The most important affect of temperature on emulsion stability is the viscosity because the emulsion viscosity decreases by increasing temperature. This decrease is due to oil viscosity decreased. Therefore at high temperature, a kinetic barrier to restrict coalescence still exists. Temperature also affects the amount of buildup of interfacial films by changing the characteristics at the interface and adsorption rate. Droplet size Emulsion droplet sizes range lie from less than micron to greater than 50 microns.
Ethylene Oxide used to produce ethylene glycol *Introduction Ethylene oxide majorly contributed in the production of ethylene glycol, which is used as a chemical intermediate in the manufacture of polyesters for fibres, films, bottles etc. with a further 25% used as antifreeze in engine
1.It is seen that as the depletion of AA ensures within 10 minutes after ACTH injection the peroxidase activity tends to show an increase. A marked increase in peroxidase activity is observed between 30-60 minute sof ACTH injection, the optimum being observed between 60-90 minutes when the ascorbate content is the lowest. Peroxidase activity falls rapidly at 2 hrs. when ascorbate level begins to recover. An inverse relationship between ascorbate content and peroxidase activity in the adrenal is clearly
To 200 µl sodium nitroprusside (5Mm), 800 µl extracts (0.1-1 mg/ml) dissolved in PBS (25 mM, pH 7.4)was added.The mixture was incubated for 2.5 hrs. at 37ºC under normal light followed by incubation in dark for 20 min. 600 µl Griess reagent was added and incubated for 40 min. at room temperature and absorbance was measured at 540 nm against a suitable blank (2ml H2O and 0.6 ml Griess reagent). Control (1.6 ml H2O, 400µl SNP and 600µl Griess reagent) was prepared and percent of inhibition was calculated by using this
Due to variation in the tire rubber type and additives, the chemical compositions of pyrolysis oil produce during pyrolysis were complex. The main component of pyrolysis oil is aromatic compounds with percentage of 65-79 wt. % as high temperature favors the formation reaction of aromatic compound . It is also stated by G.C. Choi that pyrolysis oil produced from the process has high calorific value and possess the same property as commercial heating oil which make pyrolysis oil one of the alternative
The pH reduces abruptly from the initial day and comes to a lower value at a 6.2 at the 9th day which denotes the acidogenic phase of the system. The Ph value started to increase from the 10th day and the pH at the days of highest gad production was 7.21 at the 18th day. The biogas gas production starts to increase rapidly from 13th day to 18th day indicating the methanogenic phase. The pH then remain more or less same and tends to higher value at the last few days of experiment. The pH of the digested slurry at the last days of reading is found to be
Mortar is a workable paste of cement, sand and water which is used to fill the irregular gaps, voids and bind the masonry units together. The cement mortar is also used in plastering of wall structures in order to give a smooth finish and protect the structure. But cement plaster possesses low strength, absorbs more water and large number of pollutants from the atmosphere and deteriorate the structure which leads to surface cracks and damping. Thus in order to suppress these defects, cement plaster is added with nanomaterial and pozzolanic materials. The aim of this thesis is at making and studying the different strength properties of cement mortar and modified mortar.
degradate at different temperature7. Thermal degradation of CMCs possess an initial weight loss in the region of 30-160 °C is mainly due to the removal of loosely bound water (moisture) on the surface of cellulose4,22,30,38,45. CMCs depict the major degradation takes place in two-steps. First weight loss occurs between temperature around at 180-250 °C with 7.5 wt.% loss is ascribed to the depolymerization of hemicellulose, pectin and cleavage of glycosidic linkages of the samples46. The major weight loss occurs at increasing the temperature of 270-430 °C with 88 wt.% loss is due to the degradation of lignin and cellulose.
As shown, the experimental results indicate that the steam ejector can operate at Tp = 40 – 70 °C and Ts = 25 °C, respectively. In Fig. 6, it was found that the COP of the steam ejector decreases with the increasing of the primary steam temperature. The COP could reach 2.64 when Tp = 40 °C, which is about 4.5 times as high as that at Tp = 70 °C. It was also found that the critical condensation temperature of the steam ejector increases with the increasing of the primary steam temperature.