activity

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activity

 [ak-tiv´ĭ-te]
1. the quality or process of exerting energy or of accomplishing an effect.
2. a thermodynamic quantity that represents the effective concentration of a solute in a non-ideal solution. Symbol a.
3. the number of disintegrations per unit of a radioactive material. Symbol A.
4. the presence of recordable electrical energy in a nerve or muscle.
a's of daily living (ADL) activities that are necessary for daily care of oneself and independent community living. It includes using the toilet and grooming, dressing, and feeding oneself; independent community living includes driving, shopping, homemaking, care of family, work activities, and so on. See also self care, self care deficit, and self care assistance.(See accompanying table.)
deficient diversional activity a nursing diagnosis approved by the North American Nursing Diagnosis Association, defined as the experiencing by an individual of decreased stimulation from, interest in, or engagement in recreational or leisure activities. Formerly called diversional activity deficit. Possible causes include prolonged hospitalization or immobility at home, frequent and lengthy treatments such as renal dialysis, and a monotonous, nonstimulating environment. The patient usually gives subjective evidence that this condition exists by verbalizing a feeling of boredom or stating a desire for something to do or gives objective evidence by acting depressed or restless.

Nursing interventions that could be appropriate for diversional activity deficit include interviewing the patient to assess the current situation and to assist in developing plans for activities that provide interest and stimulation. These activities could include music, games, reading, handwork, or any other pastimes enjoyed by the patient. Patients may need assistance in identifying available resources and motivation to take advantage of the activities they provide.
enzyme activity the catalytic effect exerted by an enzyme, expressed as units per milligram of enzyme (specific activity) or molecules of substrate transformed per minute per molecule of enzyme (molecular activity).
malignant ventricular ectopic activity ventricular fibrillation or ventricular tachycardia with syncope, heart failure, myocardial ischemia, or hypotension.
optical activity the ability of a chemical compound to rotate the plane of polarization of plane-polarized light.
physical activity bodily movements, such as those accompanying activities of daily living.
pulseless electrical activity (PEA) continued electrical rhythmicity of the heart in the absence of effective mechanical function; it may be due to uncoupling of ventricular muscle contraction from electrical activity or may be secondary to cardiac damage with respiratory failure and cessation of cardiac venous return. Called also electromechanical dissociation.
purposeful activity in occupational therapy, tasks or experiences in which the individual actively participates that require and elicit coordination between the sensory, motor, cognitive, and psychological systems. Each person has a unique set of purposeful activities, influenced by his or her life roles, and, when doing one of them, directs attention to the task itself rather than to the internal processes involved. Activities may yield immediate results or may require sustained effort and repetition, and they may either represent new responses or be part of complex, longstanding patterns of behavior.
sustained rhythmic activity the continuous generation of action potentials within the heart in the absence of artificial or external stimulation.
triggered activity activity in which nondriven action potentials arise from afterpotentials that were caused by the previous action potential.

ac·tiv·i·ty (a),

(ak-tiv'i-tē),
1. electroencephalography The presence of neurogenic electrical energy.
See also: radioactivity.
2. physical chemistry an ideal concentration for which the law of mass action will apply perfectly; the ratio of the activity to the true concentration is the activity coefficient (γ), which becomes 1.00 at infinite dilution.
See also: radioactivity.
3. For enzymes, the amount of substrate consumed (or product formed) in a given time under given conditions; turnover number.
See also: radioactivity.
4. The number of nuclear transformations (disintegrations) in a given quantity of a material per unit time. Units: curie (Ci), millicurie (mCi), becquerel (Bq), megabecquerel (MBq).
See also: radioactivity.

activity

/ac·tiv·i·ty/ (ak-tiv´ĭ-te)
1. the quality or process of exerting energy or of accomplishing an effect.
2. a thermodynamic quantity that represents the effective concentration of a solute in a nonideal solution. Symbol .
3. the number of disintegrations per unit time of a radioactive material. Symbol .
4. the presence of recordable electrical energy in a muscle or nerve (electrical a.).

end-plate activity  spontaneous activity recorded close to motor end plates in normal muscle.
enzyme activity  the catalytic effect exerted by an enzyme, expressed as units per milligram of enzyme (specific a.) or as molecules of substrate transformed per minute per molecule of enzyme (molecular a.) .
intrinsic sympathomimetic activity  (ISA) the ability of a β-blocker to stimulate β-adrenergic receptors weakly during β-blockade.
optical activity  the ability of a chemical compound to rotate the plane of polarization of plane-polarized light.

activity

1 any action or task completed.
2 the action of an enzyme on an amount of substrate that is converted to product per unit of time under defined conditions.

Activity

The ability to produce some effect; the extent or intensity of a function or action.
Cardiology Body movement which affects metabolic demand and pacing rate.
Cell biology See Mitotic activity
Chemistry A thermodynamic value which corresponds to the effective concentration of a solute in a non-ideal solution. If concentrations are replaced by activities, the equations for equilibrium constants, electrode potentials, osmotic pressure, boiling point elevation, freezing point depression and vapour pressures of volatile solutes are converted from approximations that hold only for dilute solutions to exact equations that hold for all concentrations. Activity is equal to the product of the concentration and the activity coefficient, a dimensionless number measuring deviation from nonideality.
Developmental biology See Spätzle activity
Endocrinology The functional effect of a hormone or hormone-like substance.
Epidemiology See Surveillance activity
MedspeakUK The level of medical work carried out by a doctor or other care professional in a given period in the UK—e.g., the number of patients seen in a particular time frame.
Neurology See Cognitively demanding leisure activity
Nuclear medicine The number of nuclear disintegrations—decay events—or transformations in a radioactive material per unit of time—which is a measure of the amount of source material.
Optics Optical activity, see there
Research See Grant-approved activity
Sexology Sexuoerotic rubbing of ano- or orogenital mucosae
Vox populi Doing stuff.

activity

The ability to produce some effect; the extent or intensity of a function or action Cardiac pacing Body movement which affects metabolic demand and pacing rate Endocrinology The functional effect of a hormone or hormone-like substance. See HCG-like activity, Melanoma growth stimulatory activity, NSILA, Plasma renin activity Epidemiology See Surveillance activity Sexology Sexuoerotic rubbing of orogenital mucosae. See Safe sexual activity, Sexual activity Vox populi Doing stuff. See Hyperactivity, Instrumental activities of daily living activity, Major life activity, Physical activity.

ac·tiv·i·ty

(ak-tiv'i-tē)
1. electroencephalography The presence of neurogenic electrical energy.
2. physical chemistry An ideal concentration for which the law of mass action will apply perfectly; the ratio of the activity to the true concentration is the activity coefficient (γ), which becomes 1.00 at infinite dilution.
3. For enzymes, the amount of substrate consumed (or product formed) in a given time under given conditions; turnover number
4. The number of nuclear transformations (disintegrations) in a given quantity of a material per unit time. Units: curie (Ci), millicurie (mCi), becquerel (Bq), megabecquerel (MBq).
See also: radioactivity
5. Producing movement.
6. A class of goal-directed human actions.
See also: physical activity

activity

the ability of a substance to react with another.

activity,

n 1. the modification brought about by a remedy in a living organism.
2. the ability of a medicine to bring about modification in a living organism. See also drug action, reactivity, and receptivity.

ac·tiv·i·ty

(ak-tiv'i-tē)
1. electroencephalography the presence of neurogenic electrical energy.
2. physical chemistry an ideal concentration for which the law of mass action will apply perfectly; the ratio of the activity to the true concentration is the activity coefficient (γ), which becomes 1.00 at infinite dilution.
3. For enzymes, the amount of substrate consumed (or product formed) in a given time under given conditions; turnover number.
4. The number of nuclear transformations (disintegrations) in a given quantity of a material per unit time. Units: curie (Ci), millicurie (mCi), becquerel (Bq), megabecquerel (MBq).

activity

the quality or process of releasing energy or of accomplishing an effect.

displacement activity
an instinctive behavior pattern, exhibited out of context and believed to be a means of relieving tension in the animal. Usually performed when the animal is in a state of high arousal or when it is frustrated in the performance of some instinctive activity. Seen as sexual mounting, digging, tail chasing, or excessive grooming in cats.
economic activity
a method of producing a specific product, e.g. fine wool, white veal.
enzyme activity
the catalytic effect exerted by an enzyme, expressed as units per milligram of enzyme (specific activity) or molecules of substrate transformed per minute per molecule of enzyme (molecular activity).
activity gross income
the total value of production, rather than the income, for a particular activity.
activity gross margin
the gross income of an activity less its variable costs.
intermediate activity
production of a commodity which is not sold but is used as an input to some other enterprise, e.g. crop used on the farm as stock feed.
optical activity
the ability of a chemical compound to rotate the plane of polarization of plane-polarized light.

Patient discussion about activity

Q. 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 activity