0 a substance, the opposite of acid, such as soda -- chất kiềm
Lime, which is an alkali, is placed on the soil in order to neutralize acid soil.
This is corroborated by the rather similar isotopic compositions of the alkali basalts and trachytes.
Although they had clear morphological characteristics, they consisted of at least three families - acid salts, volatile alkalis, and vinous or inflammable spirits.
Depleted olivine basalts are associated with radiolarian cherts while most pelagic limestones and cherts are found interbedded with alkali basalts.
Overlying the alkali basalts are minor tephrite and plagioclase- and kaersutite-phyric phonotephrite lavas.
Stricture formation is frequent after ingesting caustic chemicals such as strong acids or alkalis.
In less-deformed portions of larger intrusive bodies, alkali feldspar porphyroclasts are still recognizable.
These sources work by applying a layer of alkali metal atoms on a low work function substrate, usually tungsten.
The technique coats a tungsten plug with aluminosilicate doped with an alkali metal, which is then sintered onto the tungsten.
