Sulphides

A chemical bond that stabilizes the three-dimensional structure of proteins, and hence the protein's normal function. They form between cysteine residues in the same or different ...

lead(II) sulphide

Science; General science

A black crystalline solid, PbS, which is insoluble in water; r.d. 7.5; m.p. 1114°C. It occurs naturally as the metallic-looking mineral galena (the principal ore of lead). It may ...

tin(II) sulphide

Science; General science

A grey-black cubic or monoclinic solid, SnS, virtually insoluble in water; r.d. 5.22; m.p. 882°C; b.p. 1230°C. It has a layer structure similar to that of black phosphorus. Its ...

Toni voda

Travel; Travel sites; Geology

Toni voda is a subterranean river, located in a karst field, just a couple of kilometers from Galichnik.

drumlin

Earth science; Geology

Streamlined hill, largely of till, with blunt end pointing into direction from which ice moved. Occur in clusters called drumlin fields.

drylands

Earth science; Geology

A general term for semiarid and desert lands.

ductile

Earth science; Geology

Structural behavior in which a material deforms permanently without fracturing.

dust bowl

Earth science; Geology

An area subject to dust storms, especially south central United States.

dust storm

Earth science; Geology

Large volume of dust-sized particles lifted high into the atmosphere.

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Industry/Domain: Anthropology Category: Applied anthropology

liminality

A state a person can be in when they are in the middle of the ritual. They have left behind their previous state, but have yet to attain the form that ...