(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.
Solder
Definition:
(n.) A metal or metallic alloy used when melted for uniting adjacent metallic edges or surfaces; a metallic cement.
(n.) anything which unites or cements.
(n.) To unite (metallic surfaces or edges) by the intervention of a more fusible metal or metallic alloy applied when melted; to join by means of metallic cement.
(n.) To mend; to patch up.
Example Sentences:
(1) This study compared soldering by a conventional torch procedure with an infrared soldering technique.
(2) However, the effect of the soldering atmosphere on the tensile strength was small.
(3) No effects on behavioral function were observed among the solderers.
(4) This contaminant was not present after a control exposure while soldering on iron.
(5) The following therapeutic proposal was adapted: On the maxilla, a three-step procedure: first step: building of metal copings on 13, 16 and 26 and metal-ceramic crowns on 11 and 21, second step: building of telescop crowns on 16 and 26 and clasps on 13, 11 and 21, third step: casting of the removable partial denture framework and soldering to the telescop crowns and clasps.
(6) Wettability of the liquid solder on UNI METAL was better than on Victory II.
(7) The stainless steel shank is a cathodic component of a three-way galvanic cell, whereas the silver soldered joint is an anodic component.
(8) If you only have an 20cm tin you can use that instead, but don't use all the batter – about 80% will suffice – otherwise you'll end up with a volcanic overspill, cake soldered to the floor of the oven and a frayed temper.
(9) Using the rat as a model, a partial transection of the ventral urethra was repaired in one of three ways in 39 animals: conventional microsuture repair, laser assisted microsuture repair and laser assisted microsuture repair with a protein solder.
(10) Three alloys had corrosion resistance superior to the other solders.
(11) We form a kind of chain, soldered together by grief and suffering, but also by a way of living and thinking which the killers wanted to destroy.
(12) Workers in the following job categories experienced the highest annual mean PbB levels: paste machine operators (battery plants), solder-grinders (assembly plants), and crane operators (foundries).
(13) Soldering flux used in the electronics industry can cause both irritant and allergic contact dermatitis.
(14) Soldering fractures constitute an important cause of the removal of appliances during the first 8 years following application.
(15) In this study about melting and torchs employed in solder in fixed prosthodontics, it's analysed the accurate melting, adequate quantity, as well as protection of adjacent tissues with an accurate anti-melting.
(16) Two cobalt-chromium alloys (Blue Elgiloy, Crozat) and an austenitic stainless steel alloy (Remanium) were soldered by an electrochemically generated hydrogen-oxygen flame forming an overlapped joint design.
(17) The aim of this study was to determine the release of Au, Cu, Sn, Zn, and Ag from five commercially available Cd-free gold solders.
(18) The question of whether to cast in one piece or in multiple sections that are soldered is discussed.
(19) In the case of soldering electrically wrought wire clasps to metal structures such as rests and connectors, there is no fear of of overheating a wide area of wires.
(20) In the sample studied the proportion of foods contained in non-soldered as opposed to soldered cans has risen consistently during the survey and now accounts for 83% of all samples (excluding sardines).