1,430 research outputs found
Biosorption of anionic and cationic azo dye onto red macro alga : Determination of the significant variables using resolution V fractional factorial design
No full textNaturally inspired biosorbent from macro algae species are favored because of its excellent biosorptive capability and low cost. The present investigation reports the potential of red macro-alga, E. spinosum as a biosorbent to remove both anionic and cationic azo dyes, namely Acid Yellow 17 (AY17) and Methylene Blue (MB) from aqueous solution. A resolution V fractional factorial design (2v5-1) analysis was employed to study the main effects and interaction of variables on the biosorption process. Factorial matrix with five variables; pH (2–12), dosage (0.4–2 g/L), initial concentration (50–200 mg/L), contact time (5–120 min) and temperature (30-50 °C) at two levels were conducted in batch study. Pareto charts and ANOVA (within 95% confidence level) were applied to examine the relationship and significance between independent variables and their interactions. A regression model with R2AY17 = 0.9998 and R2MB = 0.9995 was implemented to fit the experimental data. The results obtained indicated that the most significant variables that affected biosorption process were initial concentration and the dosage of the dyes. Experimental screenings are crucial in optimization studies. The remarkable performance of E. spinosum as biosorbent to absorb both dyes shows a great potential to be implemented for local marine macro alga as an alternative. Resource for biosorption process
0480_023_006_Wendell_philips_Stapled_Set_04
No full text1. One-page typewritten letter dated 1 November 1949 to Wendell Phillips from Dr. Aziz S. Atiya, Professor of Medieval History, Faculty of Arts, Farouk I University. 2. One-page handwritten letter to Monseigneur Porphyrios III, Archbishop of Mt. Sinai, from Dr. Aziz S. Atiya, Professor of Medieval History, Faculty of Arts, Farouk I University. 3. One-page typewritten letter dated 28 October 1949 to Dr. Aziz S. Atiya, Professor of Medieval History, Faculty of Arts, Farouk I University, from unknown author. 4. One-page typewritten letter dated 14 October 1949 from Wandell Phillips to Dr. Aziz S. Atiya, Professor of Medieval History, Faculty of Arts, Farouk I Universit
A half-century of metal and metalloid-containing polymers
No full textAlaa S. Abd-El-Aziz ... [et al.]; Includes bibliographical references and indexes.; Editor, Alaa S. Abd-El-Aziz, is currently President of the University of Prince Edward Island.Source type: Electronic(1
Democracy, Like Revolution, is Unattainable Without Women
No full textThe biggest challenge facing women in Arab Spring countries is transforming their leadership and attendant influence during the revolutions into high-level governance positions, both elected and appointed, after the revolutions.
To achieve this goal, reform efforts should include: 1) amending election laws to increase the proportion of women represented at the local, state, and national levels; 2) increasing high-level employment opportunities; and 3) using public education to highlight the role of women and counter perceptions of traditional gender roles.Peer reviewe
Independence Without Accountability: The Judicial Paradox of Egypt's Failed Transition to Democracy
No full textPeer reviewe
Caught in a Preventive Dragnet: Selective Counterterrorism in a Post 9/11 America
No full textPeer reviewe
From the Oppressed to the Terrorist: Muslim American Women in the Crosshairs of Intersectionality
No full textPeer reviewe
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