Africa and De viris illustribus were partially inspired by Petrarch's visit to Rome in 1337. According to Bergin and Wilson (p. ix). It seems very likely that the inspirational vision of the Eternal City must have been the immediate spur to the design of the Africa and probably De viris illustribus as well. After returning from his grand tour, the first sections of Africa were written in the valley of Vaucluse. Petrarch recalls
The fact that he abandoned it early on is not entirely correct since it was far along when he received two invitations (from Rome and from Paris) in September 1340 each asking him to accept the crown as poet laureate. A preliminary form of the poem was completed in time for the laurel coronation April 8, 1341 (Easter Sunday).
Africa is 2009 Perpetuum Jazzile album. By large most successful song from the album is a capella version of Toto's "Africa", the performance video of which has received more than 15 million YouTube views since its publishing in May 2009 until September 2013.
Africa is a 1930 Walter Lantz cartoon short featuring Oswald the Lucky Rabbit.
Oswald was riding through the Egyptian desert on his camel. The camel, though looking real on the exterior, is actually mechanical because of the two ball-shaped pistons inside which Oswald manipulates with his feet like bike pedals. One day, a lion was running toward them. To defend himself, Oswald brought out a rifle but it malfunctioned. As a final resort, Oswald fired the ball pistons from the camel like a cannon and aimed into the lion's mouth. Terrified by its lumpy back, the lion runs away in panic.
Nearby where he is, Oswald saw an oasis and a palace. Upon seeing the apes dance and play instruments, the curious rabbit decides to join the fun. As he entered the palace, Oswald was greeted by the queen. The queen asked him who he is, and Oswald introduced himself in a song as well as giving advice for a possibly better lifestyle. Pleased by his visit, the queen asked Oswald if he would like to be her king. Oswald was at first uncertain, knowing he never met a queen, but immediately accepted. It turns out momentarily that the queen still has a king who shows up then throws Oswald out of the palace and into a pond full of crocodiles. Luckily, Oswald escapes unscathed and runs off into the desert.
Net or netting is any textile in which the yarns are fused, looped or knotted at their intersections, resulting in a fabric with open spaces between the yarns. Net has many uses, and come in different varieties. Depending on the type of yarn or filament that is used to make up the textile, its characteristics can vary from durable to not durable.
People use net for many different occupations. Netting is one of the key components to fishing in mass quantities. This textile is used because of its sturdy yet flexible origin, which can carry weight yet, still be lightweight and compactable. Fisherman use netting when trawling, because it is sturdy enough to carry large amounts of weight as fish are trapped, pulled, then lifted out of water. Oftentimes, the filaments that make up the yarn are coated with wax or plastic. This coating adds a waterproof component to the textile that provides even more reliability.
Net is also used in medical practices to provide fabric insulation and wrapping under an industry standard sling. In the medical practice, netting provides cushion and protection, when used in layers, but still allows the skin to breathe under the fabric. Depending on what the netting is being used for, a different wax or plastic coating can be applied in order to cover the filaments that use up the yarn. Filaments can be made from synthetic or natural fibres, but that is all up to the manufacturer when deciphering what the textiles future entails. When netting is going to be exposed to water or heat often, manufacturers consider that and apply what best fits that textile.
In geometry the net of a polyhedron is an arrangement of edge-joined polygons in the plane which can be folded (along edges) to become the faces of the polyhedron. Polyhedral nets are a useful aid to the study of polyhedra and solid geometry in general, as they allow for physical models of polyhedra to be constructed from material such as thin cardboard.
An early instance of polyhedral nets appears in the works of Albrecht Dürer.
Existence and uniqueness
Many different nets can exist for a given polyhedron, depending on the choices of which edges are joined and which are separated. Conversely, a given net may fold into more than one different convex polyhedron, depending on the angles at which its edges are folded and the choice of which edges to glue together. If a net is given together with a pattern for gluing its edges together, such that each vertex of the resulting shape has positive angular defect and such that the sum of these defects is exactly 4π, then there necessarily exists exactly one polyhedron that can be folded from it; this is Alexandrov's uniqueness theorem. However, the polyhedron formed in this way may have different faces than the ones specified as part of the net: some of the net polygons may have folds across them, and some of the edges between net polygons may remain unfolded. Additionally, the same net may have multiple valid gluing patterns, leading to different folded polyhedra.
"Offshore", when used relative to hydrocarbons, refers to an oil, natural gas or condensate field that is under the sea, or to activities or operations carried out in relation to such a field. There are various types of platform used in the development of offshore oil and gas fields, and subsea facilities.