detail - Homesteading Forum
    Because selenium levels can vary greatly within an area, testing the soil's selenium content is recommended Soil is considered "selenium deficient" when there is less than 0 5 mg of selenium per kg of soil Selenium has a very narrow margin of safety Goats require 0 2 parts per million of selenium, and the toxic level is 3 ppm
  • Difference between Bo-Se and Vitamin E Selenium Gel
    Contains 500 IU vitamin E and 2 5 ppm selenium per 5 ml (max level of selenium for goats is 3 ppm per animal) Dosage for newborn goats is 2 ml Dosage for adult goats is 4 ml Administer once every 30 days Palatable butterscotch flavor in a gel base Vitamin E Selenium Gel in a dial-a-dose tube is easy to administer " 2 5 ppm is 0025 mg
  • BoSe - Homesteading Forum
    e Do not overdose with selenium, toxicity may occur Prevention a Dietary inclusion of recommended NRC levels selenium and vitamin E b Areas or flocks with past experience of WMD may consider injecting pregnant ewes with selenium-vitamin E preparations at least 4-8 weeks prior to lambing Use Bo-Se at the rate of a 1 1 2 cc 100 lb c
  • When to give Bose shot - Homesteading Forum
    Bo-Se is a selenium Vitamin E combination shot It is for areas that are selenium deficient Goats with selenium deficiency will have weak kids born and can have problems with retained placentas and issues in labor It can also cause soft pasterns
  • Loose Minerals and Pregnant Cow | Homesteading Forum
    Selenium is a world wide deficiency and is easily fixed Copper deficiency - Molybdenum excess is more complex and can be tied up with iron Because I keep sheep, putting copper in the fertilizer is not an option so twice a year all cattle are injected for selenium and copper
  • Has anyone taken selenium and felt crazy or too much detox????
    It is probably better to eat a few brazil nuts daily than to take selenium i take both, 100gms selenium and a handful of brazil nuts twice a day in blended in smoothies for protein Just after removal i was unable to take any selenium in any form, i was too sensitive, so just be aware if you are new to this and vulnerable, go slow with selenium
  • Pig minerals? - Homesteading Forum
    We changed hay suppliers The new one grew hay on low selenium soils This causes white muscle disease We lost a litter when they weaned Necropsy showed it Simply giving our pigs access to dirt from our own farm, which has plenty of selenium, solved the problem We are fortunate to have very good soil re: mineral balance
  • Iron content in water goat polio???. . . . - Homesteading Forum
    I was looking up seleniferous areas in Kansas, and soil composition, and how iron interacts with selenium, and ran across the info that much of Kansas is on selenium rich shale, but in actual seleniferous areas, where selenium is in a form that can be metabolized by plants, (Selenium Oxide 4-6) and does not have either a pH that interferes with
  • Lamb with sore legs. . . . . - Homesteading Forum
    Well Linus has both of the legs on his left side sore At first I would have thought navel joint ill except for the fact that the front one looks like it might be broken or dislocated He is still drinking fine I have him on a bottle as his mom has not enough milk for both of the lambs
  • Bo Se concerns for pregnant doe | Homesteading Forum
    Both my regular vets recommend Bo-Se 2-4 weeks before delivery for selenium deficiency but we live in a very deficient area Selenium deficiency can cause both delivery problems and kid problems We give Bo-Se at breeding and then again at the 2-4 weeks before kidding





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