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.
The City of San Fernando is governed by a city council. Members of the City Council are elected and serve four year terms. The mayor is appointed every year, on a rotating basis, by a majority vote of the Council. The Council meets on the first and third Monday of each month at 6:00 pm in the Council Chambers.