What's the difference between ammonia and ammoniac?
Ammonia
Definition:
(n.) A gaseous compound of hydrogen and nitrogen, NH3, with a pungent smell and taste: -- often called volatile alkali, and spirits of hartshorn.
Example Sentences:
(1) This method provided myocardial perfusion images of high quality which were well correlated with N-13 ammonia images.
(2) Studies were performed to characterize the determinants of proximal tubule ammonia entry (and retention) in vivo.
(3) Confirmation of the striking correlation between increased urinary ammonia and lowered neonatal ponderal index may afford a simple test for the identification of nutrient-related growth retardation.
(4) However, almost all of the numerous compounds found to inhibit ammonia oxidizers also inhibit methanotrophs, and most of the inhibitors act upon the monooxygenases.
(5) An otherwise progressive rise in blood ammonia concentration was halted in the treatment group.
(6) The high rate of H pylori ammonia production in uraemic patients should accentuate any ammonia induced effects.
(7) The determination of ammonia in plasma, using glutamate dehydrogenase, is complicated by non-specific oxidation of the coenzyme, promoted by components of the sample matrix.
(8) The methanol-ammonia (20:1) and chloroform-methanol-ammonia (2:2:1) systems, used with silica-gel plates, are the most promising for rapid preliminary screening of tuna fish extracts for histamine.
(9) The effect of ammonia is partially reversed by nitrate.
(10) The addition of glutamine or ammonia increased glycine incorporation of control cultures, but failed to do so in treated cultures.
(11) Plasma dextrose and bicarbonate declined in concentration while potassium, lactate, LDH, ammonia, and hemoglobin rose with storage.
(12) The changes were proportional to the concentration and duration of ammonia treatment.
(13) The Km for ammonia of carbamyl phosphate synthetase was determined by preincubating isolated liver cells for 30 min in the absence of ammonia and bicarbonate and in the presence of ornithine, chloroquine, which blocks lysosomal proteolysis, and aminoxy acetic acid, which inhibits transaminases.
(14) The highest predictive values for the exclusion of TiC are shown by inconspicuous concentration capacity accompanied by normal ammonia excretion, total acid excretion, water diuresis, free water clearance or urine dilution capacity.
(15) All dogs were evaluated at the beginning of the study by complete physical examination; total and differential WBC counts; serum biochemical analysis (alanine transaminase and alkaline phosphatase activities and bilirubin and albumin concentrations); sulfobromophthalein excretion, ammonia tolerance, and glucagon response testing; portal and intraparenchymal pressure determinations; operative mesenteric portography; and histologic assessment of hepatic biopsy specimens.
(16) The significant differences (p=0.001) are found by lysine, ammonia, histidine, arginine, threonine, glutaminic acid, and phenyl alanine.
(17) Formation of anthranilate will proceed in the presence of partially pure subunit I provided ammonia is available in place of glutamine.
(18) Net synthesis of microbial N (Nn) was calculated from ammonia-N incorporation.
(19) Attachment of sufficient quantities of PEG to phenylalanine ammonia-lyase substantially reduces immunological recognition and clearance of the conjugated enzyme in mice.
(20) No direct relationship exists between glutamate dehydrogenase (NADP+) and glutamate-ammonia ligase in P. denitrificans, while the glutamate synthase (NADPH) activity changes in parallel with that of the latter enzyme.
Ammoniac
Definition:
(a.) Alt. of Ammoniacal
(n.) Alt. of Gum ammoniac
Example Sentences:
(1) The ammoniacal silver method, which identifies basic proteins, gives a positive reaction in cytoplasmic granules of rat peritoneal mast cells.
(2) Ammoniacal extracts of bloodstains and dried bloodstains on cotton substrata behaved comparably with respect to the parameters studied.
(3) Fertilizers were added to the soils in amounts to represent a cross section of a fertilizer band, ranging from 100 to 1000 ppm ammoniacal nitrogen.
(4) The proposed method is simple (only beryllium and an ammoniacal buffer are needed to develop fluorescence), rapid (the derivative formation is instantaneous and serum treatment only requires deproteinization), and inexpensive (no sophisticated detection equipment is necessary, any conventional modern spectrofluorimeter being adequate for use).
(5) Originally, the ammoniacal silver reaction relied upon primary fixation in dilute formalin which prevented optimum fixation of tissues.
(6) Both the anionic Coomassie Brilliant Blue dye and SDS detergent improved the sensitivity of silver staining in native gels, and ammoniacal silver was more sensitive than neutral silver, suggesting silver staining to be a charge dependent process.
(7) The effects of absorption time, titer of antiserum or lectin in the absorption stage, and elution temperature on relative antibody or lectin yield in elutes in the absorption-elution procedure were studied in bloodstains and ammoniacal extracts of bloodstains using conventional grouping reagents.
(8) This work introduces a comparison between two methods: the ammoniacal water method and Cripps's differential method.
(9) Proteins were detected with ammoniacal silver stain.
(10) Finally, they show that falsely positive reactions in alkaline urines because of ammoniacal fermentation cannot be ascribed to the increase of pH, but rather directly to an excess of ammonium ions.
(11) Reticular and collagenous fibers stain differently when subjected to ammoniacal silver reduction.
(12) The oxidation is carried out at room temperature and in aqueous ammoniacal solution.
(13) Epiphyseal growth plate chondrocyte nuclei of growing rats were studied for histone content using the ammoniacal silver technique.
(14) Chromatin template activity and histones were studied in the rat superior cervical ganglion neurons of the 2nd, 10th and 60th days after bilateral pre- or postganglionic nerve division using the Moore method and the Black and Ansley ammoniacal silver staining technique.
(15) After studying various criteria (repeatability, limit of detection, accuracy, reference values, stability of the reaction), and after studying the correlation between each method and the benzidin method, used as reference method, as well as the correlation between all of them, Cripp's method turns out to be the closest to the benzidin method, as well as being simpler, more accurate, more specific, and also easier to use than the ammoniacal water method, the only problem occurring at the stage of the preparation of the standard solution.
(16) Stem cells and early erythroblasts exhibit no, or little, ammoniacal silver reaction product, while small basophilic erythroblasts, polychromatophilic erythrocytes, and reticulocytes exhibit an increasing amount of reaction product as maturation proceeds.
(17) The method applied is based on the reaction of these compounds with beryllium in an ammoniacal medium to yield highly fluorescent derivatives.
(18) The ammoniacal silver reaction in the erythroid cell series is interpreted as reflecting either the accumulation of newly synthesized arginine-rich histones or changes in the availability of reactive sites in preformed histones.
(19) Also, the ammoniacal silver reaction in human polymorphonuclear leukocytes is exclusively located in the large, crystalline cytoplasmic granules of eosiniphils.
(20) For the clinician valuable points of difference were a more prolonged and chronic course and, on physical examination, the absence of serious circulatory disturbances and the absence of an ammoniacal-uraemic odour in the expired air.