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In electrical and safety engineering, hazardous locations (HazLoc, pronounced haz·lōk) are places where fire or explosion hazards may exist. Sources of such hazards include gases, vapors, dust, fibers, and flyings, which are combustible or flammable. Electrical equipment installed in such locations can provide an ignition source, due to ...
A smart key is an electronic access and authorization system that is available either as standard equipment or an option in several car designs. It was developed by Siemens in 1995 and introduced by Mercedes-Benz under the name "Keyless-Go" in 1998 on the W220 S-Class , [1] after the design patent was filed by Daimler-Benz on May 17, 1997.
Thyroid hormones are any hormones produced and released by the thyroid gland, namely triiodothyronine ( T3) and thyroxine ( T4 ). They are tyrosine -based hormones that are primarily responsible for regulation of metabolism. T 3 and T 4 are partially composed of iodine, derived from food. [2] A deficiency of iodine leads to decreased production ...
Aktion T4 Hitler's order for Aktion T4 Also known as T4 Program Location German-occupied Europe Date September 1939 – 1945 Incident type Forced euthanasia Perpetrators SS Participants Psychiatric hospitals Victims 275,000–300,000 [a] Aktion T4 (German) was a campaign of mass murder by involuntary euthanasia in Nazi Germany. The term was first used in post- war trials against doctors who ...
Triiodothyronine, also known as T3, is a thyroid hormone. It affects almost every physiological process in the body, including growth and development, metabolism, body temperature, and heart rate. [1]
Car key. A car key or an automobile key is a key used to open and/or start an automobile. Modern key designs are usually symmetrical, and some use grooves on both sides, rather than a cut edge, to actuate the lock. It has multiple uses for the automobile with which it was sold. A car key can open the doors, as well as start the ignition, open ...
An operating temperature is the allowable temperature range of the local ambient environment at which an electrical or mechanical device operates. The device will operate effectively within a specified temperature range which varies based on the device function and application context, and ranges from the minimum operating temperature to the maximum operating temperature (or peak operating ...
A Boeing 707-100 ordered by Qantas with customer code 38 would be designated as 707-138. A Boeing 717-200 ordered by Hawaiian Airlines with customer code 2A would be designated as 717-22A. A Boeing 727-100 and 727-200 ordered by American Airlines with customer code 23 are designated as 727-023 or 727-123 [note 2] and 727-223, respectively.