(a.) Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour-tempered.
(a.) Of or pertaining to an acid; as, acid reaction.
(n.) A sour substance.
(n.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.
Example Sentences:
(1) The amino acid sequence deduced from the nucleotide sequence contained both amino- and carboxyl-terminal sequences.
(2) F(420) is photolabile aerobically in neutral and basic solutions, whereas the acid-stable chromophore is not photolabile under these conditions.
(3) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
(4) If ascorbic acid was omitted from the culture medium, the extensive new connective tissue matrix was not produced.
(5) The interaction of the antibody with both the bacterial and the tissue derived polysialic acids suggests that the conformational epitope critical for the interaction is formed by both classes of compounds.
(6) Arachidic acid was without effect, while linoleic acid and linolenic acid were (on a concentration basis) at least 5-times less active than arachidonic acid.
(7) An unsaturated fatty acid auxotroph of Escherichia coli was grown with a series of cis-octadecenoate isomers in which the location of the double bond varied from positions 3 to 17.
(8) The ability of azelastine to influence antigen-induced contractile responses (Schultz-Dale phenomenon) in isolated tracheal segments of the guinea-pig was investigated and compared with selected antiallergic drugs and inhibitors of arachidonic acid metabolism.
(9) After 4 to 6 hours of recirculation, accumulation of vasoactive amine, 5-hydroxytryptamine, its major metabolite, 5-hydroxyindole acetic acid, and its precursor amino acid, tryptophan were detected.
(10) Spectrophotometric determination of the sulfhydryl content in the animal tissue before (control) and after using 6,6'-Dithiodinicotinic acid is applied.
(11) This death is also dependent on the presence of chloride and is prevented with the non-selective EAA antagonist, kynurenic acid, but is not prevented by QA.
(12) However, four of ten young adult outer arm (relatively sun-exposed) and one of ten young adult inner arm (relatively sun-protected) fibroblasts lines increased their saturation density in response to retinoic acid.
(13) Microionophoretically applied excitatory amino acids induced firing of extracellularly recorded single units in a tissue slice preparation of the mouse cochlear nucleus, and the similarly applied antagonist 2-amino-5-phosphonovalerate (2APV) was demonstrated to be a selective N-methyl-D-aspartate (NMDA) receptor antagonist.
(14) The LD50 of the following metal-binding chelating drugs, EDTA, diethylenetriaminepentaacetic acid (DTPA), hydroxyethylenediaminetriacetic acid (HEDTA), cyclohexanediaminotetraacetic acid (CDTA) and triethylenetetraminehexaacetic acid (TTHA) was evaluated in terms of mortality in rats after intraperitoneal administration and was found to be in the order: CDTA greater than EDTA greater than DTPA greater than TTHA greater than HEDTA.
(15) Estimations of the degree of incorporation of 14C from the radioactive labeled carbohydrate into the glycerol and fatty acid moieties were carried out.
(16) The second amino acid residue influences not only the rate of reaction but also the extent of formation of the product of the Amadori rearrangement, the ketoamine.
(17) Leumorphin is a 29-amino-acid peptide derived from preproenkephalin B. Intracerebroventricular (i.c.v.)
(18) Hepatic lymph flow increased only after ethacrynic acid and mannitol administration.
(19) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
(20) A phytochemical investigation of an ethanolic extract of the whole plant of Echites hirsuta (Apocynaceae) resulted in the isolation and identification of the flavonoids naringenin, aromadendrin (dihydrokaempferol), and kaempferol; the coumarin fraxetin; the triterpene ursolic acid; and the sterol glycoside sitosteryl glucoside.
Reparation
Definition:
(n.) The act of renewing, restoring, etc., or the state of being renewed or repaired; as, the reparation of a bridge or of a highway; -- in this sense, repair is oftener used.
(n.) The act of making amends or giving satisfaction or compensation for a wrong, injury, etc.; also, the thing done or given; amends; satisfaction; indemnity.
Example Sentences:
(1) A polypotent mechanism of the stimulating effect of fibronectin instillations during all the stages of the reparative process in the corneal tissue was proved.
(2) These observations provide biochemical support for the hypothesis that the reparative process of injured tissue in the fetal rabbit proceeds in an attempt to reconstitute normality, i.e.
(3) It is thought that the mechanisms of resorption are: co-mingling with CSF and redistribution in the more acute variety and in instances of subdural hydromas; and thru the healing and reparative process in the chronic type.
(4) The formation of cavity is followed by asymmetrical segment demyelination and reparative hyperplasia of the astroglial cells and gliosis of the cavity walls.
(5) The kinetic and fine structural characteristics and site of origin of the resurfacing uterine lining, as well as the influence of ovarian hormonal stimuli on the reparative processes of experimentally injured endometrium in the rabbit, were studied by means of in vivo historadioautography and electron microscopy.
(6) Hence, reaction of chemical carcinogen with nuclear DNA is possible only when the cell is overwhelmed leading to cell death, or following a temporary breach of the nuclear membrane control points, but the DNA damage in the latter is totally reparable.
(7) Since the contraction of the wound in experimental animals was also more rapid (activization from the 3rd day), a conclusion can be made of the stimulating influence of LP on the course of the reparative regeneration of the epidermis observed as long as 1.5 weeks after a single injection of LP.
(8) After 4 days of treatment, the active-treated wounds had already reached the reparative phase, whereas the vehicle-treated wounds were still in the proliferative phase.
(9) If the villagers fail to respect the social code, by not using her new name or by reminding her of her indignity, they have to perform a reparative ritual, at which a goat is sacrificed.
(10) The modulative effect of the methods of general and local sorptive detoxication on the development of inflammatory reaction of the area of thermal trauma with reduction of damaging effect of proteolytic enzymes and formation of cellular reaction directed at protection from microorganisms and beginning of the proliferative stage of reparative regeneration is shown.
(11) Review of the FNA smears showed the findings to be more typical of a reparative or regenerative process; these findings had been cytologically overinterpreted, partly due to the lack of adequate clinical information submitted with the aspirate.
(12) It is indicated that in vitro and at implantation in preliminary infected ordinary and gunshot osseous wounds in rabbits and dogs gentacycol inhibits the growth of aerobic and, that is especially important, anaerobic microflora, limits the development of inflammatory Process and stimulates, to a certain extent, reparative osteogenesis.
(13) At this stage any attempt at definitive removal of diseased tissue would necessarily result in a larger dural defect at a time when local disease and systemic illness present unsuitable conditions for reparative procedures.
(14) Lower parameters of mononuclear content in dermocytograms during the course of treatment correspond to the disturbance of reparative capacities of the organism in groups of patients with the complicated course of the disease.
(15) Some differences in the thickness of the reparative dentin deposited were noted when teeth were grouped according to the amount of remaining dentin.
(16) This shift is thought to parallel the oscillation between unconscious instinctual gratification and conscious attempts at reparation which is the main dynamic feature of the compulsive neurosis in waking life.
(17) Bernier and Cahn established the subdivision between the rare central giant cell reparative granuloma and the common peripheral epulis.
(18) We also hear that Troika officials have been rather surprised by the latest talk about Greece potentially handing Germany a bill for outstanding war reparations .
(19) Secondary syndactyly is the result of mechanical adhesion of adjacent parts involved in a general reparative or healing process.
(20) In the reparative stage newly formed vessels in the granulation tissue were observed; In the post-infarction scars sinusoid vascular cavities and arteries of the closing type were noted.