Hace 1 día · Fentanyl, also spelled fentanil, is a potent opioid used as a pain medication. Together with other drugs, fentanyl is used for anesthesia.  It is also used illicitly as a recreational drug, sometimes mixed with heroin, cocaine, benzodiazepines or methamphetamine. Its potentially deadly overdose effects can be neutralized by naloxone. 
Hace 20 horas · Deaths in 2022. The following notable deaths occurred in 2022. Names are reported under the date of death, in alphabetical order. A typical entry reports information in the following sequence: Name, age, country of citizenship at birth, subsequent nationality (if applicable), what subject was noted for, cause of death (if known), and reference.
Hace 1 día · Including its Atlantic islands, Brazil lies between latitudes 6°N and 34°S, and longitudes 28° and 74°W.  Brazil is the fifth largest country in the world, and third largest in the Americas, with a total area of 8,515,767.049 km 2 (3,287,956 sq mi),  including 55,455 km 2 (21,411 sq mi) of water.
hace 2 días · In mathematics, the determinant is a scalar value that is a function of the entries of a square matrix. It allows characterizing some properties of the matrix and the linear map represented by the matrix. In particular, the determinant is nonzero if and only if the matrix is invertible and the linear map represented by the matrix is an isomorphism.
hace 4 días · In der Metropolregion Frankfurt/Rhein-Main (Rhein-Main-Gebiet) leben etwa 5,8 Millionen Menschen.  Seit dem Mittelalter gehört Frankfurt am Main zu den bedeutenden städtischen Zentren Deutschlands. Im Jahr 794 erstmals urkundlich erwähnt, war es seit 1372 Reichsstadt.
hace 2 días · The universe ( Latin: universus) is all of space and time [a] and their contents,  including planets, stars, galaxies, and all other forms of matter and energy. The Big Bang theory is the prevailing cosmological description of the development of the universe.
hace 2 días · The Antikythera mechanism, dating back to ancient Greece circa 150–100 BC, is an early analog computing device. The Antikythera mechanism is believed to be the earliest known mechanical analog computer, according to Derek J. de Solla Price.  It was designed to calculate astronomical positions.