Inhibitor

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inhibitor

[in′hib·əd·ər]
(aerospace engineering)
A substance bonded, taped, or dip-dried onto a solid propellant to restrict the burning surface and to give direction to the burning process.
(chemistry)
A substance which is capable of stopping or retarding a chemical reaction; to be technically useful, it must be effective in low concentration.

Inhibitor

 

a circuit having m + n inputs and a single output, at which a signal can appear only when there are no signals on the m inputs (inhibiting). The other n inputs (principal) form one of the two logic connections, “AND” or “OR.” Inhibitors are used extensively in computers. They are very often understood to be a circuit having a single principal input and a single inhibiting input. A signal appears at the output of such a circuit when a signal is present on the principal input but there is none on the inhibiting input. Such an inhibitor is called an anticoincidence gate; its conventional representation is given in Figure 1.

Figure 1. Block diagram of an anticoincidence gate (inhibitor) with m — 1 and n 1:(A) principal input, (Q) inhibiting input, (Ga) anticoincidence gate

inhibitor

A substance added to paint to retard drying, skinning, mildew growth, etc. Also see corrosion inhibitor, inhibiting pigment, drying inhibitor.
References in periodicals archive ?
Side effects of aromatase inhibitors resemble those of tamoxifen side effects19 which include vasodilatation, sweating, obesity, dryness of vaginal mucosa, vulvovaginitis, leucorrhea, urinary tract infection, osteoporosis, osteopenia, arthritis and arthralgia, bone pain, pharyngitis, paraesthesia, anxiety, depression, reduced intellectual function, mood swings, headache, rash, hypertension, insomnia, back pain, lymphoedema, peripheral edema, cold sweats, dizziness, gastrointestinal disorders like nausea, dyspepsia, abdominal pain, constipation, diarrhea, asthenia, fracture, hypercholesteremia, infections, dyspnea, coughing, chest pain, flu syndrome20.
An aromatase inhibitor or high water temperature induce oocyte apoptosis and depletion of P450 aromatase activity in the gonads of genetic female zebrash during sex-reversal.
Aromatase inhibitors for female infertility: a systematic review of the literature.
niloticus) by dietary administration of an aromatase inhibitor during sexual differentiation.
Treatment with an aromatase inhibitor suppresses high-temperature feminization of genetic male (YY) Nile tilapia.
She was offered to start hormonal treatment by Anastrozole (aromatase inhibitor), in April 2008, but she did not agree.
A randomised trial comparing two doses of the new selective aromatase inhibitor anastrozole (Arimidex) with megestrol acetate in postmenopausal patients with advanced breast cancer.
The results suggest that taking an aromatase inhibitor such as exemestane reduces a woman's risk of developing invasive breast cancer by 65 percent, says study coauthor Paul Goss, a physician at Harvard Medical School in Boston.
Aromatase inhibitors reduce the amount of estrogen in the body by blocking the enzyme aromatase, which turns androgen into estrogen.
Adjuvant aromatase inhibitor (AI) therapy, administered either alone for 5 years or sequentially with adjuvant tamoxifen, improves disease-free survival in postmenopausal women with endocrine-responsive breast cancer when compared with tamoxifen alone [2-5].
The authors report dose-dependent inhibitory effects of BPA on [E.sub.2] secretion and on expression of insulin-like growth factor 1 (IGF-1), steroidogenic factor-1 (SF-1), GATA4, and aromatase in response to FSH, and dose-dependent up-regulation of peroxisome proliferator activated receptor-[gamma] (PPAR[gamma]), an aromatase inhibitor. In addition they report that effects of PPAR[gamma] overexpression (in KGN cells transfected with a PPAR[gamma]-containing vector) were consistent with effects of BPA, and that BPA appeared to reduce DNA synthesis in granulosa cells without inducing apoptosis.