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Canon FD Lens Mount
The Canon FD lens mount is a physical standard for connecting a photographic lens to a 35mm single-lens reflex camera body. The standard was developed by Canon of Japan and was introduced in March 1971 with the Canon F-1 camera. It served as the Canon SLR interchangeable lens mounting system until the 1987 introduction of the Canon EOS series cameras, which use the newer EF lens mount. The FD mount lingered through the release of the 1990 Canon T60, the last camera introduced in the FD system, and the end of the Canon New F-1 product cycle in 1992. The FD mount was based upon and replaced Canon's earlier FL mount (which in turn had replaced the R mount); FD-mount cameras can use FL lenses in stop-down metering mode. Though never officially explained by Canon, others have attempted to assign a meaning to the "FD" designation. One such attempt states that the "FD" notation stands for "Focal-plane shutter with Dual linkage for diaphragm control"; in actuality, there were t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazda RX-7 (FD)
The Mazda RX-7 is a front-engine, rear-wheel-drive, rotary engine-powered sports car that was manufactured and marketed by Mazda from 1978 until 2002 across three generations, all of which made use of a compact, lightweight Wankel rotary engine. The first generation of the RX-7, SA (early) and FB (late), was a two-seater 2 door hatchback coupé. It featured a 12A carbureted rotary engine as well as the option for a 13B with electronic fuel injection in later years. The second generation of RX-7, known as the FC, was offered as a 2-seater coupé with a 2+2 option available in some markets, as well as in a convertible bodystyle. This was powered by the 13B rotary engine, offered in naturally aspirated or turbocharged forms. The third generation of the RX-7, known as the FD, was offered a 2+2-seater coupé with a limited run of a 2-seater option. This featured a sequentially turbocharged 13B REW engine. More than 800,000 were manufactured over its lifetime. __TOC__ First gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fixed Deposit
A fixed deposit (FD) is a financial instrument provided by banks or NBFCs which provides investors a higher rate of interest than a regular savings account, until the given maturity date. It may or may not require the creation of a separate account. It is known as a term deposit or time deposit in Canada, Australia, New Zealand, fixed deposit in India and the United States, and as a bond in the United Kingdom and for a fixed deposit is that the money cannot be withdrawn from the FD as compared to a recurring deposit or a demand deposit before maturity. Some banks may offer additional services to FD holders such as loans against FD certificates at competitive interest rates. It's important to note that banks may offer lesser interest rates under uncertain economic conditions. The interest rate varies between 4 and 7.50 percent. The tenure of an FD can vary from 7, 15 or 45 days to 1.5 years and can be as high as 10 years. These investments are safer than Post Office Schemes as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Locomotive Class FD
The Soviet locomotive class FD (russian: ФД; ) was a Soviet main freight steam locomotive type named after Felix Dzerzhinsky (russian: Феликс Дзержинский; ). Between 1932 and 1942, 3213 FD series locomotives were built. History The locomotive was created in connection with the industrialization conducted in the USSR. Planning took only 100 days, and typical construction time was 170 days. For certain features the design engineers referred to American practice in steam locomotive design. The first locomotive was built at the October Revolution Locomotive Factory in Luhansk, Ukrainian SSR (Luhansk, Ukraine) in 1931 and sent for a show to Moscow. Tests, in which the locomotive performed well, were conducted in 1932. In that year the Luhansk October Revolution plant began mass production of FD20 locomotives. Over the course of production their construction got better steadily. From the beginning of the Great Patriotic war in 1941, production was interrupted only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Familial Dysautonomia
Familial dysautonomia (FD), also known as Riley-Day Syndrome, is a rare, progressive, recessive genetic disorder of the autonomic nervous system that affects the development and survival of sensory, sympathetic and some parasympathetic neurons in the autonomic and sensory nervous system. FD results in variable symptoms, including insensitivity to pain, inability to produce tears, poor growth and labile blood pressure (episodic hypertension and postural hypotension). People with FD have frequent vomiting crises, pneumonia, problems with speech and movement, difficulty swallowing, inappropriate perception of heat, pain and taste as well as unstable blood pressure and gastrointestinal dysmotility. Originally reported by Drs. Conrad Milton Riley and Richard Lawrence Day in 1949, FD is one example of a group of disorders known as hereditary sensory and autonomic neuropathies ( HSAN). All HSAN are characterized by widespread sensory dysfunction and variable autonomic dysfunction cau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Functional Dependency
In relational database theory, a functional dependency is a constraint between two sets of attributes in a relation from a database. In other words, a functional dependency is a constraint between two attributes in a relation. Given a relation ''R'' and sets of attributes X,Y \subseteq R, ''X'' is said to functionally determine ''Y'' (written ''X'' → ''Y'') if and only if each ''X'' value in ''R'' is associated with precisely one ''Y'' value in ''R''; ''R'' is then said to ''satisfy'' the functional dependency ''X'' → ''Y''. Equivalently, the projection \Pi_R is a function, i.e. ''Y'' is a function of ''X''. In simple words, if the values for the ''X'' attributes are known (say they are ''x''), then the values for the ''Y'' attributes corresponding to ''x'' can be determined by looking them up in ''any'' tuple of ''R'' containing ''x''. Customarily ''X'' is called the ''determinant'' set and ''Y'' the ''dependent'' set. A functional dependency FD: ''X'' → ''Y'' is called '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FD Phantom
The McDonnell FH Phantom is a twinjet fighter aircraft designed and first flown during World War II for the United States Navy. The Phantom was the first purely jet-powered aircraft to land on an American aircraft carrier and the first jet deployed by the United States Marine Corps. Although only 62 FH-1s had been built by the end of the war it helped prove the viability of carrier-based jet fighters. As McDonnell's first successful fighter, it led to the development of the follow-on F2H Banshee, which was one of the two most important naval jet fighters of the Korean War; combined, the two established McDonnell as an important supplier of navy aircraft. McDonnell chose to bring the name back with the Mach 2–class McDonnell Douglas F-4 Phantom II, the most versatile and widely used western combat aircraft of the Vietnam War era. The FH Phantom was originally designated the FD Phantom, but this was changed as the aircraft entered production. Design and development In early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferredoxin
Ferredoxins (from Latin ''ferrum'': iron + redox, often abbreviated "fd") are iron–sulfur proteins that mediate electron transfer in a range of metabolic reactions. The term "ferredoxin" was coined by D.C. Wharton of the DuPont Co. and applied to the "iron protein" first purified in 1962 by Mortenson, Valentine, and Carnahan from the anaerobic bacterium '' Clostridium pasteurianum''. Another redox protein, isolated from spinach chloroplasts, was termed "chloroplast ferredoxin". The chloroplast ferredoxin is involved in both cyclic and non-cyclic photophosphorylation reactions of photosynthesis. In non-cyclic photophosphorylation, ferredoxin is the last electron acceptor thus reducing the enzyme NADP+ reductase. It accepts electrons produced from sunlight- excited chlorophyll and transfers them to the enzyme ferredoxin: NADP+ oxidoreductase . Ferredoxins are small proteins containing iron and sulfur atoms organized as iron–sulfur clusters. These biological "capacitors" can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Director (aeronautics)
In aviation, a flight director (FD) is a flight instrument that is overlaid on the attitude indicator that shows the pilot of an aircraft the attitude required to execute the desired flight path. Flight directors are mostly commonly used during approach and landing. They can be used with or without autopilot systems. Description Flight director (FD) modes integrated with autopilot systems perform calculations for more advanced automation, like "selected course (intercepting), changing altitudes, and tracking navigation sources with cross winds." FD computes and displays the proper pitch and bank angles required for the aircraft to follow a selected flight path. A simple example: The aircraft flies level on 045° heading at flight level FL150 at indicated airspeed, the FD bars are thus centered. Then the flight director is set to heading 090° and a new flight level FL200. The aircraft must thus turn to the right and climb. This is done by banking to the right while climbing. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nissan FD Engine
The Nissan FD engine is used primarily for Nissan Truck and Bus commercial vehicles. It is a 4 cylinder.Nissan Atlas model H40-H41 Series Workshop Manual FD33 * @ 3600 rpm @ 2000 rpm Nissan Atlas (H40) 1984-1986 FD33T *turbodiesel @ 3600 rpm @ 2000 rpm Nissan Atlas (H40) 1983-1986 Nissan Civilian (W40) 1984-1988 FD35 * @ 3500 rpm @ 2000 rpm Nissan Atlas (H40) 1986-1991 FD35T *turbodiesel @ 3500 rpm @ 2000 rpm Nissan Atlas (SGH40) 1986-1991 FD42 * @ 3200 rpm @ 2000 rpm Nissan Atlas (H41) 1991-1995 orden de encendido fd42 Hi FD46T * DOHC 8-valve @ 3000 rpm @ 1800 rpm Nissan Atlas (H41) 1991-1995 See also * List of Nissan engines This is a list of piston engines developed by Nissan Motors. Engine naming convention Nissan uses a straightforward method of naming their automobile engines. The first few letters identify the engine family. The following digits are the displ ... References {{nissan FD Straight-four engines Diesel engines by model< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
File Descriptor
In Unix and Unix-like computer operating systems, a file descriptor (FD, less frequently fildes) is a process-unique identifier ( handle) for a file or other input/output resource, such as a pipe or network socket. File descriptors typically have non-negative integer values, with negative values being reserved to indicate "no value" or error conditions. File descriptors are a part of the POSIX API. Each Unix process (except perhaps daemons) should have three standard POSIX file descriptors, corresponding to the three standard streams: Overview In the traditional implementation of Unix, file descriptors index into a per-process maintained by the kernel, that in turn indexes into a system-wide table of files opened by all processes, called the . This table records the ''mode'' with which the file (or other resource) has been opened: for reading, writing, appending, and possibly other modes. It also indexes into a third table called the inode table that describes the ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Force Of The Right
Force of the Right ( ro, Forța Dreptei, FD), sometimes translated as Right's Force or Right Force, is a liberal-conservative political party in Romania founded in December 2021 by Ludovic Orban, former National Liberal Party (PNL) president and former Prime Minister of Romania between 2019 and 2020, in opposition to the current leadership of the PNL which is currently officially led by Nicolae Ciucă and unofficially by Klaus Iohannis. History On 3 October 2021, former Romanian PM Ludovic Orban, who had been previously defeated for the leadership of the National Liberal Party (PNL) by Florin Cîțu at the PNL congress held in September 2021 at Romexpo in Bucharest, stated that he is willing "to create a new political construction which would be ready to continue PNL's legacy". In this regard, Orban was walking in the steps of another former PNL Prime Minister, more specifically Călin Popescu-Tăriceanu, who left the PNL earlier in 2015 (also in opposition to Iohannis) in o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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