|
HRR
HRR may refer to: * Haploid-relative-risk, a method for determining gene allele association to a disease * Harrington railway station, in England * Henley Royal Regatta * Healy River Airport, in Alaska, United States * Heart rate reserve *Homologous recombination repair, a major DNA repair pathway that mainly acts on double-strand breaks and interstrand crosslinks * Hirzebruch–Riemann–Roch theorem * ''Historicorum Romanorum reliquiae'', a collection of ancient fragmentary Latin history-works * ''The History of Rock and Roll'', a radio documentary * Holy Roman Empire (German: ') * Hondo Railway The Hondo Railway is a Class III shortline railroad that operates about of trackage to the west of San Antonio, Texas. Roughly half of the railroad's track () is terminal trackage leased from Texas Liquid Terminal, Inc. It was formed in 2006, an ..., an American railway * Horuru language, spoken in Indonesia {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haploid-relative-risk
The Haplotype-relative-risk (HRR) method is a family-based method for determining gene allele association to a disease in the presence of actual genetic linkage. Nuclear families with one affected child are sampled using the parental haplotypes not transmitted as a control. While similar to the genotype relative risk (RR), the HRR provides a solution to the problem of population stratification by only sampling within family trios. The HRR method was first proposed by Rubinstein in 1981 then detailed in 1987 by Rubinstein and Falk and is an important tool in genetic association studies. The original method proposed by Falk and Rubinstien fell under scrutiny in 1989, when Ott showed the equivalence of HRR to the classical RR method demonstrating that the HRR holds only when there is zero chance of recombination between a disease locus and its markers. Yet, even when the recombination factor for a locus and its genetic markers is >0 HRR estimates are still more conservative than RR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart Rate Reserve
Heart rate (or pulse rate) is the frequency of the heartbeat measured by the number of contractions (beats) of the heart per minute (bpm). The heart rate can vary according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide, but is also modulated by numerous factors, including, but not limited to, genetics, physical fitness, stress or psychological status, diet, drugs, hormonal status, environment, and disease/illness as well as the interaction between and among these factors. It is usually equal or close to the pulse measured at any peripheral point. The American Heart Association states the normal resting adult human heart rate is 60–100 bpm. Tachycardia is a high heart rate, defined as above 100 bpm at rest. Bradycardia is a low heart rate, defined as below 60 bpm at rest. When a human sleeps, a heartbeat with rates around 40–50 bpm is common and is considered normal. When the heart is not beating in a regular pattern, this is re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Healy River Airport
Healy River Airport is a state owned, public use airport serving Healy, a community located in the Denali Borough of the U.S. state of Alaska. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a ''general aviation'' facility. Facilities and aircraft Healy River Airport covers an area of 1,294 acres (524 ha) at an elevation of 1,263 feet (385 m) above mean sea level. It has one runway designated 15/33 with an asphalt surface measuring 2,912 by 60 feet (888 x 18 m). For the 12-month period ending December 31, 2005, the airport had 1,300 aircraft operations, an average of 108 per month: 61.5% general aviation and 38.5% air taxi. At that time there were 7 aircraft based at this airport: 85% single-engine and 14% multi-engine. Airlines and destinations See also * Healy Lake Airport in Healy Lake, Alaska ( Southeast Fairbanks Census Area) at coordinates References External links Topographic map as of J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hondo Railway
The Hondo Railway is a Class III shortline railroad that operates about of trackage to the west of San Antonio, Texas. Roughly half of the railroad's track () is terminal trackage leased from Texas Liquid Terminal, Inc. It was formed in 2006, and carries ethanol Ethanol (abbr. EtOH; also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound. It is an alcohol with the chemical formula . Its formula can be also written as or (an ethyl group linked to a ..., food, agricultural products and industrial products. References External links Picture of HRR locomotive {{US Class III - Texas Texas railroads Switching and terminal railroads ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harrington Railway Station
Harrington is a railway station on the Cumbrian Coast Line, which runs between and . The station, situated south-west of Carlisle, serves the villages of Harrington and Salterbeck in Cumbria. It is owned by Network Rail and managed by Northern Trains. Harrington Hump The station came to national prominence in 2008 when it was chosen as the initial site for the installation of an experimental ramp to raise the height of the platform to improve access to modern rolling stock. Christened the Harrington Hump, the ramp was built for £25,000 – 10% of the estimated cost of the conventional rebuilding that would have otherwise been required to make the platform fully DDA compliant. The modular design has since been deployed at several other rural stations across the UK where the cost of platform upgrades would otherwise have been considered prohibitive. Facilities The station is unstaffed (like most others on the route), but now has been provided with a ticket machine to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henley Royal Regatta
Henley Royal Regatta (or Henley Regatta, its original name pre-dating Royal patronage) is a rowing event held annually on the River Thames by the town of Henley-on-Thames, England. It was established on 26 March 1839. It differs from the three other regattas rowed over approximately the same course, Henley Women's Regatta, Henley Masters Regatta, and Henley Town and Visitors' Regatta, each of which is an entirely separate event. The regatta lasts for six days (Tuesday to Sunday) ending on the first weekend in July. Races are head-to-head knock out competitions, raced over a course of . The regatta regularly attracts international crews to race. The most prestigious event at the regatta is the Grand Challenge Cup for Men's Eights, which has been awarded since the regatta was first staged. As the regatta pre-dates any national or international rowing organisation, it has its own rules and organisation, although it is recognised by both British Rowing (the governing body of row ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holy Roman Empire
The Holy Roman Empire was a political entity in Western, Central, and Southern Europe that developed during the Early Middle Ages and continued until its dissolution in 1806 during the Napoleonic Wars. From the accession of Otto I in 962 until the twelfth century, the Empire was the most powerful monarchy in Europe. Andrew Holt characterizes it as "perhaps the most powerful European state of the Middle Ages". The functioning of government depended on the harmonic cooperation (dubbed ''consensual rulership'' by Bernd Schneidmüller) between monarch and vassals but this harmony was disturbed during the Salian period. The empire reached the apex of territorial expansion and power under the House of Hohenstaufen in the mid-thirteenth century, but overextending led to partial collapse. On 25 December 800, Pope Leo III crowned the Frankish king Charlemagne as emperor, reviving the title in Western Europe, more than three centuries after the fall of the earlier ancient Weste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homologous Recombination Repair
Homologous recombination is a type of genetic recombination in which genetic information is exchanged between two similar or identical molecules of double-stranded or single-stranded nucleic acids (usually DNA as in cellular organisms but may be also RNA in viruses). Homologous recombination is widely used by cells to accurately DNA repair harmful breaks that occur on both strands of DNA, known as double-strand breaks (DSB), in a process called homologous recombinational repair (HRR). Homologous recombination also produces new combinations of DNA sequences during meiosis, the process by which eukaryotes make gamete cells, like sperm and egg cells in animals. These new combinations of DNA represent genetic variation in offspring, which in turn enables populations to adapt during the course of evolution. Homologous recombination is also used in horizontal gene transfer to exchange genetic material between different strains and species of bacteria and viruses. Horizont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hirzebruch–Riemann–Roch Theorem
In mathematics, the Hirzebruch–Riemann–Roch theorem, named after Friedrich Hirzebruch, Bernhard Riemann, and Gustav Roch, is Hirzebruch's 1954 result generalizing the classical Riemann–Roch theorem on Riemann surfaces to all complex algebraic varieties of higher dimensions. The result paved the way for the Grothendieck–Hirzebruch–Riemann–Roch theorem proved about three years later. Statement of Hirzebruch–Riemann–Roch theorem The Hirzebruch–Riemann–Roch theorem applies to any holomorphic vector bundle ''E'' on a compact space, compact complex manifold ''X'', to calculate the holomorphic Euler characteristic of ''E'' in sheaf cohomology, namely the alternating sum : \chi(X,E) = \sum_^ (-1)^ \dim_ H^(X,E) of the dimensions as complex vector spaces, where ''n'' is the complex dimension of ''X''. Hirzebruch's theorem states that χ(''X'', ''E'') is computable in terms of the Chern classes ''ck''(''E'') of ''E'', and the Todd classes \operatorname_(X) of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Historicorum Romanorum Reliquiae
The ''Historicorum Romanorum reliquiae'' is the "monumental" two-volume collection of scholarly editions of fragmentary Roman historical texts edited by Hermann Peter and published between 1870 and 1914. Peter published the Latin editions of these texts, without translation and with introductions in Latin; for the greatest part of the twentieth century, this was the standard edition of such texts. Peter considers the reign of Constantine the Great as marking the end of Roman historiography (with the exception of a sixth-century excerpt preserved in Jordanes); history after, he said, "went over to the Christians and the Greeks". The first volume appeared in Leipzig, 1870, with a second edition (revised by Peter himself) appearing in Leipzig, 1914 (and reprinted Stuttgart, 1967); the second volume appeared in Leipzig, 1906. In 1993, a reprinted edition with additional bibliography appeared. In the middle of the twentieth century there were repeated calls (including by Felix Jacoby, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The History Of Rock And Roll
''The History of Rock & Roll'' is an American radio documentary on rock and roll music, first syndicated in 1969. Originally one of the lengthiest documentaries of any medium (48 hours in the 1969 version, 52 hours each for the 1978 and 1981 versions), ''The History of Rock & Roll'' is a definitive history of the Rock and Roll genre, stretching from the early 1950s to the present day. The "rockumentary," as producers Bill Drake and Gene Chenault called it, features hundreds of interviews and comments from numerous rock artists and people involved with rock and roll. Notable features introduced in the 1978 edition of this documentary include the "chart sweep," featuring a montage of #1 songs and notable hits from a given year or artist, a "time sweep" for each one-hour segment providing a montage of the major hits for each year or individual artist, and closing with a special climactic time sweep featuring a montage of every #1 hit from 1955 to the then current year. While the doc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
