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Hace 4 días · Atrial fibrillation ( AF, AFib or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by rapid and irregular beating of the atrial chambers of the heart. [11] [12] It often begins as short periods of abnormal beating, which become longer or continuous over time. [4] It may also start as other forms of arrhythmia such as atrial flutter that then transform into AF. [13]
Hace 3 días · Medallas de Honor de Oro. Excma. Sra. Dña. Hissa Abdulla Al-Otaiba, Embajadora de los Emiratos Árabes Unidos en España. Excmo. Sr. D. Giles Paxman, Embajador Británico en España, Teniente de la Real Orden Victoriana.
Hace 2 días · Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power and hydropower. Bioenergy and geothermal power are also significant in some countries. Some also consider nuclear power a renewable power source ...
Hace 4 días · Ireland ( / ˈaɪərlənd / ⓘ IRE-lənd; Irish: Éire [ˈeːɾʲə] ⓘ; Ulster-Scots: Airlann [ˈɑːrlən]) is an island in the North Atlantic Ocean, in north-western Europe. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the second-largest island of the British Isles, the third-largest in Europe, and the twentieth ...
Hace 2 días · Asia shares the landmass of Eurasia with Europe, and of Afro-Eurasia with both Europe and Africa. In general terms, it is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean, and on the north by the Arctic Ocean. The border of Asia with Europe is a historical and cultural construct, as there is no clear physical and geographical separation between them. It is somewhat ...
Hace 3 días · Cristiano Ronaldo dos Santos Aveiro GOIH ComM ( Portuguese pronunciation: [kɾiʃˈtjɐnu ʁɔˈnaldu] (born 5 February 1985), better known as Ronaldo, is a Portuguese professional footballer who plays as a forward. He is the captain of the Portuguese national team, and he is currently playing at Saudi Arabian football club Al Nassr .
Hace 4 días · Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and written forms, and may also be conveyed through sign languages. Human language is characterized by its cultural and historical diversity, with significant variations observed ...
