Who is a Jew? familiar with and willing to vouch for the Jewishness of their maternal lineage or the validity of their conversion. There have been several attempts to convene representatives of the three major movements to formulate a practical solution to this issue. To date, these have failed, though all parties concede the importance of the issue is greater than any sense of rivalry among them. Ethnic Jew is a term generally used to describe a person of Jewish parentage and background who does not necessarily actively practice Judaism, but still identifies with Judaism or other Jews culturally or fraternally, or both. The
Sparging (chemistry) The low-boiling components tend to evaporate more rapidly, hence they may be removed from the bulk solution containing higher-boiling components. It is an alternative to distillation, and it does not require heat. This technique is also used in environmental chemistry to extract the volatile organic contaminants from subsoil water and soil. In metallurgy, this process is used to remove dissolved gases from the melt prior to the material being processed. For example, before casting aluminium alloys, argon bubbles are injected into liquid aluminium using a rotary degasser. The resulting argon bubbles will rise to the surface, bringing with them a