In this study, single and interactive effect of three parameters, pH, ferrous and pulp concentration has been investigated by a 2^3 full factorial CCRD （central composite rotatable design） composed of eight factoria...In this study, single and interactive effect of three parameters, pH, ferrous and pulp concentration has been investigated by a 2^3 full factorial CCRD （central composite rotatable design） composed of eight factorial points, six central and six axial points. Initially, ＂none＂ mode from transformation subsection was chosen as the default choice for both responses, i.e. %recovery and gram of recovered zinc. Box-Cox plots give the best Lambda for each response （y^Lambda= f （A, B, C .....）） which occur at 1.91 and 2.16 for %recovey and gram of recovered zinc, respectively. A linear （y^1.91 = f （linear）） and a quadratic （y^2. 16= f （quadratic）） equation were suggested by software as the model for %recovery and gram of recovered zinc, respectively. Analysis of variance （ANOVA） for both models shows a high coefficient of determination （R^2）. In order to optimize and find the best conditions under which three parameters occur appropriately, optimization was done numerically. Desirability plots indicate properly that the best conditions occur at pH = 1.46, ferrous = 6.67 g/L, %pulp = 7.1 （%w/v）, %recovery = 86.5, gram of recovered zinc = 0.63 g and desirability = 0.777. Finally, PRP （progressive route of the process） analysis donates us a proper insight of what is happening during these 30 days. PRP analysis categorizes flasks in two parts, 1- flasks worth economically, 2- flasks with one-time-usable feed materials.展开更多
The Yellow Wallpaper examines the role of women in 19th-century American society, including the relationship between husbands and wives, the economic and social dependence of women on men, and the repression of female...The Yellow Wallpaper examines the role of women in 19th-century American society, including the relationship between husbands and wives, the economic and social dependence of women on men, and the repression of female individuality and sexuality. The Victorian era had a profound impact on social values in the United States, stressing that women were to behave gracefully and remain within the domestic sphere. The novel takes place in a country house located about three miles from the nearest village. The Setting has the appearance of tranquility, but is actually a place of confinement--There are bars on the windows of the nursery, and the bed is secured to the floor The isolated location of the house, its somewhat neglected condition, and her further isolation in the fortress-like nursery, symbolize the narrator＇s mental condition. Several symbols are employed in the story to reveal the oppression of women by men and the struggle against that male dominated society. The yellow wallpaper is symbolic of the Cult of True Womanhood, which binds women to the home and family. Like Charlotte Gilman, women were constricted to the set parameters that men determined. Getting beyond the yellow wallpaper, women defied the corrupted power that men wielded over women, escaped their confinement, and created for themselves a new ideological role, one that included entry into the public sphere展开更多
文摘In this study, single and interactive effect of three parameters, pH, ferrous and pulp concentration has been investigated by a 2^3 full factorial CCRD （central composite rotatable design） composed of eight factorial points, six central and six axial points. Initially, ＂none＂ mode from transformation subsection was chosen as the default choice for both responses, i.e. %recovery and gram of recovered zinc. Box-Cox plots give the best Lambda for each response （y^Lambda= f （A, B, C .....）） which occur at 1.91 and 2.16 for %recovey and gram of recovered zinc, respectively. A linear （y^1.91 = f （linear）） and a quadratic （y^2. 16= f （quadratic）） equation were suggested by software as the model for %recovery and gram of recovered zinc, respectively. Analysis of variance （ANOVA） for both models shows a high coefficient of determination （R^2）. In order to optimize and find the best conditions under which three parameters occur appropriately, optimization was done numerically. Desirability plots indicate properly that the best conditions occur at pH = 1.46, ferrous = 6.67 g/L, %pulp = 7.1 （%w/v）, %recovery = 86.5, gram of recovered zinc = 0.63 g and desirability = 0.777. Finally, PRP （progressive route of the process） analysis donates us a proper insight of what is happening during these 30 days. PRP analysis categorizes flasks in two parts, 1- flasks worth economically, 2- flasks with one-time-usable feed materials.
文摘The Yellow Wallpaper examines the role of women in 19th-century American society, including the relationship between husbands and wives, the economic and social dependence of women on men, and the repression of female individuality and sexuality. The Victorian era had a profound impact on social values in the United States, stressing that women were to behave gracefully and remain within the domestic sphere. The novel takes place in a country house located about three miles from the nearest village. The Setting has the appearance of tranquility, but is actually a place of confinement--There are bars on the windows of the nursery, and the bed is secured to the floor The isolated location of the house, its somewhat neglected condition, and her further isolation in the fortress-like nursery, symbolize the narrator＇s mental condition. Several symbols are employed in the story to reveal the oppression of women by men and the struggle against that male dominated society. The yellow wallpaper is symbolic of the Cult of True Womanhood, which binds women to the home and family. Like Charlotte Gilman, women were constricted to the set parameters that men determined. Getting beyond the yellow wallpaper, women defied the corrupted power that men wielded over women, escaped their confinement, and created for themselves a new ideological role, one that included entry into the public sphere
