In this research modified Kaolin by Cetyltrimethylammonium bromide is used as an adsorbent for the removal of Reactive Blue 21 from aqueous solutions. Response Surface Methodology was used to study the effect of independent variables, such as Reactive Blue 21 dye concentration (20, 40, 60, 80 and 100 mg/L), time (10, 20, 30, 40 and 50), initial pH (2, 4, 6, 8 and 10) and modified Kaolin dosage ...

Poly urea-formaldehyde was synthesized simply and rapidly from urea and formaldehyde by condensation polymerization and studied for the sorption of trace acid blue from aqueous solution. The optimum pH value for sorption of the acid blue was 4. Experimental results showed that the sorption capacity of poly urea-formaldehyde for acid blue was determined. The synthetic polymer can be reused for 5...

In Agenda 2063, the African Union focused on making use of ocean resources a priority in new frontier its blue economy. However, most countries are still lagging taking initial steps identifying and prioritising economy sectors understanding risk to sea health. Many have not developed integrated strategies road maps, this delays progress vision for an envisaged by 2063 2050 Africa’s Integrated ...

?Blue waffle,? or ?blue waffle disease,? is many things, but real is not one of them. It is an urban legend, a myth, a tall tale, a rumor, a hoax, etc. about a fictional sexually transmitted infection [2] (STI). If you do an image search, you?ll find (fake) pictures of blue waffle on the Internet. The blue refers to one of the alleged symptoms, which Reader #2 pointed out, and waffle is slang f...

In medicine, patent blue violet (PBV) is utilized for staining lymphatic vessels in sentinel lymph node (SLN) surgery. Moreover, PBV (also called E131 ) is used as food additive. We report on a 51-year-old non-atopic female with early breast cancer, who was scheduled for SLN excision and experienced an intra-operative anaphylactic reaction. In diagnostics the skin prick test (SPT) was positive ...

Deep Blue was the first chess computer to defeat a reigning human world chess champion in a regulation match. A number of factors contributed to the system's success, including its ability to extract useful knowledge from a database of 700,000 Grandmaster chess games—a process that has implications for any non-chess knowledge-discovery application involv-A vast database of human experience can ...