138 relations: Acre, Air pollution, Alcohol, Algae, Alkaline fuel cell, Alpha-Linolenic acid, Aluminium–air battery, Amyl alcohol, Animal, Anthracite, Bagasse, Benjamin K. Sovacool, Biodiesel, Biofuel, Bituminous coal, Butane, Butanol, Carbon dioxide, Carbon monoxide, Castor oil, Catalysis, Cellulose, Cetane number, Chaff, Charcoal, Coal, Coniferyl alcohol, Conversion of units, Cow dung, Deuterium, Diesel fuel, Direct methanol fuel cell, Ecalene, Elaeis, Electric generator, Electrical energy, Energy, Energy conversion efficiency, Energy density, Energy Policy (journal), Enriched uranium, Ethane, Ethanol, Ethanol fermentation, Fat, Fuel, Gallon, Gasoline, Girdler sulfide process, Glucomannan, ..., Greenhouse effect, Greenhouse gas, Heat of combustion, Hectare, Helianthus, Hemicellulose, Hexanol, Horticulture, Hydrogen, Intergovernmental Panel on Climate Change, International System of Units, Iodine value, Joule, Kilogram, Kinetic energy, Lead–acid battery, Lignin, Linoleic acid, Liquid hydrogen, List of gasoline additives, Lithium iron phosphate battery, Lithium polymer battery, Lithium-ion battery, Litre, Machine, Manure, Margin of error, Mass, Mechanical energy, Memory effect, Methane, Methanol, Mining, Monounsaturated fat, Natural gas, Nickel–cadmium battery, Nickel–iron battery, Nickel–metal hydride battery, Nitrogen oxide, Nuclear fusion, Oak Ridge National Laboratory, Oleic acid, Olive, Olive oil, Organism, Ozone depletion, Palmitic acid, Paracoumaryl alcohol, Particulates, Plant, Plant stem, Polyunsaturated fat, Potential energy, Propane, Propanol, Properties of water, Proton-exchange membrane fuel cell, Pyrolysis oil, Radioactive waste, Rapeseed, Redox, Ricinoleic acid, Ricinus, Saturated fat, Sesame, Specific energy, Stearic acid, Sugarcane, Sunflower oil, Super-iron battery, Syngas, Tilde, Tonne of oil equivalent, Tritium, Turbine, United Nations, Uraninite, Uranium, Uranium mining, Uranium-235, Vacuum distillation, Volatile organic compound, Volume, Wood, Wood ash, Wood fuel, Year, Zinc–air battery. Expand index (88 more) »
Acre
The acre is a unit of land area used in the imperial and US customary systems.
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Air pollution
Air pollution occurs when harmful or excessive quantities of substances including gases, particulates, and biological molecules are introduced into Earth's atmosphere.
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Alcohol
In chemistry, an alcohol is any organic compound in which the hydroxyl functional group (–OH) is bound to a carbon.
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Algae
Algae (singular alga) is an informal term for a large, diverse group of photosynthetic organisms that are not necessarily closely related, and is thus polyphyletic.
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Alkaline fuel cell
The alkaline fuel cell (AFC), also known as the Bacon fuel cell after its British inventor, Francis Thomas Bacon, is one of the most developed fuel cell technologies.
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Alpha-Linolenic acid
α-Linolenic acid (ALA) is an n−3 fatty acid.
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Aluminium–air battery
Aluminium–air batteries (Al–air batteries) produce electricity from the reaction of oxygen in the air with aluminium.
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Amyl alcohol
An amyl alcohol is any of 8 alcohols with the formula C5H12OH.
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Animal
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
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Anthracite
Anthracite, often referred to as hard coal, is a hard, compact variety of coal that has a submetallic luster.
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Bagasse
Bagasse is the fibrous matter that remains after sugarcane or sorghum stalks are crushed to extract their juice.
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Benjamin K. Sovacool
Benjamin K. Sovacool is director of the Danish Center for Energy Technology at the Department of Business Technology and Development and a professor of social sciences at Aarhus University.
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Biodiesel
Biodiesel refers to a vegetable oil- or animal fat-based diesel fuel consisting of long-chain alkyl (methyl, ethyl, or propyl) esters.
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Biofuel
A biofuel is a fuel that is produced through contemporary biological processes, such as agriculture and anaerobic digestion, rather than a fuel produced by geological processes such as those involved in the formation of fossil fuels, such as coal and petroleum, from prehistoric biological matter.
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Bituminous coal
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt.
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Butane
Butane is an organic compound with the formula C4H10 that is an alkane with four carbon atoms.
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Butanol
Butanol (also called butyl alcohol (or βουτανόλη in Greek)) is a four-carbon alcohol with a formula of C4H9OH, which occurs in five isomeric structures, from a straight-chain primary alcohol to a branched-chain tertiary alcohol; all are a butyl or isobutyl group linked to a hydroxyl group (sometimes represented as BuOH, n-BuOH, and i-BuOH).
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Carbon dioxide
Carbon dioxide (chemical formula) is a colorless gas with a density about 60% higher than that of dry air.
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Carbon monoxide
Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air.
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Castor oil
Castor oil is a vegetable oil obtained by pressing the seeds of the castor oil plant (Ricinus communis).
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Catalysis
Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalysthttp://goldbook.iupac.org/C00876.html, which is not consumed in the catalyzed reaction and can continue to act repeatedly.
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Cellulose
Cellulose is an organic compound with the formula, a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units.
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Cetane number
Cetane number (cetane rating) is an indicator of the combustion speed of diesel fuel and compression needed for ignition.
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Chaff
Chaff is the dry, scaly protective casings of the seeds of cereal grain, or similar fine, dry, scaly plant material such as scaly parts of flowers, or finely chopped straw.
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Charcoal
Charcoal is the lightweight black carbon and ash residue hydrocarbon produced by removing water and other volatile constituents from animal and vegetation substances.
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Coal
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams.
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Coniferyl alcohol
Coniferyl alcohol is an organic compound.
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Conversion of units
Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors.
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Cow dung
Cow dung, also known as cow pats, cow pies or cow manure, is the waste product of bovine animal species.
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Deuterium
Deuterium (or hydrogen-2, symbol or, also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the other being protium, or hydrogen-1).
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Diesel fuel
Diesel fuel in general is any liquid fuel used in diesel engines, whose fuel ignition takes place, without any spark, as a result of compression of the inlet air mixture and then injection of fuel.
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Direct methanol fuel cell
Direct-methanol fuel cells or DMFCs are a subcategory of proton-exchange fuel cells in which methanol is used as the fuel.
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Ecalene
Ecalene is a trademarked mixture of alcohols, which may be used as fuel or as a fuel additive.
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Elaeis
Elaeis is a genus of palms containing two species, called oil palms.
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Electric generator
In electricity generation, a generator is a device that converts motive power (mechanical energy) into electrical power for use in an external circuit.
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Electrical energy
Electrical energy is the energy newly derived from electric potential energy or kinetic energy.
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Energy
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.
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Energy conversion efficiency
Energy conversion efficiency (η) is the ratio between the useful output of an energy conversion machine and the input, in energy terms.
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Energy density
Energy density is the amount of energy stored in a given system or region of space per unit volume.
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Energy Policy (journal)
Energy Policy is a monthly peer-reviewed academic journal covering research on energy policy and energy supply.
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Enriched uranium
Enriched uranium is a type of uranium in which the percent composition of uranium-235 has been increased through the process of isotope separation.
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Ethane
Ethane is an organic chemical compound with chemical formula.
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Ethanol
Ethanol, also called alcohol, ethyl alcohol, grain alcohol, and drinking alcohol, is a chemical compound, a simple alcohol with the chemical formula.
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Ethanol fermentation
Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products.
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Fat
Fat is one of the three main macronutrients, along with carbohydrate and protein.
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Fuel
A fuel is any material that can be made to react with other substances so that it releases energy as heat energy or to be used for work.
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Gallon
The gallon is a unit of measurement for fluid capacity in both the US customary units and the British imperial systems of measurement.
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Gasoline
Gasoline (American English), or petrol (British English), is a transparent, petroleum-derived liquid that is used primarily as a fuel in spark-ignited internal combustion engines.
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Girdler sulfide process
The Girdler sulfide (GS) process, also known as the GeibSpevack (GS) process, is an industrial production method for filtering out of natural water the heavy water (deuterium oxide.
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Glucomannan
Glucomannan is a water-soluble polysaccharide that is considered a dietary fiber.
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Greenhouse effect
The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere.
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Greenhouse gas
A greenhouse gas is a gas in an atmosphere that absorbs and emits radiant energy within the thermal infrared range.
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Heat of combustion
The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it.
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Hectare
The hectare (SI symbol: ha) is an SI accepted metric system unit of area equal to a square with 100 meter sides, or 10,000 m2, and is primarily used in the measurement of land.
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Helianthus
Helianthus or sunflower is a genus of plants comprising about 70 species Flora of North America.
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Hemicellulose
A hemicellulose (also known as polyose) is any of several heteropolymers (matrix polysaccharides), such as arabinoxylans, present along with cellulose in almost all plant cell walls.
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Hexanol
Hexanol may refer to any of the following isomeric organic compounds with the formula C6H13OH: |- ! Structure !! Type !! IUPAC name !! Boiling point (°C) |- | | Primary | Hexan-1-ol | 158 |- | | Secondary | Hexan-2-ol | 140 |- | | Secondary | Hexan-3-ol | 135 |- | | Primary | 2-Methylpentan-1-ol | 147 |- | | Primary | 3-Methylpentan-1-ol | 152 |- | | Primary | 4-Methylpentan-1-ol | 151 |- | | Tertiary | 2-Methylpentan-2-ol | 121 |- | | Secondary | 3-Methylpentan-2-ol | 134 |- | | Secondary | 4-Methylpentan-2-ol | 131 |- | | Secondary | 2-Methylpentan-3-ol | 126 |- | | Tertiary | 3-Methylpentan-3-ol | 122 |- | | Primary | 2,2-Dimethylbutan-1-ol | 137 |- | | Primary | 2,3-Dimethylbutan-1-ol | 145 |- | | Primary | 3,3-Dimethylbutan-1-ol | 143 |- | | Tertiary | 2,3-Dimethylbutan-2-ol | 119 |- | | Secondary | 3,3-Dimethylbutan-2-ol | 120 |- | | Primary | 2-Ethylbutan-1-ol | 146 |- |.
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Horticulture
Horticulture is the science and art of growing plants (fruits, vegetables, flowers, and any other cultivar).
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Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
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Intergovernmental Panel on Climate Change
The Intergovernmental Panel on Climate Change (IPCC) is a scientific and intergovernmental body under the auspices of the United Nations, set up at the request of member governments, dedicated to the task of providing the world with an objective, scientific view of climate change and its political and economic impacts.
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International System of Units
The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.
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Iodine value
The iodine value (or iodine adsorption value or iodine number or iodine index) in chemistry is the mass of iodine in grams that is consumed by 100 grams of a chemical substance.
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Joule
The joule (symbol: J) is a derived unit of energy in the International System of Units.
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Kilogram
The kilogram or kilogramme (symbol: kg) is the base unit of mass in the International System of Units (SI), and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK, also known as "Le Grand K" or "Big K"), a cylinder of platinum-iridium alloy stored by the International Bureau of Weights and Measures at Saint-Cloud, France.
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Kinetic energy
In physics, the kinetic energy of an object is the energy that it possesses due to its motion.
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Lead–acid battery
The lead–acid battery was invented in 1859 by French physicist Gaston Planté and is the oldest type of rechargeable battery.
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Lignin
Lignin is a class of complex organic polymers that form important structural materials in the support tissues of vascular plants and some algae. Lignins are particularly important in the formation of cell walls, especially in wood and bark, because they lend rigidity and do not rot easily. Chemically, lignins are cross-linked phenolic polymers.
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Linoleic acid
Linoleic acid (LA), a carboxylic acid, is a polyunsaturated omega-6 fatty acid, an 18-carbon chain with two double bonds in cis configuration.
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Liquid hydrogen
Liquid hydrogen (LH2 or LH2) is the liquid state of the element hydrogen.
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List of gasoline additives
Gasoline additives increase gasoline's octane rating or act as corrosion inhibitors or lubricants, thus allowing the use of higher compression ratios for greater efficiency and power.
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Lithium iron phosphate battery
The lithium iron phosphate battery, also called LFP battery (with "LFP" standing for "lithium ferrophosphate"), is a type of rechargeable battery, specifically a lithium-ion battery, which uses 4 as a cathode material, and a graphitic carbon electrode with a metallic current collector grid as the anode.
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Lithium polymer battery
A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated as LiPo, LIP, Li-poly, lithium-poly and others), is a rechargeable battery of lithium-ion technology using a polymer electrolyte instead of a liquid electrolyte.
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Lithium-ion battery
A lithium-ion battery or Li-ion battery (abbreviated as LIB) is a type of rechargeable battery in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging.
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Litre
The litre (SI spelling) or liter (American spelling) (symbols L or l, sometimes abbreviated ltr) is an SI accepted metric system unit of volume equal to 1 cubic decimetre (dm3), 1,000 cubic centimetres (cm3) or 1/1,000 cubic metre. A cubic decimetre (or litre) occupies a volume of 10 cm×10 cm×10 cm (see figure) and is thus equal to one-thousandth of a cubic metre. The original French metric system used the litre as a base unit. The word litre is derived from an older French unit, the litron, whose name came from Greek — where it was a unit of weight, not volume — via Latin, and which equalled approximately 0.831 litres. The litre was also used in several subsequent versions of the metric system and is accepted for use with the SI,, p. 124. ("Days" and "hours" are examples of other non-SI units that SI accepts.) although not an SI unit — the SI unit of volume is the cubic metre (m3). The spelling used by the International Bureau of Weights and Measures is "litre", a spelling which is shared by almost all English-speaking countries. The spelling "liter" is predominantly used in American English. One litre of liquid water has a mass of almost exactly one kilogram, because the kilogram was originally defined in 1795 as the mass of one cubic decimetre of water at the temperature of melting ice. Subsequent redefinitions of the metre and kilogram mean that this relationship is no longer exact.
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Machine
A machine uses power to apply forces and control movement to perform an intended action.
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Manure
Manure is organic matter, mostly derived from animal feces except in the case of green manure, which can be used as organic fertilizer in agriculture.
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Margin of error
The margin of error is a statistic expressing the amount of random sampling error in a survey's results.
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Mass
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.
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Mechanical energy
In physical sciences, mechanical energy is the sum of potential energy and kinetic energy.
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Memory effect
Memory effect, also known as battery effect, lazy battery effect, or battery memory, is an effect observed in nickel-cadmium and nickel–metal hydride rechargeable batteries that causes them to hold less charge.
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Methane
Methane is a chemical compound with the chemical formula (one atom of carbon and four atoms of hydrogen).
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Methanol
Methanol, also known as methyl alcohol among others, is a chemical with the formula CH3OH (a methyl group linked to a hydroxyl group, often abbreviated MeOH).
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Mining
Mining is the extraction of valuable minerals or other geological materials from the earth, usually from an orebody, lode, vein, seam, reef or placer deposit.
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Monounsaturated fat
In biochemistry and nutrition, monounsaturated fatty acids (abbreviated MUFAs, or more plainly monounsaturated fats) are fatty acids that have one double bond in the fatty acid chain with all of the remainder carbon atoms being single-bonded.
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Natural gas
Natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.
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Nickel–cadmium battery
The nickel–cadmium battery (NiCd battery or NiCad battery) is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes.
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Nickel–iron battery
The nickel–iron battery (NiFe battery) is a rechargeable battery having nickel(III) oxide-hydroxide positive plates and iron negative plates, with an electrolyte of potassium hydroxide.
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Nickel–metal hydride battery
A nickel metal hydride battery, abbreviated NiMH or Ni–MH, is a type of rechargeable battery.
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Nitrogen oxide
Nitrogen oxide may refer to a binary compound of oxygen and nitrogen, or a mixture of such compounds.
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Nuclear fusion
In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).
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Oak Ridge National Laboratory
Oak Ridge National Laboratory (ORNL) is an American multiprogram science and technology national laboratory sponsored by the U.S. Department of Energy (DOE) and administered, managed, and operated by UT-Battelle as a federally funded research and development center (FFRDC) under a contract with the DOE.
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Oleic acid
Oleic acid is a fatty acid that occurs naturally in various animal and vegetable fats and oils.
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Olive
The olive, known by the botanical name Olea europaea, meaning "European olive", is a species of small tree in the family Oleaceae, found in the Mediterranean Basin from Portugal to the Levant, the Arabian Peninsula, and southern Asia as far east as China, as well as the Canary Islands and Réunion.
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Olive oil
Olive oil is a liquid fat obtained from olives (the fruit of Olea europaea; family Oleaceae), a traditional tree crop of the Mediterranean Basin.
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Organism
In biology, an organism (from Greek: ὀργανισμός, organismos) is any individual entity that exhibits the properties of life.
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Ozone depletion
Ozone depletion describes two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere(the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.
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Palmitic acid
Palmitic acid, or hexadecanoic acid in IUPAC nomenclature, is the most common saturated fatty acid found in animals, plants and microorganisms.
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Paracoumaryl alcohol
Paracoumaryl alcohol, also called p-coumaryl alcohol, 4-coumaryl alcohol, 4-hydroxycinnamyl alcohol, or 4-(3-hydroxy-1-propenyl)phenol, is a phytochemical, one of the monolignols.
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Particulates
Atmospheric aerosol particles, also known as atmospheric particulate matter, particulate matter (PM), particulates, or suspended particulate matter (SPM) are microscopic solid or liquid matter suspended in Earth's atmosphere.
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Plant
Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae.
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Plant stem
A stem is one of two main structural axes of a vascular plant, the other being the root.
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Polyunsaturated fat
Polyunsaturated fats are fats in which the constituent hydrocarbon chain possesses two or more carbon–carbon double bonds.
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Potential energy
In physics, potential energy is the energy possessed by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
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Propane
Propane is a three-carbon alkane with the molecular formula C3H8.
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Propanol
There are two isomers of propanol.
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Properties of water
Water is a polar inorganic compound that is at room temperature a tasteless and odorless liquid, which is nearly colorless apart from an inherent hint of blue. It is by far the most studied chemical compound and is described as the "universal solvent" and the "solvent of life". It is the most abundant substance on Earth and the only common substance to exist as a solid, liquid, and gas on Earth's surface. It is also the third most abundant molecule in the universe. Water molecules form hydrogen bonds with each other and are strongly polar. This polarity allows it to separate ions in salts and strongly bond to other polar substances such as alcohols and acids, thus dissolving them. Its hydrogen bonding causes its many unique properties, such as having a solid form less dense than its liquid form, a relatively high boiling point of 100 °C for its molar mass, and a high heat capacity. Water is amphoteric, meaning that it is both an acid and a base—it produces + and - ions by self-ionization.
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Proton-exchange membrane fuel cell
Proton-exchange membrane fuel cells, also known as polymer electrolyte membrane (PEM) fuel cells (PEMFC), are a type of fuel cell being developed mainly for transport applications, as well as for stationary fuel-cell applications and portable fuel-cell applications.
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Pyrolysis oil
Pyrolysis oil, sometimes also known as biocrude or bio-oil, is a synthetic fuel under investigation as substitute for petroleum.
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Radioactive waste
Radioactive waste is waste that contains radioactive material.
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Rapeseed
Rapeseed (Brassica napus), also known as rape, oilseed rape, (and, in the case of one particular group of cultivars, canola), is a bright-yellow flowering member of the family Brassicaceae (mustard or cabbage family), cultivated mainly for its oil-rich seed.
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Redox
Redox (short for reduction–oxidation reaction) (pronunciation: or) is a chemical reaction in which the oxidation states of atoms are changed.
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Ricinoleic acid
Ricinoleic acid, formally called 12-hydroxy-9-cis-octadecenoic acid is a fatty acid.
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Ricinus
Ricinus communis, the castor bean or castor oil plant, is a species of perennial flowering plant in the spurge family, Euphorbiaceae.
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Saturated fat
A saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds.
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Sesame
Sesame (Sesamum indicum) is a flowering plant in the genus Sesamum, also called benne.
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Specific energy
Specific energy is energy per unit mass.
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Stearic acid
Stearic acid is a saturated fatty acid with an 18-carbon chain and has the IUPAC name octadecanoic acid.
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Sugarcane
Sugarcane, or sugar cane, are several species of tall perennial true grasses of the genus Saccharum, tribe Andropogoneae, native to the warm temperate to tropical regions of South and Southeast Asia, Polynesia and Melanesia, and used for sugar production.
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Sunflower oil
Sunflower oil is the non-volatile oil pressed from the seeds of sunflower (Helianthus annuus).
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Super-iron battery
The Super-iron battery is a moniker for a proposed class of rechargeable electric battery.
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Syngas
Syngas, or synthesis gas, is a fuel gas mixture consisting primarily of hydrogen, carbon monoxide, and very often some carbon dioxide.
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Tilde
The tilde (in the American Heritage dictionary or; ˜ or ~) is a grapheme with several uses.
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Tonne of oil equivalent
The tonne of oil equivalent (toe) is a unit of energy defined as the amount of energy released by burning one tonne of crude oil.
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Tritium
Tritium (or; symbol or, also known as hydrogen-3) is a radioactive isotope of hydrogen.
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Turbine
A turbine (from the Latin turbo, a vortex, related to the Greek τύρβη, tyrbē, meaning "turbulence") is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work.
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United Nations
The United Nations (UN) is an intergovernmental organization tasked to promote international cooperation and to create and maintain international order.
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Uraninite
Uraninite, formerly pitchblende, is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO2, but due to oxidation the mineral typically contains variable proportions of U3O8.
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Uranium
Uranium is a chemical element with symbol U and atomic number 92.
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Uranium mining
Uranium mining is the process of extraction of uranium ore from the ground.
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Uranium-235
Uranium-235 (235U) is an isotope of uranium making up about 0.72% of natural uranium.
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Vacuum distillation
Vacuum distillation is a method of distillation performed under reduced pressure.
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Volatile organic compound
Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary room temperature.
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Volume
Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains.
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Wood
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants.
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Wood ash
Wood ash is the residue powder left after the combustion of wood, such as burning wood in a home fireplace or an industrial power plant.
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Wood fuel
Wood fuel (or fuelwood) is a fuel, such as firewood, charcoal, chips, sheets, pellets, and sawdust.
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Year
A year is the orbital period of the Earth moving in its orbit around the Sun.
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Zinc–air battery
Zinc–air batteries (non-rechargeable; IEC codes: A, P), and zinc–air fuel cells (mechanically rechargeable) are metal-air batteries powered by oxidizing zinc with oxygen from the air.
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References
[1] https://en.wikipedia.org/wiki/Energy_content_of_biofuel