GK

Design FMEA (DFMEA) Introduction to Design Failure Mode and Effects Analysis (DFMEA) When first envisioned, Design Failure Mode and Effects Analysis (DFMEA) considered potential failures modes and their causes. It was first used in rocket science. Initially, the rocket development process in the 1950’s did not go well. The complexity and difficulty of the task resulted in many catastrophic failures.  Root Cause Analysis (RCA)  was used to investigate these failures but had inconclusive results. Rocket failures are often explosive with no evidence of the root cause remaining. Design FMEA provided the rocket scientists with a platform to prevent failure. A similar platform is used today in many industries to identify risks, take counter measures and prevent failures. DFMEA has had a profound impact, improving safety and performance on products we use every day. What is Design Failure Mode and Effects Analysis (DFMEA) DFMEA is a methodical approach used ...

Endemic, epidemic, pandemic:   Endemic : a disease that exists permanently in a particular region or population. Malaria is a constant worry in parts of  Africa . Epidemic : An outbreak of disease that attacks many peoples at about the same time and may spread through one or several communities. Pandemic : When an epidemic spreads throughout the world.

Bacteria:  Most bacteria are very good. Only a few cause disease. Taking drugs called antibiotics can kill bacteria. However, due to misuse and overuse of antibiotics, bacteria today are more resistant to these drugs and are harder to kill. TB, for example, now affects 1/3 of the world population. Fun Facts about Bacteria Bacteria help our bodies with digestion and produce needed vitamins. Bacteria also help us by destroying harmful organisms within our bodies. There are more bacterial cells in your body than there are human cells. Most bacteria reproduce using a process called "binary fission." To do this, a single bacterium will grow to twice its normal size and then split into two "daughter" cells. The two new cells are exact copies of the original bacterium. Bacteria are used to make cheese, milk, sourdough bread and yogurt. 99% of all bacteria are helpful. Dead or weakened bacteria and viruses are used for making helpful vaccines. Scientists...