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Erdheim–Chester disease (ECD) is an extremely rare disease characterized by the abnormal multiplication of a specific type of white blood cells called histiocytes, or tissue macrophages (technically, this disease is termed a non-Langerhans-cell histiocytosis).
Early childhood development is the period of rapid physical, psychological and social growth and change that begins before birth and extends into early childhood. [1] While early childhood is not well defined, one source asserts that the early years begin in utero and last until 3 years of age.
ECD may refer to: . Early childhood development; Endocardial Cushion Defect Heart structural defect; Eastern Caribbean dollar; Eastern Continental Divide in North America; ECD (gene) E. C. Drury School for the Deaf, in Milton, Ontario, Canada
An electrochromic device (ECD) controls optical properties such as optical transmission, absorption, reflectance and/or emittance in a continual but reversible manner on application of voltage (electrochromism). This property enables an ECD to be used for applications like smart glass, electrochromic mirrors, and electrochromic display devices.
Energy Conversion Devices, Inc. (ECD) was an American photovoltaics manufacturer of thin-film solar cells made of amorphous silicon used in flexible laminates and in building-integrated photovoltaics. The company was also a manufacturer of rechargeable batteries and other renewable energy related products. ECD was headquartered in Rochester ...
An ECD has a limited [clarification needed] dynamic range and finds its greatest application in analysis of halogenated compounds. [9] The detection limit for electron capture detectors is 5 femtograms per second (fg/s) and the detector commonly exhibits a 10,000-fold linear range.
ECD Corporation was a small, privately owned [1] American computer and electronics company based in Cambridge, Massachusetts, and active from 1974 to 1983. During its lifespan, the company manufactured a couple pieces of electronic test equipment, the MicroMind microcomputer system, and the Smart ASCII terminal .
The term electronic civil disobedience and hacktivism may be used synonymously, although some commentators maintain that the difference is that ECD actors don’t hide their names, while most hacktivists wish to remain anonymous. Some commentators maintain that ECD uses only legal means, as opposed to illegal actions used by hacktivists.