If your facility incorporates a laminar flow cleanroom, these MAGNEHELIC and PHOTOHELIC differential pressure gauges can help you maintain the positive pressure necessary to block inrushing contaminants that can damage sensitive materials and operations.
The definition of life-history patter is: an organism's pattern of reproduction; may be rapid or slow (short or long).ong (short) life-history patterns are large species that live in more stable environments that usually have slow life-history patterns. Elephants, bears, whales, humans, and plants, such as trees are long lived.
Life history theory is a theory of biological evolution that seeks to explain aspects of organisms' anatomy and behavior by reference to the way that their life histories-including their reproductive development and behaviors, life span and post-reproductive behavior-have been shaped by natural selection.he key to life history theory is that there are limited resources available, and focusing on only a few life history characteristics is necessary. Examples of some major life history characteristics include: 1  Age at first reproductive event. 2  Reproductive lifespan and ageing.