substitution


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substitution

 [sub″stĭ-too´shun]
the act of putting one thing in the place of another, such as the chemical replacement of one atom or substituent group by another. Called also replacement.
a defense mechanism in which an individual replaces an unattainable or unacceptable goal, emotion, or motive with one that is attainable or acceptable.

sub·sti·tu·tion

(sŭb'sti-tū'shŭn),
1. In chemistry, replacement of an atom or group in a compound by another atom or group (for example, substitution of H by Cl in CH4 to give CH3Cl).
2. In psychoanalysis, an unconscious defense mechanism by which an unacceptable or unattainable goal, object, or emotion is replaced by one that is more acceptable or attainable; the process is more acute and direct, and less subtle, than sublimation.
[L. substitutio, to put in place of another]

substitution

/sub·sti·tu·tion/ (sub″stĭ-too´shun)
1. the act of putting one thing in place of another, especially the chemical replacement of one atom or radical by another.
2. a defense mechanism, operating unconsciously, in which an unattainable or unacceptable goal, emotion, or object is replaced by one that is attainable or acceptable.

substitution

[-stit(y)o̅o̅′shən]
a mental defense mechanism, operating unconsciously, by which an unattainable or unacceptable goal, emotion, or object is replaced by one that is more attainable or acceptable.

substitution

Psychiatry An unconscious defense mechanism through which an unattainable or unacceptable goal, emotion, or object is replaced by one that is more attainable or acceptable. See Ego defense mechanism.

sub·sti·tu·tion

(sŭb'sti-tū'shŭn)
1. chemistry The replacement of an atom or group in a compound by another atom or group.
2. psychoanalysis An unconscious defense mechanism by which an unacceptable or unattainable goal, object, or emotion is replaced by one that is more acceptable or attainable; the process is more acute and direct, and less subtle, than sublimation.
[L. substitutio, to put in place of another]

substitution

  1. a reaction in which an atom or group of atoms is removed and replaced by another atom or group.
  2. the replacement of one amino acid by another.
  3. the replacement of one base by another in a nucleotide or nucleic acid.

substitution

replacement of an atom/group within a compound by another atom/group, e.g. silver nitrate action is quenched by the addition of salt (nitrate ion is substituted by chloride ion to form sliver chloride, i.e. AgNO3 + NaCl → AgCl + Na NO3)

sub·sti·tu·tion

(sŭb'sti-tū'shŭn)
chemistry the replacement of an atom or group in a com pound by another atom or group.
[L. substitutio, to put in place of another]

substitution,

n a standard or nonstandard speech sound used for another consonant speech sound (e.g.,
w for
l wady for
lady]).

substitution

the act of putting one thing in the place of another, especially the chemical replacement of one atom or substituent group by another.

conservative substitution
in protein chemistry, one amino acid is substituted by another which has a similar polarity.
meat substitution
a common fraud in the meat industry in which uninspected meat is substituted for meat that has undergone inspection and been branded as satisfactory. The other not infrequent fraud is the substitution of meat of another species, e.g. horse for beef, cat for chicken or rabbit.
non-conservative substitution
in protein chemistry, one amino acid is substituted by another which has a markedly different polarity.

Patient discussion about substitution

Q. Do people substitute one addiction with another? If someone used to be addicted to alcohol and drugs, but is now clean for several months, is it likely that he will develop an addiction to something else (for example cigarettes or gambling)?

A. I'd just like to add my 2 cents worth: Addictive behavior transfers to just about anything; addiction is the problem. Just as addicts have to learn that alcohol is also a drug, we must recognize that addiction is the problem; it is the behavior that is the problem. A common thing for addicts to do is to stop using drugs (including alcohol) and to substitute with people instead, for example, to become involved in codependent relationships with others, or to recognize that their ongoing relationships may also be codependent. It's not uncommon for individuals to go to CoDA (Codependents Anonymous) in addition to AA/NA or GA(Gambler's Anonymous), MA (Marijuana Anonymous)...Others find it more beneficial to use one program (like NA, e.g.), while realizing that addiction refers to more than just a drug or substance.

Q. Any suggestions for coping with asthma in 5 year old? My daughter has asthma. It comes on when she has a cold or an ear or throat infection. I had to give her a liquid steroid last night as she had asthma really badly, the trouble is the steroid makes her so hyper-active, jumping off lounges and running around etc. It drives me crazy because she really needs to rest. I have seen specialists and this is what they all prescribe. What sort of medications do you give your asthmatic child? Are there any new developments I'm not aware of? I would really like some natural remedies if there is any, or diet tips.

A. hi whiteh,i am a retired respiratory therapist,depending on how bad your child is with her attacks will determine what types of meds work for her steroids are given for bad asthma an it might be the only thing that works good for her,her dr knows best.if your child has a regular dr. get a pulmonary specialist for her.----also steroids should NOT BE STOPPED right AWAY if your child has been on high doses this can cause her to have a bad attack.---mrfoot56

More discussions about substitution
References in periodicals archive ?
Since the goal of this study is to provide estimates of substitution over time across various types of alcohol using a current data set, the Euromonitor Global Market Information Database is used because this gives a fairly large sample.
3% of infants born to mothers in the illicit opioid/opioid substitution therapy group.
The Comelec body also expressed apprehension that since the process of substitution has been brought to the spotlight, politicians seeking office in the 2019 elections might abuse it.
SUBSTITUTION 70 mins: Albert Adomah replaces Carlos de Pena GOAl 71 mins: Boro are level and it's out of nowhere, with Fabbrini drilling home from just outside the box.
Under mild conditions on the substitution rule, any two tilings that arise from it will be repetitive and locally indistinguishable from one another, meaning that any bounded patch that appears in one of them also appears in the other.
The substitution [phi] is primitive if there is an integer k for which, given any ordered pair [p.
MrBayes 3 (32) was used to build the Bayesian MCMC tree using GTR+G as the nucleotide substitution model with 800,000 generations, sampling frequency as 100 and 25% of the generations as burn-in.
In his PhD thesis, Dr Al Ameri asserted that many healthcare providers in the world have been promoting drug substitution in an attempt to contain their costs, under the presumption that generic drugs are not inferior to the more expensive branded medicines, "and the premise that any saving that does not compromise the quality of care is essentially appropriate.
Amid economic downturn and export decline, the pushing of import substitution can enhance domestic technologies and provide the domestic market as the testing ground for domestic technologies, in preparation for next round of export expansion.
The third article, by Jason Fletcher of the Yale School of Public Health, closely examines the data on substitution effects from soda taxes.
asserts that states can save more than $100 million for their Medicaid programs over the next several years by changing laws to make substitution of generic drugs easier and faster.