blocking


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blocking

 [blok´ing]
1. interruption of an afferent nerve pathway (see block).
2. inhibition of an intracellular biosynthetic process; metabolic block.
3. thought blocking or thought deprivation; sudden cessation of the train of thought or speech, such as may occur in a period of extreme emotion or when a repressed painful thought is approached.
4. casting of tissue blocks in an embedding medium such as paraffin wax so that sections can be cut with a microtome.

block·ing

(blok'ing),
1. Obstructing; arresting passage, conduction, or transmission.
2. In psychoanalysis, a sudden break in free association occurring when a painful subject or repressed complex is touched.
3. Sudden cessation of thoughts and speech, which may indicate the presence of a severe thought disorder or a psychosis.

blocking

Histology
The use of a chemical—acetylation, methylation, saponification or immunologic—digestion with hyaluronidase or sialidase method to prevent nonspecific binding of unwanted substances in a reaction.
 
Immunology
The reduction or elimination of nonspecific binding of an antibody to an epitope, which is accomplished by washing a specimen with the serum of a mammal other than one used in the assay system; blocking is the first step in ELISA.

Neurology
A phenomenon seen in neuromuscular junction disease (e.g., myasthenia gravis), where in testing of 2 single muscle fibres for jitter, one may intermittently fail to fire due to a failure of impulse conduction.
 
Psychiatry
An abrupt cessation of thoughts and mental activity or spontaneous flow of thinking or speaking, perceived as an absence or deprivation of thought.
 
Conditions causing
Organic brain disease, schizophrenia.

blocking

Clinical trials The process of establishing defined groups, as in a treatment schedule designed to ensure a specific allocation ratio

block·ing

(blok'ing)
1. Obstructing; arresting passage, conduction, or transmission.
2. In psychoanalysis, a sudden break in free association occurring when a painful subject or repressed complex is touched.
3. Sudden cessation of thoughts and speech, which may indicate the presence of a severe thought disorder or a psychosis.

blocking

1. The injection of a local anaesthetic around a nerve to prevent the passage of sensory impulses.
2. Involuntary interruption of a train of thought by emotional upset or psychotic disorder.

blocking 

The mounting of one or a number of lens blanks on a holder to form a unit (termed a 'block') ready for surfacing. The lens blanks are cemented with pitch, wax, etc. See surfacing.

block·ing

(blok'ing)
Obstructing; arresting passage, conduction, or transmission.

Patient discussion about blocking

Q. what does a sun block cream do? and what are a UV rays?

A. It blocks out harmful Ultra violet rays from the skin as the previous entries have related; however it can also block your ability to produce vitamin D. If you live in a northerly area or one that receives limited sunlight, its recommended to get at least 15 minutes of sun a day (this is probably best done with minimal sunblock) and according to personnal sun sensitivity. Another thing to keep in mind is that sunblock works best if applied 20 minutes before sun exposure.

Q. my son is 5 and half yrs old.he is having veezing and 75%block in one nose because of adenod.is is curable he has taken steriods for one and half yrs but with not much relief for veezing. then we switched on to ayur medicines,where he had some pigmentation at some places in his body. so again we are back to allopathy. he has one nasal steriod spray now with few other medicines. in his last test, dr, said he has adenod about 75% blcok in one nose, he has prescribed medicines for one month. he has also said that a small surgery can be done to remove adenod. i would like to know how long this surgry wil take and how much of rest he wil have to take. and if this adenod is removed, wil his other problem like veezing be cured? indira rajesh

A. it's a pretty common surgery from what i remember. most of our family has any kind of nasal problem...sinusitis..adenoids...just name it. the surgery is entering through the mouth (under full sedation) and lasering/curetting - removed. it took about a week to recover , eating soft foods..and it worked!

More discussions about blocking
References in periodicals archive ?
After blocking, stitches are smoother, eyelets are more open, and shape is more uniform.
The blocking methods are listed from gentlest to most effective.
Misting is a wonderful place to start when blocking your first piece, but sometimes a light mist of water is not enough encouragement to keep your lacework open once it is dry.
Blockers can be grouped by position and located on the court where block practice is desired (e.g., right side blocker near right antenna blocking outside sets).
Remember, the tackle is working in a free blocking zone, and he is allowed to clip any defender in the B gap.
If the force man crashes down tight enough to prevent the lead back from kicking him out, the lead back should seal him by blocking his outside hip with his inside shoulder.
When the play is run to a tight slot set and the defense is playing a Cover 2 look with the cornerback forcing, the lead back will lead the alley on the play because the split end will now have the responsibility of blocking the force.
Since a 1:1 blocking ratio is not available, the QB fakes to the X, hands off to the running back, then executes the play action.
Defeating a Cut Block (for a LB and DB): As you attack the man blocking you, read his head.
However, the real reason that the power attack is so successful is the triad blocking technique shown in Diag.
Remember, the gap always has priority in all blocking rules.
Triad blocking affords the simplicity of having all three linemen on the same page knowing what to do rather than wondering who to block.