(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.
Cornstarch
Definition:
(n.) Starch made from Indian corn, esp. a fine white flour used for puddings, etc.
Example Sentences:
(1) The use of oral cornstarch supplements enabled the child to maintain normoglycemia and was associated with clinical and biochemical improvement.
(2) When the P64.8 diet was progressively diluted with cornstarch, hamsters increased their intake of this diet fraction, but protein intake nevertheless declined.
(3) A basal corn-cornstarch-soybean meal diet was formulated to contain .55% lysine.
(4) Two nurses suffered anaphylaxis to cornstarch glove powder.
(5) Solid excipients, cornstarch, and talcum powder when injected intra-arterially decreased flow, and vascular obstruction was shown angiographically.
(6) We report the successful use of raw cornstarch to maintain normoglycemia in two children with nesidioblastosis.
(7) Raw cornstarch administration consistently maintained blood glucose levels in the normal range.
(8) The sucrose-fed group had a greater 4-d excretion of tritium (urinary + fecal) than did the invert sugar- or cornstarch-fed groups (P less than 0.01).
(9) It is concluded that cornstarch, as used on surgical gloves, caused peritoneal adhesions and should therefore be removed before surgery.
(10) Either a corn-soy diet or a cornstarch-soy diet was used as the basal diet in the various studies.
(11) A range of cornstarch fermentation rates was found with suspensions from 20 human subjects.
(12) Litter size at d 28 was greater (P less than .07) for sows fed cornstarch than for sows fed tallow.
(13) The animals were fed a protein-free diet that consisted of 79.7% cornstarch, 10% sucrose, 3% Alphafloc (a source of cellulose), 3% canola oil and a vitamin-mineral premix.
(14) Cornstarch therapy was associated with maintenance of normoglycemia, increased growth velocity, and decreased serum aminotransferase concentrations in all patients.
(15) A slowly absorbed starch such as cornstarch may be an effective component in dietary management of this disorder.
(16) The two main conclusions from this study are that thyroid hormone metabolism is altered by iron deficiency regardless of food intake and that the best purified rodent diet for this type of study would contain a mixture of carbohydrate types to avoid the stimulation of thyroxine monodeiodinase by a 70% cornstarch diet.
(17) In contrast to its effects when mixed in the raw cornstarch, mixed in the cooked cornstarch diet, acarbose consumption was not accompanied by any significant fecal losses of dietary starch.
(18) Azotemic subtotally nephrectomized Sprague-Dawley rats were pair-fed a 30% casein diet supplemented with a 10% keto acid mixture (n = 10) or 10% cornstarch (n = 10) for 18 weeks.
(19) Preliminary experience with the use of sodium bicarbonate as a substitute for cornstarch derivatives to "lubricate" surgical gloves has proved promising in eliminating the hazard of starch peritonitis.
(20) Maximum plasma glucose concentrations in the sturgeon fed fructose, galactose, sucrose, lactose, dextrin, raw cornstarch or cellulose were not significantly different.