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oxide which is combined to an amalgamation of potassium, alteration of silica and elemental sulphur, especially when the medium is rich in sulphate and contains elements such as Na, P and N, and K......
, 56 and 84 d after surgery by intravenous injection of concentrated potassium chloride. Afterwards, block sections including implants and surrounding femur bone tissues were collected, as well......
%), tetraethylorthosilicate (TEOS, 99%), sodium hydroxide (99%), potassium hydroxide (99%), hydrochloric acid (37 wt %), and malachite green oxalate (C26H27N2O6, Mw:463.5 g/mol) were purchased from......
with an optical microscope. Total dissolved iron concentrations in solution were measured by atomic absorption spectrophotometry. Ferrous iron concentration was determined by titration with potassium......
), hydrogen peroxide (H2O2) and potassium dichromate (K2Cr2O7) were purchased from Sinopharm Chemical Reagent Co., Ltd. The stock solution of Cr(VI) was prepared by dissolving K2Cr2O7 in ultrapure......
and 30 mL dry tetrahydrofuran (THF) was prepared and then was stirred for about 5 min. It should be mentioned that the THF was predried overnight by potassium hydroxide before using. Then, 5 mL of 1......
Metallurgy, 2015, 11: 36-38. (in Chinese) [20] ALP I, CELEP O, PAKTUNC D, THIBAULT Y. Influence of potassium hydroxide pretreatment on the extraction of gold and silver from a refractory ore [J......
exchangeable cation, mainly including potassium (K+), calcium (Ca2+), sodium (Na+) and magnesium (Mg2+). In the crystal structural formula, H2O is written on the front, indicating that H2O is packed......
as the working electrode. The SCE needs to be calibrated before used. Briefly, the new SCE and the SCE which needs to be calibrated were placed in the saturated potassium chloride solution and connected......
explanations for better performance with Li-flux and tube II are given below. Fig. 6 Micrograph of tube-fin joint for sample corresponding to confirmation test Potassium fluoroaluminate fluxes are commonly......
