nuclear energy

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energy

 [en´er-je]
power that may be translated into motion, overcoming resistance or causing a physical change; the ability to do work. Energy assumes several forms; it may be thermal (in the form of heat), electrical, mechanical, chemical, radiant, or kinetic. In doing work, the energy is changed from one form to one or more other form(s). In these changes some of the energy is “lost” in the sense that it cannot be recaptured and used again. Usually there is loss in the form of heat, which escapes or is dissipated unused; all energy changes give off a certain amount of heat.ƒ

All activities of the body require energy, and all needs are met by the consumption of food containing energy in chemical form. The human diet comprises three main sources of energy: carbohydrates, proteins, and fats. Of these three, carbohydrates most readily provide the kind of energy needed to activate muscles. Proteins work to build and restore body tissues. The body transforms chemical energy derived from food by the process of metabolism, an activity that takes place in the individual cell. Molecules of the food substances providing energy pass through the cell wall. Inside the cell, chemical reactions occur that produce the new forms of energy and yield by-products such as water and waste materials; see also adenosine triphosphate.
free energy (Gibbs free energy (G)) the energy equal to the maximum amount of work that can be obtained from a process occurring under conditions of fixed temperature and pressure.
nuclear energy energy that can be liberated by changes in the nucleus of an atom (as by fission of a heavy nucleus or by fusion of light nuclei into heavier ones with accompanying loss of mass).

nu·cle·ar en·er·gy

energy given off in the course of a nuclear reaction or stored in the formation of an atomic nucleus.

nuclear energy

Energy released mainly as heat, light and ionizing radiation as a result of changes in the nuclei of atoms. Nuclear energy is released during the spontaneous decay (fission) of naturally occurring radioactive substances and during atomic fusion reactions, as in the sun. It is also released in such devices as nuclear reactors and nuclear weapons.

energy

power that may be translated into motion, overcoming resistance, or effecting physical change; the ability to do work. Energy assumes several forms; it may be thermal (in the form of heat), electrical, mechanical, chemical, radiant or kinetic. In doing work, the energy is changed from one form to another or to several forms. In these changes some of the energy is 'lost' in the sense that it cannot be recaptured and used again. Usually there is loss in the form of heat, which escapes or is dissipated unused. All energy changes give off a certain amount of the energy as heat.
All activities of the body require energy, and all needs are met by the consumption of food containing energy in chemical form. The animal diet comprises three main sources of energy: carbohydrates, proteins and fats. Of these three, carbohydrates most readily provide the kind of energy needed to activate muscles. Proteins work to build and restore body tissues. The body transforms chemical energy derived from food by the process of metabolism, an activity that takes place in the individual cell. Molecules of the food substances providing energy pass through the cell membrane. Inside the cell, chemical reactions occur that produce the new forms of energy and yield by-products such as water and waste materials. See also adenosine.

dietary energy
the total energy intake in the diet is the gross energy. Digestible energy is gross energy less fecal energy. Metabolizable energy is digestible energy less that lost in fermentation in the gut, energy lost in urine. Net energy is metabolizable energy less energy used in specific dynamic action response. Expressed as joules, calories or occasionally therms (1 calorie=4.18 joule).
energy density
see caloric density.
energy feeds
feeds with a high carbohydrate content and therefore low fiber (<18%) and="" protein=""><20%)>
free energy
the energy equal to the maximum amount of work that can be obtained from a process occurring under conditions of fixed temperature and pressure.
nuclear energy
energy that can be liberated by changes in the nucleus of an atom (as by fission of a heavy nucleus or by fusion of light nuclei into heavier ones with accompanying loss of mass).
nutritional energy deficiency
causes loss of body weight, milk, egg and wool production. Continued for long periods or severe restriction causes particular metabolic upsets in pregnant and lactating ewes and cows—see pregnancy toxemia, acetonemia (2); in neonates, hypoglycemia. In others causes emaciation, inanition, starvation.
energy production
production of ATP through oxidative phosphorylation or anaerobic glycolysis.
energy requirements
generally vary between species and particularly between individuals. They are determined by many factors, especially age, level of activity, physiological status and body size, specifically body surface area. The basal energy requirement (BER) is the level required by a healthy animal at complete rest in a neutral environmental temperature. It can be calculated by using several formulae, based on body weight or body surface area, which is then used in the further calculation of the maintenance energy requirement (MER) which takes into account the individual animal's level of activity or disease status.
energy reserves
any reduced carbon stored in compounds such as fatty acids in triacylglycerols of adipose tissue, glucose in glycogen, and amino acids in protein releases energy, ultimately in the form of ATP on oxidation of the carbon.
energy transfer
conversion of energy from one form usually chemical in the form of ATP to another usually chemical, but can be electrical, mechanical or heat energy.
References in periodicals archive ?
It is to be mentioned that Sudan represents one of the 35 states members of the Board of Governors of the International Atomic Energy Agency (IAEA) representative of the African Group for the second year respectively.
The Country Programme Framework (CPF) constitutes the frame of reference for the short and medium-term planning of technical cooperation between the UAE and the International Atomic Energy Agency (IAEA) for the period 2012--2016.
The Japanese side will be represented by officials from the Nuclear Safety Commission and the Nuclear and Industrial Safety Agency while members of the China Atomic Energy Authority will attend the bilateral meeting.
Singh said the government will strengthen the Atomic Energy Regulatory Board and make it a truly autonomous and independent regulatory authority.
Summary: Tunisia appreciated Tuesday steps adopted by the International Atomic Energy Agency's (IAEA) to strengthen the safeguard meausres with member states.
Director General of the Sudanese Atomic Energy Agency, Mohamed Ahmed Hassan el-Tayeb was quoted by SUNA as saying the government began planning to make use of nuclear energy to produce electricity earlier this year.
Iran tends to use the fuel to create atomic energy.
According to a statement aired on the web-page of Prime Ministry Press Center, Erdogan told Ahmadinejad that, "we are on the eve of an important period when you will formally submit the understanding that was revealed with the Joint Declaration to International Atomic Energy Agency.
Summary: Atomic Energy Organization of Iran Director Ali-Akbar Salehi said the door is still open to talks on a nuclear swap deal with the West
Summary: Iran plans to build 10 new uranium enrichment facilities during the next Iranian year, its atomic energy chief was quoted as saying, in comments likely to further raise tension with the West.
Head of the Jordan Atomic Energy Khalid Touqan and the Governor of Algerian Atomic Energy Organization Mohammad Dardour signed a nuclear power generation deal
Ex-UN Envoy Appointed Head of Iran's Atomic Energy Organization

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