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NR LOGO
NR, Nr or nr may refer to: Arts and media * ''National Review'', an American political magazine * ''Newsround'', a British news programme for children * Nollywood Reinvented, a Nigerian cinematic review website * ''Numerical Recipes'', a series of books on numerical computation * Not Rated, referring to a work without a content rating in North America Places * NR postcode area, UK, for the area surrounding Norwich, England * Nauru (ISO 3166-1 country code) ** .nr, the country code top-level domain for Nauru * North Riding of Yorkshire, England * Northern Rhodesia * New Rockford, North Dakota, US Businesses and organizations Military bodies * National Resources Division, the domestic division of the United States Central Intelligence Agency * Naval Reserve (other), various bodies * Naval Reactors, the governing body of the United States Navy Nuclear Power Program Rail bodies in Great Britain * National Rail, a generic term for passenger services * Network Rail, the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Review
''National Review'' is an American conservative editorial magazine, focusing on news and commentary pieces on political, social, and cultural affairs. The magazine was founded by William F. Buckley Jr. in 1955. Its editor-in-chief is Rich Lowry, and its editor is Ramesh Ponnuru. Since its founding, the magazine has played a significant role in the development of conservatism in the United States, helping to define its boundaries and promoting fusionism while establishing itself as a leading voice on the American right. History Background Before ''National Review''s founding in 1955, the American right was a largely unorganized collection of people who shared intertwining philosophies but had little opportunity for a united public voice. They wanted to marginalize the antiwar, noninterventionistic views of the Old Right. In 1953, moderate Republican Dwight D. Eisenhower was president, and many major magazines such as the '' Saturday Evening Post'', ''Time'', an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Rock
Northern Rock, formerly the Northern Rock Building Society, was a British bank. Based at Regent Centre in Newcastle upon Tyne, United Kingdom, Northern Rock was originally a building society. It demutualised and became Northern Rock bank in 1997, when it floated on the London Stock Exchange with the ticker symbol NRK. During the early 2000s the company borrowed substantially to fund mortgages, with the aim of ambitious growth, and also donated large amounts to charitable purposes and communities directly and through sponsorships. Due to the 2008 financial crisis, it was unable to produce income as expected from its loans, and was at risk of being unable to repay the amounts it had borrowed. The news that the bank had approached the government for support with its liquidity led within 24 hours to a public lack of confidence and concerns that savings were at risk, and the bank failed following a bank run as people rushed to withdraw their savings. It was the first British ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NR Vulpeculae
NR Vulpeculae is a red supergiant and irregular variable star in the constellation Vulpecula. It has an apparent magnitude varying between 9.13 and 9.61, which is too faint to be seen to the naked eye. Characteristics It has an spectral classification of M1Ia, meaning that it is a supergiant star of higher luminosity and spectral type M. Levesque ''et al.'' (2005) published a different spectral type of K3I, meaning that it is a K-type supergiant star. NR Vulpeculae has expanded to 920 times the Sun's size and is currently emitting 200,000 times its luminosity. If placed in the Solar System, its photosphere would reach beyond Mars' orbit. It has a cool surface temperature of around 4,000 K, giving it the typical orange color of a K-type star. NR Vulpeculae is also a slow irregular variable, with an apparent magnitude ranging from 9.13 to 9.61. It is considered a likely member of the Vulpecula OB1 stellar association A stellar association is a very loose star ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sequence Clustering
In bioinformatics, sequence clustering algorithms attempt to group biological sequences that are somehow related. The sequences can be either of genomic, " transcriptomic" ( ESTs) or protein origin. For proteins, homologous sequences are typically grouped into families. For EST data, clustering is important to group sequences originating from the same gene before the ESTs are assembled to reconstruct the original mRNA. Some clustering algorithms use single-linkage clustering, constructing a transitive closure of sequences with a similarity over a particular threshold. UCLUST and CD-HIT use a greedy algorithm that identifies a representative sequence for each cluster and assigns a new sequence to that cluster if it is sufficiently similar to the representative; if a sequence is not matched then it becomes the representative sequence for a new cluster. The similarity score is often based on sequence alignment. Sequence clustering is often used to make a non-redundant set of rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanorod
In nanotechnology, nanorods are one morphology of nanoscale objects. Each of their dimensions range from 1–100 nm. They may be synthesized from metals or semiconducting materials. Standard aspect ratios (length divided by width) are 3-5. Nanorods are produced by direct chemical synthesis. A combination of ligands act as shape control agents and bond to different facets of the nanorod with different strengths. This allows different faces of the nanorod to grow at different rates, producing an elongated object. One potential application of nanorods is in display technologies, because the reflectivity of the rods can be changed by changing their orientation with an applied electric field. Another application is for microelectromechanical systems (MEMS). Nanorods, along with other noble metal nanoparticles, also function as theragnostic agents. Nanorods absorb in the near IR, and generate heat when excited with IR light. This property has led to the use of nanorods as canc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noise Reduction
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio. All signal processing devices, both analog and digital, have traits that make them susceptible to noise. Noise can be random with an even frequency distribution ( white noise), or frequency-dependent noise introduced by a device's mechanism or signal processing algorithms. In electronic systems, a major type of noise is ''hiss'' created by random electron motion due to thermal agitation. These agitated electrons rapidly add and subtract from the output signal and thus create detectable noise. In the case of photographic film and magnetic tape, noise (both visible and audible) is introduced due to the grain structure of the medium. In pho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Radio
5G NR (5G New Radio) is a radio access technology (RAT) developed by the 3rd Generation Partnership Project (3GPP) for the 5G (fifth generation) mobile network. It was designed to be the global standard for the air interface of 5G networks. It is based on orthogonal frequency-division multiplexing (OFDM), as is the 4G (fourth generation) long-term evolution (LTE) standard. The 3GPP specification 38 series provides the technical details behind 5G NR, the successor of LTE. The study of 5G NR within 3GPP started in 2015, and the first specification was made available by the end of 2017. While the 3GPP standardization process was ongoing, the industry had already begun efforts to implement infrastructure compliant with the draft standard, with the first large-scale commercial launch of 5G NR having occurred in the end of 2018. Since 2019, many operators have deployed 5G NR networks and handset manufacturers have developed 5G NR enabled handsets. Frequency bands 5G NR uses f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reactive Nitrogen
Reactive nitrogen ("Nr"), also known as fixed nitrogen, refers to all forms of nitrogen nitrogen cycle, present in the environment except for molecular nitrogen (). While nitrogen is an essential element for life on Earth, molecular nitrogen is comparatively unreactive, and must be converted to other chemical forms via nitrogen fixation before it can be used for growth. Common Nr species include NOx, nitrogen oxides (), ammonia (), nitrous oxide (), as well as the anion nitrate (). Biologically, nitrogen is "fixed" mainly by the microbes (eg., Bacteria and Archaea) of the soil that fix into mainly but also other species. Legumes, a type of plant in the Fabacae family, are symbionts to some of these microbes that fix . is a building block to Amino acids and proteins amongst other things essential for life. However, just over half of all reactive nitrogen entering the biosphere is attributable to anthropogenic activity such as industrial fertilizer production. While reactive n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicotinamide Riboside
Nicotinamide riboside (NR, SR647) is a pyridine-nucleoside and a form of vitamin B3. It functions as a precursor to nicotinamide adenine dinucleotide, or NAD+, through a two-step and a three-step pathway. Chemistry While the molecular weight of nicotinamide riboside is 255.25 g/mol, that of its chloride salt is 290.70 g/mol. As such, 100 mg of nicotinamide riboside chloride provides 88 mg of nicotinamide riboside. Stability and degradation NRCl is susceptible to degradation through both thermal decomposition and base-catalyzed hydrolysis: * Thermal degradation: Decomposition occurs rapidly at temperatures above 130°C, producing nicotinamide (NAM) and ribose. * Degradation kinetics: NRCl degradation follows pseudo-first-order kinetics, with the degradation rate doubling for every 10°C increase in temperature. At pH 7.4, degradation is significantly faster than in acidic conditions, highlighting the importance of pH control for formulation stability. These propert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Receptor
In the field of molecular biology, nuclear receptors are a class of proteins responsible for sensing steroids, thyroid hormones, vitamins, and certain other molecules. These intracellular receptors work with other proteins to regulate the expression of specific genes, thereby controlling the development, homeostasis, and metabolism of the organism. Nuclear receptors bind directly to DNA regulating the expression of adjacent genes; hence these receptors are classified as transcription factors. The regulation of gene expression by nuclear receptors often occurs in the presence of a ligand—a molecule that affects the receptor's behavior. Ligand binding to a nuclear receptor results in a conformational change activating the receptor. The result is up- or down-regulation of gene expression. A unique property of nuclear receptors that differentiates them from other classes of receptors is their direct control of genomic DNA. Nuclear receptors play key roles in both embryonic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Ndebele Language
isiNdebele (), also known as Southern Ndebele is an African language belonging to the Mbo group of Bantu languages, spoken by the Ndebele people of South Africa. Northern Ndebele or Ndebele also known as isi Ndebele is spoken in Limpopo in areas such as Polokwane (Bhulungwane), Ga-Rathoka (KaSondonga), Ga-Mashashane, Ga Maraba / Kalkspruit, Mokopane (Mghumbane), Zebediela (Sebetiela), which is closer to Southern Ndebele. Overview The Ndebele (Southern and Northern) people's history has been traced back to King Ndebele, King Ndebele fathered King Mkhalangana, King Mkhalangana fathered King Mntungwa (not to be confused with the Khumalo Mntungwa, because he was fathered by Mbulazi), King Mntungwa fathered King Jonono, King Jonono fathered King Nanasi, King Nanasi fathered King Mafana, king Mafana fathered King Mhlanga and Chief Libhoko, King Mhlanga fathered King Musi and Chief Skhube. Ndebele – Some of his sons were left behind with the Hlubi tribe Mkhalangana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Numero Sign
The numero sign or numero symbol, (also represented as Nº, No̱, No., or no.), is a Typography, typographic abbreviation of the word ''number''(''s'') indicating Ordinal numeral, ordinal numeration, especially in names and titles. For example, using the numero sign, the written long-form of the address "Number 29 Acacia Road" is shortened to "№ 29 Acacia Rd", yet both forms are spoken long. Typographically, the numero sign combines as a single Orthographic ligature, ligature the uppercase Latin letter with a usually superscript lowercase O, letter , sometimes underlined, resembling the masculine ordinal indicator . The ligature has a code point in Unicode as a precomposed character, . The ''Oxford English Dictionary'' derives the numero sign from Latin , the Ablative case, ablative form of ("number", with the ablative denotations of "by the number, with the number"). In Romance languages, the numero sign is understood as an abbreviation of the word for "number", e.g. Ital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
