Predictive Maintenance (PdM), also known as condition-based maintenance, attempts to evaluate the condition of equipment by performing periodic or continuous (online) equipment condition monitoring.
Just below the epidermis lies the second layer, the dermis. The dermis, although it contains blood vessels, nerves, and hair follicles, is primarily made up of a protein called collagen.. This protein forms a network of fibers that provides a framework for the growth of cells and blood vessels.ust below the epidermis lies the second layer, the dermis. The dermis, although it contains blood vessels, nerves, and hair follicles, is primarily made up of a protein called collagen.. This protein forms a network of fibers that provides a framework for the growth of cells and blood vessels.
It also  contains hair follicles, oild glands, and sweat glands. Fibroblasts  in the dermis make collagen.    T â¦ he dermis is composed of connective tissue and contains blood vessels, nerve endings, hair follicles, lymph vessels sebaceous glands(oil glands), and sudoriferous glands(sweat glands).t also  contains hair follicles, oild glands, and sweat glands. Fibroblasts  in the dermis make collagen.    T â¦ he dermis is composed of connective tissue and contains blood vessels, nerve endings, hair follicles, lymph vessels sebaceous glands(oil glands), and sudoriferous glands(sweat glands).