Sodium Silicate
Sodium Silicate Definition Sodium silicate is a white amorphous (without crystalline structure) solid with the physical properties listed above. Other forms of sodium silicate range…
Science
Xenotime
Xenotime Definition Xenotime is a phosphate mineral, similar to monazite except enriched in the heavy lanthanides and yttrium. It is a rare earth phosphate mineral.…
Magnesium Oxide
Magnesium Oxide Definition Magnesium oxide is the oxide salt of magnesium with antacid, laxative and vascular smooth muscle relaxant activities. It is an inorganic compound…
Transcription Factor
Transcription Factor Definition Transcription factors (TFs) are proteins that regulate the transcription of genes—that is, their copying into RNA, on the way to making a…
Magnesium Carbonate
Magnesium Carbonate Definition Magnesium carbonate (MgCO3) is a white or brown crystalline solid or crystalline powdery compound that occurs naturally as dolomite and magnesite and…
Permafrost and its Effects
What is Permafrost? Permafrost is a thick subsurface layer of soil that remains frozen throughout the year, occurring chiefly in Polar Regions. It is defined…
Heat Shock Protein
Heat Shock Protein Definition Heat shock protein (HSP) is an intracellular protein that increases in concentration during metabolic stress, such as exposure to heat. HsPs…
Terbium
Terbium Definition Terbium is a soft, silvery-gray metallic element of the lanthanide series. It is used in color television tubes, x-ray machines, and lasers. Its…
Persian Gulf Oil
Persian Gulf Oil The gulf has many fishing grounds, extensive reefs (mostly rocky, but also coral), and abundant pearl oysters, but its ecology has been…
Steroid Hormone Receptor
Steroid Hormone Receptor Definition Steroid hormone receptor includes 48 receptors for the gonadal and adrenal steroids, nonsteroidal ligands such as thyroid hormones, vitamin D, retinoic…
Gadolinium
Gadolinium Definition Gadolinium is a silvery-white, malleable, ductile metallic element of the lanthanide series that has seven natural isotopes and 11 artificial isotopes. It is…
Oil Sands
Oil Sands A mixture of sand or clay, water and extremely viscous petroleum called bitumen. Often referred to as unconventional oil. Oil sands are a…
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