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.
14,283 (46.0%) of residents are foreign born, high for the city of Los Angeles and high for the county. Mexico (55.3%) and El Salvador (11.2%) are the most common foreign places of birth. Arleta. is a neighborhood in the city of Los Angeles in the San Fernando Valley region of Los Angeles County. The neighboring communities are Mission Hills, North Hills, Pacoima, Panorama City and Sun Valley.