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  2. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...

  3. 2,4,5-Trichlorophenoxyacetic acid - Wikipedia

    en.wikipedia.org/wiki/2,4,5-Trichlorophenoxy...

    2,4,5-Trichlorophenoxyacetic acid (also known as 2,4,5-T ), a synthetic auxin, is a chlorophenoxy acetic acid herbicide used to defoliate broad-leafed plants. It was developed in the late 1940s, synthesized by reaction of 2,4,5-Trichlorophenol and chloroacetic acid. It was widely used in the agricultural industry until being phased out ...

  4. 2,4,6-Trimethylpyridine - Wikipedia

    en.wikipedia.org/wiki/2,4,6-trimethylpyridine

    2,4,6-Trimethylpyridine ( 2,4,6-collidine) is an organic compound which belongs to the heterocycles (more precisely, heteroaromatics ). It consists of a pyridine ring substituted with three methyl groups. It belongs to the substance group of the collidines, a group of six constitutional isomers. 2,4,6-trimethylpyridine is the most well-known ...

  5. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.

  6. 2,4,6-Trichlorophenol - Wikipedia

    en.wikipedia.org/wiki/2,4,6-Trichlorophenol

    2,4,6-Trichlorophenol, also known as TCP, phenaclor, Dowicide 2S, Dowcide 2S, omal, is a chlorinated phenol that has been used as a fungicide, herbicide, insecticide, antiseptic, [3] defoliant, and glue preservative. [4] It is a clear to yellowish crystalline solid with a strong, phenolic odor. It decomposes on heating to produce toxic and ...

  7. 2,4-Dithiapentane - Wikipedia

    en.wikipedia.org/wiki/2,4-Dithiapentane

    2,4-Dithiapentane is the dimethyldithioacetal of formaldehyde. Its synthesis was first reported in 1941. Its synthesis was first reported in 1941. [ 1 ] [ 2 ] It is industrially prepared by the acid-catalyzed condensation of methyl mercaptan , the main aromatic compound in both halitosis and foot odor and a secondary compound in flatulence ...

  8. 1,2,4-Triazole - Wikipedia

    en.wikipedia.org/wiki/1,2,4-Triazole

    1,2,4-Triazole (as ligand in coordination compounds, Htrz abbreviation is sometimes used) is one of a pair of isomeric chemical compounds with molecular formula C 2 H 3 N 3, called triazoles, which have a five-membered ring of two carbon atoms and three nitrogen atoms. 1,2,4-Triazole and its derivatives find use in a wide variety of ...

  9. DreamWorks Animation will open source its MoonRay renderer ...

    www.engadget.com/dreamworks-animation-open...

    DreamWorks Animation said it will release its MoonRay ray-tracing renderer as open-source software later this year. As The Hollywood Reporter notes, DreamWorks will offer up its Arras cloud ...