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NH4
NH4 or NH 4 or NH-4 may refer to: * Ammonium, the cation in chemistry * National Highway 4 (India), new numbering for a National Highway in India * National Highway 4 (India, old numbering) Route 4, or Highway 4, may refer to several highways in the following countries: International * AH4, Asian Highway 4 * European route E04 * European route E004 * Cairo – Cape Town Highway Albania * SH-4 road in Albania from Durrës to Ka ..., a major National Highway in western and southern India * New Hampshire Route 4, a short state highway located in eastern Strafford County, New Hampshire, United States {{Letter-NumberCombDisambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonium
Ammonium is a modified form of ammonia that has an extra hydrogen atom. It is a positively charged (cationic) polyatomic ion, molecular ion with the chemical formula or . It is formed by the protonation, addition of a proton (a hydrogen nucleus) to ammonia (). Ammonium is also a general name for positively charged (protonated) substituted amines and quaternary ammonium cations (), where one or more hydrogen atoms are replaced by Organic compound, organic or other groups (indicated by R). Not only is ammonium a source of nitrogen and a key metabolite for many living organisms, but it is an integral part of the global nitrogen cycle. As such, human impact in recent years could have an effect on the biological communities that depend on it. Acid–base properties The ammonium ion is generated when ammonia, a weak base, reacts with Brønsted–Lowry acid–base theory, Brønsted acids (proton donors): : The ammonium ion is mildly acidic, reacting with Brønsted bases to return ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Highway 4 (India)
National Highway 4, or NH 4, is the major highway in the Indian union territory of Andaman and Nicobar Islands. It is 230.7 km in length. This road running from the capital city of Port Blair to Diglipur connects all the major towns of Ferrargunj, Baratang, Kadamtala, Rangat, Billiground, Nimbudera and Mayabunder. This highway is known as the Great Andaman Trunk Road. Prior 1970s to early 1990s transportation of men and goods used to take several days by sea route now can be completed in a matter of 10–12 hours. NH-4 facilitates movement of essential commodities, access to health care facilities, etc. year-round. ATR passes through the buffer zone of the Jarwa Reserve between Jirkatang to the Middle Strait where laws are in place to minimize traveler contact with the native tribe of Jarawa. Only vehicle convoys with armed escorts are allowed. This highway is currently undergoing a major upgrade and construction of two major bridges under NHIDCL of ₹ 1511.22 crore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Highway 4 (India, Old Numbering)
Route 4, or Highway 4, may refer to several highways in the following countries: International * AH4, Asian Highway 4 * European route E04 * European route E004 * Cairo – Cape Town Highway Albania * SH-4 road in Albania from Durrës to Kakavijë passing through Lushnjë, Fier, Ballsh, Tepelenë and Gjirokastër. Australia New South Wales * M4 Western Motorway (Sydney) * Western Distributor (Sydney) Northern Territory * Lasseter Highway, NT * ** Tjukaruru Road ** Great Central Road Queensland * Port of Brisbane Motorway * Capricorn Highway * Scenic Highway (Queensland), Scenic Highway, Queensland Tasmania * Esk Highway, Tasmania Western Australia * State Route 4 (Western Australia) – Tonkin Highway Austria * Ost Autobahn Belgium *R4 road (Belgium) Bolivia * Route 4 (Bolivia), National Route 4 (Bolivia) Bulgaria * A4 motorway (Bulgaria) * I-4 road (Bulgaria) Burma *National Highway 4 (Burma) Cambodia *National Highway 4 (Cambodia) Canada * Alberta H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
