activity (redirected from activities)

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.).

5. optical a.

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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.

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ac·tiv·i·ty (k-tv-t)

n.

1. A physiological process.

2. The presence of neurogenic electrical energy in electroencephalography.

3. An ideal concentration for which the law of mass action will apply perfectly.

4. The intensity of a radioactive source.

5. The ability to take part in a chemical reaction.

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activity,

the action of an enzyme on an amount of substrate that is converted to product per unit of time under defined conditions.

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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.

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activity

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

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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.

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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.

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Patient discussion about activities.

Q. My son who is 4yrs old is so hyper-active. How do I find out if my son has ADHD or ADD? My son who is 4yrs old is so hyper-active that he climbs on everything and jumps off everything to. I cannot prevent that. I have also punished him. He cries for a split moment and then he just goes back to doing the same thing. I've tried every type of punishment that I could think of. I'm afraid of him. What can I do? How do I find out if my son has ADHD or ADD?

A. I agree complete physical and psycho analysis to rule out any underlying cause. But young children often act out characters; you could ask him why he's doing this and give plenty of proper oportunities to do so. Example when he climbs on and jumps off the furniture ask him what he is doing. He may be pretending to be something or someone. If so ask him where "so and So" does their jumping and ask or remind him what the funiture is for. explain how to properly use it have him demonstrate. Example: " What is a chair for or how do we use a chair? (sitting) "Where" (on the seat, child may touch the seat and answer here) "show me how" (child sits on seat of chair). Praise the positive behavior smiling and then suggest that he can play "so an So" somewhere else at another time: for instance if possible take him out to the playground or in a safe area lie a firm suitcase or other boxlike item on its side, cover with a soft quilt and supervise his c

Q. How does drinking a lot of water before an activity helps to avoid dehydration? Question Description It just makes me go to the bathroom more…

A. you need to drink water before,during and after any sports or exercises,because you sweat which causes dehydration.

Q. why do i have problems with my right hip?i am 38 and i've been working out alot since jan of 92.why the hip? i am very physically active.i am 38.not overweight at all.i am 5-9 and a half and i weigh 180-185 lbs.i have problems with my right hip.hard to exactly explain how it does it's thing on me.i got back into practicing karate kicks in 98 after a 7 year hiatus.i ride my bicycle alot and i do dips,pullups,and moderate level weight lifting.i think maybe its the bicycle sprints that i like to incorporate in my bicycling.what do you's think...?

A. i do not get tingling or burning.i never suffered trauma to the hip.
i do not have pain during the night.only if i stood up all of a sudden right on the bed after laying there for hours would it possibly act up.
during my regular waken hours,if i sit for a prolonged period of time and then go to get up too soon or too quick,i will get the pain.it just always feels like i badly pulled something,or it temporarily went out of place.then i cease further movement for around 10 seconds and sort of let it settle back into place and i do this sort of hip rotational thing to help loosen the area and then,i'm usually good for awhile after that.i havent been to a doctor or orthopedic surgeon because i know how many doctors can be and they might try to convince me that i absolutely have to get surgery or i'll be crippled in a few years.i know how docs like to use scare tactics alot of times and do surgeries that the patient didnt really have to get to begin with.i'm leary about docs in general.