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HV
HV or hv or ''variant'', is a two-letter acronym which may refer to: Places * Burkina Faso (WMO country code HV, from the former French name, "Haute Volta" -- Upper Volta) * Hudson Valley, New York State, USA Groups, companies, organizations * Transavia (IATA airline code HV) * Hendrik Vermeulen, a South African fashion label Military units * Heimevernet, a Norwegian military force * Hemvärnet, a Swedish military force * Hrvatska Vojska, the Croatian army * , the Danish home guard Electronics and electrics * High voltage, in electricity distribution * hectovolt (hV), a unit of 100 volts * Hasselblad HV, a digital system camera based on the Sony α SLT-A99V * Home video, pre-recorded media for home entertainment Transportation * High Volume, a term often used for kayak sizes * Hybrid vehicles, which use two or more distinct types of power * Hydrogen vehicle, powered by hydrogen Science and technology * Absolute visual magnitude, or V-band magnitude, HV * Mitochondrial DNA Hap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humanae Vitae
''Humanae vitae'' (Latin: ''Of Human Life'') is an encyclical written by Pope Paul VI and dated 25 July 1968. The text was issued at a Vatican press conference on 29 July. Subtitled ''On the Regulation of Birth'', it re-affirmed the teaching of the Catholic Church regarding married love, responsible parenthood, and the rejection of artificial contraception. In formulating his teaching he explained why he did not accept the conclusions of the Pontifical Commission on Birth Control established by his predecessor, Pope John XXIII, a commission he himself had expanded. Mainly because of its restatement of the Church's opposition to artificial contraception, the encyclical was politically controversial. It affirmed traditional Church moral teaching on the sanctity of life and the procreative and unitive nature of conjugal relations. It was the last of Paul's seven encyclicals. Summary Affirmation of traditional teaching In this encyclical Paul VI reaffirmed the Catholic Church's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burkina Faso
Burkina Faso (, ; , ff, 𞤄𞤵𞤪𞤳𞤭𞤲𞤢 𞤊𞤢𞤧𞤮, italic=no) is a landlocked country in West Africa with an area of , bordered by Mali to the northwest, Niger to the northeast, Benin to the southeast, Togo and Ghana to the south, and the Ivory Coast to the southwest. It has a population of 20,321,378. Previously called Republic of Upper Volta (1958–1984), it was renamed Burkina Faso by President Thomas Sankara. Its citizens are known as ''Burkinabè'' ( ), and its capital and largest city is Ouagadougou. The largest ethnic group in Burkina Faso is the Mossi people, who settled the area in the 11th and 13th centuries. They established powerful kingdoms such as the Ouagadougou, Tenkodogo, and Yatenga. In 1896, it was colonized by the French as part of French West Africa; in 1958, Upper Volta became a self-governing colony within the French Community. In 1960, it gained full independence with Maurice Yaméogo as president. Throughout the decades post in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Vehicle
A hybrid vehicle is one that uses two or more distinct types of power, such as submarines that use diesel when surfaced and batteries when submerged. Other means to store energy include pressurized fluid in hydraulic hybrids. The basic principle with hybrid vehicles is that the different motors work better at different speeds; the electric motor is more efficient at producing torque, or turning power, and the combustion engine is better for maintaining high speed than a typical electric motor. Switching from one to the other at the proper time while speeding up yields a win-win in terms of energy efficiency, such that it translates into greater fuel efficiency. Vehicle types Two-wheeled and cycle-type vehicles Mopeds, electric bicycles, and even electric kick scooters are a simple form of a hybrid, powered by an internal combustion engine or electric motor and the rider's muscles. Early prototype motorcycles in the late 19th century used the same principle. * In a parall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hwair
Hwair (also , , ) is the name of , the Gothic letter expressing the or sound (reflected in English by the inverted '' wh''-spelling for ). Hwair is also the name of the Latin ligature (capital ) used to transcribe Gothic. Name The name of the Gothic letter is recorded by Alcuin in Codex Vindobonensis 795 as ''uuaer''. The meaning of the name ' was probably "cauldron, pot" (cf. ' "skull");Mark 15:22 ' = "Golgatha". comparative reconstruction shows ''*kʷer''- (“a kind of dish or pot”) in Proto-Indo-European. There was no Elder Futhark rune for the phoneme, so that unlike those of most Gothic letters, the name does not continue the name of a rune (but see '' qairþra''). Sound Gothic ' is the reflex of Common Germanic ', which in turn continues the Indo-European labiovelar ''*'' after it underwent Grimm's law. The same phoneme in Old English and Old High German is spelled ''hw''. Transliteration The Gothic letter is transliterated with the Latin ligature of the same name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holiday Village
A holiday village (also abbreviated HV) is a holiday resort where the visitors stay in villas. There is a central area with shops, entertainment, and other amenities. One example is Center Parcs Center Parcs may refer to: * Center Parcs UK and Ireland Center Parcs UK and Ireland (formerly Center Parcs UK) is a short-break holiday company that operates six holiday villages in the United Kingdom and Republic of Ireland, with each cover .... {{Tourism-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holcomb Valley Scout Ranch
{{disambiguation, geo ...
Holcomb may refer to: Places In the United States: * Holcomb, Kansas * Holcomb, Missouri * Holcomb, New York * Holcomb Creek Falls in Georgia * Holcomb Valley near Big Bear Lake, California * Holcomb Gardens on the Butler University campus in Indianapolis * Holcomb Observatory and Planetarium at Butler University Other uses * Holcomb (surname) See also * Holcombe (other) * Justice Holcomb (other) Justice Holcomb may refer to: * Oscar Raymond Holcomb, associate justice and chief justice of the Washington Supreme Court * Silas A. Holcomb, associate justice and chief justice of the Nebraska Supreme Court {{disambiguation, tndis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vickers Hardness
The Vickers hardness test was developed in 1921 by Robert L. Smith and George E. Sandland at Vickers Ltd as an alternative to the Brinell method to measure the hardness of materials. The Vickers test is often easier to use than other hardness tests since the required calculations are independent of the size of the indenter, and the indenter can be used for all materials irrespective of hardness. The basic principle, as with all common measures of hardness, is to observe a material's ability to resist plastic deformation from a standard source. The Vickers test can be used for all metals and has one of the widest scales among hardness tests. The unit of hardness given by the test is known as the Vickers Pyramid Number (HV) or Diamond Pyramid Hardness (DPH). The hardness number can be converted into units of pascals, but should not be confused with pressure, which uses the same units. The hardness number is determined by the load over the surface area of the indentation and not t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypervelocity Star
In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space. Stellar kinematics encompasses the measurement of stellar velocities in the Milky Way and its satellites as well as the internal kinematics of more distant galaxies. Measurement of the kinematics of stars in different subcomponents of the Milky Way including the thin disk, the thick disk, the bulge, and the stellar halo provides important information about the formation and evolutionary history of our Galaxy. Kinematic measurements can also identify exotic phenomena such as hypervelocity stars escaping from the Milky Way, which are interpreted as the result of gravitational encounters of binary stars with the supermassive black hole at the Galactic Center. Stellar kinematics is related to but distinct from the subject of stellar dynamics, which involves the theoretical study or modeling of the motions of stars under the influence of gravity. Stella ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplogroup HV (mtDNA)
Haplogroup HV is a human mitochondrial DNA (mtDNA) haplogroup. Origin Haplogroup HV derives from the haplogroup R0, which in turn descends from haplogroup R. HV is also the ancestral clade to the haplogroups H and V. A possible origin of HV haplogroup is in the region of Western Iran, Mesopotamia, and the South Caucasus, where the highest prevalence of HV has been found. Distribution Haplogroup HV is found mainly in Western Asia, Central Asia, Southern Europe, Eastern Europe, and North Africa. In Africa, the clade peaks among Egyptians inhabiting El-Hayez oasis (14.3%). with the HV0 subclade occurring among Mozabite Berbers (8.24%),S5 Table/ref> Libyans (7.4%), Reguibate Sahrawi (6.48%), Zenata Berbers (5.48%), and Algerians (4.84% total; 2.15%-3.75% in Oran). In a study published in 2013, haplogroup HV(xHV0, H) was found in great percentages of populations in Afghanistan: 11.0% (14/127) Uzbek (including 1/127 HV2 and 1/127 HV6), 8.2% (12/146) Tajik (including 3/146 H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Absolute Visual Magnitude
Absolute magnitude () is a measure of the luminosity of a celestial object on an inverse logarithmic astronomical magnitude scale. An object's absolute magnitude is defined to be equal to the apparent magnitude that the object would have if it were viewed from a distance of exactly , without extinction (or dimming) of its light due to absorption by interstellar matter and cosmic dust. By hypothetically placing all objects at a standard reference distance from the observer, their luminosities can be directly compared among each other on a magnitude scale. As with all astronomical magnitudes, the absolute magnitude can be specified for different wavelength ranges corresponding to specified filter bands or passbands; for stars a commonly quoted absolute magnitude is the absolute visual magnitude, which uses the visual (V) band of the spectrum (in the UBV photometric system). Absolute magnitudes are denoted by a capital M, with a subscript representing the filter band used for meas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogen Vehicle
A hydrogen vehicle is a vehicle that uses hydrogen fuel for motive power. Hydrogen vehicles include hydrogen-fueled space rockets, as well as ships and aircraft. Power is generated by converting the chemical energy of hydrogen to mechanical energy, either by reacting hydrogen with oxygen in a fuel cell to power electric motors or, less commonly, by burning hydrogen in an internal combustion engine. , there are two models of hydrogen cars publicly available in select markets: the Toyota Mirai (2014–), which is the world's first mass-produced dedicated fuel cell electric vehicle (FCEV), and the Hyundai Nexo (2018–). There are also fuel cell buses. Hydrogen aircraft are not expected to carry many passengers long haul before the 2030s at the earliest. As of 2019, 98% of hydrogen is produced by steam methane reforming, which emits carbon dioxide. It can be produced by electrolysis of water, or by thermochemical or pyrolytic means using renewable feedstocks, but the processe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kayak
A kayak is a small, narrow watercraft which is typically propelled by means of a double-bladed paddle. The word kayak originates from the Greenlandic word ''qajaq'' (). The traditional kayak has a covered deck and one or more cockpits, each seating one paddler. The cockpit is sometimes covered by a spray deck that prevents the entry of water from waves or spray, differentiating the craft from a canoe. The spray deck makes it possible for suitably skilled kayakers to roll the kayak: that is, to capsize and right it without it filling with water or ejecting the paddler. ] Some modern boats vary considerably from a traditional design but still claim the title "kayak", for instance in eliminating the cockpit by seating the paddler on top of the boat ("sit-on-top" kayaks); having inflated air chambers surrounding the boat; replacing the single hull with twin hulls; and replacing paddles with other human-powered propulsion methods, such as foot-powered rotational propellers and "fli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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