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RK Zamet Players
RK may refer to: Science and technology * Radial keratotomy, a surgical procedure on the eye * Rhodopsin kinase, an enzyme * r/K selection theory, in biology, relating to the trade-off between quantity and quality of offspring * Runge–Kutta methods, in numerical analysis Airlines * Royal Khmer Airlines (former IATA code: RK), ceased operations 2007 * R Airlines (former IATA code: RK), ceased operations 2018 * Ryanair UK (IATA code: RK), UK based subsidiary airline of Ryanair Other uses * Raising Kaine, a defunct Virginia political blog * Reichskommissariat, a historical Nazi territorial division * Rangkasbitung railway station, station code RK * Ridwan Kamil, former governor of West Java province since 2018-2023 See also * RK (), Finnish assault rifles; for example RK 62 * Republic of Korea (ROK) * Republic of Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a landlocked country primarily in Central Asia, with a European Kazakhstan, small portion in East ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radial Keratotomy
Radial keratotomy (RK) is a refractive surgery, refractive surgical procedure to correct myopia (nearsightedness). It was developed in 1974 by Svyatoslav Fyodorov, a Russian Ophthalmology, ophthalmologist. It has been largely supplanted by newer, more accurate operations, such as photorefractive keratectomy, LASIK, Epi-LASIK and the Intraocular lens#Intraocular lenses for correcting refractive errors, phakic intraocular lens. Procedure When performing RK, incisions are made with a diamond knife. The incisions relax the steep central cornea in patients with myopia in order to achieve a decreased need for correction. The original technique – consisting of incisions from periphery to center – was called the "Russian technique", while the later advances of performing controlled incision from center to periphery was called the "American technique".Gulani AC, Fyodorov S: Future Directions in Vision course, June 1997 RK may be performed with different types, numbers, and patterns of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodopsin Kinase
Rhodopsin kinase (, ''rod opsin kinase'', ''G-protein-coupled receptor kinase 1'', ''GPCR kinase 1'', ''GRK1'', ''opsin kinase'', ''opsin kinase (phosphorylating)'', ''rhodopsin kinase (phosphorylating)'', ''RK'', ''STK14'') is a serine/threonine-specific protein kinase involved in phototransduction. This enzyme catalyses the following chemical reaction: : ATP + rhodopsin \rightleftharpoons ADP + phospho-rhodopsin Mutations in rhodopsin kinase are associated with a form of night blindness called Oguchi disease. Function and mechanism of action Rhodopsin kinase is a member of the family of G protein-coupled receptor kinases, and is officially named G protein-coupled receptor kinase 1, or GRK1. Rhodopsin kinase is found primarily in mammalian retinal rod cells, where it phosphorylates light-activated rhodopsin, a member of the family of G protein-coupled receptors that recognizes light. Phosphorylated, light-activated rhodopsin binds to the protein arrestin to terminate t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
R/K Selection Theory
In ecology, selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of offspring. The focus on either an increased quantity of offspring at the expense of reduced individual parental investment of -strategists, or on a reduced quantity of offspring with a corresponding increased parental investment of -strategists, varies widely, seemingly to promote success in particular environments. The concepts of quantity or quality offspring are sometimes referred to as "cheap" or "expensive", a comment on the expendable nature of the offspring and parental commitment made. The stability of the environment can predict if many expendable offspring are made or if fewer offspring of higher quality would lead to higher reproductive success. An unstable environment would encourage the parent to make many offspring, because the likelihood of all (or the majority) of them surviving to adulthood is slim. In contrast, more stab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Runge–Kutta Methods
In numerical analysis, the Runge–Kutta methods ( ) are a family of Explicit and implicit methods, implicit and explicit iterative methods, List of Runge–Kutta methods, which include the Euler method, used in temporal discretization for the approximate solutions of simultaneous nonlinear equations. These methods were developed around 1900 by the German mathematicians Carl Runge and Wilhelm Kutta. The Runge–Kutta method The most widely known member of the Runge–Kutta family is generally referred to as "RK4", the "classic Runge–Kutta method" or simply as "the Runge–Kutta method". Let an initial value problem be specified as follows: : \frac = f(t, y), \quad y(t_0) = y_0. Here y is an unknown function (scalar or vector) of time t, which we would like to approximate; we are told that \frac, the rate at which y changes, is a function of t and of y itself. At the initial time t_0 the corresponding y value is y_0. The function f and the initial conditions t_0, y_0 are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Khmer Airlines
Royal Khmer Airlines was a small airline based in Phnom Penh, Cambodia. It operated scheduled passenger services out of Phnom Penh International Airport and Angkor International Airport.Flight International 12–18 April 2005 History Finally, Royal Khmer Airlines acquired aging Boeing 737-200, which was put in service on 15 May 2004, and subsequently started scheduled passenger operations. These services proved to be unreliable and during much of 2005, the airline was inoperative. In November 2011, the airline was shut down. Fleets Royal Khmer Airlines had 04 fleets and all are Boeing 737-200 such as XU-RKA, XU-RKB, XU-RKC, XU-RKH Destinations Royal Khmer Airlines published its last flight timetable in late 2006, which listed the following scheduled destinations: * - Cambodia ** Phnom Penh ( Pochentong International Airport) ** Siem Reap ( Angkor International Airport) * - Korea, South **Seoul ( Incheon International Airport) * - Vietnam **Hanoi ( Noi Bai International A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
R Airlines
R Airlines, legally incorporated as ''Skyview Airways Co. Ltd.'', was a Thai charter airline headquartered in the Don Mueang District, Bangkok and based out of nearby Don Mueang International Airport. It ceased operations on 18 February 2018. History The airline was founded in October 2012 and commenced operations on 24 January 2013. It ceased operations on 18 February 2018. Destinations R Airlines operated to the following destinations within Thailand before the suspension of operations: *Bangkok – Don Mueang International Airport (Primary Hub) *Chiang Mai Chiang Mai, sometimes written as Chiengmai or Chiangmai, is the largest city in northern Thailand, the capital of Chiang Mai province and the List of municipalities in Thailand#Largest cities by urban population, second largest city in Thailan ... – Chiang Mai International Airport * Hat Yai – Hat Yai International Airport * Khon Kaen – Khon Kaen Airport * Narathiwat – Narathiwat Airport * Phitsanulok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryanair UK
Ryanair UK is a British low-cost airline. The airline is the UK subsidiary of the Low-cost carrier, low-cost Irish airline group Ryanair Holdings and a sister airline to Ryanair, Buzz (Ryanair), Buzz and Malta Air. It commenced operations in March 2019. It operates only Boeing 737 Next Generation, Boeing 737-800 aircraft. History Ryanair UK was founded on 30 May 1985 as Dawndell Limited and was renamed Ryan Air UK Limited on 27 June 1985. Since 1 November 1995, the company has been called Ryanair UK Limited. In a statement dated 2 January 2018, Ryanair announced that its subsidiary Ryanair UK filed an application with the Civil Aviation Authority (United Kingdom), Civil Aviation Authority for an air operator's certificate on 21 December 2017, in anticipation of a potential "hard Brexit". Its first Boeing 737 Next Generation, Boeing 737-800, registered as G-RUKA, was transferred to Ryanair UK in December 2018. The airline received an air operator's certificate from the Civil Avia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raising Kaine
Raising Kaine (RK) was a leading liberal political blog in Virginia. It functioned as a group blog and community forum for Virginia netroots activists, primarily directed toward helping to elect Democrats and other liberals and progressives in Virginia and nationally. The blog is now defunct. RK was a popular example of a collaborative blog, offering comment and diary posting privileges to its visitors. Lowell Feld and Eric Grim founded it in January 2005, initially to help "raise" Democratic Lieutenant Governor Tim Kaine to the governorship in the 2005 Virginia gubernatorial election. (The term " raising Cain" is idiomatic for causing trouble.) RK also aimed to help elect other Democrats in Virginia, while promoting progressive causes and values. At its peak, RK had an average monthly traffic of about 80,000–100,000 visits. As with many leading state and local blogs, RK ran on the SoapBlox software. The blog ceased operations in late 2008, but its content remained ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reichskommissariat
() is a German word for a type of administrative entity headed by a government official known as a '' Reichskommissar'' (). Although many offices existed, primarily throughout the Imperial German and Nazi periods in a number of fields (ranging from public infrastructure and spatial planning to ethnic cleansing), it is most commonly used to refer to the quasi-colonial administrative territorial entity established by Nazi Germany in several occupied countries during World War II. While officially located outside the German Reich in a legal sense, these entities were directly controlled by their supreme civil authorities (the ''Reichskommissars''), who ruled their territories as German governors on behalf of and as representatives of Adolf Hitler. The introduction of these territorial administrations served a number of purposes. Those established or planned to be established in Western and Northern Europe were in general envisioned as the transitional phases for the incorpo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rangkasbitung Railway Station
Rangkasbitung Station (RK) is a list of railway stations in Indonesia, railway station located in East Muara Ciujung, Rangkasbitung, Lebak Regency, Banten. It is the main station of Lebak Regency. This station has a small rail yard to keep passenger coaches and goods carriages. This yard also keeps locomotives from Jakarta, which serve trains from . All train services that pass this station stop at this station. Since 1 April 2017, KRL Commuterline has commenced operations from Tanah Abang railway station, Tanah Abang Station to Rangkasbitung Station, formerly terminating at Maja railway station, Maja Station. Therefore, local services such as Kalimaya, Langsam, and Rangkas Jaya, which terminate at and Tanah Abang Station, have stopped operations. Starting on 3 November 2020, the elimination of single-trip card (''Tiket Harian Berjaminan'' or THB card) sales was carried out at this station in stages to reduce passenger contact in anticipation of the transmission of COVID-19. Howe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridwan Kamil
Mochamad Ridwan Kamil (born 4 October 1971), alternatively Kang Emil or RK, is an Indonesian architect and politician who was the 15th Governor of West Java, the largest (most populous) province of Indonesia. He was also the List of mayors of Bandung, mayor of Bandung from 2013 to 2018. As an architect, he designed iconic structures in Indonesia and other countries in Asia with his Urbane architectural firm and lectured at the Department of Architecture, Bandung Institute of Technology. Personal life Born in Bandung, Ridwan Kamil is the second child of an academic at Padjadjaran University, namely Atje Misbach Muhjiddin. He studied at SDN Banjarsari III Bandung between 1978 and 1984, SMP Negeri 2 Bandung between 1984–1987 and SMA Negeri 3 Bandung between 1987 and 1990. Ridwan Kamil then continued his tertiary education at the Bandung Institute of Technology and graduated in 1995 with a Bachelor of Engineering degree in architecture. Then, he continued his studies at Univers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Java
West Java (, ) is an Indonesian Provinces of Indonesia, province on the western part of the island of Java, with its provincial capital in Bandung. West Java is bordered by the province of Banten and the country's capital region of Jakarta to the west, the Java Sea to the north, the province of Central Java to the east and the Indian Ocean to the south. With Banten, this province is the native homeland of the Sundanese people, the Ethnic groups in Indonesia, second-largest ethnic group in Indonesia. West Java was one of the first eight provinces of Indonesia formed following the Proclamation of Indonesian Independence, country's independence proclamation and was later legally re-established on 14 July 1950. In 1966, the city of Jakarta was split off from West Java as a 'special capital region' (), with a status equivalent to that of a province, while in 2000 the western parts of the province were in turn split away to form a separate Banten province. Even following these split- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
