Chemical contaminants present in foods are often unaffected by thermal processing (unlike most microbiological agents). Chemical contaminants can be classified according to the source of contamination and the mechanism by which they enter the food product.nvironmental contaminants are chemicals that are present in the environment in which the food is grown, harvested, transported, stored, packaged, processed, and consumed. The physical contact of the food with its environment results in its contamination. Possible sources of contamination include:
For the record,  cfprefsd is a fundamental part of the MacOS operating system. It's a tool developers use when they write their application, and allows an application to read/write/modify preferences files (like files ending in .plist, and others).
In October 2011, the International Medical Device Regulators Forum (IMPDF) was created as a replacement of the Global Harmonization Task Force on Medical Devices (GHTF). IMPDF is a voluntary group of medical device regulators from around the world who wants to accelerate the international medical device regulatory harmonization and convergence. In 2012, the Medical Device Single Audit Program (MDSAP) Working Group was created to develop specific documents for advancing the concept of the Medical Device Single Audit Program The main goal of the MDSAP is to provide a more effective, efficient and less burdensome regulatory oversight of the quality management systems of medical device manufacturers.