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The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart.It is calculated as the time from the start of the Q wave to the end of the T wave, and approximates to the time taken from when the cardiac ventricles start to contract to when they finish relaxing.
The Intel 4004 – a 4-bit CPU (central processing unit) on a single chip – was a member of a family of 4 custom chips designed for Busicom, a Japanese calculator manufacturer. The other members of the family (constituting the MCS-4 family) were: the 4001, a 2k-bit metal-mask programmable ROM with programmable input-output lines; the 4002, a ...
Those affected by short QT syndrome (SQT) have an increased risk of developing abnormal heart rhythms. [3] These abnormal heart rhythms often occur at a young age. They may take relatively benign forms such as atrial fibrillation, leading to symptoms of palpitations, breathlessness, or fatigue. [3]
Fredericia (Danish pronunciation: [fʁeðəˈʁetɕæ]) [3] is a town located in Fredericia Municipality in the southeastern part of the Jutland peninsula in Denmark. The city is part of the Triangle Region, which includes the neighbouring cities of Kolding and Vejle.
Frederica of Hanover (Friederike Luise; Greek: Φρειδερίκη, romanized: Freideríki Luísa; 18 April 1917 – 6 February 1981) was Queen of Greece from 1 April 1947 until 6 March 1964 as the wife of King Paul and the Queen Mother of Greece from 6 March 1964, when her son Constantine II became King, until 8 December 1974, when the monarchy was officially abolished after a referendum.
Frederica is a Regency romance novel by Georgette Heyer. The story is set in 1818. [ 1 ] The plot is typical of several later Heyer romances in counterpointing the courtships of an older and a younger couple, with variation provided by the antics of Frederica's younger brothers and their boisterous mongrel.
Queen Frederica or Queen Frederika may refer to: Frederica Louisa of Hesse-Darmstadt (1751–1805), Queen of Prussia; Frederica of Mecklenburg-Strelitz (1778–1841), Queen of Hanover; Frederica of Baden (1781–1826), Queen of Sweden; Frederica of Hanover (1917–1981), Queen of the Hellenes; SS Queen Frederica, a Chandris Line cruise ship
Frederica Piedade (born 5 June 1982) is a former Portuguese tennis player. Her career-high WTA singles ranking is 142, which she reached on 15 May 2006; her best doubles ranking is No. 158, achieved on 16 February 2009. Piedade has competed for the Portugal Fed Cup team, having a total win–loss record of 12–4.