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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.
A QT interval is a value that is measured on an electrocardiogram. Measurements begin from the start of the Q wave to the end of the T wave. The value is an indication of the time it takes for a ventricle from the beginning of a contraction to the end of relaxation.
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]
Frederica Darema is a Greek American physicist. She proposed the SPMD programming model in 1984 and Dynamic Data Driven Application Systems (DDDAS) in 2000. She was elected IEEE Fellow in 2004.
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.
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's mother died on 22 May 1782 after giving birth to her tenth child. Two years later (28 September 1784), her father remarried the younger sister of his deceased wife, Princess Charlotte of Hesse-Darmstadt, but this union ended just one year later, when Charlotte died of complications resulting from childbirth on 12 December 1785.