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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 ...
Color temperature is a parameter describing the color of a visible light source by comparing it to the color of light emitted by an idealized opaque, non-reflective body. The temperature of the ideal emitter that matches the color most closely is defined as the color temperature of the original visible light source.
7075 aluminium alloy ( AA7075) is an aluminium alloy with zinc as the primary alloying element. It has excellent mechanical properties and exhibits good ductility, high strength, toughness, and good resistance to fatigue. It is more susceptible to embrittlement than many other aluminium alloys because of microsegregation, but has significantly ...
You won't burn more calories in the heat, but that may be a different story in cold weather. According to the National Institutes of Health, the body works very hard to maintain its internal body ...
ANNUAL INFLATION RATE SINCE 2019. With inflation falling and the economy slowing, Renaissance Macro's Neil Dutta believes it's time for the "Fed to get on with it" and begin cutting interest rates ...
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.
An aluminium alloy ( UK / IUPAC) or aluminum alloy ( NA; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are ...
A fire alarm notification appliance is an active fire protection component of a fire alarm system. A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire or other emergency condition requiring action. Audible appliances have been in use longer than any other method of notification.