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- A/D Converter: A/D converter stands for analogue to digital converter. This piece of equipment will take the analogue signal from a sensor and convert it to digital data for processing>more
- A380: the flying giant: A380, will be the greatest airliner developed with one length of 72 meters and a wing span of 79 meters; it will be able to transport 555 passengers dislocates to you on two plans....>more
- ab (atobarn): 10-18 barns. A unit used to measure cross-section. The inverse of this unit is used to measure integrated luminosity. >more
- Abatement: A process where toxic or other hazardous substances are removed from a liquid or gas. (e.g. Removing copper particles from CMP slurry) >more
- abductors: Abductors are muscles that work to move the limbs away from the median of the body.>more
- Abiotic: An abiotic system is one which is free of biological organisms. Abiotic transformations are those brought about by a non-biological mechanism. Thus, the modification of a chemical through heating...>more
- Abort:: Terminating the acceleration process prematurely, either by inhibiting the injection mechanism or by removing circulating beam to some sort of dump. This is generally done to prevent injury to...>more
- Absentee Landlord: >more
- Absorption: The process of taking in . For a person or an animal, absorption is the process of a substance getting into the body through the eyes, skin, stomach, intestines, or lungs. Absorption may refer...>more
- Abzyme: An antibody that has catalytic activity; a catalytic antibody. In 1969, William Jencks proposed that antibodies specific for the transition state of a chemical reaction should have catalytic power....>more
- AC/DC I/O interface: A discrete interface that converts alternating current (AC) voltages from field devices into direct current (DC) signals that the processor can use. It can also convert DC signals into proportional...>more
- AC3: This is the 5.1-channel sound system specified in the digital-HDTV standard. Also known as Dolby Digital, AC-3 delivers CD-quality digital audio and provides five full-bandwidth channels for front...>more
- Acceleration-Level: Mathematical formulas working with the change in joint speeds with respect to time. Integrating accelerations twice provides displacements. See position-level and velocity-level.>more
- Accelerator: Accelerators are ring-shaped or linear devices that accelerate charged particles. More powerful than any other microscope, high-energy accelerators allow physicists to study matter at the smallest...>more
- accelerator: Accelerators are ring-shaped or linear devices that accelerate charged particles. More powerful than any other microscope, high-energy accelerators allow physicists to study matter at the smallest...>more
- Acceptable Daily Intake(ADI): Estimate of the amount of a substance in food and/or drinking water, expressed on a body weight basis that can be ingested daily over a lifetime without appreciable health risk to the consumer...>more
- Acceptance Testing (AT): The testing performed by a user to determine that an automated system (equipment or software) for a specific task or environment, e.g., a translator for a specific application and interchange...>more
- Acceptor: An impurity that can make a semi-conductor P-type by causing the absence of electrons in the conduction band, called "holes". These "holes" are carriers of positive charge. See donor.>more
- Accession: Acquiring title to additions or improvements to real property as a result of the annexation of fixtures or the accretion of alluvial deposits along the banks of streams. Another definitions:...>more
- Accident (accidental): Any incident involving a significant and unintended release of genetically modified microorganisms in the course of their contained use which could present an immediate or delayed hazard to human...>more
- Accidental release: Accidental release the unintentional discharge of a microbiological agent (i.e., microorganism or virus) or eukaryotic cell due to a failure in the containment system. >more
- Accumulator:: The storage ring in which successive pulses of antiprotons are collected in order to create an antiproton beam of reasonable intensity for colliding beams physics. The Accumulator is designed to...>more
- ACD: (Automatic Call Distributor) - A telephone system that manages incoming calls and distributes them based on caller commands or preferences. An ACD is a staple of call centers that need to direct...>more
- acequia: (crop science) An irrigation ditch or canal. >more
- Aceton: An organic compound made of oxygen, carbon and hydrogen (chemical formula CH3COCH3). It is a colorless, very volatile, extremely flammable liquid miscible with water. It is used as a solvent and...>more
- Acid: pH is a measure of the concentration of protons (H + ) in a solution and, therefore, its acidity or alkalinity . The concept was introduced by S.P.L. Sřrensen in 1909. The p stands for the...>more
- Acid deposition: Rain, snow, or any other deposition of water with an acidity greater than normal. As water falls through the air it absorbs carbon dioxide and forms carbonic acid, which has a pH of about 5.6....>more
- Acid rain: Falling rain (or snow) which has become acidic ( pH less than 5.6) as a result of its combination with gaseous pollutants, such as sulphur dioxide ( SO 2 ) and nitrogen oxides ( NO x )....>more
- Acidic: Acidic is when the concentration of the soil solution has a pH below 7.0.
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- Acidity: The level of hydrogen ion concentration in a solution. Acidity is measured on the pH scale. The pH scale is a logarithmic scale. The majority of readings go from 1 (very high acidity) to 14 (very...>more
- ACNET:: Accelerator Control NETwork. A system of computers that monitors and controls the accelerator complex. Interfaced to users through consoles in the MCR and elsewhere, including at the Captain and...>more
- Acquisition Manager (AM): The system/equipment program manager, the program manager's staff, and other DoD officials responsible for determining contract requirements for the generation, acquisition, and use of defense...>more
- Acre-foot: (crop science) The volume of water that would >more
- Acrobat: Family of computer programs created by Adobe Systems Inc. that allow you to create and view Portable Document Format (PDF) files on any PC, Mac or UNIX computer. Acrobat Distiller is used to...>more
- Actin: Actin is a muscle protein localized in the I-band of the myofibril; acting along with myosin, it is responsible for contraction and relaxation of muscle.>more
- Acting: A person who holds a position temporarily while a permanent replacement is being sought. Used in ST organizational announcements.>more
- Action: A set of control instructions prompting a PLC to perform a certain control
function during the execution of a sequential function chart step.>more
- ACTIVATED CARBON: By Harry Marsh , North Shields, UK Francisco Rodríguez Reinoso , The University of Alicante, Spain. Description Recent years have seen an expansion in speciality uses of activated...>more
- Activated carbon A: material produced by partially burning a carbon-based material and then increasing its absorptive capacity by steam treatment, which creates a large surface area. The product is used to adsorb...>more
- Activated sludge: In biological wastewater treatment, activated sludge refers to either the active population of micro-organisms , including bacteria and other living organisms such as fungi and protozoa...>more
- Active Component: A (non-mechanical) circuit component that has gain or switches current flow, such as a diode,transistor, etc. >more
- Active zone: The area in presynaptic terminals where the specialized secretory machinery for the focused release of neurotransmitters packaged in vesicles is concentrated (i.e. synapsin and related proteins)....>more
- Actuator: A device which performs the physical movement of a robot. 3 types electric hydraulic and pneumatic.>more
- Acute: Occurring over a short time [compare with chronic ]. Acute may refer to: Acute angles Acute accent Acute (medical) Acute (phonetic) The Acute - a band >more
- Acute exposure: A contact between an agent and a target occurring over a short time, generally less than a day. Another definition Contact with a substance that occurs once or for only a short time (up to 14...>more
- Acute radiation effects: Effects that are caused by (usually short-term) exposure to radiation and that occur immediately after the exposure. For example, one effect of intense radiation exposure is a rapid browning...>more
- Acute radiation syndrome (ARS): The complex of symptoms brought about by excessive exposure to radiation. ARS is the result of an acute dose; some early visible symptoms may include nausea, vomiting, and fatigue, followed by a...>more
- acyclic message: An unscheduled message transmission.>more
- Ada: A computer language designed as a standard for U.S. government and NATO procurements. Ada is a required language for mission-critical projects. >more
- adaptation: A genetically determined characteristic that enhances the ability of an organism to cope with its environment. Another definition: Actions in response to actual or projected climate change and...>more
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