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Herbicidal Warfare
Herbicidal warfare is the use of substances primarily designed to destroy the plant-based ecosystem of an area. Although herbicidal warfare use chemical substances, its main purpose is to disrupt agricultural food production and/or to destroy plants which provide cover or concealment to the enemy, not to asphyxiate or poison humans and/or destroy human-made structures. Herbicidal warfare has been forbidden by the Environmental Modification Convention since 1978, which bans "any technique for changing the composition or structure of the Earth's Biota (ecology), biota". History Modern day herbicidal warfare resulted from military research discoveries of plant growth regulators during World War II, and is therefore a technological advance on the scorched earth practices by armies throughout history to deprive the enemy of food and cover. Work on military herbicides began in England in 1940, and by 1944, the United States joined in the effort. Even though herbicides are chemicals, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry H
Henry may refer to: People and fictional characters * Henry (given name), including lists of people and fictional characters * Henry (surname) * Henry, a stage name of François-Louis Henry (1786–1855), French baritone Arts and entertainment * Henry (2011 film), ''Henry'' (2011 film), a Canadian short film * Henry (2015 film), ''Henry'' (2015 film), a virtual reality film * ''Henry: Portrait of a Serial Killer'', a 1986 American crime film * Henry (comics), ''Henry'' (comics), an American comic strip created in 1932 by Carl Anderson * "Henry", a song by New Riders of the Purple Sage Places Antarctica * Henry Bay, Wilkes Land Australia *Henry River (New South Wales) *Henry River (Western Australia) Canada * Henry Lake (Vancouver Island), British Columbia * Henry Lake (Halifax County), Nova Scotia * Henry Lake (District of Chester), Nova Scotia New Zealand * Lake Henry (New Zealand) * Henry River (New Zealand) United States * Henry, Illinois * Henry, Indiana * Henry, Nebras ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agent Orange
Agent Orange is a chemical herbicide and defoliant, one of the tactical uses of Rainbow Herbicides. It was used by the U.S. military as part of its herbicidal warfare program, Operation Ranch Hand, during the Vietnam War from 1962 to 1971. The U.S. was strongly influenced by the British who used Agent Orange during the Malayan Emergency. It is a mixture of equal parts of two herbicides, 2,4,5-Trichlorophenoxyacetic acid, 2,4,5-T and 2,4-Dichlorophenoxyacetic acid, 2,4-D. Agent Orange was produced in the United States beginning in the late 1940s and was used in industrial agriculture, and was also sprayed along railroads and power lines to control undergrowth in forests. During the Vietnam War, the U.S. military procured over , consisting of a fifty-fifty mixture of 2,4-D and dioxin-contaminated 2,4,5-T. Nine chemical companies produced it: Dow Chemical Company, Monsanto Company, Diamond Shamrock, Diamond Shamrock Corporation, Hercules Inc., Thompson Hayward Chemical Co., Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,4,5-Trichlorophenoxyacetic Acid
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, starting in the late 1970s due to toxicity concerns. Agent Orange, a defoliant used by the British in the Malayan Emergency and the U.S. in the Vietnam War, was equal parts 2,4,5-T and 2,4-D (2,4-dichlorophenoxyacetic acid). 2,4,5-T itself is toxic with a NOAEL of 3 mg/kg/day and a LOAEL of 10 mg/kg/day. Agent Pink contained 100% 2,4,5-T (dioxin contaminates included). Additionally, the manufacturing process for 2,4,5-T contaminates this chemical with trace amounts of 2,3,7,8-tetrachlorodibenzo-''p''-dioxin (TCDD). TCDD is a carcinogenic persistent organic pollutant with long-term effects on the environment. With proper temperat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malayan National Liberation Army
The Malayan National Liberation Army (MNLA) was a Communist guerrilla army that fought for Malayan independence from the British Empire during the Malayan Emergency (1948–1960) and later fought against the Malaysian government in the Communist insurgency in Malaysia (1968–1989). Many MNLA fighters were former members of the Malayan Peoples' Anti-Japanese Army (MPAJA), including its leader Chin Peng. The group was also referred to as the Malayan Races Liberation Army owing to a mistranslation. In 1989 the Communist Party of Malaya signed a peace treaty with the Malaysian state, and the MNLA and the Party settled in villages in southern Thailand. Name and mistranslation ''Malayan Races Liberation Army'' is a translation from the Chinese "" where "" means "nationality" in the ethnic sense. Chin Peng has called this a mistranslation and offered the translation of ''Malayan National Liberation Army'' (MNLA). The group is also commonly known in Malay as (), which could also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defoliant
A defoliant is any herbicidal chemical sprayed or dusted on plants to cause their leaves to fall off. Defoliants are widely used for the selective removal of weeds in managing croplands and lawns. Worldwide use of defoliants, along with the development of other herbicides and pesticides, allowed for the Green Revolution, an increase in agricultural production in mid-20th century. Defoliants have also been used in warfare as a means to deprive an enemy of food crops and/or hiding cover, most notably by the United Kingdom during the Malayan Emergency and the United States in the Vietnam War. Defoliants were also used by Indonesian forces in various internal security operations. Use and application A primary application of defoliants is the selective killing of plants. Two of the oldest chemical herbicides used as defoliants are 2,4-Dichlorophenoxyacetic acid (2,4-D) and 2,4,5-Trichlorophenoxyacetic acid (2,4,5-T). 2,4-D and 2,4,5-T are absorbed by broad-leafed plants, killin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbicide
Herbicides (, ), also commonly known as weed killers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page for EPA reports on pesticide use ihere Selective herbicides control specific weed species while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called "total weed killers") kill plants indiscriminately. The combined effects of herbicides, nitrogen fertilizer, and improved cultivars has increased yields (per acre) of major crops by three to six times from 1900 to 2000. In the United States in 2012, about 91% of all herbicide usage, was determined by weight applied, in agriculture. In 2012, world pesticide expenditures totaled nearly US$24.7 billion; herbicides were about 44% of those sales and constituted the biggest portion, followed by insecticides, fungicides, and fumigants. Herbicide is also used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commonwealth Of Nations
The Commonwealth of Nations, often referred to as the British Commonwealth or simply the Commonwealth, is an International organization, international association of member states of the Commonwealth of Nations, 56 member states, the vast majority of which are former territorial evolution of the British Empire, territories of the British Empire from which it developed. They are connected through their English in the Commonwealth of Nations, use of the English language and cultural and historical ties. The chief institutions of the organisation are the Commonwealth Secretariat, which focuses on intergovernmental relations, and the Commonwealth Foundation, which focuses on non-governmental relations between member nations. Numerous List of Commonwealth organisations, organisations are associated with and operate within the Commonwealth. The Commonwealth dates back to the first half of the 20th century with the decolonisation of the British Empire through increased self-governance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malayan Emergency
The Malayan Emergency, also known as the Anti–British National Liberation War, was a guerrilla warfare, guerrilla war fought in Federation of Malaya, Malaya between communist pro-independence fighters of the Malayan National Liberation Army (MNLA) and the military forces of the Federation of Malaya and Commonwealth of Nations, Commonwealth (British Empire). The communists fought to win independence for Malaya from the British Empire and to establish a communist state, while the Malayan Federation and Commonwealth forces fought to combat communism and protect British economic and Colonialism, colonial interests.Deery, Phillip. "Malaya, 1948: Britain's Asian Cold War?" Journal of Cold War Studies 9, no. 1 (2007): 29–54.Siver, Christi L. "The other forgotten war: understanding atrocities during the Malayan Emergency." In APSA 2009 Toronto Meeting Paper. 2009., p.36 The term "Emergency" was used by the British to characterise the conflict in order to avoid referring to it as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joint Target Group
A joint or articulation (or articular surface) is the connection made between bones, ossicles, or other hard structures in the body which link an animal's skeletal system into a functional whole.Saladin, Ken. Anatomy & Physiology. 7th ed. McGraw-Hill Connect. Webp.274/ref> They are constructed to allow for different degrees and types of movement. Some joints, such as the knee, elbow, and shoulder, are self-lubricating, almost frictionless, and are able to withstand compression and maintain heavy loads while still executing smooth and precise movements. Other joints such as sutures between the bones of the skull permit very little movement (only during birth) in order to protect the brain and the sense organs. The connection between a tooth and the jawbone is also called a joint, and is described as a fibrous joint known as a gomphosis. Joints are classified both structurally and functionally. Joints play a vital role in the human body, contributing to movement, stability, and ove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mustard Gas
Mustard gas or sulfur mustard are names commonly used for the organosulfur compound, organosulfur chemical compound bis(2-chloroethyl) sulfide, which has the chemical structure S(CH2CH2Cl)2, as well as other Chemical species, species. In the wider sense, compounds with the substituents are known as ''sulfur mustards'' or ''nitrogen mustards'', respectively, where X = Cl or Br. Such compounds are potent alkylating agents, making mustard gas acutely and severely toxic. Mustard gas is a carcinogen. There is no preventative agent against mustard gas, with protection depending entirely on skin and airways protection, and no antidote exists for mustard poisoning. Also known as mustard agents, this family of compounds comprises infamous cytotoxicity, cytotoxins and blister agents with a long history of use as chemical weapons. The name ''mustard gas'' is technically incorrect; the substances, when Dispersion (chemistry), dispersed, are often not gases but a fine mist of liquid droplet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
