The Cenozoic ( SEE-nə-ZOH-ik, SEN-ə-; lit. 'new life') is Earth's current geological era, representing the last 66 million years of Earth's history. It is characterised by the dominance of mammals, birds and flowering plants, a cooling and drying climate, and the current configuration of continents. It is the latest of three geological eras since complex life evolved, preceded by the Mesozoic and Paleozoic. It started with the Cretaceous–Paleogene extinction event, when many species, including the non-avian dinosaurs, became extinct in an event attributed by most experts to the impact of a large asteroid or other celestial body, the Chicxulub impactor. The Cenozoic is also known as the Age of Mammals because the terrestrial animals that dominated both hemispheres were mammals – the eutherians (placentals) in the northern hemisphere and the metatherians (marsupials, now mainly restricted to Australia and to some extent...

A prescription, often abbreviated ℞ or Rx, is a formal communication from a physician or other registered health-care professional to a pharmacist, authorizing them to dispense a specific prescription drug for a specific patient. Historically, it was a physician's instruction to an apothecary listing the materials to be compounded into a treatment—the symbol ℞ (a capital letter R, crossed to indicate abbreviation) comes from the first word of a medieval prescription, Latin: Recipere ("Take thou"), that gave the list of the materials to be compounded. Format and definition For a communication to be accepted as a legal medical prescription, it needs to be filed by a qualified dentist, advanced practice nurse, physician or veterinarian, for whom the medication prescribed is within their scope of practice to prescribe. This is regardless of whether the prescription includes prescription drugs, controlled substances or over-the-counter treatments.Prescriptions may be entered into...

CSS Sumter, converted from the 1859-built merchant steamer Habana, was the first steam cruiser of the Confederate States Navy during the American Civil War. She operated as a commerce raider in the Caribbean and in the Atlantic Ocean against Union merchant shipping between July and December 1861, taking eighteen prizes, but was trapped in Gibraltar by Union Navy warships. Decommissioned, she was sold in 1862 to the British office of a Confederate merchant and renamed Gibraltar, successfully running the Union blockade in 1863 and surviving the war. Construction and merchant service before the American Civil War The wood-hulled merchant steamship Habana was built in 1859 at the Philadelphia shipyard of Birely & Lynn for Captain James McConnell's New Orleans & Havana Steam Navigation Co. She was powered by a 400-horsepower steam engine made by Neafie, Levy & Co, also of Philadelphia, driving a single propeller and was also rigged for sail, generally described as bark rigged. She was variously reported...

Doo-wop (also spelled doowop and doo wop) is a genre of rhythm and blues music that originated in African-American communities during the 1940s, mainly in the large cities of the United States, including New York, Philadelphia, Pittsburgh, Chicago, Baltimore, Newark, Detroit, Washington, DC, and Los Angeles. It features vocal group harmony that carries an engaging melodic line to a simple beat with little or no instrumentation. Lyrics are simple, usually about love, sung by a lead vocal over background vocals, and often featuring, in the bridge, a melodramatically heartfelt recitative addressed to the beloved. Harmonic singing of nonsense syllables (such as "doo-wop") is a common characteristic of these songs. Gaining popularity in the 1950s, doo-wop was "artistically and commercially viable" until the early 1960s, but continued to influence performers in other genres. Origins Doo-wop has complex musical, social, and commercial origins. Musical precedents Doo-wop's style is a mixture of precedents in composition, orchestration, and vocals...

The Baháʼí Faith is a religion founded in the 19th century that teaches the essential worth of all religions and the unity of all people. Established by Baháʼu'lláh, it initially developed in Iran and parts of the Middle East, where it has faced ongoing persecution since its inception. The religion is estimated to have 5–8 million adherents, known as Baháʼís, spread throughout most of the world's countries and territories. The Baháʼí Faith has three central figures: the Báb (1819–1850), considered a herald who taught his followers that God would soon send a prophet similar to Jesus or Muhammad and who was executed by Iranian authorities in 1850; Baháʼu'lláh (1817–1892), who claimed to be that prophet in 1863 and faced exile and imprisonment for most of his life; and his son, ʻAbdu'l-Bahá (1844–1921), who was released from confinement in 1908 and made teaching trips to Europe and the United States. After ʻAbdu'l-Bahá's death in 1921, the leadership of the religion fell to his grandson Shoghi Effendi (1897–1957). Baháʼís annually elect local, regional, and national Spiritual Assemblies that govern the religion's affairs, and every five years...

The Baháʼí Faith is a religion founded in the 19th century that teaches the essential worth of all religions and the unity of all people. Established by Baháʼu'lláh, it initially developed in Iran and parts of the Middle East, where it has faced ongoing persecution since its inception. The religion is estimated to have 5–8 million adherents, known as Baháʼís, spread throughout most of the world's countries and territories. The Baháʼí Faith has three central figures: the Báb (1819–1850), considered a herald who taught his followers that God would soon send a prophet similar to Jesus or Muhammad and who was executed by Iranian authorities in 1850; Baháʼu'lláh (1817–1892), who claimed to be that prophet in 1863 and faced exile and imprisonment for most of his life; and his son, ʻAbdu'l-Bahá (1844–1921), who was released from confinement in 1908 and made teaching trips to Europe and the United States. After ʻAbdu'l-Bahá's death in 1921, the leadership of the religion fell to his grandson Shoghi Effendi (1897–1957). Baháʼís annually elect local, regional, and national Spiritual Assemblies that govern the religion's affairs, and every five years...

Electrostatics is a branch of physics that studies electric charges at rest (static electricity). Since classical times, it has been known that some materials, such as amber, attract lightweight particles after rubbing. The Greek word for amber, ἤλεκτρον (ḗlektron), was thus the source of the word 'electricity'. Electrostatic phenomena arise from the forces that electric charges exert on each other. Such forces are described by Coulomb's law. Even though electrostatically induced forces seem to be rather weak, some electrostatic forces are relatively large. The force between an electron and a proton, which together make up a hydrogen atom, is about 36 orders of magnitude stronger than the gravitational force acting between them. There are many examples of electrostatic phenomena, from those as simple as the attraction of plastic wrap to one's hand after it is removed from a package, to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and photocopier & laser...

A culture minister or a heritage minister is a common cabinet position in governments. The culture minister is typically responsible for cultural policy, which often includes arts policy (direct and indirect support to artists and arts organizations) and measures to protect the national heritage of a country and cultural expression of a country or subnational region. This responsibility usually manifests in the accompanying ministry (also called a "department"), governing the following: an official registry of protected historic sites and other sites of cultural importance maintaining national archives of cultural work, including public museums, galleries and libraries creating a department or ministry of culture or arts creating arts councils, which disburse funding to artists and arts organization providing funding to artists and arts institutionsIn some countries or subnational jurisdictions (e.g., provinces or regions), the minister of culture may also be responsible for sport, youth issues, or tourism (e.g., in Turkey). In a few cases, the minister of culture is also responsible for foreign affairs ...

A film blowing machine involves one process used to make plastic film. Extruded tubular processing is most often used with polyethylene films but can be used with other polymers. The film may be laminating film, shrink film, agricultural covering film, bags or film for textiles and clothing, and other packaging materials. Technical information Parts include: screw and barrel, motor, inverter, heaters, die head, winder, and tower. The main motor may have frequency control of motor speed to improve speed regulation and save electricity. The screw and material barrel may be made from a nitrogen-treated chromium-molybdenum-aluminum alloy. Process At the beginning of the process, the polymer comes in the form of a pellet. it is heated and melted into a viscous liquid between rotating screws and barrels of the extruder. This allows for the polymer to be fed through a die that shapes it in the form of a tube. This tube is then carefully inflated, so there is no risk of tearing, into a bubble by injecting it with air. The bubble is simultaneously being cooled in its interior, via...