نتایج جستجو برای: bicarbonates and sodium hydroxide salts
تعداد نتایج: 16856998 فیلتر نتایج به سال:
Electrolyte solutions in alkaline nuclear waste contain aluminate, hydroxide, nitrate and nitrite with sodium as the predominant counterion. The salts of these ions are highly soluble, so liquids concentrated. This study found that there is a substantial incompatibility between hydroxide and/or ions. was determined by observation adding just one molal NaNO2 or NaNO3 to saturated NaOH solution r...
A method is presented for measuring lipase activity in serum by use of either triolein or olive oil as substrate. The method requires 3 to 8 mm for each measurement and 5 to 8 mm for initial set-up. The reaction mixture is maintained at the optimum pH of 8.8 by automatic addition of sodium hydroxide (10 mmol/liter) with a ‘pH-Stat.” Amount of sodium hydroxide delivered per unit time reflects li...
effects of sodium salt solutions on physicochemical and sensory characteristics of refrigerated persian sturgeon (acipenser persicus) fillets during 12 days of storage were investigated. fillets were dipped in solutions (2.5% w/v) of sodium acetate (sa), sodium lactate (sl), sodium citrate (sc) and distilled water (as control) for 10 minutes and then packaged. an assessment of tbars, ffa, ph, h...
Analyses have been made of the inorganic constituents of the juices expressed from the leaves of Rheum, Rumex, and Oxalis. It has been shown that in all cases there is a large excess of inorganic cations over anions in the sap, the average ratio of cations to anions being 3.8 (Part 1, p. 239). The ash analyses of plant tissues (chiefly leaves) reported in the literature have been examined criti...
In this research magnetic nanoparticles of cobalt–zinc ferrite (Co1-xZnxFe2O4, x=0, 0.2, 0.4, 0.6, 0.8), have been synthesized by the coprecipitation method, using stable ferric, zinc and cobalt salts with sodium hydroxide, at 80 ˚C. Phase formation and the morphology of the resulting nanoparticles were studied by X-ray diffraction and transmission electron microscopy respectively. Mean crystal...
Introduction. Sepsis and its consequences such as metabolic acidosis are resulting in increased mortality. Although correction of metabolic acidosis with sodium bicarbonate seems a reasonable approach, there is ongoing debate regarding the role of bicarbonates as a therapeutic option. Methods. We conducted a PubMed literature search in order to identify published literature related to the effec...
Trans- and cis-2-aryl-3-(2-cyanoethyl)aziridines, prepared via alkylation of the corresponding 2-aryl-3-(tosyloxymethyl)aziridines with the sodium salt of trimethylsilylacetonitrile, were transformed into variable mixtures of 4-[aryl(alkylamino)methyl]butyrolactones and 5-[aryl(hydroxy)methyl]pyrrolidin-2-ones via KOH-mediated hydrolysis of the cyano group, followed by ring expansion. In additi...
The production of acetic acid by Clostridium thermoaceticum was studied by using batch fermentations. In a pH-controlled fermentation with sodium hydroxide (pH 6.9), this organism was able to produce 56 g of acetic acid per liter. On the other hand, when the pH was not controlled and was decreased during fermentation to 5.4, the maximum attainable acetic acid concentration was only 15.3 g/liter...
Water produced with coalbed natural gas (CBNG) attains its characteristic sodium-bicarbonate composition through a series of processes, including dissolution of salts, precipitation of salts, pyrite oxidation, ion exchange, sulfate reduction, and methanogenesis. After CBNG-produced water is discharged to the surface, interaction with the atmosphere will initiate the precipitation of calcite, ir...
Nanostructures of magnesium oxide is one of the most attractive materials which have shown various applications in many aspects of industries. So, finding a controllable and inexpensive technique to produce desirable nanostructures of MgO is valuable. In this work, magnesium oxide (MgO) with different morphologies was successfully prepared via a simple solid-state method. The molar ratio of sod...
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