نتایج جستجو برای: sodium hydrogen carbonate

تعداد نتایج: 348394  

Journal: :International journal of advanced academic studies 2022

Considering the impacts of agricultural runoff, domestic and industrial effluents on quality many dams rivers as cited in literature, a physico-chemical study regarding water assessment Ghunghuta dam has been carried out to indicate irrigation suitability water. In present study, parameters like pH, EC, TDS, TH, Ca, Mg, Na, K, carbonate bicarbonate were estimated evaluate sodium percentage (% N...

Journal: :Catalysts 2023

In this work we demonstrate one-pot glycidol synthesis, via trans-esterification between glycerol and dimethyl carbonate, by making use of commercially available sodium methoxide as a catalyst. An excellent conversion (99%) remarkable yield (75%) was obtained using carbonate/glycerol (molar ratio 2:1) in the presence 3 wt% catalyst amount (with respect to weight) at 85 °C for reaction time 120 ...

Journal: :iranian endodontic journal 0
mohammad samiei maryam janani amin vahdati yalda alemzadeh mahmoud bahari

introduction: the present study evaluated the element distribution in completely set calcium-enriched mixture (cem) cement after application of 35% carbamide peroxide, 40% hydrogen peroxide and sodium perborate as commercial bleaching agents using an energy-dispersive x-ray microanalysis (edx) system. the surface structure was also observed using the scanning electron microscope (sem). methods ...

2007
K.C.C. Tse D. Nikezic K. N. Yu

The bulk etch rate for CR-39 in NaOH/ethanol was faster than those in aqueous solution of NaOH (NaOH/H2O). Furthermore, a layer of precipitate always accumulates on the surface of CR-39 detector during etching in NaOH/ethanol, which is absent during etching in NaOH/H2O. In the present work, mass spectrometry results have shown that the same etched products are present in the etchants of NaOH/H2...

2015
Huiming Fan Xueqin Wang Jianan Liu Binfeng Xu

Ground calcium carbonate (GCC) was modified by starch with the aid of sodium stearate and sodium hexametaphosphate. The GCC was encapsulated within the complex. The effect of the dosages of sodium stearate and sodium hexametaphosphate on the coating weight of modified GCC and the complex utilization rate were studied. The SEM images of modified GCC were compared with that of unmodified GCC. The...

2013

Due to urbanization, trees and plants which covered a great land mass of the earth and are an excellent carbon dioxide (CO2) absorber through photosynthesis are being replaced by several concrete based structures. It is therefore important to have these cement based structures absorb the large volume of carbon dioxide which the trees would have removed from the atmosphere during their useful li...

2015

Crude Maillard reactive product (MRP) and Maillard reactive product precursors (MRPP) of C. albidum pulp origin were extracted by varying temperature 0 C (30-70), time (min) (10-30 ) and addition of sodium carbonate solution (%) (2-10 mL) using the central composite rotatable designs. Equations for predicting objective indices namely; crude melanoidin, free amino acids, reducing sugar and relat...

2017
Regina Huber Regine Schoenlechner

Fresh egg waffles are continuously baked in tunnel baking ovens in industrial scale. Waffles that partly or fully stick to the baking plates cause significant product loss and increased costs. The aim of this study was, therefore, to investigate the effect of different recipe ingredients on the sticking behavior of waffles. In this second part, ingredients investigated were different leavening ...

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