Speciation can be defined as the distribution of an element among defined chemical species in a system, and speciation analysis as the analytical activities of identifying and/or measuring the quantities of one or more individual chemical species in a sample. 1.3 Structural aspects of speciation: The definitions of species and speciation of elements are based on several different levels of atomic and molecular structure where species differences are manifest.
Noun. 1. rickshaw-a small two-wheeled cart for one passenger; pulled by one person. jinrikisha, ricksha. cart-a heavy open wagon usually having two wheels and drawn by an animal.oun. 1. rickshaw-a small two-wheeled cart for one passenger; pulled by one person. jinrikisha, ricksha. cart-a heavy open wagon usually having two wheels and drawn by an animal.
Definition of JIGGER. 1. : one that jigs or operates a jig. 2. : any of several sails. 3. : jig 3a. 4. a (1) : a mechanical device usually with a jerky reciprocating motion (2) : a mold or a machine incorporating a revolving mold on which ceramic items (as plates) are formed b: gadget, doodad. 5.: a measure used in mixing drinks that usually holds 1 to 2 ounces (30 to 60 milliliters). (1) : a mechanical device usually with a jerky reciprocating motion (2) : a mold or a machine incorporating a revolving mold on which ceramic items (as plates) are formed b: gadget, doodad. 5. : a measure used in mixing drinks that usually holds 1 to 2 ounces (30 to 60 milliliters).