Bolsa de Valores de Nicaragua and issuers of securities. The specific regulatory frame of exchange activity is conformed by Presidential Decree 33-93 or "Reglamento General sobre Bolsas de Valores" (General Stock Market Regulations). The president of the exchange as of 2006 is Dr. Raúl A. Lacayo Solórzano. Bolsa de Valores de Nicaragua Bolsa de Valores de Nicaragua (Stock Exchange of Nicaragua, or BVDN) was created in 1994 and is the only stock exchange operating in Nicaragua. The exchange is the result of private sector initiatives encouraging the country's market liberalization programmes, which began in 1990. Trading operations officially began on January 31, 1994, and as
Dioscorea mexicana caudex, bear heart-shaped leaves. "Dioscorea mexicana" ranges from the state of San Luis Potosí in northeastern Mexico south to Panama. It is notable for its production of diosgenin, which is a precursor for the synthesis of hormones such as progesterone. Russell Marker developed the extraction and manufacture of hormones from "D. mexicana" at Syntex. Later the Mexican barbasco trade focused instead on "Dioscorea composita" instead, as this variety has a higher diosgenin content. Dioscorea mexicana Dioscorea mexicana, Mexican yam or cabeza de negro is a species of yam in the genus "Dioscorea". "Dioscorea mexicana" is a caudiciform dioscorea having either