| 释义 |
activation
ac·ti·vate A0070600 (ăk′tə-vāt′)tr.v. ac·ti·vat·ed, ac·ti·vat·ing, ac·ti·vates 1. To set in motion; make active or more active.2. To organize or create (a military unit, for example): activate the National Guard.3. To treat (sewage) with aeration and bacteria to aid decomposition.4. Chemistry To accelerate a reaction in, as by heat.5. Physics To make (a substance) radioactive.6. Biology To convert (a molecule or cell) into a form that carries out a specific action: activate an enzyme; activate B cells.
ac′ti·va′tion n.ac′ti·va′tor n.activationOrder to active duty (other than for training) in the Federal service. See also active duty; federal service.Thesaurus| Noun | 1. |  activation - stimulation of activity in an organism or chemicalindweller - activation by an inner spirit or force or principle; "the Holy Spirit is the indweller of the church and its members"stimulation - (physiology) the effect of a stimulus (on nerves or organs etc.)inactivation - the process of rendering inactive; "the gene inactivation system"; "thermal inactivation of serum samples" | | 2. |  activation - the activity of causing to have energy and be activeactivating, energizingactivity - any specific behavior; "they avoided all recreational activity"electrification - the activity of thrilling or markedly exciting some person or groupinvigoration, vivification, animation - the activity of giving vitality and vigour to something | | 3. |  activation - making active and effective (as a bomb)commencement, start, beginning - the act of starting something; "he was responsible for the beginning of negotiations"defusing, deactivation - the act of deactivating or making ineffective (as a bomb) |
activationnoun start, triggering, turning on, switching on, animation, arousal, initiation, mobilization, setting in motion, actuation A computer controls the activation of an airbag.Translationsactivation
activation[‚ak·tə′vā·shən] (chemistry) Treatment of a substance by heat, radiation, or activating reagent to produce a more complete or rapid chemical or physical change. (electricity) The process of adding liquid to a manufactured cell or battery to make it operative. (electronics) The process of treating the cathode or target of an electron tube to increase its emission. Also known as sensitization. (metallurgy) A process of facilitating the separation and collection of ore powders by the use of substances which change the response of the particle surfaces to a flotation fluid. A process that increases the rate of pressing and heating a metal powder into cohesion. (cell and molecular biology) A change that is induced in an amino acid before it is utilized for protein synthesis. (nucleonics) The process of inducing radioactivity by bombardment with neutrons or with other types of radiation. (physiology) The designation for all changes in the ovum during fertilization, from sperm contact to the dissolution of nuclear membranes. activation
ac·ti·va·tion (ak'ti-vā'shŭn), 1. The act of rendering active. 2. An increase in the energy content of an atom or molecule, effected by means such as increased temperature or absorption of light photons that renders that atom or molecule more reactive. 3. Techniques of stimulating the brain by light, sound, electricity, or chemical agents, to elicit abnormal activity in the electroencephalogram. 4. Stimulation of peripheral nerve fibers to the point that action potentials are initiated. 5. Stimulation of cell division in an oocyte by fertilization or by artificial means. 6. The act of making radioactive.
See also: cross-section.activation The enabling of an eClinical trial system to capture data.
Activation Biochemistry The conversion, often enzymatic, of a molecule to a functionally active form—e.g., activation of complement or coagulation cascades.
Haematology See Plasminogen activation
Immunology See Complement activation, Lymphocyte activation, Macrophage activation, T cell activation
Molecular biology See Dark reactivation, Ras activation, Transactivation
Neurology The stimulation of a nerve to a level high enough to kick over its action potential.
NIHspeak The decision by a group or institution to open an investigational new drug (IND) study.
Nuclear medicine Radioactivation. The interaction of a particle with an atomic nucleus, which “kicks” the nucleus into an unstable, high energy state, causing it to become radioactive.activation Hematology See Plasminogen activation Immunology Lymphocyte activation, see there. See Complement activation, Macrophage activation Neurology The stimulation of a nerve to a level high enough to kick over its action potential. ac·ti·va·tion (ak'ti-vā'shŭn) 1. The act of rendering active. 2. An increase in the energy content of an atom or molecule, through the raising of temperature, absorption of photons, or other means. 3. Techniques of stimulating the brain by light, sound, electricity, or chemical agents, to elicit abnormal activity in the electroencephalogram. 4. Stimulation of peripheral nerve fibers to the point that action potentials are initiated. 5. Stimulation of cell division in an oocyte by fertilization or by artificial means. 6. The act of making radioactive. ac·ti·va·tion (ak'ti-vā'shŭn) 1. Act of rendering active. 2. Act of making something radioactive. Patient discussion about activationQ. Are there any nice activities for adults with autism? I've been helping a very nice man of 45 of years old and I'm looking for some new things I can do with him in our time together. any ideas?A. Autistic people react wonderfully with animals. for instance- i saw a group of severe Autistic teenagers going to swim with dolphins. the effect was amazing! taking him to the zoo, or even to the park to feed ducks, pet dogs, whatever.. could have a great effect on him.
hope i helped!
tell me how it went. Q. what is a passive smoking? and is it dangerous as an active? A. Passive smoking is the exposure to cigarettes smoke emitted from cigarettes smoke by other person. It's dangerous and may increase the risk to several diseases similar to active smoking (one's exposure to smoke emitted from the cigarettes he or she is smoking) although the risk is of lower magnitude. Example for passive smoking is children of smokers etc.
You may read more here:http://www.nlm.nih.gov/medlineplus/secondhandsmoke.html
Q. i swim a lot ! what are the advantages of swimming over other sport activities? on what part of the body does it work the most ?A. its a good workout but your not really going to burn as much calories as a regular work out. More discussions about activationAcronymsSeeactualactivation
Synonyms for activationnoun startSynonyms- start
- triggering
- turning on
- switching on
- animation
- arousal
- initiation
- mobilization
- setting in motion
- actuation
Synonyms for activationnoun stimulation of activity in an organism or chemicalRelated WordsAntonymsnoun the activity of causing to have energy and be activeSynonymsRelated Words- activity
- electrification
- invigoration
- vivification
- animation
noun making active and effective (as a bomb)Related Words- commencement
- start
- beginning
Antonyms |