Posts Tagged ‘Context Discovery’

Chlorine: Wikipedia Visual Summary by WikiSummarizer

Saturday, February 11th, 2012

Visual presentation communicates information clearly and effectively through graphical means. WikiSummarizer is a Web-based application that summarizes Wikipedia articles and presents them as Visual Summaries, Tree Views and Keyword Clouds with links to Wikipedia Knowledge Base.

WikiSummarizer is an interactive learning and teaching tool providing effective graphical visualization that reduces complex information and provides clear and attractive presentation of the essential points. The interactive summaries are easily shared and published in blogs, websites and documents as digital Visual Summaries, Tree Views and Keyword Clouds.

It is easy to collaborate and mine information using the WikiSummarizer summaries in blogs, websites, word editors, browsers, mind mapping applications, databases and content management systems.

This Visual Summary presents the keywords and the summaries of the Wikipedia article about "Chlorine". The Visual Summary map and the Keyword Cloud were automatically created by WikiSummarizer.

Here is a link to the "Chlorine" Visual Summary for navigation in your browser.

 

Keyword Cloud with links to Wikipedia Knowledge Base

 

 

Essential Summary

 

Wikipedia article:  Chlorine

 

Chlorine

 

Chlorine (100)

 

·         It has the highest electron affinity and the third highest electronegativity of all the elements; for this reason, chlorine is a strong oxidizing agent.

 

·         The most common compound of chlorine, sodium chloride, has been known since ancient times; however, around 1630, chlorine gas was obtained by the Belgian chemist and physician Jan Baptist van Helmont.

 

·         The synthesis and characterization of elemental chlorine occurred in 1774 by Swedish chemist Carl Wilhelm Scheele, who called it "dephlogisticated muriatic acid air," having thought he synthesized the oxide obtained from the hydrochloric acid.

 

·         The great oxidizing potential of chlorine led it to its bleaching and disinfectant uses, as well as uses of an essential reagent in the chemical industry.

 

·         As a common disinfectant, chlorine compounds are used in swimming pools to keep them clean and sanitary.

 

·         Solutions of chlorine in water contain chlorine (Cl2), hydrochloric acid, and hypochlorous acid: This conversion to the right is called disproportionation, because the ingredient chlorine both increases and decreases in formal oxidation state.

 

·         Like the other halogens, chlorine participates in free-radical substitution reactions with hydrogen-containing organic compounds.

 

·         In the Earth's crust, chlorine is present at average concentrations of about 126 parts per million, predominantly in such minerals as halite (sodium chloride), sylvite (potassium chloride), and carnallite (potassium magnesium chloride hexahydrate).

 

·         Principal applications of chlorine are in the production of a wide range of industrial and consumer products.

 

———————————–

· This summary was produced by WikiSummarizer for Wikipedia

 

· WikiSummarizer is an automated text summarization and text mining application created by Context Discovery Inc

 

· If you are interested in using WikiSummarizer technology please contact us at wikisummarizer@contextdiscovery.com

 

——————————————————

About Context Discovery WikiSummarizer

WikiSummarizer is a Web-based summarization portal that summarizes Wikipedia articles and presents the results as a structured outline, a Visual Summary and a Keyword Cloud.

The Visual Summary can be navigated in any browser on Windows, Mac, Linux, iPhone, iPad and Android devices.

The Keyword Cloud is linked with Wikipedia Knowledge Base. When you click on the keyword in the cloud you will be presented with an instant Visual Summary.

The keywords and summaries are easily exported to other applications such as word editors, browsers, mind mapping applications like Mindjet MindManager, MindGenius, XMind, and any other mind mapping application.

The summaries are stored in a knowledge library.

Report writers can be easily used for knowledge mining of the summaries, keywords and links. The Wikipedia Knowledge Base search function works as a back-of-the-book index pointing to the most relevant summaries and links.

For more information about installing WikiSummarizer for your organization or as a cloud server please contact wikisummarizer@contextdiscovery.com

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Posted by Henry | Comments Off

Phosphorus: Wikipedia Visual Summary by WikiSummarizer

Wednesday, January 25th, 2012

Visual presentation communicates information clearly and effectively through graphical means. WikiSummarizer is a Web-based application that summarizes Wikipedia articles and presents them as Visual Summaries, Tree Views and Keyword Clouds with links to Wikipedia Knowledge Base.

WikiSummarizer is an interactive learning and teaching tool providing effective graphical visualization that reduces complex information and provides clear and attractive presentation of the essential points. The interactive summaries are easily shared and published in blogs, websites and documents as digital Visual Summaries, Tree Views and Keyword Clouds.

It is easy to collaborate and mine information using the WikiSummarizer summaries in blogs, websites, word editors, browsers, mind mapping applications, databases and content management systems.

This Visual Summary presents the keywords and the summaries of the Wikipedia article about "Phosphorus". The Visual Summary map and the Keyword Cloud were automatically created by WikiSummarizer.

Here is a link to the "Phosphorus" Visual Summary for navigation in your browser.

 

 

Keyword Cloud with links to Wikipedia Knowledge Base

 

 

Essential Summary

 

Wikipedia article:  Phosphorus

 

Phosphorus

 

Phosphorus (100)

 

·         A multivalent nonmetal of the nitrogen group, phosphorus as a mineral is almost always present in its maximally oxidized state, as inorganic phosphate rocks.

 

·         Elemental phosphorus exists in two major forms—white phosphorus and red phosphorus—but due to its high reactivity, phosphorus is never found as a free element on Earth.

 

·         The first form of elemental phosphorus to be produced (white phosphorus, in 1669) emits a faint glow upon exposure to oxygen – hence its name given from Greek mythology, Φωσφόρος meaning "light-bearer" (Latin Lucifer), referring to the "Morning Star", the planet Venus.

 

·         Although the term "phosphorescence", meaning glow after illumination, derives from this property of phosphorus, the glow of phosphorus originates from oxidation of the white (but not red) phosphorus and should be called chemiluminescence.

 

·         The vast majority of phosphorus compounds are consumed as fertilizers.

 

·         Today, the most important commercial use of phosphorus-based chemicals is the production of fertilizers, to replace the phosphorus that plants remove from the soil.

 

·         The two most common allotropes are white phosphorus and red phosphorus.

 

·         White phosphorus and related molecular forms The most important form of elemental phosphorus from the perspective of applications and chemical literature is white phosphorus.

 

·         In this sense, red phosphorus is not an allotrope, but rather an intermediate phase between the white and violet phosphorus, and most of its properties have a range of values.

 

·         Phosphorus is not found free in nature, but it is widely distributed in many minerals, mainly phosphates.

 

·         The white phosphorus is then oxidised to phosphoric acid and subsequently neutralised with base to give phosphate salts.

 

·         Oxides The most prevalent compounds of phosphorus are derivatives of phosphate (PO4), a tetrahedral anion.

 

·         In 1769 Johan Gottlieb Gahn and Carl Wilhelm Scheele showed that calcium phosphate (Ca3(PO4)2) is found in bones, and they obtained phosphorus from bone ash.

 

 

———————————–

· This summary was produced by WikiSummarizer for Wikipedia

 

· WikiSummarizer is an automated text summarization and text mining application created by Context Discovery Inc

 

· If you are interested in using WikiSummarizer technology please contact us at wikisummarizer@contextdiscovery.com

 

——————————————————

About Context Discovery WikiSummarizer

WikiSummarizer is a Web-based summarization portal that summarizes Wikipedia articles and presents the results as a structured outline, a Visual Summary and a Keyword Cloud.

The Visual Summary can be navigated in any browser on Windows, Mac, Linux, iPhone, iPad and Android devices.

The Keyword Cloud is linked with Wikipedia Knowledge Base. When you click on the keyword in the cloud you will be presented with an instant Visual Summary.

The keywords and summaries are easily exported to other applications such as word editors, browsers, mind mapping applications like Mindjet MindManager, MindGenius, XMind, and any other mind mapping application.

The summaries are stored in a knowledge library.

Report writers can be easily used for knowledge mining of the summaries, keywords and links. The Wikipedia Knowledge Base search function works as a back-of-the-book index pointing to the most relevant summaries and links.

For more information about installing WikiSummarizer for your organization or as a cloud server please contact wikisummarizer@contextdiscovery.com

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Fluorine: Wikipedia Visual Summary by WikiSummarizer

Friday, December 9th, 2011

This Visual Summary presents the keywords and the key summaries of the Wikipedia article about "Fluorine". The Visual Summary map was automatically created by WikiSummarizer.

WikiSummarizer is a Web-based application that summarizes Wikipedia articles and provides Wikipedia Knowledge Base for comprehensive references, and as learning tool. The Wikipedia summaries can be exported to word editors, browsers, mind mapping applications, databases and content management systems.

Here is a link to the "Fluorine" Visual Summary for navigation in your browser.

 

Wikipedia article:  Fluorine

 

Fluorine

 

Fluorine (100)

 

·         At standard pressure and temperature, fluorine is a pale yellow gas composed of diatomic molecules, F2.

 

·         It was not until 1886 that elemental fluorine was obtained by French chemist Henri Moissan, whose method of electrolysis remains the only industrial production method of fluorine gas.

 

·         Fluorine forms stable compounds, fluorides, with all elements except helium and neon, for which the reaction has been attempted.

 

·         Heavier metal elements such as uranium can form volatile coordination compounds (separate molecules with several fluorine atoms surrounding a metal atom).

 

·         Fluorine occurs naturally on Earth exclusively in the form of its only stable isotope, fluorine-19, which makes the element both monoisotopic and mononuclidic.

 

·         All isotopes heavier than the stable fluorine-19 decay via beta minus decay (electron emission), for some isotopes possibly together with neutron emission.

 

·         Fluorine is so reactive that water, halogens, and most other substances, even generally nonreactive ones such as radon, burn with a bright flame in a jet of fluorine gas.

 

·         Three minerals exist on earth that contain enough fluorine to be mined and used as industrial resources.

 

·         Fluorine exists in the −1 oxidation state in all compounds except for elemental fluorine, where the atoms are bonded to each other and thus at oxidation state 0.

 

·         Organofluorine compounds are synthesized via both direct reaction with fluorine gas, which can be dangerously reactive, or reaction with fluorinating reagents such as sulfur tetrafluoride.

 

·         The enzyme adenosyl-fluoride synthase is capable of biologically synthesizing the carbon–fluorine bond.

 

metals (100)

 

·         Most frequently, the metals must be in powder forms, because many metals form layers of fluoride on their surfaces that resist further oxidation.

 

fluoride (78)

 

·         Most frequently, the metals must be in powder forms, because many metals form layers of fluoride on their surfaces that resist further oxidation.

 

·         The most important is fluorite, which is used in smelting, construction, and the manufacture of hydrogen fluoride.

 

·         Due to the basicity of the fluoride ion, soluble fluorides give basic water solutions.

 

·         The enzyme adenosyl-fluoride synthase is capable of biologically synthesizing the carbon–fluorine bond.

 

elemental fluorine (64)

 

·         It was not until 1886 that elemental fluorine was obtained by French chemist Henri Moissan, whose method of electrolysis remains the only industrial production method of fluorine gas.

 

·         Fluorine exists in the −1 oxidation state in all compounds except for elemental fluorine, where the atoms are bonded to each other and thus at oxidation state 0.

 

gas (64)

 

·         At standard pressure and temperature, fluorine is a pale yellow gas composed of diatomic molecules, F2.

 

·         It was not until 1886 that elemental fluorine was obtained by French chemist Henri Moissan, whose method of electrolysis remains the only industrial production method of fluorine gas.

 

·         Fluorine is so reactive that water, halogens, and most other substances, even generally nonreactive ones such as radon, burn with a bright flame in a jet of fluorine gas.

 

·         Tetrafluorides are the borderline: for example, zirconium tetrafluoride is an ionic solid, but germanium tetrafluoride is a molecular gas.

 

·         Organofluorine compounds are synthesized via both direct reaction with fluorine gas, which can be dangerously reactive, or reaction with fluorinating reagents such as sulfur tetrafluoride.

 

fluorine-19 (61)

 

·         Fluorine occurs naturally on Earth exclusively in the form of its only stable isotope, fluorine-19, which makes the element both monoisotopic and mononuclidic.

 

·         All isotopes heavier than the stable fluorine-19 decay via beta minus decay (electron emission), for some isotopes possibly together with neutron emission.

 

chemicals (61)

 

·         Inorganic fluorides and organofluorine compounds find use in a variety of materials and chemicals, including important pharmaceuticals, agrochemicals, lubricants, and textiles.

 

molecules (54)

 

·         At standard pressure and temperature, fluorine is a pale yellow gas composed of diatomic molecules, F2.

 

·         Heavier metal elements such as uranium can form volatile coordination compounds (separate molecules with several fluorine atoms surrounding a metal atom).

 

·         The bond energy is similar to the easily cleaved oxygen–oxygen bonds of peroxides or nitrogen–nitrogen bonds of hydrazines and significantly weaker than those of dichlorine or dibromine molecules.

 

acid (43)

 

·         Hydrofluoric acid, in contrast to other haloacids such as hydrochloric acid, is only a weak acid in water, but it is nonetheless extremely corrosive.

 

·         Andreas Sigismund Marggraf made the first recorded preparation of "fluoric acid" (hydrofluoric acid in modern nomenclature) in 1764, when he heated fluorite with sulfuric acid in glass, which was greatly corroded by the product.

 

minerals (41)

 

·         Three minerals exist on earth that contain enough fluorine to be mined and used as industrial resources.

 

————————————–

· This summary was produced by WikiSummarizer for Wikipedia

 

· WikiSummarizer is an automated text summarization and text mining application created by Context Discovery Inc

 

· If you are interested in using WikiSummarizer technology please contact us at wikisummarizer@contextdiscovery.com

 

——————————————————

About Context Discovery WikiSummarizer

WikiSummarizer is a Web-based summarization portal that summarizes Wikipedia articles and presents the results as a structured outline, a Visual Summary and a Keyword Cloud.

The Visual Summary can be navigated in any browser on Windows, Mac, Linux, iPhone, iPad and Android devices.

The Keyword Cloud is linked with Wikipedia Knowledge Base. When you click on the keyword in the cloud you will be presented with an instant Visual Summary.

The keywords and summaries are easily exported to other applications such as word editors, browsers, mind mapping applications like Mindjet MindManager, MindGenius, XMind, and any other mind mapping application.

The summaries are stored in a knowledge library.

Report writers can be easily used for knowledge mining of the summaries, keywords and links. The Wikipedia Knowledge Base search function works as a back-of-the-book index pointing to the most relevant summaries and links.

For more information about installing WikiSummarizer for your organization or as a cloud server please contact wikisummarizer@contextdiscovery.com

 

 

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Oxygen: Wikipedia Visual Summary by WikiSummarizer

Saturday, November 26th, 2011

This Visual Summary presents the keywords and the key summaries of the Wikipedia article about "Oxygen". The Visual Summary map was automatically created by WikiSummarizer.

WikiSummarizer is a Web-based application that summarizes Wikipedia articles and provides Wikipedia Knowledge Base for comprehensive references, and as learning tool. The Wikipedia summaries can be exported to word editors, browsers, mind mapping applications, databases and content management systems.

Here is a link to the "Oxygen" Visual Summary for navigation in your browser.

 

Wikipedia article:  Oxygen

 

Oxygen

 

Oxygen (100)

 

·         Oxygen ( /ˈɒksɨdʒɨn/ ok-si-jin) is the element with atomic number 8 and represented by the symbol O. Its name derives from the Greek roots ὀξύς (oxys) ("acid", literally "sharp", referring to the sour taste of acids) and -γενής (-genēs) ("producer", literally "begetter"), because at the time of naming, it was mistakenly thought that all acids required oxygen in their composition.

 

·         Oxygen is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element that readily forms compounds (notably oxides) with almost all other elements.

 

·         Oxygen is a strong oxidizing agent and has the second highest electronegativity of all the elements (only fluorine has a higher electronegativity).

 

·         By mass, oxygen is the third most abundant element in the universe after hydrogen and helium and the most abundant element by mass in the Earth's crust, making up almost half of the crust's mass.

 

·         Free oxygen is too chemically reactive to appear on Earth without the photosynthetic action of living organisms, which use the energy of sunlight to produce elemental oxygen from water.

 

·         Oxygen is toxic to obligately anaerobic organisms, which were the dominant form of early life on Earth until O2 began to accumulate in the atmosphere.

 

·         The name oxygen was coined in 1777 by Antoine Lavoisier, whose experiments with oxygen helped to discredit the then-popular phlogiston theory of combustion and corrosion.

 

·         Oxygen is produced industrially by fractional distillation of liquefied air, use of zeolites with pressure-cycling to concentrate oxygen from air, electrolysis of water and other means.

 

·         At standard temperature and pressure, oxygen is a very pale blue, odorless gas with the molecular formula O2, in which the two oxygen atoms are chemically bonded to each other with a spin triplet electron configuration.

 

·         Oxygen is the third most abundant chemical element in the universe, after hydrogen and helium.

 

·         The main driving factor of the oxygen cycle is photosynthesis, which is responsible for modern Earth's atmosphere.

 

·         Lavoisier renamed 'vital air' to oxygиne in 1777 from the Greek roots ὀξύς (oxys) (acid, literally "sharp," from the taste of acids) and -γενής (-genēs) (producer, literally begetter), because he mistakenly believed that oxygen was a constituent of all acids.

 

·         In 1805, Joseph Louis Gay-Lussac and Alexander von Humboldt showed that water is formed of two volumes of hydrogen and one volume of oxygen; and by 1811 Amedeo Avogadro had arrived at the correct interpretation of water's composition, based on what is now called Avogadro's law and the assumption of diatomic elemental molecules.

 

·         Hyperbaric (high-pressure) medicine uses special oxygen chambers to increase the partial pressure of O2 around the patient and, when needed, the medical staff.

 

·         Other important organic compounds that contain oxygen are: glycerol, formaldehyde, glutaraldehyde, citric acid, acetic anhydride, and acetamide.

 

gas (100)

 

·         At standard temperature and pressure, two atoms of the element bind to form dioxygen, a very pale blue, odorless, tasteless diatomic gas with the formula O2.

 

·         At standard temperature and pressure, oxygen is a very pale blue, odorless gas with the molecular formula O2, in which the two oxygen atoms are chemically bonded to each other with a spin triplet electron configuration.

 

·         In the meantime, on August 1, 1774, an experiment conducted by the British clergyman Joseph Priestley focused sunlight on mercuric oxide (HgO) inside a glass tube, which liberated a gas he named "dephlogisticated air".

 

pressure (89)

 

·         At standard temperature and pressure, two atoms of the element bind to form dioxygen, a very pale blue, odorless, tasteless diatomic gas with the formula O2.

 

·         Oxygen is produced industrially by fractional distillation of liquefied air, use of zeolites with pressure-cycling to concentrate oxygen from air, electrolysis of water and other means.

 

·         At standard temperature and pressure, oxygen is a very pale blue, odorless gas with the molecular formula O2, in which the two oxygen atoms are chemically bonded to each other with a spin triplet electron configuration.

 

·         Hyperbaric (high-pressure) medicine uses special oxygen chambers to increase the partial pressure of O2 around the patient and, when needed, the medical staff.

 

compounds (45)

 

·         Oxygen is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element that readily forms compounds (notably oxides) with almost all other elements.

 

·         Other important organic compounds that contain oxygen are: glycerol, formaldehyde, glutaraldehyde, citric acid, acetic anhydride, and acetamide.

 

acids (43)

 

·         Oxygen ( /ˈɒksɨdʒɨn/ ok-si-jin) is the element with atomic number 8 and represented by the symbol O. Its name derives from the Greek roots ὀξύς (oxys) ("acid", literally "sharp", referring to the sour taste of acids) and -γενής (-genēs) ("producer", literally "begetter"), because at the time of naming, it was mistakenly thought that all acids required oxygen in their composition.

 

·         Lavoisier renamed 'vital air' to oxygиne in 1777 from the Greek roots ὀξύς (oxys) (acid, literally "sharp," from the taste of acids) and -γενής (-genēs) (producer, literally begetter), because he mistakenly believed that oxygen was a constituent of all acids.

 

oxide (40)

 

·         In the meantime, on August 1, 1774, an experiment conducted by the British clergyman Joseph Priestley focused sunlight on mercuric oxide (HgO) inside a glass tube, which liberated a gas he named "dephlogisticated air".

 

mass (35)

 

·         By mass, oxygen is the third most abundant element in the universe after hydrogen and helium and the most abundant element by mass in the Earth's crust, making up almost half of the crust's mass.

 

temperature (32)

 

·         At standard temperature and pressure, two atoms of the element bind to form dioxygen, a very pale blue, odorless, tasteless diatomic gas with the formula O2.

 

·         At standard temperature and pressure, oxygen is a very pale blue, odorless gas with the molecular formula O2, in which the two oxygen atoms are chemically bonded to each other with a spin triplet electron configuration.

 

air (31)

 

·         Oxygen is produced industrially by fractional distillation of liquefied air, use of zeolites with pressure-cycling to concentrate oxygen from air, electrolysis of water and other means.

 

·         In the meantime, on August 1, 1774, an experiment conducted by the British clergyman Joseph Priestley focused sunlight on mercuric oxide (HgO) inside a glass tube, which liberated a gas he named "dephlogisticated air".

 

·         Lavoisier renamed 'vital air' to oxygиne in 1777 from the Greek roots ὀξύς (oxys) (acid, literally "sharp," from the taste of acids) and -γενής (-genēs) (producer, literally begetter), because he mistakenly believed that oxygen was a constituent of all acids.

 

atoms (24)

 

·         At standard temperature and pressure, two atoms of the element bind to form dioxygen, a very pale blue, odorless, tasteless diatomic gas with the formula O2.

 

·         At standard temperature and pressure, oxygen is a very pale blue, odorless gas with the molecular formula O2, in which the two oxygen atoms are chemically bonded to each other with a spin triplet electron configuration.

————————————–

· This summary was produced by WikiSummarizer for Wikipedia

 

· WikiSummarizer is an automated text summarization and text mining application created by Context Discovery Inc

 

· If you are interested in using WikiSummarizer technology please contact us at wikisummarizer@contextdiscovery.com

 

——————————————————

About Context Discovery WikiSummarizer

WikiSummarizer is a Web-based summarization portal that summarizes Web pages and documents in English, French, Spanish, and German.

The summaries are stored in organizational knowledge library. Report writers, including web-based ones, can be easily used for knowledge mining of the summaries, keywords and links. The Wikipedia Knowledge Base search function works as a back-of-the-book index pointing to the most relevant summaries and links.

The keywords and summaries are easily exported to other applications such as word editors, browsers, mind mapping applications like Mindjet MindManager, MindGenius, XMind, and any other mind mapping application.

The Visual Summary can be navigated in any browser on Windows, Mac, Linux, iPhone, iPad and Android devices.

For more information about installing WikiSummarizer for your organization or as a cloud server please contact wikisummarizer@contextdiscovery.com

 

 

 

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Posted by Henry | Comments Off

Nitrogen: Wikipedia Visual Summary by WikiSummarizer

Thursday, November 10th, 2011

This Visual Summary presents the keywords and the key summaries of the Wikipedia article about "Nitrogen". The Visual Summary map was automatically created by WikiSummarizer.

WikiSummarizer is a Web-based application that summarizes Wikipedia articles and provides Wikipedia Knowledge Base for comprehensive references, and as learning tool. The Wikipedia summaries can be exported to word editors, browsers, mind mapping applications, databases and content management systems.

Here is a link to the "Nitrogen" Visual Summary for navigation in your browser.

 

 

 

Wikipedia article:  Nitrogen

 

Nitrogen

 

Nitrogen (100)

 

·         Nitrogen ( /ˈnaɪtrɵdʒɨn/ ny-trə-jin) is a chemical element that has the symbol N, atomic number of 7 and atomic mass 14.00674 u.

 

·         Elemental nitrogen is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard conditions, constituting 78.08% by volume of Earth's atmosphere.

 

·         Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives), and cyanides, contain nitrogen.

 

·         The extremely strong bond in elemental nitrogen dominates nitrogen chemistry, causing difficulty for both organisms and industry in breaking the bond to convert the N2 into useful compounds, but at the same time causing release of large amounts of often useful energy when the compounds burn, explode, or decay back into nitrogen gas.

 

·         Nitrogen occurs in all living organisms, and the nitrogen cycle describes movement of the element from the air into the biosphere and organic compounds, then back into the atmosphere.

 

·         Nitrogen is formally considered to have been discovered by Daniel Rutherford in 1772, who called it noxious air or fixed air.

 

·         Chaptal's meaning was that nitrogen gas is the essential part of nitric acid, in turn formed from saltpetre (potassium nitrate), then known as nitre.

 

·         Other classes of nitrogen anions (negatively charged ions) are the poisonous azides (N− 3), which are linear and isoelectronic to carbon dioxide, but which bind to important iron-containing enzymes in the body in a manner more resembling cyanide.

 

·         Other notable nitrogen-containing drugs are drugs derived from plant alkaloids, such as morphine (there exist many alkaloids known to have pharmacological effects; in some cases, they appear natural chemical defenses of plants against predation).

 

compounds (100)

 

·         Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives), and cyanides, contain nitrogen.

 

·         The extremely strong bond in elemental nitrogen dominates nitrogen chemistry, causing difficulty for both organisms and industry in breaking the bond to convert the N2 into useful compounds, but at the same time causing release of large amounts of often useful energy when the compounds burn, explode, or decay back into nitrogen gas.

 

·         Nitrogen occurs in all living organisms, and the nitrogen cycle describes movement of the element from the air into the biosphere and organic compounds, then back into the atmosphere.

 

nitric acid (92)

 

·         Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives), and cyanides, contain nitrogen.

 

·         Chaptal's meaning was that nitrogen gas is the essential part of nitric acid, in turn formed from saltpetre (potassium nitrate), then known as nitre.

 

atmosphere (85)

 

·         Elemental nitrogen is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard conditions, constituting 78.08% by volume of Earth's atmosphere.

 

·         Nitrogen occurs in all living organisms, and the nitrogen cycle describes movement of the element from the air into the biosphere and organic compounds, then back into the atmosphere.

 

nitrate (82)

 

·         Chaptal's meaning was that nitrogen gas is the essential part of nitric acid, in turn formed from saltpetre (potassium nitrate), then known as nitre.

 

nitrogen gas (64)

 

·         The extremely strong bond in elemental nitrogen dominates nitrogen chemistry, causing difficulty for both organisms and industry in breaking the bond to convert the N2 into useful compounds, but at the same time causing release of large amounts of often useful energy when the compounds burn, explode, or decay back into nitrogen gas.

 

·         Chaptal's meaning was that nitrogen gas is the essential part of nitric acid, in turn formed from saltpetre (potassium nitrate), then known as nitre.

 

air (60)

 

·         Nitrogen occurs in all living organisms, and the nitrogen cycle describes movement of the element from the air into the biosphere and organic compounds, then back into the atmosphere.

 

·         Nitrogen is formally considered to have been discovered by Daniel Rutherford in 1772, who called it noxious air or fixed air.

 

·         The production of electronic parts such as transistors, diodes, and integrated circuits Dried and pressurized, as a dielectric gas for high-voltage equipment The manufacturing of stainless steel Used in military aircraft fuel systems to reduce fire hazard, (see inerting system) On top of liquid explosives as a safety measure Filling automotive and aircraft tires due to its inertness and lack of moisture or oxidative qualities, as opposed to air.

 

explosives (46)

 

·         Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives), and cyanides, contain nitrogen.

 

·         The production of electronic parts such as transistors, diodes, and integrated circuits Dried and pressurized, as a dielectric gas for high-voltage equipment The manufacturing of stainless steel Used in military aircraft fuel systems to reduce fire hazard, (see inerting system) On top of liquid explosives as a safety measure Filling automotive and aircraft tires due to its inertness and lack of moisture or oxidative qualities, as opposed to air.

 

ammonia (39)

 

·         Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives), and cyanides, contain nitrogen.

 

decay (28)

 

·         The extremely strong bond in elemental nitrogen dominates nitrogen chemistry, causing difficulty for both organisms and industry in breaking the bond to convert the N2 into useful compounds, but at the same time causing release of large amounts of often useful energy when the compounds burn, explode, or decay back into nitrogen gas.

 

————————————–

· This summary was produced by WikiSummarizer for Wikipedia

 

· WikiSummarizer is an automated text summarization and text mining application created by Context Discovery Inc

 

· If you are interested in using WikiSummarizer technology please contact us at wikisummarizer@contextdiscovery.com

 

——————————————————

About Context Discovery WikiSummarizer

WikiSummarizer is a Web-based summarization portal that summarizes Web pages and documents in English, French, Spanish, and German.

The summaries are stored in organizational knowledge library. Report writers, including web-based ones, can be easily used for knowledge mining of the summaries, keywords and links. The Wikipedia Knowledge Base search function works as a back-of-the-book index pointing to the most relevant summaries and links.

The keywords and summaries are easily exported to other applications such as word editors, browsers, mind mapping applications like Mindjet MindManager, MindGenius, XMind, and any other mind mapping application.

The Visual Summary can be navigated in any browser on Windows, Mac, Linux, iPhone, iPad and Android devices.

For more information about installing WikiSummarizer for your organization or as a cloud server please contact wikisummarizer@contextdiscovery.com

 

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Posted by Henry | Comments Off

Carbon: Wikipedia Visual Summary by WikiSummarizer

Thursday, November 3rd, 2011

This Visual Summary presents the keywords and the key summaries of the Wikipedia article about "Carbon". The Visual Summary map was automatically created by WikiSummarizer.

WikiSummarizer is a Web-based application that summarizes Wikipedia articles and provides Wikipedia Knowledge Base for comprehensive references, and as learning tool. The Wikipedia summaries can be exported to word editors, browsers, mind mapping applications, databases and content management systems.

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Wikipedia article:  Carbon

 

Carbon

 

Carbon (100)

 

·         Carbon is one of the few elements known since antiquity.

 

·         There are several allotropes of carbon of which the best known are graphite, diamond, and amorphous carbon.

 

·         All carbon allotropes are solids under normal conditions with graphite being the most thermodynamically stable form.

 

·         The most common oxidation state of carbon in inorganic compounds is +4, while +2 is found in carbon monoxide and other transition metal carbonyl complexes.

 

·         The largest sources of inorganic carbon are limestones, dolomites and carbon dioxide, but significant quantities occur in organic deposits of coal, peat, oil and methane clathrates.

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Boron: Wikipedia Visual Summary by WikiSummarizer

Friday, October 28th, 2011

This Visual Summary presents the keywords and the key summaries of the Wikipedia article about "Boron". The Visual Summary map was automatically created by WikiSummarizer.

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Wikipedia article:  Boron

 

 

Boron (100)

 

·         Boron is a metalloid.

 

·         However, boron is concentrated on Earth by the water-solubility of its more common naturally occurring compounds, the borate minerals.

 

·         Chemically uncombined boron is not found naturally on Earth.

 

·         Industrially, very pure isolated boron is produced with difficulty, as boron tends to form refractory materials containing small amounts of carbon or other elements.

 

·         Several allotropes of boron exist: amorphous boron is a brown powder and crystalline boron is black, extremely hard (about 9.5 on Mohs' scale), and a poor conductor at room temperature.

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Beryllium: Wikipedia Visual Summary by WikiSummarizer

Thursday, October 27th, 2011

This Visual Summary presents the keywords and the key summaries of the Wikipedia article about "Beryllium". The Visual Summary map was automatically created by WikiSummarizer.

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Wikipedia article:  Beryllium

 

Beryllium

 

Beryllium (100)

 

·         Notable gemstones which contain beryllium include beryl (aquamarine, emerald) and chrysoberyl.

 

·         Because of its low density and atomic mass, beryllium is relatively transparent to X-rays and other forms of ionizing radiation; therefore, it is the most common window material for X-ray equipment and in particle physics experiments.

 

·         The high thermal conductivity of beryllium and beryllium oxide have led to their use in heat transport and heat sinking applications.

 

·         Beryllium has exceptional flexural rigidity (Young's modulus 287 GPa) and a reasonably high melting point.

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Lithium: Wikipedia Visual Summary by WikiSummarizer

Wednesday, October 26th, 2011

This Visual Summary presents the keywords and the key summaries of the Wikipedia article about "Lithium". The Visual Summary map was automatically created by WikiSummarizer.

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Here are the 10 most important keywords and summaries in the Wikipedia article describing "Lithium"

 

Wikipedia article:  Lithium

 

Lithium

 

Lithium (100)

 

·         Like all alkali metals, lithium is highly reactive and flammable.

 

·         When cut open, lithium exhibits a metallic luster, but contact with moist air corrodes the surface quickly to a dull silvery gray, then black, tarnish.

 

·         Because of its high reactivity, lithium never occurs free in nature, and instead, only appears in compounds, which are usually ionic.

 

·         Lithium occurs in a number of pegmatitic minerals, but due to its solubility as an ion is present in ocean water and is commonly obtained from brines and clays. (more…)

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Hydrogen: Wikipedia summary by WikiSummarizer

Monday, October 24th, 2011

This Visual Summary presents the keywords and the key summaries of the Wikipedia article about "Hydrogen". The Visual Summary map was automatically created by WikiSummarizer.

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Here are the 10 most important keywords and summaries in the Wikipedia article describing "Hydrogen"

 

Wikipedia article:  Hydrogen

 

Hydrogen

 

Hydrogen (100)

 

·         It is represented by the symbol H. With an average atomic weight of 1.00794 u (1.007825 u for Hydrogen-1), hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass.

 

·         Stars in the main sequence are mainly composed of hydrogen in its plasma state.

 

·         Naturally occurring elemental hydrogen is relatively rare on Earth.

 

·         The most common isotope of hydrogen is protium (name rarely used, symbol H) with a single proton and no neutrons.

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