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Okinawa Yanbaru Seawater Pumped Storage Power Station
The was an experimental hydroelectric power station located in Kunigami, Okinawa, Japan and operated by the Electric Power Development Company. It was the world’s first pumped-storage facility to use seawater for storing energy. Its maximum output was 30 MW. Construction of the plant started in 1987 and was completed in 1999 at a cost of ¥3.2 billion. It was dismantled in 2016. Facility The power station was a pure pumped-storage facility, using the Pacific Ocean as its lower reservoir, with an effective drop of 136 m and maximum flow of 26 m³/s. Its pipelines and pump turbine were installed underground. Its maximum output was approximately 2.1% of the maximum power demand in the Okinawa Island recorded on August 3, 2009. The upper reservoir, artificially excavated, was approximately away from the shoreline and approximately above sea level. It had an octagonal planar shape with a maximum width of . Its maximum depth was and its effective storage capacity was . The enti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kunigami, Okinawa
is a village in Kunigami District, Okinawa Prefecture, Japan. It occupies the north tip of Okinawa Island, with the East China Sea to the west, Pacific Ocean to the east, and villages of Higashi and Ōgimi to the south. As of 2015, the village has a population of 4,908 and a population density of 25.20 persons per km2. The total area is 194.80 km2. History According to ''Chūzan Seikan'', the goddess Amamikyu consecrated the first utaki in Asa Forest at Hedo, in what is now Kunigami; the forest is also mentioned in ''Omoro Sōshi''. Ceramics from the Jōmon-period resemble those found in the Amami Islands. ''Chūzan Seikan'' records the prayers of the Kunigami council for the recovery of Shō Sei after an abortive attempt to occupy Amami Ōshima in 1537, while ''Kyūyō'' recounts the appointment of the son of the Kunigami Oyakata as ''aji'' after the successful takeover of the Amami Islands by Shō Gen in 1571. Kunigami District was established in 1896 and, upon the ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stainless Steel
Stainless steel is an alloy of iron that is resistant to rusting and corrosion. It contains at least 11% chromium and may contain elements such as carbon, other nonmetals and metals to obtain other desired properties. Stainless steel's corrosion resistance, resistance to corrosion results from the chromium, which forms a Passivation (chemistry), passive film that can protect the material and self-healing material, self-heal in the presence of oxygen. The alloy's properties, such as luster and resistance to corrosion, are useful in many applications. Stainless steel can be rolled into Sheet metal, sheets, plates, bars, wire, and tubing. These can be used in cookware, cutlery, surgical instruments, major appliances, vehicles, construction material in large buildings, industrial equipment (e.g., in paper mills, chemical plants, water treatment), and storage tanks and tankers for chemicals and food products. The biological cleanability of stainless steel is superior to both alumi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Infrastructure Completed In 1999
In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J). Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy. Due to mass–energy equivalence, any object that has mass when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flickr
Flickr ( ; ) is an American image hosting and video hosting service, as well as an online community, founded in Canada and headquartered in the United States. It was created by Ludicorp in 2004 and was a popular way for amateur and professional photographers to host high-resolution photos. It has changed ownership several times and has been owned by SmugMug since April 20, 2018. Flickr had a total of 112 million registered members and more than 3.5 million new images uploaded daily. On August 5, 2011, the site reported that it was hosting more than 6 billion images. Photos and videos can be accessed from Flickr without the need to register an account, but an account must be made to upload content to the site. Registering an account also allows users to create a profile page containing photos and videos that the user has uploaded and also grants the ability to add another Flickr user as a contact. For mobile users, Flickr has official mobile apps for iOS, Android, and an op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panoramio
Panoramio was a geo-tagging, geo-located tagging, photo sharing Mashup (web application hybrid), mashup active between 2005 and 2016. Photos uploaded to the site were accessible as a layer in Google Earth and Google Maps. The site's goal was to allow Google Earth users to learn more about a given area by viewing the photos that other users had taken at that location. Panoramio was acquired by Google in 2007. In 2009 the website was among 1000 most popular websites worldwide. Panoramio was launched in 2005, and closed on November 4, 2016, although the layer in Google Earth was available until January 2018. Image source URLs are still available. After the acquisition of Panoramio by Google, the headquarters were located in Zurich, in the office building of Google Switzerland, but subsequently were moved to Mountain View, California, Mountain View, California, US. History Panoramio was started in the summer of 2005 by Spanish people, Spanish entrepreneurs Joaquín Cuenca Abela an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Society Of Civil Engineers
is a professional scientific nonprofit organization of the civil engineering field of Japan. It was established as an incorporated association in 1914 and its offices are located in Yotsuya, Shinjuku, Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.468 .... JSCE currently has 35,553 members. History JSCE was established as an incorporated association in 1914. Mission The mission of JSCE is to contribute to the advancement of scientific culture by promoting the field of civil engineering and the expansion of civil engineering activities. Publications Journals Books Magazines Conferences and education Divisions and committees Activities outside Japan Awards and designations References External links JSCE (土木学会) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agency For Natural Resources And Energy
The , is part of the Ministry of Economy, Trade and Industry (METI). It is responsible for Japan's policies regarding energy and natural resources. Established in 1973, the 1973 oil crisis The 1973 oil crisis or first oil crisis began in October 1973 when the members of the Organization of Arab Petroleum Exporting Countries (OAPEC), led by Saudi Arabia, proclaimed an oil embargo. The embargo was targeted at nations that had supp ... became the agency's first challenge. The rising price of fuel oil, and a lack of indigenous supplies, led the agency to promote independent energy development and supply source diversification, in addition to the increased stockpiling of oil supplies. The agency leads Asian countries in energy-saving efforts. External links Agency for Natural Resources and Energy {{Authority control Economy of Japan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Okinawa Electric Power Company
, OEPC or for short, is an electric utility with its exclusive operational area of Okinawa Prefecture, Japan. It is the smallest by electricity sales among Japan’s ten regional power utilities, indeed, its electricity sales is approximately 1⁄40 of that of The Tokyo Electric Power Company , also known as or TEPCO, is a Japanese electric utility holding company servicing Japan's Kantō region, Yamanashi Prefecture, and the eastern portion of Shizuoka Prefecture. This area includes Tokyo. Its headquarters are located in Uchis ..., though it is the largest by revenue among companies headquartered in Okinawa. References Companies listed on the Tokyo Stock Exchange Electric power companies of Japan Companies based in Okinawa Prefecture Public utilities established in 1972 Japanese companies established in 1972 Energy companies established in 1972 {{Japan-company-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barnacle
A barnacle is a type of arthropod constituting the subclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings. They are sessile (nonmobile) and most are suspension feeders, but those in infraclass Rhizocephala are highly specialized parasites on crustaceans. They have four nektonic (active swimming) larval stages. Around 1,000 barnacle species are currently known. The name is Latin, meaning "curl-footed". The study of barnacles is called cirripedology. Description Barnacles are encrusters, attaching themselves temporarily to a hard substrate or a symbiont such as a whale ( whale barnacles), a sea snake ('' Platylepas ophiophila''), or another crustacean, like a crab or a lobster (Rhizocephala). The most common among them, "acorn barnacles" ( Sessilia), are sessile where they grow their shells directly onto the substrate. Peduncul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Development Company
The , operating under the brand name J-POWER, formerly , is an electric utility in Japan. It mainly produces electricity from coal and hydroelectric power stations. It also has a few wind farms and is currently building a nuclear plant in Ohma, Aomori prefecture, that is scheduled to begin operations in November 2014. J-Power is the sole operator of the transmission lines connecting the four main islands of Japan. History After World War II, as a part of many changes implemented, the Supreme Commander of the Allied Powers ordered the dismantling of , which at the time provided electricity to all of Japan with a semi-governmental status. This was broken up into a number of utilities, which have become Japan's modern electric utility companies. However, in the battered state of post-war Japan, there were few investors out there to put money in these new companies, and certainly not enough to allow for sufficient R&D of power sources that Japan needed to keep up with the deman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penstock
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. Hydroelectric systems and dams Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank. They can be a combination of many components such as anchor block, drain valve, air bleed valve, and support piers depending on the application. Flow is regulated by turbine operation and is nil when turbines are not in service. Penstocks, particularly where used in polluted water systems, need to be maintained by hot water washing, manual cleaning, antifouling coatings, and desiccation. The term is also used in irrigation dams to refer to the channels leading to and from high-pressure sluice gates. Penstocks are also used in mine tailings dam construction. The penstock is usually situated fairly close to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fibre-reinforced Plastic
Fibre-reinforced plastic (FRP; also called fibre-reinforced polymer, or in American English ''fiber'') is a composite material made of a polymer matrix reinforced with fibres. The fibres are usually glass (in fibreglass), carbon (in carbon-fibre-reinforced polymer), aramid, or basalt. Rarely, other fibres such as paper, wood, or asbestos have been used. The polymer is usually an epoxy, vinyl ester, or polyester thermosetting plastic, though phenol formaldehyde resins are still in use. FRPs are commonly used in the aerospace, automotive, marine, and construction industries. They are commonly found in ballistic armour and cylinders for self-contained breathing apparatuses. Process definition A polymer is generally manufactured by step-growth polymerization or addition polymerization. When combined with various agents to enhance or in any way alter the material properties of polymers, the result is referred to as a plastic. Composite plastics refers to those types of plastic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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