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Given the frequent association of RES with migraine, Raieli et al. proposed that symptoms of migraine-associated RES may be due to the trigeminovascular activation during migraine attacks producing extracerebral vasodilatation via direct release of vasodilator substances (substance P, CGRP and nitric oxide) [5].
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Hormones and other vasoactive substances (substances that relax or contract the blood vessels) have a direct effect on blood pressure, but the interaction of these factors remains unclear.
Aldehyde condensation polymer, any of a number of industrially produced polymeric substances (substances composed of extremely large molecules) that are built up in condensation reactions involving an aldehyde.
The Synthetic Drug Control Act of 2015 contains a 28-page laundry list of more than 300 Schedule 1 substances – substances that are illegal in all settings and have high potential for abuse – to be added to the list of federally controlled substances.
Like substance, quantity seems like a reasonable candidate for a highest kind — quantities exist; quantities are not substances; substances are not quantities; and it is not clear what kind would stand above quantity.
"No substance," writes Mr. O'Brien in 1939," is of importance in fiction unless it is organic substance, substance in which the pulse of life is beating.
And while it's nice to speak politely about sensitive matters, given the choice between tone and substance, substance should always win.
For a new flavouring substance (substance not listed on the permitted list of food additives for use), the approval process follows the same process as a food additive (see "Direct food additives" above).
MicroR meters also give an audible click when it detects radiation, making it useful to point out the direction of a radioactive substance substance.
Table 1 Hjelmslev's form/substance and content/expression complementarities Content Expression Form content form expression form Substance content substance expression substance Figure 4 Levels of language (from Halliday 1961 /2002: 39).
Substance of communion, substance of need.
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CEO of Professional Science Editing for Scientists @ prosciediting.com