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Russky Bridge
The Russky Bridge () is a cable-stayed bridge in Vladivostok, Primorsky Krai, Russia. The bridge connects the Russky Island and the Muravyov-Amursky Peninsula sections of the city across the Eastern Bosphorus strait, and with a central span of , it is the List of longest cable-stayed bridge spans, longest cable-stayed bridge in the world. The architect of the Russky Island Bridge is Vlydskinol Ptrov. The Russky Bridge was originally built to serve the APEC 2012, 2012 Asia-Pacific Economic Cooperation conference hosted at the Far Eastern Federal University campus on Russky Island. It was completed in July 2012 and opened by Prime Minister Dmitry Medvedev, and on September 3, 2012, the bridge was officially given its name. Overview The bridge to Russky Island is the world's longest cable-stayed bridge, with a -long central Span (engineering), span. The bridge also has the second-highest Tower, pylons after the Millau Viaduct and the longest cable stays. The design of the bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Bosphorus
The Eastern Bosphorus (Russian: Босфор Восточный, ''Bosfor Vostochny'') is a strait located in Primorsky Krai, Russia, that separates the Muravyov-Amursky Peninsula and Russky Island, and connects Amur Bay and Ussuri Bay within Peter the Great Gulf. The Eastern Bosphorus has a depth of up to and is about long and only wide at its narrowest point. The strait features several bays within the peninsula and Russky Island, including the major Zolotoy Rog bay. Around this bay, most of the city of Vladivostok is located. The Russky Bridge, a cable-stayed bridge connecting the peninsula and Russky Island sections of Vladivostok, was completed in July 2012 and with a span of is the longest cable-stayed bridge in the world as of 2020. See also * * Bosphorus The Bosporus or Bosphorus Strait ( ; , colloquially ) is a natural strait and an internationally significant waterway located in Istanbul, Turkey. The Bosporus connects the Black Sea to the Sea of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
President Of Russia
The president of Russia, officially the president of the Russian Federation (), is the executive head of state of Russia. The president is the chair of the State Council (Russia), Federal State Council and the President of Russia#Commander-in-chief, supreme commander-in-chief of the Russian Armed Forces. It is the highest office in Russia. The modern incarnation of the office emerged from the president of the Russian Soviet Federative Socialist Republic (RSFSR). In 1991, Boris Yeltsin was elected president of the RSFSR, becoming the first non-Communist Party member to be elected into a major Soviet political role. He played a crucial role in the dissolution of the Soviet Union which saw the transformation of the RSFSR into the Russian Federation. Following a series of scandals and doubts about his leadership, violence erupted across Moscow in the 1993 Russian constitutional crisis. As a result, a new constitution was implemented and the 1993 Russian Constitution remains in force ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vladimir Putin
Vladimir Vladimirovich Putin (born 7 October 1952) is a Russian politician and former intelligence officer who has served as President of Russia since 2012, having previously served from 2000 to 2008. Putin also served as Prime Minister of Russia from 1999 to 2000 and again from 2008 to 2012. He is the longest-serving Russian president since the independence of Russia from the Soviet Union. Putin worked as a KGB foreign intelligence officer for 16 years, rising to the rank of Lieutenant colonel (Eastern Europe), lieutenant colonel. He resigned in 1991 to begin a political career in Saint Petersburg. In 1996, he moved to Moscow to join the administration of President Boris Yeltsin. He briefly served as the director of the Federal Security Service (FSB) and then as Secretary of the Security Council of Russia, secretary of the Security Council of Russia before Putin's rise to power, being appointed prime minister in August 1999. Following Yeltsin's resignation, Putin became Actin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultraviolet
Ultraviolet radiation, also known as simply UV, is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs, Cherenkov radiation, and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights. The photons of ultraviolet have greater energy than those of visible light, from about 3.1 to 12 electron volts, around the minimum energy required to ionize atoms. Although long-wavelength ultraviolet is not considered an ionizing radiation because its photons lack sufficient energy, it can induce chemical reactions and cause many substances to glow or fluoresce. Many practical applications, including chemical and biological effects, are derived from the way that UV radiation can interact with organic molecules. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High Density Polyethylene
High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a thermoplastic polymer produced from the monomer ethylene. It is sometimes called "alkathene" or " polythene" when used for HDPE pipes. With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, geomembranes and plastic lumber. HDPE is commonly recycled, and has the number "2" as its resin identification code. In 2008, the global HDPE market reached a volume of more than 30 million tons. Properties HDPE is known for its high strength-to-density ratio. The density of HDPE ranges from 930 to 970 kg/m3. Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. The difference in strength exceeds the difference in density, giving HDPE a higher specific strength. It is also harder and mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galvanized
Galvanization ( also spelled galvanisation) is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which the parts are coated by submerging them in a bath of hot, molten zinc. Protective action The zinc coating, when intact, prevents corrosive substances from reaching the underlying iron. It's main function is to act as a sacrificial anode to prevent the iron from rusting by cathodic protection. Zinc is more reactive than iron, so the zinc coating preferentially oxidizes to zinc carbonate, preventing the iron from corroding, even if there are gaps in the zinc coating. Additional electroplating such as a chromate conversion coating may be applied to provide further surface passivation to the substrate material. History and etymology The process is named after the Italian physician, physicist, biologist and philosopher Luigi Galvani (9 September 1737 – 4 December 1798). The earlies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parallel Strand Stay
A cable-stayed bridge has one or more ''towers'' (or ''pylons''), from which wire rope, cables support the bridge deck. A distinctive feature are the cables or wikt:stay#Etymology 3, stays, which run directly from the tower to the deck, normally forming a fan-like pattern or a series of parallel lines. This is in contrast to the modern suspension bridge, where the cables supporting the deck are suspended vertically from the main cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is optimal for spans longer than cantilever bridges and shorter than suspension bridges. This is the range within which cantilever bridges would rapidly grow heavier, and suspension bridge cabling would be more costly. Cable-stayed bridges found wide use in the late 19th century. Early examples, including the Brooklyn Bridge, often combined features from both the cable-stayed and suspension designs. Cable-stayed designs fell from favor in the early 20th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthotropic Deck
An orthotropic bridge or orthotropic deck is typically one whose fabricated deck consists of a structural steel deck plate stiffened either longitudinally with ribs or transversely, or in both directions. This allows the fabricated deck both to directly bear vehicular loads and to contribute to the bridge structure's overall load-bearing behaviour. The orthotropic deck may be integral with or supported on a grid of deck framing members, such as transverse floor beams and longitudinal girders. All these various choices for the stiffening elements, e.g., ribs, floor beams and main girders, can be interchanged, resulting in a great variety of orthotropic panels. Decks with different stiffnesses in longitudinal and transverse directions are called 'orthotropic'. If the stiffnesses are similar in the two directions, then the deck is called 'isotropic'. The steel deck-plate-and-ribs system may be idealized for analytical purposes as an orthogonal-anisotropic plate, hence the abbrev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiview Orthographic Projection
In technical drawing and computer graphics, a multiview projection is a technique of illustration by which a standardized series of orthographic projection, orthographic two-dimensional pictures are constructed to represent the form of a three-dimensional object. Up to six pictures of an object are produced (called ''primary views''), with each projection plane parallel to one of the coordinate axes of the object. The views are positioned relative to each other according to either of two schemes: ''first-angle'' or ''third-angle'' projection. In each, the appearances of views may be thought of as being ''projected'' onto planes that form a six-sided box around the object. Although six different sides can be drawn, ''usually'' three views of a drawing give enough information to make a three-dimensional object. These three views are known as front view (also elevation view), top view or plan view and end view (also profile view or section view). When the plane or axis of the ob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerodynamic
Aerodynamics () is the study of the motion of atmosphere of Earth, air, particularly when affected by a solid object, such as an airplane wing. It involves topics covered in the field of fluid dynamics and its subfield of gas dynamics, and is an important domain of study in aeronautics. The term ''aerodynamics'' is often used synonymously with gas dynamics, the difference being that "gas dynamics" applies to the study of the motion of all gases, and is not limited to air. The formal study of aerodynamics began in the modern sense in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag were recorded much earlier. Most of the early efforts in aerodynamics were directed toward achieving Aircraft#Heavier-than-air – aerodynes, heavier-than-air flight, which was first demonstrated by Otto Lilienthal in 1891. Since then, the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pairs
Concentration is a round game in which all of the cards are laid face down on a surface and two cards are flipped face up over each turn. The object of the game is to turn over pairs of matching cards. Concentration can be played with any number of players or as a solitaire or patience game. It is a particularly good game for young children, though adults may find it challenging and stimulating as well. The scheme is often used in quiz shows (in fact, several game shows have used its name in their titles) and can be employed as an educational game. Names Concentration is also known by a variety of other names including Memory, Matching Pairs, Match Match, Match Up, Pelmanism, Pexeso or simply Pairs. Rules Any deck of playing cards may be used, although there are also commercial sets of cards with images. The rules given here are for a standard deck of 52 cards, which are normally laid face down in four rows of 13 cards each. The two jokers may be included for a total of si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
