Each of them was related to the presence of the [B.sub.3][O.sub.3][0.sub.3] boroxol rings, [B.sub.3][O.sub.3][[empty set].sub.4.sup.-] triborate rings, [B.sub.5][O.sub.6][[empty set].sub.4.sup.-] pentaborate groups, [B.sub.8][O.sub.10][[empty set].sub.6.sup.2-] tetraborate
groups, [B.sub.4][O.sub.5][[empty set].sub.4.sup.2-] diborate groups, and [B.sub.3][O.sub.6.sup.3-] cyclic metaborate anions.
Experimental materials Purity Application Sodium dihydrogen phosphate dihydrate AR Hydrated salt (Na[H.sub.2]P[O.sub.4] x 2[H.sub.2]O,) Sodium alginate CP Thickener Sodium thiosulfate pentahydrate AR Hydrated salt ([Na.sub.2][S.sub.2][O.sub.3]- 5[H.sub.2]O) Dipotassium hydrogen phosphate AR Hydrated salt trihydrate phosphate ([K.sub.2]HP[O.sub.4] x 3[H.sub.2]O) Nanoactivated carbon (100 nm, heat AR Nucleating agent treatment) Sodium tetraborate
AR Nucleating agent Polyethylene glycol 400 AR Dispersant Sodium fluoride AR Nucleating agent Table 2: Result uncertainty analysis of experimental equipment.
decahydrate (EMD Chemical) 0.40
The precipitation of hyaluronic acid was collected by centrifugation and its concentration was estimated by Carbazol reagent, using sulfuric acid with 0.025 M sodium tetraborate
, following Filisetti-Cozzi and Carpita (1991), with modifications.
The bound nucleic acid was washed twice with 400 [micro]L wash buffer I (5 M guanidine thiocyanate, Tris-HCl, Triton X 100, and EDTA), twice with 500 [micro]L wash buffer II (MES), and once with 500 [micro]L wash buffer III (disodium tetraborate
A 25 [micro]L extract or standard was mixed with 225 [micro]L derivatization reagent (40 mg OPA in 1 mL methanol, 5 mL 0.1 M sodium tetraborate
(pH 8.9 to 9.1), and 50 [micro]L 2-mercaptoethanol--OPA-MCE).
The most daily consumed types of boron in mammalian life are Sodium tetraborate
decahydrate (STD) and pentahydrate (STP) which are intakes via food and drinking water and excretes via urinary system.
Dibasic sodium phosphate, sodium carbonate, Folin-Ciocalteu reagent (FCR), sodium hydroxide, sodium tetraborate
decahydrate, 1-butyl-3-methylimidazolium chloride, nitric acid, and hydrogen peroxide as well as standard compounds catechin, piceid (polydatin), transresveratrol, quercetin, myricetin, quercetin glucoside, kaempferol, 3, 4-dihydroxybenzoic acid (3, 4-DHB), caffeic acid, syringic acid, salicylic acid, ferulic acid, gallic acid, sinapinic acid, myo-inositol, arabitol, glucitol, mannitol, fucose, cellobiose, galactose, glucose, fructose, arabinose, xylose, ribose, acetic acid, were purchased from Sigma-Aldrich (Germany or USA).
It reveals that comprehensive modifications of the physical and chemical properties of native starches are possible by reacting them with urea and disodium tetraborate
The optrode was calibrated in a zero solution of 0.01 mol [l.sup.-1] sodium tetraborate
saturated with sodium sulfite, and a 100% standard obtained from water-saturated air at the measurement temperature of 25.3[degrees]C.
([Na.sub.2][B.sub.4][O.sub.7]), sodium dihydrogenphosphate (Na[H.sub.2]P[O.sub.4]), hydrochloric acid (HCl), and ACN were purchased from Merck (Darmstad, Germany); sodium hydroxide (NaOH), trichloroacetic acid (TCA) and methanol (MeOH) were obtained from Panreac (Barcelona, Spain); and sodium docedyl sulphate (SDS) was purchased from Sigma.
Srinivasan, "Solid state structural transformation of tetraborate
into monoborate in the interlayer galleries of reconstructed ZnAl layered double hydroxide," Journal of Physical Chemistry C, vol.