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.
is a neighborhood in the city of Los Angeles in the San Fernando Valley region of Los Angeles County. The neighboring communities are Bel-Air, Brentwood, Lake Balboa, Pacific Palisades, Reseda, Sepulveda Basin, Sherman Oaks and Tarzana.