(a.) Destitute of water; as, anhydrous salts or acids.
Example Sentences:
(1) The quantitative effects of theophylline anhydrous upon exercise-induced asthma (EIA) were evaluated in asthmatic children.
(2) A cyclotron target system for the production of anhydrous [18F] fluoride ion has been developed and used for the synthesis of carrier-free [18F]-3-deoxy-3fluoro-D-glucose (3-FDG).
(3) In 30 patients affected with prevalent nocturnal asthma the authors assessed the efficacy of salbutamol (controlled release of osmotic type) compared with anhydrous theophylline (sustained release).
(4) The reaction in anhydrous ethanol of some substituted 2-aminopyrazines with ethyl 2-benzoyl-2-bromoacetate or with ethyl 3-bromo-4-oxopentanoate afforded a group of ethyl 2-phenylimidazo[1,2-a]pyrazine-3-carboxylates and a group of ethyl 2-methylimidazo[1,2-a]pyrazine-3-acetates, respectively.
(5) We compared the effects of treatment of clinical grade hCG powders with anhydrous HF (hydrogen fluoride) or TFMS (trifluoromethane sulfonic acid).
(6) When 1 was treated with anhydrous acid for 16 h both the H-phosphonate diester and the t-BDMSi group remained intact.
(7) The dimethyl ester of bovine pancreatic ribonuclease-A (dimethyl RNAase-A), the initial product of esterification of RNAase-A in anhydrous methanolic HCl, was isolated in a homogeneous form.
(8) The organic phase was dried with anhydrous sodium sulphate before evaporation.
(9) Police have refused to speculate whether the blast was caused by anhydrous ammonia igniting in the heat of the fire, or if there could be a criminal connection.
(10) Eight healthy volunteers received in a cross-over design GTR-80 (300 mg) and the control preparation (350 mg) at single doses - nine volunteers received the solution in a quantity corresponding to 200 mg anhydrous theophylline.
(11) When L-proline or O-benzyl-trans-4-hydroxy-L-proline phenacyl ester was coupled with Boc-amino acids in dimethylformamide using water-soluble carbodiimide (WSCI) in the presence of anhydrous 1-hydroxybenzotriazole (HOBt) as coupling reagents, extensive racemization was observed at the C alpha of the proline or hydroxy-proline residue.
(12) Influence of the injection site on bioavailability in dogs was investigated for injections with ampicillin anhydrate or amoxycillin trihydrate suspensions.
(13) The effect on acne of 6.25 percent aluminum chloride in anhydrous alcohol is probably due to the disinfectant and antiperspirant action of aluminum chloride whereas the effect of placebo can be assigned to the sebostatic action of alcohol.
(14) An extracellular lipase catalyzing the synthesis of macrocyclic lactones in anhydrous organic solvents was purified to homogeneity from Pseudomonas nov. sp.
(15) The addition of water to anhydrous phospholipids has profound effects on the intermolecular interactions and packing order of phospholipid molecules.
(16) On the basis of selective cleavage with anhydrous hydrogen fluoride and analysis by 1H- and 13C-n.m.r.
(17) Extensive clinical and pharmacokinetic evaluation of Uniphyl (anhydrous theophylline) tablets, 400 mg, shows that once-daily morning dosing is at least equivalent to twice-daily administration of theophylline.
(18) Compound 9 was also obtained by condensation of 1 with 2,3,4-tri-O-benzyl-6-deoxy-6-fluoro-beta-D-glucopyranosyl fluoride (4) in the presence of silver perchlorate and anhydrous stannous chloride.
(19) L-3-(3,4-Dihydroxyphenyl)alanine (DOPA) and its 3-O-methyl metabolite (OMD) were measured in plasma and cerebrospinal fluid by a new assay which combines N,O-acetylation of amino acids in aqueous media, preparation of pentafluorobenzyl esters under anhydrous conditions, and analysis by gas chromatography-electron capture negative ion mass spectrometry.
(20) During dehydration, hydrated alpha-form (decahydrate) crystals and beta-form (pentahydrate) crystals became anhydrate gamma-form crystals, with the diffraction angle shifting toward shorter spacing accompanied by line broadening.
Borax
Definition:
(n.) A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colors on porcelain, and as a soap. It occurs native in certain mineral springs, and is made from the boric acid of hot springs in Tuscany. It was originally obtained from a lake in Thibet, and was sent to Europe under the name of tincal. Borax is a pyroborate or tetraborate of sodium, Na2B4O7.10H2O.
Example Sentences:
(1) The relation of respiratory symptoms, pulmonary function, and abnormalities of chest radiographs to estimated exposures of borax dust has been investigated in a cross sectional study of 629 actively employed borax workers.
(2) In the borax zone the pH is increased compared with the pH of the mobile phase, and when omeprazole (a weak acid) is co-eluting in the borax zone its retention is affected.
(3) We found that in certain buffers, such as tris(hydroxymethyl)-aminomethane-hydrochloride, boric acid-borax, and N-hydroxyethyl piperazine-N'-2-ethanesulfonic acid-sodium hydroxide, hemoglobins released from erythrocytes were easily precipitated by addition of Zn2+, thus resulting in a false inhibition of hemolysin by Zn2+ when hemolysis was assayed by measuring absorbance at 540 nm of released hemoglobins.
(4) Myelin staining was achieved with Harris' hematoxylin when sections were delipidized and were differentiated in either acid-formalin or borax-ferricyanide.
(5) Crude borax ore and kernite ore induced weak transformation that was not dose-dependent and was not reproducible in another experiment.
(6) Laboratory bioassays with Culicoides variipennis larvae from Borax Lake, CA, indicated an LC90 of 16.8 ppb for pyrethrins at 23 degrees C. A field test in a pond adjoining the lake reduced adult C. variipennis emergence greater than 99% for over 30 days after treatment at a rate of 131 ppb pyrethrins.
(7) In the first case we used Bathurin in combination with borax at a concentration of 1.3% for both substances.
(8) Hepatitis B surface antigen (HBSAg) adsorbed from sera onto colloidal silica could be completely eluted through the use of 0.25% sodium deoxycholate in 0.01 M borax, pH 9.3, at 56 degrees C. The HBSAg recovered in the eluate represented 100% of that present in the original serum, and it was contaminated by only trace amounts of serum proteins (in decreasing amounts: beta-lipoprotein, immunoglobulin G, albumin).
(9) The size of the zone varies with the concentration of borax in the sample injected.
(10) By using of dehydration borax as purification agent during melting alloy was illustrated.
(11) Microheterogeneity of human serum albumin was studied by isoelectric focussing in ampholines and the borax-borate buffer-mannite system within the pH range 4.0--6.0 and by fractional precipitation in 3 M KCl.
(12) Dibucaine was dispersed in the gel which was prepared by gelation of the konjac flour in a borax solution at 60 degrees.
(13) To overcome these deficiencies, 3 changes in the method were made: (1) the defatting step was modified to use sodium lauryl sulfate in combination with borax for better defatting; (2) 40% isopropanol was substituted for 60% ethanol as the aqueous phase for cleaner papers; and (3) mineral oil was substituted for n-heptane to improve hair recoveries.
(14) Borax dust appears to act as a simple respiratory irritant and perhaps causes small changes in the FEV1 among smokers who are heavily exposed.
(15) Amongst the traditional medicines, it was noticed that sodium tetraborate (borax) and alum reduced appreciably the fluid requirement in many cases of acute childhood diarrhoea.
(16) pills" (with borax, methanol and cocaine) were delivered freely at the chemist's shop.
(17) A method is described, which is based on mordantings with a silver nitrate solution then with a borax solution and on an physical development.
(18) Flocculation from a homogenate previously clarified by the use of borax is best suited for large-scale operation.
(19) During the course of investigation of two infants with seizure disorders it was discovered that both had been given large amounts of a preparation of borax and honey which resulted in chronic borate intoxication.
(20) DYBH-bait formulations with about 17 per cent borax are very attractive and have a good effectivity.