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Purity (other)
Purity may refer to: Books * ''Pureza'' (novel), a 1937 Brazilian novel by José Lins do Rego * ''Purity'' (novel), a 2015 novel by Jonathan Franzen ** ''Purity'' (TV series), a TV series based on the novel *''Purity'', a 2012 novel by Jackson Pearce *''Purity'', a 1998 novel by Shaun Hutson *''Purity'', a 2007 play by Thomas Bradshaw (playwright) *''Cleanness'', also known as ''Purity'', a 14th-century poem Companies * Purity Dairies, a dairy company in Nashville, Tennessee, United States * Purity Factories, a food processing company in St. John's, Newfoundland and Labrador, Canada * Purity Distilling Company, an alcohol manufacturer involved in the Boston Molasses Disaster in the U.S. * Purity FM, a Nigerian radio station *Purity, a former supermarket brand owned by Woolworths Supermarkets (Australia) Film * ''Purity'' (film), a 1916 motion picture *Purity by Anat Zuria * Black oil (''The X-Files'') (also known as Purity), a fictional alien virus in the TV series ''The X-Fil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pureza (novel)
''Pureza'' is a 1937 Portuguese-language novel by the Brazilian writer José Lins do Rego. The novel has been translated into English and published twice as ''Pureza - A Novel of Brazil'' translated Lucie Marion 1947, and again ''Pureza'' 1968 The novel was immediately successful in Brazil and almost immediately was made into a film, ''Pureza'' (1940). The film was produced by Adhemar Gonzaga, and directed by the Portuguese director Chianca de Garcia Chianca de Garcia (14 May 1898 – 28 January 1983) was a Portuguese film director A film director controls a film's artistic and dramatic aspects and visualizes the screenplay (or script) while guiding the film crew and actors in the ....Robert Stam Tropical Multiculturalism: A Comparative History of Race ... -1997 - Page 104 0822320487 "Pureza (Purity, 1940), produced by Adhemar Gonzaga, directed by the Portuguese director Chianca de Garcia, and based on a novel by Jose Lins do Rego, features a dramatic sequence in whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vice
A vice is a practice, behaviour, or habit generally considered immoral, sinful, criminal, rude, taboo, depraved, degrading, deviant or perverted in the associated society. In more minor usage, vice can refer to a fault, a negative character trait, a defect, an infirmity, or a bad or unhealthy habit. Vices are usually associated with a transgression in a person's character or temperament rather than their morality. Synonyms for vice include fault, sin, depravity, iniquity, wickedness, and corruption. The antonym of vice is virtue. Etymology The modern English term that best captures its original meaning is the word ''vicious'', which means "full of vice". In this sense, the word ''vice'' comes from the Latin word '' vitium'', meaning "failing or defect". Law enforcement Depending on the country or jurisdiction, vice crimes may or may not be treated as a separate category in the criminal codes. Even in jurisdictions where vice is not explicitly delineated in the legal code, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blood Purity (other)
Blood purity, and related terms pureblood, pureblooded, full-blooded, full-blood, full blood, half blood and half-blooded, are all terms which are or have been used relating to racial purity. It may also be associated with: * Blood quantum laws, tribal laws in the United States stipulating a certain minimum degree of indigenous and/or tribal ancestry required for membership in a given Native American tribe * The term Half-caste, and in particular with reference to laws known as ** Half-Caste Act in some states of Australia * ''Limpieza de sangre'', blood purity laws in Medieval Spain stipulating a social hierarchy based on ancestry Blood purity may also refer to: * Purity of wizarding ancestry in the fictional ''Harry Potter'' series See also * Blood (other) * Casta * Full Blooded, an American rapper * German Blood Certificate * Purity (other) * Purebred * Pedigree chart A pedigree chart is a diagram that shows the occurrence and appearance of phenotypes of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purity (algebraic Geometry)
In the mathematical field of algebraic geometry, purity is a theme covering a number of results and conjectures, which collectively address the question of proving that "when something happens, it happens in a particular codimension". Purity of the branch locus For example, ramification is a phenomenon of codimension 1 (in the geometry of complex manifolds, reflecting as for Riemann surfaces that ramify at single points that it happens in real codimension two). A classical result, Zariski–Nagata purity of Masayoshi Nagata and Oscar Zariski, called also purity of the branch locus, proves that on a non-singular algebraic variety a ''branch locus'', namely the set of points at which a morphism ramifies, must be made up purely of codimension 1 subvarieties (a Weil divisor). There have been numerous extensions of this result into theorems of commutative algebra and scheme theory, establishing purity of the branch locus in the sense of description of the restrictions on the possib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purity (quantum Mechanics)
In quantum mechanics, and especially quantum information theory, the purity of a normalized quantum state is a scalar defined as :\gamma \, \equiv \, \mbox(\rho^2) \, where \rho \, is the density matrix of the state. The purity defines a measure on quantum states, giving information on how much a state is mixed. Mathematical properties The purity of a normalized quantum state satisfies \frac1d \leq \gamma \leq 1 \,, where d \, is the dimension of the Hilbert space upon which the state is defined. The upper bound is obtained by \mbox(\rho)=1 \,and \mbox(\rho^2)\leq \mbox(\rho) \,(see trace). If \rho \, is a projection, which defines a pure state, then the upper bound is saturated: \mbox(\rho^2)= \mbox(\rho)=1 \, (see Projections). The lower bound is obtained by the completely mixed state, represented by the matrix \frac1d I_d \,. The purity of a quantum state is conserved under unitary transformations acting on the density matrix in the form \rho \mapsto U\rho U^\dagger \,, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorfulness
Colorfulness, chroma and saturation are attributes of perceived color relating to chromatic intensity. As defined formally by the International Commission on Illumination (CIE) they respectively describe three different aspects of chromatic intensity, but the terms are often used loosely and interchangeably in contexts where these aspects are not clearly distinguished. The precise meanings of the terms vary by what other functions they are dependent on. * Colorfulness is the "attribute of a visual perception according to which the perceived color of an area appears to be more or less chromatic"., page 87. The colorfulness evoked by an object depends not only on its spectral reflectance but also on the strength of the illumination, and increases with the latter unless the brightness is very high ( Hunt effect). * Chroma is the "colorfulness of an area judged as a proportion of the brightness of a similarly illuminated area that appears white or highly transmitting". As a resu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nine (purity)
Nines are an informal, logarithmic notation for proportions very near to one, or equivalently percentages very near 100%. Their common uses include grading the purity of materials. Put simply, "nines" are the number of consecutive nines in a percentage such as 99% (two nines) or a decimal fraction such as 0.999 (three nines). The number of nines of a proportion is \mathrm = -\log_(1-x) However, there are different conventions for stating a non-integer number of nines. 99.5% could be expressed as "two nines five" or 2.3 nines, as outlined below. A completely pure material ( = 1) would have an infinite number of nines. Precious metals The exact purity of very fine precious metals such as platinum, gold and silver can be of great interest. Based on the system of millesimal fineness, a metal is said to be ''one nine'' or ''one nine fine'' if it is 900 fine, or 90% pure. A metal that is 990 fine is then described as ''two nines fine'' and one that is 999 fine is described as ''three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fineness
The fineness of a precious metal object (coin, bar, jewelry, etc.) represents the weight of ''fine metal'' therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase hardness and durability of coins and jewelry, alter colors, decrease the cost per weight, or avoid the cost of high-purity refinement. For example, copper is added to the precious metal silver to make a more durable alloy for use in coins, housewares and jewelry. Coin silver, which was used for making silver coins in the past, contains 90% silver and 10% copper, by mass. Sterling silver contains 92.5% silver and 7.5% of other metals, usually copper, by mass. Various ways of expressing fineness have been used and two remain in common use: ''millesimal fineness'' expressed in units of parts per 1,000 and '' karats'' or ''carats'' used only for gold. Karats measure the parts per 24, so that 18 karat = = 75% and 24 karat gold is considered 100% go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pure Substance
A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be simple substances (substances consisting of a single chemical element), chemical compounds, or alloys. Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt ( sodium chloride) and refined sugar ( sucrose). However, in practice, no substance is entirely pure, and chemical purity is specified according to the intended use of the chemical. Chemical substances exist as solids, liqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Purity
In chemistry, chemical purity is the measurement of the amount of impurities found in a sample. Several grades of purity are used by the scientific, pharmaceutical, and industrial communities. Some of the commonly used grades of purity include: * ACS grade is the highest level of purity, and meets the standards set by the American Chemical Society (ACS). The official descriptions of the ACS levels of purity is documented in the ''Reagent Chemicals'' publication, issued by the ACS. It is suitable for food and laboratory uses. * Reagent grade is almost as stringent as the ACS grade. * USP grade meets the purity levels set by the United States Pharmacopeia (USP). USP grade is equivalent to the ACS grade for many drugs. * NF grade is a purity grade set by the National Formulary (NF). NF grade is equivalent to the ACS grade for many drugs. * British Pharmacopoeia: Meets or exceeds requirements set by the British Pharmacopoeia (BP). Can be used for food, drug, and medical purpose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contaminant
Contamination is the presence of a constituent, impurity, or some other undesirable element that spoils, corrupts, infects, makes unfit, or makes inferior a material, physical body, natural environment, workplace, etc. Types of contamination Within the sciences, the word "contamination" can take on a variety of subtle differences in meaning, whether the contaminant is a solid or a liquid, as well as the variance of environment the contaminant is found to be in. A contaminant may even be more abstract, as in the case of an unwanted energy source that may interfere with a process. The following represent examples of different types of contamination based on these and other variances. Chemical contamination In chemistry, the term "contamination" usually describes a single constituent, but in specialized fields the term can also mean chemical mixtures, even up to the level of cellular materials. All chemicals contain some level of impurity. Contamination may be recognized or not and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impurity
In chemistry and materials science, impurities are chemical substances inside a confined amount of liquid, gas, or solid, which differ from the chemical composition of the material or compound. Firstly, a pure chemical should appear thermodynamically in at least one chemical phase and can also be characterized by its one-component-phase diagram. Secondly, practically speaking, a pure chemical should prove to be homogeneous (i.e., will show no change of properties after undergoing a wide variety of consecutive analytical chemical procedures). The perfect pure chemical will pass all attempts and tests of further separation and purification. Thirdly, and here we focus on the common chemical definition, it should not contain any trace of any other kind of chemical species. In reality, there are no absolutely 100% pure chemical compounds, as there is always some minute contamination. Indeed, as detection limits in analytical chemistry decrease, the number of impurities detected tend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
