Depending upon the conditions, either nucleation or growth may be predominant over the other, and as a result, crystals with different sizes and shapes are obtained (Control of crystal size and shape constitutes one of the main challenges in industrial manufacturing, such as for pharmaceuticals).
For the region, see San Fernando Valley. San Fernando is a city located in the San Fernando Valley, in the northwestern region of Los Angeles County, California. It is completely surrounded by the City of Los Angeles.
Major corporations in San Francisco, San Jose, Oakland, and the surrounding cities help make the region second in the nation in concentration of Fortune 500 companies, after New York. The region's northern counties encompass California's famous Wine Country, home to hundreds of vineyards and wineries.he Bay Area's nine counties are Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, and Sonoma.